Abstract: In some examples, an ink feed system for providing and feeding printing ink to an inking unit of an intaglio printing unit includes an inking device in the inking unit for inking a first inking unit cylinder. A provision device includes a storage receptacle with an ink reservoir of printing ink that is fed via an outlet and a line to the inking device. Furthermore, a wall of the storage receptacle encompassing the outlet can be heated and/or a metering device may be provided in the line path to support and/or effectuate delivery of the printing ink from the storage receptacle. On an output side, the metering device may provide a mass flow or volume flow that correlates with a working speed of the metering device via a defined relationship, and the metering device may be connected to a control device to control the working speed of the metering device.

Abstract: A ductor roll assembly for use in an ink station assembly of a can decorator for communicating ink from a fountain roll to a distributor roll. The ductor roll assembly having a roll portion including an elongated axial member and a plurality of segments selectively disposed on and around the axial member axially adjacent each other for rotation about a rotation axis. The plurality of segments includes: a number of ink transfer segments, each ink transfer segment having an ink transfer surface disposed at a first radial distance from the rotation axis and structured to transfer ink between a corresponding axial portion of a fountain roll and a corresponding axial portion of a distributor roll; and a number of spacer segments having a second outer diameter less than the first outer diameter.

Abstract: A method of creating a bitmap for a printing plate, including defining an area of an image intended to print with a solid color, applying a halftone screen to the defined solid color area, and creating the bitmap embodying the halftone screen in the defined solid color area. The halftone screen pattern includes a plurality of dashes with a plus or minus 45-degree orientation, a plus or minus 135-degree orientation, or a combination of two or more plus or minus 45-degree and 135-degree orientations. Each dash or component dash thereof has a same number of two or more adjacent touching pixels in length and a number of one or more adjacent touching pixels in width, or the dashes are orthogonally arranged in rows and columns, or a combination thereof. Masks, plates, processes for making them, and print methods using the bitmaps are also described.

Abstract: A control method for controlling a converting machine that acts on plate elements for forming containers, the method including displaying with a graphical control interface at least one image representing a plate element or a container formed by a plate element, and control areas which are superimposed on the image and which respectively symbolize characteristic magnitudes of the conversions to be induced on each plate element, receiving by a processing unit a command entered individually by the operator by activating a control area, and controlling in response to the individually entered command, the processing unit to generate at least two respective adjustment signals correlated by a predetermined adjustment law to adjust at least two respective adjustable parameters, whereby corresponding converting members induce a change in a characteristic magnitude.

Abstract: The invention relates to a method and apparatus for forming an anilox roll. The method includes supplying a cylinder of the anilox roll that has an outer surface to be tooled, supplying at least a laser source and laser engraving the outer surface of the anilox roll with a laser spot that is formed by a laser source for obtaining a tooled anilox roll, and applying an optical guide in the light path of the laser for enabling the laser spot to move reciprocally on the outer surface to be tooled.

Abstract: The invention relates to an anilox roll for a printing apparatus. The anilox roll comprises a cylinder having a surface. The surface comprises a fluid distribution structure for receiving, distributing and transferring a fluid such as an ink. The fluid distribution structure comprises a channel formed in the surface having channel walls. This channel is arranged for distributing the fluid over the fluid distribution structure. The channel comprises channel parts, wherein the courses of connected channel parts are at an angle with respect to each other for preventing a linear distribution of the fluids to be received in a course direction of the channel, allowing a meandering distribution of the fluid to be received in the channel. Side walls of the channel are arranged for allowing a meandering flow of the fluid throughout the fluid distribution surface.

Abstract: A printing apparatus has a printing device having a supply for a substrate to be printed and a supply for ink. The printing device has a printing roll with an image and an anilox roll mounted in a bearing. The anilox roll comprising a cylinder having a surface with a fluid distribution structure for receiving the fluid. The fluid distribution structure has a channel formed in the surface for distributing the fluid over the fluid distribution structure. The channel having a course and opposite channel walls positioned next to each other in a relative parallel oscillating fashion. Printing in a first operational mode, heavy layers of ink on said substrate with relatively large fluid droplets and Printing in a second operational mode, details on said substrate with relatively small fluid droplets.

Abstract: A film roller for offset printing having a surface with projections and recesses, characterized in that said projections and recesses form an irregular random pattern.

Abstract: The invention relates to an anilox roll for a printing apparatus. The anilox roll comprises a cylinder having a surface. The surface comprises a fluid distribution structure for receiving, distributing and transferring a fluid such as an ink. The fluid distribution structure comprises a channel formed in the surface having channel walls. This channel is arranged for distributing the fluid over the fluid distribution structure. The channel comprises channel parts, wherein the courses of connected channel parts are at an angle with respect to each other for preventing a linear distribution of the fluids to be received in a course direction of the channel, allowing a meandering distribution of the fluid to be received in the channel. Side walls of the channel are arranged for allowing a meandering flow of the fluid throughout the fluid distribution surface.

Abstract: A method of operating an anilox printing unit in which ink accumulates on and detaches from a feed blade and, after detaching from the feed blade, forms ink accumulations on a screen roller, and in which a gap is formed between the screen roller and a further roller for the ink accumulations to pass through the gap without contacting the further roller, includes forming the gap by displacing the axis of the further roller and evening out the ink accumulations on the screen roller to such an extent that the ink accumulations that have been evened out pass the gap without contacting the further roller. A smoothing roller, for example, may be used to even out the ink accumulations. A printing press for carrying out the method is also provided.

Abstract: An ink fountain of a printing press includes a component having a bearing face for bearing printing ink and cells made in the bearing face. An ink fountain roll for an ink fountain of a printing press and a printing press having an ink fountain, are also provided.

Abstract: An inking unit of a rotary printing press includes a film roller. The film roller has a structured outer surface that has a Shore D hardness ranging between 80 and 90 and a stochastic surface. The stochastic surface is incorporated into the outer surface of the film roller by peening.

Abstract: The present invention relates to the use of laser-engraved printing forms for printing using printing inks in a gravure printing process, where the printing inks are pigmented with flake-form effect pigments, to a corresponding gravure printing process, and to a printing ink.

Abstract: A composite doctor blade to be installed in a blade holder (11) containing a throat (15) has a rear part (14) made of a composite material which has a profiling (16) which protrudes beyond the plane (18) defined by the doctor blade in order to retain the doctor blade in the blade holder (11). At a distance from the rear part (14), part (17) of the profiling (16) protrudes from the plane (18) to one side only. Moreover, the part (17) is higher than its width in the cross-sectional plane of the doctor blade.

Abstract: An inking roller for an inking system has, distributed over the surface on a ink-transferring surface (S), circumferential flutes (3). The longitudinal flutes (4) intersect the circumferential flutes (3) and elevated surface areas as said webs (5) and between the circumferential and longitudinal flutes (3, 4).

Abstract: A printing press includes an anilox inking unit with an engraved roller and a doctor-type ink fountain. At least one stirring element projects into the doctor-type ink fountain.

Abstract: A method, associated software and resulting printing plate having both solid and halftone areas comprising ink cells. Ink cells may be provided in the solid areas according to a first pattern with a first density and size of cells per unit area, and in the halftone areas superposed on selected numbers of halftone dots. The selection of halftone dots with superposed ink cells may be according to a second pattern with a second density and size of cells in the halftone area that is a function of halftone dot size and that may or may not be be related to the first pattern.

Abstract: A short inking unit for a planographic printing unit that has a compact design and is operable for transferring an ink film to a form cylinder with high uniformity and stability. This short inking unit includes an applicator roll arrangement having a plurality of applicator rolls (5, 6; 5, 6, 15) which each interact with the form cylinder (1) and are offset with respect to one another in the direction of rotation of said form cylinder (1), and a plurality of engraved rolls (7, 8; 7, 8, 13; 17, 7, 8; 17, 7) which are offset with respect to one another in the direction of rotation of the form cylinder (1) and which each have a respective ink supply for applying ink to the engraved roll. The applicator rolls and engraved rolls form a roll train having rolls which roll on one another in pairs with each pair of rolls including one applicator roll (5, 6, 15) and one engraved roll (7, 8, 13, 17) interacting at a roll nip of the roll train.

Abstract: A short inking unit for a rotary printing machine is provided. The short inking unit includes a changeable machine glazing cylinder.

Abstract: When an alignment film 416 and an overcoating film 429 are formed by flexography on the front side of a second transparent substrate 420, on which color filters 407R, 407G, and 407B are formed at a predetermined same-color pitch P1, during the procedure for manufacturing a liquid crystal device 400, the pitch of meshes of an anilox roller used in flexography and the pitch of pitches formed on the surfaces of projections of a letterpress are set to be equal to the same-color pitch P1 of the color filters 407R, 407G, and 407B, thereby preventing moiré.

Abstract: A device for controlling delivery of an amount of fluid has a first rotating device having at least one peripheral first fluid transfer section, a second rotating device having at least one peripheral second fluid transfer section, and a device for setting a phase between the first and second fluid transfer sections. The device may be used for providing ink or dampening solution in a printing press.

Abstract: A printing device, system and method are disclosed for measuring and displaying the amount of wear experienced by printing rolls. A wear detection mechanism is employed in connection with rolls, such as anilox-type rolls that transfer ink to a substrate in forming a printed image. A wear detection mechanism is engraved, etched, or the like into the outer circumferential surface of the roll to provide an indication of the amount of wear experienced by the roll. Portions provided in series at predetermined depths may be correlated with a depletion scale indicia to display the wear condition of a particular roll in a printing system. A depletable wear strip comprising multiple engraved portions which correlate with values upon a depletion scale may be employed.

Abstract: A printing device, system and method are disclosed for measuring and displaying the amount of wear experienced by printing rolls. A wear detection mechanism is employed in connection with rolls, such as anilox-type rolls that transfer ink to a substrate in forming a printed image. A wear detection mechanism is engraved, etched, or the like into the outer circumferential surface of the roll to provide an indication of the amount of wear experienced by the roll. Portions provided in series at predetermined depths may be correlated with a depletion scale indicia to display the wear condition of a particular roll in a printing system. A depletable wear strip comprising multiple engraved portions which correlate with values upon a depletion scale may be employed.

Abstract: A printing tool comprising a raster formed of a grid of intersecting raster lines which raster lines form raster points between them. The raster comprises at least one region in which each raster point is connected to at least one other raster point adjacent via an interruption in the raster line separating the raster points.

Abstract: A method for controlling a quantity of medium transferable from a screen roller of a printing machine onto a roller that is in contact with the screen roller includes exerting an influence upon a difference in circumferential speed between the screen roller and the roller in contact therewith, and further includes controlling the difference in the circumferential speed as a function of the printing speed of the printing machine, so that printed medium density remains at least approximately constant at least within a wide printing speed range.

Abstract: An inking unit in a printing machine includes a screen roller and an ink metering system subdivided into inking zones and assigned to the screen roller for performing zonal ink metering on the screen roller, the ink metering system having metering elements disposed so as to be movable relative to one another.

Abstract: flexographic printing plate having solid image areas which are covered by a plurality of very small and shallow cells similar to the ink carrying cells found in anilox ink metering rolls. These cells fill with ink during the plate inking step and reproduce solid image areas with better color saturation while at the same time reducing the halo typical of flexographic printing of solids. Associated with this plate is a method for producing the cells, including the use of an intermediate screened film and of a computer program for generating the film intermediate.

Abstract: A method, associated software and resulting printing plate having both solid and halftone areas comprising ink cells. Ink cells may be provided in the solid areas according to a first pattern with a first density and size of cells per unit area, and in the halftone areas superposed on selected numbers of halftone dots. The selection of halftone dots with superposed ink cells may be according to a second pattern with a second density and size of cells in the halftone area that is a function of halftone dot size and that may or may not be related to the first pattern.

Abstract: A meterable screen roller having a peripheral surface whereon a multiplicity of printing ink-accepting depressions are disposed includes a respective base for the depressions formed by a resilient material, and respective chambers located underneath and assigned to the depressions, the chambers being actable upon by a pressure medium for respectively enlarging and reducing the volume of the depressions.

Abstract: A flexographic printing plate having solid image areas which are covered by a plurality of very small and shallow cells similar to the ink carrying cells found in anilox ink metering rolls. These cells fill with ink during the plate inking step and reproduce solid image areas with better color saturation while at the same time reducing the halo typical of flexographic printing of solids. Associated with this plate is a method for producing the cells, including the use of an intermediate screened film and of a computer program for generating the film intermediate.

Abstract: A method for controlling a quantity of medium transferable from a screen roller of a printing machine onto a roller that is in contact with the screen roller includes exerting an influence upon a difference in circumferential speed between the screen roller and the roller in contact therewith, and further includes controlling the difference in the circumferential speed as a function of the printing speed of the printing machine, so that printed medium density remains at least approximately constant at least within a wide printing speed range.