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:
Nov. 02, 2010
Filed:
Sep. 14, 2007
Junichi Awamura, Numazu, JP;
Akinori Saitoh, Numazu, JP;
Masahide Yamada, Numazu, JP;
Toyoshi Sawada, Hiratsuka, JP;
Takuya Seshita, Hiratsuka, JP;
Tomomi Suzuki, Numazu, JP;
Junichi Awamura, Numazu, JP;
Akinori Saitoh, Numazu, JP;
Masahide Yamada, Numazu, JP;
Toyoshi Sawada, Hiratsuka, JP;
Takuya Seshita, Hiratsuka, JP;
Tomomi Suzuki, Numazu, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A toner including a binder resin; a colorant; a release agent; and a modified layered inorganic material in which at least part of interlayer ions is modified with an organic ion, wherein the toner has a volume average particle diameter (Dv) of 3 to 7 μm and a ratio (Dv/Dn) of the volume average particle diameter (Dv) to a number average particle diameter (Dn) of the toner of 1.00 to 1.30, and wherein the release agent is included in the toner in an amount (A) of 1 to 10% by weight, and the ratio (B/A) of the amount (A) to the amount (B) of the release agent included in a classified toner in units of percent by weight is 0.7 to 1.3, wherein the classified toner satisfies the relationship (Dv'/Dn′−1)/(Dv/Dn−1)≦¾wherein Dv′ and Dn′ respectively represent the volume and number average particle diameters of the classified toner.