153results about "Letterpress printing" patented technology

There is described a sheet inspection system for a sheet-fed recto-verso printing press of the type comprising two printing cylinders (10, 20) for carrying out simultaneous recto-verso printing of the sheets, said sheet inspection system comprising at least a first inspection device (100) for taking an image of a first side of the printed sheets. The first inspection device (100) comprises a first line image sensor (110) for performing line-scanning image acquisition of the first side of the printed sheets, and the first inspection device (100) is disposed in such a way that the first line image sensor visually acquires an image of a printed sheet while the said printed sheet is still adhering onto the surface of a first one (10) of the two printing cylinders (10, 20) of the printing press and immediately before the said printed sheet is transferred to a chain gripper system (5) of the printing press. Also described is a printing press equipped with the inspection system.

Rotary printing machine with forme and impression cylinders for variable-format or variable-circumference printing and with service apparatus which are capable of being moved radially in relation to the printing-unit cylinders for throw-on or throw-off movements and in the axial direction of the cylinders or in the side-wall plane. The service apparatus and the printing-unit cylinders are arranged on cross slides which can each be moved in two directions relative to the printing-unit side wall.

A platen assembly for a printer comprised of a platen roller assembly and a housing assembly that is structured to rotatably support the platen roller assembly. More particularly, the present invention is directed to a platen roller assembly comprising a platen roller defining first and second ends; a locking pin extending from at least one of the first and second ends of the platen roller; a housing assembly adapted to rotatably support the platen roller; and a drive assembly structured to rotatably engage the locking pin extending from one end of the platen roller. In this regard, the present invention provides a platen roller assembly that is simple, easily alignable, and readily replaceable by a user.

In the plate supplying apparatus of the present invention, various vibrations are provided to a plate secured via suction during a separating operation by causing pad rods 403 to repeat a slight ascent and a pause, and thereafter causing the pad rods 403 to make an abrupt descent, thereby reliably peeling off a slip sheet adhering to the back face of the plate. Further, vibration in the rod-up / down direction is provided to the plate during the separating operation, and the plate is not pushed hard. Thus, it is possible to prevent the plate from being damaged. A raising and lowering motor 52 is driven to lower the cassette 9. A separating operation for peeling off a slip sheet S adhering to the back face of the plate P is performed, and thereafter the plate P secured via suction is turned over and transferred.

When a user sets, from a user interface window using a bookbinding application, instructions of dividing a document into a plurality of parts and stapling each part of the document, a printer driver generates one job in which the staple attribute of a binder corresponding to each part is set to “ON” or “OFF”, and issues the job for a printer. With this operation, the user can perform staple designation to an arbitrary part of the document, and can realize a plurality of staple processes in one print job.

The present invention relates generally to systems and methods that remove an interleaf sheet interposed between plate sheets from a material stack used, for example, in a computer-to-plate imaging system and / or environment. Embodiments of the system and method can also remove plate sheets from an interleaf sheet, and transport the plate sheet for subsequent imaging.

An image recording material separating / removing device which, by using a single lift-out mechanism section, can lift image recording materials out from plural cassettes along simple loci of movement, and in which a space for providing and withdrawing the cassettes is kept as small as possible. In a cassette housing section, a plurality of cassettes are disposed one above another. Each cassette is offset in a horizontal direction. An amount of offset is set on the basis of a locus of movement of a printing plate at a time when the printing plate is sucked and held by suction cups and lifted up in a vertical direction. At least while the suction cups are moving in the vertical direction, the printing plate is not interfered with by cassettes thereabove, and an emulsion surface of the printing plate is not scratched. Space required for placement of the cassette housing section can be reduced. Moreover, because movement of the suction cups can be simplified, a control system can be simplified.

Systems and methods for modifying, altering, constructing, or retrofitting an existing newspaper press having a first cut-off length, to have a second cut-off length which is different from and generally less than the first. These systems and methods generally provide for the machining of new bore holes into the existing press unit frame. The new bore holes will generally completely encompass the old bore holes and allow for linear translation of the axes of rotation of the new cylinders relative to the positions of the axes for the old cylinders.

A printer includes a platen roller that is detachably supported on a support section that is formed in a frame, and a head unit that is supported on the frame and can be moved in a direction in which the head unit is brought into pressure-contact with the platen roller, The printer also includes a regulating member that is movably supported on the frame, and the regulating member has a regulating section that regulates a shaft of the platen roller to deviate from the support section and a pressing section that is arranged on the opposite side to the regulating section, with the head unit interposed therebetween. A first plate spring that presses the head unit against the platen roller and a second plate spring that presses the pressing section so as to bias the regulating member in a direction in which the regulating section can regulate the shaft are provided in an area on the opposite to the platen roller, with the head unit interposed therebetween.

In a web-fed rotary offset printing machine, operating preferably with variable-format cylinders, both sides of the printing machine are covered, during the operation and resetting of the machine, so that no access, in particular no access to the printing units, is possible. For this purpose, an access module is used between the printing-units, which module is equipped laterally with covers which resemble window roller blinds and cannot be opened while the machine is in operation.

An ink bottle mounting apparatus comprising a bottle mounting apparatus body 11 having an ink bottle 1 and a bottle insertion chamber 12 into which the ink bottle 1 is inserted, wherein the ink bottle mounting apparatus further comprises a bottle lock member 15 which is engaged with a groove 5 formed on a side peripheral surface of the ink bottle 1 to prevent the ink bottle 1 from being pulled out when the ink bottle 1 is mounted to the bottle mounting apparatus body.

Roll-forming apparatus is provided together with a conveyor system utilized to transport raw dough rolls. A stop gate is movably positioned in the path of the rolls and, when placed in an interfering position, temporarily stops the rolls while the rolls maintain sliding contact with the conveyor. An imprinter is positioned above the conveyor and adjacent the stop gate. The stop gate is subsequently moved to a noninterfering position to permit the rolls to pass to the imprinting drums where the rolls are formed into a desired shape.

A method and a device for automatically transmitting data from a pre-press stage (9) to a printing substrate processing machine (8) having at least one print unit (10) and one print form (11) for printing on a printing substrate (1). The method and the device are distinguished in that the data of the pre-press stage (9) to be transmitted to the printing substrate processing machine (8) are applied in an encoded form to the print form (11), and these data are able to be read out by the printing substrate processing machine (8). Also provided is a method and a device for automatically transmitting data from a first printing substrate processing machine (8) having at least one print unit (10) and one print form (11) for printing on a printing substrate (1), to a further printing substrate processing machine, in particular a folding machine. This method and this device are distinguished in that the data to be transmitted to the further printing substrate processing machine are applied in the first printing substrate processing machine (8), in a machine-readable form, to the print form (11), and these data are read out by the further printing substrate processing machine.

An interleaf at the top position of a stack of plates and interleaves stored in a cassette is removed by attaching the interleaf to suction pads mounted to a vertically movable support. When the interleaf in the cassette is moved upwardly to a position opposed to a pair of nip rollers, movable suction pads move horizontally in such a direction as to stretch the interleaf to remove wrinkles in the interleaf. Then, a leading edge portion of the interleaf is held between the pair of nip rollers and removed outwardly.