In order to print image information grouped line by line onto a recording medium (2), wherein the recording medium (2) is guided at a variable speed past a print head (20, 20a...20o, 27a...27c), the position and/or a speed variable of the recording medium (2) in its movement direction (A) are/is determined regularly by way of a measuring device (12), and measured signals (12, 13) are formed cyclically in the process. In an electronic divider circuit (35), a firing signal (36) is formed in each case from every n-th measured signal (12, 13), wherein n is a division value which is changed dynamically during printing operation over a plurality of image lines. The printing in the print head (20, 20a...20o, 27a...27c) is released for a predefined image line in each case by way of the firing signals (12, 13). As a result, a positionally accurate printed image can be achieved even during corresponding acceleration phases of the recording medium (2) with regard to the movement direction.
B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
In order to control a printing process, in which incoming print data structured on a page-by-page basis are processed in a data processing system to form actuation values for a printing device: at least one electronic storage device having a predetermined storage capacity is provided in the data processing system, in which device the print data and/or the actuation values are buffered in associated storage regions; on request, the actuation values are output to the printing device; print images are printed on a recording medium in the printing device in accordance with the actuation values; and the print speed with which the printing device generates the print images is controlled in accordance with variables which are characteristic of the speed of processing the print data.
A device and a method serve to dry a web-shaped recording medium (10) in a printer which prints the recording medium with aqueous ink. A heatable body 20 has a substantially flat contact surface and extends substantially in accordance with a tangential plane (T) of a first guide element (12) and a second guide element (16). A vacuum device (30) generates a vacuum between the contact surface (22) and the recording medium (10).
The invention relates to a method used by an apparatus for activating a processing device for processing a surface of a moving workpiece in web form. The processing is subject to a time delay between an activation of the device performing the processing and the action of the processing on the workpiece. The movement of the workpiece is sensed by an incremental encoder. According to the invention, the number of work pulses generated by the incremental encoder in a time interval that corresponds to the delay is measured. In accordance with the number of work pulses measured, a control pulse for activating the processing device is emitted earlier, thereby compensating for the delay in the processing. In a preferred exemplary embodiment of the present invention, this method is implemented very easily in a hardware circuit by means of two shift registers and a buffer register.
In order to sample the web movement of a material web (10) in a processing operation, particularly a printing operation, an incremental encoder (16) is used, wherein during a backward movement of the material web (10), which is not intended per se, the output of signals (up, dn) generated by the incremental encoder (16) is suppressed and said signals are not output again until a forward movement follows the backward movement, wherein the path of the forward movement corresponds to the path of the previously performed backward movement of the material web (10). Only then are control signals (up*) corresponding to the signals (up, dn) output.
B65H 23/04 - Registering, tensioning, smoothing, or guiding webs longitudinally
B65H 23/188 - Registering, tensioning, smoothing, or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
6.
CLEANING DEVICE FOR A DEVELOPER ROLLER IN AN ELECTROGRAPHIC PRINTING OR COPYING MACHINE
The invention relates to a cleaning device comprising a cleaning roller (17). Preferably, two charging electrodes (23, 24) are disposed adjacently to the cleaning roller, electrically charging the surface of the cleaning roller such that electrical field forces are exerted on the residual toner remaining on a developer roller (18) after developing. The residual toner transferred to the cleaning roller is guided past the charging electrodes. In order to prevent buildup of residual toner on the charging electrodes due to the charging potential present at the charging electrode, the charging electrodes are adjacent to the cleaning roller, such that the residual toner on the cleaning roller wipes along the charging electrodes and wipes away toner adhering thereto.
In a method for regulating the optical density of a printed image, a measured value of the optical density of a printed image that is disposed on the support material (12) within a defined evaluation period is determined at least at one test point (102). The position of the test point (102) within the evaluation period is assigned to the measured value. Furthermore, the measured value is compared with a preset desired optical density (120). The amount of toner to be applied to the support material (12) at the point corresponding to the position of the test point (102) within a subsequent evaluation period is defined according to the result of said comparison.
For automatic control of the sequence in the processing of processing orders in material containers, the processing orders are executed so as to be distributed among several material containers, and the material containers are fed into input containers of a processing device before and during the processing. The material containers are processed at a central station and at several finishing apparatuses connected downstream of the central stations. Before the processing, the processing orders are combined into several groups or clusters, wherein the groups or cluster are automatically sorted according to predetermined rules.
The following steps are carried out in order to determine the character width of characters printed by a printing device: - in a first raster cell (RZ1) of a printing raster, for example a toner mark, a first test pattern (TM1) is produced from printed dots (DP) and the area coverage of said pattern is measured, - in a second raster cell (RZ2) of the printing raster, a second test pattern (TM2) is produced, in which pattern the printed dots are arranged at different locations in comparison with the first test pattern, and the area coverage of the second test pattern is measured, - the ratio of the area coverages of the first and second test patterns (TM1, TM2) is formed and the result is used to calculate the size of the printed dots. A table in which the dependence of the ratios of the area coverages of the first and second test patterns is entered against the dot sizes is used for this purpose, for example.
The charged images produced by an electrophoretic printing system and developed into toner images using fluid developers are reprinted onto a recording medium (7) in a reprint station. During reprinting, problems occur when the recording medium (7) is not sufficiently wetted with fluid. In order to prevent this, a wetting unit (BE) with a wetting roll (14) adjacent to the recording medium is provided in front of the reprint station (6) as seen in the direction of motion of the recording medium (7), said wetting unit wetting the recording medium with carrier fluid.
G03G 15/10 - Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
G03G 15/01 - Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
11.
METHOD FOR DETERMINING THE DETERIORATION OF A DEVELOPER MIXTURE USED IN A DEVELOPER STATION FOR DEVELOPING CHARGE IMAGES, IN AN ELECTROGRAPHIC PRINTING APPLIANCE
The developer mixture (GE) is guided past the developer roller (2) in the developer station (ES), via a cleaning roller (3) which is used to clean the remaining toner off the developer roller (2). As a result of an electric field between the developer roller (2) and the cleaning roller (3), a cleaning roller current (IWR) flows between the developer roller (2) and the cleaning roller (3) when a developer mixture is moved through the electric field (E). Said current is measured as an actual value (Ist-IRW). The difference between the actual value (Ist-IRW) and a pre-determined nominal value (Soll-IRW) is determined, said difference representing a measure for the deterioration of the developer mixture (GE).
G03G 15/08 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
12.
METHOD FOR ADJUSTING THE INKING OF CHARGE PATTERNS PRODUCED ON A CHARGE PATTERN CARRIER USING TONER IN THE DEVELOPER STATION OF AN ELECTROPHOTOGRAPHIC PRINTING DEVICE
In order to control the supply of toner (TF) into the developer mixture stock for replacing the toner used during the inking of the charge patterns, the toner consumption (TVB) is determined according to the charge pattern to be inked, and a base adjustable variable (B_ST) is produced for the toner supply (TF) according to the determination of the toner consumption. The base adjustable variable (B_ST) is corrected according to a inking mark on the charge pattern carrier. For the fine correction of the inking of the charge patterns on the charge pattern carrier, the application tension (Umv) on the inking roller is adjusted according to the inking mark.
The invention relates to a method, a printing system and a computer program for generating a page-by-page serially structured document data stream of a first format. The first page of a multi-page document can be completely and successfully parsed in this format before document data of the subsequent pages are parsed. Document data of a second format which comprise several pages of a document, common settings and/or resources applying to the pages, are connected to the document data stream. A separate type field is provided in the document data stream of the first format and shows that coherent document data comprising several pages are connected to the document data stream.
The developer station (ES) is used to ink charge images of images to be printed with a toner by means of a developer roller (19), said charge images being applied to a charge image carrier. A transport arrangement for a developer mixture from carrier and toner comprises a roller (18) which moves the developer mixture past the developer roller (19) and, next to the roller (18), a charging element (23) which electrically charges the roller from outside. The roller can be used as an inking roller for the developer roller or as a cleaning roller for the developer roller.
In a method for producing a toner roller, an oxide ceramic layer is applied to the surface of a roller-type basic body by electrodeposition. The layer thickness of the oxide ceramic layer is subsequently reduced. In an alternative method, the oxide ceramic layer is produced with the aid of a thermal spraying method, wherein the oxide ceramic layer has an electrical resistivity in the range of 105 10 cm to 1012 cm hat. The pores of the oxide ceramic layer are preferably closed off by a sealing layer.
A toner roller has a roll-shaped base structure (12) on which is arranged an insulation layer (14) which comprises polymer. The insulation layer preferably comprises, as well as polymer, also fillers, for example conductive black and ceramic oxides.
A cleaning roll (17) to which two additional electric potentials (P4, P5) are applied is arranged adjacent to a toner-transporting roll (10) to which a first electric potential (P2) is applied, the electric fields (E) of the two additional electric potentials (P4, P5) overlapping. A first electric field (E1) which transfers the toner (12) from the toner-transporting roll (10) to the cleaning roll (17) is generated in the cleaning gap (21) between the toner-transporting roll (10) and the cleaning roll (17). A second electric field (E2) which repels toner from the surface of the cleaning roll (17) is generated on the surface of the cleaning roll (17), outside the cleaning gap (21).
Disclosed is a method for producing a plastic sleeve (12). In said method, the sleeve is placed on the external surface of a rotational member (16) that has a predetermined surface shape. The sleeve (12) is subjected to a heat treatment during which the sleeve shrinks and adopts the surface shape of the external surface of the rotational member (16).
B29C 33/46 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles using fluid pressure
B29C 53/58 - Winding and joining, e.g. winding spirally helically
19.
DEVELOPER STATION AND METHOD FOR DEVELOPING A LATENT IMAGE WITH INTRODUCTION OF TONER EXCLUSIVELY TO A RETURN ELEMENT
A developer station (40) comprises a return screw (46) and an application screw (44), supplying a mixture of toner and support to a tinting device (55). A cleaning device (58) cleans away unneeded toner. New toner and removed toner are exclusively provided to the return screw (46).
In order to remove toner (2) from a strip (1), a cleaning brush (5) is provided which rests on that side of the strip (1) on which the toner is located, removes the toner, and is at an electrical potential (U2) such that an attractive electrostatic force is exerted on the toner (2) which has previously been charged by a corona device (9). A deflection roller (3) is arranged on the other side of the strip (1), seen in the transportation direction of the strip (1) and offset with respect to the cleaning brush (5), on which deflection roller (3) the strip (1) rests. An electrical potential (U1) is applied via the deflection roller (3) to the strip (1) such that a repelling electrostatic force is exerted on the toner (2) on the strip (1).
G03G 21/00 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
21.
DEVICE AND METHOD FOR DRAWING A WEB OF PRINTABLE CARRIER MATERIAL
The invention relates to a device and a method for drawing a web (10) made of a carrier material in a printer or copier. A motor (20) transfers the rotation thereof to a drive roller (12) by means of a clutch (22). The clutch (22) is electrically controllable, so that a desired drawing force is applied to the web (10). The device can be used for a plurality of operating states of the printer or copier.
The invention relates to a device and a method for metrologically capturing the color of an object (12), using a lighting arrangement (14) comprising at least two light sources (16 to 38) having different spectral light distributions, wherein light beams are cast simultaneously onto the object (12) from the light sources (16 to 38). Using a sensor (40), at least part of the light beams reflected by the object (12) is captured in accordance with at least one spectral sensitivity function. The spectral sensitivity function causes spectral filtering of the light beams captured by the sensor (40).
The invention relates to a method for creating a template. In said method, a template is defined by content data and layout data, and accessory job data for controlling subsequent document processing processes is assigned to the template. The invention allows subsequent document processing steps to be defined.
The invention describes a method and a device for removing toner deposits from the surface of a cleaning element (36). Electrically charged toner particles (12) are exposed to the alternating electric field of an electrode arrangement (44) which loosens the toner particles (12). A mixture of carrier particles (14) and toner particles (12) transports the loosened toner particles away.
The device has a pre-centring apparatus (VZ), a drive unit (AE) and a buffer apparatus (PV). The pre-centring apparatus (VZ) accepts the printing-material web (10) from a printing-material web source and is configured in such a way that the printing-material web (10) is aligned laterally after passing through and is set into a tensioned state. The drive unit (AE) is arranged at the outlet of the pre-centring apparatus (VZ), which drive unit (AE) pulls the printing-material web (10) from the pre-centring apparatus (VZ) and drives it in the process. The buffer apparatus (PV) is arranged between the drive unit (AE) and the printing device, which buffer apparatus (PV) tensions the printing-material web (10) before it is fed to the printing device.
The invention relates to a method and a device for perforating and/or separating substrate material (10, 32, 42), wherein data containing information on a perforation and/or separation pattern (16 to 22) to be introduced into the substrate material are generated. These data are used to control perforation and/or separation means (30, 40) in such a manner that the perforations in the substrate material (10, 32, 42) and/or separations of the substrate material (10, 32, 42) required to produce the perforation and/or separation pattern are produced by said means.
B65H 35/00 - Delivering articles from cutting or line-perforating machinesArticle or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
B65H 35/04 - Delivering articles from cutting or line-perforating machinesArticle or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
B65H 35/08 - Delivering articles from cutting or line-perforating machinesArticle or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
B41F 13/00 - Common details of rotary presses or machines
27.
DEVICE FOR THE TONER JUMP DEVELOPMENT OF CHARGE IMAGES APPLIED TO A CHARGE IMAGE CARRIER IN AN ELECTROGRAPHIC PRINTING DEVICE
For developing the charge images on a charge image carrier (11) of an electrographic printer, the toner jump principle is used, wherein a toner cloud made of toner particles floats in the development region (13) between charge image carrier (11) and a jump element (10). In order to supply the jump element (10), at least two inking rollers (16, 17) are provided, which transport developer made of carrier particles and toner particles past the jump element (10) such that toner particles from the respective developer layer on the inking rollers (16, 17) pass over to the jump element (10) via inking zones (24, 25) present between the inking rollers (16, 17) and the jump element (10) for forming the toner particle layer (15) on the jump element (10).
The invention relates to a method and an arrangement for transferring data between at least two processing units (22 to 26, 12 to 20) of a printing or copier system. The processing units are connected to one another via a switched network connection (3) by means of which at least one physical layer is provided for the transfer of data. Data are transmitted between the processing units (22 to 26, 12 to 20) via the switched network connection (3), said data comprising at least processing information. The invention further relates to a printing or copier system for the processing of web-shaped substrate material and the use of a switched network connection for the provision of a data connection between the control stations (22 to 26) of at least two processing units of a printing or copier system.
Marks for controlling the finishing device, such as a cutting device, are applied to the print substrate web by the printing device. If a fault occurs in the printing operation of the printing device, such as in the printing module, then control information is generated, for example by a sensor device, the information being fed to the finishing device and, depending on the content of the control information, controlling the finishing device such that no fault occurs in the processing of the print substrate web within the finishing device.
For the treatment of the surface of a printing material, for example a paper web, the invention provides at least one application element (AE) made of an anilox roll (1) and a doctoring blade (2) abutting the anilox roll (1) according to the fixing module of an electrographic printing device, the blade transferring a fluid, such as water, onto the anilox roll (1), by means of which the anilox roll (1) wets the surface of the printing material (3).
B05C 1/08 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
31.
METHOD FOR PRINTING AND COPYING TONER IMAGES ONTO A SUBSTRATE MATERIAL WITH REDUCTION OF THE ILLUMINATION IN SELECTED IMAGE ELEMENTS
The invention relates to a method for printing or copying toner images onto a substrate material, in which image elements of each page (S10) are subsequently inspected as to whether said elements meet a specified image criterion (S12), in which case an increase in toner accumulation is made. For image elements that meet this criterion, an illustration unit is driven in such a way that the radiation energy per pixel for this image element is reduced (S16), at least in partial regions. For the other image elements, the nominal energy (S14) is used for the illumination energy.
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
G03G 15/043 - Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
G03G 15/32 - Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups in which the charge pattern is formed dotwise
32.
METHOD, PRINTING SYSTEM AND COMPUTER PROGRAM FOR AUTOMATICALLY PROCESSING ORDER SUPPORT DATA OF A PRINT JOB
The invention relates to a method, a printing system and a computer program for automatically processing order support data of a print job. With the invention, incoming order support data of a print job is centrally analyzed in a print job manager by means of predetermined ticket rules, and optionally supplemented by additional print parameters, so that the order support data is used to form a printing system-specific job ticket, with which the print job can be correctly printed in the respective printing system. The central analysis of the order support data in the print job manager allows simple management of the ticket rules and, due to the proximity to the print server and the printing devices connected thereto, very printing system-specific processing of the job tickets.
The invention relates to a device for sealing a shaft (50) to prevent the penetration of a toner mixture (14), wherein the device comprises an annular stationary sealing device (54) disposed at the distance of an annular gap (64) around a shaft (50), wherein a magnetic field is applied to the annular gap (64). The annular gap (64) comprises a mixture of a viscous, paste-like barrier medium and magnetic carrier particles. Due to said barrier medium and the carrier particles, neither the magnetic carrier particles nor the toner particles can penetrate when using a two-component toner mixture (14).
G03G 15/09 - Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
34.
METHOD AND ASSEMBLY FOR CREATING PRINTED IMAGES LYING ADJACENT TO ONE ANOTHER ON A PRINT MATERIAL WITH THE AID OF AN ELECTROPHOTOGRAPHIC PRINTING DEVICE
When printing units (DE1, DE2) are situated on the same side of a continuous photoconductor (1) that is pre-charged with an initial potential, each unit having a character generator (4, 7) and a developer station (5, 8) that operates according to the 'tribo jump' principle, said elements generating a charge image on the photoconductor (1) and said image being coloured with charged toner by a jump roller located in the developer station and supplied with a pre-voltage (bias voltage), there is a risk that a toner image generated by a first printing unit (DE1) becomes damaged in the subsequent second printing unit (DE2) by the fact that the toner of said first image is dislodged by toner from the second printing unit (DE2) and enters said second unit (DE2). To eliminate this risk, the charge image developed with toner by the first printing unit (DE1) and the photoconductor (1) are transferred by a transfer unit (12) to a transfer potential after leaving the printing unit (DE1) and before reaching the next printing unit, the value of said transfer potential being greater than the bias voltage of the jump roller in the second printing unit (DE2).
The invention relates to a device and to a method for detecting electric potential and electric charges in a printer or copier. A measuring arrangement (10) is provided, which comprises a first electrode (12, 14) and at least one second electrode opposite from the first electrode (12, 14). Furthermore, an endless intermediate image carrier (16) is provided, on the peripheral surface (40) of which a toner image (39) can be produced. With the help of a drive unit, the intermediate image carrier (16) is driven so that the peripheral surface (40) thereof is guided circumferentially past the first electrode (12, 14) opposite therefrom. An evaluation unit (27, 28) is electrically connected to the first electrode (12, 14). The evaluation unit (27, 28) captures electric current (I) flowing between the first electrode (12, 14) and the evaluation unit (27, 28). Furthermore, the evaluation unit (27, 28), with the help of the detected current, determines a change in the electric potential of the peripheral surface (40) of the intermediate image carrier (16) in a detection region opposite from the first electrode (12, 14) and/or the change in charge of toner particles located in the detection region.
The invention relates to a method and a device for processing a measured signal for recording a property of a toner mark (39). A toner mark (39) is generated by means of an image production device. The toner mark (39) is recorded by means of a measuring arrangement (10) in which scanned values recorded at scanning times by the measuring arrangement (10) are provided as measured signal. A function (120) to describe a continuous signal curve is recorded on the basis of at least a part of the provided scanned values. At least one extreme value (122) for the function (120) is recorded.
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
G03G 15/01 - Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
G03G 15/04 - Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
37.
METHOD AND DEVICE FOR PROCESSING A MEASUREMENT SIGNAL FOR DETECTING A PROPERTY OF A TONER MARK
The invention relates to a method and device for processing a measurement signal for detecting a property of a toner mark (39). The signal profile of a measurement signal is determined and a plausibility check of the determined signal profile is carried out.
The invention relates to a method and an arrangement for setting the dot size (B1, B2) of toner images generated with the aid of an electrographic printing or copying system. At least one latent raster image which is not inked in with toner particles over the whole area is generated and inked in with toner particles to form a toner image (39). A measure of the area of the toner image (39) that has actually been inked in with toner particles is determined and compared as actual value (x2) with a desired value (w2). An electric field (E1, E2) for transferring toner particles to the regions of the latent raster image that are to be inked in is set depending on the comparison result. Furthermore, the invention relates to a method and an arrangement for controlling an image generating process of an electrographic printing or copying system, and a computer program product for carrying out the methods.
In order for it to be possible to insert ribbons (1) of any desired length into a machine assembly (MA), for example transfer ribbons in an electrophotographic printing unit, the ribbon (1) is mounted on tubes (3) which are pushed into receptacles (6) which are arranged in the machine assembly (MA). Subsequently, sliding films are applied to the drive roll and/or deflection rolls (2, 8) which are arranged in the machine assembly, then the ribbon (1) is pushed with a gripper arrangement over the sliding films onto the drive roll and the deflection rolls (2, 8) until it has reached a setpoint position. Finally, the sliding films and the gripper arrangement are pulled from the machine assembly. The removal of the ribbon from the machine assembly takes place in the reverse sequence.
G03G 15/00 - Apparatus for electrographic processes using a charge pattern
G03G 15/16 - Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern
G03G 21/16 - Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
40.
METHOD FOR CONTROLLING A DEVELOPMENT PROCESS IN DIFFERENT OPERATING PHASES
In a method for controlling a development process in an electrographic printer or copier, a mixture of toner and carrier particles is used. For the state of the mixture, a characteristic value D or E is determined from model calculations, an operating ageing rate or a time constant being taken into account. The development process is subjected to open-loop or closed-loop control depending on the characteristic values D and/or E.
The invention relates to a method, a computer program and a print system for trapping print data having a plurality of objects. According to the invention, trappings are detected only on the edges of one respective object when the brightness of the respective object to the adjoining area differs by an amount that is higher than the predetermined threshold value. The method can be carried out in real time without causing any delay in the printing process. It can therefore be integrated into a print data flow for high-speed electrographic printers.
The invention describes a method, a print system and a computer program for trapping print data with a multiplicity of objects. In this context, the print data are transmitted to a printer in a print data stream together with trapping instructions. The print data stream is structured in different levels. The trapping instructions have level-related priority rules. The method can be carried out in real time without this delaying the print process. It can therefore be integrated into a print data stream for electrographic high-performance printers.
The invention relates to a method, a computer program and a print system for trapping print data having a plurality of objects. According to the invention, the objects are transferred one by one to a pixel file while at the same time carrying out trapping. The method can be carried out in real time without causing any delay in the printing process. It can therefore be integrated into a print data flow for high-speed electrographic printers.
The invention relates to a method and a system for the automatic processing of printing data for a printing operation. Depiction parameters for printing data are generated automatically by way of the method according to the invention. The depiction parameters are generated, inter alia, with the aid of an image analysis method, with the result that physical variables which are assigned to the printing data as depiction parameters directly or after further analysis are extracted from the printing data. Output parameters, by way of which the printing operation is controlled, can be determined using the depiction parameters according to known methods.
The invention relates to a method, an arrangement, and computer program products for updating program data of a device (14, 42) via a UP3I interface, updating data being transmitted to the UP3I interface with the help of UP3I data packets.
The invention relates to a method for receiving printing data. According to a first aspect of the present invention, the printing data is copied by the receiver and stored on a mirror computer system before receipt of the printing data is acknowledged to the respective sender. Thus, the danger of loosing the printing data on the receiver side is considerably reduced. According to a second aspect of the present invention, the incoming printing data is checked based on parameters having one or more headers as to whether the printing data comes from a correct sender. The respective parameter list can be set freely by the receiver, wherein the source from which the printing data is received can be controlled very specifically. Content-related parameters of the printing data can be used in particular.
The invention relates to a method and a device (10) for determining different properties of a first toner and at least one second toner. A toner mixture is produced from first toner particles of the first toner and second toner particles of the second toner, the first toner having a first original color and the second toner having a second original color. The toner mixture is triboelectrically charged. The toner particles of the toner mixture are separated according to the respective electrical charge thereof such that a first toner layer that has a first color and a second toner layer that has a second color are created. In addition, a color difference between the first color and the second color is determined.
The invention relates to a method and a device for determining a colour association of source colours and target colours, according to which a plurality of different source colours is selected. At least one output image with a representation of the selected source colours is emitted. The colour value of the emitted representation of each source colour is determined as a target colour. A general imaging function is determined by means of the selected source colours and the target colour determined for each source colour.
The invention relates to a device and to a method for post-machining printed carrier material (12) by an electrographic printing or copying device. Said claimed device comprises a smoothing device (20, 20') having a cover surface that is in contact with the toner, heated by a fixing device (14), of a printed image produced on the carrier material (12) and said cover surface exerts a printing force onto the heated toner. Said claimed device also comprises a cleaning device (35, 35') that is in contact with the cover surface of the smoothing device (20, 20') on one of the first contact points, and also an application unit (50, 50') that enables a fluid to applied to an area of the cover surface of the smoothing device (20, 20'). Said application device (50, 50') is in contact with the cover surface of the smoothing device (20, 20') on a second contact point.
The invention relates to a system and a method for detecting a fire in a fixer unit (14) of an electrographic image production device (10). With the aid of a photoelectric sensor (30, 32), which is arranged adjacent to the carrier material (16) to be fixed, at least one part of a fixing region of the fixer unit (16) is monitored. An error signal is output if a fire in the fixing region is detected with the aid of the photoelectric sensor (30, 32).
patents
