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:
May. 08, 2018
Filed:
Sep. 14, 2016
Konica Minolta, Inc., Chiyoda-ku, Tokyo, JP;
Tatsuhiro Noutomi, Hachioji, JP;
Hiroyuki Futami, Hachioji, JP;
Katsunori Takahashi, Hachioji, JP;
Kenichi Hayashi, Hino, JP;
Takashi Nara, Kawagoe, JP;
KONICA MINOLTA, INC., Chiyoda-Ku, Tokyo, JP;
Abstract
A fixing device includes: a fixing member; a pressure member pressed against the fixing member; a plurality of halogen lamp heaters configured to heat the fixing member; a temperature detecting unit configured to detect a temperature of the fixing member; and a control unit configured to perform half-wave control on at least one first halogen lamp heater by calculating an output Duty and performing energization or de-energization for each half-wave of an AC waveform, and perform switch on/off control on a second halogen lamp heater, the second halogen lamp heater being other than the first halogen lamp heater, wherein the first halogen lamp heater and the second halogen lamp heater have reference voltages satisfying the reference voltage of the first halogen lamp heater<the reference voltage of the second halogen lamp heater, the reference voltages being set in accordance with densities of contained halogen gases.