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Class 399/324 - Offset prevention


Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein an arrangement is provided for preventing
No. of patents: 181
Last issue date: 03/24/2009


1          
NumberTitleIssue Date
7509084Electrophotographic marking systems with release agents
This is an electrophotographic marking system with the ability to minimize adherence of a marking composition to a fixing component in the system, such as a fuser roll. In this manner, offset is avoided and a better image results on the paper or receiving medium. Th...
03/24/2009
7426364Fixing method, fixing device, and image forming apparatus
A fixing device includes a fixing member in contact with an unfixed image constituted of developer T on one side of a recording material P; and a pressure member pressed against the fixing member. The fixing device fixes the unfixed image onto the recording material...
09/16/2008
7389077Charge control for fuser roll to prevent print history related marks on copy
The magnitude and polarity of the voltage on the fuser roll surface is controlled by either electronic charge application means or by applying charge control agents to the fuser. For negative toner, the fuser roll voltage must also be negative (and visa versa). This...
06/17/2008
7361869Method for the production of an electrically conductive resistive layer and heating and/or cooling device
An electrically conductive resistive layer (26) is produced by thermally spraying an electrically conductive material (18) onto the surface of a non-conductive substrate (12). Initially, the material layer (14) arising therefrom has no de...
04/22/2008
7362994Release agent application apparatus and method
A release agent application apparatus includes a liquid-permeable member, a first release agent metering member abutting the liquid-permeable member, and a pump operatively connected to the liquid-permeable member to pump the release agent therethrough. ...
04/22/2008
7352378Image forming device
An image forming device includes an image forming unit and a thermal fixing unit. The image forming unit uses a plurality of different color developing agents to form a color image on a recording medium. The plurality of different color developing agents are configu...
04/01/2008
7348701Driving unit and image forming apparatus
A driving unit including a motor, a support bracket supporting the motor, at least one stud supporting a gear which is rotated with a driving force of the motor, and a heatproof member disposed between a frame fastening the support bracket and the stud, and an image...
03/25/2008
7319839Fixing device
A fixing device is disclosed that includes a fixing roller, a pressure roller that is in pressure contact with the fixing roller, first and second belt support rollers that are mutually spaced apart from each other, and an endless belt that is wrapped around both th...
01/15/2008
7312895Image processing apparatus and method
This invention has as its object to prevent image quality deterioration of vector and raster image parts by allowing adjustment of the toner amount for respective objects when single image data includes both vector and raster image parts. To accomplish this, image d...
12/25/2007
7305208Image heating apparatus with discharge occurring between a charge eliminating member and a pressure roller
The image heating apparatus for heating a toner image formed on a recording material, includes a rotatable member, a pressure roller which contacts with the rotatable member, wherein the recording material is heated while being conveyed by a nip portion between the ...
12/04/2007
7286781Developer, image forming method and image forming apparatus
A toner for developing a latent image includes, at least, a binder resin, a releasing agent, a coloring agent and a fluidizing agent. A melting point Tw of the releasing agent is higher than or equals to a softening temperature Ts of the developer measured by a capi...
10/23/2007
7283777System and method for characterizing fuser stripping performance
Disclosed herein are several embodiments to facilitate the characterization of fuser stripping performance. Recognizing that the characteristics of a substrate exiting a fusing nip are indicative of the operation of the nip and the stripping operation itself, severa...
10/16/2007
7254361Fixing apparatus and image-forming device
A fixing apparatus for fixing a visible image, including a first rotating device for rotatably fixing a visible image transferred on a medium from a transfer device which develops an electrostatic latent image formed on a latent image bearing body with a developer, ...
08/07/2007
7242875Indicator of properly cured ink for electrophotographic equipment
A method of printing comprising the steps of marking the surface of a test preprinted media with a first marking material; placing the media adjacent to a transfer media; disposing the test media and the transfer media into the nip of a fuser roller assembly to ther...
07/10/2007
7234806Phase change ink imaging component with fluorosilicone layer
An offset printing apparatus having a coated imaging member for use with phase-change inks, has a substrate, an optional intermediate layer, and thereover an outer coating with a fluorosilicone material, and an optional heating member associated with the offset prin...
06/26/2007
7233764Fixing device in image forming apparatus and image forming apparatus with fixing device
A fixing device includes: a fixing belt member configured to be endless and rotatable; driving force transmission members that are disposed on respective ends of the fixing belt member, and transmits a rotational driving force to the fixing belt member; and a pressi...
06/19/2007
7222954Phase change ink imaging component having elastomer outer layer
An offset printing apparatus having a coated imaging member for use with phase-change inks, has a substrate, an optional intermediate layer, and thereover an outer coating having an elastomer of monomers selected from the group consisting of halogenated monomers, po...
05/29/2007
7215915Method and apparatus for variable width surface treatment application to a fuser
The invention relates to application of a surface treatment to a fuser, typically in a print process. According to various aspects of the invention, methods and apparatus are provided for applying surface treatment to a fuser comprising varying a width of surface tr...
05/08/2007
7187898Image forming apparatus having a fixing device for fixing toner including wax on a transfer sheet
An image forming apparatus having a fixing device for fixing toner including wax on a transfer sheet including a fixing rotating member for fixing toner on the transfer sheet with a rotation thereof, and first cleaning member contacting to the fixing rotating member...
03/06/2007
7187894Image forming apparatus having a heat belt
There is provided an image forming apparatus having an image forming section for forming an unfixed image on a transfer medium and a fixing device for fixing the unfixed image by sandwiching and heating the transfer medium that holds the unfixed image, wherein, the ...
03/06/2007
7181157Duplex image forming device and reversible transportation unit
A duplex image forming device includes an image forming device and a reversible transportation unit. The image forming device includes a paper transportation path, a paper feed unit which transports a paper to the paper transportation path, a printing unit which pri...
02/20/2007
7177569Image forming apparatus
An image forming apparatus includes: an endless belt; a plurality of image carriers; a plurality of charging units; an exposing unit; and a plurality of developing units configured to develop an electrostatic latent image on each of the image carrier with a develope...
02/13/2007
7158747Belt-type fixing device
A belt-type fixing device is provided by which driving torque for a fixing belt can be reduced. The belt-type fixing device has the fixing belt wound around a heating roller and around a nip forming member, and has a pressurizing roller that is in pressure co...
01/02/2007
7130571Variable torque device for maintaining constant web tension
A variable torque device for maintaining constant tension in a web of material as the web is unwound from a supply roll. The variable torque device includes a lead screw attached to the shaft of the supply roll via an appropriate gear ratio. A coil spring is located...
10/31/2006
7113735Precision release agent management system
A precision release agent management system for an electrostatographic reproduction apparatus fuser device. The precision release agent management system includes a reservoir adapted to contain a release agent. A wick absorbs release agent from the reservoir. A mete...
09/26/2006
7106998Fixing apparatus with guiding member for guiding releaser
A fixing apparatus of the present invention is provided with (i) a roller, to which releaser gets applied (ii) a releaser applying member for applying the releaser on the roller by touching the roller while the roller is rotating, and (iii) a releaser dripping secti...
09/12/2006
7104216Coating liquid application apparatus for ink-printed medium and image printing apparatus having same
A coating liquid application apparatus is capable of automatically and properly applying to a printed surface of a print medium a coating liquid, such as coating materials that improve weatherability of the printed surface. For that purpose, the apparatus includes a...
09/12/2006
7064295Thermal processor having flexible duct
A thermal processor including a heated drum assembly for thermally developing an image in an imaging media. Thermal processor includes an enclosure spaced from and forming an oven around heated drum assembly, enclosure having a media entrance, a media exit, and a ve...
06/20/2006
7061637Method and apparatus for image forming capable of effectively collating a stack of single-/double-sided recording sheets in a desired ejection tray
An image forming apparatus includes first and second image carrying members, ejection trays, and a sheet transferring mechanism. The first image carrying member carries images in increasing order of corresponding sheet numbers. The second image carrying member carri...
06/13/2006
7058348Producing an enhanced gloss toner image on a substrate
Producing an enhanced gloss electrophotographic toner image on a substrate by coating colored fusible toner particles supported on a substrate with a layer of clear toner containing an offset preventing wax, transporting the substrate bearing clear toner coated colo...
06/06/2006
7054588Image production system with release agent system and associated method of controlling release agent transfer
A fuser release agent dispensing system for a rotatable fuser, including a transfer stage and a metering stage. The transfer stage includes a first roller having a surface rotatable about a fixed axis, and a second roller positionable for contacting the first roller...
05/30/2006
7046950Image forming apparatus
An embodiment of the invention includes a fixing device of an image forming apparatus. The fixing device may include a first pressure applying roller, a second pressure applying roller which is pressed onto the first pressure applying roller, and a fixing belt which...
05/16/2006
6961532Image heating apparatus
An image heating apparatus has an endless film which has a metal layer; a device for increasing the temperature of the film; a regulating member for preventing the lopsided movement of the film; and a lubricating part disposed in a contact part between the film and ...
11/01/2005
6947698Fixing apparatus of electrophotographic printer
A fixing apparatus employs a dimethylsilicone oil as a base oil. Two kinds of the oils including amino group as a functional group are mixed to use as a lubricant, thereby enabling the surface of a heating roller to exhibit the most excellent releasing property with...
09/20/2005
6937837Image heating apparatus having a limiting member
An image heating apparatus includes a rotatable member contactable to a recording material carrying an image; and a limiting member for limiting movement of the rotatable member in a direction of a generating line of the rotatable member, wherein the limiting member...
08/30/2005
6925281Method and apparatus for finishing a receiver sheet or similar substrate
Method and apparatus for finishing a receiver sheet or similar substrate by providing a protective coating on the receiver sheet for the benefit of, for example, protecting an image resident thereon. Such coating is created by applying and fusing a mixture containin...
08/02/2005
6915100Image forming process and image forming apparatus
In the image forming process of the present invention wherein a toner is fixed on an electrophotographic image-receiving sheet using a belt fixing and smoothing device, the relationship among the temperature of a heating and fixing roller, the melting point of a ton...
07/05/2005
6906145Bonding of a fluoropolymer layer to a substrate
The present invention comprises a substrate having a fluoropolymer on at least one of its surfaces wherein one of the substrates or the fluoropolymer comprises a hydride function MH wherein M is Si, Ge, Sn or Pb. The invention further comprises articles comprising t...
06/14/2005
6904256Image forming device
An image forming device includes an image forming unit and a thermal fixing unit. The image forming unit uses a plurality of different color developing agents to form a color image on a recording medium. The plurality of different color developing agents are configu...
06/07/2005
6904262Double-faced image formation system
The invention provides a double-faced image formation system that prevents transfer and adhesion of a lubricant to an image retaining conveyer and an intermediate transfer part. The system is provided with, on a return path for reversing and conveying a sheet having...
06/07/2005
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