摘要:
A method for structuring a surface includes, by an assigned modification device, creating a latent structure of at least a first layer of the surface, which has a polymer therein, so as to form hydrophilic and hydrophobic regions for producing a printing form for offset printing, by selectively applying a gaseous, readily volatile solvent as a modifying agent to at least one locally limited region of the surface over at least one exposure time interval. A device for performing the method, a printing form exposer, a printing unit and a printing machine including the surface-structuring device according to the invention, are also provided.
摘要:
A printing unit configuration includes an accessory and a connection mechanism moveably fastening the accessory thereto, throwing the accessory thereon into a working position, and removing it therefrom into maintenance positions. A linear guide can be connected to the accessory and disposed perpendicular to a pivot axis, with the mechanism pivoting the accessory away from the unit about the axis and displacing it along the guide. The mechanism can have two pivot axes disposed parallel to the unit rotation axis and can pivot the accessory away from the unit first about the first axis then about the second. The mechanism can pivot the accessory about an axis perpendicular to the unit rotation axis and/or about a single pivot axis disposed below the accessory. The mechanism can connect the accessory to the unit to project into a recess of a side wall of the printing machine at a side opposite an operator side in a maintenance position.
摘要:
A modular printing machine system for printing on sheets, including a first printing machine of satellite construction type having a central first impression cylinder and at least four printing devices assigned thereto, a second printing machine, and a coupling device for coupling the printing machines to one another for in-line operation thereof, the second printing machine comprising at least one zoneless metering device for uniformly metering at least one of ink and varnish, respectively, over the printing width.
摘要:
A modular printing machine system for printing on sheets, including a first printing machine of satellite construction type having a central first impression cylinder and at least four printing devices assigned thereto, a second printing machine, and a coupling device for coupling the printing machines to one another for in-line operation thereof, includes a transport device of the printing machine system, for transporting the sheets, and a non-impact printer assigned to the transport device.
摘要:
A method of operating a rotary printing press, wherein, during printing with a first printing form, a second printing form is imaged. A device for implementing the method has at least one imaging apparatus associated with the printing forms.
摘要:
Device for stiffening a rotary printing press having at least one stock-conducting printing-unit cylinder cooperating with at least one ink-conducting transfer cylinder disposed in accordance with a satellite formation, the cylinders being journalled in side walls of the rotary printing press, includes a stiffening member passing through a hollow space formed in the printing-unit cylinder and having respective end regions, and adapters secured to the side walls wherein the printing-unit cylinder is journalled, the respective end regions of the stiffening member being connected to the adapters, respectively.
摘要:
Device for removing printing-unit cylinders from rotary printing presses having a transfer cylinder and a printing-unit cylinder, the rotary printing press including side walls formed with openings through which a bearing location of a printing-unit cylinder is accessible, includes surface portions defining one part of at least one opening of one of the side walls disposed concentrically to the axis of the transfer cylinder; the one opening including a removal region connected through the intermediary of a cutout to the bearing location of the printing-unit cylinder; the printing-unit cylinder, after removal of the transfer cylinder through the one opening which includes the removal region, being removable through the same one-opening removal region.
摘要:
Sheet delivery of a printing machine having a gripper system running on an endless conveyor includes air containers located adjacent the endless conveyor and being formed with a sheet-wide field of air-outlet openings, the gripper system including grippers for gripping a sheet of printing material at a leading edge thereof so that the sheet is floatingly conveyable by the endless conveyor over the sheet-wide field of air-outlet openings formed in the air containers, the endless conveyor having a capability of turning the sheet and depositing it on a sheet pile, at least one of the air containers extending over the sheet width and having air-outlet openings of varying shapes formed so that air is discharged therefrom in different directions, the one air container being chargeable with blowing air regulatable in accordance with specific requirements of the printing material of the sheet.
摘要:
Device for conveying sheets from a printing press to a sheet pile includes revolving endless conveyor members looped about at least two rotating members having respective horizontal axes of rotation disposed parallel to one another, one of the rotating members being disposed at a location remote from the printing press, mechanical grippers carried by the endless conveyor members for gripping only respective leading edges of sheets, the endless conveyor members having respective upper sides moving along a conveying path in a given conveying direction for carrying thereon sheets conveyable away from the printing press, revolving endless guiding members disposed over part of the conveying path along and adjacent the upper side of the endless conveyor members and along a part of the endless conveyor members looped about the one of the rotating members disposed at the location of the endless conveyor members remote from the printing press, and pneumatic equipment disposed along the endless guiding members for exerting a force in a direction substantially perpendicular to the conveying direction upon the respective sheets being conveyed, the endless conveyor members having an underside, and the sheet pile being disposed below the underside of the endless conveyor members.
摘要:
A method of treating a process-free printing form fitted to a printing-form cylinder includes having an imaging unit act upon a coating of a printing form and produce printing areas and non-printing areas on the printing form, and after the imaging unit has acted upon the coating, operating the imaging unit at reduced power during a return pass into a starting position thereof.