Image forming apparatus and process cartridge
AssigneeFuji Xerox Co., Ltd.
InventorsDaisuke HARUYAMA, Masahiro IWASAKI, Takayuki YAMASHITA
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Abstract
There is provided an image forming apparatus including electrophotographic photoreceptor, a charging unit, an electrostatic latent image forming unit, a developing unit, and a residual toner removing unit, the surface protective layer of the electrophotographic photoreceptor having a surface free energy of about 10 mN/m to about 30 mN/m, the toner in the developing unit includes silica, and the residual toner removing unit including a blade member including a base layer and an edge layer having a type A durometer hardness of from about HsA 75 to about HsA 90 at 23° C., the hardness of the edge layer baing higher than the hardness of the base layer.
Claims20
An image forming apparatus, comprising an electrophotographic photoreceptor comprising an electroconductive substrate, and a photosensitive layer and a surface protective layer disposed on the electroconductive substrate in this order;
- a charging unit that charges the electrophotographic photoreceptor;
- an electrostatic latent image forming unit that forms an electrostatic latent image on the charged electrophotographic photoreceptor;
- a developing unit that develops the electrostatic latent image formed on the electrophotographic photoreceptor using a toner to form a toner image;
- a transfer unit that transfers the toner image on a transfer medium;
- and a residual toner removing unit that removes the toner remaining on the electrophotographic photoreceptor after transfer of the toner image,
- the surface protective layer of the electrophotographic photoreceptor having a surface free energy of from about 10 mN/m to about 30 mN/m,
- the toner in the developing unit comprising silica, and
- the residual toner removing unit comprising a blade member including a base layer and an edge layer having a type A durometer hardness of from about HsA 75 to about HsA 90 at 23° C., the hardness of the edge layer being higher than the hardness of the base layer.
A process cartridge, comprising an electrophotographic photoreceptor and at least one selected from the group consisting of a residual toner removing unit that removes the toner remaining on a surface of the electrophotographic photoreceptor, a charging unit that charges the electrophotographic photoreceptor, and a developing unit that develops an electrostatic latent image formed on the electrophotographic photoreceptor using a toner to form a toner image,
- the electrophotographic photoreceptor comprising an electroconductive substrate, and a photosensitive layer and a surface protective layer disposed on the electroconductive substrate in this order,
- the surface protective layer of the electrophotographic photoreceptor having a surface free energy of from about 10 mN/m to about 30 mN/m,
- the toner in the developing means comprising silica, and
- the residual toner removing unit comprising a blade member including a base layer and an edge layer having a type A durometer hardness HsA of from about 75 to about 90 at 23° C., the hardness of the edge layer being higher than the hardness of the base layer.
Dependencies are inferred from the claim text.