Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsShinya Suzuki, Haruhiko Omata
Life of this patent
Estimating the term…
Abstract
In an image forming apparatus wherein the slip of a transporting belt relative to a driving device due to a change in the surface state the inner surface of the transporting belt and a bad image can be reliably prevented, and having a photosensitive drum on the surface of which a toner image is formed, a transfer belt and a driving roller for driving the transfer belt, wherein the toner image formed on the surface of the photosensitive drum is transferred onto the transfer belt or a recording material borne on the transfer belt, an abrasive roller is provided at a position, in contact with a surface on which the driving roller abuts against the transfer belt.
Claims17
An image forming apparatus comprising:
- a photosensitive member;
- a transporting belt;
- driving means for driving said transporting belt or a recording material borne by said transporting belt to a toner image transfer portion between said photosensitive member and said transporting belt;
- and
- abrading means provided at a position in which said abrading means can be brought into contact with a surface of said transporting belt against which said driving means abuts.
A sheet transporting apparatus comprising:
- a transporting belt for transporting a sheet;
- a driving rotary member for driving said transporting belt;
- and
- friction coefficient increasing means for increasing a coefficient of friction of said transporting belt relative to said driving rotary member, wherein said friction coefficient increasing means increases a surface roughness of said transporting belt.
A sheet transporting apparatus comprising:
- a transporting belt that transports a sheet;
- a driving rotary member that drives said transporting belt;
- and
- a friction coefficient increasing portion that increases a coefficient of friction of said transporting belt relative to said driving rotary member,
- wherein said friction coefficient increasing portion increases a surface roughness of said transporting belt.
An image forming apparatus comprising:
- a photosensitive member on a surface of which a toner image is to be formed;
- a belt positioned in contact with said photosensitive member;
- a driving rotary member that drives said belt;
- and
- a friction coefficient increasing portion positioned in contact with a backside of said belt so as to increase a surface roughness of said belt.
Dependencies are inferred from the claim text.