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. 05, 2007
Filed:
Aug. 25, 2005
Noriyuki Umezawa, Yokohama, JP;
Taizo Kimoto, Tokyo, JP;
Kenji Takano, Tokyo, JP;
Hisaaki Kawano, Chigasaki, JP;
Hiroshi Nakayama, Kawasaki, JP;
Osamu Takagi, Tokyo, JP;
Satoshi Kinouchi, Tokyo, JP;
Kazuhiko Kikuchi, Yokohama, JP;
Masahiko Ogura, Yokohama, JP;
Noriyuki Umezawa, Yokohama, JP;
Taizo Kimoto, Tokyo, JP;
Kenji Takano, Tokyo, JP;
Hisaaki Kawano, Chigasaki, JP;
Hiroshi Nakayama, Kawasaki, JP;
Osamu Takagi, Tokyo, JP;
Satoshi Kinouchi, Tokyo, JP;
Kazuhiko Kikuchi, Yokohama, JP;
Masahiko Ogura, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a fixing device and a digital photocopier which can shorten the time from an instruction of starting image formation to end of fixing. The fixing device is provided in a cylinder made of metal and having a small thickness, and includes a magnetic excitation coil. When the power source is turned on, all the electric power defined by subtracting an electric power amount consumed by components other than the fixing device is supplied to the magnetic excitation coil to perform heating. As the structural components of the photocopier and auxiliary devices added to the photocopier operate, the electric power defined by subtracting, from the maximum input electric power, the electric power consumed by the structural components of the photocopier and the auxiliary devices is supplied to perform heating. In this manner, the heat roller of the fixing device is heated, in a short time, to a temperature which enables fixing, so that the time required for first copying can be shortened.