Image forming apparatus for preventing damage to conductive fibers on a charging member
AssigneeSharp Kabushiki Kaisha
InventorsKatsumi Adachi, Takashi Hayakawa
Life of this patent
Estimating the term…
Abstract
In an image forming apparatus including a charging element, a charged element, a developing element, and a cleaning element the dimensions of those elements satisfy either or both of the following relations: C+D<A<B-D C<E<A+D where A denotes a longitudinal dimension of the charging element; B denotes an effective longitudinal width of a photoconductive layer coated range on the charged element; C denotes a developing width in the longitudinal direction of a developing element; D denotes a vibrating width of the charging member; and E denotes a longitudinal dimension of a cleaning element for the charged element.
Claims6
An image forming apparatus comprising:
- a charged member at least a portion of which is coated with a photoconductive layer rotated in a rotating direction by a rotating means;
- a charging member including conductive fibers and placed in contact or nearly in contact with said charged member;
- means for vibrating said charging member perpendicularly to said rotating direction of said charged member, wherein a voltage is applied between said charging member and said charged member so as to charge said charged member;
- and
- a developing unit,
- wherein said charged member, charging member, and developing unit satisfy the following relation:
- C+D<A<B-D, where A denotes a longitudinal dimension of said charging member;
- B denotes a length of the photoconductive layer;
- C denotes a developing width in the longitudinal direction of the developing unit;
- D denotes a vibrating width of said charging member.
An image forming apparatus comprising:
- a charged member at least a portion of which is coated with a photoconductive layer rotated in a rotating direction by a rotating means;
- a charging member including conductive fibers and placed in contact or nearly in contact with said charged member;
- means for vibrating said charging member perpendicularly to said rotating direction of said charged member, wherein a voltage is applied between said charging member and said charged member so as to charge said charged member;
- a developing unit;
- and
- a cleaning unit for cleaning said charged member,
- wherein said charged member, charging member, developing unit, and cleaning unit satisfy the following relation:
- C<E<A+D where A denotes a longitudinal dimension of said charging member;
- C denotes a developing width in the longitudinal direction of said developing unit;
- D denotes a vibrating width of said charging member;
- and E denotes a longitudinal dimension of a cleaning member.
Dependencies are inferred from the claim text.