Patents by Inventor Kenichi Nakajima

Kenichi Nakajima 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: 6132119
    Abstract: A tape cartridge holds a roll of printing tape. The tape cartridge is removably loaded in a tape printing apparatus. The printing tape is fed by being unwound from the tape cartridge. Printing is carried out on the printing tape unwound from the tape cartridge by an ink jet printing method. A drive roller for feeding the printing tape is arranged in the apparatus. A driven roller associated with the drive roller is arranged in the tape cartridge. The drive roller and the driven roller press the printing tape therebetween for feeding the printing tape by rotation, in a state of the tape cartridge being loaded in the apparatus body.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: October 17, 2000
    Assignee: Seiko Epson Corporation
    Inventors: Kenichi Nakajima, Hideki Oikawa, Kunihiko Matsuhashi
  • Patent number: 6088300
    Abstract: A calendar electronic timepiece comprises a signal generating circuit for generating a date signal, a driving circuit for outputting a driving signal in accordance with the date signal generated by the signal generating circuit, and an ultrasonic motor driven by the driving signal outputted by the driving circuit. The ultrasonic motor is comprised of a piezoelectric vibrator having an electrode pattern and being driven by the driving signal outputted from the driving circuit to undergo expansion and contraction movement, a vibrating member connected to the piezoelectric vibrator and vibrationally driven by expansion and contraction movement of the piezoelectric vibrator, and a date dial disposed on the vibrating member to be frictionally driven by expansion and contraction movement of the piezoelectric vibrator.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: July 11, 2000
    Assignee: Seiko Instruments Inc.
    Inventors: Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Mitsuru Ishii, Yoshio Koyama, Shigeo Suzuki, Masayuki Kawata, Yuko Sasaki, Eriko Takakuwa
  • Patent number: 6088302
    Abstract: To provide an electronic timepiece enabling reliable detection of a state of rotation of an indication wheel such as a date dial.An ultrasonic motor 1130 has an ultrasonic rotor pinion 1134b. A date dial 1120 is disposed on a main plate 1102 in such a way as to rotate relative thereto. The ultrasonic rotor pinion 1134b is meshed with an intermediate date driving gear wheel 1142a. A date driving wheel 1150 is rotatably disposed on the main plate 1102. A date driving gear wheel 1150b is meshed with an intermediate date driving pinion 1142b. A date driving gear portion 1150b is meshed with a dial gear portion 1120a. A contact point spring 1160 is disposed on a spring guiding portion 1150d. The contact point spring 1160 rotates integrally with the date driving wheel 1150 through the rotation of the date driving wheel 1150. The state of rotation of the date driving wheel 1150 can be detected by contact of the contact point spring 1160 with the contact point pattern 1174.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: July 11, 2000
    Assignee: Seiko Instruments Inc.
    Inventors: Kenichi Nakajima, Takayuki Satodate, Akihiro Matouge, Akihiko Inada, Mitsuru Ishii, Yoshio Koyama, Shigeo Suzuki, Masayuki Kawata, Yuko Sasaki, Eriko Takakuwa
  • Patent number: 6062749
    Abstract: A dial input device is provided. A dial is rotatably arranged on a support member and has a plurality of kinds of characters circumferentially allocated thereto. n (n.gtoreq.1) first contact member(s) arranged in a manner concentric with the dial is/are circumferentially divided into s (s.gtoreq.2) divisional parts and formed by electrically conductive portions and electrically non-conductive portions arranged in a mixed manner. A second contact member is arranged in a manner concentric with the dial and circumferentially divided into m (m.gtoreq.2) parts each of which is formed by an electrically conductive portion alone. n.times.s first brushes are arranged on the dial in a manner circumferentially corresponding to the s divisional parts of each of the n first contact member(s). A second brush is arranged on the dial in a manner corresponding to the second contact member. The characters are expressed by k (k.ltoreq.2.sup.(n.times.s) .times.m) identifying patterns out of 2.sup.(n.times.s) .times.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: May 16, 2000
    Assignee: Seiko Epson Corporation
    Inventors: Hideki Oikawa, Hiroshi Kuriyama, Eiji Tukahara, Kenichi Nakajima, Kenji Watanabe, Takanobu Kameda, Tomoyuki Shimmura
  • Patent number: 6025051
    Abstract: A plate-making sheet in the form of a strip having two longer-sides and two shorter-sides includes a base sheet and an adhesive sheet laminated on the base sheet. The adhesive sheet has a label portion formed in the middle thereof for being printed with an image. The label portion is defined by a cutting line formed in the adhesive sheet. A plate-making sheet group includes a plurality of types of plate-making sheets having respective label portions different from each other, which are distinguished from each other in respect of color of at least one of the base sheet and the adhesive sheet. A printing apparatus for printing a stamp image on the label portion of the plate-making sheet comprises a printing mechanism for printing a stamp image on the label portion, a feed mechanism for feeding the plate-making sheet through the printing mechanism, and a sensor for detecting feeding of the plate-making sheet into the printing mechanism.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: February 15, 2000
    Assignees: Seiko Epson Corporation, King Jim Co., Ltd.
    Inventors: Yoshiyuki Yanagisawa, Hiroshi Kuriyama, Eiji Tukahara, Kenichi Nakajima, Hideki Oikawa, Kenji Watanabe, Takanobu Kameda, Tomoyuki Shimmura
  • Patent number: 6016749
    Abstract: A stamp-making apparatus is provided in which a transparent presser plate is arranged such that the presser plate is parallel with a stamp-making object material, an ink ribbon having a stamp image formed thereon is urged against the stamp-making object material via the presser plate, and exposure of the stamp-making object material to light is carried out via the ink ribbon as a mask. A ribbon feeder rolls out an ink ribbon wound around one end portion thereof to a position facing the stamp-making object material, and then rolls up the ink ribbon around another end portion thereof. A relative translation of the presser plate and the stamp-making object material is made toward each other by moving at least one of the presser plate and the stamp-making object material to thereby urge the ink ribbon against the stamp-making object material. Guide means guides the ink ribbon when the ink ribbon is fed, to space between the presser plate and the stamp-making object material.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: January 25, 2000
    Assignee: Seiko Epson Corporation and King Jim Co., Ltd.
    Inventors: Eiji Tukahara, Hideki Oikawa, Kenichi Nakajima, Hiroshi Kuriyama, Kenji Watanabe, Takanobu Kameda, Chieko Aida, Tomoyuki Shimmura
  • Patent number: 6006661
    Abstract: A stamp-making apparatus is provided in which a transparent presser plate is arranged such that the presser plate is parallel with a stamp-making object material, an ink ribbon having a stamp image formed thereon is urged against the stamp-making object material via the presser plate, and exposure of the stamp-making object material to light is carried out via the ink ribbon as a mask. A ribbon feeder rolls out an ink ribbon wound around one end portion thereof to a position facing the stamp-making object material, and then rolls up the ink ribbon around another end portion thereof. A relative translation of the presser plate and the stamp-making object material is made toward each other by moving at least one of the presser plate and the stamp-making object material to thereby urge the ink ribbon against the stamp-making object material. A guide guides the ink ribbon when the ink ribbon is fed, to space between the presser plate and the stamp-making object material.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: December 28, 1999
    Assignees: Seiko Epson Corporation, King Jim Co., Ltd.
    Inventors: Eiji Tukahara, Hideki Oikawa, Kenichi Nakajima, Hiroshi Kuriyama, Kenji Watanabe, Takanobu Kameda, Chieko Aida, Tomoyuki Shimmura
  • Patent number: 5934191
    Abstract: An electronic apparatus has a body formed with a pocket for mounting a plurality of types of access objects each having an end surface for being accessed, therein from above. The body has an access block arranged therein for accessing the end surface of each of the plurality of types of access objects. Main support bosses are provided in the pocket in a manner extending upward for having each of the access objects being fitted thereon. The access object is comprised of a receiving member having an access surface (the end surface) for being accessed by the access block, a receiving member-attaching portion to which the receiving member is attached, and a receiving member-holding part for holding the receiving member-attaching portion. A cap is removably fitted on the access object in a manner such that the receiving member thereof is covered by the cap.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: August 10, 1999
    Assignees: Seiko Epson Corporation, King Jim Co., Ltd.
    Inventors: Eiji Tukahara, Hiroshi Kuriyama, Kenichi Nakajima, Hideki Oikawa, Kenji Watanabe, Takanobu Kameda, Tomoyuki Shimmura
  • Patent number: 5779373
    Abstract: A ribbon cartridge device for electronic equipment includes a ribbon cartridge for being removably mounted in the electronic equipment. The ribbon cartridge comprises a supply reel, a take-up reel, and a path-setting member for bending a path of the ink ribbon along which the ink ribbon is routed between the supply reel and the take-up reel, each arranged within a casing. The path-setting member is capable of changing the path of the ink ribbon.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: July 14, 1998
    Assignees: Seiko Epson Corporation, King Jim Co., Ltd.
    Inventors: Eiji Tukahara, Hideki Oikawa, Kenichi Nakajima, Hiroshi Kuriyama, Kenji Watanabe, Takanobu Kameda, Chieko Aida, Tomoyuki Shimmura
  • Patent number: 5520382
    Abstract: A sheet guide surface is provided with an air intake port through which a circumferential portion of a fan rotor of a fan for drawing air radially inwardly through the air intake port projects above the sheet guide surface so that the sheet is drawn onto the sheet guide surface at the position of the air intake port while contacting the circumferential portion of the fan rotor thereby being applied with a flexible driving force in the sheet transfer direction due to the rotation of the fan rotor.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: May 28, 1996
    Assignee: Riso Kagaku Corporation
    Inventor: Kenichi Nakajima
  • Patent number: 5425399
    Abstract: A weft picking system for an air jet loom is provided with a microcomputer as a controller. The weft picking system comprises a weft traction device including a pair of rollers, one of which is driven by an inverter motor. A weft yarn fed from a weft measuring and storing device can be placed between the rollers to be drawn toward a weft posture regulating nozzle. The weft posture regulating nozzle is arranged to project the weft yarn into the shed of warp yarns and regulates the posture of the weft yarn under the influence of air jet ejected from the nozzle and from a plurality of sub-nozzles. The rollers always rotate during a weaving operation of the loom. A change-over device is provided to change the weft yarn from a first state of being placed between the rollers to a second state of separating from the rollers or vice versa.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: June 20, 1995
    Assignee: Nissan Texsys Co., Ltd.
    Inventors: Akio Shindo, Takao Ishido, Takatugu Kato, Ryozo Yuzawa, Masaichi Nishijima, Yuji Kato, Nobuhiko Hayashi, Takashi Ogasawara, Kenichi Nakajima, Tetsuhiro Kajiwara, Shogo Sasaki
  • Patent number: 5278364
    Abstract: A rotary switch permits the interrelation between the angle of rotation of a rotary switch knob and the angle of integral rotation of a rotor and a contact spring to be set as desired. A rotary switch knob and a rotor are respectively provided with a first gear and a second gear, and are linked together by these gears. The rotor carries a contact spring fixed thereto. When the ratio between the respective teeth numbers of the first and second gears is suitably set, the interrelation between the rotational angle of the rotary switch and that of the rotor and the integral contact spring can be set as desired.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: January 11, 1994
    Assignee: Seiko Epson Corporation
    Inventors: Fumihiro Misawa, Kenichi Nakajima