The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 1989
Filed:
Jan. 15, 1988
Applicant:
Inventor:
Kenichirou Asada, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; G01D / ; G01D / ;
U.S. Cl.
CPC ...
358300 ; 358296 ; 346108 ; 346155 ;
Abstract
An image forming apparatus which produces image data by reading an original document, modulates a light beam to be radiated from a light emitting element by the image data, and exposes an electrophotographic conductive element imagewise by the light beam modulated. The power of the modulated beam is varied dot by dot in association with tones. The apparatus renders multiple tones without lowering resolution.