摘要:
Fixing devices for fixing marking material to a web, printing apparatuses and methods of fixing marking material to a web are provided. An exemplary embodiment of the fixing devices includes a first roll including a heated outer surface; a second roll forming a fixing nip with the outer surface of the first roll at which a continuous web on which marking material is disposed is received; a third roll positioned to contact the web prior to entering the fixing nip; and an adjustment mechanism connected to the third roll. The adjustment mechanism is operable to move the third roll to vary a wrap length of the web contacting the outer surface of the first roll upstream from the fixing nip to control pre-heating of the web and marking material by contact with the outer surface prior to entering the fixing nip. The first roll and second roll are operable to apply heat and pressure to the pre-heated web and marking material at the fixing nip to fix the marking material to the web.
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:
Exemplary embodiments provide materials and methods for a pen that can include a writing end for writing an image on an erasable medium and an erasing end for locally erasing an image from the erasable medium.
摘要:
Apparatuses useful for printing and methods of are provided. The apparatus includes a user interface for operating the printing apparatus, a fuser for fusing media, the fuser having a plurality of temperature settings, a gloss meter for measuring gloss of an image fused on the media, and a controller controlling the printing apparatus, wherein the controller: a) causes fusing of a plurality of media of a first type at a nominal fusing temperature, and then measuring a temperature of the pressure roll as a steady state pressure roll temperature, b) causes media of the first type to be input to the fuser to fuse an image onto the media, the fuser having a first fusing temperature, c) causes the gloss meter to measure a gloss level of the image fused on the media, and sending the measured gloss level with the first type of media to the controller, d) causes steps b) and c) to be repeated at various fusing temperatures different from the first fusing temperature, and saving the measured gloss levels with corresponding fuser temperatures, e) in response to a user indication of a desired gloss level received over the user interface, sets a temperature of the pressure roll to the steady state pressure roll temperature, and f) fuses media utilizing one of the measured fusing temperatures corresponding to the desired gloss level.
摘要:
Fusers, printing apparatuses and methods of fusing toner on media are disclosed. An embodiment of a fuser for fusing toner on a medium includes at least two modules arranged along a process direction of the medium, each module having an ON state in which the module discharges a hot gas and an OFF state in which the module does not discharge the hot gas; and a controller connected to the modules for controlling the ON/OFF state of each module to control the discharge of the hot gas from each module onto the medium as the medium is transported past the modules in the process direction.
摘要:
Apparatuses useful for printing and methods for stripping media from surfaces in apparatuses useful for printing are disclosed. An apparatus useful for printing including a first member including a first outer surface; a second member including a second outer surface; a belt including an inner surface and an outer surface; a first nip formed by contact between the inner surface of the belt and the second outer surface and contact between the outer surface of the belt and the first outer surface; and a stripping mechanism including a stripping member disposed internal to the belt. The stripping member is positionable relative to the first nip to vary a pressure applied by the outer surface of the belt against the first outer surface downstream from the first nip. The media are stripped from the outer surface of the belt after exiting from the first nip.
摘要:
Apparatuses useful for printing and methods of cleaning debris from a surface in an apparatus 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, a stripping member located between the inner surface of the belt and the first roll for facilitating stripping of media from the outer surface of the belt after the media is fed through the nip with the belt moving in a first direction, wherein debris builds up on the inner surface of the belt adjacent to the stripping member during stripping of the media, and a cleaning device for cleaning the debris from the inner surface of the belt upon movement of the belt in a second direction opposite to the first direction.
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:
An apparatus (100) and method (700) that can control fuser temperature is disclosed. The apparatus can include an image fuser member (110) rotatably supported in the apparatus, where the image fuser member can be configured to fuse an image on media (170). The apparatus can include a heater (120) coupled to the image fuser member, where the heater can be configured to heat the image fuser member. The apparatus can include a pressure assembly (130) rotatably supported in the apparatus and coupled to the image fuser member, where the pressure assembly can be configured to exert pressure against the image fuser member. The apparatus can include a temperature sensor (140) coupled to the pressure assembly, where the temperature sensor can be configured to sense a temperature of the pressure assembly. The apparatus can include a controller (150) coupled to the heater and coupled to the temperature sensor, where the controller can be configured to adjust the temperature set point of the image fuser member based on the sensed temperature of the pressure assembly.
摘要:
Disclosed are an electrophotographic apparatus for forming images on sheets, and corresponding methods. The electrophotographic apparatus includes a fuser web for fusing toner particles to the sheets to form the images, a sensor for detecting a defect position of at least one defect in the fuser web, and a controller that receives the defect position of the at least one defect on the fuser web from the sensor, wherein the controller positions the fuser web relative to the sheets to avoid the at least one defect from coming into contact with the toner on the sheets during fusing of the toner particles to the sheets.