Charging member, process cartridge and image forming apparatus
First Claim
Patent Images
1. A charging member for charging a member to be charged while being in contact therewith, comprising:
- a conductive base for being supplied with a voltage;
a surface layer contactable to the member to be charged;
a sponge layer between said conductive base and said surface layer;
a 100% modulus M100 (kg/cm2) of said surface layer and a thickness d (cm) of the surface layer satisfied;
space="preserve" listing-type="equation">M.sub.100 ×
d≦
1.5(kg/cm).
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Abstract
A charging member for charging a member to be charged while being in contact therewith includes conductive base for being supplied with a voltage; a surface layer contactable to the member to be charged; a sponge layer between the conductive base and the surface layer; a 100% modulus M100 (kg/cm2) of the surface layer and a thickness d (cm) of the surface layer satisfied:
M.sub.100 ×d≦1.5 (kg/cm).
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Citations
9 Claims
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1. A charging member for charging a member to be charged while being in contact therewith, comprising:
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a conductive base for being supplied with a voltage; a surface layer contactable to the member to be charged; a sponge layer between said conductive base and said surface layer; a 100% modulus M100 (kg/cm2) of said surface layer and a thickness d (cm) of the surface layer satisfied;
space="preserve" listing-type="equation">M.sub.100 ×
d≦
1.5(kg/cm).
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2. A process cartridge detachably mountable to an image forming apparatus, comprising:
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an image bearing member; a charging member contactable to said image bearing member to electrically charge said image bearing member, said charging member including a conductive base for being supplied with a voltage, a surface layer contactable to said image bearing member and a sponge layer between said conductive base and said surface layer; wherein a 100% modulus M100 (kg/cm2) of said surface layer and a thickness d (cm) of the surface layer satisfy;
space="preserve" listing-type="equation">M.sub.100 ×
d≦
1.5(kg/cm). - View Dependent Claims (3)
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4. An image forming apparatus comprising:
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an image bearing member; a charging member contactable to said image bearing member to electrically charge said image bearing member, said charging member including a conductive base for being supplied with a voltage, a surface layer contactable to said image bearing member and a sponge layer between said conductive base and said surface layer; wherein a 100% modulus M100 (kg/cm2) of said surface layer and a thickness d (cm) of the surface layer satisfy;
space="preserve" listing-type="equation">M.sub.100 ×
d≦
1.5(kg/cm). - View Dependent Claims (5, 6, 7, 8, 9)
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Specification