Image-forming roller, charge roller, method for inspecting image-forming roller, and method for inspecting charge roller
AssigneeSynztec Co., Ltd.
InventorsAtsushi Ikeda, Kenji Sasaki, Nozomu Suzuki, Satoshi Fukuoka, Kosuke Oura, Goki Inukai, Shogo Suzuki
Life of this patent
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Abstract
A charge roller includes a base and a surface layer formed on an outer peripheral surface of the base, with a contact angle between the surface layer and toluene being 6° or more, and a contact angle between the surface layer and tetradecane being 22° or more.
Claims10
An image-forming roller comprising:
- a roller core;
- and
- a surface layer formed on an outer peripheral surface of the roller core, wherein
- a material of the surface layer includes a surface roughness additive,
- a contact angle between the surface layer and toluene is 6° or more, and
- a contact angle between the surface layer and tetradecane is 22° or more.
A charge roller used for an electrophotographic apparatus comprising:
- a body;
- and
- a surface layer formed on an outer peripheral surface of the body, wherein a material of the surface layer includes a surface roughness additive,
- a contact angle between the surface layer and toluene is 6° or more, and
- a contact angle between the surface layer and tetradecane is 22° or more.
A method for inspecting an image-forming roller that includes a body and a surface layer formed on an outer circumferential surface of the body, to determine whether the image-forming roller is in good condition or not in good condition,
- the method comprising:
- determining that the image-forming roller is in good condition when a contact angle between the surface layer and toluene is 6° or more and when a contact angle between the surface layer and tetradecane is 22° or more.
A method for inspecting a charge roller that includes a base and a surface layer formed on an outer circumferential surface of the base, to determine whether the charge roller is in good condition or not in good condition,
- the method comprising:
- determining that the charge roller is in good condition when a contact angle between the surface layer and toluene is 6° or more, and when a contact angle between the surface layer and tetradecane is 22° or more.
Dependencies are inferred from the claim text.