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:
Sep. 11, 2012
Filed:
Feb. 12, 2010
Takenori Sueoka, Tsukuba, JP;
Takenori Sueoka, Tsukuba, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Constant current control is performed with a target current It in each delivery interval between recording materials to sample a control voltage Vapplied to a secondary transfer roller. A transition to the constant current control with the target current It is made after a recording material divided voltage according to a kind of the recording material is applied to the constant voltage Vat a head of the recording material. A voltage in which 0.9 is multiplied by addition of the sampled control voltage Vand the recording material divided voltage Vp according to the kind of the recording material is set to a lower limit value Vlimit to perform the constant current control, and the constant voltage Vlimit is applied to the secondary transfer roller when a control voltage is lower than the lower limit value Vlimit in a calculation stage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile