Patents by Inventor Mitsuaki Ishitoya
Mitsuaki Ishitoya 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: 9723175Abstract: An image processing apparatus performs operations including: when a density value of a black component in uncorrected monochrome image data corresponding to each of pure colors including primary colors and secondary colors in color image data is lower than a reference density value, the uncorrected monochrome image data being obtained by a monochrome conversion from the color image data to monochrome image data, determining a correction content for correcting the density value of the black component in the uncorrected monochrome image data corresponding to at least each of the pure colors out of the pure colors and peripheral colors of the pure colors in a color space to a value equal to or higher than the reference density value; and obtaining corrected monochrome image data in which correction based on the determined correction content is reflected in the uncorrected monochrome image data.Type: GrantFiled: August 24, 2016Date of Patent: August 1, 2017Assignee: RISO KAGAKU CORPORATIONInventor: Mitsuaki Ishitoya
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Publication number: 20170070645Abstract: An image processing apparatus performs operations including: when a density value of a black component in uncorrected monochrome image data corresponding to each of pure colors including primary colors and secondary colors in color image data is lower than a reference density value, the uncorrected monochrome image data being obtained by a monochrome conversion from the color image data to monochrome image data, determining a correction content for correcting the density value of the black component in the uncorrected monochrome image data corresponding to at least each of the pure colors out of the pure colors and peripheral colors of the pure colors in a color space to a value equal to or higher than the reference density value; and obtaining corrected monochrome image data in which correction based on the determined correction content is reflected in the uncorrected monochrome image data.Type: ApplicationFiled: August 24, 2016Publication date: March 9, 2017Applicant: RISO KAGAKU CORPORATIONInventor: Mitsuaki ISHITOYA
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Patent number: 9126419Abstract: An image processing device includes a print image data generator and a density adjuster. The print image date generator generates print image data for each of colors to be used to print a document image from image data of the document image including a barcode image and a background image overlapped on the barcode image as a background. The density adjuster performs at least one of processing to reduce the density of the barcode image in at least any one of pieces of the print image data of colors including the barcode image and processing to reduce the density of the background image within a neighboring region that neighbors a bar of the barcode image in at least any one of pieces of the print image data of colors including the background image.Type: GrantFiled: June 7, 2012Date of Patent: September 8, 2015Assignee: RISO KAGAKU CORPORATIONInventors: Junichi Hakamada, Tsutomu Kurose, Takahiko Nakamura, Kouichi Nobushima, Yoshiyuki Okada, Mitsuaki Ishitoya
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Patent number: 8885216Abstract: A specific gamut of colors extending a reproduction range of colors in a color space is set to make for any ink color belonging to the specific gamut a conversion from CMYK dot pattern data into numbers of ink drops to be discharged from an inkjet head, using as a lookup table an extended pattern table having a maximal drop number ‘7’. For ink colors belonging to a gamut of colors outside the specific gamut, a default pattern table having a maximal drop number ‘5’ is used as a lookup table for the conversion from CMYK dot pattern data into ink drop numbers.Type: GrantFiled: May 22, 2012Date of Patent: November 11, 2014Assignee: Riso Kagaku CorporationInventors: Mitsuaki Ishitoya, Takashi Ebisawa, Yoshiyuki Okada
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Patent number: 8727529Abstract: A printing device includes a barcode area dividing unit that divides a barcode area of a printing sheet into plural division areas along a Y direction, and a barcode area ejection amount conversion and output unit that controls an ink jet printing unit to print black bars such that an X direction is a direction in which the black bars and white bars are alternately arranged and occupancy dimensions of ink of pixels are different in the division areas divided by the barcode area dividing unit.Type: GrantFiled: August 29, 2012Date of Patent: May 20, 2014Assignee: Riso Kagaku CorporationInventors: Koichi Nobushima, Junichi Hakamada, Tsutomu Kurose, Takahiko Nakamura, Yoshiyuki Okada, Mitsuaki Ishitoya
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Patent number: 8721065Abstract: An ink jet printer comprising a conveyor belt unit 106 for transferring a print sheet 2 on a rotating conveyor belt 106a, a resist roller pair 111 and a BU roller 112 for feeding the print sheet 2 while flexing it in the transferring direction, and first and second ink jet head 104a, 104b for ejecting ink toward the print sheet, wherein the ink jet head 104b ejects ink darker in color than ink ejected from the ink jet head 104a. The ink jet head 104b serves to eject ink, that is darker in color than that of the ink jet head 104a, and is located at a position farther than the arriving position of the print sheet 2 when the print sheet 2 is displaced from the conveyor belt 106a in the transferring direction as the elasticity of the print sheet 2 due to flexure exceeds adhesion between the print sheet 2 and the conveyor belt 106a, while the ink jet head 104a is arranged between the ink jet head 104b and the BU roller 112.Type: GrantFiled: October 25, 2006Date of Patent: May 13, 2014Assignee: Riso Kagaku CorporationInventors: Mitsuaki Ishitoya, Kenji Oshima, Shoichi Miyata
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Publication number: 20130076848Abstract: A printing device includes a barcode area dividing unit that divides a barcode area of a printing sheet into plural division areas along a Y direction, and a barcode area ejection amount conversion and output unit that controls an ink jet printing unit to print black bars such that an X direction is a direction in which the black bars and white bars are alternately arranged and occupancy dimensions of ink of pixels are different in the division areas divided by the barcode area dividing unit.Type: ApplicationFiled: August 29, 2012Publication date: March 28, 2013Applicant: RISO KAGAKU CORPORATIONInventors: Koichi Nobushima, Junichi Hakamada, Tsutomu Kurose, Takahiko Nakamura, Yoshiyuki Okada, Mitsuaki Ishitoya
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Publication number: 20120314260Abstract: An image processing device includes a print image data generator and a density adjuster. The print image date generator generates print image data for each of colors to be used to print a document image from image data of the document image including a barcode image and a background image overlapped on the barcode image as a background. The density adjuster performs at least one of processing to reduce the density of the barcode image in at least any one of pieces of the print image data of colors including the barcode image and processing to reduce the density of the background image within a neighboring region that neighbors a bar of the barcode image in at least any one of pieces of the print image data of colors including the background image.Type: ApplicationFiled: June 7, 2012Publication date: December 13, 2012Applicant: RISO KAGAKU CORPORATIONInventors: Junichi HAKAMADA, Tsutomu KUROSE, Takahiko NAKAMURA, Kouichi NOBUSHIMA, Yoshiyuki OKADA, Mitsuaki ISHITOYA
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Publication number: 20120307271Abstract: A specific gamut of colors extending a reproduction range of colors in a color space is set to make for any ink color belonging to the specific gamut a conversion from CMYK dot pattern data into numbers of ink drops to be discharged from an inkjet head, using as a lookup table an extended pattern table having a maximal drop number ‘7’. For ink colors belonging to a gamut of colors outside the specific gamut, a default pattern table having a maximal drop number ‘5’ is used as a lookup table for the conversion from CMYK dot pattern data into ink drop numbers.Type: ApplicationFiled: May 22, 2012Publication date: December 6, 2012Applicant: RISO KAGAKU CORPORATIONInventors: Mitsuaki ISHITOYA, Takashi EBISAWA, Yoshiyuki OKADA
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Patent number: 7661357Abstract: A controller reads out image data of an area frame that a user has drawn on an original and accurately extracts the area frame by removing noise from the read-out image data to divide image data of an area outside the area frame and image data of an area inside the area frame into separate stencils, according to a separation program. It is therefore possible to execute a separation process desired by the user without increasing costs and man-hours and with easy operations not making the user feel troublesome.Type: GrantFiled: July 2, 2008Date of Patent: February 16, 2010Assignee: Riso Kagaku CorporationInventors: Takashi Ebisawa, Mitsuaki Ishitoya
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Publication number: 20090231389Abstract: An ink jet printer comprising a conveyor belt unit 106 for transferring a print sheet 2 on a rotating conveyor belt 106a, a resist roller pair 111 and a BU roller 112 for feeding the print sheet 2 while flexing it in the transferring direction, and first and second ink jet head 104a, 104b for ejecting ink toward the print sheet, wherein the ink jet head 104b ejects ink darker in color than ink ejected from the ink jet head 104a. The ink jet head 104b serves to eject ink, that is darker in color than that of the ink jet head 104a, and is located at a position farther than the arriving position of the print sheet 2 when the print sheet 2 is displaced from the conveyor belt 106a in the transferring direction as the elasticity of the print sheet 2 due to flexure exceeds adhesion between the print sheet 2 and the conveyor belt 106a, while the ink jet head 104a is arranged between the ink jet head 104b and the BU roller 112.Type: ApplicationFiled: October 25, 2006Publication date: September 17, 2009Applicant: RISO KAGAKU CORPORATIONInventors: Mitsuaki Ishitoya, Kenji Oshima, Shoichi Miyata
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Publication number: 20080271617Abstract: A controller reads out image data of an area frame that a user has drawn on an original and accurately extracts the area frame by removing noise from the read-out image data to divide image data of an area outside the area frame and image data of an area inside the area frame into separate stencils, according to a separation program. It is therefore possible to execute a separation process desired by the user without increasing costs and man-hours and with easy operations not making the user feel troublesome.Type: ApplicationFiled: July 2, 2008Publication date: November 6, 2008Applicant: RISO KAGAKU CORPORATIONInventors: Takashi Ebisawa, Mitsuaki Ishitoya
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Patent number: 7409907Abstract: A controller reads out image data of an area frame that a user has drawn on an original and accurately extracts the area frame by removing noise from the read-out image data to divide image data of an area outside the area frame and image data of an area inside the area frame into separate stencils, according to a separation program. It is therefore possible to execute a separation process desired by the user without increasing costs and man-hours and with easy operations not making the user feel troublesome.Type: GrantFiled: April 21, 2005Date of Patent: August 12, 2008Assignee: Riso Kagaku CorporationInventors: Takashi Ebisawa, Mitsuaki Ishitoya
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Publication number: 20050235846Abstract: A controller reads out image data of an area frame that a user has drawn on an original and accurately extracts the area frame by removing noise from the read-out image data to divide image data of an area outside the area frame and image data of an area inside the area frame into separate stencils, according to a separation program. It is therefore possible to execute a separation process desired by the user without increasing costs and man-hours and with easy operations not making the user feel troublesome.Type: ApplicationFiled: April 21, 2005Publication date: October 27, 2005Inventors: Takashi Ebisawa, Mitsuaki Ishitoya
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Patent number: 6894807Abstract: Color image information is converted to black-and-white image information. Based on the converted black-and-white image information, a black-and-white printout is obtained. At least either brightness or saturation is independently controlled for each desired hue, based on a color image signal carrying the color image information. The controlled color image signal is converted to a black-and-white image signal carrying the black-and-white image information, and the black-and-white printout is obtained based on the converted black-and-white image signal.Type: GrantFiled: June 27, 2000Date of Patent: May 17, 2005Assignee: Riso Kagaku CorporationInventors: Mitsuaki Ishitoya, Tadakazu Yokoyama
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Patent number: 6595126Abstract: A user PC 120 for controlling a stencil printing machine 1, having a plurality of exchangeable printing drums, wherein respective printing drums are mounted with respective perforated stencil sheets which are formed by a stencil-making processing section 104 on the basis of image data, and a print sheet is held in press contact with the plural printing drums to perform a stencil printing process with first and second stencil-printing processing sections 105, 106 is disclosed as having a registering function to register printing ink colors to be used for printing with the respective printing drums by enabling reading-in of a printer driver and to store useable ink color information, a function to produce display data to display contents of the ink-color designating information produced by the designating section for the respective printing drums.Type: GrantFiled: August 30, 2001Date of Patent: July 22, 2003Assignee: Riso Kagaku CorporationInventors: Noriaki Nagao, Mitsuaki Ishitoya, Jianmin Xiong, Michael Mehigan, Nami Higashio
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Publication number: 20020029702Abstract: A user PC 120 for controlling a stencil printing machine 1, having a plurality of exchangeable printing drums, wherein respective printing drums are mounted with respective perforated stencil sheets which are formed by a stencil-making processing section 104 on the basis of image data, and a print sheet is held in press contact with the plural printing drums to perform a stencil printing process with first and second stencil-printing processing sections 105, 106 is disclosed as having a registering function to register printing ink colors to be used for printing with the respective printing drums by enabling reading-in of a printer driver and to store useable ink color information, a function to produce display data to display contents of the ink-color designating information produced by the designating section for the respective printing drums.Type: ApplicationFiled: August 30, 2001Publication date: March 14, 2002Inventors: Noriaki Nagao, Mitsuaki Ishitoya, Jianmin Xiong, Michael Mehigan, Nami Higashio
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Patent number: 6354201Abstract: Dot-gain information representative of the dot gain of ink is input for each ink type to be used in printing by a dot-gain information input section (80), and spectral-density information representative of the spectral density of the ink is input by a spectral-density information input section (82). Based on the input dot-gain information and spectral-density information, a perforation-size control section (84) outputs a heating signal (ENS) and a voltage control signal (S) so that the size of a perforation becomes a predetermined printing dot size at all times.Type: GrantFiled: February 14, 2000Date of Patent: March 12, 2002Assignee: Riso Kagaku CorporationInventor: Mitsuaki Ishitoya