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US 7,925,198 B2Granted
Fixing device and image forming apparatus
AssigneeKonica Minolta Business Technologies, Inc.
InventorEtsuaki Urano
Life of this patent
Estimating the term…
Abstract
A fixing device has a fixing roller, a pressure roller, an electromagnetic-induction heating section, and a heat pipe. The pressure roller has a metal layer, so that heat transferred directly from the fixing roller to the pressure roller is thermally transported by the metal layer of the pressure roller, whereby temperature of the pressure roller in its axial direction can be equalized.
Claims16
A fixing device comprising:
- a fixing-side rotating member and a pressing-side rotating member which are in contact with each other to fix toner on a recording material while conveying the recording material;
- and
- a heating section for heating the fixing-side rotating member,
- wherein the pressing-side rotating member has at least:
- a core metal;
- a heat-conducting metal layer provided radially outside the core metal;
- an elastic layer between the core metal and the heat conducting metal layer;
- and
- a mold releasing layer on its radially outermost side, and the heat-conducting metal layer is contiguous to the mold releasing layer.
6 more elements
A fixing device comprising:
- a fixing-side rotating member and a pressing-side rotating member which are in contact with each other to fix toner on a recording material while conveying the recording material;
- and
- a heating section for heating the fixing-side rotating member,
- wherein the pressing-side rotating member includes at least:
- a core metal,
- a low thermal-conduction elastic layer,
- a heat-conducting metal layer;
- a high thermal-conduction elastic layer;
- and
- a mold releasing layer in this order from radially inside to outside and wherein the high thermal-conduction elastic layer is larger in thermal conductivity than the low thermal conduction elastic layer.
7 more elements
Dependencies are inferred from the claim text.