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:
May. 20, 2008
Filed:
Apr. 18, 2005
Tetsuo Yamanaka, Tokyo, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Tadashi Shinohara, Kanagawa-ken, JP;
Jun Hosokawa, Tokyo, JP;
Tetsuo Yamanaka, Tokyo, JP;
Kazuhiko Kobayashi, Tokyo, JP;
Tadashi Shinohara, Kanagawa-ken, JP;
Jun Hosokawa, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus including a plurality of detachable image forming devices each for forming a color image, an image carrying device for carrying the color images sequentially overlaid into a single color image, an exchange detecting device for detecting an exchange of the image forming devices, a test pattern reading device for reading a predetermined test pattern formed by the image forming devices on the image carrying device, and a controller configured to instruct the image forming devices to form the predetermined test pattern when either the detecting device detects the exchange, the fixing temperature is lower than a predetermined temperature, a color print adjustment command is provided, or the total number of color prints is greater than that at the last color print adjustment, and to perform color image position adjustment based on readings of the predetermined test pattern by the test pattern reading device.