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. 07, 2022
Filed:
Dec. 27, 2019
Nok Corporation, Tokyo, JP;
Masaya Suzuki, Fujisawa, JP;
Kenji Sasaki, Fujisawa, JP;
Wataru Nemoto, Fujisawa, JP;
Tomohiro Kondo, Fujisawa, JP;
Abstract
A tubular fuser device rotates and is in contact with a sheet on which a positively charged toner image is formed to fix the toner image to the sheet. The fuser device includes a tubular substrate made of a metal, a rubber layer covering the outer periphery of the substrate, an adhesion layer covering the outer periphery of the rubber layer, and a surface layer made of a resin covering the outer periphery of the adhesion layer. In the fuser device, a charge decay ΔV at a moment 120 seconds after end of charging a surface of the surface layer to −1 kV is zero, and an electrostatic capacity per unit area C in a thickness direction of the fuser device is equal to or less than 3.30 pF/cm.