Patents by Inventor Tatsunari Sato

Tatsunari Sato 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).

  • Image forming device having an image detector
    Patent number: 7460804
    Abstract: An image forming apparatus includes detecting means for detecting a toner image formed on an image carrier, and transport means for transporting a sheet. The detecting means is disposed on an inner side in a width of the image carrier, and on an outer side of a contact region with the transport means and the sheet, in a direction perpendicular to a transporting direction of the sheet.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: December 2, 2008
    Assignee: Ricoh Printing Systems, Ltd.
    Inventors: Atsushi Onose, Tatsunari Sato, Shintaro Yamada
  • Image forming apparatus and method of detecting the detection characteristics of a reflection density sensor
    Patent number: 7215896
    Abstract: An image forming apparatus is able to form steady test-pattern toner images for calibration of reflection density detection characteristics with ample toner. The operation consists of forming a test-pattern toner image for calibration of the reflection density detection characteristics, which is formed of a plurality of toner images of different colors aside from a reference test-pattern toner image for controlling image forming conditions, detecting the detection characteristics of a reflection density sensor from the result of detection of the quantity of toner attached to the test-pattern toner image for calibration of the reflection density detection characteristics, and calibrating the output characteristics of the reflection density sensor.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: May 8, 2007
    Assignee: Ricoh Printing Systems, Ltd.
    Inventors: Shintaro Yamada, Akira Shimada, Tatsunari Sato, Nobuaki Fukasawa, Satoshi Narita
  • Image forming apparatus
    Publication number: 20050163518
    Abstract: An image forming apparatus includes detect means for detecting a toner image formed on an image carrier, and transport means for transporting a sheet. The detect means is disposed in correspondence with a position which is on an inner side of a width of the image carrier, and on an outer side of a contact region with the transport means and the sheet in a direction perpendicular to a transporting direction of carrying the sheet.
    Type: Application
    Filed: December 22, 2004
    Publication date: July 28, 2005
    Applicant: Ricoh Printing Systems, Ltd.
    Inventors: Atsushi Onose, Tatsunari Sato, Shintaro Yamada
  • Image forming apparatus and method of detecting the detection characteristics of a reflection density sensor
    Publication number: 20050025510
    Abstract: An image forming apparatus is able to form steady test-pattern toner images for calibration of reflection density detection characteristics with ample toner. The operation consists of forming a test-pattern toner image for calibration of the reflection density detection characteristics, which is formed of a plurality of toner images of different colors aside from a reference test-pattern toner image for controlling image forming conditions, detecting the detection characteristics of a reflection density sensor from the result of detection of the quantity of toner attached to the test-pattern toner image for calibration of the reflection density detection characteristics, and calibrating the output characteristics of the reflection density sensor.
    Type: Application
    Filed: July 29, 2004
    Publication date: February 3, 2005
    Inventors: Shintaro Yamada, Akira Shimada, Tatsunari Sato, Nobuaki Fukasawa, Satoshi Narita