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:
Aug. 06, 2013
Filed:
Mar. 01, 2010
Akira Yoshida, Sagamihara, JP;
Nobutaka Takeuchi, Yokohama, JP;
Shin Hasegawa, Zama, JP;
Yoshiaki Miyashita, Komae, JP;
Kohta Fujimori, Yokohama, JP;
Kayoko Tanaka, Machida, JP;
Akira Yoshida, Sagamihara, JP;
Nobutaka Takeuchi, Yokohama, JP;
Shin Hasegawa, Zama, JP;
Yoshiaki Miyashita, Komae, JP;
Kohta Fujimori, Yokohama, JP;
Kayoko Tanaka, Machida, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a developer unit to store two-component developer which includes toner and carrier and develop an electrostatic latent image formed on the image carrier, a toner concentration detector to detect toner concentration in the developer unit, a toner supply unit to supply toner to the developer unit, and a controller to control toner supply amount by controlling the toner supply unit by comparing an output value of the toner concentration detector with a reference value stored in a memory and correcting difference between output values of the toner concentration detector at two or more process linear velocities in accordance with the toner concentration in the developer unit. A compensation amount for correcting difference between output values of the toner concentration detector that differ depending on the process linear velocity is adjustable in accordance with the toner concentration in the development unit.