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:
Apr. 15, 2003
Filed:
Aug. 23, 2000
Tomofumi Yoshida, Hitachi, JP;
Masahiko Saito, Kitaibaraki, JP;
Akira Sasaki, Hitachi, JP;
Koichi Sato, Hitachinaka, JP;
Satoshi Narita, Hitachioota, JP;
Yoshitaro Ishii, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An image forming apparatus is capable of preventing with certainty the loading of a developing device an incorrect loading portion from being operated. The image forming apparatus includes a latent image holding body forming an electrostatic latent image, a developing device developing the electrostatic latent image to form a visible toner image, the developing device being detachably loaded in the image forming apparatus, a transfer device transferring the developed image onto a printing medium and a fixing device for fixing the transferred image. The image forming device can prevent an incorrect developing device loading in the image forming apparatus from being placed in a development enabled condition and can detect an active state of prevention.