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| Number | Title | Issue Date |
| 7395010 | Image forming apparatus that permits adjustment of a distance between a light source and a photoconductor An image forming apparatus has a charge removing unit (31) between a transfer roller (11) for transferring a toner image from a surface of a photosensitive drum (4) to a transfer member and a charging unit (3) for electrostatically chargi... | 07/01/2008 |
| 7350712 | Image sensor module architecture Image sensor module architecture provides flexible mounting of illuminators in an imaging apparatus with flexible fasteners. The architecture involves one or more LED-based illuminators that may be mounted adjustably to provide high intensity and uniform profile lum... | 04/01/2008 |
| 7330692 | Electricity waste suppressing original document size detection apparatus An original document reading apparatus includes a plurality of point light source elements (e.g. a LED array) in a main scanning direction beneath an original document table, a moving device that moves the point light source elements in a sub scanning direction, and... | 02/12/2008 |
| 7253930 | Scanner drive system A drive system for an optical imaging head assembly of a scanner includes a rack having a first side and a second side opposite the first side, the first side including a toothed surface and the second side including a guide surface, a pinion engaged with the toothe... | 08/07/2007 |
| 7245851 | Electrophotographic apparatus In an electrophotographic apparatus having a blue (purple) semiconductor laser as a light source, the electrophotographic apparatus has an electrophotographic photosensitive member, a charging means, an exposure means, a developing means, a transfer means and a dest... | 07/17/2007 |
| 7224915 | Image forming apparatus and image forming unit An image forming apparatus comprising: an image forming section and a residual toner amount detection unit. The image forming section includes a photosensitive member, a charging unit, an exposure unit, a developing unit, and a toner storage unit. The residual toner... | 05/29/2007 |
| 7081912 | Optical writing head such as organic EL array exposure head, method of manufacturing the same, and image forming apparatus using the same The present invention relates to a small optical writing head, such as an organic EL array exposure head, having long work distance with little crosstalk, a method of manufacturing the same, and an image forming apparatus using the same. The optical writing head is ... | 07/25/2006 |
| 7042591 | Image exposure apparatus and image forming apparatus The present invention provides an image exposure apparatus which has a light emitting chip including a plurality of light emitting elements, a base plate for mounting the chip thereon, a lens for imaging light emitted from the plurality of light emitting elements on... | 05/09/2006 |
| 6967791 | Illumination systems and methods System and method for illuminating a target area with a desired illumination pattern. According to preferred embodiments of the invention, a cartridge-engaging assembly may be positioned adjacent a data cartridge, light may be emitted from at least one light source ... | 11/22/2005 |
| 6658225 | Non-uniform pre-charge erase array with relatively uniform output An image forming system including a charge pre-charge erase array system that includes a plurality of pint light sources that emit a band of light onto a photoreceptor. The plurality of point light sources are variably spaced to substantially uniformly il... | 12/02/2003 |
| 6330413 | Image forming apparatus having an LED charge erasing device An image forming apparatus includes a photosensitive member drum, a charging device for charging the photosensitive member drum, an image exposure device for image-exposing the photosensitive member drum, and an electric charge erasing device for erasing ... | 12/11/2001 |
| 5884125 | Light emitting element control device, optical sensor control device and blank lamp control device A control circuit for outputting a signal for controlling an amount of light emitted from a plurality of light emitting elements. The control circuit includes a controller or CPU, and a D/A converter outputting a signal for setting a voltage in multiple g... | 03/16/1999 |
| 5848335 | Internal erase before last development in color electrophotographic printing A multistation color electrophotographic printer having an erase lamp located opposed to or before the last physical developer housing, but after the first physical developer housing.... | 12/08/1998 |
| 5604571 | Image- forming apparatus having imaging x-ray generation means An image-forming apparatus which does not unfavorably influence its surrounding environment when in use and is excellent in durability of use and safety is provided. In the image-forming apparatus, a photosensitive layer is disposed on the outer surface o... | 02/18/1997 |
| 5559580 | Image forming apparatus having a bipolar photosensitive member In a microfilm reader printer, a photosensitive member which can be charged to be positive and negative. The photosensitive member is charged to be positive in a reverse development mode and charged to be negative in a normal development mode. In the reve... | 09/24/1996 |
| 5530524 | Electrophotographic apparatus with photosensitive drum requiring multiple rotations for production of a copy image on one sheet and method of operating same A compact electrophotographic apparatus is attained by decreasing the diameter of the photosensitive drum so that a plurality of rotations of the drum are required to produce a single sheet image. Images of excellent quality, especially with respect to th... | 06/25/1996 |
| 5506662 | Image forming apparatus including an image bearing member and an erasing device for erasing a portion of an image from the image bearing member The copying machine has a charge partially erasing device for limiting a region of the photosensitive drum, in which an electrostatic latent image can be formed. The charge partially erasing device includes a plurality of LED elements arranged in the dire... | 04/09/1996 |
| 5450174 | Lamp protective cover A lamp system for erasing an electrically charged photoconductive surface including an optically transmissive protective cover fabricated from a polypropylene adhesive tape for being affixed to a segmented surface so as to eliminate exposed gaps in which ... | 09/12/1995 |
| 5392098 | Electrophotographic apparatus with amorphous silicon-carbon photosensitive member driven relative to light source An electrophotographic apparatus includes an amorphous silicon electrophotographic photosensitive member thereon having a conductive base, a photoconductive layer thereon containing carbon atoms, a content of which is minimum adjacent a position closest t... | 02/21/1995 |
| 5300985 | Multi-function erase lamp A multi-function, multi-segment ac plasma erase lamp is provided to selectively erase previously charged areas of a photoconductive member. The lamp performs the conventional erase function of fixed edge erase, edge shift and patch generation, while addin... | 04/05/1994 |
| 5257072 | Discharging device for copying apparatus A neutralizer for use in an image forming apparatus for eliminating an electric charge from a non-image area in a surface of an image carrying member has an array of light emitting elements, a shift register and a driving device. The light emitting elemen... | 10/26/1993 |
| 5200837 | Digital copier including means for erasing digital image data over a given area, especially suitable for preventing jamming of paper A digital copier for recording image data representative of a document image on a paper sheet by digitally processing the image data and capable of forming a blank area in a leading edge portion of the paper sheet to prevent the sheet from wrapping round ... | 04/06/1993 |
| 5150156 | Electrostatic image recording machine capable of multiple gradations An image recording machine for producing a high quality image both in a text part and in a photograph part, i.e., a crisp (low gradation) image in a text part and a gentle (high gradation) image in a photograph part. The gradation characteristic is altere... | 09/22/1992 |
| 5065188 | Charge-eliminating apparatus of copier A charge eliminating device for use with a photoreceptor drum. The device eliminates a charge on a required portion of the surface of a photoreceptor drum so that an electrostatic latent image is eliminated on the required portion. The device includes a c... | 11/12/1991 |
| 5030992 | Device for removing electrostatic charge in image forming apparatus Improvements in a device for removing the electrostatic charge on a photoconductor in an image forming apparatus. The electrostatic charge-removing device has a plurality of light-emitting diodes (LEDs) incorporated in a case. The LEDs emit diffuse light ... | 07/09/1991 |
| 5001500 | Endless belt printing apparatus A method and apparatus for the automatic production of business forms, wallpaper, newspapers or the like from a web of continuous printing material comprises an endless movable belt having at least one printing station. An image is projected to a surface ... | 03/19/1991 |
| 4975348 | Image highlighting method An electrophotographic copying process produces a photocopy having a negative image in order to highlight information in a specified area. An original image is radiated onto a photosensitive medium to form a first image. A solid block is formed in the spe... | 12/04/1990 |
| 4972228 | Image forming apparatus with selective erase An image forming apparatus is disclosed that provide a selective erase feature that enables an operator to block or erase a portion of an original image to be reproduced. The apparatus includes a control unit that generates a set of erase characters based... | 11/20/1990 |
| 4970562 | Color image processing apparatus A color image processing apparatus in which a latent image corresponding to one of the color components of an original document is recorded on an image receiving member. The original document is scanned and a plurality of color components of the original ... | 11/13/1990 |
| 4963933 | LED illuminator bar for copier An erase bar for a xerographic printer, copier or the like has a row of light emitting diodes for illuminating a row of pixels across the photosensitive medium of the printer. Each LED is located in the bottom of a cavity. Next to the bottom of the cavity... | 10/16/1990 |
| 4884107 | Image forming apparatus for blanking portions of a document An image forming apparatus having an image carrier, a document table on which a document is placed, and a document feeder associated with the document table for feeding and document onto the document table, the document feeder including a document carrier... | 11/28/1989 |
| 4843427 | Selective charge removal system for copier A selective charge removal system for a copier uses a transparent electrochromic display with many segments or dots thereon and a back-lighting unit such that only a specified area which is precisely defined on the photosensitive body of the copier is exp... | 06/27/1989 |
| 4827315 | Printing press Method and apparatus for automatic production of business forms. An image including character data to be included in the form are projected onto a photoconductive surface of a printing cylinder by a plurality of lasers. Toner, in the form of finely graine... | 05/02/1989 |
| 4799080 | Electrophotographic copying machine having editorial function An electrophotographic copying machine having an editorial function includes an original table formed on the top surface of a main unit, and an original is placed thereon while facing upward. A shaft is installed in the vicinity of one end of the top surf... | 01/17/1989 |
| 4734734 | Image forming apparatus and erasure illumination device therefor An image forming apparatus includes a movable image bearing member; a charger for electrically charging the image bearing member; developing device for developing an electrostatic latent image formed on the image bearing member; illumination device dispos... | 03/29/1988 |
| 4728982 | Image forming apparatus An image forming apparatus provided with a blank exposure device. The blank exposure device includes a plurality of light sources, each of which exhibits a light directivity. The light emitted from the directive portion is effective to electrically discha... | 03/01/1988 |
| 4708464 | Device for erasing unnecessary images for use in reader-printers Disclosed is a reader-printer being capable of erasing a frame surrounding margin of a microfilm and unnecessary image portion in the frame. The reader-printer comprises first flap member, second flap member which are disposed adjacent to a slit and movab... | 11/24/1987 |
| 4585330 | Unnecessary charge removing device from a latent image bearing element of electrophotographic copying machine An electrophotographic copying machine includes a device for removing charges of portions of a latent image bearing element which are unnecessary for forming a latent image. The device includes a light source, the latent image bearing element, and a light... | 04/29/1986 |
| 4582417 | Apparatus for forming images An image-forming apparatus is disclosed which is able to form an image while blanking any unnecessary image portion or extracting any desired image portion at one's will. To this end, the apparatus includes a plurality of light exposing means, an image ar... | 04/15/1986 |
| 4576464 | Charge eliminating lamp device A charge eliminating lamp device, for use in an electrostatic copying apparatus, comprising a light shielding frame member having a light transmission opening formed on that surface which faces the surface of an electrostatographic material, a plurality o... | 03/18/1986 |
