Contact pressure setting method and image forming apparatus
AssigneeOki Data Corporation
InventorsTakanori Mimura, Junichi Ito, Shinichi Otani
Life of this patent
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Abstract
A contact pressure setting method of setting a contact pressure between contact members of an image forming apparatus. A film member is inserted into a gap between the contact members and the contact pressure is set so that a pulling force to pull out the film member lies within a predetermined range. Thus, the contact pressure can be accurately and easily recognized and the contact pressure can be set to be uniform.
Claims12
A contact pressure setting method of setting a contact pressure between a photosensitive body and a developing roller of an image forming apparatus, comprising the steps of:
- inserting a polyethylene film between the photosensitive body and the developing roller, the film having a thickness generally equal to 0.03 mm and a width generally equal to 5 mm;
- and
- setting said contact pressure so that a pulling force to pull out said film is equal to or larger than 30 gf.
A contact pressure setting method of setting a contact pressure between a photosensitive body and a developing roller of an image forming apparatus, comprising the steps of:
- inserting a polyethylene film between the photosensitive body and the developing roller, the film has a thickness generally equal to 0.03 mm and a width generally equal to 5 mm;
- and
- setting said contact pressure so that a frictional force between said film and the photosensitive body and the developing roller is equal to or larger than 30 gf.
An image forming apparatus for developing an electrostatic latent image on a photosensitive body by allowing said photosensitive body to be come into contact with a developing roller, wherein
- a contact pressure between said photosensitive body and said developing roller is set in such a manner that,
- when a strip-shaped polyethylene film whose thickness is equal to 0.03 mm and whose width is equal to 5 mm is inserted into between said photosensitive body and said developing roller, a frictional force between said polyethylene film and both of said photosensitive body and said developing roller is equal to or larger than 30 gf.
Dependencies are inferred from the claim text.