Sheet conveyor and image formation device with shaped belt platen
AssigneeCanon Kabushiki Kaisha
InventorTadashi Matsumoto
Life of this patent
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Abstract
A sheet conveyor includes a conveyor belt that conveys a sheet material while holding the sheet material by attraction with an electric force, and a platen that slidably supports a bottom surface of the conveyor belt so as to maintain flatness of a predetermined region of the conveyor belt. In response to the electric force, an attractive force for attracting the conveyor belt to the platen is generated. The platen is shaped such that a surface of the platen that is in contact with the conveyor belt has a width that increases gradually from an upstream side of the platen towards a downstream side thereof in a conveying direction of the conveyor belt.
Claims13
A sheet conveyor comprising:
- a conveyor belt that conveys a sheet material while holding the sheet material by attraction with an electric force;
- and
- a platen slidably supporting a bottom surface of the conveyor belt so as to maintain flatness of a predetermined region of the conveyor belt,
- wherein the upstream side of the platen is inclined at a non-zero predetermined angle with respect to a direction perpendicular to a conveying direction of the conveyor belt such that a surface of the platen that is in contact with the conveyor belt has a width that increases gradually from an upstream side of the platen towards a downstream side thereof in a conveying direction of the conveyor belt.
A sheet conveyor comprising:
- a conveyor belt that conveys a sheet material while holding the sheet material by electrostatic attraction;
- and
- a guide member that supports the conveyor belt by being in contact with a surface of the conveyor belt opposite to a surface thereof that holds the sheet material by electrostatic attraction,
- wherein an upstream side of the guide member is inclined at a non-zero predetermined angle with respect to a direction perpendicular to a conveying direction of the conveyor belt such that a surface of the guide member that is in contact with the conveyor belt has a surface area per unit length in the conveying direction that becomes greater in a downstream direction.
Dependencies are inferred from the claim text.