Abstract: An inkjet printing method includes providing an inkjet composition, which includes a radiation curable monomer or oligomer, a photo-initiator, and an inhibitor present in an amount sufficient to prevent full curing of the radiation curable monomer or oligomer during an initial exposure to a curing energy. First drops of the inkjet composition are deposited onto a substrate. The curing energy is selected such that it is sufficient to substantially consume the inhibitor. The first drops are exposed to the curing energy, whereby the first drops retain substantially a same surface tension as a liquid drop of the inkjet composition. Second drops of the inkjet composition are deposited adjacent to the first drops. The first and second drops are exposed to the curing energy, whereby the first drops are at least partially cured and the second drops retain substantially the same surface tension as a liquid drop of the inkjet composition.

Abstract: An inkjet printing method includes providing an inkjet composition, which includes a radiation curable monomer or oligomer, a photo-initiator, and an inhibitor present in an amount sufficient to prevent full curing of the radiation curable monomer or oligomer during an initial exposure to a curing energy. First drops of the inkjet composition are deposited onto a substrate. The curing energy is selected such that it is sufficient to substantially consume the inhibitor. The first drops are exposed to the curing energy, whereby the first drops retain substantially a same surface tension as a liquid drop of the inkjet composition. Second drops of the inkjet composition are deposited adjacent to the first drops. The first and second drops are exposed to the curing energy, whereby the first drops are at least partially cured and the second drops retain substantially the same surface tension as a liquid drop of the inkjet composition.

Abstract: An image forming apparatus and printing methods include a media support member to support media and an ink applicator unit to selectively apply ink to the media disposed on the media support member in a print mode. The image forming apparatus and printing methods also include a heating unit to preheat at least one of the media support member and the media to a predetermined temperature in a preheat mode prior to the selective application of the ink to the media.

Abstract: An image forming apparatus and printing methods include a media support member to support media and an ink applicator unit to selectively apply ink to the media disposed on the media support member in a print mode. The image forming apparatus and printing methods also include a heating unit to preheat at least one of the media support member and the media to a predetermined temperature in a preheat mode prior to the selective application of the ink to the media.

Abstract: A method is provided for simulating the function of an image conversion device, comprising steps of reading input image data, recording the physical transformations of the base elements in at least one process step, emulating a predetermined number of processes, recording the final states of the base elements, collecting the base elements states following the last simulation step, transforming said collection into the simulation file and printing or displaying said simulation file. A system for implementing the method is also provided.

Abstract: A method is provided for simulating the function of an image conversion device, comprising steps of reading input image data, recording the physical transformations of the base elements in at least one process step, emulating a predetermined number of processes, recording the final states of the base elements, collecting the base elements states following the last simulation step, transforming said collection into the simulation file and printing or displaying said simulation file. A system for implementing the method is also provided.

Abstract: A method and apparatus for inkjet printing by means of a plurality of inkjet nozzles arranged in at least one row and having spaced, parallel nozzle axes for emitting liquid ink drops towards the substrate, and multi-level charging and deflecting plates controlled to deflect individual drops to selected locations on the substrate with respect to the respective nozzle axis according to the pattern to be printed. The multi-level charging and deflecting plates are controlled to cover, for each nozzle, a line section which includes two non-contiguous deposit zones to receive ink drops from the respective nozzle, separated by a non-deposit zone not to receive ink drops from the respective nozzle.

Abstract: A method of reducing print-density variations in printers, particularly multi-deflection continuous-jet printers, including printing elements arrayed along the X-axis for printing on a substrate moving relative to the printing elements along the Y-axis. The method includes controlling the printer to print a test pattern having a plurality of strips extending along the X-axis, wherein the gray-level of each printed strip is the same along the X-axis, but varies from one strip to the next along the Y-axis; analyzing the printed test pattern to detect gray-level variations in the printed strips; preparing a density correction table of gray-level corrections for each X-coordinate; and controlling the printing elements in accordance with the density correction table to reduce the detected gray-level variations.

Abstract: A method and apparatus for inkjet printing by means of a plurality of inkjet nozzles arranged in at least one row and having spaced, parallel nozzle axes for emitting liquid ink drops towards the substrate, and multi-level charging and deflecting plates controlled to deflect individual drops to selected locations on the substrate with respect to the respective nozzle axis according to the pattern to be printed. The multi-level charging and deflecting plates are controlled to cover, for each nozzle, a line section which includes two non-contiguous deposit zones to receive ink drops from the respective nozzle, separated by a non-deposit zone not to receive ink drops from the respective nozzle.

Abstract: A method and system for compensating for banding defects il inkjet printer in provided. The mnetlod comprising identifyg one or more nozzles whose coatribution to a printed test image is witliin a defned range around a banding defect appearing in He printed test image and generating compensation data for at least one of the identified nozzles.

Abstract: A thermal stencil sheet for use in a laser stencil printing system comprising a stencil sheet comprising a base layer, a radiation absorbing layer, and a thermal film overlying the radiation absorbing layer. The base layer comprises a porous fibrous material which is saturatable with liquid.

Abstract: It is an object of the present invention to provide a printing stencil and a method for its preparation. There is thus provided, In accordance with a preferred embodiment of the present invention, a printing stencil comprising a porous stencil carrier layer, preferably of a non-woven tissue, which is impregnated with a solid or liquid radiation curable material. The printing stencil may further comprise a mask laid upon or integral to the stencil layer for defining areas transparent and areas non transparent to curing irradiation. There is thus also provided, in accordance with a preferred embodiment of the present invention, a method for the preparation of a printing stencil, said printing stencil comprising a stencil carrier layer and a stencil layer, which is impregnated with a radiation curable material.

Abstract: A method for the conversion of an CEPS image data file to a vector dominated Page Description Language (PDL) file. The CEPS image data file can include LineWork image data, Continuous Tone image data and High resolution Continuous Tone (HC) data. The Page Description Language file can be realized as a composite file or a separated file.

Abstract: A method for the conversion of an CEPS image data file to a vector dominated Page Description Language (PDL) file. The CEPS image data file can include LineWork image data, Continuous Tone image data and High resolution Continuous Tone (HC) data. The Page Description Language file can be realized as a composite file or a separated file.