Patents by Inventor Hiroshi Niki

Hiroshi Niki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6503165
    Abstract: A hydraulic control device for an automatic transmission capable of preventing engine racing and tie-up by controlling disengagement side oil pressure in accordance with an input torque and an oil temperature. Gear-change execution controller U4 controls drain timings T1 and T3 and a drain gradient &dgr;P of the disengagement side oil pressure acting on the frictional engagement elements of the disengagement side according to the magnitude of the input torque and elevation of the oil temperature in torque phase control wherein both the engagement side oil pressure and the disengagement side oil pressure are controlled.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: January 7, 2003
    Assignee: Aisin AW Co., Ltd.
    Inventors: Takayuki Kubo, Hiroshi Niki, Shigeyasu Kozaki
  • Patent number: 5729804
    Abstract: An endless toner transport which connects a developing device with a cleaning device is disposed so as to pass through these devices in their respective longitudinal directions. The mixing of toner can be enhanced by returning recovered toner to the developing device and by supplying fresh toner to the cleaning device by using the toner transport itself, whereby the reuse of recovered toner and the reduction of the quantity of fresh toner used can be conducted more effectively. In the processes of transporting toner from the developing device to the cleaning device and from the cleaning device to the developing device, toner can effectively be stirred and mixed by utilizing oscillation or the like generated in the endless toner transport which can be in the form of a coil spring so that an additional stirring member is not required, thereby allowing the developing device, and hence the entire image forming apparatus, to be greatly reduced in size.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: March 17, 1998
    Assignee: Seiko Epson Corporation
    Inventors: Tomoe Aruga, Kiyoharu Momose, Junichi Okada, Junichiro Shinozaki, Yoshiro Koga, Hiroshi Niki, Toshiaki Ohno
  • Patent number: 5635972
    Abstract: A residual recording material amount detector for a laser printer of the present invention is provided with a continuous dot number detecting device for counting a number of continuous video signals for modulating a laser light source, a toner consumption data storage device for storing a toner consumption per number of continuous dots, and an integrated toner consumption storage device implemented by a nonvolatile memory for storing an integrated value of toner consumptions at the time of forming a series of dots calculated by the continuous dot number detecting device and the toner consumption data storage device. According to the residual recording material amount detector for the laser printer of the present invention, the toner consumption can be detected correctly irrespective of the kind of data to be printed.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: June 3, 1997
    Assignee: Seiko Epson Corporation
    Inventors: Akira Maruyama, Hiroshi Niki, Reiko Nagai
  • Patent number: 5537191
    Abstract: An endless toner transport which connects a developing device with a cleaning device is disposed so as to pass through these devices in their respective longitudinal directions. The mixing of toner can be enhanced by returning recovered toner to the developing device and by supplying fresh toner to the cleaning device by using the toner transport itself, whereby the reuse of recovered toner and the reduction of the quantity of fresh toner used can be conducted more effectively. In the processes of transporting toner from the developing device to the cleaning device and from the cleaning device to the developing device, toner can effectively be stirred and mixed by utilizing oscillation or the like generated in the endless toner transport which can be in the form of a coil spring so that an additional stirring member is not required, thereby allowing the developing device, and hence the entire image forming apparatus, to be greatly reduced in size.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: July 16, 1996
    Assignee: Seiko Epson Corporation
    Inventors: Tomoe Aruga, Kiyoharu Momose, Junichi Okada, Junichiro Shinozaki, Yoshiro Koga, Hiroshi Niki, Toshiaki Ohno
  • Patent number: 5257068
    Abstract: An electrophotographic recording apparatus comprising a sheet feeder for feeding a sheet of recording paper to a sheet feed inlet; an image forming unit for forming a printing image onto a photosensitive drum based on printing data and transferring the printing image onto the sheet; and a fixing unit for fixing the transferred image on the sheet, in which these units are arranged vertically. The apparatus further comprises a device for reversing and returning the sheet to the photosensitive drum to enable the photosensitive drum to transfer a second printing image onto the opposite side of the sheet.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: October 26, 1993
    Assignee: Seiko Epson Corporation
    Inventors: Shigeru Sawada, Mitsuaki Maruyama, Hiroshi Niki
  • Patent number: 5085103
    Abstract: An automatic transmission for an automotive vehicle has a plurality of friction devices for selectively coupling a number of rotary elements in a planetary gear mechanism to one another, and a hydraulic circuit for controlling changeover of the friction devices. The hydraulic circuit includes a regulator valve for generating line pressure, a manual valve for selectively changing over the line pressure to the hydraulic circuit, a plurality of shift solenoids for directly controlling engaging hydraulic pressure of the friction devices by duty control when a shift is made, and a plurality of relay valves controlled by the solenoid valves, wherein the solenoid valves are duty-controlled independently of one another. With such an arrangement, one accumulator is sufficient and the number of valves can be reduced, so that the valve body can be made more compact. In addition, highly precise shock control is possible with regard to all shift conditions.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: February 4, 1992
    Assignee: Aisin AW Co., Ltd.
    Inventors: Masahiko Ando, Kazuhisa Ozaki, Hiroshi Niki
  • Patent number: 5083170
    Abstract: An electrophotographic recording apparatus comprising these units which are arranged vertically: a sheet feeder for feeding a sheet of recording paper to a sheet feed inlet; an image forming unit for forming a printing image onto a photosensitive drum based on printing data and transferring the printing image onto the sheet; and a fixing unit for fixing the transferred image on the sheet. The apparatus further comprises a sheet switching guide mechanism by which the head end of the sheet is switched to both upper and lower directions. When the sheet switching guide mechanism is set to the upper direction, the printed sheet is forwarded by a sheet guide member to thereby pass through the printing path the sheet has already been through with the rear side of the sheet being the front, and the printing data is written from the last line during this process.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: January 21, 1992
    Assignee: Seiko Epson Corporation
    Inventors: Shigeru Sawada, Mitsuaki Maruyama, Kenji Sawada, Hitoshi Nakagawa, Jun Tsujimoto, Shinichi Kasai, Masahiko Takeshita, Satoshi Kaneta, Masahiro Koiwai, Hiroshi Niki
  • Patent number: 5038180
    Abstract: In collecting toner waste from the surface of an image carrier within an image forming apparatus, the toner waste is removed from an image carrier with a cleaning blade. The cleaning blade is at the top of a stack which leads to a storage container. The top of the stack is positioned near the bottom of the image carrier. A sealing member disposed opposite the cleaning blade at the top of the stack conforms to the curved surface of the image carrier and in combination with the cleaning blade and image carrier enclose the top of the stack. Toner waste is thereby prevented from splashing and oozing through the stack during and/or after a copying/printing cycle.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: August 6, 1991
    Assignee: Seiko Epson Corporation
    Inventor: Hiroshi Niki
  • Patent number: 5021825
    Abstract: In an image forming device, the developing unit, photosensitive drum and/or cleaning unit are assembled into a removable unitary cartridge. A mounting device includes at least one latch for releasably retaining the cartridge on the device through engagement with a projection on the cartridge. The latch includes a camming surface pivotably displaceable by engagement with the projection so as to permit passage of the projection into a notch of the mounting device and returning to a latch position upon such passage.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: June 4, 1991
    Assignee: Seiko Epson Corporation
    Inventor: Hiroshi Niki
  • Patent number: 5001516
    Abstract: A page printer is provided which includes a housing having a lateral side plate that is formed from an electrically conductive material, with a gate roller, a developing unit, a photosensitive drum unit, a fixing unit and a paper discharging roller mounted in the housing. The electronic circuitry for controlling the page printer is disposed in a side portion of the housing with the lateral side plate disposed between the electronic circuitry and the units.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: March 19, 1991
    Assignee: Seiko Epson Corporation
    Inventors: Mitsuaki Maruyama, Hiroshi Niki, Shigeru Sawada, Seiji Mochizuki, Yasuhiro Gyoutoku
  • Patent number: 4980758
    Abstract: An image processing apparatus in which first color image signals of an original are separated into a plurality of color images and the optical information of the color image is converted to an electrical signal for each pixel of the image. The first color image signal is processed to generate a second color image signal which corresponds to each of the pixels, has a plurality of bits and carries density data and color data, the color data designating which one of a plurality of predetermined colors the color of the pixel belongs to, and image processing device for processing the second color image signal.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: December 25, 1990
    Assignee: Konica Corporation
    Inventors: Masahiko Matsunawa, Hiroyuki Yamamoto, Hiroshi Niki
  • Patent number: 4945364
    Abstract: A page printer having a housing body and including a gate roller, a developing unit, a photo-sensitive drum unit, a fixing unit and a sheet discharging roller arranged on the front side of the housing body in the order stated from above so that the printing sheet conveying path is substantially vertical to reduce floor area required for installation. An optical writing unit is provided on the rear side of the housing body. Guide members are provided on the housing body to readily mount or demount the photo-sensitive drum unit. Further, a shield board is disposed between the photo-sensitive drum unit and the fixing unit so that the printing sheet will not be stained by toner scattering from the photo-sensitive drum.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: July 31, 1990
    Assignee: Seiko Epson Corporation
    Inventors: Mitsuaki Maruyama, Hiroshi Niki, Shigeru Sawada, Seiji Mochizuki, Yasuhiro Gyoutoku
  • Patent number: 4941002
    Abstract: In a page printer, a gate roller, a developing unit, a photo-sensitive drum unit, a fixing unit and a sheet discharging roller are mounted on the open front side of a housing body in the order stated from above, thus forming a substantially vertical sheet conveying path. As a result, the installation floor area is reduced. In the rear portion of the housing, and a transferring unit and a sheet guide member are provided on the cover of the housing body. Thus, the light beam generating unit and the photo-sensitive drum are maintained unchanged in position at all times. A cut sheet feeder is mounted over the housing body so that it is movable back and forth, thus facilitating the inspection and maintenance of the printer.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: July 10, 1990
    Assignee: Seiko Epson Corporation
    Inventors: Mitsuaki Maruyama, Hiroshi Niki, Shigeru Sawada, Seiji Mochizuki, Yasuhiro Gyoutoku
  • Patent number: 4879595
    Abstract: A color image processing technique using optics to separate an original color image into a plurality of colors. These colors are photoelectrically converted to electric signals. Color information signals are then generated from these electric signals. The color information signals are coded by comparing them with a threshold value. An individualized set of such threshold values is provided for each of the plurality of colors. In one embodiment, a luminance signal is provided from the color information signals. The luminance signal is utilized in response to a monochrome code selection signal to enable the original color image to be reproduced as a monochrome image. Color gamut information and color density information of the color gamut can be obtained from the color information signals during a first scan of a document bearing the color image.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: November 7, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Niki, Masahiko Matsunawa, Hiroyuki Yamamoto, Yoshinori Abe
  • Patent number: 4868599
    Abstract: In storing toner waste collected from the surface of an image carrier within an image forming apparatus, the toner waste is compressed within a container by a resilient cantilever member. A diaphragm located within the container expands through an opening of the container based on the pressure exerted on the diaphragm by the compressed toner waste. Upon traveling a predetermined distance, the diaphragm forces a switch to close which triggers an alarm indicating that the container is full of toner waste.
    Type: Grant
    Filed: June 2, 1987
    Date of Patent: September 19, 1989
    Assignee: Seiko Epson Corporation
    Inventor: Hiroshi Niki
  • Patent number: 4825246
    Abstract: An image processing method and apparatus wherein document information is separated by using an optical device into two colors that are complementary to each other, converted photo-electrically and processed by using a photo-electric conversion device, and extracted on the basis of the result of processing by using a color extraction information generation device, and a color information designated by the color extraction information of the color extraction information generation device is stored in a color information storage device.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: April 25, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masakazu Fukuchi, Kiyoshi Akazawa, Masahiko Matsunawa, Hiroshi Niki, Shunji Matsuo, Hiroyuki Yamamoto, Yoshinori Abe
  • Patent number: 4754293
    Abstract: An image forming apparatus employing a face-down delivery system in which the plane of the recording medium at any position relative to any other position assumed by the recording medium beginning with a stacking tray and ending with a delivery tray does not exceed 90.degree.. The apparatus includes a detachable cartridge which includes a photosensitive member, a charging device and a cleaning device. In one preferred embodiment, register rollers and fixing rollers are positioned relative to each other such that a substantially zero angular deviation exists in the path traveled by the recording medium between these two pairs of rollers.
    Type: Grant
    Filed: April 2, 1987
    Date of Patent: June 28, 1988
    Assignee: Seiko Epson Corporation
    Inventors: Hiroyuki Aizawa, Mitsuaki Maruyama, Shigeru Sawada, Yasuhiro Gyoutoku, Hiroshi Niki, Kouichi Higashimura, Kenji Aoki
  • Patent number: 4181749
    Abstract: Surimi suitable for the production of Kamaboko (fish meat jelly) can be obtained at high yield by compounding (1) a salt-soluble protein fraction prepared by mincing fish meat taken from raw fish into a sol-form, water-washing the resulting sol and dewatering and then subjecting the same to a salt-solution treatment, with (2) heat-denaturated water-soluble protein fractions prepared by heating to coagulation water-soluble protein fractions leached out in the water-wash and salt-solution treatment.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: January 1, 1980
    Assignee: Snow Band Milk Products Co., Ltd.
    Inventors: Hiroshi Niki, Tuneo Katou, Eiki Deya, Toru Doi, Kenkichi Ahiko, Hiromichi Hayashi
  • Patent number: 4118517
    Abstract: A method for preparing a fish meat powder capable of forming KAMABOKO is disclosed. The method involves forming a slurry of fish meat in a neutral buffer solution containing divalent metal ions and polyvalent weak-acid anions. The anions are present in an amount sufficient to sequester the metal ions. The slurry is converted to a fish meat powder by spray-drying.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: October 3, 1978
    Assignee: Snow Brand Milk Products Co. Ltd.
    Inventors: Hiroshi Niki, Eiki Deya, Toru Doi, Seiichiro Igarashi, Hiromichi Hayashi
  • Patent number: RE34948
    Abstract: An image forming apparatus employing a face-down delivery system in which the plane of the recording medium at any position relative to any other position assumed by the recording medium beginning with a stacking tray and ending with a delivery tray does not exceed 90.degree.. The apparatus includes a detachable cartridge which includes a photosensitive member, a charging device and a cleaning device. In one preferred embodiment, register rollers and fixing rollers are positioned relative to each other such that a substantially zero angular deviation exists in the path traveled by the recording medium between these two pairs of rollers.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: May 23, 1995
    Assignee: Seiko Epson Corporation
    Inventors: Hiroyuki Aizawa, Mitsuaki Maruyama, Shigeru Sawada, Yasuhiro Gyoutoku, Hiroshi Niki, Kouichi Higashimura, Kenji Aoki