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| Number | Title | Issue Date |
| 8190062 | Image forming apparatus with an image carrier including a light emitting element layer In an image forming apparatus that includes an image carrier, a charging unit, a latent-image forming unit that forms a latent image for each color by exposing the surface of the image carrier charged by the charging unit, and a plurality of developing units that se... | 05/29/2012 |
| 8175499 | Image forming apparatus with a plurality of image forming units An image forming apparatus includes a first image forming unit for forming a color developer image using color developer; a second image forming unit for forming a transparent developer image using transparent developer; a transfer unit for transferring the transpar... | 05/08/2012 |
| 8155563 | Image forming apparatus having print engine which prints position-coding pattern with specific developing material An image forming apparatus is capable of printing a position-coding pattern. A first print engine prints a position-coding pattern and holds a first developer material therein. A plurality of second print engines each print a corresponding image in accordance with p... | 04/10/2012 |
| 8116664 | Image forming apparatus with member for switching between driving force modes An image forming apparatus forming a color image on a recording material mounts black and non-black process cartridges including a photosensitive drum and a developing roller and includes a driving source; first and second clutches connecting and disconnecting the d... | 02/14/2012 |
| 8092962 | Image forming apparatus and image forming method The present invention relates to an image forming apparatus 1 including a photosensitive member 2 on which an electrostatic latent image is formed according to an image signal, a development mechanism 5 for forming a toner image by developing th... | 01/10/2012 |
| 8068769 | Toner usage control between differing image regions A control part provides a first region in which an image is formed on an image carrier using only a dark-color toner. The control part provides a second region, which is adjacent to the first region, in which an image is formed using a dark-color toner and a light-c... | 11/29/2011 |
| 8041264 | Multiple-channeled layer printing by electrography Electrographic printing of one or more multi-channeled layers having a particular pattern by electrographic techniques. Such electrographic printing includes the steps of forming a desired print image, electrographically, on a receiver member utilizing predetermined... | 10/18/2011 |
| 8007969 | Tri-level xerography for hypochromatic colorants A xerogrpahic system and method use a tri-level development process in which at least one xerographic imaging unit includes a photoreceptor and a pair of developer units. A first developer unit includes a conventional first toner of a given color (CYMK) and a second... | 08/30/2011 |
| 7991328 | Image forming apparatus with a plurality of image forming units An image forming apparatus includes a plurality of image forming units for forming a developer image on an image supporting member; a transfer unit for transferring and overlapping the developer image on a medium to form a developer laminated portion; and a fixing u... | 08/02/2011 |
| 7885580 | Image forming apparatus, and developing device and developing unit thereof An image forming apparatus includes developing units designed to have an appropriate developer storage capacity in consideration of developer consumption, and improved convenience of use. The image forming apparatus also includes an image carrier, and plural develop... | 02/08/2011 |
| 7835670 | Image forming apparatus reducing background contamination An image forming device includes a plurality of image forming units provided in parallel comprising a black image forming unit to form a black toner image and a plurality of color image forming units to form color toner images, an intermediate transfer device to pri... | 11/16/2010 |
| 7826772 | Image forming apparatus using color toner and transparent toner An image forming apparatus includes a developing apparatus for developing an electrostatic image with a developer comprising at least a toner and a first external additive, the developing apparatus including a plurality of developing devices, containing toners diffe... | 11/02/2010 |
| 7822366 | Image forming apparatus and developing unit thereof An image forming apparatus to enhance a user's convenience by adequately designing developer storage capacities of developing devices in consideration of an amount of consumed developer includes an image carrier, and plural developing devices arranged along a rotati... | 10/26/2010 |
| 7817941 | Color image forming apparatus having developing devices with different storage capacities In a color image forming apparatus comprising a plurality of developing devices each provided with a developing roller structured with a developing sleeve and a fixed magnetic pole member, an agitating member, a recovering and feeding member, a regulating member and... | 10/19/2010 |
| 7773915 | Image forming apparatus having an image bearing member and a transparent toner developer bearing member that rotates in the same direction An image forming apparatus having a plurality of image bearing members, a plurality of colored toner developing units, and a transparent toner developing unit. Each colored toner developing unit has a developer bearing member. The rotational direction of the develop... | 08/10/2010 |
| 7761036 | Image forming apparatus and power transmission unit thereof An image forming apparatus including: a driven rotational body that is detachable from the image forming apparatus and includes a driven connecting part; a transmission member that receives a rotational power and includes a driving connecting part provided along a d... | 07/20/2010 |
| 7751756 | Color image forming method and color image forming apparatus There is provided a color image forming apparatus which is capable of preventing fogging, and decrease of a transfer efficiency of a toner image onto a recording medium when forming a color image, and stably forming a high-definition color image excellent in a color... | 07/06/2010 |
| 7745080 | Color image forming developer, color image forming method, and color image forming device The present invention provides a color image forming developer comprising yellow, magenta, and cyan toners each containing an infrared absorber, wherein the cyan toner has a maximum infrared absorbance in the infrared region lower than that of the magenta toner and ... | 06/29/2010 |
| 7734225 | Tri-level tandem xerographic architecture using reduced strength toner A xerographic system and method use a tri-level development process in which at least one xerographic imaging unit includes a photoreceptor and a pair of developer units. A first developer unit includes a full strength toner of a given color and a second developer u... | 06/08/2010 |
| 7702259 | Multi-pass image forming apparatus and image forming method using the same for providing plural print modes with different numbers of passes depending on desired print speed and image quality Provided are a multi-pass image forming apparatus and an image forming method using the same. The multi-pass image forming apparatus includes a plurality of developers for forming a plurality of electrostatic latent images using toners having different polarities an... | 04/20/2010 |
| 7693460 | Image forming apparatus An image forming apparatus is provided which includes a switching mechanism which selectively shifts developing rollers among an all-color non-contact state in which all photosensitive members are kept apart from the corresponding developing rollers, a black contact... | 04/06/2010 |
| 7672616 | Toner usage control between differing image regions A control part provides a first region in which an image is formed on an image carrier using only a dark-color toner. The control part provides a second region, which is adjacent to the first region, in which an image is formed using a dark-color toner and a light-c... | 03/02/2010 |
| 7666564 | Method for forming image Disclosed is an image forming method employing an apparatus comprising a plurality of toner image forming units, which forms a plurality of toner images and transfer them onto an intermediate transferring member in sequence, and the transferred images is transferred... | 02/23/2010 |
| 7668485 | Image forming apparatus An image forming apparatus includes an image forming structure including an image carrier that carries an image and an optical writing device that writes a latent image onto the image carrier in an integral arrangement; plural development devices that develop a late... | 02/23/2010 |
| 7636534 | Method and device for printing individual sheets with first and second printing groups and an inverter device In a method and system for printing, individual pages of a print medium are transported. With a printing unit, a side of the respective individual page facing it is printed and the applied toner image is fixed. With an inverter, the individual pages with the fixed t... | 12/22/2009 |
| 7623814 | Single-pass bypass printing method and apparatus A single-pass bypass printing machine including: (a) a moveable photoreceptor belt for moving through an imaging path; (b) apparatus for supplying and feeding print media along a main media path and a bypass media path; (c) a first stage including at least three ima... | 11/24/2009 |
| 7616917 | Multiple-channeled layer printing by electrography Electrographic printing of one or more multi-channeled layers having a particular pattern by electrographic techniques. Such electrographic printing includes the steps of forming a desired print image, electrographically, on a receiver member utilizing predetermined... | 11/10/2009 |
| 7603064 | Unit for tone-processing image data using screen pattern with different screen angles for toners of same hue and different density The electrophotographic image recording apparatus includes a photoconductive image bearing member, a charging unit, an exposure unit, developing means, a transferring unit suited to superimpose and transfer the plural kinds of toner images obtained by the developing... | 10/13/2009 |
| 7596345 | Image forming apparatus with a developer comprising at least a toner and a first external additive An image forming apparatus includes a developing apparatus for developing an electrostatic image with a developer comprising at least a toner and a first external additive, the developing apparatus including a plurality of developing devices, containing toners diffe... | 09/29/2009 |
| 7567772 | Color printer apparatus By using an embodiment of the invention, an image forming apparatus capable of reducing time required until an image output of a single color frequently used for image formation is outputted and capable of increasing a toner volume used for the image output of the s... | 07/28/2009 |
| 7558512 | Toner cartridge and electrophotographic printer employing the same A toner cartridge horizontally installed in an electrophotographic printer having a photoreceptor drum where an electrostatic latent image is formed by charging and exposure, and contributing to toner supply and development by being fixedly coupled to in the electro... | 07/07/2009 |
| 7555244 | Image forming apparatus with a latent image writing unit positioned and biased against positioning errors In an image forming apparatus, a photoreceptor carries a latent image on its looped surface. An optical writing unit moves between an operating position at which writing of a latent image is performed on the looped surface of the photoreceptor and a standby position... | 06/30/2009 |
| 7522864 | Image forming apparatus and image forming method In an image forming apparatus of the present invention, a developing unit for magenta contains magenta-type toner for pseudo full-color image forming whose chromaticity point is shifted closer to yellow hue on a chromaticity diagram, in comparison with genuine-magen... | 04/21/2009 |
| 7509077 | Method and printing machine used for printing with the use of toner Printing with the use of toner, in particular, for electrophotographic printing, wherein a printing machine set up for multi-color printing and includes several imaging stations or printing units is provided with at least two black toners in two imaging stations or ... | 03/24/2009 |
| 7489890 | Color image forming apparatus with differing toner time constants A color image forming apparatus includes: a multiple number of process printing units, each having a photoreceptor drum for forming a toner image with a toner corresponding to color-separated image information for each color and a developing unit for supplying the t... | 02/10/2009 |
| 7460817 | Image forming apparatus An image forming apparatus includes a plurality of developing portions capable of developing electrostatic latent images formed on an image bearing member, and a control portion for executing preparation operations for developing operations with respect to each of t... | 12/02/2008 |
| 7450888 | Image forming apparatus and method of detecting home position error by sensing an indicating unit An image forming apparatus and a method of detecting a home position error are provided. The image forming apparatus includes a plurality of developing units, a cam shaft, and a plurality of cams that are formed on the cam shaft to correspond to the respective devel... | 11/11/2008 |
| 7430389 | Image forming apparatus with transparent toner developer An image forming apparatus includes a first image bearing member; a first developing means forming a toner image of transparent toner on an electrostatic latent image formed on the first image bearing member; a second image bearing member having an electrostatic cap... | 09/30/2008 |
| 7421231 | Image forming apparatus An image forming apparatus which improves uneven gloss occurring at the step of fixing a transparent toner is provided with an image bearing member on which a latent image is formed, a transparent toner image forming device for forming a transparent toner image on t... | 09/02/2008 |
| 7416826 | Color toner for electrophotography and color toner set for electrophotography using the same, color developer for electrophotography, method for forming color image, and apparatus for forming color image A color toner for electrophotography having excellent fixability and void resistance is capable of forming a high-quality image. The color toner for electrophotography comprises a binder resin and is a magenta toner, and used in combination with at least any of yell... | 08/26/2008 |
