摘要:
An image fixing apparatus includes a heater maintained at a controlled temperature; a film contacted to the heater and movable together with and in sliding contact with a recording material carrying a visualized image, wherein the visualized image is heated by the heater through the film; a temperature detecting element for detecting a temperature of the film or a member contacted to the film; and a controller for changing a level of the controlled temperature on the basis of an output of the temperature detecting element before start of an image fixing operation of the image fixing apparatus.
摘要:
An image fixing apparatus includes a heater; a film movable while being in contact with a recording material carrying a toner image, wherein the toner image is heated by heat from the heater through the film; wherein the film and the recording material are separated when a temperature of the toner image is lower than a maximum temperature provided by the heater and is higher than a glass transition point of the toner.
摘要:
A heating apparatus includes a heater; a film movable in contact with a recording material carrying an image, wherein the image is heated from the heater through the film; the film having an insulative heat resistive resin base layer at a side near the heater and a parting layer containing conductive material at a side near the recording material; a conductive member contacted or close to the base layer of the film; and a potential maintaining device for maintaining substantially the same potential of the parting layer and the conductive member.
摘要:
A heating apparatus includes a heater; a film in slidable contact with the heater and movable together with a recording material carrying an image, such that the image is heated by heat from the heater through the film. The heater is provided with a heat resistive resin layer for sliding contact with the film.
摘要:
A heating apparatus includes a heater which is stationary in use; a film in sliding contact with the heater; a pressing member cooperative with the film to form a nip therebetween; wherein the heater is provided with a portion which is stepped in a direction away from the film toward downstream with respect to a movement direction of the film, the stepped portion being in a width of the nip.
摘要:
An image heating apparatus includes a heater having a heating surface; a base member for supporting said heater, said base member having an edge; a holder for supporting said base member; a film movable with a recording material in sliding contact with the heating surface; wherein said holder has a rounded projection for preventing contact of said film with the edge.
摘要:
An image fixing apparatus includes a heater which is stationary during an image fixing operation, a linear heat generating layer and a film movable in sliding contact with the heater in which a toner image on a recording material is heated by heat from the heater through the film. The heater produces amounts of heat which are different in a direction transverse to a direction of movement of the recording material by varying the resistance distribution of the linear heat generating layer.
摘要:
An image fixing apparatus includes a heater which is fixed during an image fixing operation, a film for sliding movement of the heater, wherein a toner image on a recording material is heated by heat from the heater through the film, detecting means for detecting non-movement of the film, and power supply stopping means for stopping energization of the heater in response to an output of the detecting means.
摘要:
A fixing device includes a heating element fixedly supported during a fixing procedure, a film, apparatus enabling the film to slide against the heating element, and a pressurizing roller for pressing a recording material on which a toner image is supported against the film. The heating element has a substrate, a heat generating layer provided on the substrate, and a heat-melting portion provided on the substrate. The heat-melting portion melts at a temperature higher than the fixing temperature and lower than the withstanding temperature of the substrate and thereby disconnects the heat generating layer from its power source.
摘要:
A heating apparatus for heating a visualized image on a recording material includes a stationary heater; a film in sliding contact with the heater, wherein the recording material has a visualized image which is heated through the film by heat from the heater; wherein the film comprises plural layers each having a volume resistivity of not more than 10.sup.11 ohm.cm; and a device for maintaining a potential of one of the layers contactable with the film substantially at a predetermined level.