Patents Assigned to Seikosha Co., Ltd.
  • Instant photocopying apparatus
    Patent number: 5367357
    Abstract: An instant photocopying apparatus has a rod lens array for imaging fine areas of a manuscript on a photosensitive surface of an instant film. The apparatus has a carrier which is movable in a direction parallel to the manuscript. A flourescent lamp illuminates the manuscript. A filter holder is mounted to the lower end of the carrier, and an optical filter is provided for covering a light incidence portion of the rod lens array. The filter is removably mounted so as to enable changing the exposure and tint of the photosensitive surface of the instant film by mounting or dismounting the filter.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: November 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventors: Hiroshi Sudo, Masanori Fujita, Tadahiko Yamaoka, Hajime Oda, Hiroaki Ishida
  • Power supply control circuit for a display of a camera
    Patent number: 5365305
    Abstract: In a power supply control circuit for a display of a camera, when an operation signal is input, a control circuit determines that an operation mode exists and activates a boosting circuit and a voltage dividing circuit. The control circuit activates a power supply switching circuit to switch the power supply for a display unit driving circuit to the output of the voltage dividing circuit. In response to the input operation signal, the control circuit executes such processes as photographing, film rewinding and/or film loading by the operation of the rear lid switch, etc. Upon completion of the operation, the control circuit sets the mode to a waiting mode, and monitors the detection output of a battery voltage detecting circuit.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: November 15, 1994
    Assignee: Seikosha Co., Ltd.
    Inventors: Yoichi Seki, Hiroyuki Saito
  • Power toothbrush
    Patent number: 5359747
    Abstract: A power toothbrush has a superior brushing effect achieved by a brush member which is given a reciprocal motion in the axial direction while at the same time the brush member itself is given a rotary motion and which has a simple construction and is of low cost. A drive shaft is mounted in a casing in such a way that it is free to move in the axial direction. The rotation of a drive motor mounted inside the casing is converted into a reciprocating motion and transmitted to the drive shaft by a first transmission mechanism. A rotary brush member is rotatably mounted on the end of an attachment connected to the drive shaft, and the reciprocating motion, in the axial direction, of the attachment is converted into a rotary motion and transmitted to the rotary brush member by a second transmission mechanism.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: November 1, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Mikio Amakasu
  • Camera and film winding-up apparatus for camera
    Patent number: 5359376
    Abstract: An apparatus for winding up film in a camera has a direct current brush motor and an arrangement for producing a pulse train of pulses in response to the production of brush noise by said motor as it rotates. A control circuit is responsive to the pulse train of pulses to control the advancing and rewinding of the film as well as to detect the winding ends and to detect the occurrence of film loading errors.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: October 25, 1994
    Assignee: Seikosha Co., Ltd.
    Inventors: Masuo Ogihara, Yoichi Seki, Hiroyuki Saito
  • Alarm clock having an ambient light detector
    Patent number: 5359577
    Abstract: An alarm clock has an ambient light detector for controlling the illumination of a time displaying section. An alarm time which is selected by a user is stored in a memory. An alarm set switch is used to switch between alarm-on and alarm-off conditions. A photosensor detects the ambient light surrounding the alarm clock. The illumination of the displaying section is controlled so that the displaying section is illuminated only when the current time is within a predetermined time zone before the alarm time set by the user, the alarm set switch is in the alarm-on condition and the detected ambient light is below a predetermined level. The illumination of the displaying section is also controlled so that the display is illuminated while an alarm sound is being generated.
    Type: Grant
    Filed: September 1, 1993
    Date of Patent: October 25, 1994
    Assignee: Seikosha Co., Ltd.
    Inventors: Yukari Hoshino, Takahiro Izukawa, Hirobumi Okuyama
  • Distance measuring device for a camera
    Patent number: 5357309
    Abstract: A camera distance measuring device in which center, left and right peripheral beams for illuminating a subject are emitted from the center, left and right infrared-emitting diodes, respectively. First and second intermediate electrodes are provided between a pair of electrodes of a position sensitive device. An arithmetic circuit calculates center, left and right distance data from a composite output of a plurality of amplifiers delivered synchronously with each of the center, left and right peripheral beams incident on the position sensitive device.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: October 18, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Yoichi Seki
  • Watch dial
    Patent number: D351354
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 11, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D351355
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 11, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D351356
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 11, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D351357
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 11, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Akie Itoh
  • Watch dial
    Patent number: D351358
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 11, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D351359
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 11, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D351360
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 11, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch dial
    Patent number: D351361
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 11, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Akie Itoh
  • Watch dial
    Patent number: D351565
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: October 18, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Akie Ito
  • Wristwatch
    Patent number: D352467
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: November 15, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Akie Ito
  • Wristwatch
    Patent number: D352468
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: November 15, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko
  • Watch band
    Patent number: D352475
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: November 15, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Akie Ito
  • Clock
    Patent number: D352665
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: November 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Hisako Sugano
  • Watch band
    Patent number: D352670
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: November 22, 1994
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryoichi Kaneko