Patents by Inventor Mayumi Aida

Mayumi Aida 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).

  • Apparatus for declogging an ink jet recording apparatus
    Patent number: 5379061
    Abstract: In a recording apparatus with an ink jet print head which forms dots on a recording sheet by ink jets shot from an array of nozzles, a microcomputer determines whether a printing defect is a light printing defect caused by paper particles and dust adhering to the nozzles or a heavy printing defect caused by the entry of air bubbles into the ink flow paths. The determination is made on the basis of intervals of operating a print recovery button mounted on a chassis of the recording apparatus. For the light printing defect, the computer puts a cap member to the front face of the nozzles of the print head and applies a negative pressure to the nozzles, thereby to reduce the amount of ink emitted from the nozzles. For the heavy printing defect, the computer increases the amount of ink.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: January 3, 1995
    Assignee: Seiko Epson Corporation
    Inventors: Shuichi Yamaguchi, Seiji Mochizuki, Hideaki Suzuki, Satoshi Shinada, Mayumi Aida
  • Apparatus for declogging an ink jet recording apparatus
    Patent number: 5296876
    Abstract: In a recording apparatus with an ink jet print head which forms dots on a recording sheet by ink jets shot from an array of nozzles, a microcomputer determines whether a printing defect is a light printing defect caused by paper particles and dust adhering to the nozzles or a heavy printing defect caused by the entry of air bubbles into the ink flow paths. The determination is made on the basis of intervals of operating a print recovery button mounted on a chassis of the recording apparatus. For the light printing defect, the computer puts a cap member to the front face of the nozzles of the print head and applies a negative pressure to the nozzles, thereby to reduce the amount of ink emitted from the nozzles. For the heavy printing defect, the computer increases the amount of ink.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: March 22, 1994
    Assignee: Seiko Epson Corporation
    Inventors: Shuichi Yamaguchi, Seiji Mochizuki, Hideaki Suzuki, Satoshi Shinada, Mayumi Aida
  • Apparatus for declogging an ink jet recording apparatus
    Patent number: 5153614
    Abstract: In a recording apparatus with an ink jet print head which forms dots on a recording sheet by ink jets shot from an array of nozzles, a microcomputer determines whether a printing defect is a light printing defect caused by paper particles and dust adhering to the nozzles or a heavy printing defect caused by the entry of air bubbles into the ink flow paths. The determination is made on the basis of intervals of operating a print recovery button mounted on a chassis of the recording apparatus. For the light printing defect, the computer puts a cap member to the front face of the nozzles of the print head and applies a negative pressure to the nozzles, thereby to reduce the amount of ink emitted from the nozzles. For the heavy printing defect, the computer increases the amount of ink.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: October 6, 1992
    Assignee: Seiko Epson Corporation
    Inventors: Shuichi Yamaguchi, Seiji Mochizuki, Hideaki Suzuki, Satoshi Shinada, Mayumi Aida