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:
Jul. 28, 1998
Filed:
Feb. 04, 1997
Tomoyuki Nishikawa, Tokyo, JP;
Tsukasa Yanashima, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A temperature controlling device for an electrophotographic imaging device which has a fixing unit including a heat roller, the fixing unit performing a fixing operation in which toner is fixed on a recording sheet. The temperature controlling device includes a temperature sensing system, arranged about an outer surface of the heat roller such that, for the purpose of temperature measurement, the heat roller is divided into a plurality of areas along a rotational axis of the heat roller, and a temperature of each area is detected by the temperature sensing system; an air blowing system which blows air to each of the plurality of areas separately; and a controller which controls the air blowing system to blow air in accordance with temperatures of the plurality of areas in order to prevent overheating of any portions of the heat roller.