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:
Feb. 01, 2005
Filed:
Apr. 18, 2002
Yoshiaki Miyashita, Tokyo, JP;
Yoshiaki Miyashita, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus of the present invention includes an image carrier on which a developer is to be deposited by an electrophotographic system. A controller controls the amount of the developer to deposit on the image carrier by varying a potential for development. A reflection type sensor for sensing the amount of the developer deposited on the image carrier is made up of a light source and a light-sensitive device for. An adjusting device adjusts a set value set in the controller for controlling the amount of the developer to a target value. The sensor is of a diffuse reflection system and has a correcting function. The adjusting device causes the sensor to sense the amount of the developer deposited on a test patch, which is formed on the basis of a preselected set value, and then calculates an adjustment value of the set value on the basis of the amount sensed by the sensor and the target value.