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Class Information
Number: 226/20
Name: Advancing material of indeterminate length > With material-responsive control means > To position material laterally > By shiftable material support > Laterally movable support > Responsive to photocell detection
Description: Devices wherein the sensing means responds to light by varying its electrical characteristics or by generating an electric current.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8515328 Medium conveying apparatus and image forming apparatus Aug. 20, 2013
7708176 Web transportation guiding apparatus and method May. 4, 2010
7654427 Suction roller and transporting apparatus using the same Feb. 2, 2010
7374072 Slide adjustable assembly for monitoring widthwise travel of an uncoiling steel band through a feeder system associated with a progressive die May. 20, 2008
7055726 Apparatus for modifying traveling position of paper web in paper web processing machine Jun. 6, 2006
6834823 Supply device for supplying rubber material to a cutting device Dec. 28, 2004
6659006 Tension control device for a printing press Dec. 9, 2003
6622625 Medium detecting method and device, and printer Sep. 23, 2003
6488193 Guide conveyor having a laterally adjustable deflector roller at the end Dec. 3, 2002
6460748 Device for adjusting the transverse position of a strip of packaging material Oct. 8, 2002
6269995 Friction drive apparatus for strip material Aug. 7, 2001
6192955 Apparatus and method for aligning webs Feb. 27, 2001
6138885 Web having alignment indicia and an associated web feeding and working apparatus Oct. 31, 2000
6000595 Method and apparatus for pinless feeding of web to a utilization device Dec. 14, 1999
5947617 Skew correction mechanism for a roll paper Sep. 7, 1999
5895535 Apparatus and method for measuring web alignment at a splice Apr. 20, 1999
5849123 Apparatus and method for aligning webs Dec. 15, 1998
5813337 Closed-loop printing control system Sep. 29, 1998
5783007 Method for splicing heat transfer printing paper Jul. 21, 1998
5769298 Guiding apparatus for webs having at least two thicknesses Jun. 23, 1998
5667122 Apparatus and method for controlling moving material and the like Sep. 16, 1997
5660675 Method and apparatus for splicing heat transfer printing paper Aug. 26, 1997
5645207 Apparatus and method for securing a moving fabric Jul. 8, 1997
5554262 Laser curtain edge tracking systems for papermaking machines Sep. 10, 1996
5489784 Method and device for monitoring an edge of a moving web with a bar of radiation Feb. 6, 1996
5483391 Method of and apparatus for adjusting deck mechanism of video cassette recorder Jan. 9, 1996
5335572 Method and apparatus for processing sheets of material in register, in particular for making security threads Aug. 9, 1994
5333770 System for controlling tape traveling height and tape guide with tape edge detector therefor Aug. 2, 1994
5328072 Device for locating the edges of moving webs Jul. 12, 1994
5252991 Media edge sensor utilizing a laser beam scanner Oct. 12, 1993
5208633 Belt position sensing for image registration May. 4, 1993
5141585 Method of and apparatus for preventing sidewise deviation of tape Aug. 25, 1992
5098507 Relieved plastic floor tile rolling press with an automatic alignment device Mar. 24, 1992
5087313 Paper web alignment system Feb. 11, 1992
5018888 Paper tension adjusting device and method for a printer May. 28, 1991
5019864 Electrophotographic film core device May. 28, 1991
4996563 Support means for electrophotographic film core and associated elements Feb. 26, 1991
4913328 Active tape tracking system with crown guide rollers for magnetic recorder/players Apr. 3, 1990
4848632 Method for guiding a moving web of material Jul. 18, 1989
RE32967 Web tracking system Jun. 27, 1989
4824001 Method for centering materials Apr. 25, 1989
4819528 Ribbon cutting apparatus having multiple, independently driven groups of cutting blades Apr. 11, 1989
4805892 Cross-track registration device for sheet transport system Feb. 21, 1989
4760945 Web-position controller Aug. 2, 1988
4760626 Guiding and spreading device Aug. 2, 1988
4731542 System and method for activating an operating element with respect to a moving substrate Mar. 15, 1988
4726501 Edge steerage apparatus Feb. 23, 1988
4685664 Sheet copying device Aug. 11, 1987
4582235 Automatic tape tracking system for magnetic recorder/players Apr. 15, 1986
4572417 Web tracking apparatus Feb. 25, 1986

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