Patents by Inventor Yoshiyuki Ozawa
Yoshiyuki Ozawa 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).
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Patent number: 9479676Abstract: A printer includes a liquid ejection section and a drive control section. The liquid ejection section is configured to eject a plurality of types of liquids and form dots having different sizes. The drive control section is configured to control a dot size of the liquids to be ejected by the liquid ejection section based on image data. When an image including a three-dimensional image in which a plurality of linear images are arrayed is printed on a medium, the liquid ejection section is configured to eject the liquids, at least in an end section area in an array direction of the linear images in a print area of the image, under a setting in which an ejection ratio of relatively small dots is set lower than in an inner area that is positioned more inward than the end section area.Type: GrantFiled: August 1, 2014Date of Patent: October 25, 2016Assignee: Seiko Epson CorporationInventors: Tomoyuki Nakano, Hiroshi Shirotori, Yoshiyuki Ozawa, Kanako Ide, Katsumi Yamada
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Publication number: 20150035889Abstract: A printer includes a liquid ejection section and a drive control section. The liquid ejection section is configured to eject a plurality of types of liquids and form dots having different sizes. The drive control section is configured to control a dot size of the liquids to be ejected by the liquid ejection section based on image data. When an image including a three-dimensional image in which a plurality of linear images are arrayed is printed on a medium, the liquid ejection section is configured to eject the liquids, at least in an end section area in an array direction of the linear images in a print area of the image, under a setting in which an ejection ratio of relatively small dots is set lower than in an inner area that is positioned more inward than the end section area.Type: ApplicationFiled: August 1, 2014Publication date: February 5, 2015Inventors: Tomoyuki NAKANO, Hiroshi SHIROTORI, Yoshiyuki OZAWA, Kanako IDE, Katsumi YAMADA
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Publication number: 20120031293Abstract: A method for making a lithographic printing plate includes forming an image area on a medium by ejecting an ink onto the medium from a head. The ink contains a water-insoluble polymer acting as a dispersant resin, a pigment coated with the water-insoluble polymer, and a surfactant.Type: ApplicationFiled: August 3, 2011Publication date: February 9, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Yoshiyuki OZAWA
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Patent number: 7621630Abstract: An ink set that can realize printing of images having excellent image reproduction, color reproduction, and fixation. The ink set contains a black ink composition and a chromatic color ink composition, wherein the black ink composition has at least a surface-treated pigment dispersible and/or dissolvable in water without any dispersant, resin particles having a film forming temperature below 0° C., resin particles having a film forming temperature of 30° C. or above, and water as a main solvent, and the chromatic color ink composition contains at least a pigment, a polymer, which includes the pigment and renders the pigment dispersible in the ink composition, and water as a main solvent.Type: GrantFiled: December 3, 2007Date of Patent: November 24, 2009Assignee: Seiko Epson CorporationInventors: Hiroshi Ito, Yoshiyuki Ozawa
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Publication number: 20080254265Abstract: Disclosed is an ink set that can realize printing of images having excellent image reproduction, color reproduction, and fixation. The ink set comprises a black ink composition and a chromatic color ink composition, wherein the black ink composition comprises at least a surface-treated pigment dispersible and/or dissolvable in water without any dispersant, resin particles having a film forming temperature below 0° C., resin particles having a film forming temperature of 30° C. or above, and water as a main solvent, and the chromatic color ink composition comprises at least a pigment, a polymer, which includes the pigment and renders the pigment dispersible in the ink composition, and water as a main solvent.Type: ApplicationFiled: December 3, 2007Publication date: October 16, 2008Inventors: Hiroshi Ito, Yoshiyuki Ozawa
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Publication number: 20070188813Abstract: A printing apparatus is operable to print an image by forming first dots with first ink having a first density and second dots with second ink having a second density lower than the first density. A first dot former is operable to form a plurality of sizes of the first dots. A second dot former is operable to form a plurality of sizes of the second dots. A smallest one of the sizes of the first dots is smaller than a smallest one of the sizes of the second dots. A largest one of the sizes of the first dots is larger than a largest one of the sizes of the second dots.Type: ApplicationFiled: January 18, 2007Publication date: August 16, 2007Inventor: Yoshiyuki Ozawa
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Publication number: 20050036021Abstract: Disclosed is an ink set that can realize printing of images having excellent image reproduction, color reproduction, and fixation. The ink set comprises a black ink composition and a chromatic color ink composition, wherein the black ink composition comprises at least a surface-treated pigment dispersible and/or dissolvable in water without any dispersant, resin particles having a film forming temperature below 0° C., resin particles having a film forming temperature of 30° C. or above, and water as a main solvent, and the chromatic color ink composition comprises at least a pigment, a polymer, which includes the pigment and renders the pigment dispersible in the ink composition, and water as a main solvent.Type: ApplicationFiled: June 1, 2004Publication date: February 17, 2005Inventors: Hiroshi Ito, Yoshiyuki Ozawa
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Patent number: 6328438Abstract: A highly efficient ink jet printing method is provided which involves printing of two liquids of an ink composition and a reaction solution containing a reactant capable of functioning to agglomerate ingredients of the ink composition. Efficient printing of two liquids and production of good printed images can be attained by a method wherein ink jet recording heads are reciprocated on a recording medium and an ink composition is deposited on the recording medium both at the time of motion of the recording head in the forward direction and at the time of motion of the recording head in the backward direction, while the reaction solution is deposited onto the recording medium only at the time of motion of the recording head in the forward or backward direction.Type: GrantFiled: June 9, 1999Date of Patent: December 11, 2001Assignee: Seiko Epson CorporationInventor: Yoshiyuki Ozawa
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Patent number: 6234601Abstract: An ink jet recording method which can produce a good image on both plain papers and specialty recording media for ink jet recording, and an ink jet recording apparatus for the ink jet recording method are disclosed. The ink jet recording method comprises: providing a black ink composition comprising a pigment as a colorant and a black ink composition comprising a dye as a colorant; and, when the recording medium comprises a gloss layer and/or an ink-receptive layer, printing only the black ink composition comprising a dye as the colorant on the recording medium, and, when the recording medium is plain paper, both the black ink composition comprising a pigment as the colorant and the black ink composition comprising a dye as the colorant are printed. According to this recording method, in the case of printing on plain paper, the density of black can be enhanced, while in the case of printing on a specialty paper for ink jet recording, an image having high chroma and good reproduction range can be produced.Type: GrantFiled: April 16, 1998Date of Patent: May 22, 2001Assignee: Seiko Epson CorporationInventors: Hiroko Hayashi, Masahiro Yatake, Yoshiyuki Ozawa, Masayuki Momose
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Patent number: 6114411Abstract: An ink composition for ink jet recording is described comprising a pigment, a resin dispersant, a thermoplastic resin emulsion and water, wherein the weight ratio of the pigment to the resin dispersant is from 20:1 to 5:2. The foregoing ink composition is little susceptible to irregular bleeding on a recording medium, undergoes no change in physical properties and jettability and no precipitation of solid matter and exhibits an excellent redispersibility.Type: GrantFiled: October 7, 1996Date of Patent: September 5, 2000Assignee: Seiko Epson CorporationInventors: Hiroto Nakamura, Michinari Tsukahara, Hideo Yamazaki, Hidehiko Komatsu, Yoshiyuki Ozawa, Kazutoshi Fujisawa, Kenichi Kanbayashi
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Patent number: 5725961Abstract: A recording medium is provided which causes none of bleeding or feathering, cracking and whitening of a print and is suitably usable especially for ink jet recording. The recording medium, when used in a system where an image is viewed by taking advantage of transmitted light, such as a system using an OHP sheet, can realize a good image having high light transmittance and high brightness. The recording medium comprises a substrate bearing an ink-absorbent layer, the ink-absorbent layer being formed of a polymer complex of a basic polymer and a styrene/(meth)acrylic acid polymer, the mixing ratio of the basic polymer and the styrene/(meth)acrylic acid polymer being in the range of from 10:3.5 to 7.Type: GrantFiled: October 3, 1996Date of Patent: March 10, 1998Assignees: Seiko Epson Corp., Taiho Industries Co., Ltd.Inventors: Yoshiyuki Ozawa, Hideo Yamazaki, Kenji Kawada, Tetsuya Ochiai
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Patent number: 5432514Abstract: A reference voltage for an analog-to-digital (A/D) converting unit is converted into plural digital values through the effect of the A/D converting unit. A difference between an average value of the digital values and an ideal reference value is derived. If the different is larger than a predetermined allowable value, it is determined that a transient abnormality takes place in an A/D converter system. The last measured reference voltage and its related digital input signal are disallowed to be used as measured values. If detection of a transient abnormality serially takes place predetermined times, it is determined that a constant abnormality takes place in the A/D converter system.Type: GrantFiled: December 9, 1993Date of Patent: July 11, 1995Assignees: Hitachi, Ltd., Hitachi Computer Engineering Co., Ltd.Inventors: Youji Mukuda, Yoshiyuki Ozawa, Masuo Murano
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Patent number: 5365261Abstract: A transfer type ink jet printer having an ink jet head for ejecting droplets of ink in which charged coloring particles have been dispersed in a solvent in the form of insulating carrier liquid having a low dielectric constant, a transfer medium for carrying and moving an ink image formed of ink droplets ejected from the head, and a pressure roller for transferring the ink image written to the transfer medium to a recording medium. By temporarily fixing the charged coloring particles in the ink image onto the transfer medium until the ink image is led to the transfer means after the ink image is formed on the transfer medium, good and high-speed image printing has been made possible without vapor generation, so that an excellent image free from any printing pattern is available at a low transfer pressure.Type: GrantFiled: March 19, 1993Date of Patent: November 15, 1994Assignee: Seiko Epson CorporationInventors: Yoshiyuki Ozawa, Hideo Yamazaki, Makoto Fujino, Tohru Fukushima, Yoshinori Miyazawa
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Patent number: 5273854Abstract: A liquid composition for developing electrophotography, comprising a toner which comprises a pigment coated with a rosin or its derivative and an ethylene copolymer, and a carrier liquid having a high insulation and low dielectric constant, the toner being dispersed in the carrier liquid. The liquid composition for developing electrophotography according to the present invention provides a toner image having a sufficient density and a clear contour on a recording paper by means of a low pressure in an intermediate transfer system.Type: GrantFiled: March 13, 1992Date of Patent: December 28, 1993Assignee: Seiko Epson CorporationInventors: Masakazu Shinozuka, Yoshiyuki Ozawa
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Patent number: 5084843Abstract: A volatile storage circuit for latching data is disposed outside a non-volatile memory array. Before a bulk erase of the memory array, some of the data items contained therein are transferred to and held by the storage circuit. The data items thus saved are rewritten to the non-volatile memory array after the bulk erase, or alternatively, on the basis of control data items transferred to the storage circuit, only regions designated by these data items are subjected to the bulk erase. Thus, in case of a bulk erase of an EEPROM, some of the stored data items can be preserved, so as to prevent illicit use of and maintain the integrity of the preserved data. Also the testing time of the data rewritten to the memory array is reduced because of the elimination of the need to test the memory area containing the preserved data in that only the integrity of the memory area containing data sourced externally need be tested.Type: GrantFiled: April 24, 1990Date of Patent: January 28, 1992Assignee: Hitachi, Ltd.Inventors: Naoki Mitsuishi, Kiyoshi Matsubara, Yoh Takamori, Yoshiyuki Ozawa
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Patent number: 4931997Abstract: A volatile storage circuit for latching data is disposed outside a non-volatile memory array. Before a bulk erase of the memory array, some of the data items contained therein are transferred to and held by the storage circuit. The data items thus saved are rewritten to the non-volatile memory array after the bulk erase, or alternatively, on the basis of control data items transferred to the storage circuit, only regions designated by these data items are subjected to the bulk erase. Thus, in case of a bulk erase of an EEPROM, some of the stored data items can be preserved, so as to prevent illicit use of and maintain the integrity of the preserved data. Also the testing time of the data rewritten to the memory array is reduced because of the elimination of the need to test the memory area containing the preserved data in that only the integrity of the memory area containing data sourced externally need be tested.Type: GrantFiled: February 23, 1988Date of Patent: June 5, 1990Assignee: Hitachi Ltd.Inventors: Naoki Mitsuishi, Kiyoshi Matsubara, Yoh Takamori, Yoshiyuki Ozawa