Inventor

Susumu Imakawa

Inventor

Yokohama, JP

Overview

1988–1997

Patent span

Physics

Primary field (CPC G)

Patents· 14 as inventor

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

H04Nprimary

H04NPictorial communication, e.g. television38%

G02BOptical elements, systems or apparatus17%

G06KGraphical data reading17%

B41JTypewriters13%

G11BInformation storage based on relative movement between record carrier and transducer8%

G03GElectrography4%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light4%

PatentTitleYear

5,671,077'Multi-beam light source device and optical scanning apparatus using the multi-beam source device'1997 5,432,537'Optical recording apparatus capable of controlling optical power of laser diode array'1995 5,392,060'Half tone laser recording apparatus'1995 5,325,160'Half tone recording method and light source device for writing'1994 5,294,944'Color image forming apparatus having means for properly superimposing image colors on each other'1994 5,258,780'Beam recorder forming low density dots'1993 5,231,280'Focusing error detection apparatus using a first and second knife edge at different positions'1993 5,059,987'Synchronizing signal generating system'1991 4,962,431'Synchronizing signal generating system for laser scanner'1990 4,837,588'Synchronizing signal generating system for laser scanner'1989 4,834,477'Method of controlling the temperature of semiconductor laser in an optical device'1989 4,760,251'Optical scanning apparatus wherein image scanning clock signal frequency is corrected to render scanning speed constant'1988 4,757,191'Uniform intensity per pixel when the linear speed of a laser beam varies along a scanline'1988 4,729,617'Scanning clock generating device for optical scanner'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1997Patents assigned to RICOH KK (14)· patent assignee history

1988–1997Based in Yokohama, JP· patent location history

1988–1989Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	14	1988–1997

Locations

Location	Patents	Span
Yokohama, JP	11	1988–1997
Kanagawa, JP	3	1988–1989