摘要:
In a fixing device incorporated in an image forming apparatus and operable to fix a toner image on a recording medium, a first rotative member and a second rotative member form a nip portion therebetween, at which the toner image is fixed on the recording medium. A separator separates the recording medium, which has been passed through the nip portion, from one of the first rotative member and the second rotative member. The separator is provided with a first guide face extending in a first direction to guide the separated recording medium to an inlet of a subsequent stage of the image forming apparatus. The first guide face is provided with a rib extending in the first direction.
摘要:
In a fixing device incorporated in an image forming apparatus and operable to fix a toner image on a recording medium, a first rotative member and a second rotative member form a nip portion therebetween, at which the toner image is fixed on the recording medium. A separator separates the recording medium, which has been passed through the nip portion, from one of the first rotative member and the second rotative member. The separator is provided with a first guide face extending in a first direction to guide the separated recording medium to an inlet of a subsequent stage of the image forming apparatus. The first guide face is provided with a rib extending in the first direction.
摘要:
A fixing apparatus, includes a fixing roller which has a middle portion and both end portions in an axis direction thereof, a pressing roller which is brought into press contact with the fixing roller for rotating so that a press contact portion is formed, an exfoliating member which exfoliates a sheet-like record medium from a surface of the fixing roller after the record medium is passed through the press contact portion, and restricting members which is provided at both end portions of the exfoliating member, and is brought into contact with the surface of the fixing roller so that an interval between the surface of the fixing roller and the exfoliating member is restricted. The middle portion of the fixing roller is smaller than the both end portions of the fixing roller in a diameter. The restricting members are brought into contact with first portions of the fixing roller other than second portions of the fixing roller in which end edge portions of the pressing roller are brought into contact with the fixing roller.
摘要:
A fixing device includes a pressure application roller 120 pressed against a fixing belt 110 (or fixing roller) to be heated. One of the them is driven while the other follows the one in rotation. A recording medium S having a toner image thereon is moved to pass through a central part N1 of a press contact portion N, whereby the toner image is fused and fixed on the recording medium. High grip portions G are provided on both side ends of the fixing belt or the pressure application roller.
摘要:
A fixing device includes a pressure application roller 120 pressed against a fixing belt 110 (or fixing roller) to be heated. One of the them is driven while the other follows the one in rotation. A recording medium S having a toner image thereon is moved to pass through a central part N1 of a press contact portion N, whereby the toner image is fused and fixed on the recording medium. High grip portions G are provided on both side ends of the fixing belt or the pressure application roller.
摘要:
A fluid ejecting device includes a transporting member for transporting a medium in a transporting direction, a fluid ejecting head for ejecting fluid containing a color material onto the medium, an irradiating unit provided on the downstream side of the fluid ejecting head in the transporting direction to cure the fluid by irradiating the fluid on the medium with ultraviolet rays, and a charge applying member for applying charges to the color material of the fluid on the medium before irradiation of the fluid with the ultraviolet rays.
摘要:
An image forming apparatus which is able to form either single or double sided copies on a recording medium while achieving an excellent image quality in either a matted or glossy finish. The image forming apparatus includes a fixing portion in which a first roller includes a first temperature and hardness for forming a matted image, whereas a second roller includes a higher temperature and hardness for forming a glossy image. Alternatively, or in addition, to different hardness and temperatures, the recording medium can be conveyed at a first speed to form a matted image, and a slower speed to form a glossy image. The image forming apparatus further includes an inverse and re-fixing sub-mode, which utilizes an inverting and returning passage, for reducing the curl in a recording medium, and thus also reducing the instances in which clogging takes place. The inverting and returning passage has a length sufficient to accommodate a plurality of recording mediums. Moreover, the image forming apparatus is provided with first and second discharge passages so that if one passage is clogged, the other can be used to discharge recording mediums. A switching means selects, based on detection sensors, through which discharge passage a recording medium is fed. The operations of the image forming apparatus are coordinated by a control unit.
摘要:
A recording medium having a toner image formed thereon is moved to pass through a press contact portion between an endless belt being heated and an pressure roller pressed against the endless belt. When passing through the press contact portion, the toner image is fused and permanently affixed onto the recording medium. An oil application width O of an oil application roller is shorter than belt width B of the endless belt, and a maximum passing width P of a recording medium that may be supplied for the image formation, but is longer than a maximum image-forming width I within which an image may be formed on the recording medium.
摘要:
A recording medium having a toner image formed thereon is moved to pass through a press contact portion between an endless belt being heated and an pressure roller pressed against the endless belt. When passing through the press contact portion, the toner image is fused and permanently affixed onto the recording medium. An oil application width O of an oil application roller is shorter than belt width B of the endless belt, and a maximum passing width P of a recording medium that may be supplied for the image formation, but is longer than a maximum image-forming width I within which an image may be formed on the recording medium.
摘要:
A fixing apparatus including a heat roller having a heat source therein; and first and second pressing rollers arranged to be pressed sequentially against the heat roller beginning with a more upstream pressing roller in a direction of rotation of the heat roller, wherein when the hardness of the heat roller is Hh, the hardness of the first pressing roller is Hp1 and the ratio of the hardness of the two rollers satisfies Hr1=Hh/Hp1, the heat roller and the first pressing roller are structured in such a manner that the following condition is satisfied: Hr1.gtoreq.1.5.