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)
11/1983
11/08/1983US4413562 Chain-type transport apparatus, for use with printing machines
10/1983
10/18/1983US4409894 Rotary offset sheet selective prime, verso or multicolor printing machine and method
10/18/1983US4409741 Conveyor device for transferring freshly printed sheets
10/11/1983US4408525 Arrangement for low-vibration sheet transfer between printing units on multi-color printing presses
09/1983
09/27/1983CA1154304A1 Sheet transfer cylinder in rotary printing machines
09/21/1983EP0088885A1 Feeder for sheet handling machines
09/20/1983US4404905 Verso printing unit in the delivery of a sheet-fed rotary printing press
09/06/1983US4402267 Method and apparatus for handling printed sheet material
09/06/1983US4402266 Front lay device for sheet-fed rotary printing presses
08/1983
08/17/1983EP0085751A1 Rotary machine for offset printing on sheets
08/03/1983EP0085034A1 Stencil printing machine
08/02/1983US4395949 Sheet transport drum assembly in a rotary printing press
06/1983
06/29/1983EP0082260A1 Device for the side registration of sheets in a printing machine
05/1983
05/24/1983US4384524 Arrangement for spreading sheets evenly on impression cylinder of printing presses
04/1983
04/19/1983US4380331 Sheet feeding and aligning apparatus for rotary printing machine
04/05/1983US4378734 Sheet transfer cylinder for sheet-fed rotary printing machines convertible between first form and perfector printing
03/1983
03/22/1983US4377112 Deflection-compensated sheet gripper arrangement for rotary printing machine
03/16/1983EP0073955A1 Gripper for sheet handling equipment
03/01/1983US4375190 Printing press having a plurality of printing stations
02/1983
02/16/1983EP0071701A1 Side register device for sheets
02/08/1983US4372209 Sheet gripping jar arrangement
02/01/1983US4370928 Sheet fed rotary press having an auxiliary gripper system arranged below a feeding cylinder
01/1983
01/25/1983US4369964 Sheet feed apparatus for printer or the like
01/11/1983US4367679 Packing sheet overlaying device for offset printing machine
01/04/1983CA1138910A1 Conveyor device for transferring sheets between two printing units of a combined printing machine
12/1982
12/28/1982US4365553 Single-sheet rotary offset printing machine
12/07/1982US4362105 Sheet drawing device for a sheet-fed rotary press
12/07/1982US4362099 Adjusting device for sheet reversing in a sheet-fed rotary press
12/07/1982CA1136810A1 Method of maintaining key between silicone belt and vinyl resin blanket
11/1982
11/16/1982CA1135561A1 Duplicating machine with duplexing capability
11/09/1982US4357870 Driving mechanism for groups of adjustable sheet-gripping elements in a transfer cylinder of a sheet-fed printing machine
11/02/1982US4356766 Rotary offset sheet printing machine for prime and verso printing
10/1982
10/28/1982WO1982003599A1 Process color offset printing duplicator
10/26/1982US4355800 Paper feed control apparatus for use in sheet printing presses
10/13/1982EP0062168A1 Sheet delivering device with grippers carried by endless chains in rotary printing machines
10/06/1982EP0061607A1 Sheet transfer cylinder in rotary sheet printing machines with a device for correcting the print register
09/1982
09/22/1982EP0060255A1 Planetary conveyor system
09/21/1982US4350334 Conveyor device for transferring sheets between two printing units of a combined printing machine
09/15/1982EP0059944A1 Method and apparatus for handling printed sheet material
08/1982
08/10/1982US4343462 Rocking auxiliary gripper system for sheet processing machines
08/10/1982US4343241 Control device for suction gripper systems in sheet guiding cylinders
08/10/1982CA1129245A1 Sheet transport drum on rotary printing presses
07/1982
07/13/1982CA1127586A1 Document registering and feeding apparatus
06/1982
06/29/1982US4336930 Sheet transfer attachment
06/22/1982CA1126082A1 Sheet carrier
06/16/1982EP0053728A1 Apparatus for detecting defects of printing sheets
06/15/1982US4334473 Storage cylinder
05/1982
05/11/1982US4328961 Hold-down for use on feed table of printing press
04/1982
04/27/1982US4326618 Safety feed table release mechanism
04/01/1982WO1982000976A1 Planetary synchronizing device
04/01/1982WO1982000975A1 Planetary conveyor system
03/1982
03/10/1982EP0047166A1 A gravure colour printing press
03/09/1982CA1119459A1 Method of unstressing a sheet
02/1982
02/10/1982EP0045374A1 Gripper mechanism on cylinders of printing machines, especially in rotary sheet-printing machines
01/1982
01/19/1982US4311093 Sheet feeding assembly including provision for coordinated action of pre-gripper and front stop
01/13/1982EP0043424A1 Sheet offset printing machine for obverse and reverse printing
01/11/1982EP0038825A4 Centrifugal clamp on a high speed print drum.
12/1981
12/01/1981US4303014 Storage cylinder
11/1981
11/11/1981EP0039526A1 Transporting device for transferring freshly printed sheets
11/04/1981EP0038825A1 Centrifugal clamp on a high speed print drum.
10/1981
10/27/1981CA1111308A1 Ink jet printer
10/27/1981CA1111306A1 Transfer cylinder for perfector printing presses with two sheet carrier surfaces
10/20/1981US4295422 Camless drive of a swinging pre-gripper feeder
10/20/1981US4295421 Safety device for guarding nips in a sheet-fed rotary printing press
10/07/1981EP0036937A1 Sheet transfer cylinder for rotary printing machines
09/1981
09/30/1981EP0036496A1 Device for the lateral adjustment of sheets automatically conveyed to printing machines
09/29/1981US4292529 Misfeed detector
09/22/1981US4290595 Rotatable advance or forward gripper drum
09/15/1981US4289405 Color monitoring system for use in creating colored displays
08/1981
08/26/1981EP0034522A1 Machine with a short set-up time for the manufacture of cardboard boxes
06/1981
06/30/1981US4275876 Electrophotographic copying apparatus
05/1981
05/19/1981US4268021 Transportation arrangement for sheetlike recording carriers
04/1981
04/21/1981CA1099589A1 Duplexing copying system
04/07/1981US4260149 Sheet registration on feed table of printing press
04/02/1981WO1981000827A1 Centrifugal clamp on a high speed print drum
03/1981
03/17/1981CA1097721A1 Sheet feeding apparatus for use with copier/duplicators or the like
03/03/1981US4253896 Adherence during removal of printing transfer sheet
03/03/1981US4253396 Sheet gripper
02/1981
02/17/1981US4250810 Centrifugal clamp on a high speed print drum
01/1981
01/06/1981US4242959 Sheet carrier
12/1980
12/30/1980US4241659 Sheet transfer apparatus for rotary printing machines having serially arranged printing stations
12/30/1980US4241658 Duplicating machine with duplexing capability
12/30/1980CA1092437A1 Rotary sheet-fed printing machine
12/16/1980CA1091505A1 Means to connect printing presses in tandem
12/10/1980EP0019687A1 Apparatus for and method of sheet presence detection
10/1980
10/15/1980EP0016938A1 Sheet transfer cylinder in rotary printing machines
10/14/1980US4227459 Transfer drum for sheet-fed rotary printing presses
09/1980
09/30/1980US4225872 Ink jet printer
09/30/1980US4225129 Sheet guidance arrangement in printing-machine outfeed units
09/30/1980US4224873 Clamping gripper
09/16/1980US4222326 Mechanism for controlling and smoothing a conveyed sheet in a multi-color printing press particularly applicable to printing in the verso mode
09/09/1980US4221165 Printing machine having registering means
07/1980
07/08/1980CA1081039A1 Arrangement for the protection of a perfecting printing press
07/01/1980US4210079 Advancing cylinder for use in a printing machine
07/01/1980CA1080557A1 Sheet sensing device in a rotary printing press
06/1980
06/10/1980CA1079118A1 Change over device for the gripper movement on a turning drum on perfecting printing presses
05/1980
05/28/1980EP0011376A1 Photoelectric densitometer system
05/28/1980EP0011076A2 Sheet supporting device
05/27/1980US4204472 Duplexing copying system
05/27/1980US4204471 Printing machine transfer drum adjustable to variable sheet lengths
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