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:
Apr. 01, 2014
Filed:
Nov. 23, 2009
Hirofumi Nakamura, Kanagawa, JP;
Keiko Matsuki, Kanagawa, JP;
Shingo Hirahara, Kanagawa, JP;
Takanori Suga, Kanagawa, JP;
Daisuke Haruyama, Kanagawa, JP;
Hirokazu Sakashita, Kanagawa, JP;
Masahiro Iwasaki, Kanagawa, JP;
Takayuki Yamashita, Kanagawa, JP;
Mitsuhide Nakamura, Kanagawa, JP;
Hirofumi Nakamura, Kanagawa, JP;
Keiko Matsuki, Kanagawa, JP;
Shingo Hirahara, Kanagawa, JP;
Takanori Suga, Kanagawa, JP;
Daisuke Haruyama, Kanagawa, JP;
Hirokazu Sakashita, Kanagawa, JP;
Masahiro Iwasaki, Kanagawa, JP;
Takayuki Yamashita, Kanagawa, JP;
Mitsuhide Nakamura, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
There is provided an electrophotographic photoreceptor including a conductive substrate; an intermediate layer; a photosensitive layer; and a surface layer, in this order, the surface layer including two or more charge transporting materials each including a reactive substituent and respectively having mutually different ionization potentials, in an amount of 90% by weight or more relative to the total solid content of the surface layer, and the content ratio X of each of the two or more charge transporting materials satisfying the following Formula (1). X(n) represents a content ratio (weight %) of a charge transporting material that has the nhighest ionization potential among the two or more charge transporting materials; X(n−1) represents a content ratio (weight %) of a charge transporting material that has the (n−1)highest ionization potential among the two or more charge transporting materials; and n is an integer of two or more and represents a variable equal to or lower than the number of charge transporting materials contained in the surface layer.(−1)≧()  Formula (1).