Image-formation apparatus, controlling method thereof and image-formation method
AssigneeRicoh Company, Ltd.
InventorHiroshi Koide
Life of this patent
Estimating the term…
Abstract
An image formation apparatus including at least one rotary member pressed onto the belt directly or indirectly and allowed to integrally rotate with the shift of the belt, a belt driving unit which moves the belt, or a rotary member driving unit which rotates the rotary member, and at least one of rotary member load correction unit for correcting variations in the load imposed on the rotary member and belt load correction unit for correcting variations in the load imposed on the belt.
Claims38
An image formation apparatus comprising:
- at least one rotary member that is pressed onto the belt directly or indirectly and allowed to integrally rotate with the shift of the belt;
- a belt driving unit which moves the belt, or a rotary member driving unit which rotates the rotary member;
- and
- at least one of rotary member load correction unit for correcting variations in the load imposed on the rotary member and belt load correction unit for correcting variations in the load imposed on the belt.
An image formation apparatus, wherein material for preventing slipping between a photosensitive drum and a belt, between the photosensitive drum and a sheet of paper, or between the sheet of paper and the conveyor belt and material for solving a problem with variations in density of an image are utilized in a shared manner.
An image formation apparatus, which has at least one rotary member that is pressed onto a belt directly or indirectly and allowed to rotate following the shift of the belt and a driving roller for driving the belt, the image formation apparatus comprising:
- a driving-roller drive unit which drives the driving roller;
- a rotary-member driving unit which drives the rotary member;
- a load variation detection unit which detects load variations in the belt;
- and
- a control unit which controls the operation of the driving-roller drive unit or the rotary-member driving unit in accordance with variations in the load of the belt.
An image formation apparatus comprising:
- at least a rotary member that rotates while being pressed onto the belt directly or indirectly;
- and
- a velocity detection unit which detects at least one of the shifting velocity of the belt and the velocity related to the rotary member, and a control unit,
- wherein, in the system having the velocity detection unit and the control unit, a velocity setting unit which sets the shifting velocity of the belt and the rotation velocity of the rotary member to velocities that allow the belt and the rotary member to move integrally is further installed.
A control method for an image formation apparatus, which is a control method for an image formation apparatus having at least one rotary member that is pressed onto the belt directly or indirectly and allowed to integrally rotate with the shift of the belt;
- and a belt driving unit which moves the belt, or a rotary member driving unit which rotates the rotary member, the control method comprising:
- at least one of a rotary member load correction step of correcting variations in the load imposed on the rotary member such as the photosensitive drum and a belt load correction step of correcting variations in the load imposed on the belt.
An image formation method, which is an image formation method applied to an image formation apparatus having at least one rotary member that is pressed onto a belt directly or indirectly and allowed to rotate following the shift of the belt and a driving roller for driving the belt, the image formation method comprising:
- a driving-roller driving step for driving the driving roller;
- a rotary-member driving step for driving the rotary member;
- a load variation detection step which detects load variations in the belt;
- and
- a control step for controlling the operation of the driving roller or the rotary member in accordance with variations in the load of the belt.
An image formation method, which is an image formation method for controlling at least a rotary member that rotates while being pressed onto the belt directly or indirectly, the image formation method comprising:
- a velocity detection step which detects at least one of the shifting velocity of the belt and the velocity related to the rotary member, and a control step;
- wherein in the system having the velocity detection step and the control step, a velocity setting step for setting the shifting velocity of the belt and the rotation velocity of the rotary member to velocities that allow the belt and the rotary member to move integrally is further provided.
Dependencies are inferred from the claim text.