Patents by Inventor Sohei Yagisawa

Sohei Yagisawa 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).

  • Method of printing an indication of defective printing, an inkjet printer, a printer driver, and a defective printing notification method
    Patent number: 8167425
    Abstract: A method of printing an indication of defective printing can print a defective printing mark indicating that printing was not completed normally on a printout containing unprinted or missing dots. When printing one page of print data on recording paper is completed but before a paper discharge command indicating a page break (step ST3) is executed, the operation printing the one page of print data is interrupted and whether or not ink droplets are being discharged normally from the ink nozzles of the inkjet head is detected. If the ink droplets are not being discharged normally, the recording paper is conveyed in reverse direction and print data for the defective printing mark is printed on the recording paper as part of the interrupt process. Therefore, if the recording paper contains unprinted (missing) dots, a defective printing mark is printed on the recording paper and printing the one page of print data then ends.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: May 1, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Motohiro Nakamaki, Tomohiro Kodama, Sohei Yagisawa
  • Method Of Printing An Indication Of Defective Printing, An Inkjet Printer, A Printer Driver, And A Defective Printing Notification Method
    Publication number: 20090244164
    Abstract: A method of printing an indication of defective printing can print a defective printing mark indicating that printing was not completed normally on a printout containing unprinted or missing dots. When printing one page of print data on recording paper is completed but before a paper discharge command indicating a page break (step ST3) is executed, the operation printing the one page of print data is interrupted and whether or not ink droplets are being discharged normally from the ink nozzles of the inkjet head is detected. If the ink droplets are not being discharged normally, the recording paper is conveyed in reverse direction and print data for the defective printing mark is printed on the recording paper as part of the interrupt process. Therefore, if the recording paper contains unprinted (missing) dots, a defective printing mark is printed on the recording paper and printing the one page of print data then ends.
    Type: Application
    Filed: March 20, 2009
    Publication date: October 1, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Motohiro Nakamaki, Tomohiro Kodama, Sohei Yagisawa