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. 30, 2009
Filed:
Jan. 24, 2005
Toshimasa Shiobara, Tokyo, JP;
Koji Aida, Tokyo, JP;
Toshimasa Shiobara, Tokyo, JP;
Koji Aida, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
A fixing device includes a non-contacting thermistor () disposed in the vicinity of the surface of a heat roller () and an upper cover temperature thermistor () for detecting the temperature of a pressure roller (). The calculated surface temperature (T) of the heat rolleris calculated based on the detected temperature (T) detected by the non-contacting thermistor (), the detected temperature (T) detected by the upper cover temperature thermistor (), the distance (L) from the non-contacting thermistor () to the surface of the heat roller () and the distance (L) from the non-contacting thermistor () to the upper cover ().