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:
Nov. 10, 1992
Filed:
Jul. 22, 1991
Yoshihiro Nakashima, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus for uniformly charging the surface of a photoconductive element, exposing the charged surface of the photoconductive element imagewise to electrostatically form a latent image, and developing the latent image by a toner or similar developer. A linear equation is produced which is a reference representative of the input-output characteristic of a sensor responsive to the surface potential of the photoconductive element. The linear equation is used to calculate an accurate surface potential matching the output of the sensor. A bias voltage for development or similar image forming condition is controlled on the basis of the calculated surface potential.