Patents Assigned to Kabushiki Kaisha Suwa Seikosha
  • Patent number: 4838707
    Abstract: An electronic thermometer is provided in which the number of pulses counted in a first count and the number of pulses counted in a second count are respectively proportional to the resistance of a reference resistance and that of a thermosensing element. When the first counted value is to be adjusted so as to realize the absolute value adjustment of the thermometer, the difference between the resistance of the thermosensing element and the resistance of the reference resistor is adjusted by varying the number of counts in a counter upon whose content the timing of the second count depends. Accordingly, the absolute value precision adjustment of the electronic thermometer is realized by providing an initial logic adjustment circuit in which the number of the first clock counts is appropriately varied.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: June 13, 1989
    Assignees: Shiojiri Kogyo Kabushiki Kaisha, Kabushiki Kaisha Suwa Seikosha
    Inventors: Masaki Ozawa, Toshiyuki Hosaka, Masayuki Yoshizawa
  • Patent number: 4583866
    Abstract: A watch dial is provided comprising a plastic or metal base plate. The base plate has thereon an uneven portion embodying a surface design, letter, window, symbol or mark. The uneven portion is formed by exposing photosensitive resin to ultraviolet light. The surface of the photosensitive resin portion of the base plate is metal-plated.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: April 22, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Masami Kasai, Masao Kanai, Akira Okubo
  • Patent number: 4582395
    Abstract: An active matrix assembly for a liquid crystal display device utilizing an MIS (metal-insulator-semiconductor) transistor array is provided. The active matrix assembly includes a transparent substrate, a first thin layer of silicon disposed thereon, an insulating film on the first silicon layer and a second thin layer of silicon disposed on the insulating film. The layers are selectively etched for forming a gate and the silicon layers are doped for forming a MOS transistor for a display element of the device. The two silicon layers and insulating material intersect to form capacitors with the upper electrode of the storage capacitor being the driving electrode for the liquid crystal. An active matrix assembly constructed and arranged in accordance with the invention permits 90 percent or more of incident light coming from above to pass therethrough.
    Type: Grant
    Filed: July 30, 1981
    Date of Patent: April 15, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Shinji Morozumi
  • Patent number: 4580883
    Abstract: Ophthalmic lenses wherein the curvature of the refractive surface changes along the principal meridian between the optical center of a far vision viewing zone and the optical center of a near vision viewing zone in accordance with a predetermined law is provided. The refractive surfaces of the lenses are divided into a far vision viewing zone, an intermediate vision viewing zone and a near vision viewing zone by a curve which intersects the principal meridian curve at the optical center of the far vision viewing zone and a second curve which intersects the principal meridian curve at the optical center of the near vision viewing zone. An angle made by a line normal to the refractive surface from each point of an intersection of an arbitrary plane which is parallel to a plane including the principal meridian curve and the refractive surface of the lens and a plane including the principal meridian curve is constant in the far vision viewing zone and in the near vision viewing zone.
    Type: Grant
    Filed: December 3, 1981
    Date of Patent: April 8, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Toshihide Shinohara
  • Patent number: 4576851
    Abstract: A semiconductor substrate including a single-crystal mono-crystalline film on an insulating film and methods of fabrication are provided. The insulating film has an opening to expose the single-crystal material to a polycrystalline or amorphous semiconductor layer on the insulating film for growing mono-crystals upon application of heat slightly less than the melting point of the semiconductor and applying an energy beam, such as an electron beam or light beam to the semiconductor film. The semiconductor-insulator-semiconductor provides improved substitutes for Silicon On Sapphire formed by the epitaxial method.
    Type: Grant
    Filed: April 16, 1985
    Date of Patent: March 18, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Seiichi Iwamatsu
  • Patent number: 4577203
    Abstract: An ink jet recording apparatus for projecting ink onto a recording medium. The apparatus includes an ink jet head adapted to receive ink having an ejection nozzle for ejecting ink towards said recording medium. An ink tank means stores ink and supplies the stored ink to the ink jet head. A switching mechanism selectively switches between a first condition where the ink tank is in fluid communication with the ink jet head and a second condition where the ink jet head is vented to atmosphere. A nozzle cap selectively covers the ejection nozzle. A suction mechanism creates a suction in the cap. The cap draws ink and air out of the ink jet head through the ejection nozzle to prevent clogging and remove air bubbles from the ink.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: March 18, 1986
    Assignees: Epson Corporation, Kabushiki Kaisha Suwa Seikosha
    Inventor: Yoshikazu Kawamura
  • Patent number: 4575743
    Abstract: A first ROM is comprised of a transistor matrix. The polycrystalline silicon forming the gates of the transistors of the first ROM and another polycrystalline silicon region are arranged in a matrix, and diodes are formed by PN junctions at the crossing points. Thus, a second ROM is comprised of a diode matrix. The two ROMS are formed in layers on one common plane and each ROM can retain different information, independently of each other.
    Type: Grant
    Filed: April 26, 1983
    Date of Patent: March 11, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Masami Hashimoto
  • Patent number: 4575777
    Abstract: A magnetic recording and reproducing head which operates in a perpendicular magnetization mode which records and reproduces information on a magnetic recording medium. The head includes first and second members spaced apart so as to define a gap therebetween through which said medium can travel. The first member includes a magnetic pole of high permeable magnetic thin film having a tip which faces the medium. A first coil is wound around the thin film and the second member includes a second coil. The tip of the thin film faces the second coil. The second member and its second coil and thin film are used for recording whereas the thin film and first coil are used for reproducing.
    Type: Grant
    Filed: December 2, 1982
    Date of Patent: March 11, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Minoru Hosokawa
  • Patent number: 4574323
    Abstract: A flexible magnetic disk drive includes interengaging members which necessitate a sequence of operations in use which assure proper disk positioning and avoid damage to the disk and magnetic head. The disk is clamped for rotation between a center pulley and a clutch plate which is compressed by a plate spring. A disk ejection mechanism is provided.
    Type: Grant
    Filed: October 19, 1982
    Date of Patent: March 4, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Masao Momose
  • Patent number: 4571102
    Abstract: A printing device for use in a wire dot printer having a plurality of printing wires. The printing device includes a frame and a carriage slideably supported on the frame for lateral translation thereacross. A print head is supported on the carriage and includes a nose portion which supports the plurality of printing wires. First and second holders are disposed on the carriage so that the nose portion is intermediate the first and second holders. A ribbon mask constructed from a resilient material is disposed on the nose portion. The ribbon mask is held in position by engagement with the first and second holders. The carriage includes a projection extending towards the ribbon mask. The ribbon mask is further supported by the projection. In addition, the ribbon mask may include a plurality of projections which extend towards and abut against the nose portion to keep the surface of the ribbon mask spaced from the nose portion to permit travel of an ink ribbon therebetween.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: February 18, 1986
    Assignees: Epson Corporation, Kabushiki Kaisha Suwa Seikosha
    Inventors: Toshiaki Ono, Yoshito Kusabuka
  • Patent number: 4570115
    Abstract: The voltage regulator, entirely of monolithic integrated circuit construction, has an output voltage with a temperature gradient similar to that of the saturation and threshold voltages of liquid crystal elements. Constant current flows through temperature sensitive resistive elements in series with temperature insensitive resistance elements. The output voltage taken across at least a portion of the resistance elements has a voltage/temperature characteristic similar to that of the temperature sensitive elements. Both the level of the output voltage and the temperature gradient of the output voltage are independently controllable and independent of source voltage variations. Buffer circuits may be used between the output of the regulator and load, and sampling techniques are also used to conserve energy by duty cycle operation of higher current circuit elements.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: February 11, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Toshiyuki Misawa, Tatsushi Asakawa
  • Patent number: 4567806
    Abstract: The sound generator applies an envelope to the note signal. Current to the sound producing element is controlled by a series transistor whose base is driven with a signal having a frequency corresponding to the musical note. The driving voltage applied to the base has a voltage amplitude corresponding to the voltage stored in a capacitor connected through a resistor and discharging through said resistor and the base of the transistor controlling the current to the sound producer.
    Type: Grant
    Filed: September 7, 1983
    Date of Patent: February 4, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Mitsuharu Kodaira
  • Patent number: 4567448
    Abstract: A variable frequency oscillator circuit adapted for stabilization of its free-running frequency comprises a first signal synthesizing circuit, first voltage-controlled oscillator, a phase-locked loop and reference signal generator, the phase-locked loop consisting of a second signal synthesizing circuit, second voltage-controlled oscillator, phase comparator and low-pass filter. The first and second signal synthesizing circuits have the same characteristics, and the first and second voltage-controlled oscillators have the same characteristics. The reference signal and output of the second voltage-controlled oscillator are input to the phase comparator. The comparator output is applied to the first and second signal synthesizing circuits. An external signal is applied to the first signal synthesizing circuit, and the output of the first voltage-controlled oscillator acts as the output of the variable frequency oscillator circuit.The principles are applied to reading data pulses from a floppy disk.
    Type: Grant
    Filed: August 4, 1983
    Date of Patent: January 28, 1986
    Assignees: Epson Corporation, Kabushiki Kaisha Suwa Seikosha
    Inventor: Masayuki Ikeda
  • Patent number: 4561739
    Abstract: A pair of trial spectacles for allowing a wearer to test the feeling and effect of a pair of spectacles and lenses before an actual pair is constructed. The trial spectacles include a frame member adapted to be supported on the face of a wearer having at least a first eye rim portion positioned in front of one of the eyes of wearer when the frame member is supported on the face of the wearer. The first rim portion is adapted to removably support a first lens. The first lens is horizontally slidable in the first portion so that the first lens can be horizontally adjusted to meet the wearer's visual requirements.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: December 31, 1985
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Sakiho Okazaki
  • Patent number: 4560982
    Abstract: A liquid crystal display device having non-linear characteristics provides uniform quality in a matrix display. In driving rows and columns of picture elements the duty ratio is substantially increased by shortening the time in which the picture element is selected and charged for lighting. Charging time is less than the half frame period divided by the number of columns to be driven in the half frame, and more rows of elements can be driven in the half frame period. The portion of time actually used for charging is designated as a fine scanning period. By modulating the voltage levels across the liquid crystal layer during fine scanning periods when the crystal element is not selected, effective voltage across the picture elements is maintained with little variation regardless of the number of picture elements driven on the same signal line. A gray scale display can be provided.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: December 24, 1985
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Tomio Sonehara, Masami Murata, Tadashi Ota
  • Patent number: D282256
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: January 21, 1986
    Assignees: Epson Corporation, Kabushiki Kaisha Suwa Seikosha
    Inventor: Masahiko Mizuno
  • Patent number: D282259
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: January 21, 1986
    Assignees: Epson Corporation, Kabushiki Kaisha Suwa Seikosha
    Inventors: Chiaki Kuroiwa, Masahiko Mizuno
  • Patent number: D282843
    Type: Grant
    Filed: May 19, 1983
    Date of Patent: March 4, 1986
    Assignees: Epson Corporation, Kabushiki Kaisha Suwa Seikosha
    Inventor: Masaki Kurihara
  • Patent number: D284170
    Type: Grant
    Filed: January 10, 1984
    Date of Patent: June 10, 1986
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventor: Mieko Kurimura
  • Patent number: D284869
    Type: Grant
    Filed: July 17, 1984
    Date of Patent: July 29, 1986
    Assignees: Epson Corporation, Kabushiki Kaisha Suwa Seikosha
    Inventor: Masaki Kurihara