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:
Jan. 08, 2002
Filed:
Sep. 21, 2000
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
A color image forming apparatus according to the invention includes an intermediate transfer member for transferring a color image onto a paper sheet, a second transfer roller capable of directly transferring, onto a paper sheet, a toner image formed on a photosensitive member to transfer a black-and-white image onto a paper sheet, a first transfer roller for transferring, onto a paper sheet, a color image on the intermediate transfer member. Since the process of transferring a black-and-white image onto a paper sheet is separated from the process of transferring a color image from the intermediate transfer member, a black-and-white image can be transferred onto a paper sheet and fixed thereon immediately after development. Thus, the period required for copying a black-and-white image, in particular, the required first copying period of a black-and-white image can be shortened.