Abstract: Provided is a fixing apparatus for fixing a toner image on a recording material while conveying the recording material on which the toner image has been formed at a nip portion that includes a roller, a heating unit configured to heat the roller from outside the roller, the heating unit receiving power supplied from a power supply, a backup unit forming the nip portion with the roller, and a power shutdown member configured to operate in response to an abnormal temperature of the backup unit and shut down power supply to the heating unit.

Abstract: A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.

Abstract: An image forming apparatus includes pair of ejection rollers that are used for ejecting a recording material to a stacking unit from a main body of the image forming apparatus and a cooling unit. The cooling unit includes, air-blowing ports that are used for blowing air onto the recording material in a direction crossing a transport direction of the recording material are positioned in a region that is located above the position of a nip portion of the pair of ejection rollers and below an extension line tangent to the nip portion of the pair of ejection rollers.

Abstract: Provided is a fixing apparatus for fixing a toner image on a recording material while conveying the recording material on which the toner image has been formed at a nip portion that includes a roller, a heating unit configured to heat the roller from outside the roller, the heating unit receiving power supplied from a power supply, a backup unit forming the nip portion with the roller, and a power shutdown member configured to operate in response to an abnormal temperature of the backup unit and shut down power supply to the heating unit.

Abstract: A fixing apparatus includes a roller, a heating rotation member configured to form a pressure portion by coming into contact with the roller, the heating rotation member being rotated by rotation of the roller, and a pressing rotation member configured to form a nip portion by coming into contact with the roller, the pressing rotation member being rotated by the rotation of the roller, wherein micro-hardness of a surface of the heating rotation member at the pressure portion and micro-hardness of a surface of the pressing rotation member at the nip portion are both higher than micro-hardness of a surface of the roller, and wherein frictional force acting on the roller at the pressure portion is larger than frictional force acting on the roller at the nip portion.

Abstract: An image forming apparatus for forming a toner image on a recording material, the apparatus includes a cylindrical film; a plate-like nip forming member contacted with an inner surface of the film, the nip forming member including a base member and a coating layer on the base member, the coating layer having a thermal expansion coefficient smaller than that of the base member; and a roller cooperative with the nip forming member to form a nip, wherein the coating layer is provided on a first surface of the nip forming member which is opposed to the film and on a second surface opposite from the first surface except for an outer edge portion of the nip forming member.

Abstract: A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.

Abstract: An image forming apparatus includes a fixing unit including a roller, a heating rotary member heating the roller, and a backup member forming a nip portion, a temperature detection unit detecting a temperature of the heating rotary member, and a control unit for controlling power so that the detected temperature is maintained at a target temperature, wherein a print job includes a first step in which the unfixed toner image is formed on the recording material, a second step in which fixing processing is executed, and a third step in which the fixing unit is cleaned, and wherein the third step is executed following the second step, and in the third step, while the target temperature is set higher than the target temperature in the second step, the roller and the heating rotary member are rotated in a state where no recording material is present at the nip portion.

Abstract: A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.

Abstract: A fixing apparatus that heats, at a nip portion, a recording material, bearing a toner image, while conveying the recording material to fix the toner image thereto, includes a roller, a heating unit configured to contact the roller to form a heating portion with the roller, and heat the roller via the heating portion, wherein the heating unit includes a film, and a heating portion forming member configured to contact an inner surface of the film and form the heating portion with the roller via the film, and a backup member configured to contact the roller and form the nip portion with the roller. A micro hardness of a surface of the roller is lower than that of the film at the heating portion, and in at least a partial region of the heating portion, a velocity difference is provided between the surfaces of the roller and the film.

Abstract: A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.

Abstract: A fixing apparatus that heats, at a nip portion, a recording material, bearing a toner image, while conveying the recording material to fix the toner image thereto, includes a roller, a heating unit configured to contact the roller to form a heating portion with the roller, and heat the roller via the heating portion, wherein the heating unit includes a film, and a heating portion forming member configured to contact an inner surface of the film and form the heating portion with the roller via the film, and a backup member configured to contact the roller and form the nip portion with the roller. A micro hardness of a surface of the roller is lower than that of the film at the heating portion, and in at least a partial region of the heating portion, a velocity difference is provided between the surfaces of the roller and the film.

Abstract: A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.

Abstract: A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.

Abstract: The present invention is directed to suppressing cracks in the surface layer of the rotating member including fluororesin. According to the present invention, there is provided a heating apparatus comprising: a rotating member which has a surface layer comprising fluororesin, flexibility, and is open at both ends thereof; a heating member for heating the rotating member; a holding member for the rotating member, which is disposed inside the rotating member and has a sliding surface against an inner peripheral surface of the rotating member; and a pressurizing member for forming a nip portion together with the rotating member, the heating apparatus heating a recording material while conveying the recording material by nipping at the nip portion and rotating the rotating member and the pressurizing member, wherein a lubricant comprising a straight-chain and a side-chain type perfluoropolyethers is interposed between the rotating member and the sliding surface of the holding member.

Abstract: The present invention is directed to suppressing cracks in the surface layer of the rotating member including fluororesin. According to the present invention, there is provided a heating apparatus comprising: a rotating member which has a surface layer comprising fluororesin, flexibility, and is open at both ends thereof; a heating member for heating the rotating member; a holding member for the rotating member, which is disposed inside the rotating member and has a sliding surface against an inner peripheral surface of the rotating member; and a pressurizing member for forming a nip portion together with the rotating member, the heating apparatus heating a recording material while conveying the recording material by nipping at the nip portion and rotating the rotating member and the pressurizing member, wherein a lubricant comprising a straight-chain and a side-chain type perfluoropolyethers is interposed between the rotating member and the sliding surface of the holding member.

Abstract: A manufacturing method of a resin container includes continuously supplying a base material resin forming a container body from a main extruder, discharging from a discharge portion provided in a die head a sub-material supplied from a sub-extruder so that the sub-material joins the base material resin, extruding a parison from a slit portion opened on an end side of the die head, and blow-molding the parison, thereby forming a coating layer which covers the whole or a part of the container body by using the sub-material. A thickness reducing portion in which a thickness is continuously reduced is formed in the coating layer while adjusting a resin pressure in a supply path of the sub-material fed from the sub-extruder by performing suck-back control which pulls back the sub-material from the discharge portion at an arbitrary timing when joining the sub-material with the base material resin.

Abstract: A manufacturing apparatus of a resin container includes a main extruder which supplies a base material resin, and a sub-extruder which supplies a sub-material. The sub-material supplied from the sub-extruder is discharged from a discharge portion provided in a die head so that the sub-material joins the base material resin continuously supplied from the main extruder. A parison is then extruded from a slit portion opened on an end side of the die head, and subjected to blow molding, thereby forming a coating layer which covers the whole or a part of a container body formed of the base material resin by using the sub-material. A suck-back mechanism which pulls back the sub-material from the discharge portion is provided between the sub-extruder and the die head, and the discharge portion is provided in the vicinity of the slit portion in-the die head.

Abstract: Disclosed is an image heating apparatus. The image heating apparatus includes a rotatable heating member for heating an image on a recording material in a nip portion, and a heating unit for heating the heating member from the outside thereof. With this structure, a warm-up time period or a first print-out time period can be reduced, and low power consumption can be accomplished. Further, satisfactory image quality can be realized with no heating (fixing) irregularity. The heating member has a low thermal conductive elastic layer, and a heat storage layer outside the low thermal conductive elastic layer to have a volume heat capacity larger than the low thermal conductive elastic layer. A heat capacity of the heat storage layer per unit surface area of a fixing member is in a range of 100 J/m2K to 600 J/m2K.

Abstract: A manufacturing apparatus of a resin container includes a main extruder which supplies a base material resin, and a sub-extruder which supplies a sub-material. The sub-material supplied from the sub-extruder is discharged from a discharge portion provided in a die head so that the sub-material joins the base material resin continuously supplied from the main extruder. A parison is then extruded from a slit portion opened on an end side of the die head, and subjected to blow molding, thereby forming a coating layer which covers the whole or a part of a container body formed of the base material resin by using the sub-material. A suck-back mechanism which pulls back the sub-material from the discharge portion is provided between the sub-extruder and the die head, and the discharge portion is provided in the vicinity of the slit portion in-the die head.