Patents by Inventor Minoru Teshikawara

Minoru Teshikawara 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).

  • Recording apparatus for recording image by expanding the image in dot pattern
    Patent number: 6846066
    Abstract: An ink-jet recording apparatus ejects ink droplets having two sizes, a large size and a small size. The ink-jet recording apparatus records data with a pattern assigned to quantized data. This arrangement reduces density non-uniformity and streaks related to the landing accuracy of ink droplets, the accuracy of sheet conveyance in the recording apparatus, and the accuracy of carriage scanning. Recording is performed with large and small dot-matrix patterns assigned to quantized data on independent planes. When the large dot and the small dot in a pattern are provided to one pixel at the same time, the large dot and the small dot are placed in positions not overlapping in the one pixel.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: January 25, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Minoru Teshikawara, Tetyuya Edamura, Naoji Otsuka, Kiichiro Takahashi, Osamu Iwasaki
  • Recording apparatus for recording image by expanding the image in dot pattern
    Publication number: 20040090480
    Abstract: An ink-jet recording apparatus for ejecting ink droplets having two sizes, a large size and a small size. The ink-jet recording apparatus records data with a pattern assigned to quantized data. This arrangement reduces density non-uniformity and streaks depending on the landing accuracy of ink droplets, the accuracy of sheet conveyance in the recording apparatus, and the accuracy of carriage scanning are reduced. Recording is performed with large and small dot-matrix patterns assigned to quantized data on independent planes. When the large dot and the small dot in a pattern are provided to one pixel at the same time, the large dot and the small dot are placed in positions not overlapping in the one pixel.
    Type: Application
    Filed: October 24, 2003
    Publication date: May 13, 2004
    Applicant: Canon Kabushiki Kaisha
    Inventors: Minoru Teshikawara, Tetsyuya Edamura, Naoji Otsuka, Kiichiro Takahashi, Osamu Iwasaki