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| Number | Title | Issue Date |
| 8036564 | Image forming apparatus including cooling device An image forming apparatus comprising a main body, a cooling device, and a coupling assembly. The cooling device cools a cooling target such as a heat generator, and includes a heat-receiving section forming a heat-receiving-section channel through which a coolant f... | 10/11/2011 |
| 7937015 | Image forming apparatus having a development device mixing and conveying developer An image forming apparatus includes an image carrying member carrying a latent image and a development device disposed along a surface of the image carrying member. The development device includes a developer storing case storing a developer, a developer carrying me... | 05/03/2011 |
| 7920804 | Developing device and image forming apparatus having the same A developing device according to the present invention includes a developer storing section storing a developer, a stirring member disposed in the developer storing section and transporting the developer while stirring the developer, a developer carrier receiving th... | 04/05/2011 |
| 7873297 | Image forming apparatus An image forming apparatus includes an imaging unit for black and imaging units for other colors, a writing unit for black and a writing unit for other colors, a first heater corresponding to the imaging unit and the writing unit for black color, and a second heater... | 01/18/2011 |
| 7693444 | Image reading and recording apparatus having a cartridge dismounting space between a fixing unit and an exposing unit An image reading and recording apparatus has a scanner unit for effecting exposure conforming to an image signal on a photosensitive drum, a heat roller pair for fixing a toner image formed on a recording sheet, and a reading unit for reading an original. The heat r... | 04/06/2010 |
| 7634211 | Temperature control system for a roller in an image forming apparatus A temperature control system for a roller that is detachably mounted in a frame of an image forming apparatus includes a primary liquid circuit formed in the roller and containing a first liquid and a secondary liquid circuit formed outside of the roller and contain... | 12/15/2009 |
| 7599641 | Exhaust system of image forming device A low-voltage power source circuit board is provided downstream in relation to the flow of air introduced through an intake hole and exhausted by a power source fan. Heat sinks are provided on the low-voltage power source circuit board on electronic parts that gener... | 10/06/2009 |
| 7444097 | Air-conditioned electrophotographic image forming apparatus An electrophotographic image forming apparatus of the present invention includes a frame, a photoconductive drum disposed in the frame, and an air conditioning device for removing moisture around the drum inside the frame. The drum has a wear-resistant, durable surf... | 10/28/2008 |
| 7433624 | Cooling structure and image forming apparatus provided with the same A cooling structure includes driving motors as heat sources, a metal sheet body as a heat transfer member that comes into contact with the driving motors, and a first fan serving as a cooling portion provided oppositely to the metal sheet body in a portion spaced ap... | 10/07/2008 |
| 7429040 | Feeding apparatus, and image forming apparatus incorporating feeding apparatus A feeding apparatus including a feeding roller for conveying a sheet, a separation roller for conveying the sheet in a reverse direction, a transmission mechanism for transmitting the rotational force to the feeding roller, a limited force reverse transmission mecha... | 09/30/2008 |
| 7420716 | Image reading apparatus An object of this invention is to provide an image reading apparatus capable of reading an original image at high speed. And other object is to provide an image reading apparatus in which even when heat is generated at an inverter, reading operation is not influence... | 09/02/2008 |
| 7421218 | Image forming apparatus with surface potential detection An image forming apparatus having a heating device that is configured to heat an image bearing member so that the detection of the surface potential of the image bearing member can be controlled with greater stability. The image forming apparatus utilizes a surface ... | 09/02/2008 |
| 7403741 | Exhaust system of image forming device A low-voltage power source circuit board is provided downstream in relation to the flow of air introduced through an intake hole and exhausted by a power source fan. Heat sinks are provided on the low-voltage power source circuit board on electronic parts that gener... | 07/22/2008 |
| 7400841 | Color image forming device A color printer is disclosed which includes a photosensitive drum, a rotary developing device, a laser unit, a toner container, and a toner supply device. The rotary developing device is located adjacent to the photosensitive drum and includes a plurality of develop... | 07/15/2008 |
| 7400842 | Heat exhaustion apparatus and image forming apparatus using same Heat exhaust holes are provided in a unit frame at positions just above respective imaging units. An exhaust fan causes air heated at developing elements to be exhausted outside an apparatus via heat exhaust ducts and a common duct. The heat exhaust holes are formed... | 07/15/2008 |
| 7395001 | Electrophotographic image forming apparatus An electrophotographic image forming apparatus in which a reduction in image density when continuous sheet supply endurance is effected under a low-humidity environment is prevented, and under a high-humidity environment, an image deletion is prevented. A photosensi... | 07/01/2008 |
| 7391987 | Image forming apparatus which uses a plurality of heat-fixing devices An image forming apparatus which uses a plurality of heat-fixing devices, and secures a fixing property and a high quality of image and on the other hand, suppresses electric power consumption and further, curtails the number of parts, and gives consideration to an ... | 06/24/2008 |
| 7362993 | Transfer device and image forming apparatus In a transfer device, a driving roller that rotationally drives a belt member satisfies a condition “(R2−R1)π×(s−1)×p/(R1×π×2)≦0.15 millimeter”, where R1 is a diameter of the driving roller under an environ... | 04/22/2008 |
| 7356277 | Apparatus for cooling an electrophotographic image forming apparatus The present invention provides an image forming apparatus which prevents the rusting of metallic components and paper jams and improves the cooling capability of a heat pipe by ensuring that water droplets do not become adhered to the heat pipe, thereby reducing the... | 04/08/2008 |
| 7349114 | Image-forming system and image-forming apparatus used in the image-forming system An image-forming system includes an image-forming apparatus, and a terminal device capable of communicating with the image-forming apparatus. The terminal device comprises a signal-transmitting unit. The image-forming apparatus comprises an image-forming unit; a sig... | 03/25/2008 |
| 7336405 | Thermal fixing device for controlling the temperature of a heat member to melt toner on a recording sheet A thermal fixing device for fixing toner images onto recording sheets includes a heat member, a pressing member, a temperature sensor, a clock, and a control unit. The control unit performs a toner fixing control and a high-temperature heat-up control. During the to... | 02/26/2008 |
| 7311044 | Imaging device cooling system One embodiment of the present invention provides a cooling system in an imaging device having an element that generates heat. The cooling system comprises a thermoelectric generator and a cooling device. The thermoelectric generator is thermally coupled to the eleme... | 12/25/2007 |
| 7285042 | Electronic apparatus case having ventilation system A case having a ventilation system for ventilating a heat generation source disposed in the case, includes: a first sub-case and a second sub-case which is joined to the first sub-case; a first gap provided in a surface of a joining section between the first sub-cas... | 10/23/2007 |
| 7269374 | Image forming apparatus with internal temperature control A full-color image forming apparatus has a cooling fan switchable between rotating speeds of “full speed” and “half speed.” A transfer portion thermistor is installed near a photosensitive drum and an intermediate transfer member, and a printer control porti... | 09/11/2007 |
| 7269383 | Transfer device and image forming apparatus In a transfer device, a driving roller that rotationally drives a belt member satisfies a condition “(R2−R1)π×(s−1)×p/(R1×π×2)≦0.15 millimeter”, where R1 is a diameter of the driving roller under an environ... | 09/11/2007 |
| 7266334 | Cooling unit for cooling an intermediate transfer medium of an image forming apparatus An image forming apparatus includes a photosensitive medium on which an image is formed. An intermediate transfer medium is disposed to contact the photosensitive medium and to rotate in a closed loop, and onto which the image formed on the photosensitive medium is ... | 09/04/2007 |
| 7242883 | Image formation apparatus having exposure timing control An image formation apparatus is disclosed, wherein temperatures of two or more places on a transfer/conveyance belt are measured. Timing of writing to photo conductor drums based on pixel clock signals is controlled in reference to differences between the measured t... | 07/10/2007 |
| 7236716 | Image formation device having a fixing apparatus placed on a heat-shielding member An image formation device is provided, at which a fixing apparatus is disposed inside a housing of a printer main body, and which is configured in a fanless ventilation structure. This image formation device is provided with: a fixing unit mounting portion positione... | 06/26/2007 |
| 7224921 | Image forming apparatus capable of effectively removing heated air undesirable to image reproduction An image forming apparatus includes an image forming mechanism, a transfer mechanism, a fixing mechanism, and a heat radiation mechanism. The image forming mechanism forms a toner image which is transferred by the transfer mechanism transfers onto a recording sheet ... | 05/29/2007 |
| 7194221 | Image forming apparatus with heat dissipation unit and method of dissipating heat in same An image forming apparatus includes a shielding member protruding from a top surface of an upper frame and forming a chamber portion having a predetermined area together with an upper cover of the main body covering the shielding member so as to include a plurality ... | 03/20/2007 |
| 7190918 | Image forming apparatus An image forming apparatus of the present invention includes an image forming section configured to develop a latent image to thereby produce a corresponding toner image. An endless image transfer body directly or indirectly supports the toner image and conveys it w... | 03/13/2007 |
| 7177559 | Image forming apparatus with temperature control An image forming section forms a visible image on a charged surface of an image bearing body. A transfer section transfers the visible image onto a recording medium. A fixing unit fixes the visible image on the recording medium. A temperature detecting section outpu... | 02/13/2007 |
| 7167657 | Image forming apparatus that controls image forming process based on temperature of conveying belt An image forming apparatus such as a printer has: an image forming unit which forms an electrostatic latent image onto a charged photosensitive drum, deposits toner onto the image, and forms a visible image; a belt arranged so as to run freely in contact with the im... | 01/23/2007 |
| 7157202 | Method and apparatus for reducing densification of multiple component electrographic developer The invention relates to the field of two component magnetic brush development of electrographic images. According to one aspect of the invention, a method of processing a developer is provided for developing an electrostatic image wherein a set developer is exercis... | 01/02/2007 |
| 7141776 | Integrated ROS bar An integrated imaging bar assembly. The single-assembly scan and imaging head comprises two sub-assemblies, one having a raster input bar and the other a raster output bar including their respective lens array systems. Each sub-assembly has a heat sink attached to i... | 11/28/2006 |
| 7106468 | Image forming system and image forming apparatus An image forming system includes an image forming apparatus which can wirelessly transmit information that there is a waiting job and has a plurality of modes concerning power consumption, a portable terminal which can receive the information transmitted from the im... | 09/12/2006 |
| 7105804 | Light beam scanning unit and image forming apparatus The temperature difference between an internal temperature and an external temperature which are detected by an internal temperature sensor and an external temperature sensor, respectively, is calculated. If the internal temperature is lower by not less than predete... | 09/12/2006 |
| 7085510 | Safety apparatus to suppress the spread of fire from a fixing chamber of a fixing station in an electrophotographic print or copy device To suppress spread of fire from a fixing chamber of a fixing station in an electrophotographic print or copy device, in the event of a fire, in order to partition a fixing chamber for a recording medium in a fireproof manner, arranged at the openings of the fixing c... | 08/01/2006 |
| 7085520 | Developing device, image forming apparatus, and image forming system An image forming apparatus comprises a rotatable rotating body to and from which a plurality of developer containers can be attached and detached, each of the developer containers being capable of containing developer of a different color. When the image forming app... | 08/01/2006 |
| 7079785 | Image developing apparatus to develop a latent image in a developing area on an image bearing member An image developing apparatus having a rotating member to bear developing agent in a housing of the image developing apparatus and to convey the developing agent of latent images onto paper transfer sheets opposite a image bearing member, wherein a part of the rotat... | 07/18/2006 |
