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Class 399/209 - Variable scanning (e.g., length)


Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein a means or method is provided for
No. of patents: 51
Last issue date: 04/17/2007


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NumberTitleIssue Date
7206534Process cartridge, developing cartridge and gripping part therefor
A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes a frame; an electrophotographic photosensitive drum; a developing device for developing an electrostatic latent image formed on t...
04/17/2007
6993411System and method for discrete time trajectory planning for lithography
A lithography system and method for calculating an optimal discrete time trajectory for a movable device is described. A trajectory planner of the lithography system calculates an optimal discrete time trajectory subject to maximum velocity and maximum acceleration ...
01/31/2006
6933959Optical scanning device and image forming apparatus
An optical box for positioning and fixing respective optical components is provided and functions as a housing thereof. A support stand for positioning and mounting the respective optical components, respectively, is formed separately from the optical box, and is lo...
08/23/2005
5828932Document reading apparatus and document reading method
Attributes of an original (image density and discrimination between a color image and a black-and-white image) stopped on a platen glass is read by a reading unit in which light is irradiated upward from a lamp and reflection light is finally read by an i...
10/27/1998
5585627Apparatus for scanning original image having a plurality of mirrors of different natural frequencies
In an apparatus for scanning an original image by directing light from an original irradiated with a light source to a photoelectric conversion device or a photosensitive member, the natural frequencies of a plurality of mirrors for reflecting the light f...
12/17/1996
5570206Image reading apparatus
An image reading apparatus comprises a plurality of line sensors for reading images at different positions of a document sheet, a drive unit for relatively driving the line sensors to said document sheet, and a control unit for controlling the drive unit ...
10/29/1996
5552866Copying apparatus for the photographic reproduction of a multi-dimensional object
A copying apparatus for the photographic reproduction of a multi-dimensional object capable of photocopying an original and a three-dimensional object, wherein one of an original and a three-dimensional object is disposed on a platen glass, and an il...
09/03/1996
5404206Image scanning mechanism using direct drive mechanism
A direct driving mechanism moves, in a direct drive manner, at least one of a sheet, on which an original image to be read is realized, and an image reading system for reading the original image so that the image reading system progressively reads all of ...
04/04/1995
5392109Compact scanner
A document handler for a scanner having a scanning assembly for scanning documents including a first imaging station with a slit-like scanning aperture therein through which the scanning assembly scans the document. A transport system is provided for movi...
02/21/1995
5309204Image forming apparatus with optical system control means
An apparatus for forming an image of a document on a photoreceptor includes a charging device for charging the photoreceptor so as to form an image region, an eliminating device for eliminating a charge on the photoreceptor to form a non-image region, and...
05/03/1994
5268717Image forming apparatus and image forming method
An image forming apparatus selects and combines necessary image sections from a plurality of documents thereby to obtain a combined image on one sheet of paper. The image forming apparatus is provided with an optical scanning system for exposing/scanning ...
12/07/1993
5241346Image forming apparatus with an image scanning apparatus and an automatic document feeder
An image forming apparatus of the present invention has an image forming device including an image scanning device and an automatic document feeder. A document on a platen located on the image forming device is positioned in a predetermined position. The ...
08/31/1993
5192975Image forming apparatus with an image scanning apparatus and an automatic document feeder
An image forming apparatus of the present invention has an image forming device including an image scanning device and an automatic document feeder. A document on a platen located on the image forming device is positioned in a predetermined position. The ...
03/09/1993
5023663Copying magnification setting device for an electrophotographic copying apparatus
An image forming apparatus that is capable of providing various copy ratios includes an original table that can receive an original document from an image carrier. The original is then illuminated, and a focusing lens system is capable of focusing reflect...
06/11/1991
4969014Document platen movement control device for an electrophotographic copying machine
An electrophotographic copying machine in which the document platen is adapted to be moved to a maximum extent regardless of the size of a document, at the time of the last reproducing operation in a series of reproducing operations. Even though the slide...
11/06/1990
4967232Copying apparatus with conveyer for conveying originals to predetermined copying position
A copying apparatus includes an automatic original conveyer, an original size detection sensor, a scanning optical system for transferring an image from an original to a photosensitive element, and a control portion for transmitting electrical command sig...
10/30/1990
4935779Single scan, multicolor imaging forming apparatus capable of adjusting the image density of each color
A single-scan, multi-color image forming apparatus includes a document support for the support of an original document and a scanner, including a light source that is supported for movement from one end of the document support toward the opposite end for ...
06/19/1990
4935778Electrophotographic image forming apparatus with fly wheel
An electrophotographic image forming apparatus having a rotatable, electrophotographically-sensitive drum; a latent image forming device for forming an electrostatic latent image on the sensitive drum; a development device for developing the electrostatic...
06/19/1990
4891669Scanning apparatus
A scanning apparatus of an image forming apparatus includes a shaft, a motor for rotating the shaft, a flange fixed to the shaft, a driving pulley, and a timing belt looped around the driving pulley. Upon movement of the timing belt, an optical unit is mo...
01/02/1990
4884096Multiple color image forming apparatus
A multiple color image forming apparatus using a plurality of developing devices selectively during one image forming process to reproduce a plurality of designated areas respectively in designated color, whereby color mixing and non-developing of the rep...
11/28/1989
4864366Automatic document feeder
An automatic document feeder for feeding documents in order to expose a document in a sheet through mode in which an optical system is fixed, a document is moved at constant speed, including; rollers for feeding documents one at a time from a document fee...
09/05/1989
4763164Image forming apparatus
An image forming apparatus capable of feeding or transporting recording medium of different sizes through the image forming path. A discriminating device determines whether or not a recording medium has reached a predetermined position in the transport pa...
08/09/1988
4708486Image-forming apparatus
Image-forming apparatus comprising an original document table on which an original document can be placed, an optical scanning mechanism for optically scanning an original document placed on the original document table, a moving mechanism which can cause ...
11/24/1987
4707111Image formation apparatus including means for manually and automatically feeding copy therethrough
An image formation apparatus has a first feeder for feeding a copy sheet from a container containing a number of copy sheets therein, a second feeder for feeding a copy sheet supplied manually thereto. Both feeders feed the copy sheet to an image formatio...
11/17/1987
4690545Copying apparatus
A copying apparatus including an original scanning device such that relative positions of a leading edge of a copy paper sheet and a front end of an image to be copied are controlled in accordance with a time interval between a point of time at the start ...
09/01/1987
4607951Compensating platen for dual mode image input terminals
A dual mode image input terminal having a linear scanning array with optical and illumination means supported on a carriage that, in a first scanning mode, reciprocates from a start-of-scan position to an end-of-scan position to scan a document opposite t...
08/26/1986
4607945Image forming apparatus
An image forming apparatus includes a document unit having a document table on which a document is placed and is reciprocated, a photoconductive drum, an exposure unit for exposing the photoconductive drum in order to form a latent image of a document pla...
08/26/1986
4600293Photocopying apparatus and method wherein the optical scanner acts as an alignment guide
A copy machine includes a document table on which a document is placed aligning at the left end with the left end of the document table, and a lamp, under the document table, which scans from left to right for a distance corresonding to the width of a des...
07/15/1986
4595273Copying apparatus and method automatically sequentially copying two different pages of a document
In a copy machine, two documents are arranged side-by-side on a document table. The documents respectively are copied on copy sheets of the same size as that of the document. In an optical system for scanning the document in the direction of the width of ...
06/17/1986
4585331Optical scanning system utilizing linear drive motors
An optical scanning and illumination arrangement is provided for a document reproduction machine which includes a plurality of linear motors to drive the moving scan/illumination carriages. Each linear motor is under the control of a digital control circu...
04/29/1986
4564288Electrostatic recording apparatus
An electrostatic recording apparatus such as an electrophotographic copying machine includes a mobile light source being able to move reciprocatively and exposing an original copy at its forward going motion. Reflected light from the original copy exposed...
01/14/1986
4563079Image formation apparatus with variable scanning stroke
An image formation apparatus has a first feeder for feeding a copy sheet from a container containing a number of copy sheets therein, and a second feeder for feeding a copy sheet supplied manually thereto. Both feeders feed the copy sheet to an image form...
01/07/1986
4521099Copying apparatus
An image forming apparatus has a rotatable member, a plurality of processing devices for forming an image on the rotatable member and transferring the image to transfer material, a device for fixing the transferred image, circuitry for controlling the ope...
06/04/1985
4456366Image forming process control
An image forming apparatus for forming an image on a photosensitive medium, is provided with an image forming device having reciprocable member for applying image light to the photosensitive medium, a detector for detecting that the reciprocable member is...
06/26/1984
4453824Variable magnification copying apparatus
A variable magnification copying apparatus capable of not only one-to-one magnification copying but also reduction copying, and particularly a variable magnification copying apparatus of the slit exposure scanning type which is capable of two or more type...
06/12/1984
4436415Exposure process for use in a variable magnification copying machine
A photosensitive member is subject to a slitwise exposure. An imaging lens system is displaced in accordance with the magnitude of a magnification being utilized during a copying process which is switched. Disposed adjacent to the end face of a lens in th...
03/13/1984
4420246Multiple reproduction apparatus
An improved multiple reproduction apparatus is provided. The apparatus includes an original holder for holding thereon an original from which multiple copies are to be made and an optical system for leading a light image of the original to a desired posit...
12/13/1983
4407581Compact optical scanning system
A compact scan document system is enabled by adding motion to the scanning and projection components used in a folded optical system. A general and preferred velocity relationship is set for the system optical elements and a mechanical drive arrangement i...
10/04/1983
4392736Electronic copying apparatus for forming multiple images on a single sheet
An electronic copying apparatus comprises a device for holding a document to be copied, an optical scanning device for the document, a device which receives light reflected from the scanning device and forms a latent image of the document on a rotating ph...
07/12/1983
4383753Image formation apparatus
An image formation apparatus has a reciprocally movable member for scanning an original document, a device for forming an image on the basis of the scanned image by the reciprocally movable member, a driver for driving the reciprocally movable member to m...
05/17/1983
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