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:
May. 05, 1992
Filed:
May. 21, 1990
Applicant:
Inventor:
Seiji Sakata, Yokohama, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358455 ; 355214 ;
Abstract
A digital copier having a density control system. The background of the original document is digitally erased based on the density of the background. The image data is separately controlled and not effected by the background erasing process. A manual operating control is provided in conjunction with an automatic density mode in order to control the image data. The particular level of the image data can be adjusted even in the automatic density mode.