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. 16, 2015
Filed:
Nov. 14, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Hideki Kubo, Kawasaki, JP;
Jun Hirabayashi, Yokohama, JP;
Megumi Uchino, Tokyo, JP;
Sumito Tanaka, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
This invention is to provide a technique of always obtaining a stable output image in image formation using toner. A supplier () supplies toner in a decided toner supply amount. A developing device () agitates the supplied toner and supplies the agitated toner to an electrostatic latent image formed on a photosensitive drum (), thereby developing a toner image on the photosensitive drum (). A correction amount calculation unit () estimates the toner charge amount by calculating a function model that approximates the variation characteristic of the toner charge amount using the toner consumption necessary for printing a print target image, the toner supply amount necessary for printing the print target image, and the toner agitation time. At least one of an image processing condition and a process condition is controlled using the estimated toner charge amount.