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. 08, 2009
Filed:
Feb. 04, 2008
Atsushi Ochi, Numazu, JP;
Harunobu Ogaki, Suntou-gun, JP;
Kazunori Noguchi, Susono, JP;
Hiroki Uematsu, Suntou-gun, JP;
Masataka Kawahara, Mishima, JP;
Atsushi Ochi, Numazu, JP;
Harunobu Ogaki, Suntou-gun, JP;
Kazunori Noguchi, Susono, JP;
Hiroki Uematsu, Suntou-gun, JP;
Masataka Kawahara, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for preparing in high productivity and stably an electrophotographic photosensitive member having depressed portions on its surface, is provided. The method is characterized in that a coating liquid for a surface layer which includes a solvent including a hydrophilic solvent and a hydrophobic solvent and a polymer compound soluble in the hydrophobic solvent is used; the hydrophilic solvent has a boiling point equal to or higher than that of the hydrophobic solvent; the hydrophilic solvent has a dipole moment of 0 or more and less than 2.8, obtained by a structure optimized calculation using a semiempirical molecular orbital calculation; the total mass of the hydrophobic solvent is 50 mass % or more and less than 100 mass % of the total mass of the solvent included in the coating liquid for a surface layer; and after the coating liquid for a surface layer is applied, the depressed portions are formed by condensation on the surface on which the coating liquid for a surface layer is applied.