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:
Feb. 19, 2019
Filed:
Mar. 22, 2018
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Hiroyuki Fuse, Sunto Shizuoka, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA TEC KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image processing apparatus comprises a heat roller configured to heat a sheet with heat generated by a plurality of heat generating elements and a controller configured to control a current supplied to the heat generating elements from an AC power supply. The controller controls a timing at which the current flows or does not flow to the heat generating elements according to a first set of control parameters, such that a total of a first sum of estimated absolute value magnitudes of a positive polarity current flowing to the heat generating elements during one duty cycle and a second sum of estimated absolute value magnitudes of a negative polarity current flowing to the heat generating elements during the one duty cycle, is lower when the heat generating elements are controlled according to the first set relative when the heat generating elements are controlled according to other sets.