Patents by Inventor Takashi Kawabata

Takashi Kawabata 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: 5796095
    Abstract: An optical apparatus includes area sensors which are made to differ in picture element pitch between the central portions and the marginal portions thereof (the marginal portions are made to have a coarse picture element pitch since it is not very meaningful even if the picture element pitch is made fine because the performance of an optical system is limited, and the central portions are made to have a dense picture element pitch) and the changeover of the respective picture elements is electronically effected by reading-out means so that two kinds of object field information (detailed information and coarse information) may be obtained from the area sensors.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: August 18, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Matsuyama, Takashi Kawabata
  • Patent number: 5726556
    Abstract: A charging state display apparatus has a first means for indicating a charging amount and a second means for causing the first means to indicate a charging amount from a restart of charging.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: March 10, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Yoshihara, Takashi Kawabata, Kiyokazu Churei
  • Patent number: 5683347
    Abstract: A balloon catheter used for intra-aortic balloon pumping (IABP). In the balloon catheter, an outer diameter of a catheter tube is not made constant in the axial direction. Rather, the outer diameter of the catheter tube from a hemostatic valve to a bifurcation, the portion which is positioned outside the patient's blood vessel, is made 3 to 30 percent larger than the outer diameter of the catheter tube from the balloon portion to the hemostatic valve, which is positioned inside the patient's blood vessel. The bifurcation has a first passage and a second passage. The first passage is communicating with a shuttle gas port and is disposed straight along the direction of the axial center of the catheter tube.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: November 4, 1997
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Takashi Kawabata, Tetsuo Toyokawa, Kouichi Sakai
  • Patent number: 5659863
    Abstract: An image forming apparatus capable of preventing a transfer material detecting unit from making any detection error when the surface of a transfer drum becomes opaque, and restraining transfer film replacement intervals from being shortened with a simple constitution. The image forming apparatus is provided with a transfer material detecting unit for detecting conditions in which a transfer material is conveyed on a transfer material carrier, and a transfer material peeling unit for peeling the transfer material off the transfer material carrier by contacting the surface of the transfer material carrier. At least part of the transfer material peeling unit is disposed so that it at least linearly contacts the axial surface of the transfer material carrier at the same position as that of the transfer material detecting unit in the axial direction of the transfer material carrier.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: August 19, 1997
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takashi Kawabata, Nobuo Hyakutake, Fumio Furusawa, Masaaki Tokunaga, Ryoichi Tsuruoka
  • Patent number: 5659836
    Abstract: A predetermined sheet retaining plane C for absorbing a record sheet is provided in the circumferential surface of a sheet carrier, and a low-reflectivity area which is to be partially covered with the record sheet is provided at a leading portion of the sheet retaining plane C. Reflection photosensors for detecting the reflectivity of the sheet carrier including the low-reflectivity area are disposed around the sheet carrier. Whether a record sheet is held in the sheet retaining plane C is judged on the basis of detection signals of the photosensors.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: August 19, 1997
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Nobuo Hyakutake, Fumio Furusawa, Takashi Kawabata, Masaaki Tokunaga
  • Patent number: 5619739
    Abstract: This specification discloses an apparatus in which data regarding the proper lens positions of a diopter correcting lens when an observer is wearing spectacles and when the observer is not wearing spectacles are pre-stored in a memory circuit, the presence or absence of the spectacles is detected by a detecting circuit for detecting the state of an anterior eye part, the data in the memory circuit are extracted in conformity with this state, and the diopter correcting lens is moved on the basis of these data.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: April 8, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Kawabata
  • Patent number: 5617197
    Abstract: An image forming apparatus wherein a plurality of toner images having different colors from each other are successively formed on an image carrier, and the plurality of toner images formed on the image carrier are transferred to a transfer member carried on a transfer member carrier in such a condition that the plural toner images are successively overlapped with each other to thereby form an image, characterized in that the image forming apparatus comprises a pawl-shaped stripping member for stripping the transfer member from the transfer member carrier while being made in contact with a surface of the transfer member carrier at a predetermined timing; a volume electric resistance value of at least a portion of the pawl-shaped stripping member, which is made in contact with the transfer member, is selected to be greater than, or equal to 10 .OMEGA..cm, and smaller than, or equal to 10.sup.7 .OMEGA..cm; otherwise a surface electric resistance value thereof is selected to be greater than, or equal to 10 .
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: April 1, 1997
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takashi Kawabata, Nobuo Hyakutake, Fumio Furusawa, Masaaki Tokunaga, Ryoichi Tsuruoka
  • Patent number: 5594536
    Abstract: A rear end plate having openings is bonded to a rear end portion of a transfer film through urethane sponge. To attach the rear end portion of the transfer film to a coupling member of a frame of a transfer material carrying body, restricting portions of respective restricting members are fixed to the coupling member through the respective openings of the rear end plate. The restricting portions of the restricting members abut the top face of the rear end plate so as to restrict a radial movement of the rear end plate and allow its circumferential movement.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: January 14, 1997
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takashi Kawabata, Nobuo Hyakutake, Fumio Furusawa, Masaaki Tokunaga
  • Patent number: 5550628
    Abstract: A distance measuring apparatus provided with a plurality of light-emitting units and a plurality of light-receiving units. The light emission period of each of the light-emitting units is changed over at each predetermined period interval. A plurality of light-receiving elements constituting each light-receiving unit are constructed so as to receive the reflected lights from a plurality of distance measurement fields of view on an object to be photographed in a plurality of distance measurement zones obtained by dividing a range to be measured into several blocks. The input signal from each of the light-receiving elements in each of the distance measurement zones is changed over in synchronism with the light emission period of the light-emitting units and the output signals for the respective distance measurement zones are compared, whereby a distance data indicative of the distance measurement zone most approximate to the object distance is put out.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: August 27, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Kawabata
  • Patent number: 5523811
    Abstract: Camera apparatus for use with an automotive vehicle having a rear view mirror. The rear view mirror comprises a half-mirror, light reflected therefrom being visible to an occupant of the vehicle. A lens is disposed adjacent to the half-mirror and receives light passing through the half-mirror. An image pickup device is optically coupled to the lens and receives light passing therethrough to form an image signal corresponding to the received light.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: June 4, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Wada, Takashi Kawabata, Koichi Ohmori, Shigeru Ogino, Hideyuki Arai, Masaki Higashihara, Katsumi Azusawa
  • Patent number: 5460607
    Abstract: A balloon catheter used for intra-aortic balloon pumping (IABP). In the balloon catheter, an outer diameter of a catheter tube is not made constant in the axial direction. Rather, the outer diameter of the catheter tube from a hemostatic valve to a bifurcation, the portion which is positioned outside the patient's blood vessel, is made 3 to 30 percent larger than the outer diameter of the catheter tube from the balloon portion to the hemostatic valve, which is positioned inside the patient's blood vessel. The bifurcation has a first passage and a second passage. The first passage is communicating with a shuttle gas port and is disposed straight along the direction of the axial center of the catheter tube.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: October 24, 1995
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Takashi Kawabata, Tetsuo Toyokawa, Kouichi Sakai
  • Patent number: 5449342
    Abstract: An apparatus for assisting blood circulation includes an inflow tube which can be inserted into the right atrium from a peripheral blood vessel or which can be inserted into the left atrium from a peripheral blood vessel through the right atrium and the foramen ovale of the interarterial septum. An outflow tube is inserted into the aorta or into the carotid artery from a peripheral blood vessel to deliver the blood to the aorta or to the carotid artery. The outlet tube has an outlet for blood on the side of a upstream part of the tube and a blood pump which can take in the blood from the inflow tube and send out the blood to the outflow tube. When the former inflow tube is used, it also comprises an oxygen gas exchanger which exchanges carbon dioxide in the blood for oxygen. The apparatus can be very easily applied to the patient without thoracotomy to assist the circulation of blood.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: September 12, 1995
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Teruo Hirose, Takashi Kawabata
  • Patent number: 5356427
    Abstract: A temporary pacing catheter having an integrally attached temporary pacemaker function is disclosed. The pacemaker integrally built in this catheter for temporary pacing has a very small size and can be fixed to the body of a patient, and therefore, the patient can be transferred conveniently. Furthermore, if this catheter is packaged in the sterilized condition, problems or another's help required for the connection of the catheter to the pacemaker and the like operations in the conventional technique can be avoided, and therefore, the packaged catheter is suitably used for an emergency treatment. Moreover, if a balloon is attached and arranged so that when the balloon is inflated, the balloon envelopes an electrode at the distal end, the catheter can be caused to flow in the heart and blood vessel safely and promptly.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: October 18, 1994
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Takashi Kawabata, Kiyoshi Takagi, Masaru Miyahara, Takashi Tsuji, Shigeto Yoshida, Masayuki Horikawa, Fumiharu Iwai
  • Patent number: 5342500
    Abstract: An interfacial component detection apparatus has a plurality of electrodes spaced from one another on a first solid portion and a solid electrolytic layer on the first solid portion adjacent to an interfacial layer and covering the plurality of electrodes. An I/O device applies an electrical signal between the two electrodes and detects electrical signals from the electrodes. Components of the interfacial layer can be accurately and reliably detected by electrolysis and impedance measurements.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: August 30, 1994
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kazuhiko Inanaga, Hitoshi Ota, Shiro Yamauchi, Takashi Kawabata
  • Patent number: 5267059
    Abstract: A sheet scanner scans a predetermined image on each feedable paper. The sheet scanner scans every line of the predetermined image in order to generate image data corresponding to the predetermined image. The predetermined image consists of a plurality of lines. The sheet scanner has only two rollers, which are first and second rollers. Each paper is fed from the first roller to the second roller. A first tangential speed of the first roller is lower than a second tangential speed of the second roller so that each paper is spaced at a regular interval from the next paper. The sheet scanner can make a line density for every line of the image data constant. The line density is defined as being scanned lines in a predetermined period divided by a tangential speed of feeding the paper at that time. Therefore, blurred scanning never occur in the sheet scanner according to the present invention.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: November 30, 1993
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kawabata, Hiroyuki Kudose, Masato Nakajima
  • Patent number: 5231492
    Abstract: A system is disclosed for multiplexing, transmitting, and receiving picture data and sound data, wherein the picture data and sound data are balanced in a limited transmission capacity so as to obtain a better overall quality to effectively use the transmission ability of a medium. The content of at least one of the picture data and sound data are detected and used for control of the content of the transmission. The content of the transmission is controlled by changing data and sound to correct a difference between the processing speed of the picture data and the sound data, thereby improving the quality of a video conference system or the like where the transmission capacity is insufficient.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: July 27, 1993
    Assignee: Fujitsu Limited
    Inventors: Ryoichi Dangi, Takehiko Fujiyama, Toshiaki Usui, Takashi Kawabata
  • Patent number: 5212599
    Abstract: An electronic camera for synchronous recording of still pictures on a rotating record bearing medium in which initialization of an image pickup element and release of a shutter are carried out in response to a release actuating signal, and, after the shutter is closed, the photoelectric information of the image pickup element is synchronously recorded on the medium, whereby the performance of an anti-blooming control for the image pickup element is limited in between the initialization of the image pickup element and the start of the synchronous recording.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: May 18, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinji Sakai, Takashi Kawabata
  • Patent number: 5202556
    Abstract: A document reading apparatus comprises a light source part for generating a light beam which scans a document being transported to a reading position along a main scan line by a predetermined scan width, a photoconductive part for supplying a signal outputted when illuminated by a light beam from the light source part, the photoconductive part having a plurality of photoconductive elements aligned within a predetermined width parallel to the main scan line, an optical part for focusing a light beam reflected from the document at the reading position into a reduced light beam and for irradiating the reduced light beam to the photoconductive part by an optical width in a direction parallel to the main scan line. The photoconductive elements extend in a direction parallel to the main scan line by a width difference by which the predetermined width of the photoconductive elements is greater than the optical width of the optical part.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: April 13, 1993
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Kawabata, Shinobu Fukuoka, Daiya Teranishi, Eiji Kamijo, Seiji Hoshino
  • Patent number: 5154169
    Abstract: A pacing unit is disclosed. The pacing unit incorporates a catheter with pacing electrodes and leads extending from the pacing electrodes through the body of the catheter, a catheter holder for holding the catheter, and a pacer. Into the pacer, the connector plugs of the leads are plugged with the catheter holder fixedly attached to the pacer by interlocking means consisting of members fitting in respect to each other.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: October 13, 1992
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shinichi Miyata, Kiyoshi Takagi, Takashi Tsuji, Masayuki Horikawa, Takashi Kawabata
  • Patent number: 5121169
    Abstract: A recording paper length sensing apparatus for sensing a length of recording paper being fed in a paper feeding direction to an image forming apparatus. The recording paper length sensing apparatus comprises a table part on which the recording paper is loaded, the table part having a movable member and a fixed member and being mounted to a portion of the image forming apparatus to feed the recording paper to the image forming apparatus, a position of the movable member relative to the fixed member being adjustable to make an end portion of the movable member accord with a recording paper edge, a switching part for detecting a predetermined position of the movable member, the switching part being turned ON to generate a signal indicative of the recording paper length when the predetermined position of the movable member is detected, and a control part responsive to the signal from the switching part for recognition of the recording paper length.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: June 9, 1992
    Assignee: Ricoh Company, Ltd.
    Inventor: Takashi Kawabata