摘要:
An image transferring device of the present invention includes a first and a second intermediate image transfer body whose surfaces endlessly move while forming a nip in contact with each other. When a sheet nipped by the nip is being conveyed toward a side downstream of the nip in the direction in which the above surfaces move, a first toner image transferred from an image carrier to the second intermediate image transfer body via the first intermediate image transfer body beforehand is transferred to one side of the sheet. At the same time, a second toner image transferred from the image carrier to the first image transfer body beforehand is transferred to the other side of the sheet. One of the two intermediate image transfer bodies is less deformable than the other intermediate image transfer body in the direction of thickness.
摘要:
A method of fixing a toner image on a support, which includes the steps of heating a toner image formed on a support by use of a toner to the softening point or melting point of the toner or above, using an image fixing member, the toner comprising 100 parts by weight of a resin and at least 0.05 parts by weight of a wax component, the toner having a melt viscosity of 10 to 1013 centipoise, allowing the toner image to cool or cooling the toner image, and peeling the support which bears the toner image thereon away from the image fixing member when the temperature of the toner image has reached a temperature below the softening point or melting point of the toner, and an image fixing apparatus for carrying out this method is proposed.
摘要:
A toner for use in electrophotography, which includes a coloring agent and a binder including a binder resin which contains therein a cyclized rubber, is proposed, and an image formation method using this toner is also proposed.
摘要:
A toner contains a coloring agent and a binder including a wax and an ethyl cyclic oligosaccharide, which has D-glucose units linked together by a linkage of 1,4-glycosidic bond with an &agr; configuration, with at least one alcohol hydroxyl group in each D-glucose unit being ethyl-etherified. A one-component developer for electrophotography is prepared using the toner, and a two-component developer is prepared by the combination of the toner and a carrier.
摘要:
A fuser device includes a fusing member including an elastic layer on a surface side thereof and a cylindrical curved surface portion having a predetermined diameter, a heating member including a cylindrical curved surface portion having a predetermined diameter, the heating member having contact with the fusing member and heating the fusing member, and a pressure member including an elastic layer on a surface side thereof and a cylindrical curved surface portion having a predetermined diameter, the pressure member pressing the fusing member.
摘要:
An image forming method of the present invention begins with a first image transfer step for thermally transferring a first toner image from a first image carrier to a second image carrier contacting it. Subsequently, in a second image transfer step, the first toner image carried on the second image carrier and a second toner image newly formed on the first image carrier are thermally transferred to opposite sides of a recording medium substantially at the same time. Higher image transfer temperature is assigned to the second image transfer step than to the first image transfer step. Additionally, the second image carrier has a greater roughness than the first image carrier.
摘要:
An image forming apparatus of the present invention includes a first and a second intermediate image transfer belt contacting each other to form a nip for secondary image transfer. While the nip is heated, a sheet is passed through the nip to thereby transfer toner images respectively formed on the first and second belts to opposite surfaces of the sheet at the same time. The nip is sized such that image transfer and fixation can be effected at temperature higher than the melting point or the softening point of toner by 5° C. to 50° C.
摘要:
The present invention is directed to an image-fixing member which has excellent heat-resistance, wear resistance, and mold releasability and which performs heating or pressurizing for fixing an image on a recording medium. The preset invention also provides an image-fixing apparatus and image-forming apparatus using the image-fixing member. The image-fixing member of the present invention has a surface layer formed from a heat-resistant resin a nitrogen-containing heat-resistant principal chain segment and a side chain segment having a polysiloxane structure. The heat-resistant resin can also be contained in other portion than the surface layer.
摘要:
A fixing apparatus includes a beater, an endless belt, a pressure roller, and a heater controller. The heater has a line shape orthogonal to a direction in which a recording sheet carrying an unfixed toner image formed with toner in accordance with image information is transferred. The endless belt is rotated with an inner surface thereof sliding over a surface of the heater. The pressure roller is arranged at a position opposite to the heater relative to the endless belt and is held for rotation in contact with the endless belt under pressure to form a nip therebetween. The heater controller energizes the heater in accordance with the image information.
摘要:
An image fixing apparatus includes a fixing member and a pair of pressure applying members. The fixing member transfers and applies heat to a recording sheet including a toner image. The pressure applying members are mounted opposite to the fixing member relative to the recording sheet and apply pressure to the recording sheet from a back side thereof. The fixing member applies heat to the toner until the temperature becomes a state higher than one of softening and melting points. The heat is removed and the melted toner cools to a temperature below one of the softening and melting points. The fixing member has a thickness of S micrometers within a range of from approximately 1.0 &mgr;m to approximately 300 &mgr;m, and a tension within a range of one of from approximately ((S+99)/50000×9.8 100 N/m to approximately ((29S+371)×3/50000)×9.8×100 N/m and from approximately ((S+99/40000)×9.8×100 N/m to approximately ((29S+371)×3/40000)×9.8×100 N/m.