| Patent application number | Description | Published |
|---|
| 20090003896 | METHOD AND APPARATUS FOR ENHANCED SHEET STRIPPING - An enhanced sheet stripping method and apparatus for stripping toner image carrying copy sheets from a surface of a moving heated fusing member forming a fusing nip. The apparatus includes (a) a moving assembly for moving a cut sheet towards the fusing nip; (b) a sheet curling device positioned upstream of the fusing nip relative to movement of the cut sheet for inducing a desired pre-curl in the cut sheet before the cut sheet enters the fusing nip; and (c) a sheet stripping device positioned downstream of the fusing nip for stripping the cut sheet from contact with the surface of the moving heated fusing member as the cut sheet exits the fusing nip. The method includes inducing a desired curl in the cut sheet before the cut sheet enters the fusing nip and enhanced stripping the cut sheet from contact with the surface of the fuser roll as the cut sheet exits the fusing nip. | 01-01-2009 |
| 20090087234 | ENHANCED FUSER STRIPPING SYSTEM - An improved fuser includes a fuser member, a pressure member that forms a nip with the fuser member through which copy sheets pass to have images fused thereon and an air knife to assist in peeling copy sheets from the fuser member. The air knife has a device connected to it that blocks entrained airflow between the fuser and air knife to reduce fuser cooling and power loss. | 04-02-2009 |
| 20090116888 | THERMALLY UNIFORM PAPER PREHEAT TRANSPORT - A pre-heater system and adapted to be used on an electrostatic marking apparatus for improving gloss on media having marking thereon at a location in the apparatus prior to a conventional fuser roll assembly or station, the system including a primary heater adapted to blow pressurized hot air into a surface of an image receiving media in order to substantially dispense hot air throughout an entire paper or media surface; and a preheat media transport for transporting media from the location in the apparatus prior to the conventional fuser roll assembly or station through the primary heater, the preheat media transport includes means for maintaining the preheat media transport at a substantially uniform predefined temperature. | 05-07-2009 |
| 20090304419 | ACTIVE ROTATION OF AIR KNIFE FOR INCREASED PERFORMANCE - According to aspects of the embodiments, there is provided a method of optimizing an electro-photographic reproduction machine having a fusing subsystem and an air knife. The methods acquire at least one electro-photographic reproduction machine objective and media characteristic; and the acquired objective and characteristic are used to determine values for the pressurized air emitted from the air knife, the position of the air knife, and the rotation of the air knife relative to a fuse roll in the fusing subsystem. The methods further disclose acquiring the leading edge of the media being stripped and then using the beam strength of the media to assist in stripping the body of the sheet. The air knife can be controlled by a controller or a processor based on determined optimization parameter values that relate to objectives and media characteristics. | 12-10-2009 |
| 20100238249 | VACUUM TRANSPORT DEVICE WITH NON-UNIFORM BELT HOLE PATTERN - An apparatus comprises a vacuum belt having belt edges and a contact surface between the belt edges. The contact surface is adapted to contact sheets of print media and the sheets of print media have sheet edges and a central sheet region. The contact surface has a central belt region located where the central sheet region of the sheets of print media contacts the contact surface of the vacuum belt. The contact surface has border regions located where the sheet edges of the sheets of print media contact the contact surface of the vacuum belt. The central belt region is located between the border regions. The contact surface has vacuum holes, and the vacuum holes comprise an irregular pattern, such that a different density of holes is located within the border regions relative to the central belt region. | 09-23-2010 |
| 20110079354 | APPARATUSES USEFUL IN PRINTING, FIXING DEVICES AND METHODS OF STRIPPING SUBSTRATES FROM SURFACES IN APPARATUSES USEFUL IN PRINTING - Apparatuses useful in printing, fixing devices and methods of stripping media from surfaces in apparatuses useful in printing are provided. An exemplary embodiment of an apparatus useful in printing includes a first member including a first surface; at least one heating element for heating the first surface of the first member; a second member including a second surface forming a nip with the first surface, the nip including an inlet end at which a substrate enters the nip and an outlet end at which the substrate exits from the nip; and an air knife disposed downstream from the outlet end of the nip and extending along an axial direction of the first member, the air knife including a first end, a second end opposite to the first end and a plurality of axially-spaced nozzles disposed between the first end and second end; and at least one gas inlet through which gas is supplied to the air knife. The nozzles are oriented to eject the gas toward the first surface downstream from the outlet end of the nip to facilitate stripping of the substrate from the first surface. The air knife has a configuration and is positioned proximate to the nip such that the substrate does not contact the air knife after exiting the outlet end of the nip when the nozzle gas ejection is ON or OFF. | 04-07-2011 |
| 20110139577 | SURFACE ROUGHNESS FOR IMPROVED VACUUM PRESSURE FOR EFFICIENT MEDIA HOLD-DOWN PERFORMANCE - Provided are vacuum transport systems, methods of making them and methods of transporting one or more objects. In accordance with various embodiments, there is a vacuum transport system including a vacuum plenum and one or more transport members configured to rotate around the vacuum plenum and wherein at least one of the one or more transport members can include a substrate, the substrate including a plurality of holes extending from a first side proximate to the vacuum plenum to a second side proximate to an object, wherein a surface of the second side comprises a textured surface having an average roughness Ra of about 2 μm to about 100 μm. | 06-16-2011 |
| 20110139586 | VACUUM TRANSPORT BELTS - Provided are media vacuum transport systems including media vacuum transport members, methods of making media vacuum transport members, and method of transporting media. In accordance with various embodiments, there is a media vacuum transport system including a vacuum plenum one or more transport members configured to rotate around the vacuum plenum and wherein at least one of the one or more transport members can include a substrate, the substrate comprising a plurality of holes extending from a first side proximate to the vacuum plenum to a second side proximate to the media, and a top coat layer disposed over the substrate, wherein the top coat layer can include a plurality of particles dispersed in a resin to provide an average surface roughness Ra of about 2 μm to about 100 μm. | 06-16-2011 |
