Fixing device
First Claim
1. A fixing device for fixing a non-fixed toner image on a sheet by heating and compressing the sheet, the sheet having a surface carrying the non-fixed toner image, the fixing device comprising:
- a first rotator having a heat source therein, said first rotator rotating in a predetermined direction; and
a second rotator that rotates in an opposite direction relative to the direction of rotation of said first rotator while being in contact with said first rotator;
a nip portion formed at a contact point of said first rotator and said second rotator, the sheet with the non-fixed toner image being conveyed to the nip portion with the sheet surface carrying the non-fixed toner image contacting a surface of said first rotator; and
a peeling sheet for peeling the sheet away from the surface of said first rotator after the sheet has passed through said nip portion, the peeling sheet including;
a contact portion for contacting the surface of said first rotator downstream of said nip portion in the direction of rotation of said first rotator; and
a leading edge portion extending upstream of said contact portion in the direction of rotation of said first rotator spaced apart by a predetermined interval from the surface of said first rotator, for peeling the sheet away from the surface of said first rotator.
1 Assignment
0 Petitions
Accused Products
Abstract
A fixing device having a peeling sheet capable of performing stable peeling without causing any damage to the image, the sheet or the fixing roller. The fixing device includes: a fixing roller having an elastic layer formed on its surface; a compression roller in contact with the fixing roller in a nip portion; and a plastic peeling sheet provided downstream of the nip portion, the peeling sheet having an end edge which comes into contact with the surface of the fixing roller to peel the sheet which has passed through the nip portion away from the surface of the fixing roller.
20 Citations
9 Claims
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1. A fixing device for fixing a non-fixed toner image on a sheet by heating and compressing the sheet, the sheet having a surface carrying the non-fixed toner image, the fixing device comprising:
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a first rotator having a heat source therein, said first rotator rotating in a predetermined direction; and a second rotator that rotates in an opposite direction relative to the direction of rotation of said first rotator while being in contact with said first rotator; a nip portion formed at a contact point of said first rotator and said second rotator, the sheet with the non-fixed toner image being conveyed to the nip portion with the sheet surface carrying the non-fixed toner image contacting a surface of said first rotator; and a peeling sheet for peeling the sheet away from the surface of said first rotator after the sheet has passed through said nip portion, the peeling sheet including; a contact portion for contacting the surface of said first rotator downstream of said nip portion in the direction of rotation of said first rotator; and a leading edge portion extending upstream of said contact portion in the direction of rotation of said first rotator spaced apart by a predetermined interval from the surface of said first rotator, for peeling the sheet away from the surface of said first rotator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification