Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7421232 | Device and method for inking of a charge image with toner material in a printer or copier In a device and method for inking of a charge image with toner material in a printer or copier, the charge image corresponding to a print image to be generated is generated on a surface of a photoconductor element comprising a photoconductive layer. At least one lay... | 09/02/2008 |
| 7362991 | Image forming apparatus An image forming apparatus having a photosensitive drum bearing an electrostatic image, and a developing sleeve carrying a developer for developing the electrostatic image, the developing sleeve is in non-contact with the photosensitive drum, and is designed to be f... | 04/22/2008 |
| 7356269 | Apparatus and method for sensing waste toner in an electrophotographic image forming apparatus An electrophotographic forming apparatus includes a light-emitting portion, a light-receiving portion, a waste toner sensing unit which is pivotably installed in a main body where the waste toner container is attachably and detachably mounted between the light-emitt... | 04/08/2008 |
| 7347318 | Image forming device An image forming device includes: a main unit; an image bearing body; a belt unit; and a tension-applying mechanism. The belt unit is detachably mounted in the main unit and has a pair of supporting rollers supporting an endless belt thereon. The endless belt has an... | 03/25/2008 |
| 7314129 | Image forming apparatus The image forming apparatus includes two tension rollers; a conveyor belt movably supported at the two tension rollers; a plurality of transfer parts that are arranged on the back surface side of the conveyor belt and between the two tension rollers, that contact on... | 01/01/2008 |
| 7221893 | Image forming apparatus In an image forming apparatus such as a color laser printer wherein a toner image is transferred onto a continuous paper, one or more of a exposure timing of each exposure device, a rotation speed of each image carrier device, a transfer bias voltage applied to each... | 05/22/2007 |
| 7158738 | Image reader apparatus and cylinder shaped lamp used for the same An image reader apparatus for lighting a manuscript surface of a manuscript in a line state, and for image-forming a reflection light from a reading part of the manuscript surface lighted in the line state, to an image sensor, by an image forming lens which forms a ... | 01/02/2007 |
| 7151905 | Roller for supporting an imaging belt in a printing apparatus A belt photoreceptor in a xerographic printer is entrained on a roller formed from a set of discs. Each disc defines an outer circumference and a flexible main portion. The outer circumferences of a set of discs effectively form a single outer surface of the roller.... | 12/19/2006 |
| 7142799 | Image forming apparatus performing primary image transfer from an image forming means to an intermediate transfer belt and secondary image transfer from the belt to a recording material The present invention relates to an image forming apparatus comprising: an image bearing member; toner image forming means for forming a plurality of toner images on the image bearing member; primary transfer means for superimposing the plurality of toner images on ... | 11/28/2006 |
| 7136611 | Belt device Pulleys 29a, 29b are provided on both ends of the driven roller 28 as separate components from the driven roller 28, and on both edges in the width direction of the transfer belt 24, ribs 24a, 24 | 11/14/2006 |
| 7079790 | Image forming apparatus An image forming apparatus having a belt supporting frame for supporting an intermediate transfer belt is provided. The belt supporting frame may be separable into a plurality of unit bodies. Separation of the plurality of unit bodies may be regulated by a bending m... | 07/18/2006 |
| 7035555 | Apparatus and method for detecting consumable product engagement in a printing device An apparatus for detecting the engagement of a consumable in a printing device includes a consumable cartridge having a rotatable member carried by the cartridge, and a drive member configured to engage and rotate the rotatable member. A proximity sensor positioned ... | 04/25/2006 |
| 7027759 | Apparatus having endless belt with roughened guide An endless belt including an endless body having opposite side edges and an interior surface, and a pair of spaced apart parallel guides bonded to the interior surface of the endless body at positions adjacent to the side edges thereof and extending longitudinally a... | 04/11/2006 |
| 6961118 | Continuous paper feed system A paper handler, in combination with a printer comprising, a paper inlet into that which paper enters the paper handler; where the paper has leading edge. The paper handler further comprises a paper exit where paper exits the paper handler and travels from the paper... | 11/01/2005 |
| 6889021 | Electrophotograpic printing apparatus including a photoreceptor belt having a defined shape Systems consistent with the present invention provide an electrophotographic printing apparatus that includes a group of developing units, a photoreceptor belt having an outer surface, and a group of support members operably disposed to support the movement of the p... | 05/03/2005 |
| 6816691 | Apparatus having endless belt with roughened guide An endless belt including an endless body having opposite side edges and an interior surface, and a pair of spaced apart parallel guides bonded to the interior surface of the endless body at positions adjacent to the side edges thereof and extending longitudinally a... | 11/09/2004 |
| 6766128 | Precision partially cylindrical web guide member and improved manufacturing process for making the same A precision partially cylindrical web guide member for use as a backer bar in electrophotographic printers or as a similar web guide in an apparatus with moving webs. In a novel process of the invention, multiple web guide members may be manufactured from arc segmen... | 07/20/2004 |
| 6751429 | Compliant backer bar A backer bar assembly for supporting a photoreceptor belt, including a substantially rigid first backer bar having first and second ends and a second developer backer bar having first and second ends. The first and second ends of the first backer bar are substantial... | 06/15/2004 |
| 6605399 | Sleeved Photoconductive member and method of making A photoconductive sleeved primary image-forming member roller for use in an electrophotographic machine comprising a central member including a rigid cylindrical core member and a compliant layer formed on the core member; and a flexible, replaceable, rem... | 08/12/2003 |
| 6541171 | Sleeved photoconductive member and method of making A photoconductive sleeved primary image-forming member roller for use in an electrophotographic machine comprising a central member including a rigid cylindrical core member and a compliant layer formed on the core member; and a flexible replaceable remov... | 04/01/2003 |
| 6522850 | Image forming apparatus having supporting member for supporting photosensitive belt In an image forming apparatus that has a photosensitive belt and developing rollers for developing images by bringing the photosensitive belt in contact with the developing rollers when developing images, supporting members are provided for supporting the... | 02/18/2003 |
| 6421513 | Torque assist method and apparatus for reducing photoreceptor belt slippage in a printing machine A belt drive module and a corresponding method includes or employs a belt that moves along a path, at least one support roller or other structure that supports the belt as it moves along the path, a drive roller that effects movement of the belt along the... | 07/16/2002 |
| 6385417 | Holding structure of image holding member in image forming system An image forming unit includes a photosensitive drum as an image holding member for converting an optical image formed via an optical system into a latent image and subsequently depositing a developing material thereon to hold the image. The apparatus als... | 05/07/2002 |
| 6366750 | Mandrel for a photoreceptor belt formed of a rigid machinable foam material A "drelt" photoreceptor particularly for use in high speed production color printers employing a lightweight porous machinable mandrel made of a foam material as a means of mounting a flexible belt photoreceptor on a rigid and lightweight cylindrical base... | 04/02/2002 |
| 6366752 | Spherical silicone additive for reduced photo receptor drag and wear A spherical silicone additive is selected and introduced into a contact region between a photoreceptor's anti-curl layer and an electrophotographic system's backer bar, and into a bulk material of the electrophotographic system's spots blade. The additive... | 04/02/2002 |
| 6311033 | Electrophotographic exposure and development arrangement In the embodiment disclosed in the specification, an electrophotographic exposure and development arrangement has a flexible transparent photoreceptor belt driven between two support rollers and along four printing stations at each of which the photosensi... | 10/30/2001 |
| 6280894 | Imaging apparatus and photoreceptor therefor A photoreceptor for mounting on a drum comprising: a photoreceptor sheet comprising a backing layer, a conductive layer and a photoconductive layer; and an underlayer comprising a layer of cloth.... | 08/28/2001 |
| 6269233 | Liquid developer imaging apparatus having extended photo-conductor life An image forming apparatus using a liquid developer, which can be used for a long time without considering a swelling of a photoconductor material caused by the liquid developer and a heating characteristic of the photo-conductor material, is provided. Th... | 07/31/2001 |
| 6167223 | Photoreceptor drive module A drive module for a photoreceptor in an electrophotographic printing machine. The drive module has retractable features that allow the insertion and removal of the xerographic CRU without causing damage to the photoreceptor and other critical subsystems.... | 12/26/2000 |
| 6055396 | Laser printer having a distance and tension controller A laser printer which includes a photosensitive belt of a loop type having a seam at a portion where the ends overlap. The photosensitive belt circulates around a driving roller, a steering roller and a transfer backing roller, as well as passes between t... | 04/25/2000 |
| 6044240 | Transverse type image forming apparatus A transverse-type image forming apparatus in which a toner image carried on an endless toner image carrying belt is transferred to a printing paper by a transfer facing roller provided inside the toner image carrying belt and caused to move along the prin... | 03/28/2000 |
| 6035161 | Developer backer bar that allows a large amount of photoreceptor wrap with minimal surface contact area for greater axial misalignment A developer backer bar having a surface having a plurality of radii for interfacing with a noncontact developer member. The backer bar is arranged so that it can be retracted for clearance purposes when removing or inserting a xerographic CRU. Upon instal... | 03/07/2000 |
| 6032014 | Method of using an image forming apparatus A plurality of electrostatic images are formed on a moving tensioned belt formed with an electrically conductive base having a non-conductive image-carrying surface layer. The images are developed by passing the belt through toner development stations, ea... | 02/29/2000 |
| 5953565 | Developer backer bar that allows axial misalignment between the backer bar and the developer donor roll A developer backer bar having a substantially flat surface for interfacing with a noncontact developer member. The backer bar is arranged so that it can be retracted for clearance purposes when removing or inserting a xerographic CRU. Upon installation of... | 09/14/1999 |
| 5950051 | Encoding device for a moving web A device for encoding the position of a moving web, particularly a continuous photoreceptor belt in an electrophotographic printing apparatus, incorporates an encoding wheel for engaging an edge portion of the web, in combination with a long support membe... | 09/07/1999 |
| 5724640 | Floating backer and mount for cleaning blades and spots blades on belt imaging surfaces An apparatus for cleaning particles from a surface using a floating backer and cleaning or spots blade mounted to allow freedom to follow the location of the imaging surface. The cleaning or spots blade controls tolerances when the blade and the floating ... | 03/03/1998 |
| 5708924 | Customer replaceable photoreceptor belt module A customer replaceable unit includes a cover and support structure for supporting a photoreceptor belt while it is packaged, shipped and inserted over drive and idler rolls in a machine. It prevents a machine operator from having to handle the belt itself... | 01/13/1998 |
| 5671467 | Color image-forming apparatus adapted to stabilize contact between endless belt-like photosensitive medium and developing roller A color image-forming apparatus includes an endless belt-like photosensitive member stretched between and wound around a drive roller and a driven roller, and a plurality of developing rollers making contact with an outer surface of the photosensitive mem... | 09/23/1997 |
| 5659850 | Exchangeable photoreceptive sheet and method and system for using the same A photoreceptive sheet within an imaging apparatus is repeatedly transportable through a transport path and capable of capturing and transferring images. In addition, the photoreceptive sheet is repeatedly transportable for capturing and transferring a nu... | 08/19/1997 |
| 5652648 | Negative wrap back up roll adjacent the transfer nip An apparatus for developing a latent image recorded in a surface of a flexible photoconductive member. The apparatus includes a developer unit having a developer roll and a backing member. The roll is positioned opposed from the surface of the flexible ph... | 07/29/1997 |
