US 6,983,120 B2
Cleaning blade, cleaning device, process cartridge, and image forming apparatus using them
Yasuyuki Ishii, Shizuoka (Japan); and Masato Koyanagi, Shizuoka (Japan)
Assigned to Canon Kabushiki Kaisha, Tokyo (Japan)
Filed on Jan. 29, 2004, as Appl. No. 10/765,856.
Claims priority of application No. 2003-023428 (JP), filed on Jan. 31, 2003; application No. 2003-155216 (JP), filed on May 30, 2003; and application No. 2004-015603 (JP), filed on Jan. 23, 2004.
Prior Publication US 2004/0213607 A1, Oct. 28, 2004
Int. Cl. G03G 21/00 (2006.01)
U.S. Cl. 399—346 23 Claims
OG exemplary drawing
 
1. A cleaning blade for removing remaining developer on an electrophotographic photosensitive body usable by an image forming apparatus comprising:
an abutment portion abutable to the electrophotographic photosensitive body; and
lubricant including:
insulating particles; and
conductive particles
wherein said lubricant coats said abutment portion,
wherein the median volume-based particle size, D50, of each of said insulating particles lies in a range of 0.2 to 1.0 μm and the median volume-based particle size, D50, of each of said conductive particles lies in a range of 0.4 to 4.0 μm, and
wherein the median volume-based particle size, D50, of each of said conductive particles lies in a range that is larger than the range of the median volume-based particle size, D50, of each of said insulating particles.