Fixing device using a rotary body and image forming apparatus including the same
AssigneeRicoh Company, Ltd.
InventorsTomoaki Sugawara, Tatsuya Satoh
Life of this patent
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Abstract
A fixing device for an image forming apparatus of the present invention includes a rotary body and a pressing member pressed against each other for conveying a recording medium, carrying a non-fixed toner image thereon, while nipping it therebetween. The rotary member includes an under layer and a surface layer formed of resin. The surface layer has two or more phases including a phase strongly adhering to the under layer and another layer contacting the above phase.
Claims17
A rotary body pressed against a pressing body for conveying a recording medium, carrying a non-fixed toner image formed by a developer, while conveying said recording medium at a nip between said rotary body and said pressing body, said rotary body comprising:
- an under layer;
- and
- a resin surface layer contacting the under layer, the resin layer comprising a plurality of phases of different resin materials, which include a first phase of a first material configured to strongly adhere to said under layer and a second phase of a second material contacting said first phase and having a higher parting ability.
A fixing device comprising:
- a rotary body;
- and
- a pressing body pressed against said rotary body;
- said rotary body and said pressing body conveying a recording medium, carrying a non-fixed toner image formed by a multicolor, multilayer developer or a monochromatic solid developer, while conveying said recording medium at a nip between said rotary body and said pressing body to thereby fix said non-fixed image on said recording medium;
- said rotary body comprising:
- an under layer;
- and
- a resin surface layer comprising a plurality of phases of different resin materials, which include a first phase of a first material configured to strongly adhere to said under layer and a second phase of a second material contacting said phase and having a higher Parting ability.
A fixing method comprising:
- causing a rotary body and a pressing body, which is pressed against said rotary body, to convey a recording medium, carrying a non-fixed toner image formed by a multicolor, multilayer developer or a monochromatic solid developer, while conveying said recording medium at a nip between said rotary body and said pressing body to thereby fix said non-fixed image on said recording medium, said rotary body comprises:
- an under layer;
- and
- a resin surface layer comprising a plurality of phases of different resin materials, which include a first phase of a first material configured to strongly adhere to said under layer and a second phase of a second material contacting said phase and having a higher parting ability.
An image forming apparatus for forming a non-fixed toner image by depositing a developer on a latent image formed on an image carrier, transferring said non-fixed toner image to a recording medium and fixing said non-fixed toner image on said recording medium with a fixing device, said fixing device comprising:
- a rotary body;
- and
- a pressing body pressed against said rotary body;
- said rotary body and said pressing body conveying the recording medium, carrying the non-fixed toner image while conveying said recording medium at a nip between said rotary body and said pressing body;
- wherein said rotary body comprises:
- an under layer;
- and
- a resin surface layer comprising a plurality of phases of different resin materials, which include a first phase of a first material configured to strongly adhere to said under layer and a second phase of a second material contacting said phase and having a higher parting ability.
Dependencies are inferred from the claim text.