Patents
Patents for B41F 21 - Devices for conveying sheets through printing apparatus or machines (4,769)
03/1988
03/02/1988EP0257366A2 Device for the registered positioning of a sheet on the feedboard of a rotary printing press
02/1988
02/09/1988US4723489 Device for turning over sheets in rotary presses
02/04/1988DE3625308A1 Gear mechanism for a sheet-fed rotary printing machine
02/03/1988EP0254897A1 Transmission for transforming a rotational movement into an oscillating movement
02/03/1988EP0254847A2 Driving device for the front grippers of a printing machine
02/02/1988US4722276 Air blast for preventing contact of wet ink sheets with printing press delivery mechanisms
01/1988
01/26/1988US4721041 Device for a series-produced sheet-fed offset rotary press
01/19/1988US4719854 Resilient sheet gripper for a sheet-fed rotary printing press
01/13/1988EP0252602A1 Sheet gripper for printing machines
01/12/1988US4718343 Resilient sheet gripper for a sheet-fed rotary printing press
01/12/1988US4718342 Resilient sheet gripper for a sheet-fed rotary printing press
01/07/1988EP0250963A2 Driving device for the front grippers of a printing machine
01/07/1988EP0250732A1 Method for the production of structured gripping areas on sheet grippers or sheet gripper pads
01/07/1988DE3710756A1 Sheet gripper device
01/07/1988DE3710355A1 Sheet-gripper device
01/05/1988US4716828 Resilient sheet gripper for a sheet-fed rotary printing press
01/05/1988US4716827 Coupling for a sheet fed rotary printing press
12/1987
12/08/1987US4711172 Machine having a plurality of working stations for successively processing a sheet of material running through the machine
11/1987
11/26/1987DE3710341A1 Transfer cylinder in printing machines
11/26/1987DE3638322A1 Sheet-conveying device in sheet deliverers of printing machines
11/12/1987DE3700375A1 Device for register correction
11/11/1987CN87102813A Rotary printing press protecting equipment
11/04/1987EP0243737A2 Sheet-turning cylinder for a rotary sheet-printing machine
11/04/1987EP0243700A2 Safety device for a rotary printing machine
10/1987
10/27/1987US4702470 Paper supplying device for perfecting printing machine
10/27/1987US4702469 Apparatus and method for aligning sheets
10/22/1987DE3643915A1 Sucker in turning drums of printing machines
10/22/1987DE3641439A1 Sucker controls in sheet-conveying cylinders
10/22/1987DE3641013A1 Stripper roller control on inking and damping units in printing machines
10/21/1987EP0241663A1 Apparatus for conveying and overturning sheets for sheet manipulating machines
10/20/1987US4700626 Reversing gripper of one side and perfecting printing press
10/08/1987DE3638452A1 Sheet-conveying cylinder
10/07/1987EP0239830A2 Device for adjusting the relative rotational position between a toothed wheel and a coaxal toothed crown
10/06/1987US4697804 Sheet feeder for rotary printing machines
10/06/1987US4697512 Sheet gripper system for a printing press
09/1987
09/30/1987EP0238704A2 Sheet-Fed press
09/29/1987US4697246 Method and apparatus for detecting the engagement of a proper number of articles
09/29/1987US4696465 Method and device for aligning sheets
09/29/1987CA1227506A1 Combined sheet fed rotary printing machine for securities, in particular bank-notes
09/08/1987US4691632 Method and apparatus for attaching anti-smear net to printing press transfer cylinder
09/01/1987US4690054 Sheet feed drum for rotary presses
08/1987
08/25/1987US4688784 Covering for sheet-supporting cylinders and drums in rotary offset printing presses
08/18/1987CA1225671A1 Method and device for the in-register feeding of sheets on sheet-processing presses
08/12/1987EP0231758A2 Device for taking over and further transporting folded articles
08/12/1987CN87100582A Sheet feeding cylinder for rotary press
07/1987
07/29/1987EP0230032A2 Sheet transfer drum between the printing units of a rotary printing machine
07/07/1987CA1223899A1 Method for aligning sheets
07/02/1987DE3638294A1 Sheet gripper
06/1987
06/24/1987EP0226233A1 Method of and device for printing images on halves of both sides of sheets
06/16/1987EP0225567A2 Sheet-turning device for rotary-printing presses with a line construction
06/02/1987US4669715 Sheet turning device for small offset printing machines or printing units
05/1987
05/26/1987US4667952 Guiding drum for sheet-fed printing machines, especially for cardboard
05/26/1987CA1222161A1 Combined rotary printing machine
05/19/1987US4665823 Paper support bar for a sheet-fed printing press
05/12/1987US4664032 Vertically adjustable gripper supports for the grippers of reversing drums of perfecting presses
05/12/1987US4663982 Governor device for printer
05/05/1987US4662277 Rotary printing machine with sheet reversal and transport apparatus
04/1987
04/22/1987EP0218874A2 Rotary sheet offset printing machine with line construction
04/15/1987EP0218092A2 Multicolour rotary offset printing machine for sheets
04/09/1987DE3628788A1 Blower device in printing machines
04/09/1987DE3535964A1 Drawing-in device, in particular for sheet-type data carriers to be drawn into an accounting machine
04/02/1987DE3629720A1 Sheet-conveying device in printing machines
04/01/1987EP0216046A2 Clutch for a rotary sheet-printing machine
04/01/1987EP0216045A2 Clutch in a rotary sheet-printing machine
03/1987
03/25/1987EP0215248A2 Sheet turning device for a rotary printing press
03/12/1987DE3629003A1 Sheet-fed offset printing machine
03/11/1987EP0213398A2 Spring mounted gripper for sheet-fed rotary printing machines
03/11/1987EP0213397A2 Spring-mounted gripper for sheet-fed rotary printing machines
03/04/1987EP0212368A2 Spring-mounted gripper for sheet-fed rotary printing machines
03/04/1987EP0212367A2 Spring-mounted gripper for sheet-fed rotary printing machines
03/04/1987EP0212366A2 Spring-mounted gripper for sheet-fed rotary printing machines
03/04/1987EP0212365A2 Gripper arrangement for sheet-fed rotary printing machines
02/1987
02/19/1987DE3625495A1 Method for conveying printing products on rotary printing machines
02/19/1987DE3622515A1 Apparatus for conveying the sheets in deliverers of sheet-fed printing machines
02/17/1987US4643091 Electromagnetic clutch-brake positioning assembly
02/10/1987US4642455 Circuit arrangement using for a light barrier for detecting sheet-feeding faults in a printing press
12/1986
12/30/1986EP0205880A2 Sheet smoothing apparatus for the leading edge of a sheet in the feeding station of a sheet-fed rotary printing machine
12/17/1986CN85104700A Sheet transfer cylinder for rotary press machine
12/16/1986US4628817 Method of and arrangement for automatic adjustment of the operating mode of a switchable printing machine
12/09/1986US4627609 Sheet delivery device, especially for small offset printing machine
12/03/1986EP0203553A2 Gripper system
11/1986
11/25/1986US4624454 Sheet feeder for printing machines
11/11/1986US4621576 Sheet-fed rotary printing presses for single-side printing or first form and perfector printing
10/1986
10/29/1986CN86200769U Single paper sheet automatic feeding device for print machine
10/15/1986EP0197802A1 Offset printing machine for metal sheets
10/07/1986US4615520 Apparatus and method for aligning sheets
10/07/1986US4615265 Transfer drum for conveying sheets
09/1986
09/23/1986US4613125 Method and device for feeding sheets in register in a sheet-processing machine
09/23/1986CA1211764A1 Sheet feeding attachment for rotary printing machines
09/17/1986EP0194559A2 Gripper supports, adjustable in height, for the turning cylinder of perfecting printing machines
09/17/1986EP0194549A2 Gripper control device in a sheet-fed rotary printing machine
09/02/1986US4608925 Sheet transfer cylinder in sheet-fed rotary printing machines
07/1986
07/29/1986US4602518 Mechanism for selectively converting a continuous rotary movement to a phase-related single pivoting movement of a control lever
07/08/1986US4598641 Printing cylinder construction for sheet-fed offset rotary printing machine
07/08/1986CA1207348A1 Method for the in-register feeding of sheets
07/08/1986CA1207347A1 Method for the flow-feeding of sheets
07/02/1986EP0185965A2 Transfer cylinder for a rotary sheet-printing press
06/1986
06/24/1986US4596184 Printed sheet transport apparatus
06/11/1986EP0183928A2 Device for guiding sheets printed on one or both sides
06/03/1986US4592279 Sheet gripper for a printing machine
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