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AssigneeCanon Kabushiki Kaisha
InventorsMasahito Omata, Shoichiro Ikegami, Masahiko Suzumi, Terutaka Endo, Takeshi Niimura, Takehiko Suzuki, Toshihiko Ochiai
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The fixing device includes a rotary member for contacting the unfixed toner image, a pressure member for forming the nip portion by contacting the rotary member, and a cover for covering the rotary member with a space between the rotary member and the cover, wherein in a cross section of the fixing device, the cross section being orthogonal to a generatrix direction of the rotary member, wherein a shortest distance (H) between the nip portion and a farthest surface portion of the rotary member farthest away from a surface portion forming the nip portion of the rotary member, a maximum width (W) of the rotary member in the conveyance direction of the recording member, and an area (S) of the space in a range of the maximum width W in the cross section satisfy with a relationship of S/W≧0.7×H.
A fixing device for fixing an unfixed toner image on a recording material while conveying and heating the recording material bearing the unfixed toner image at a nip portion, the fixing device comprising:
A fixing device for fixing an unfixed toner image on a recording material while conveying and heating the recording material bearing the unfixed toner image at a nip portion, the fixing device comprising:
Dependencies are inferred from the claim text.