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...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.

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Class 271/246 - Synchronized with intermittently-active conveyor-couple


Subclass of Class 271 - Sheet feeding or delivering
Definition: Device wherein the sheet-transporting means includes a gripper-couple
No. of patents: 102
Last issue date: 09/08/2009


1      
NumberTitleIssue Date
7584960Registration device and image forming apparatus having the same
A registration device usable with an image forming apparatus includes a registration roller, a registration lever to rotate between an alignment position to block and align a leading edge of a paper sheet supplied to the registration roller and an opening position t...
09/08/2009
7261292Method of feeding sheets to a sheet-processing machine, sheet-smoothing method and device
In a method and an apparatus for feeding sheets to a sheet-processing machine, the leading edge of the sheet is smoothed before the grippers are closed by further transport into the sheet-processing machine. A curvature or bend in the sheet transport direction is im...
08/28/2007
7201371Automatic paper-feeding structure
The invention is an automatic paper-feeding structure, which includes: a lifting member, which is arranged at the paper-feeding side of this automatic paper-feeding structure, and on which plural document papers are supported, and which may make the plural document ...
04/10/2007
7165765Sheet feeding apparatus and recording apparatus
A sheet feeding apparatus for separating and feeding a plurality of sheets stacked on a sheet stacking portion one by one includes feeding means for feeding the plurality of sheets stacked on the sheet stacking portion, separation means for separating the sheets one...
01/23/2007
7128317Moveable media dam
A moveable media dam comprises a media dam rotatably connected to a dam shaft, the dam shaft extending from a lever. An arm has at least one camming member and the lever is engaged by the at least one camming member. The arm operably engages a gear train and further...
10/31/2006
7063472Sheet skew correcting apparatus and image forming apparatus
A sheet skew correcting apparatus, incorporated in a printer or the like to correct a phenomenon of obliquely feeding a sheet called skewing. The apparatus includes a transporting path in which the sheet is transported, a pair of registration rollers, a pair of timi...
06/20/2006
7051496Envelope and insert transport and insertion machine
A high-speed envelope transport and insertion machine includes a slip-drive system having a plurality of belts configured to move envelopes along an envelope path at a first speed, an envelope transmission device disposed to input envelopes into the slip-drive syste...
05/30/2006
6969065Sheet transfer apparatus and sheet supply apparatus
A sheet transport apparatus includes the first transport rollers, the second transport rollers arranged at downstream of the first transport rollers to receive a sheet transported from the first transport rollers, a spacing device for setting the first transport rol...
11/29/2005
6956679Paper feeder apparatus and facsimile apparatus
A paper feeding apparatus is provided with a pressing arm that presses the separator to a paper feed roller, a document guide that has a pair of guide parts for pressing a document to the paper feed roller, and a spring part that applies spring force to the pressing...
10/18/2005
6921070Method and device for feeding sheets to a printing-technology machine
A method of feeding sheets to a printing-technology machine includes individually separating sheets from a sheet pile, conveying the sheets against movable lays for effecting an alignment thereof, and cyclically conveying the sheets from the lays to the machine. A c...
07/26/2005
6805347Deskew mechanism and method
The skew of a sheet of print media is precisely controlled by intentionally inducing print media deformation, so that cooperative mechanical and gravitational forces may be used to align the leading edge of the sheet. The sheet is driven into a nip region of deskew ...
10/19/2004
6755411Envelope transport module with vacuum ports for use in an envelope inserting machine
A module in an envelope insertion station for transporting an envelope to an enclosure material insertion location, which uses endless belts to move the envelope until it is stopped by rotatable stops. A fixedly-mounted vacuum module having vacuum ports provides a s...
06/29/2004
6749192Skew correction for a media feed mechanism
A media feed mechanism includes a picking device, a first feedroller and a second feedroller. The picking device picks a sheet of media from a media source. The first feedroller moves the sheet of media along a feed media path. During a skew correction phase, the fi...
06/15/2004
6681697Device for aligning sheets in a feeder of a sheet-processing machine, especially a printing press
A device for aligning sheets on a feeder of a sheet-processing machine includes a plurality of pivotably disposed front lays and a plurality of pivotably disposed top lays, the top lays being vertically adjustable. The front lays and the top lays are resp...
01/27/2004
6598873Paper feeder
A pickup roller is movable in a vertical direction and pulls out papers to the paper feed rollers, is provided. The pickup roller moves down towards the papers stacked on the paper tray. A front edge alignment member that aligns the front edge of the pape...
07/29/2003
6598870Document conveying apparatus and image-forming machine
A document conveying apparatus comprising a document conveying passage and a pair of document introduction rollers disposed at a document insertion portion, and a copier equipped with the document conveying apparatus. A cover frame is pivotably supported ...
07/29/2003
6592120Signature register for a signature reversing device
An apparatus for registering a signature moving along a surface, such as a drum, includes one or more pinch rollers for advancing the signature, and a register stop for stopping the advancement of the signature. The register stop is rotatable about an axi...
07/15/2003
6481709Device for the longitudinal alignment of plate elements within an infeed station of a machine working them
Device (1) for the longitudinal alignment of plate elements (2) within an infeed station of a machine working them. The aforementioned device is secured by two lateral brackets (9, 10) between which is settled a conveyor track for the said plate elements,...
11/19/2002
6293537Paper aligning apparatus
A device of aligning or arranging a paper in a printer comprising a transport part including feed roller and pinch roller, and which transports or counter-transport a paper between the rollers; a pickup roller which supplies a sheet of papers of paper loa...
09/25/2001
6142467Sheet feeder having an intermittent coupling member
A sheet feeder in a printer has a sheet loader, a pickup roller for feeding a cut sheet from the sheet loader, and a sheet feed roller for feeding the cut sheet supplied from the pickup roller for printing thereon data by a printing head. The pickup rolle...
11/07/2000
6062559Automatic document feeder and conveying belt mechanism of automatic document feeder
An automatic document feeder of a type having a document inverting mechanism beside a document sending-in path is disclosed which, when a document located at a document exposure position is to be inverted, operates a conveying belt mechanism in a predeter...
05/16/2000
5947469Device for laterally aligning sheets in a feeder of a sheet-fed rotary printing press
Device for laterally aligning sheets in a feeder of a sheet-fed rotary printing press wherein sheets having respective leading edges aligned at front lays of a feeder table are gripped by a gripper system of a pregripper in succession individually at an e...
09/07/1999
5873664Printer apparatus
Disclosed is a printer apparatus for correcting a slant of a medium at a medium insertion port. This printer apparatus corrects slants of the mediums having a variety of thicknesses. The printer apparatus comprises a slant correcting mechanism for correct...
02/23/1999
5772202Method and apparatus for registering sheets
A registration/indexing system is disclosed having a conveyor system (20), a gate (30), a plurality of hard rollers (40,50) and a plurality of soft rollers (60)....
06/30/1998
5761998Device for aligning on a feeding table of a sheet-fed printing press
A device for aligning sheets on a feeding table of a sheetfed printing press having at least one swivelably mounted top lay and at least one swivelably mounted front lay, and a control device for cyclically moving the at least one front lay and the at lea...
06/09/1998
5626075Sheet guiding cylinder
Sheet guiding cylinder of a printing press includes a cylinder casing rotatable about an axis of rotation, and having an outer cylindrical surface defining a skeletal framework; the skeletal framework being formed by guide vanes extending in longitudinal ...
05/06/1997
5566933Rail support for document queuing station
Document registration apparatus, including: a deck for supporting documents along a document path from an upstream position to a downstream position; a pair of transport belts for transporting the documents along the document path; a plurality of laterall...
10/22/1996
5544874Anti-skew device for envelope turner
Apparatus for turning an envelope. The apparatus includes: a pivotable feed deck for receiving an envelope; a device for stopping the envelope on the feed deck; a device for raising and lowering the downstream end of the feed deck; and a pivotable upper a...
08/13/1996
5486910Image forming apparatus having paper feeding mechanism for feeding sheet from sheet a storage portion to an image forming portion
In an electronic copying machine, a paper feeding mechanism includes a paper supply roller, a reversal roller, and an aligning roller. The aligning roller and the reversal roller are rotated by a motor through first and second transmission mechanisms, res...
01/23/1996
5465662Envelope positioning assembly
An envelope positioning assembly for a postage meter. A typical postage meter includes a registration wall, a deck and a printing apparatus for printing a postage indicia on an envelope. The envelope positing assembly includes: (1) a pin fixably mounted t...
11/14/1995
5435542Statement presenter mechanism for automated teller machine
A statement presenter for an automated teller machine includes a pair of upper belts (30) and a pair of lower belts (32). A paper stop (28) is mounted on a frame assembly (40). Cooperating arm members (42, 52) are operable to move the upper belts downward...
07/25/1995
5430280Passage ticket processing apparatus
A passage ticket is conveyered while being sandwiched between conveyer belts, and brought into contact with a rolling element. The passage ticket is held stationary by a stopper whose top end portion is positioned at a conveyer path. A solenoid is operate...
07/04/1995
5356263Buckle accumulator and method for accumulating sheets
An accumulator for accumulating sheets of material such as sheets of paper, the sheets being of substantially any length and the accumulation being in substantially any order. The accumulator includes a mechanism for moving a sequence of sheets along a fi...
10/18/1994
5265731Job separator
Business form components are stacked to separate them into different jobs, and after stacking are synchronously conveyed together to a pressure sealer, or similar device, for sealing the components together into a business form or are conveyed to subseque...
11/30/1993
5263705Document registration apparatus with skew adjustment
A document registration apparatus for use in a document inserting station or a document queuing station is provided. The apparatus includes a document registration unit having a plurality of laterally-spaced registration stops which pivot about a horizont...
11/23/1993
5255906Document registration apparatus
A document registration apparatus for use in a document inserting station or a document queuing station is provided. The apparatus includes a document registration unit having a plurality of laterally-spaced registration stops for stopping motion of a doc...
10/26/1993
5249794Feed device for a sorting machine for sorting flat objects such as postal items
The present invention relates to a feed device for feeding a sorting machine for sorting flat objects and comprising at least one input feeder for the objects and pockets to which the objects are fed vertically for transport, the feed device allowing the ...
10/05/1993
5230504Document registration apparatus with adjustment for handling documents of different lengths
A document registration apparatus for use in a document inserting station or a document queuing station is provided. The apparatus includes a document registration unit having a plurality of laterally-spaced registration stops which pivot about a horizont...
07/27/1993
5228671Sheet feeder with single sheet bypass
A sheet feeder with single sheet bypass sheet feeding capability has a sheet support platform for supporting a stack of sheets, at least one sheet feed roll fixedly mounted on a rotatable shaft and having a segmented feed portion for contacting and feedin...
07/20/1993
5174560Sheet supply apparatus
A sheet supply apparatus supplies a sheet such as an X-ray sheet film from a cassette to a recording device. The sheet supply apparatus has at least a pair of rollers for gripping and feeding a sheet, a feeding mechanism for feeding a sheet from a storage...
12/29/1992
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