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Class 399/205 - Having reference position (relative positioning)


Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein a means or method is provided for
No. of patents: 43
Last issue date: 12/13/2011


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NumberTitleIssue Date
8078085Image forming apparatus
In an image forming apparatus, a support frame configured to support a plurality of cartridges each including a photoconductor is allowed to be pulled out from a casing of the apparatus. A plurality of light-emitting parts configured to expose a corresponding photoc...
12/13/2011
7412177Image forming apparatus
An image forming apparatus has a latent image writing device that writes an electrostatic latent image on an image bearing member, a developing device that develops a toner image based on the electrostatic latent image, a transferring device that transfers the toner...
08/12/2008
7346206Optical object detector
An optical object detector including a feed path, a reference pattern facing the feed path, and an optical sensor configured to view the reference pattern through the feed path, absence of the reference pattern from the view of the optical sensor indicating presence...
03/18/2008
7218426Image reading apparatus and image-forming apparatus incorporating the image-reading apparatus
An image-reading apparatus for reading an image formed on a document is provided which includes an automatic document feeder, a dynamic-document reading section, a static-document reading section, and a document-covering member. A light source mechanism irradiates a...
05/15/2007
7209265Method, apparatus and computer program product for initializing image processing apparatus
An image processing apparatus including a scanner with a direct control section configured to control a scanning operation of the scanner so as to input image information from an original document and a main body configured to process the image information. The main...
04/24/2007
7174125Image forming apparatus
An image forming apparatus of the invention at least includes: a transport control component for controlling a transporting component so that transporting of the continuous paper is stopped when a print job is finished, the continuous paper is back-transported to an...
02/06/2007
7107003Image forming apparatus and document size determination method thereof
A image-forming apparatus has a light projection unit for projecting light onto a document. A reflection plate having a predetermined pattern corresponding to a size of the document reflects the light projected onto the document. The light reception unit receives th...
09/12/2006
6963430Image reading apparatus
An image reading apparatus which enables a reduction of FCOT by omitting a home position search and a shading compensation after an input of a reading instruction for a succeeding original when reading different originals successively. ...
11/08/2005
6961154Image reading apparatus and image-forming apparatus incorporating the image-reading apparatus
An image-reading apparatus for reading an image formed on a document is provided which includes an automatic document feeder, a dynamic-document reading section, a static-document reading section, and a document-covering member. A light source mechanism irradiates a...
11/01/2005
6606464Method and apparatus for image reading and image forming, with shading operation control for increased throughput
A method and apparatus for image reading and image forming. A shading operation is performed by initially setting an operation parameter necessary for the shading operation and an image reading operation. The shading operation is then performed, an image ...
08/12/2003
6564028Method of initializing an image reading device
An image processing apparatus, method, and computer program product including a carriage for carrying an image reading device; a white plate arranged above a track of the carriage, and read by the image reading device for adjusting a reading level; a home...
05/13/2003
6009281Flash device
A flash device comprising a power source; a main capacitor adapted to be charged by the power source; a flash firing unit operable to consume charge stored in the main capacitor to emit a flash light; a switching unit disposed in a discharge loop for the ...
12/28/1999
5946539Image forming apparatus having a reference position preventing blockage of an optical path
Lights passing in the range of an optical path L1 to an optical path L2 are blocked off by a lead register 201 and, therefore, the light from a light source is prevented from reaching the range of a position P1 to a position P2. Lights in the range of an ...
08/31/1999
5659855Electrophotographic image member with magnetic property and image forming apparatus
An image forming apparatus uses an endless belt image member having a magnetic strip along one or more edges. A linear printhead is flashed in response to a magnetic encoder signal in the magnetic strip. Preferably, the apparatus has first and second line...
08/19/1997
5625469Apparatus for alignment of material to be scanned in a flat-bed scanner
A scanning apparatus providing an object focal plane for original documents to be scanned, wherein a scan carriage containing illumination, sensor, and optical elements is moved together to scan an original document and to obtain a digitized representatio...
04/29/1997
5278625Method and apparatus for lateral registration of sequential images in a singles pass, multi-LED print bar printer
An image bar recording system, which, in a preferred embodiment, utilizes a plurality of LED image bars, forms a plurality of latent images, which may subsequently be developed in different colors. The print bars are initially aligned so that each color i...
01/11/1994
5119135Selectively variable image positioning system for use in electrophotographic copying apparatus
An electrophotographic copying apparatus is disclosed having an imaging system for selectively shifting an image on an output copy sheet in response to a particular image shift selection by a operator. Electronic input signals, representative of selective...
06/02/1992
5061962Copier with a plurality of reference positions
A copier for electrostatically forming on a photoconductive element a latent image representative of a document which is laid on a glass platen by illuminating the document through a slit, developing the latent image, and then transferring the developed i...
10/29/1991
5049936Electrophotographic copier/duplicator having dual imaging apparatus
An electrophotographic copier/duplicator having a 17"×11" wide endless photoconductor includes single imaging apparatus for forming and processing a single 17"×11" image at a time, within a 17"×11 " image frame of its photoconductor, and dual imaging a...
09/17/1991
4903079Variable magnification copier
A variable magnification scanning optical system for a copying machine includes a lens (10) for projecting an image of an original document (2) with a pre-selected magnification onto a moving imaging member (6). The scan speed may be varied relative to th...
02/20/1990
4873550Electrophotographic copier including means for sensing the size of an original document
An electrophotographic copier of the type moving an original document and optics relative to each other to expose a photoconductive element imagewise via the optics to thereby form a latent image on the photoconductive element, developing the latent image...
10/10/1989
4816867Electrophotographic copying machine
An electrophotographic copying machine comprising a document supporting glass plate for supporting an original document thereon, an optical system for scanning the document on the document supporting glass plate, a photoreceptor drum for recording the ima...
03/28/1989
4696564Image forming apparatus
An image forming apparatus includes an optical detection unit which detects the presence of a copy paper and determines an offset amount of the copy paper in the direction perpendicular to a feeding direction of the copy paper. An adjusting unit adjusts a...
09/29/1987
4685793Image forming apparatus
In an image forming apparatus for forming images at an image forming section after conveying sheet materials by the one side reference method, sheet materials of sizes smaller than a predetermined size are conveyed in accordance with a one side reference ...
08/11/1987
4639121Document registration system
The present invention is directed towards an optical scanning system for an electrophotograhic printing machine wherein a lens control system is provided to enable lens movement independent of lens movement which occurs during magnification changes. The l...
01/27/1987
4627708Photocopying apparatus
A photocopying apparatus is provided in which a moving area of a lens at the time of a magnification changing and that of an optical device such as a mirror unit overlap partly. At the time of the magnification changing, it is determined whether the optic...
12/09/1986
4618244Image forming apparatus capable of selectively optically scanning one or more documents to be copied during one scanning operation
An image forming apparatus including a document table for holding a document placed thereon, an optical scanner movably provided along the document table to optically scan the document placed on the table, first and second indicators or scales provided at...
10/21/1986
4530592Registration mechanism for a multimagnification reproduction apparatus
A flash exposure optical imaging system is provided which includes a light housing having a movable top and bottom surface. The top surface contains a document platen, the bottom surface a fixed, wide-angle projection lens. These surfaces are vertically t...
07/23/1985
4415259Variable magnification and reciprocal exposure copying method
A variable magnification and reciprocal exposure copying method in which the image of an original is introduced onto a photoconductor which is moved in a predetermined direction by reciprocating mirrors relative to the original, so that the photoconductor...
11/15/1983
4371255Electrophotographic copying method and apparatus of reciprocal original scanning type
The surface of a photoconductor is moved in a predetermined direction and the original is scanned reciprocally by the relative movement of an optical system relative to the original. The photoconductor is exposed not only at the forward original scanning,...
02/01/1983
4332461Electrical drive for scanning optics in a continuously variable reduction copier
A scanning continuously variable reduction electrophotographic copier includes a servo motor for driving the document scanning carriages. Servo motor, and therefore carriage motion parameters of velocity, duration of acceleration and deceleration, length ...
06/01/1982
4324485Electrostatic copying apparatus
In a reciprocating scan system, movement is stopped for a predetermined length of time between a scan stroke and a return stroke to prevent erroneous imaging of a photoconductive drum (12) which would result in unnecessary loading of a cleaning unit (26) ...
04/13/1982
4209248Continuously variable reduction copier optics systems
A continuously variable reduction optical system for document copiers including various embodiments. A scanning optical system embodiment is disclosed for corner referenced documents. Full-exposure optical system embodiments are disclosed for both single-...
06/24/1980
4139298Copying apparatus capable of producing copies differing in size from originals
The size of a copy to be produced from an original in document copying is changed by moving a lens and mirrors to vary the optical path length of an optical system while keeping the original and a photosensitive element in fixed positions. The lens and th...
02/13/1979
4120578Continuously variable reduction scanning optics drive
A continuously variable reduction scanning optical system wherein a preferred embodiment is disclosed with mechanisms for continuously adjusting the magnification ratio, the total conjugate length, scan speed, scan length, and leading edge registration. E...
10/17/1978
4116554Optical reduction system featuring the provision of borders
The optical system disclosed is incorporated in a copying machine and has provision for changing magnification of original documents of diverse sizes while maintaining a common image plane projection and enabling the use of common reference edges at a sel...
09/26/1978
4110028Drive system for multi-mode reproducing apparatus
A drive system for a multi-mode reproducing apparatus preferably of the electrostatographic type. The drive system is adapted to selectively drive sub-systems of the apparatus at a plurality of speeds. The drive system can be utilized to drive a document ...
08/29/1978
4095880Extended range variable magnification reproduction machine
A document reproduction machine having an extended range of magnifications employs a scanning optical system which is controlled as to scanning speed and distance of travel by the selected magnification. In an extended reduction copying range the speed of...
06/20/1978
4077710Lens shift mechanism
Apparatus for shifting a lens carriage including a variable magnification pancratic lens assembly having a plurality of relatively movable optical elements. The lens carriage is mounted to move a first lens element to a plurality of discrete positions alo...
03/07/1978
4033691Variable magnification reproducing apparatus
A reproducing apparatus for producing copies of a document selectively at one of a plurality of copy image magnifications. A photosensitive surface is arranged for movement at a given velocity. A plurality of document viewing positions corresponding to di...
07/05/1977
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