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, 2009
Filed:
Dec. 06, 2006
Hiroshi Nakahata, Abiko, JP;
Hiroshi Nakahata, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
At least one exemplary embodiment is directed to an image forming apparatus, which includes: a first to fourth image bearing members on which toner images of four colors of yellow, magenta, cyan, and black are formed respectively; a first rotatable polygon mirror for deflecting and scanning laser beams on the first to fourth image bearing members so as to form electrostatic latent images on the first to fourth image bearing members; a detachable fifth image bearing member on which a toner image of a color different from the four colors is formed; and a detachable optical unit including a second rotatable polygon mirror that deflects and scans a laser beam on the fifth image bearing member so as to form an electrostatic latent image on the fifth image bearing member.