Inventor

Masaharu Ohkubo

Inventor

Yokohama, JP

Overview

1983–2002

Patent span

Physics

Primary field (CPC G)

Patents· 43 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G03Gprimary

G03GElectrography42%

H04NPictorial communication, e.g. television34%

G06TImage data processing or generation, in general8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

G06KGraphical data reading4%

B41BMachines or accessories for making, setting, or distributing type2%

B41JTypewriters2%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light2%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

6,477,319'Image recording apparatus which sends charasteristic/correction signals whenever new look-up table are selected or a pre-selected number of pages have been printed'2002 6,427,054'Image forming apparatus indicating the residue of toner and the deficiency of toner'2002 6,259,885'Image forming apparatus having transportation guide with fluorinated resin'2001 6,134,025'Dot image data output apparatus'2000 6,108,105'Dot image output apparatus'2000 6,052,549'Charging roller, and process cartridge and image-forming apparatus employing the roller'2000 6,002,106'Fixing device'1999 5,982,983'Image recording system accommodating various output devices'1999 5,859,948'Images processing apparatus for controlling binarized multi-value image data to convert pulse widths differently in at least two modes'1999 5,754,188'Data processing apparatus'1998 5,682,576'Fixing device'1997 5,659,869'Image fixing apparatus having pressure roller with fluorine surface active agent'1997 5,596,388'Process cartridge with an information feature and image forming apparatus for use with the same'1997 5,565,995'System for correcting a pulse-width-modulated signal in a recording apparatus'1996 5,543,899'Charging member having a foamed layer of a material with specified density and pore properties, charging device, process cartridge and image forming apparatus featuring the charging member'1996 5,541,711'Charging member having a cavity, charging device, process unit, and image forming apparatus having such a charging member'1996 5,534,344'Charging member having a loosely supported charger portion'1996 5,519,472'Developing apparatus using elastic blade'1996 5,508,811'Image reading and recording apparatus with correct image mode and mirror image mode'1996 5,488,487'Image forming apparatus, and modulating method therein'1996 5,475,472'Image process unit having charging member impedance correction feature'1995 5,463,473'Siphen for correcting a pulse-width modulated signal in a recording apparatus'1995 5,430,526'Image forming apparatus having weighting material in image bearing member and process cartridge usable with same'1995 5,353,104'Defining member for defining thickness of one-component developer and developing device equipped with it'1994 5,140,349'Recording apparatus'1992 5,124,802'Electrostatic lasar printer with a short side length of a modulation area formed by pulse width modulation set relative to a detected toner particle size'1992 5,091,734'Color image recording utilizing color correction in accordance with a predetermined order of recording of multiple color agents'1992 5,072,304'Image reading and recording apparatus with correct image mode and mirror image mode'1991 5,003,326'Color image processing method and apparatus'1991 4,937,600'Image forming apparatus'1990 4,855,765'Color image processing method and apparatus'1989 4,853,768'Color image processing apparatus with linear masking circuit having coefficients which vary in accordance with the levels of color component signals'1989 4,851,923'Recording apparatus for recording a reversed image of an original'1989 4,829,323'Color image recording apparatus'1989 4,725,854'Laser emitting apparatus and laser beam printer using same'1988 4,719,489'Recording apparatus having material feed mode dependent fixing control'1988 4,707,748'Image recording apparatus'1987 4,682,876'Information recording apparatus'1987 4,626,096'Image forming apparatus for forming a visual image in accordance with image signals'1986 4,563,694'Image information recording apparatus'1986 4,498,755'Developing device for use in electrophotography'1985 4,468,110'Method and apparatus for electrophotography'1984 4,369,729'Image recording apparatus'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–2002Patents assigned to CANON KK (43)· patent assignee history

1983–2002Based in Yokohama, JP· patent location history

1999Based in Shimomaruko, Ohta-ku, Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	43	1983–2002

Locations

Location	Patents	Span
Yokohama, JP	42	1983–2002
Shimomaruko, Ohta-ku, Tokyo, JP	1	1999