Abstract:
An image forming apparatus has a flash light fixing apparatus (32) comprising a flash light fixing unit (33) to irradiate a flash light to paper to which toner has been transferred, and a paper feed apparatus (34) provided opposite the flash light fixing unit (33). The paper feed apparatus (34) comprises a paper feed mechanism (50) and a paper guide mechanism (60) that guides paper that is fed by the paper feed mechanism (50). The paper guide mechanism (60) comprises a plural number of metal plates (61) disposed so that end surfaces (61a) thereof oppose the flash light fixing unit (33), and arranged so as to extend in the same direction as the direction of paper feed. The end surfaces (61a) of said metal plates (61) guide the paper.
Abstract:
An electrostatic blackboard having an image display function for displaying on an electrostatically recordable blackboard display a visible toner image converted from an electrostatic latent image formed on the blackboard by an electrostatic recording head(6) includes copying apparatus for transfering the visible image on the blackboard to a large-size paper sheet. A semi-permanent latent image toner fusing operation is provided to create a semi-permanent visible image, yet permit easy erasing.
Abstract:
Image defining toner is transferred to cut sheets and fused at one of two fuser stations (21,22). One station (22) is positioned to fuse the image on one side when duplex copying or printing is selected. The other fuser station (21) performs fusing when simplex copying is selected but fuses the second side copy for duplexing. When flash lamps are employed for the fuser station, the lamps are composed of multiple bays with a single power source coupled to each bay in sequence so that the power source size need only accommodate the power level demand of one bay. The time between trigger pulses is extended by commencing fusing with an intermediate bay followed by the initial bay and then the final bay as the image area requiring fusing passes along its path in proximity to the faces of the flash lamp bays.
Abstract:
A flash fixing apparatus is provided for fixing an unfixed toner image on a base material by light radiated from a flash lamp. The apparatus includes a conveyor mechanism (1) for conveying the base material, the flash lamp (4) for radiating light toward the unfixed toner image on the base material which is being conveyed by the conveyor mechanism (1), and an auxiliary heating system for additionally heating the base material. The conveyor mechanism (1) comprises a negative pressure compartment having an upper board (21), through which a plurality of suction holes (22) are formed, and a plurality of conveyor belts (11) arranged spacedly from one another in such a manner that the coveyor belts are caused to move over the upper board (21) of the negative pressure compartment (2). The auxiliary heating system comprises at least one auxiliary heater (3) disposed within the negative pressure compartment (2) and adapted to heat the upper board (21) of the negative pressure compartment (2).
Abstract:
An image forming apparatus includes a transport unit, a transfer unit and a support unit. The transport unit transports a recording medium. The transfer unit transfers an image formed with particles onto an image formation surface of the recording medium transported by the transport unit by an electric field formed between the transfer unit and the image formation surface by making contact with the image formation surface. The support unit supports the recording medium, is transported to the transfer unit together with the recording medium by the transport unit, and is not directly conductive with the transfer unit.
Abstract:
An optical fixing apparatus includes a transport unit that transports a recording medium in a first direction in a first fixing process and a second fixing process subsequent thereto and transports the recording medium in a second direction after the first fixing process and before the second fixing process; a light irradiating unit that irradiates the recording medium with light having a predetermined intensity while the recording medium is transported in the first and second fixing processes; a controller that performs a control so that the intensity of the light is lower than the predetermined intensity in a first period before the end of the first fixing process and a second period after the start of the second fixing process, and so that an area of the recording medium irradiated in the first period and an area of the recording medium irradiated in the second period overlap.
Abstract:
According to an aspect of the invention, a fixing device includes a first laser unit and a second laser unit. The first laser unit outputs a first laser beam to irradiate a visible image formed of image forming material on a recording medium with the first laser beam. The second laser unit outputs a second laser beam to irradiate the visible image with the second laser beam after being irradiated with the first laser beam. The first laser beam and the second laser beam is configured to satisfy relations: W1 t2, W1 is an optical output per unit area of the first laser beam, W2 is an optical output per unit area of the second laser beam, t1 is an irradiation time per unit area of the first laser beam, and t2 is an irradiation time per unit area of the second laser beam.
Abstract:
A fixing device includes a first irradiation unit that irradiates a laser beam in a first irradiation region toward a recording medium in which unfixed image is formed; a second irradiation unit that irradiates a laser beam toward a second irradiation region; an image information acquiring unit that acquires image information of the first irradiation region; a coating information acquiring unit that divides the first irradiation region into one or a plurality of divided regions, and that acquires coating information that relates to the coating level on the basis of the image information; a transmission information acquiring unit that acquires transmission information that relates to the laser beam which is irradiated to the first irradiation region and passes through the recording material on the basis of the coating information; an irradiation control unit that controls the irradiation energy of the second irradiation unit based on the transmission information.
Abstract:
A fixing device includes a laser light source for irradiating an unfixed toner image formed on a recording sheet, and melts a toner by light from the laser light source to fix the toner image on the recording sheet. Here, where a conveyance speed of the recording sheet is p, a length of a light irradiation area in a conveyance direction of the recording sheet is q, time during which the toner of the unfixed image is subjected to light during conveyance is r, and energy per unit area given to the toner of the unfixed image is J, light output of the laser light source is controlled so that the energy during a constant time r1 from the start of a time r is differentiated from the energy during a time r2 until the end of the time r after the elapse of the r1.