Patents
Sitemap › B41 - Printing; Lining machines; Typewriters; Stamps › B41F - Printing machines or presses › B41F 21 - Devices for conveying sheets through printing apparatus or machines
Patents for B41F 21 - Devices for conveying sheets through printing apparatus or machines (4,769)
06/1989
06/06/1989US4836103 Cylinder apparatus of sheet-fed rotary press
05/1989
05/30/1989US4833989 Axially shiftable sheet gripper assembly
05/24/1989EP0316586A2 Gripper point for a sheet-gripping device
05/24/1989EP0316490A1 Sheet turn over apparatus for sheet-fed rotary printing press
05/23/1989US4831929 Suction member fixing apparatus for sheet-fed printing press with turn-over mechanism
05/11/1989DE3835266A1 Device for sheet-conveying without smearing
05/02/1989US4825762 Sheet transport arrangement for printing machines
05/02/1989CA1253529A1 Device for withdrawal of printed sheets for the purpose of verification
04/1989
04/26/1989EP0312660A1 Suction member fixing apparatus for sheet-fed printing press with turn-over mechanism
04/25/1989US4824094 Device for engaging a sheet with maintenance of register and disposed in the feeder plate of a rotary press
04/25/1989US4823698 Sheet gripper assembly for a sheet-fed rotary printing press
04/25/1989US4823695 Sheet turn-over apparatus for sheet-fed rotary printing press
04/19/1989EP0311924A2 Rotary sheet-fed machine reversible from first impression to perfecting
04/18/1989US4821643 Switchable sheet fed rotary printing press
04/06/1989DE3829505A1 Sheet-conveying device in deliverers of printing machines
03/1989
03/30/1989DE3828066A1 Device for removing sheets and pieces of sheet
03/29/1989EP0308941A2 Delivery safety apparatus for sheet-fed printing press
03/28/1989US4815379 Sheet transfer cylinder between printing units of a rotary printing machine
03/28/1989US4815378 Method and device for printing images on halves of both sides of sheets
03/21/1989US4813353 Clamping sheet gripper for a sheet-fed rotary printing press
03/15/1989EP0307170A2 Sheet infeed mechanism
03/15/1989EP0306684A2 Device for pressing a sheet against the impression cylinder in a rotary sheet-fed printing press for multicolour printing
03/15/1989EP0306682A2 Device for conveying sheets through the printing zone between the offset cylinder and the impression cylinder in a rotary sheet-fed printing press
02/1989
02/16/1989DE3823544A1 Varnishing device in deliverers of printing machines
02/15/1989EP0303053A2 Sheet-transferring device
02/09/1989DE3823545A1 Block and guide
02/07/1989US4802663 Sheet smoother for the gripped edge of the sheet in a sheet-fed rotary printing machine
02/01/1989EP0301128A1 Skeleton wheels and methods for attaching webs thereto
01/1989
01/31/1989US4800813 Planetary transmission device for driving an oscillating auxiliary gripper of a printing press
01/25/1989EP0300133A2 Gripper surface for a sheet gripper device
01/10/1989US4796529 Sheet turning device for rotary presses of the in-line type
01/03/1989US4794856 Combined rotary multicolor perfecting press
12/1988
12/21/1988EP0295450A2 Processor-controlled input and output device
12/20/1988US4792132 Sheet feeder and inverter apparatus for sheet-processing machines, preferably for two offset printing machines disposed in tandem
12/20/1988US4791868 Shift-over device for controlling the turning drum grippers of a rotary sheet printing press
12/20/1988CA1246935A1 Sheet-fed rotary printing press for one-sided multi- colour printing or recto and verso printing
12/13/1988US4790244 Suction system for sheet guiding cylinders in printing machines
12/13/1988CA1246624A1 Procedure for aligning sheets
12/01/1988DE3817168A1 Sheet-conveying device for assisting sheet guidance
11/1988
11/29/1988US4787261 Device for setting a relative rotational position of a gearwheel and a ring gear which are coaxially mounted
11/23/1988EP0291721A2 Sheet-printing rotary press for single-sided polychromatic printing or for perfecting and repetition printing
11/17/1988EP0290775A2 Sheet-conveying device
11/08/1988US4783616 Device for slowing down the rotational speed of the sheet transfer and printing cylinder for single-sheet silk screen printing machines
11/08/1988US4782755 Process for transferring a sheet of paper from a table to a print cylinder in a printing machine, and an oscillating gripper unit for effecting this process.
11/03/1988DE3810787A1 Sheet-conveying element on transfer drums of sheet-fed printing machines
11/02/1988EP0289472A2 A silk screen printer
11/02/1988EP0288700A1 Device for advancing and orientating sheets in sheet-processing machines
11/01/1988US4781791 Dots, printing, etching, coating, smoothness
11/01/1988US4781370 Sheet gripping apparatus
10/1988
10/26/1988CN87102579A Apparatus for adjusting relatively rotation place between one gear and other coaxial gear ring
10/18/1988US4777876 Picture adjusting device in sheet-feed press
10/13/1988DE3736787A1 Sheet guide device in sheet deliverers
10/12/1988CN88101442A Paper transferring and positioning device of paper working machine
09/1988
09/20/1988US4771691 Sheet-fed press with impression cylinder having air suction mechanism
09/15/1988DE3736808A1 Device for controlling the grippers of a pregripping apparatus in sheet-processing machines
09/08/1988DE3736168A1 Adjusting drive for guide devices
08/1988
08/30/1988US4767112 Folded copy product transfer and transport apparatus
08/30/1988US4766810 Sheet feeder for printing bound sheets
08/24/1988EP0278992A1 Sheet reversing unit for sheet printing press
08/23/1988US4765654 Single-sheet printer paper and a method for its use
08/23/1988US4765239 Multi-impression systems with indexing of printing cylinder
08/11/1988DE3800413A1 Device for clamping foils
08/11/1988DE3732719A1 Transfer of sheets from printing machine - involves endless chain provided with grippers
08/09/1988USRE32727 Rotary offset sheet printing machine for prime and verso printing
08/09/1988US4762065 For advancing and guiding the edge of a sheet
08/02/1988US4761003 Printed sheet removal assembly
07/1988
07/27/1988EP0275882A2 Conveying device for a sheet-fed rotary printing machine
07/26/1988US4759290 Device for controlling grippers in sheet-fed rotary presses
07/20/1988EP0275039A2 Device for transporting a sheet printed in a printing machine by means of chain transfer systems
07/12/1988US4756245 Printing press having various printing heads
07/07/1988DE3644446A1 Device for preventing sheets being lifted from a cylinder of a printing machine
07/06/1988CN87101186A Paper-feeding apparatus for printing machine
06/1988
06/29/1988EP0272469A2 Grippers for a printing machine
06/29/1988CN87209871U Contactless electronic edge-absorbing apparatus for printing and dyeing machine
06/28/1988CA1238663A1 Method and apparatus for detecting article engagement errors
06/22/1988EP0271666A2 Method for monitoring printed sheets in a collator
06/21/1988CA1238347A1 Covering for sheet-carrying cylinders and drums in rotary offset printing presses
06/08/1988EP0270054A2 Slip sheet insertion-delivery apparatus for sheet-fed printing press
05/1988
05/19/1988WO1988003478A1 Flatbed press and printing method
05/11/1988EP0266696A2 Sheet-fed rotary printing machine
05/05/1988DE3723039A1 Device for tensioning the chains in deliverers of printing machines
05/04/1988EP0265803A2 Device for transferring in register sheets between printing units of a multi-colour printing machine
05/04/1988EP0265802A2 Device for the vibration-free transferring of sheets between two double-sized impression cylinders of a multicolour rotary sheet offset printing machine
05/04/1988CN87201563U Paper distributor for high speed press and small type offset press
04/1988
04/28/1988DE3722675A1 Device for the production of holding surfaces for sheet grippers
04/27/1988EP0264839A2 Adjusting device for the reversing cylinder of a rotary sheet-printing machine
04/26/1988US4739704 Jaw folding device for a jaw cylinder of jaw-type folder
04/14/1988DE3723110A1 Device for conveying sheets in printing machines
04/14/1988DE3720812A1 Guiding device in deliverers of sheet-fed printing machines
04/05/1988US4735142 Sheet transfer drum
04/05/1988US4735141 Device for safeguarding a rotary printing mahine
04/05/1988US4735140 Coupling for a sheet fed rotary printing machine
03/1988
03/31/1988DE3714284A1 Sheet-gripper device for printing machines
03/30/1988EP0261413A2 Clamping gripper for sheet-fed rotary presses
03/30/1988EP0261412A2 Clamping gripper for sheet-fed rotary presses
03/30/1988EP0261354A1 Sheet feeder and layer
03/30/1988CN85104700B Sheet transfe cylinder for rotary press machine
03/22/1988US4732084 Sheet-fed rotary printing machine for single-side multicolor printing and perfector printing
03/15/1988CA1234012A1 Sheet-fed rotary printing press for one-sided multi- colour printing or recto and verso printing
03/09/1988CN87105244A Gearing for converting rotory motion to cyclic motion
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