Image forming apparatus
AssigneeKonica Minolta Business Technologies, Inc.
InventorHidetoshi Katayanagi
Life of this patent
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Abstract
An image forming apparatus includes: a heating unit; a pressure roller; a separation roller whose diameter is smaller than the pressure roller's one; a belt which connects the pressure roller and the separation roller to form a pressure unit, wherein the pressure roller presses the heating unit through the belt to fix a toner image on a sheet of paper passing through a nip between the heating unit and the pressure unit, wherein the separation roller is located such that a direction of the belt from the pressure roller to the separation roller coincides with a tangent to an imaginary circle which the pressure roller forms at the nip or is on a pressure roller side with respect to the tangent.
Claims19
An image forming apparatus comprising:
- a heating unit;
- a pressure roller;
- a separation roller whose diameter is smaller than the pressure roller's one;
- a belt which connects the pressure roller and the separation roller to form a pressure unit, wherein the pressure roller presses the heating unit through the belt to fix a toner image on a sheet of paper passing through a nip between the heating unit and the pressure unit,
- wherein the separation roller is located such that a direction of the belt from the pressure roller to the separation roller coincides with a tangent to an imaginary circle which the pressure roller forms at the nip or is on a pressure roller side with respect to the tangent.
An image forming apparatus comprising:
- a heating unit;
- a pressure roller;
- a separation roller whose diameter is smaller than the pressure roller's one;
- a belt which connects the pressure roller and the separation roller to form a pressure unit, wherein the pressure roller presses the heating unit through the belt to fix a toner image on a sheet of paper passing through a nip between the heating unit and the pressure unit,
- wherein the separation roller is located such that a direction of the belt from the pressure roller to the separation roller is on a pressure roller side with respect to an imaginary line formed by connecting an inlet and an outlet of the nip.
An image forming apparatus comprising:
- a heating unit;
- a pressure roller;
- a separation roller whose diameter is smaller than the pressure roller's one;
- a belt which connects the pressure roller and the separation roller to form a pressure unit, wherein the pressure roller presses the heating unit through the belt to fix a toner image on a sheet of paper passing through a nip between the heating unit and the pressure unit,
- wherein the separation roller is located such that a direction of the belt from the pressure roller to the separation roller is on a pressure roller side with respect to a progression direction of a sheet of tough paper immediately after the paper passes the nip.
Dependencies are inferred from the claim text.