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| Number | Title | Issue Date |
| 8185026 | Image forming apparatus An electric charge elimination needle for eliminating an electric charge of an intermediate transfer belt is disposed on the side more downstream than an opposite sheet metal which restricts an electric potential on the belt, in a direction of rotation of the interm... | 05/22/2012 |
| 8000640 | Image forming apparatus An image forming apparatus includes a section for obtaining a property of a recording material; an adjusting section for adjusting a toner amount of a toner image formed by development depending on the property of the recording material; a charging section for charg... | 08/16/2011 |
| 7822374 | Image formation device There is provided an image formation device comprising an electrostatic latent image holding body having an latent image formation surface on which an electrostatic latent image is formed, a developer supply unit to supply developer to the electrostatic latent image... | 10/26/2010 |
| 7761042 | Color image forming apparatus There is described a color image forming apparatus for forming a color image onto a transfer material by superimposing a plurality of unicolor toner images. The apparatus includes an intermediate transfer member onto which the plurality of unicolor toner images are ... | 07/20/2010 |
| 7711296 | Pretransfer toner treatment in an electrostatographic printer A system for reducing lead edge (LE) smearing in an electrostatographic machine is provided. The system comprises a pretransfer corotron positioned between a developing station and a transfer station in an electrostatographic imaging device. The pretransfer corotron... | 05/04/2010 |
| 7706730 | Image recording device having a charge producing section upstream of a transfer receiving body An image forming device which transfers a toner image carried on an image carrying body from the image carrying body to a transfer receiving body in a transfer section, the device including a charge producing section provided at an upstream side, in a moving directi... | 04/27/2010 |
| 7647014 | Pretransfer charging device and image forming apparatus including same The present invention is made to provide a pretransfer charging device, which allows (i) reduction of generation of discharge products such as ozone and nitroxide, (ii) excellent uniform charging, (iii) continuous stable charging for a long period of time, and (iv) ... | 01/12/2010 |
| 7639974 | Color image forming apparatus with pre-secondary transfer charge eliminating section A color image forming apparatus for forming a color image onto a transfer material by superimposing a plurality of unicolor toner images. The apparatus makes it possible to produce a high quality image through a secondary transferring operation with a good secondary... | 12/29/2009 |
| 7593675 | Color image forming apparatus having a discharging unit to discharge an electrical charge of a toner image transferred on an intermediate transfer member A color image forming apparatus includes: a plurality of image carriers each on which a toner image having a color different from each other is formed; an intermediate transfer member to which each of the image carriers is transferred; a plurality of a primary trans... | 09/22/2009 |
| 7558516 | Image forming apparatus wherein a carrier weight ratio in a first supply container and carrier weight ratio in a second supply container are substantially equal to each other An image forming apparatus includes a first developing device for developing an electrostatic image with a first developer including a non-transparent toner and a carrier; a second developing device for developing an electrostatic image with a second developer inclu... | 07/07/2009 |
| 7502582 | Method and apparatus for printing using a tandem electrostatographic printer A tandem color electrostatographic printer apparatus has five or more color printing stations or modules for applying respective color separation toner images to a receiver member to form a pentachrome color image in a single pass. A fuser station fuses the pentachr... | 03/10/2009 |
| 7489894 | Image forming apparatus with belt surface regulating member An image forming apparatus for a color print having an intermediate transfer belt and a plurality of image forming devices, wherein each image forming device has a photoreceptor and a developing device, and toner images formed on photoreceptors by the developing dev... | 02/10/2009 |
| 7440719 | Color image forming apparatus having pre-transfer discharger In the discharge section to correct the potential of toner image on the intermediate transfer body before the secondary image transfer and to obtain a good secondary transfer image, it is made that the opposite electrode is brought into contact with the back surface... | 10/21/2008 |
| 7433635 | Method and apparatus for using a transfer assist layer in a multi-pass electrophotographic process with electrostatically assisted toner transfer A method of producing an image on a final image receptor from image data in a multiple pass electrophotographic system is provided. The method includes the steps of applying transfer assist material to an intermediate transfer member and providing at least one devel... | 10/07/2008 |
| 7433636 | Method and apparatus for using a transfer assist layer in a tandem electrophotographic process with electrostatically assisted toner transfer A method of producing an image on a final image receptor in a single pass electrophotographic system is provided. The method includes the steps of providing at least one toner development unit including a photoreceptive element and charged toner particles, and creat... | 10/07/2008 |
| 7426043 | Asymmetric IDZ precession in a multi-pass direct marking system What is disclosed is a system and method for minimizing the Inter-Document Zone (IDZ) in printing system architectures with print engines running at constant speed. The asymmetric IDZ precession disclosed herein is intended for those multi-pass systems where there i... | 09/16/2008 |
| 7400850 | Method and apparatus for improving image transfer in liquid electrostatic printing A method for improving image transfer in liquid electrostatic printing includes applying at least one layer of toner to a surface, transferring the at least one layer of toner from the surface to an intermediate transfer member, and after transferring the at least o... | 07/15/2008 |
| 7373100 | Color image forming apparatus having pre-transfer discharge electrode A color image forming apparatus may have an image forming unit composed of a plurality of groups which have image carriers and image forming devices. ... | 05/13/2008 |
| 7354691 | Imaging apparatus and improved toner therefor The invention relates to a liquid toner and imaging apparatus provided with an imaging surface having a liquid toner image formed thereon on fibrous toner particles and carrier liquid. The fibrous toner particles can be composed of a polymer portion and pigment disp... | 04/08/2008 |
| 7349655 | Developing device and method of forming images A developing device configured to carry out development of an electrostatic image using color toner particles and transparent toner particles includes color and transparent developing units configured to store toner particles, carrier particles, and additive particl... | 03/25/2008 |
| 7346302 | Color image forming apparatus and electric charge eliminating device A color image forming apparatus wherein the pre-secondary transfer electric charge eliminating device arranged intermediate between a primary transfer section and a secondary transfer section is provided with: a discharge electrode arranged on the side opposite to t... | 03/18/2008 |
| 7340190 | Image forming apparatus In an image forming apparatus, an image forming condition is changed depending on whether or not a recording material on which a toner image is formed is ordinary high gloss paper or thermoplastic resin coated paper. More specifically, in the case where a high gloss... | 03/04/2008 |
| 7340205 | Full-color electrophotographic image forming apparatus In image formation of a black-line image, the image is developed with black toner, and in addition parts of the black-line image corresponding to an intersection between at least two black lines and a middle portion of a black line are developed with toner of at lea... | 03/04/2008 |
| 7327976 | Color image forming apparatus There is disclosed a color image forming apparatus, which makes it possible to prevent a reproduced image from generating image defects, such as a color unevenness, a toner scattering, etc. ... | 02/05/2008 |
| 7324765 | Image forming apparatus In an image forming apparatus, an image forming condition is changed depending on whether or not a recording material on which a toner image is formed is ordinary high gloss paper or thermoplastic resin coated paper. More specifically, in the case where a high gloss... | 01/29/2008 |
| 7319835 | Image forming device having first and second light providing units An image forming device, including a charging unit to electrically charge a surface of an organic photoconductive medium; a light exposure unit to form an electrostatic latent image on the surface of the organic photoconductive medium; a developing unit to develop t... | 01/15/2008 |
| 7315702 | Image forming apparatus capable of reducing time unable to perform image formation due to temperature change of image bearing member An image forming apparatus is capable of reducing the time when it is unable to perform image formation due to a temperature change of an image bearing member. The apparatus includes a rotatable image bearing member; an electrostatic image forming device for continu... | 01/01/2008 |
| 7310484 | Apparatus for forming visible black and white or color images and invisible images The image forming apparatus of the present invention includes a cyan color image formation unit which uses a cyan color toner to form a cyan color image; a magenta color image formation unit which uses a magenta color toner to form a magenta color image; a yellow co... | 12/18/2007 |
| 7308212 | Color image forming apparatus The color image forming apparatus, having: an intermediate transfer member; a plurality of image forming sections provided along the intermediate transfer member; a primary transfer device provided along the intermediate transfer member to transfer toner images form... | 12/11/2007 |
| 7301675 | Glossmark images with clear toner The present invention relates to creating differential gloss images in clear toner by the manipulation of halftones employed prior to the depositing of the clear toner layer upon a substrate. By selectively applying halftones with anisotropic structure characteristi... | 11/27/2007 |
| 7298997 | Color image forming apparatus with pre-charging unit and potential adjustment unit A color image forming apparatus includes primary transferring units that transfer toner images of different colors from photoreceptors to an intermediate transfer body, a secondary transferring unit that transfers a color toner image from the intermediate transfer b... | 11/20/2007 |
| 7294441 | Method and apparatus for using a transfer assist layer in a tandem electrophotographic process utilizing adhesive toner transfer A method of producing a composite image on a final image receptor from image data in a single pass electrophotographic system is provided. The method includes steps for applying liquid transfer assist material comprising charged particles of transfer assist material... | 11/13/2007 |
| 7280788 | Image forming apparatus and transferring method An image forming apparatus according to the present invention is provided with a plurality of image bearing members, an intermediate transfer member, a plurality of first transfer devices, a second transfer device, and a charge amount adjustment section. The image b... | 10/09/2007 |
| 7269380 | Image forming apparatus An image forming apparatus includes an image carrier which has a predetermined center of rotation and on which a toner image is formed, a developing device which has a developing roll that rotates while carrying a toner on the surface thereof and that conveys the to... | 09/11/2007 |
| 7260350 | Image forming apparatus There is described an image forming apparatus, which makes it possible to conduct a sufficient discharging operation for a toner image. The apparatus includes an image forming section, an image bearing member, an intermediate transfer belt, a part of which is suppor... | 08/21/2007 |
| 7257357 | Photoreceptor charging systems and methods Embodiments herein comprise a charging station adjacent a photoreceptor. The charging station is adapted to charge the document zone of the photoreceptor with a first negative voltage and to charge the inter-document zone of the photoreceptor with a second negative ... | 08/14/2007 |
| 7254358 | Color image forming apparatus A color image forming apparatus includes plural developing units that respectively form toner images of different colors on plural photoreceptors, plural primary transferring devices that successively transfer each of the toner images of the plural photoreceptors on... | 08/07/2007 |
| 7251442 | Color image forming apparatus having advanced transfer system An image forming apparatus having an intermediate transfer body in which color toner images are superimposed on the intermediate transfer body is disclosed. Additionally, the toner image potential may be suppressed in areas with large toner electrostatic charge of t... | 07/31/2007 |
| 7231157 | Image forming apparatus The image forming apparatus includes a rotatable image bearing member, a latent image forming device, a developing device, a transferring device, and a corona charging device having a discharge wire and a surrounding shield member and being arranged downstream of a ... | 06/12/2007 |
| 7231169 | Image forming apparatus with a first toner and a light permeable second toner The image forming apparatus includes a photosensitive member, wherein an electrostatic latent image is formed by illuminating light onto the photosensitive member charged; a developing device for adhering first toner to a portion of the electrostatic latent image to... | 06/12/2007 |
