Class 399/344 - Color

Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein an arrangement is provided for separately
No. of patents: 26
Last issue date: 06/17/2008

Number	Title	Issue Date
7388595	Fixing device and temperature control method As a cooling mechanism that cools the entire paper passage area of a heat-producing belt, a rotational drive method of the heat-producing belt is employed and the heat-producing belt is cooled by rotational cooling by being made to idle when paper is not being passe...	06/17/2008
7366457	Color image forming apparatus having toner recycling The image forming apparatus having a plurality of developing devices corresponding to a plurality of colors includes at least a predetermined color for developing an electrostatic image as toner images, an image bearing member bearing thereon the toner images develo...	04/29/2008
7315723	Method and apparatus for image forming capable of effectively transporting toner An image forming apparatus includes a photoconductor, a cleaning device, and a toner transporting device. The photoconductor has a toner image formed thereon. The cleaning device removes toner remaining on the photoconductor. The toner transporting device transports...	01/01/2008
7313343	Image forming apparatus An electrostatic latent image is formed on a rotary image carrier. A developer is provided with at least one developing roller which is separatably abutted on the image carrier at a developing position to supply toner onto the image carrier to make the latent image ...	12/25/2007
6962557	Device for welding plastic films Devices for cross-welding or cross-separating welding plastic films (2) are used in a manner known per se in machines for producing bags, said devices comprising a welding roller (3) and a heated welder terminal (4) which can be moved reciprocal...	11/08/2005
6922538	Image forming apparatus including a heat shielding device An image forming apparatus includes an image forming device that forms a toner image on a recording medium, a heat fixing device provided adjacent to the image forming device to fix the toner image onto the recording medium by heat, and a heat shielding device that ...	07/26/2005
6721534	Image formation method and image formation apparatus Toners resided after transferring toner images on a photosensitive member are collected and reused as recycled toners once returned to developing devices. A mixture ratio of the recycled toner to a specific color toner in each of the developing devices is controlled...	04/13/2004
5946538	Image forming apparatus An image forming apparatus includes an image bearing member for carrying toner images of different colors; a rotatable intermediary transfer member to which the toner images are superimposedly transferred from said image bearing member onto said intermedi...	08/31/1999
5864741	Single brush cleaner with collection roll and ultrasonic cleaning assist An apparatus for efficient cleaning of the imaging surface. The primary cleaner is a rotating collection roll located directly opposite from and on the other side of the imaging surface from the ultrasonic cleaning assist device. The ultrasonic energy is ...	01/26/1999
5765087	Color image forming method and color image forming apparatus practicable therewith The color image forming method of the kind sequentially forming toner images of different colors on an image carrier with developers of corresponding colors stored in a plurality of developing devices, sequentially transferring the toner images to a singl...	06/09/1998
5493381	Optimizing preclean corona current for cleaning multiple toners A method and apparatus for adjusting the preclean corona current used in a printer or digital copier such that the preclean corona current is optimized for the dominant color entering the cleaner....	02/20/1996
5442430	Color image forming apparatus and cleaning device therefor A color image forming apparatus and a cleaning device therefor are disclosed. Toner of different colors left on a photoconductive element image transfer are sequentially collected by respective cleaning units. A recycling mechanism, including conveyor scr...	08/15/1995
5400129	Optimizing cleaner bias for cleaning multiple toners A method and apparatus for adjusting the bias of a cleaner used in a printer or digital copier such that the cleaner bias is optimized for the dominant color entering the cleaner....	03/21/1995
5296897	Image forming apparatus for forming multi-image on transfer sheet with plural color toners The present invention aims to improve the image forming efficiency by selecting positions where image adjusting toner images are formed to non-image areas of convey means by changing the supply timing of a transfer sheet onto the convey means, in an image...	03/22/1994
5115280	Residual toner cleaning apparatus for color image forming device The present invention relates to a color copying apparatus which prevents toner scattering from a tip portion of a cleaner to an image area of an image carrying drum. An exposing device forms a stripe latent image in a stripe area at an upstream of the im...	05/19/1992
5066989	Cleaning method for use in copy apparatus and toner used therefor A cleaning method is provided for use in a color electrophotographic apparatus in which color toner images formed by using a plurality of color toners on a photosensitive medium by repeating charging, exposure and reverse-developing steps are transferred ...	11/19/1991
5057875	Image forming apparatus provided with an image bearing film and a movable transfixing station In a color image forming method and apparatus utilizing electrophotography, a toner image bearing film is passed around a photosensitive member and moved past a transfer device, the photosensitive member is uniformly charged, and is then exposed to light ...	10/15/1991
4839692	Apparatus for reproducing multi-color image A photoreceptor having a insulating layer in which plural color-separation filters are arranged in the form of fine line type or of mosaic type provided on the photosensitive layer having the photosensitivity for the entire range of visible ray, is used a...	06/13/1989
4800839	Developing device for electrophotographic color copier A device applicable to an electrophotographic color copier or a color ink jet printer for selectively supplying visualizing liquids of different colors, e.g. black, red, green and blue or a mixture thereof to a photoconductive drum, paper or like recordin...	01/31/1989
4764790	Method for cleaning photoreceptor of image forming apparatus A method for cleaning a photoreceptor of an image forming apparatus includes actuating a cleaning means of a cleaning system and rotating the photoreceptor before a usual image forming operation, after a predetermined time, charging a particular area of t...	08/16/1988
4724459	Apparatus for selectively recycling used toner or delivering such toner to a container An electrographic apparatus has a photoconductor on which a latent image is formed, and a development station provides particles of toner to the photoconductor for developing a latent image. After the developed image has been trnsferred to a copy sheet, r...	02/09/1988
4673284	Cleaning device A cleaning device for removing the residual toner particles on the insulating surface in a two color printing apparatus includes a rotatable cleaning brush having two kinds of fiber materials charged the opposite polarities, and a flicker device is also p...	06/16/1987
4639124	Cleaning system for a multicolor electrophotographic printing machine An apparatus in which particles of at least two different colors are removed from a photoconductor surface. The cleaning system is controlled to remove particles of one color during one cycle of the apparatus and particles of the other color during anothe...	01/27/1987
4571071	Cleaning apparatus and method for a polychromatic electrophotographic copier A cleaning apparatus and method for removing residual toner from a photoconductor in a color copier. The apparatus includes a magnetic brush for removing color toner particles from the photoconductor as the different color toner particles serially appear ...	02/18/1986
4449475	Cleaning device for the intermediate image carrier of an electrophoretic printer The cleaning device for the drum-shaped intermediate image carrier of an electrophoretic printer is used in the field of technical data processing in order to improve the quality of the electrophoretically printed color images. The toner suspensions of di...	05/22/1984
4336546	Magnetic printing apparatus Magnetic printing apparatus for forming on a substrate a colored print of an original colored design, said apparatus comprising a ferromagnetic printing means which is imposed on an electrically conductive support; means for forming on the ferromagnetic p...	06/22/1982

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Class 399/344 - Color