KR910014775A - Variable set temperature image fixing device - Google Patents

Abstract

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Description

Variable set temperature image fixing device

As this is a public information case, the full text was not included.

1 is a cross-sectional view of an image fixing device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of an image fixing device according to another embodiment of the present invention, and FIG. 3 is an enlarged cross-sectional view of a temperature detector for fixing film temperature detection.

Claims (12)

An image fixing apparatus comprising: a heater maintained at a controlled temperature; A film heated by a heater through the film, the film being in contact with the heater and in sliding contact with the recording material accompanying the image; A temperature detecting element for detecting a temperature of the film or a member in contact with the film; And control means for changing the level of the control temperature on the basis of the output of the temperature detection element before starting the image fixing operation of the image fixing apparatus. The image fixing apparatus according to claim 1, wherein the temperature detecting element detects the temperature of the heater, and during the fixing operation, the control means controls the power supply to the heater to provide a temperature level of the heater. Device. An image fixing apparatus according to claim 1, wherein said set temperature is determined by said control means before the start of power supply to said heater. The image fixing apparatus according to claim 1, wherein the temperature detecting element detects a temperature of one surface of the film that is in contact with the image. The image fixing apparatus according to claim 1, wherein the temperature detecting element detects a temperature of a member in contact with one surface of the film in a direction opposite to the other surface of the film capable of contacting the image. The image fixing apparatus according to claim 1, wherein the heater is fixed during the fixing operation and the film is in sliding contact with the heater. 7. The heater according to claim 6, wherein the heater is composed of a heat generating resistive layer on the film side of the base plate which generates heat by the base plate and a power source, and heat from the heat generating resistive layer is imaged without an air layer therebetween. Image fixing apparatus characterized in that the transfer. The image fixing apparatus according to claim 1, wherein the image is composed of toner of powder, and the recording material is separated from the film while the temperature of the toner is higher than the glass transition point of the toner. The image fixing apparatus according to claim 1, wherein the film is formed of a continuous belt. 8. The apparatus of claim 7, wherein the thickness of the film is no greater than 100 microns. 11. An apparatus according to claim 10, wherein the film has a thickness no greater than 40 microns. An image fixing apparatus comprising: a heater maintained at a controlled temperature; A film heated by a heater through the film, the film being in contact with the heater and in sliding contact with the recording material accompanying the image; A temperature detecting element for detecting a temperature of the film or a member in contact with the film; And control means for changing a power source to the heater based on an output of the temperature detecting element before starting the image fixing operation of the image fixing apparatus. ※ Note: The disclosure is based on the initial application.