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. 03, 2013
Filed:
Jun. 24, 2011
Masashi Nagayama, Shizuoka, JP;
Mitsuo Aoki, Shizuoka, JP;
Hideyuki Santo, Shizuoka, JP;
Shigenori Yaguchi, Shizuoka, JP;
Masashi Nagayama, Shizuoka, JP;
Mitsuo Aoki, Shizuoka, JP;
Hideyuki Santo, Shizuoka, JP;
Shigenori Yaguchi, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
In the image forming method, a color toner image and a transparent toner image are formed using a first developing device containing a first developer including color toner and carrier, and a second developing device containing a second developer including transparent toner and carrier. At least the second developing device includes a developer bearing member bearing the second developer for developing an electrostatic image; a developer supplying passage supplying the developer to the developer bearing member while feeding the developer in a first direction; and a developer feeding passage separated from the developer supplying passage at a central portion thereof and feeding the developer used for development in a direction parallel to the first direction. The transparent toner includes a resin and a lubricant and has viscoelastic property such that loss tangent has a peak with height of not less than 3 at a temperature of from 80° C. to 160° C.