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:
Jul. 13, 1999
Filed:
Apr. 28, 1994
Applicant:
Inventors:
Assignee:
Minolta, Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ; B41J / ; H04N / ;
U.S. Cl.
CPC ...
347131 ; 347240 ; 358298 ;
Abstract
An optical writing device by which an image with desired tone can be obtained. The optical writing device includes a write head and a modulation unit. A time for scanning of one picture element is divided into some periods by the modulation unit. The modulation unit judges whether the picture element will be in an imaged region or in a blank region and whether the picture element must be provided with a supplementary exposure value. The picture element will be provided with an accumulated exposure value corresponding to a desired level of tone by being provided with the supplementary exposure value by order of the modulation unit.