Patents by Inventor Shuya Abe

Shuya Abe 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: 20060232638
    Abstract: An actuator includes a vibration plate area displaced by an electrostatic force, and electrodes facing each other via a first space in the vibration plate area The first space is formed by a sacrificial layer process using a sacrificial layer removing hole. A barrier as a fluid resistance is formed between the first space and a second space situated in the vicinity of the sacrificial layer removing hole.
    Type: Application
    Filed: March 11, 2005
    Publication date: October 19, 2006
    Applicant: RICOH COMPANY, LTD.
    Inventors: Takahiko Kuroda, Shuya Abe
  • Publication number: 20050264617
    Abstract: An electrostatic actuator has high-reliability and less variation in characteristics. An electrode (12a) is formed on a substrate (1), and a plurality of partition parts (50a) are formed on the electrode. A vibration plate (19) is formed on the partition parts (50a), and is deformable by an electrostatic force generated by a voltage applied to the electrode (12a) so that an air gap (14a) is formed between the partition parts (50a) by etching a part of a sacrifice layer (14) formed between the electrode (12a) and the vibration plate (19). The partition parts (50a) are formed of remaining parts of the sacrifice layer (14) after the etching.
    Type: Application
    Filed: August 5, 2003
    Publication date: December 1, 2005
    Inventors: Manabu Nishimura, Takahiko Kuroda, Shuya Abe, Makoto Tanaka, Mitsugu Irinoda, Kenichiroh Hashimoto
  • Patent number: 6568794
    Abstract: An ink-jet head includes a nozzle which discharges an ink drop to a recording medium. A discharging chamber communicates with the nozzle and contains ink therein. An oscillation plate is provided on a first substrate of silicon, the oscillation plate defining a bottom surface of the discharging chamber, the oscillation plate pressurizing the ink in the discharging chamber when the oscillation plate is actuated. An electrode is provided on a second substrate of silicon, the electrode facing the oscillation plate via a gap between the oscillation plate and the electrode. In the ink-jet head, at least one of a first bonding area of the first substrate and a second bonding area of the second substrate is provided with a silicon oxide film, and the silicon oxide film contains boron on a surface thereof where the first substrate and the second substrate are bonded together.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: May 27, 2003
    Assignee: Ricoh Company, Ltd.
    Inventors: Kunihiro Yamanaka, Kaihei Isshiki, Shuya Abe, Kouji Ohnishi
  • Patent number: 6406133
    Abstract: An electrostatic ink jet head includes nozzles, ink passages, a diaphragm that forms a part of the ink passages, individual electrodes that face the diaphragm. A driving voltage is applied between a common substrate formed on the diaphragm and the individual electrodes, thereby generating electrostatic force. The diaphragm is deformed by the electrostatic force. As a result, the ink in the ink passages are pressurized, so that ink droplets are discharged through the nozzles. Spacers are employed to form a gap between the diaphragm and each individual electrode. At least one of the spacers is made of the same material as the individual electrodes, so that the individual electrodes have high voltage resistance. Furthermore, voltage of both polarities can be used, and gap formation can be carried out with high precision through simpler production steps.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: June 18, 2002
    Assignee: Ricoh Company, Ltd.
    Inventor: Shuya Abe
  • Patent number: 6361149
    Abstract: An ink jet head includes a nozzle plate which has a nozzle hole. An ink-chamber substrate is provided on a back of the nozzle plate and includes an integrally-formed oscillation plate and a pressure chamber. The pressure chamber contains ink and is arranged to communicate with the nozzle hole. The oscillation plate defines a bottom of the pressure chamber. A counter-electrode substrate has an electrically-isolated counter electrode. The counter electrode is arranged to face the oscillation plate via a gap between the oscillation plate and the counter electrode. A dielectric layer is interposed between the ink-chamber substrate and the counter-electrode substrate. The dielectric layer is arranged to define the gap between the oscillation plate and the counter electrode. A pad metal piece is provided on a back of the counter electrode.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: March 26, 2002
    Assignee: Ricoh Company Ltd.
    Inventor: Shuya Abe
  • Publication number: 20020027576
    Abstract: An ink-jet head includes a nozzle which discharges an ink drop to a recording medium. A discharging chamber communicates with the nozzle and contains ink therein. An oscillation plate is provided on a first substrate of silicon, the oscillation plate defining a bottom surface of the discharging chamber, the oscillation plate pressurizing the ink in the discharging chamber when the oscillation plate is actuated. An electrode is provided on a second substrate of silicon, the electrode facing the oscillation plate via a gap between the oscillation plate and the electrode. In the ink-jet head, at least one of a first bonding area of the first substrate and a second bonding area of the second substrate is provided with a silicon oxide film, and the silicon oxide film contains boron on a surface thereof where the first substrate and the second substrate are bonded together.
    Type: Application
    Filed: August 27, 2001
    Publication date: March 7, 2002
    Applicant: Ricoh Company, Ltd.
    Inventors: Kunihiro Yamanaka, Kaihei Isshiki, Shuya Abe, Kouji Ohnishi