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US 8,285,170 B2Granted
Image heating apparatus and image forming apparatus with curl correcting mechanism
AssigneeCanon Kabushiki Kaisha
InventorKazuhisa Okuda
Life of this patent
Estimating the term…
Abstract
An image heating apparatus includes a rotatable belt to be heated, a pressure roller for pressure-contacting the rotatable belt so as to constitute a pressure contact portion in which a recording sheet is nipped and conveyed so that an image on the recording sheet is heated, and a roller provided for pressing an outer circumferential surface of the rotatable belt inward on a downstream in a sheet conveying direction of the pressure contact portion.
Claims12
An image heating apparatus, comprising:
- a rotatable belt to be heated;
- a pressure member for pressure-contacting the rotatable belt so as to constitute a pressure contact portion, wherein the pressure contact portion nips and conveys a recording sheet so that an image on the recording sheet is heated, and the recording sheet is conveyed while an image side of the recording sheet contacts the rotatable belt;
- a cooling portion provided downstream of the pressure member configured to cool the recording sheet heated by the pressure member;
- a pressing member provided downstream of the cooling portion in a sheet conveying direction for pressing an outer circumferential surface of the rotatable belt inward, wherein the pressing member is supported to be able to reciprocate in a pressing direction of the pressing member;
- and
- a drive cam disposed to enable the pressing member to change a position in the pressing direction for pressing the rotatable belt so that a contact angle with respect to the rotatable belt can be changed.
3 more elements
An image heating apparatus, comprising:
- a rotatable belt to be heated;
- a pressure member for pressure-contacting the rotatable belt so as to constitute a pressure contact portion, wherein the pressure contact portion nips and conveys a recording sheet so that an image on the recording sheet is heated, and the recording sheet is conveyed while an image side of the recording sheet contacts the rotatable belt;
- a cooling portion provided downstream of the pressure member configured to cool the recording sheet heated by the pressure member;
- and
- a pressing member provided downstream of the cooling portion in a sheet conveying direction for pressing an outer circumferential surface of the rotatable belt inward, wherein the pressing member is supported to be able to reciprocate in a pressing direction of the pressing member;
- and
- a second pressing member upstream of the pressing member for pressing an inner circumferential surface of the rotatable belt outward.
4 more elements
Dependencies are inferred from the claim text.