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:
Jun. 26, 1990
Filed:
Oct. 18, 1988
Applicant:
Inventors:
Shigeru Miyake, Ikeda, JP;
Tomio Nakaya, Yokohama, JP;
Assignee:
Ricoh Company Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; G01D / ; H04N / ;
U.S. Cl.
CPC ...
3461 / ; 358302 ; 346160 ;
Abstract
An apparatus for correcting the quantity of light from an optical printer arranged a plural number of luminous elements therein, which comprises a producing circuit for producing a plural number of timing signals of different pulse widths and output timing, and a combining circuit for combining the timing signals according to the correcting data, thereby driving the respective luminous elements based on a correcting signal obtained by combination thereof.