Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7639970 | Optimization of magnetic roll speed profile in an electrophotographic printing system A control system for use with a development process including at least one magnetic roll with a settable speed is provided. The controller is directly or indirectly responsive to a reload feedback signal, which signal is generated in response to changes in output re... | 12/29/2009 |
| 7466943 | Image forming apparatus comprising a developer roller A control part 33 rotates a developer roller 21a at a second rotation speed, which is slower than a normal rotation speed during an image formation period (first rotation speed), during a non-image formation period while a heater 14 is in... | 12/16/2008 |
| 7317889 | Image forming apparatus wherein a speed of a developed carrying member is controlled relative to a speed of an image bearing member An image forming apparatus includes a rotatable image bearing member bearing an electrostatic image; a rotatable developer carrying member carrying a developer to develop the electrostatic image; speed controlling means for switching a rotating speed of the image be... | 01/08/2008 |
| 7298984 | Image forming apparatus and developer control method An image forming apparatus includes a developer that develops a latent image to form an image, a separation unit that separates image information of a job image by color upon writing a latent image of the job image, a comparison unit that compares the image informat... | 11/20/2007 |
| 7263318 | Image forming apparatus including an index feature for extending the life of a photosensitive member The image forming apparatus has an electrophotographic photosensitive member and a developing device for using a developer including toner and carrier, wherein the developing device develops an electrostatic image on a photosensitive member by putting the developer ... | 08/28/2007 |
| 7221892 | Developing device used in image forming device A developing device includes a removing roller positioned vertically above a supplying roller and in contact with a developing roller. Positively charged toner is supplied from the supplying roller to the developing roller and then supplied to a photosensitive drum ... | 05/22/2007 |
| 7155150 | Method and apparatus for developing a latent image using toner grains constituting a developer A method of developing a latent image formed on a surface of an image carrier with toner grains, which constitute a developer together with magnetic carrier grains for supporting the toner grains, by depositing the developer on a developer carrier, which faces the i... | 12/26/2006 |
| 7099612 | Toner cartridge used with electrophotographic image forming apparatus A toner cartridge used with an electrophotographic image forming apparatus includes a developing roller that develops an electrostatic latent image formed on an outer circumferential surface of a photosensitive drum, a toner supplying roller that supplies toner onto... | 08/29/2006 |
| 7060350 | COMPOSITE MAGNETIC MATERIAL AND MAGNETIC MOLDING MATERIAL, MAGNETIC POWDER COMPRESSION MOLDING MATERIAL, AND MAGNETIC PAINT USING THE COMPOSITE MAGNETIC MATERIAL, COMPOSITE DIELECTRIC MATERIAL AND MOLDING MATERIAL, POWDER COMPRESSION MOLDING MATERIAL, PAINT, PREPREG, AND SUBSTRATE USING THE COMPOSITE DIELECTRIC MATERIAL, AND ELECTRONIC PART A composite magnetic material including a resin and generally spherical magnetic metal particles of at least one type dispersed in the resin and consisting essentially of single crystal grains, the metal particles having a mean particle size of 0.1 to 10 μm and eac... | 06/13/2006 |
| 6701114 | Image forming apparatus and image forming process unit with developer carried on a developer carrier An image forming apparatus of the present invention includes a developing device including a rotatable, nonmagnetic developer carrier and a magnetic field forming device. In a developing region where the developer carrier faces an image carrier, the magne... | 03/02/2004 |
| 6643484 | Image forming apparatus including image bearing member rotatable at different peripheral velocities An image forming apparatus includes an image bearing member and a developer carrying member, which carries a developer to develop an electrostatic image formed on the image bearing member with the developer. In a non-developmental time period, a periphera... | 11/04/2003 |
| 6539183 | Image forming apparatus for normal and thick print media An image-forming apparatus includes a developing roller and a developing blade. The developing blade applies toner to the developing roller to form a thin layer of toner on the developing roller. The image-forming apparatus performs a printing operation t... | 03/25/2003 |
| 6489073 | Method and device for developing electrostatic latent images Electrostatic latent images are developed with a toner in such a configuration that an electrostatic-latent-image-bearing member is disposed to face a developer-bearing member which bears thereon a developer consisting of a magnetic carrier and a toner by... | 12/03/2002 |
| 6374065 | Speed ratio between an image holding member and a developer carrier varies according to an image ratio An image forming apparatus is capable of improving throughput, preventing deterioration of developer and preventing shortening of the life of a developing apparatus. In the image forming apparatus, an image holding member holds an electrostatic latent ima... | 04/16/2002 |
| 6178303 | Contact depth controlling roller mechanism A developing apparatus includes: a first rotary member; a second rotary member having an elastic surface and adapted to be rotated in contact with the first rotary member. A contact depth controlling roller is kept in rotative free engagement with each en... | 01/23/2001 |
| 6016411 | Efficient development of an electrostatic latent image A developing apparatus comprises a development housing containing developer and disposed opposite to a carrier for carrying a latent image, and a developing roller rotatably provided in the development housing and rotatively driven in a predetermined dire... | 01/18/2000 |
| 5999779 | Developing device for an image forming apparatus A developing device for developing a latent image electrostatically formed on an image carrier includes an endless developing belt, and an applicator roller for applying a viscous developing liquid consisting of a dielectric carrier liquid and toner dispe... | 12/07/1999 |
| 5887231 | Developing device and image forming apparatus A developing device is provided with: a developing roller for performing an electro-photography on a photosensitive body by using charged toners; a supplying roller for supplying the toners to the developing roller, the supplying roller being pushed again... | 03/23/1999 |
| 5839034 | Image forming device having a photosensitive drum and developing roller that rotate in the same direction An image forming device for forming images on a sheet transported along a sheet-transport pathway from a sheet supply tray to a sheet discharge unit includes a photo-sensitive drum rotated in a predetermined rotational direction at a predetermined periphe... | 11/17/1998 |
| 5839021 | Developing unit for an electrophotographic printer employing a supply roller for transferring toner to a developing roller The developing unit of an electrostatic printer is designed to avoid under-development of the bottom part of a dark latent image due to a reduction in recycled toner. This can be accomplished by providing the developing unit with one developing roller and... | 11/17/1998 |
| 5749031 | Developing apparatus in use with an image forming apparatus A developer in use with an image forming apparatus. The developer includes: a developing sleeve which rotates and holds toner on itself so as to develop a latent image on a photoreceptor with the toner; a driving motor for generating a rotational driving ... | 05/05/1998 |
| 5724634 | Image forming device in which developer roller speed is controlled in developer transfer to a photoconductive drum An image forming device including a photosensitive drum having a first motor disposed to rotate the photosensitive drum at a speed Vp; an optical unit disposed to create a charged pattern corresponding to an original image on the photosensitive drum; a re... | 03/03/1998 |
| 5628043 | Image forming apparatus An image forming apparatus including an image transport member driven to rotate with a latent image formed on a surface thereof, and a toner transport member driven to rotate with toner attached thereto for developing the latent image and in contact with ... | 05/06/1997 |
| 5557379 | Image forming apparatus having a toner conveyance regulator A developing device for use in an image forming apparatus comprising a toner hopper containing toner, a developing roller for developing an electrophotographic latent image formed on a surface of a photosensitive member using the toner contained in the to... | 09/17/1996 |
| 5440377 | Apparatus for controlling speed of a developing roller as it engages a photoreceptor A developing device is provided with a clutch to engage or disengage between a sleeve and a driving motor. When the developing device is used for development, spacing rollers on the sleeve are brought in contact with a photoreceptor drum and the speed of ... | 08/08/1995 |
| 5369478 | Developing apparatus A developing apparatus includes a rotatable developer carrying member for carrying one component developer to a developing zone for developing an electrostatic latent image for an image bearing member; a regulating member for regulating a thickness of a l... | 11/29/1994 |
| 5321475 | Color image forming apparatus which accelerates or decelerates the developing sleeves at a constant rate A color image forming apparatus has a plurality of developing units each including a developing sleeve and storing a developer of particular color. The developing sleeve is located to face a photoconductive element or similar image carrier. When the suppl... | 06/14/1994 |
| 5319418 | Image forming apparatus A gear power transfer mechanism for driving a developing unit in an image forming apparatus wherein the developing unit is selectively located closely to and separated from a photoconductive drum unit in conjunction with opening and closing operations of ... | 06/07/1994 |
| 5300987 | Image forming apparatus which reduces or eliminates density irregularity due to thermal deformation of a developing sleeve An image bearing member of an image forming apparatus is heated both during an image forming operation and during an inoperative condition. At least two developing sleeves are opposed to the image bearing member. An angular difference between an angle by ... | 04/05/1994 |
| 5239342 | Method of developing an electrostatic latent image utilizing a two-component developer comprising a magnetic carrier and a toner The present invention provides a developing method which comprises transferring a two-component developer comprising a magnetic carrier and a toner from a sleeve to a development area and developing a latent electrostatic image on a latent electrostatic i... | 08/24/1993 |
| 5239345 | Image forming apparatus having function of dust removal An image forming device for printing images on sheets of material includes a photosensitive member for carrying a latent image thereon, a developing roller rotatably disposed adjacent to the photosensitive member for supplying a layer of toner to the phot... | 08/24/1993 |
| 5223668 | Single component developing device with velocity of roller dependent on time constant of circuit formed by resistor layer of developer carrying member and photosensitive drum A developing device of one-component developing type for use in the electrophotographic copying machine capable of developing latent image on the image carrier. The device comprises a developer carrying member having resistor layer on its surface layer, a... | 06/29/1993 |
| 5157443 | Moving belt liquid development method and device A method and apparatus is disclosed for an improved liquid development system for a high speed reproducing machine having a movable image retention belt. The liquid development system comprising a moving belt applicator mounted on a drive assembly contain... | 10/20/1992 |
| 5133283 | Developer unit A developer unit which includes a developer tank housing a developing roller including a sleeve and a magnet member both rotatable, wherein the magnet member is rotated longer than the sleeve, and wherein the rotating direction of the magnet member is opp... | 07/28/1992 |
| 5078088 | Roller type liquid developing apparatus A roller type liquid developing apparatus includes a developing solution tank for storing a developing solution in which charged fine color particles are dispersed, a developing head for applying the developing solution stored in the developing tank to a ... | 01/07/1992 |
| 5078085 | Developing process Disclosed is a developing process using a two-component type developer comprising a magnetic carrier and a toner, in which the developing conditions of the two-component type developer, that is, the composition and density of the developer in a distance b... | 01/07/1992 |
| 5038176 | Image forming apparatus having plural magnetic brush developing devices An image forming apparatus having plural developing devices, comprising: a photosensitive member arranged rotatably in one direction and holding an electrostatic latent image corresponding to an original image; a developing sleeve rotatably arranged in ea... | 08/06/1991 |
| 5036364 | Image forming apparatus including developer carrying member having repelling magnetic brush An image forming apparatus is provided with an electrostatic latent image forming member disposed on an image bearing member and developing member for developing the latent image. A developer carring member is rotatable in a first direction to carry a dev... | 07/30/1991 |
| 5024181 | Method for the development of an electrostatic latent image A method of forming a multicolor toner image on an electrostatic latent image carrying member wherein developer containing a carrier and toner is transported to a developing region on a cylindrically shaped outer sleeve member of a developer transporting ... | 06/18/1991 |
| 4811686 | Developing device of an electrophotographic machine A developing device of an electrophotographic apparatus comprising a light-sensitive member for forming an electrostatic latent image, a developing roller comprising a magnetic roller and a sleeve, the developing roller supplying a developer which is to b... | 03/14/1989 |
