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. 18, 2002
Filed:
Oct. 03, 2000
Applicant:
Inventors:
Noriyuki Tajima, Osaka, JP;
Noboru Katakabe, Kyoto, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03G 1/501 ; G03F 1/516 ;
U.S. Cl.
CPC ...
F03G 1/501 ; G03F 1/516 ;
Abstract
A color image forming apparatus capable of reducing the total printing time and having an excellent cost performance. In the four developments and primary transfer by the toner of yellow, magenta, cyan, and black for forming one sheet of color image, the development and primary transfer of the toner of the last color, black, is performed at a different speed from that of the toner of the other colors. Furthermore, the secondary transfer and fixation are performed at the same speed as of the development and primary transfer of the toner of the last color, black.