US Patent No: 8,194,111

Number of patents in Portfolio can not be more than 2000

Light-emitting element head, light-emitting element chip, image forming apparatus and signal supply method

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ALSO PUBLISHED AS: 20100118108
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Abstract

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The light-emitting element head is provided with: plural light-emitting element chips in each of which light-emitting elements are arrayed in a line; a lighting signal supply unit supplying lighting signals for setting whether or not the light-emitting elements emit light, each of the lighting signals being provided in common to the light-emitting element chips that belong to one of N groups into which the plural light-emitting element chips are divided, where N is an integer of 2 or more; and a clock signal supply unit supplying a first clock signal as a transfer signal for causing the light-emitting elements to sequentially emit light, and second clock signals for setting the light-emitting elements ready to emit light, the second clock signals being different from one another, being supplied to the respective light-emitting element chips belonging to the one of the N groups, and being supplied in common across the N groups.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJI XEROX CO., LTD.TOKYO7967

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ohno, Seiji Minato-ku, JP 99 201

Cited Art Landscape

Patent Info (Count) # Cites Year
 
FUJI XEROX CO., LTD. (3)
7,954,917 Exposure device, exposure system, light-emitting element circuit board and image forming apparatus 3 2007
8,098,271 Exposure device, light-emitting device, image forming apparatus and failure diagnosing method 2 2009
8,004,550 Light-emitting element head, image forming apparatus and signal supply method 1 2009
 
KYOCERA CORPORATION (2)
2011/0164,103 Light Emitting Element Array, Light Emitting Device, and Image Forming Apparatus 3 2007
2010/0177,155 Light Emitting Element Array, Light Emitting Device, and Image Forming Apparatus 3 2008
 
OKI DATA CORPORATION (2)
6,559,879 LED array head, circuit board, and LED array chip 12 1999
7,990,407 Drive circuit, light print head, and image forming apparatus 3 2009
 
CANON KABUSHIKI KAISHA (1)
5,969,744 Recording head and image forming apparatus using the same 12 1997

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