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Class Information
Number: 101/246
Name: Printing > Rolling contact machines > Rotary > Gripper cylinder
Description: Machines, one of the cylinders having means for grasping the sheets.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8656835 Printing device and method including reduced torque disturbance of the rotating component of the printing device Feb. 25, 2014
8626043 Image forming apparatus and transfer device Jan. 7, 2014
8397635 Image transfer mechanism Mar. 19, 2013
8225715 Transfer drum between printing units of a sheet-fed printing press Jul. 24, 2012
8122827 Apparatus for turning a sheet during transport through a printing press Feb. 28, 2012
8042465 Method and device for switching between single-sided or straight printing mode and perfecting or recto/verso printing mode in a sheet-processing machine and reversing drum having the device Oct. 25, 2011
7918162 Apparatus for transporting sheets with a gripper device Apr. 5, 2011
7849794 Device for transporting sheets in straight printing or perfecting operation by way of tongs grippers Dec. 14, 2010
7849795 Apparatus for adjusting gripper-base height of sheet-fed printing press Dec. 14, 2010
7770517 Printing press Aug. 10, 2010
7735829 Method and apparatus for turning a sheet during its transport through a printing press Jun. 15, 2010
7628109 Image transfer mechanism Dec. 8, 2009
7412925 Device for changing over gripper control in a turning configuration of a sheet-processing machine Aug. 19, 2008
7412927 Printing machine with gripper retraction mechanism for safe operation of the printing machine Aug. 19, 2008
7367264 Method and apparatus for treating sheets including a vacuum roller for retaining sheets in curved configuration May. 6, 2008
7325493 Sheet-fed rotary printing press having a three-drum reversing device and method of transporting a sheet through a three-drum reversing device Feb. 5, 2008
7325494 Sheet convey apparatus for sheet-fed offset rotary printing press with convertible press mechanism Feb. 5, 2008
7320281 Method of varying a drum profile of a vario drum and vario drum for implementing the method Jan. 22, 2008
7207265 Devices for turning sheets in a sheet-fed rotary printing machine Apr. 24, 2007
7156021 Machine for processing sheets of printing material Jan. 2, 2007
7152528 Digital printing machine Dec. 26, 2006
7107904 Liquid feeder including impression cylinder having gripper unit and cover member Sep. 19, 2006
7104194 Cylinder apparatus with a circumferentially movable operating member and swingable levers to fix and release operating member in a selected position Sep. 12, 2006
7000540 Method of operating a machine processing printing material sheets Feb. 21, 2006
6955123 Printing machine with equilibrium or equalization of moments or torques Oct. 18, 2005
6912952 Duplex printing system Jul. 5, 2005
6901858 Plate cylinder of a printing press Jun. 7, 2005
6883429 Quality inspection apparatus for double-sided printing machine Apr. 26, 2005
6862985 Guiding device for metal-sheet printing machines and metal-sheet painting machines Mar. 8, 2005
6857364 Clutch for drive elements of a printing machine Feb. 22, 2005
6851361 Reversing or turning assembly of a sheet-processing machine Feb. 8, 2005
6810806 Printing machine with compensation elements for compensating speed differences and transfer errors between printing groups and method of transferring printed sheets in such a printing machine Nov. 2, 2004
6722276 Devices for turning sheets in a sheet-fed rotary printing machine Apr. 20, 2004
6705227 Recto and verso printing press having upper and lower grippers and gripper pad with common center line Mar. 16, 2004
6698351 Double-sided printing press Mar. 2, 2004
6691611 Method and apparatus for guiding and transferring a sheet in a printing machine Feb. 17, 2004
6659008 Device having a cylinder including a gripper system Dec. 9, 2003
6601501 Paper discharging device of screen printing machine Aug. 5, 2003
6536340 Sheet-fed rotary printing press with convertible mechanism Mar. 25, 2003
6499395 Offset printing machine with impression cylinder gripper and sheet feed cylinder gripper Dec. 31, 2002
6422141 Multi-color offset printing method and apparatus Jul. 23, 2002
6354206 Printing machine cylinder and clamping device for firmly clamping a cylinder packing Mar. 12, 2002
6308620 Printing press having a multiply-positioned and multi-functioned sheet guiding cylinder Oct. 30, 2001
6263794 Gripper for a sheet-transporting cylinder or drum of a rotary printing press Jul. 24, 2001
6250221 Imaging system having external drum and method for producing drum Jun. 26, 2001
6138565 Method and apparatus for guiding sheets on a guide blade in printing machines Oct. 31, 2000
6098537 Stencil printer having back press roller with clamp and movable wall member Aug. 8, 2000
6038976 Suction-air control device Mar. 21, 2000
5974683 Sheet inspection apparatus for sheet-fed offset printing press Nov. 2, 1999
5862755 Rotary printing-machine cylinder having a variable outer diameter Jan. 26, 1999

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