Patents Represented by Attorney Robert M. Asher
  • Patent number: 5126859
    Abstract: A contact type image sensor includes a light source for illuminating an original to be read and a substrate in which an optical fiber array member is assembled. The substrate is disposed such that one end of the optical fiber array member faces the original for transmitting a reflected light from the illuminated original therethrough. The contact type image sensor further includes a light detecting element array formed on the substrate and facing the other end of the optical fiber array member for receiving the transmitted light and converting the received light to an electrical signal. The contact type image sensor also includes a driving circuit disposed on the substrate and electrically connected to the light detecting element array for driving the light detecting element array.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: June 30, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Atsushi Yoshinouchi, Shuhei Tsuchimoto
  • Patent number: 5127015
    Abstract: A driving circuit of a semiconductor laser includes a photodiode receiving a light of the semiconductor laser, a first detecting circuit for calculating a mean value signal of outputs of the semiconductor laser in accordance with an output of the photodiode, a second detecting circuit for calculating a maximum value signal of the outputs of the semiconductor laser, a circuit receiving the mean value signal for supplying a bias current for driving the semiconductor laser, a high-frequency superimposing circuit for modulating the bias current by high-frequency waves, and a modulating degree control circuit comparing the mean value signal with the maximum value signal for making a period of time for which the minimum value of the optical output values of the semiconductor laser becomes zero, in accordance with the comparison results.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: June 30, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Chikugawa, Masaru Ogawa, Kunio Suzuki
  • Patent number: 5125415
    Abstract: A syringe tip cap and a method for purging air from a syringe-like container containing air and hazardous liquid. The cap contains a hydrophilic filter which, when dry, allows air to pass through the filter. When the air is purged from the syringe, liquid from the container is pushed or drawn to the filter. The filter expands when wetted, seals the cap, and prevents further fluid flow. A flow restrictor may be included within the cap to concentrate the flow to only a portion of the filter to prevent premature sealing of the filter.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: June 30, 1992
    Assignee: Smiths Industries Medical Systems, Inc.
    Inventor: Craig J. Bell
  • Patent number: 5124779
    Abstract: A silicon carbide semiconductor device is disclosed which includes a silicon carbide single-crystal layer and at least one ohmic electrode in contact with the silicon carbide single-crystal layer, wherein the ohmic electrode is made of a titanium-aluminum alloy. Also disclosed is a method of producing the silicon carbide semiconductor device.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: June 23, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsuki Furukawa, Akira Suzuki, Yoshihisa Fujii
  • Patent number: 5115302
    Abstract: The present invention is directed to an arrangement of the color filters of a solid state imaging device for the frame storing operation, two of the four color filters F1, F2, F3 and F4 having the different spectral characteristics from each other are selected and laminated, wherein F1*F2 and F3*F4 are alternately arranged in a horizontal direction, while F2*F3 and F1* F4 are alternately arranged in the horizontal direction while being spaced one horizontal scanning period away from the former line so that the visible spectral characteristics of the three color filters are agreed in each region of the spectral band of the received light, and the combination of the three color filters is different for each region.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: May 19, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takashi Watanabe
  • Patent number: 5113225
    Abstract: An optical system driving device comprising: a lamp unit which emits an optical beam for scanning an object and moves with respect to the object; a photosensitive member which receives a reflection light reflected from the object; a mirror unit which is disposed on an optical path between the lamp unit and the photosensitive member for guiding the reflection light to the photosensitive member and moves at a predetermined speed ratio with respect to the lamp unit; and a rack-pinion means connected to the lamp unit and the mirror unit to move the units at the predetermined speed ratio. Thereby it becomes possible to simplify the structure of the device and easily adjust the relative position between the lamp unit and the mirror unit at the time of assembling the device. Also, the speed ratio between the lamp unit and the mirror unit can be easily adjusted to be a predetermined ratio.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: May 12, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masanobu Deguchi
  • Patent number: 5109153
    Abstract: Voidable articles are made with an identification code and a radiant energy responsive material coated over said code. The material is invisible and remains unactivated in ambient light but obscures the identification code upon being exposed to radiant energies such as heat or light from within a particular wavelength range. Printing can be accomplished by imaging light onto a substrate coated with photosensitive material including an infrared absorbing dye. A cancellation device for voiding documents of the present invention is made with a scanner, a comparator and a radiant energy source for exposing the document to activate the energy responsive material on the document.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: April 28, 1992
    Inventors: Edward L. Johnsen, Stephen D. Fantone
  • Patent number: 5105355
    Abstract: A text processing method and apparatus for storing inputted text data and for printing newly stored text data on paper on which text characters have been previously printed. The previously printed paper is set in a printer. New text data is input through a keyboard. The new text data is stored serially with the previously printed text data. Upon receiving a print instruction, the text data is serially searched. The paper is fed without printing whenever previously printed text data is searched. Characters are printed when the new text data is come across in the search.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: April 14, 1992
    Assignee: Sharp Corporation
    Inventors: Hiroichi Yoshida, Hiroko Murai
  • Patent number: 5099273
    Abstract: Image formation device includes an optical image memory which is shaped like a flat board and includes an image area formed almost in the center portion for storing an image and a void area surrounding the image area, where no image is written, the image stored being optically recognizable and able to be repetitively read; image writing means for writing the image in the optical image memory by the selectively irradiating the image area in accordance with data on a desired image; exposing means for exposing a photosensitive material by irradiating light through the optical image memory to the photosensitive material from which color coupler in a non-exposed portion is discharged by applying pressure; light control means for controlling a width of light irradiated to an area of the photosensitive material through the void area in the direction of the widthwise extension of the photosensitive material so that the width of light is identical with the width of the photosensitive material; and developing means for
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: March 24, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoichi Yamamoto, Masao Narumiya
  • Patent number: 5097287
    Abstract: An image forming apparatus comprising an optical device for forming a latent image on a photo and pressure sensitive sheet coated with microcapsules in which at least a photocuring material and a dyestuff are enveloped, a pressure developing device for superposing the photo and pressure sensitive sheet on which the latent image is formed on an image receiving sheet and breaking uncured microcapsules by pressure to form images on the image receiving sheet through use of the dyestuff, a light source for irradiating light on the image receiving sheet developed by the pressure developing device and a discharge device for discharging the image receiving sheet on which the light from the light source is irradiated to the outside.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: March 17, 1992
    Assignee: Sharp Corporation
    Inventors: Yoshiharu Tsujimoto, Hidenobu Yamane, Kunio Ohashi, Eiichi Kido
  • Patent number: 5093662
    Abstract: Method and apparatus for detecting low altitude wind shear through the use of autocorrelation on the received and processed echo signals. Self Autocorrelation of echo signals and autocorrelation of echo signals from consecutive pulses are used to calculate the low altitude Doppler velocities over distance. In an alternate embodiment, autocorrelation of echo signals from alternate pulses is also required. Wind shear is calculated from low altitude Doppler velocity as a function of location.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: March 3, 1992
    Assignee: Massachusetts Institute of Technology
    Inventor: Mark Weber
  • Patent number: 5091934
    Abstract: A telephone system with a clock includes a circuit which produces a first tone indicating a connection of a transmission line is on hold or that a preset time has arrived, and a different time announcing tone for announcing the arrival of the preset time while the connection of the transmission line is on hold. When a calling tone is to be produced upon reception of the call while the time announcing tone is emitted, the telephone system with the clock produces the calling tone in a manner different from the time announcing tone. Thus, it is possible to be alerted to both the time announcing tone and the holding tone and both the time announcing tone and the calling tone when either combination is initiated at the same time.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: February 25, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshiyuki Shimizu
  • Patent number: 5083767
    Abstract: A sheet supplying device has at least one sheet stacking portion for stacking a plurality of sheets to be fed, a unit for drawing the sheets out of the sheet stacking portion to feed the drawn sheet to a predetermined path, and a unit for returning a sheet into the sheet stacking portion. This sheet is drawn by the drawing unit but stayed in a position that the leading edge thereof is out of the sheet stacking portion.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: January 28, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Ken-ichi Iwamoto, Yuuji Sugimoto, Kenji Okada, Tadasu Taniguchi, Yoshikado Yamada, Toyoaki Namba
  • Patent number: 5082597
    Abstract: Disclosed herein is a sintered silicon carbide composite prepared by sintering a blend comprising from 25 to 85% by weight of silicon carbide, from 1 to 25% by weight of at least one of chromium and chromium compound, from 10 to 70% by weight of at least one of carbide, nitride and boride of elements belonging to the groups IVb and Vb of the periodical table, and from 3 to 25% by weight of aluminum oxide, in an inert gas atmosphere at a temperature from 1700.degree. to 2100.degree. C.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: January 21, 1992
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Hiroshi Tashiro, Yoshio Nakamura, Masatoshi Ohnishi
  • Patent number: 5076563
    Abstract: An apparatus for controlling a sheet supplying device having a feeding device capable of feeding a copying sheet from a plurality of stacked copying sheets in a sheet stacking portion and a reversing device capable of returning copying sheets desired not to be fed at an instance of feeding process includes an unit for applying a rotational driving force to the feeding device so as to draw a copying sheet out of the stacked copying sheets in the sheet stacking portion by rotating the feeding device in one direction, and an unit for applying a rotational driving force to the reversing device so as to return a copying sheet desired not to be fed to the sheet stacking portion at a time when a plurality of copying sheets are simultaneously fed out from the sheet stacking portion by rotating the reversing device in another direction.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: December 31, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toyoaki Namba, Motoaki Okitsu, Ken-ichi Iwamoto, Yoshikado Yamada, Yuuji Sugimoto
  • Patent number: 5077575
    Abstract: An image forming apparatus which includes a bucket for accommodating a cartridge holding a roll of a photosensitive sheet and a take-up shaft for taking up the photosensitive sheet after use, the bucket having an exposure plate disposed above the cartridge, a slidable means engageable with a slidable means provided on the image forming apparatus so as to enable the bucket to be slidably mounted in and dismounted from the image forming apparatus, and a positioning means for securing the exposure plate in its optically proper position.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: December 31, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masao Narumiya, Tsuyoshi Takeno, Fumio Shimazu
  • Patent number: 5075731
    Abstract: A transfer roller device for transferring onto a copy paper sheet a full color toner image formed on an intermediate transfer belt. A rear-surface electrode roller disposed at the opposite side to a transfer roller with the intermediate transfer belt positioned in between, is divided into a plurality of cylinder members, and at least one of the cylinder members corresponding to the size of a copy paper sheet is separately connected to ground. With the arrangement, occurrence of an excess current through a portion of the intermediate transfer belt carrying no copy paper sheet thereon is eliminated, thereby preventing a filming phenomenon. In another arrangement, a plurality of rear-surface electrode rollers are disposed at respective positions associated with a plurality of respective copying speeds which are set according to copy paper sheets. Thus, a voltage to be applied between the transfer roller and the rear-surface electrode roller is maintained constant regardless of different copying speeds.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: December 24, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Taisuke Kamimura, Yasutaka Maeda, Tuyoshi Miyamoto, Katsuhiro Nagayama, Hideyuki Nishimura, Natsuko Tanaka
  • Patent number: 5072255
    Abstract: An optically variable magnification mechanism that comprises a motor which rotates in one direction. A rotary cam is arranged so as to be rotated in one direction by the motor and has cam surfaces assigned on a periphery thereof corresponding to a plurality of magnification steps. A cam drive unit is arranged for transmitting a rotary force from the motor to the cam. An optical system is movable between positions corresponding to the magnification steps. A transmission system is arranged for transmitting a rotary force of the cam to the optical system to change the positions of the optical system sequentially.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: December 10, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Akira Kono
  • Patent number: 5068841
    Abstract: A magneto-optical recording/reproducing device having a slider provided with a magnetic head. The slider floats over a magneto-optical disk when the magneto-optical disk is in rotation. The slider is supported by a suspension. A depressing force is exerted on the slider vertically by the suspension. The depressing force is adjusted by an adjustment device so that the depressing force due to the suspension increases as the slider shifts to an outer part of the magneto-optical disk from an inner part. Thus a floating gap between the slider and the magneto-optical disk becomes substantially constant irrespective of a radial position on the magneto-optical disk and a magnetic field intensity applied onto the magneto-optical disk from the slider (the magnetic head) becomes constant. As a result, stable recordomg, reproducing and erasing operations can be carried out.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: November 26, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Junichiro Nakayama, Hiroyuki Katayama, Kenji Ohta
  • Patent number: 5065995
    Abstract: A sheet supplying device supplies a sheet to a sheet supplied apparatus which designates the size and transport direction of the sheet. The sheet supplying device includes a movable cassette for placing the sheet thereon and movable to at least two transport positions so as to transport the sheet therefrom in at least two transport directions, a fixed cassette for placing the sheet thereon and fixed in one transport position so as to transport the sheet therefrom in one transport direction, a transport device for transporting the sheet from each of the movable cassette and the fixed cassette to the sheet supplied apparatus.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: November 19, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Ken Iwamoto, Atsushi Narukawa