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:
Dec. 01, 2015
Filed:
Mar. 13, 2015
Shingo Sakashita, Shizuoka, JP;
Satoshi Kojima, Shizuoka, JP;
Daisuke Misawa, Shizuoka, JP;
Hiroshi Endoh, Shizuoka, JP;
Tomoki Murayama, Kanagawa, JP;
Rintaro Takahashi, Kanagawa, JP;
Chihiro Kikuchi, Kanagawa, JP;
Shingo Sakashita, Shizuoka, JP;
Satoshi Kojima, Shizuoka, JP;
Daisuke Misawa, Shizuoka, JP;
Hiroshi Endoh, Shizuoka, JP;
Tomoki Murayama, Kanagawa, JP;
Rintaro Takahashi, Kanagawa, JP;
Chihiro Kikuchi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus, including: photoconductor; charging unit; exposing unit; developing unit containing toner; transfer unit; and fixing unit, wherein the toner includes external additive and base particles containing binder resin, colorant, and release agent, the toner has melt viscosity at 100° C. of 500 Pa·s to 8,000 Pa·s and the release agent has melt viscosity at 100° C. of 20 mPa·s to 30 mPa·s, the fixing unit includes fixing member that has roller or belt shape and contacts toner image transferred onto recording medium, and the fixing member includes release layer on surface thereof that is to be brought into contact with the toner image transferred onto the recording medium, and wherein the release layer satisfies the following expressions:45≦θ1≦60, and10≦θ1−θ2,