Patent application number | Description | Published |
20080226353 | APPARATUS AND METHODS FOR LOADING A DONOR ROLL UTILIZING A SLOW SPEED TRIM ROLL - An apparatus for loading one or more donor rolls of a developer unit, comprising a developer housing having a reservoir for a developer material, a rotatable first donor roll that delivers the toner onto a moving photoconductive member, a trim roll that receives developer material from the reservoir and delivers the developer material to a first magnetic brush roller that delivers toner to the first donor roll, and a rotatable second magnetic brush roll that receives the developer material from the first magnetic brush roll and delivers the toner to the first donor roll. The apparatus may further comprise a rotatable second donor roll that receives the toner from the second magnetic brush roll and delivers the toner onto the photoconductive member, and a rotatable third magnetic brush roll that receives the developer material from the second magnetic brush roll and delivers the toner to the second donor roll. The apparatus may further comprise a trim blade for trimming excess developer material from the trim roll. | 09-18-2008 |
20080226354 | APPARATUS AND METHODS FOR LOADING A DONOR ROLL - An apparatus for loading one or more donor rolls of a developer unit, comprising a developer housing having a reservoir for a developer material, a rotatable first donor roll that delivers the toner onto a moving photoconductive member, a rotatable first magnetic brush roll that receives the developer material from the reservoir and delivers the toner to the first donor roll, and a rotatable second magnetic brush roll that receives the developer material from the first magnetic brush roll and delivers the toner to the first donor roll. The apparatus may further comprise a rotatable second donor roll that receives the toner from the second magnetic brush roll and delivers the toner onto the photoconductive member, and a rotatable third magnetic brush roll that receives the developer material from the second magnetic brush roll and delivers the toner to the second donor roll. | 09-18-2008 |
20090160920 | Pressure And Transfix Rollers For A Solid Ink Jet Printing Apparatus - A printing machine for transferring a phase change ink onto a print medium includes a component for applying a phase change ink in an image, an imaging member for accepting the image and transferring the image from the imaging member to the print medium and a pressure member positioned in association with the imaging member to form a nip through which the print medium passes. The pressure member includes an outer layer with a tailored electrical conductivity to eliminate ghosting in duplex printing modes. The outer layer comprises a composite of a polymer and carbon nanotubes and/or graphenes. A similar outer layer may be implemented on a pressure roller in a direct-to-paper printing machine. | 06-25-2009 |
20100045720 | Method and System for Achieving Uniform Ink and Web Temperatures for Spreading - A system for use with a phase change ink imaging device comprises a leveler roller disposed along a web path downstream from a printing station. The leveler roller is formed of a thermally conductive material and includes a heater configured to generate thermal energy to heat the leveler roller to a leveling temperature. The leveler roller is positioned to be partially wrapped by the continuous web in order to generate a predetermined dwell time between the continuous web and the leveler roller as the continuous web is being moved. The predetermined dwell time is configured to allow conductive heat transfer to occur between the continuous web and the leveler roller to equalize the continuous web and the melted phase change ink temperatures on the web to within a predetermined range about the leveling temperature. A midheater is disposed along the web path downstream from the leveler roller. The midheater is configured to heat the continuous web and the melted phase change to a midheating temperature that is greater than the leveling temperature. | 02-25-2010 |
20110025791 | Rollers for Phase-Change Ink Printing - A printer for transferring a phase-change ink onto a substrate comprises components for conveying the substrate along a path through the printing machine, a printing station including a plurality of printheads disposed along the path and configured to transfer the phase-change solid ink onto the substrate as it is conveyed along the path, a plurality of metal backing rollers facing the plurality of printheads and arranged to support to the substrate passing between the backing rollers and the printheads, and a spreader station receiving the substrate from the printing station and configured to spread the phase-change solid ink on the substrate, the spreader station including a spreader roller and a metal pressure roller opposing the spreader roller. Each of the non-oiled metal rollers includes a coating that is an oleophobic that has low adhesion toward the solid ink image but sufficient lateral friction as to not slide against the ink or paper web. | 02-03-2011 |
20110109683 | Temperature Leveling Roller and Pressure Nip Assembly - An imaging device includes a substantially continuous web of media, and a web transport system configured to transport the continuous web along a web path. A print station is positioned along the web path and is configured to apply ink to the continuous web. A temperature leveling ink spreader is disposed along the web path downstream from the print station. The temperature leveling ink spreader includes a leveler roller including a heater configured to generate thermal energy to heat the leveler roller to a spreading temperature. The leveler roller is positioned to be partially wrapped by the continuous web to generate a predetermined dwell time between the continuous web and the leveler roller as the continuous web is being transported to equalize the temperatures of the web and ink on the web to within a predetermined range about the spreading temperature. The temperature leveling ink spreader includes a pressure roller positioned adjacent the leveler roller to form a spreading nip therebetween through which the continuous web is fed after the predetermined dwell time. The spreading nip is configured to apply a predetermined pressure to the continuous web and the ink thereon. | 05-12-2011 |
20120147111 | Pressure And Transfix Rollers For A Solid Ink Jet Printing Apparatus - A printing machine for transferring a phase change ink onto a print medium includes a component for applying a phase change ink in an image, an imaging member for accepting the image and transferring the image from the imaging member to the print medium and a pressure member positioned in association with the imaging member to form a nip through which the print medium passes. The pressure member includes an outer layer with a tailored electrical conductivity to eliminate ghosting in duplex printing modes. The outer layer comprises a composite of a polymer and carbon nanotubes and/or graphenes. A similar outer layer may be implemented on a pressure roller in a direct-to-paper printing machine. | 06-14-2012 |
20120206527 | RADIANT HEATER FOR PRINT MEDIA - A heater panel is configured to heat a print medium in a printer. The heater panel includes electrical conductors that form a plurality of heating zones to emit radiant energy toward the print medium. Heating zones that correspond to edges of the print medium emit radiant energy with a greater power density than heating zones that correspond to central portions of the print medium. The heater panel has a plurality of angled positions to vary the view factor for high gain control. | 08-16-2012 |
20130201254 | APPARATUS AND METHOD FOR REMOVAL OF INK FROM AN EXTERIOR OF A PRINTHEAD - In an inkjet printing apparatus, a heater heats a drib bib that is located below a plurality of inkjets in a printhead to a temperature that melts ink collected on a surface of the drip bib. Pressurized air is directed toward the surface of the drip bib to remove the melted ink from the surface of the drip bib. | 08-08-2013 |
20130337151 | APPARATUS AND METHOD FOR APPLYING A RELEASE AGENT TO A SUBSTRATE HAVING A PRINT IMAGE - An approach is provided for applying a release agent to a substrate having a first surface and a second surface. The approach involves determining a presence of at least one ink image applied to at least one portion of one of the first surface and the second surface of the substrate by way of one or more steps of a printing process. The approach also involves determining the substrate is to be made ready for printing one or more other images on the other of the first surface and the second surface by one or more steps of another printing process. The approach further comprising causing, at least in part, the release agent to be applied to the substrate so as to cover the at least one portion of the first surface and the second surface of the substrate upon which the at least one ink image is applied at a time before the substrate is subjected to the one or more steps of the another printing process. | 12-19-2013 |
20130338812 | METHOD AND APPARATUS FOR APPLYING A RELEASE AGENT TO A SUBSTRATE HAVING A PRINT IMAGE - An approach is provided for applying a release agent to a substrate having at least a first surface and a second surface. The approach involves determining a presence of at least one ink image applied to at least one portion of at least one of the first surface and the second surface of the substrate by way of at least one step of a printing process. The approach also involves causing, at least in part, the release agent to be applied to the substrate so as to cover the at least one portion of at least one of the first surface and the second surface of the substrate upon which the at least one ink image is applied. | 12-19-2013 |