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. 16, 1996
Filed:
May. 31, 1994
Keiko Tonai, Kawasaki, JP;
Yoshihiro Tonomoto, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A color image forming apparatus which forms a monochromatic toner image or a toner image in a plurality of colors and which can considerably reduce power consumption, while preventing an offset at the time of fixing a toner image. The color image forming apparatus includes a toner image forming device for forming a monochromatic toner image or a toner image in a plurality of colors on a recording medium; first heating device, located on a toner image side of the recording medium for fixing the toner image on the recording medium by heat; second heating device located on an opposite side to the toner image side of the recording medium; and a controller for making an amount of power supply to the second heating device constant and changing an amount of power supply to the first heating device depending on whether the toner image is monochromatic or is in a plurality of colors, while making a set temperature of the first heating device constant. The controller sets the power supply of the fixing or fusing device as a function of whether the toner image is a monochromatic, plural colors or full colored toner image.