Image forming apparatus with a brush roller that rotates and reciprocates
AssigneeKyocera Mita Corporation
InventorsShinki Miyaji, Yoshihiko Maruyama, Koji Shin
Life of this patent
Estimating the term…
Abstract
An image forming apparatus is provided with a rotary image bearing member; a charging roller for charging the outer circumferential surface of the image bearing member by rotating in contact with the image bearing member; a brush roller for cleaning adhered matters on the outer circumferential surface of the charging roller by being held in contact with the charging roller due to its own weight and rotating; a driving mechanism for drivingly rotating the brush roller to have a linear velocity difference to the charging roller; and a moving mechanism for reciprocating the brush roller along the longitudinal direction thereof.
Claims20
An image forming apparatus, comprising:
- a rotary image bearing member;
- a charging roller for charging the outer circumferential surface of the image bearing member by rotating in contact with the image bearing member;
- a brush roller for cleaning adhered matters on the outer circumferential surface of the charging roller by being held in contact with the charging roller due to its own weight and rotating;
- a driving mechanism for drivingly rotating the brush roller to have a linear velocity difference to the charging roller;
- and
- a moving mechanism for reciprocating the brush roller along the longitudinal direction thereof, wherein
- the driving mechanism includes:
- a first gear concentrically mounted on one end of the brush roller, and
- a second gear synchronously rotatable with the charging roller, engageable with the first gear and having a different number of teeth than the first gear.
An image forming apparatus, comprising:
- a rotary image bearing member;
- a charging roller for charging the outer circumferential surface of the image bearing member by rotating in contact with the image bearing member;
- a brush roller for cleaning adhered matters on the outer circumferential surface of the charging roller by being held in contact with the charging roller due to its own weight and rotating;
- a driving mechanism for drivingly rotating the brush roller to have a linear velocity difference to the charging roller;
- and
- a moving mechanism for reciprocating the brush roller along the longitudinal direction thereof, wherein
- the moving mechanism includes
- a disk cam provided at one end of the brush roller and inclined with respect to a longitudinal direction,
- a casing member having holding projections for holding a part of the outer periphery of the disk cam from opposite sides along longitudinal direction, and
- a supporting member for supporting the casing member in such a manner as not to permit a movement of the casing member along longitudinal direction.
An image forming apparatus, comprising:
- a rotary image bearing member;
- a charging roller for charging the outer circumferential surface of the image bearing member by rotating in contact with the image bearing member;
- a brush roller for cleaning adhered matters on the outer circumferential surface of the charging roller by being held in contact with the charging roller due to its own weight and rotating;
- a driving mechanism for drivingly rotating the brush roller to have a linear velocity difference to the charging roller;
- and
- a moving mechanism for reciprocating the brush roller along the longitudinal direction thereof, wherein
- the fineness of bristles of the brush roller and the density thereof are preferably set within a range of 1 to 10 T (decitex) and within a range of 150 to 300 kF/inch2, respectively.
Dependencies are inferred from the claim text.