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:
Mar. 20, 1990
Filed:
Mar. 01, 1989
Chikara Imai, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image density control method for an image forming apparatus controls any of various image forming conditions such as toner density on the basis of a result of image density detection which is executed in a pattern detection mode. A plurality of pattern detection modes are provided each for developing the latent image of a pattern having a reference voltage under a different potential for development. A development gamma characteristic representative of a characteristic relationship between the amount of toner deposited on the resulting toner image representative of the pattern and the potential for development on the basis of the results of detection which are individually associated with the plurality of pattern detection modes. The image forming condition is controlled such that the determined development gamma characteristic substantially coincides with a target development gamma characteristic.