Patents by Inventor Takeshi Saitou

Takeshi Saitou 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).

  • Publication number: 20040253818
    Abstract: A method accurately inspects whether an IC inlet to be inspected is non-defective or defective in a state in which a large number of IC inlets are formed over an insulating film. The inspection of IC inlets formed over an insulating film is performed by transmitting microwaves to the IC inlets from antennas. To selectively irradiate the microwaves to only one IC inlet to be inspected out of a large number of IC inlets that are formed over the insulating film, a radio-wave absorbing plate is inserted between the insulating film and the antennas, and the microwaves are irradiated to the IC inlet through a slit formed in the radio-wave absorbing plate. The radio-wave absorbing plate is configured such that the slit, which is substantially equal to the IC inlet in size, is formed in a portion of a planar plate that is formed of a radio-wave absorber.
    Type: Application
    Filed: January 9, 2004
    Publication date: December 16, 2004
    Inventors: Michio Okamoto, Hisao Yamagata, Nobuo Murakami, Keizo Kakitani, Hidehiro Fujiwara, Takeshi Saitou
  • Publication number: 20040233625
    Abstract: An adapter for mounting an optionally-additional functional component onto a mobile wireless communication device (on which a battery for electrically energizing the mobile wireless communication device is mountable), comprises a joint portion connectable to the mobile wireless communication device so that the adapter is attached through the joint portion to the mobile wireless communication device in a removable manner, and a component holding portion adapted to hold the optionally-additional functional component on the component holding portion.
    Type: Application
    Filed: February 25, 2004
    Publication date: November 25, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Takeshi Saitou, Masaki Uesugi, Takashi Tobita
  • Patent number: 6763208
    Abstract: A photoreceptor regenerating apparatus for regenerating a photoreceptor for use in an image forming apparatus including a grinding member that grinds a surface of a used photoreceptor, a photoreceptor measuring device that measures a surface condition of the used photoreceptor, and a grinding condition setting device that sets grinding conditions of the grinding member according to a measurement value of the photoreceptor measuring device.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: July 13, 2004
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinji Nagatsuna, Takeshi Saitou, Takeo Suda, Kenichi Shishido, Masaki Narita
  • Publication number: 20040126134
    Abstract: An image bearing member unit includes an image bearing member on which a toner image is formed, and a support member supporting the image bearing member such that the image bearing member protrudes through an opening formed in the support member. The image bearing member unit is drawn out of and put into a main body of an image forming apparatus. The image bearing member unit further includes a shutter for covering and uncovering the image bearing member protruding through the opening formed in the support member.
    Type: Application
    Filed: September 17, 2003
    Publication date: July 1, 2004
    Inventors: Hirohmi Harada, Takeshi Saitou
  • Patent number: 6749899
    Abstract: There are disclosed a method of preparing a prepreg comprising the steps of a impregnation process in which a thermosetting resin varnish is impregnated into a fiber base material and a drying step in which a solvent of the impregnated thermosetting resin varnish in the fiber base material is vaporized and the resin is semi-cured, wherein the drying step is carried out by moving the fiber base material into which the thermosetting resin varnish is impregnated with a tensile force of 3.0 N/cm or less; and a prepreg prepared by the method.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: June 15, 2004
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Takeshi Saitou, Akinori Hanawa, Takashi Matsuzaki, Morimichi Sudou
  • Patent number: 6727042
    Abstract: A photosensitive resin composition according to the invention includes (A) a photosensitive resin, (B) an epoxy resin, (C) a photopolymerization initiator, and (D) a polymerizable unsaturated compound and/or a solvent, which photosensitive resin (A) is obtained by allowing an epoxy resin (a) to react with a compound (b) having one primary alcoholic hydroxyl group and one functional group selected from a carboxyl group and a secondary amino group per molecule and an unsaturated monobasic acid (c) to yield a reaction product (I) and allowing a saturated or unsaturated polybasic acid anhydride (d) to react with the reaction product (I). The photosensitive resin composition of the invention is used as a solder resist in printed circuit boards, can be satisfactorily developed in a dilute basic aqueous solution and can yield a cured film that is excellent in flexibility, water resistance, adhesion, solder heat resistance, electroless gold plating resistance and pressure cooker test (PCT) resistance.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: April 27, 2004
    Assignee: Showa Highpolymer Co., Ltd.
    Inventors: Toru Takagi, Mitsuhiro Yada, Takeshi Saitou
  • Publication number: 20040057059
    Abstract: An electrophotographic image forming apparatus of the present invention includes a photoconductive drum provided with a photoconductive layer on its surface. A charger uniformly charges the surface of the drum while an exposing unit exposes the charged surface of the drum to thereby form a latent image on the drum. A developing device develops the latent image with toner by feeding the toner to the drum to thereby produce a corresponding toner image and collects residual toner left on the drum after image transfer. An image transferring device transfer the toner image from the drum to an intermediate image transfer body. An air conditioning unit sends dehumidified, air-controlled air to a space around said photoconductive element.
    Type: Application
    Filed: July 3, 2003
    Publication date: March 25, 2004
    Inventors: Tetsuroh Miura, Katsuaki Miyawaki, Takeshi Saitou, Takeo Suda, Yasushi Nakazato, Yasuo Suzuki
  • Publication number: 20040013442
    Abstract: An electrophotographic image forming apparatus of the present invention includes a frame, a photoconductive drum disposed in the frame, and an air conditioning device for removing moisture around the drum inside the frame. The drum has a wear-resistant, durable surface layer that wears by an amount of 0.05 &mgr;m to 0.5 &mgr;m for 100,000 rotations.
    Type: Application
    Filed: June 13, 2003
    Publication date: January 22, 2004
    Inventors: Yasuo Suzuki, Satoshi Igari, Katsuaki Miyawaki, Yasushi Nakazato, Takeo Suda, Tetsuroh Miura, Takeshi Saitou
  • Publication number: 20030161656
    Abstract: An image forming apparatus is disclosed including at least a plurality of image bearing members, a plurality of image forming units each including plural image forming members for operating image forming steps onto each of the image bearing members, and a further image bearing member, which are held collectively on an image bearing member holding component, image forming unit holding component and second image bearing member holding component, respectively.
    Type: Application
    Filed: January 27, 2003
    Publication date: August 28, 2003
    Inventors: Tetsuroh Miura, Takeshi Saitou
  • Publication number: 20030094232
    Abstract: There are disclosed a method of preparing a prepreg comprising the steps of a impregnation process in which a thermosetting resin varnish is impregnated into a fiber base material and a drying step in which a solvent of the impregnated thermosetting resin varnish in the fiber base material is vaporized and the resin is semi-cured, wherein the drying step is carried out by moving the fiber base material into which the thermosetting resin varnish is impregnated with a tensile force of 3.0 N/cm or less; and a prepreg prepared by the method.
    Type: Application
    Filed: September 3, 2002
    Publication date: May 22, 2003
    Inventors: Takeshi Saitou, Akinori Hanawa, Takashi Matsuzaki, Morimichi Sudou
  • Publication number: 20030087189
    Abstract: A photosensitive resin composition according to the invention includes (A) a photosensitive resin, (B) an epoxy resin, (C) a photopolymerization initiator, and (D) a polymerizable unsaturated compound and/or a solvent, which photosensitive resin (A) is obtained by allowing an epoxy resin (a) to react with a compound (b) having one primary alcoholic hydroxyl group and one functional group selected from a carboxyl group and a secondary amino group per molecule and an unsaturated monobasic acid (c) to yield a reaction product (I) and allowing a saturated or unsaturated polybasic acid anhydride (d) to react with the reaction product (I). The photosensitive resin composition of the invention is used as a solder resist in printed circuit boards, can be satisfactorily developed in a dilute basic aqueous solution and can yield a cured film that is excellent in flexibility, water resistance, adhesion, solder heat resistance, electroless gold plating resistance and pressure cooker test (PCT) resistance.
    Type: Application
    Filed: July 11, 2002
    Publication date: May 8, 2003
    Inventors: Toru Takagi, Mitsuhiro Yada, Takeshi Saitou
  • Patent number: 6560414
    Abstract: In a photoreceptor for an image forming apparatus including a charging device, a relationship between a thickness “A” of a surface portion of a photosensitive layer abraded by image forming operations, a thickness “B” of a portion of the photosensitive layer ground by an operation of grinding the abraded surface of the photosensitive layer, a number of times “n” the operation of grinding the abraded surface of the photosensitive layer has been executed, and an original photosensitive layer thickness “C” of the photoreceptor is set such that a thickness “D” of a remaining portion of the photosensitive layer after having been ground which is obtained by equation: D=C−[(A+B)×n+A], is equal to or greater than a thickness of the photosensitive layer in which leakage from the charging device to the photoreceptor does not occur, so that the photoreceptor may be reused.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: May 6, 2003
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeo Suda, Takeshi Saitou, Masaki Narita, Shinji Nagatsuna, Kenichi Shishido
  • Publication number: 20020136565
    Abstract: A photoreceptor regenerating apparatus for regenerating a photoreceptor for use in an image forming apparatus including a grinding member that grinds a surface of a used photoreceptor, a photoreceptor measuring device that measures a surface condition of the used photoreceptor, and a grinding condition setting device that sets grinding conditions of the grinding member according to a measurement value of the photoreceptor measuring device.
    Type: Application
    Filed: March 22, 2002
    Publication date: September 26, 2002
    Inventors: Shinji Nagatsuna, Takeshi Saitou, Takeo Suda, Kenichi Shishido, Masaki Narita
  • Publication number: 20020090221
    Abstract: In a photoreceptor for an image forming apparatus including a charging device, a relationship between a thickness “A” of a surface portion of a photosensitive layer abraded by image forming operations, a thickness “B” of a portion of the photosensitive layer ground by an operation of grinding the abraded surface of the photosensitive layer, a number of times “n” the operation of grinding the abraded surface of the photosensitive layer has been executed, and an original photosensitive layer thickness “C” of the photoreceptor is set such that a thickness “D” of a remaining portion of the photosensitive layer after having been ground which is obtained by equation: D=C−[(A+B)×n+A], is equal to or greater than a thickness of the photosensitive layer in which leakage from the charging device to the photoreceptor does not occur, so that the photoreceptor may be reused.
    Type: Application
    Filed: November 21, 2001
    Publication date: July 11, 2002
    Inventors: Takeo Suda, Takeshi Saitou, Masaki Narita, Shinji Nagatsuna, Kenichi Shishido
  • Patent number: 5543607
    Abstract: In a check-out system, in which a purchaser himself who intends to purchase commercial products performs a check-out processing, having a commercial product casted portion, a stocker for stocking the commercial products, a transport unit for transporting the commercial product from the commercial product casted portion to the stocker, and a commercial product identifying unit located between the commercial product casted portion and the stocker for identifying the commercial product transported from the commercial product casted portion, the commercial product casted portion is provided with a commercial product code inputting unit for inputting a commercial product code, and a commercial product detecting unit for detecting that the commercial product is put on the transport path, and the commercial product identifying unit is provided with a commercial product code reading unit for reading the commercial product code of the commercial product being transported; and a first mode in which when the commercial
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: August 6, 1996
    Assignees: Hitachi, Ltd., Hitachi Computer Engineering Co, Ltd.
    Inventors: Kiyoshi Watanabe, Yasuhiro Abe, Masaho Sakamoto, Takeshi Saitou, Takayoshi Ishii, Yukio Akimoto, Hironori Kashiki, Masao Kato
  • Patent number: 5126935
    Abstract: A POS terminal device which performs the function of a cash register upon input of a commodity code, with date and hour data included in the commodity code being checked at the time of data input and a caution indication that the term of validity has expired or the term of validity is approaching. The POS terminal device comprising time measuring device, input device for inputting a commodity code including date and hour data, judgment step for comparing date and hour data indicated by the time measuring device with date and hour data included in a commodity code inputted by the input device, and caution device, whereby in the case where the date and hour data indicated by the time measuring device represents a time not earlier than that represented by the date and hour data included in the commodity code as a result of comparison in the judgment step, and which informs an operator about that fact.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: June 30, 1992
    Assignees: Hitachi, Ltd., Hitachi Computer Engineering Co., Ltd.
    Inventors: Takeshi Saitou, Katsumi Yoshida, Ikuo Shimanuki, Kimikazu Sato, Shigenori Takagi
  • Patent number: D477294
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: July 15, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Minoru Ikeda, Yuichiro Kota, Asako Katayama, Takeshi Saitou, Takayuki Nakajima