摘要:
An apparatus and method for stripping media from a surface and useful in printing may include a first member, a fixing belt, a first nip, a second nip, and a stripping device including a curved stripping edge contacting the inner surface of the fixing belt, the stripping edge being defined by a radius of less than about 10 mm, the stripping edge being spaced from the first outlet end of the first nip by a distance of less than about 10 mm, and the fixing belt bending at a stripping angle of about 20° to about 30° at the stripping edge, the stripping device being adjustably movable by a mechanism to vary the distance from the stripping edge to the first outlet end of the first nip, wherein media are stripped from an outer surface of the fixing belt after exiting from the first outlet end of the first nip.
摘要:
Apparatuses useful for printing and methods of stripping media from surfaces in apparatuses useful for printing are provided. An exemplary embodiment of an apparatus useful for printing includes a first roll, a belt including an inner surface and an outer surface, the first roll and the outer surface of the belt forming a nip, and a stripping member located internal to the belt. The stripping member includes a first needle bearing, wherein the first needle bearing contacts with the inner surface of the belt to facilitate stripping of media fed to the nip from the outer surface of the belt.
摘要:
Apparatuses useful for printing and methods of stripping media from surfaces in apparatuses useful for printing are provided. An exemplary embodiment of an apparatus useful for printing comprises a first roll; a belt including an inner surface and an outer surface, the first roll and the outer surface of the belt forming a nip; and a stripping member located internal to the belt. The stripping member includes at least a first stripping surface and a second stripping surface having a smaller curvature than the first stripping surface. The stripping member is rotatable to selectively position one of the first stripping surface and the second stripping surface in contact with the inner surface of the belt. The one of the first stripping surface and the second stripping surface facilitates stripping of a medium fed to the nip from the outer surface of the belt.
摘要:
Apparatuses useful in printing, fixing devices and methods of preheating substrates in apparatuses useful in printing are provided. An exemplary embodiment of the apparatuses useful in printing includes a first member including a first surface; a second member including a second surface forming a nip with the first surface; a substrate cooler disposed downstream from the nip to receive a first substrate exiting the nip, the substrate cooler removing heat from the first substrate by conduction; a substrate pre-heater disposed upstream from the nip; and a first heat transfer system for transferring heat from the substrate cooler to the substrate pre-heater. The substrate pre-heater applies the heat to conductively pre-heat a second substrate before the second substrate enters the nip.
摘要:
Apparatuses useful for printing and methods of controlling a temperature of a surface in an apparatus useful for printing are disclosed. An exemplary embodiment of the apparatuses includes a first roll including a first outer surface and at least one first heating element for heating the first outer surface; a second roll including a second outer surface; a nip between the first outer surface and the second outer surface; a first temperature sensor for sensing a pre-nip temperature at a pre-nip location; and a first voltage modulator connected to each first heating element and the first temperature sensor. The first voltage modulator receives a temperature signal from the first temperature sensor indicative of the pre-nip temperature and modulates an AC voltage supplied to each first heating element to maintain each first heating element continuously ON at a power level ranging from partial power to full power to control the pre-nip temperature.
摘要:
Fuser assemblies for fusing toner on media, xerographic apparatuses, and methods of fusing toner on media in xerographic apparatuses are disclosed. An embodiment of the fuser assemblies includes a fuser belt; a first roll supporting the fuser belt, the first roll including a first heating element and a second heating element extending axially along the first roll and along a width of the fuser belt, the first heating element being longer than the second heating element; and a second roll supporting the fuser belt, the second roll including a third heating element and a fourth heating element extending axially along the second roll and along the width of the fuser belt, the third heating element being longer than the fourth heating element.
摘要:
Fuser assemblies for fusing toner on support sheets, electrophotographic apparatuses, and methods of fusing toner on support sheets are disclosed. The fuser assembly includes a fuser belt; a thermally-insulated enclosure surrounding at least a portion of the fuser belt; a conveyor for conveying the support sheet to a nip at which the fuser belt contacts the support sheet and the toner is fused onto the support sheet; a pre-heater; and a heat transfer system for transferring heat from inside of the enclosure to the pre-heater, the pre-heater using the heat to pre-heat the support sheet before the support sheet is conveyed to the nip.
摘要:
A radiation curable gel ink spreading system includes a print head for jetting radiation curable gel ink onto a front side of a substrate, a heated re-flow drum for contacting a back side of the substrate to heat the gel ink and cause the ink to re-flow, and at least one radiation source that irradiates the heated ink to reduce or stop re-flow. A re-flow drum temperature, amount of radiation emission per unit time, radiation source location including a substrate wrap angle with respect to the re-flow drum and/or the radiation source, a distance between a re-flow zone start and the radiation source, and a gap distance between the radiation source and the substrate, and a process speed or substrate translation speed are adjustable for achieving desired spreading characteristics.
摘要:
An apparatus for applying release agent to a fuser roll used in printing a print job is provided. The apparatus has a release agent metering roll supported for contact with a supply of release agent material; a variable speed drive arranged to effect movement of the release agent metering roll in an endless path at different surface velocities; a donor roll supported in contact with the release agent metering roll and the fuser roll, the donor roll arranged to convey release agent material from the release agent metering roll to the fuser roll at various rates depending on a surface velocity of the release agent metering roll; and a controller that controls a velocity of the variable speed drive such that the surface velocity of the release agent metering roll varies relative to a surface velocity of the fuser roll and the engagement and disengagement times at the start and end of the print job. The variable speed drive is operative independently of the fuser roll.
摘要:
Disclosed are a method of forming images on media in an electrophotographic apparatus, and corresponding electrophotographic apparatus. The method includes measuring a temperature of the media with a sensor after the toner particles have been fused to the media, and controlling a temperature of the heater device with a controller based on the measured temperature of the media, wherein the temperature is controlled to obtain a desired gloss level for subsequent media to be fused.