Cleaning blade and apparatus employing the same
AssigneeCanon Kabushiki Kaisha
InventorsTakeo Shoji, Hiroshi Sasame, Hiroyuki Adachi, Masahiro Watabe, Noriyuki Yanai
Life of this patent
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Abstract
The present invention provides a cleaning blade of a cleaning device for eliminating remaining toner powder from a surface of an image-holding member. The cleaning blade is constituted of silicone rubber. The silicone rubber contains not more than 5% by weight of a low-viscosity organosiloxane component, has rubber hardness within the range of from 40.degree. to 90.degree., and cause permanent compression set of not more than 20% according to JIS A.
Claims7
A cleaning blade of a cleaning device for eliminating remaining toner powder from a surface of an image-holding member, said cleaning blade being constituted of silicone rubber, and said silicone rubber;
- (a) containing not more than 5% by weight of a low-viscosity organosiloxane component,
- (b) having a rubber hardness within the range of from 40.degree. to 90.degree., and
- (c) exhibiting a permanent compression set of not more than 20% according to JIS A, wherein the silicone rubber of the cleaning blade contains a silica filler having a particle diameter of not more than 1.mu..
An apparatus unit mountable to and demountable from a main apparatus, said unit being constructed from at least one of a charging means and a developing means, together with a cleaning blade in one unit, said cleaning blade being constituted of silicone rubber, and said silicone rubber:
- (a) containing not more than 5% by weight of a low-viscosity organosiloxane component,
- (b) having a rubber hardness within the range of from 40.degree. to 90.degree., and
- (c) exhibiting a permanent compression set of not more than 20% according to JIS A, wherein the silicone rubber of the cleaning blade contains a silica filler having a particle diameter of not more than 1.mu..
An electrophotographic apparatus comprising:
- (a) a photosensitive member,
- (b) a latent image forming member,
- (c) a developing means for developing a formed latent image,
- (d) a transfer means for transferring a developed image onto a transfer-receiving material, and
- (e) a cleaning blade,
- said cleaning blade being constituted of silicone rubber, said silicone rubber:
- (1) containing not more than 5% by weight of a low-viscosity organosiloxane component,
- (2) having a rubber hardness within the range of from 40.degree. to 90.degree., and
- (3) exhibiting a permanent compression set of not more than 20% according to JIS A,
- wherein the silicone rubber of the cleaning blade contains a silica filler having a particle diameter of not more than 1.mu.. .mu..
A facsimile apparatus comprising:
- (a) an electrophotographic apparatus and
- (b) receiving means for receiving an image information from a remote terminal,
- said electrophotographic apparatus comprising:
- (1) a photosensitive member,
- (2) a latent image forming member,
- (3) a developing means for developing a formed latent image,
- (4) a transfer means for transferring a developed image onto a transfer-receiving material, and
- (5) a cleaning blade,
- said cleaning blade being constituted of silicone rubber, said silicone rubber:
- (i) containing not more than 5% by weight of a low-viscosity organosiloxane component,
- (ii) having a rubber hardness within the range of from 40.degree. to 90.degree., and
- (iii) exhibiting a permanent compression set of not more than 20% according to JIS A,
- wherein the silicone rubber of the cleaning blade contains a silica filler having a particle diameter of not more than 1.mu..
Dependencies are inferred from the claim text.