Patents by Inventor Takaharu Yamamoto
Takaharu Yamamoto 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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Publication number: 20130057608Abstract: The present invention provides a printer and printing method that forms a lenticular lens or a transparent structure based on pseudo-embossment printing or the like on paper having penetrability, and an inkjet printer performs: with respect to a base material 9 having a characteristic of being penetrated by radiation-curable ink, an undercoating step of using radiation-curable transparent ink to form a thin undercoat layer 94; an undercoat curing step of irradiating the formed undercoat layer 94 with radiation to completely solidify the formed undercoat layer 94; a transparent structure forming step of using the radiation-curable transparent ink to form a spacer layer 96 and microlens layer 97 as a desired transparent structure on the solidified undercoat layer 94; and a transparent structure curing step of afterward further irradiating the radiation to cure the formed spacer layer 96 and microlens layer 97.Type: ApplicationFiled: May 13, 2011Publication date: March 7, 2013Applicant: DAINIPPON SCREEN MFG CO LTDInventors: Takaharu Yamamoto, Kazushi Kibune
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Publication number: 20120249653Abstract: A filter manufacturing apparatus includes a printing cell setting unit that sets, based on a predetermined filter pitch and a head resolution, printing cells having an equal number of dot areas in the direction perpendicular to the transport direction of the printing medium, a shift amount calculating unit that calculates shift amounts between the filter pitch and the printing cells in the direction perpendicular to the transport direction of the printing medium, a shift amount determining unit that determines whether shift amounts of the printing cells exceed a unit dot area; and a printing cell complementing unit that complements the shift amounts of the printing cells exceeding the unit dot area by adjusting the number of dot areas included in the printing cells.Type: ApplicationFiled: April 2, 2012Publication date: October 4, 2012Inventors: Motonobu KAWABATA, Toru Kawada, Kazushi Kibune, Takaharu Yamamoto
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Publication number: 20110242203Abstract: An inkjet printing apparatus is provided, which has a simple construction, and is yet capable of reducing ink consumption and cleaning inkjet heads promptly. The inkjet printing apparatus includes connector caps 51a-51l for connecting tubes communicating with suction caps, a cap support 54 supporting the connector caps 51a-51l, a switch element 60 for switching to a sucking state one of the connector caps 51a-51l to which the tubes are connected, and a stepping motor 57 for supporting and rotating the switch element 60.Type: ApplicationFiled: October 15, 2010Publication date: October 6, 2011Inventors: Takaharu YAMAMOTO, Hiroyuki FUCHIOKA
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Publication number: 20110222126Abstract: An ejection part (3) in an inkjet printer (1) has ejection mechanisms (31a to 31d) for ejecting fine droplets of colored ink and an ejection mechanism (32) for ejecting fine droplets of clear ink, and a colored image is formed on a colored image print area of print medium (9) by the ejection mechanisms (31a to 31d). By the ejection mechanism (32), the colored image on the print medium (9) is coated with the clear ink and a code image is formed on a blank area around the colored image print area. In the inkjet printer (1), since the coating of the colored image and the forming of the code image are performed with the same clear ink ejected from the one ejection mechanism (32), improvement of wear resistance and improvement of security of the colored image can be achieved while reducing manufacturing cost of the apparatus of the inkjet printer (1).Type: ApplicationFiled: March 4, 2010Publication date: September 15, 2011Applicant: DAINIPPON SCREEN MFG. CO., LTD.Inventors: Hiroshi Asai, Yuji Kurokawa, Takaharu Yamamoto, Kazuma Kan, Makoto Narazaki
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Patent number: 7992493Abstract: Line patches m and solid patches s are printed with a subject image, each line patches having at least 200 lines per inch and a duty ratio of at least 60%, to detect densities Dm and Ds. A water coefficient W (=Dm/Ds) is calculated from the detected densities Dm and Ds. Whether dampening water is fed at a proper rate or not is determined based on correlation data stored beforehand and showing a relationship between the feed rate of dampening water and the water coefficient W. The feed rate of dampening water is controlled to be a proper rate.Type: GrantFiled: January 17, 2006Date of Patent: August 9, 2011Assignee: Dainippon Screen MFG Co., Ltd.Inventor: Takaharu Yamamoto
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Patent number: 7836826Abstract: A dampening water regulating scale P includes first detecting patches PY1, PM1, PC1 and PK1, and second detecting patches PY2, PM2, PC2 and PK2. The first detecting patches PY1, PM1, PC1 and PK1 are formed of line patches having the number of lines at 400 lines per inch and a duty ratio at 67%. The second detecting patches PY2, PM2, PC2 and PK2 are formed of dot patches having the number of lines at 150 and a dot percentage at 80%.Type: GrantFiled: January 19, 2006Date of Patent: November 23, 2010Assignee: Dainippon Screen MFG Co., Ltd.Inventors: Takaharu Yamamoto, Minoru Iwamoto
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Publication number: 20070144379Abstract: A printing plate developing method includes an image recording step for recording an image on a printing plate with an image recorder, an ink key opening degree setting step for setting opening degrees of ink keys in an ink feeder such that the larger opening degree is set for the smaller image percentage in regions, corresponding to the respective ink keys, on the printing plate having the image recorded thereon, a preliminary ink feeding step for feeding the ink to the ink rollers, an ink transfer step for transferring the ink from the ink rollers to the dampening water rollers, a dampening water feeding step for feeding the dampening water to the printing plate with the dampening water rollers, an ink feeding step for feeding the ink to the printing plate with the ink rollers, and a transfer step for transferring the ink from the printing plate to printing paper.Type: ApplicationFiled: December 20, 2006Publication date: June 28, 2007Inventors: Takaharu Yamamoto, Kazuki Fukui
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Patent number: 7216946Abstract: An ink feeding rate control method for a printing machine includes a step of determining, from image data used in recording images, an average of image area ratios of images in areas on prints corresponding to ink keys, a step of determining, from the image data, an average of image area ratios of images in positions aligned in a printing direction with the detecting patches (i.e. rectangular areas having substantially the same width as the detecting patches and extending in the printing direction) printed in the areas on the prints corresponding to the ink keys, and a step of correcting the reference information based on the average of image area ratios of the images in the areas on the prints corresponding to the ink keys, and the average of image area ratios of the images in the positions aligned in the printing direction with the detecting patches printed on the prints.Type: GrantFiled: February 10, 2004Date of Patent: May 15, 2007Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Takaharu Yamamoto, Kazuya Takeda, Kazuki Fukui
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Patent number: 7202973Abstract: In a patch measurement device, a data storage section stores printed-image data including a control strip on a printed material. Based on the pixel values constituting printed-image data stored in the data storage section, a patch position detection section detects the position of a patch. A color density measurement section measures the color density of the patch whose position has been detected by the patch position detection section. A correlation coefficient ?m between a key pattern x and subject data y which is calculated by a reference mark detection section is represented as ?m=([x]*[y])?([x]?1*[y]), where [x]*[y] is a sum of multiplication products of corresponding elements of the two matrices. Matrix [x]?1 represents an inverted pattern of the key pattern x.Type: GrantFiled: July 2, 2002Date of Patent: April 10, 2007Assignee: Dainippon Screen MFG. Co., Ltd.Inventors: Takaharu Yamamoto, Tsuyoshi Okuda
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Patent number: 7131376Abstract: An ink feeding method includes a density reading step for reading density data obtained by measuring densities of detecting patches on a first image, before an end of a printing operation, a first computing step for computing, from the density data, an ink feed film thickness remaining after prints having the first image are made, a second computing step for computing an ink feed film thickness required for making prints having a second image, from a target density for the prints having the second image, a third computing step for computing a preset ink feeding rate from the ink feed film thickness remaining after the prints having the first image are made, computed in the first computing step, and the ink feed film thickness required for making the prints having the second image, computed in the second computing step, and an ink feeding step for feeding the preset ink based on the preset ink feeding rate computed in the third computing step.Type: GrantFiled: September 21, 2004Date of Patent: November 7, 2006Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Takaharu Yamamoto, Kazuya Takeda, Kazuki Fukui
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Publication number: 20060180042Abstract: A dampening water regulating scale P includes first detecting patches PY1, PM1, PC1 and PK1, and second detecting patches PY2, PM2, PC2 and PK2. The first detecting patches PY1, PM1, PC1 and PK1 are formed of line patches having the number of lines at 400 lines per inch and a duty ratio at 67%. The second detecting patches PY2, PM2, PC2 and PK2 are formed of dot patches having the number of lines at 150 and a dot percentage at 80%.Type: ApplicationFiled: January 19, 2006Publication date: August 17, 2006Inventors: Takaharu Yamamoto, Minoru Iwamoto
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Publication number: 20060162590Abstract: Line patches m and solid patches s are printed with a subject image, each line patches having at least 200 lines per inch and a duty ratio of at least 60%, to detect densities Dm and Ds. A water coefficient W (=Dm/Ds) is calculated from the detected densities Dm and Ds. Whether dampening water is fed at a proper rate or not is determined based on correlation data stored beforehand and showing a relationship between the feed rate of dampening water and the water coefficient W. The feed rate of dampening water is controlled to be a proper rate.Type: ApplicationFiled: January 17, 2006Publication date: July 27, 2006Inventor: Takaharu Yamamoto
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Patent number: 7073445Abstract: An illuminating unit includes a pair of fluorescent lamps each having a prism sheet mounted peripherally thereof to act as a condensing member, and concave mirrors for reflecting light emitted from the fluorescent lamps to printing paper acting as a print. The prism sheet acts as a condensing member for condensing the light diffused axially of each fluorescent lamp, in directions perpendicular to the axis of the fluorescent lamp. The prism sheet has minute projections approximately in the shape of triangular prisms formed on a surface thereof continually along the axis of the fluorescent lamp and projecting in the directions perpendicular to the axis of the fluorescent lamp.Type: GrantFiled: July 15, 2004Date of Patent: July 11, 2006Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Takaharu Yamamoto, Masanori Nakayama
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Patent number: 7066087Abstract: Densities of detecting patches also called control scales printed on prints in a first print job are used to control the feed rate of dampening water in a second print job following the first print job. Specifically, densities of detecting patches on the prints obtained from the first print job are measured, and a feed rate of dampening water is calculated from the densities of the detecting patches. A base feed rate of dampening water is calculated based on the feed rate calculated and a humidity and temperature occurring when the first print job is performed. A proper feed rate of dampening water is calculated based on the base feed rate and a humidity and temperature occurring when the second print job is performed.Type: GrantFiled: October 26, 2004Date of Patent: June 27, 2006Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Kazuki Fukui, Takaharu Yamamoto
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Patent number: 6918339Abstract: First, densities are measured of a set of detecting patches having an equal number of lines and different area ratios between a printing area and a non-printing area, a set of detecting patches having an equal area ratio between a printing area and a non-printing area and different numbers of lines, and solid patches. Next, area ratios S relating to quantities of dampening water are calculated by using density of the set of detecting patches having the equal number of lines and different area ratios between the printing area and non-printing area, and density of the solid patches. Then, coefficients N relating to emulsification rates of ink are calculated by using density of the set of detecting patches having the equal area ratio between the printing area and non-printing area and different numbers of lines, and the density of the solid patches. Finally, a feed rate of dampening water is adjusted by using the area ratios S and coefficients N.Type: GrantFiled: May 14, 2004Date of Patent: July 19, 2005Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Takaharu Yamamoto, Kazuki Fukui
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Publication number: 20050087085Abstract: Densities of detecting patches also called control scales printed on prints in a first print job are used to control the feed rate of dampening water in a second print job following the first print job. Specifically, densities of detecting patches on the prints obtained from the first print job are measured, and a feed rate of dampening water is calculated from the densities of the detecting patches. A base feed rate of dampening water is calculated based on the feed rate calculated and a humidity and temperature occurring when the first print job is performed. A proper feed rate of dampening water is calculated based on the base feed rate and a humidity and temperature occurring when the second print job is performed.Type: ApplicationFiled: October 26, 2004Publication date: April 28, 2005Inventors: Kazuki Fukui, Takaharu Yamamoto
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Patent number: 6883432Abstract: An ink feeding method for a printing machine includes a color density measuring step for measuring color density of prints at intervals of time, a variation coefficient computing step for computing a variation coefficient for varying the ink feeding rate based on the color density of prints and a target color density of prints, a color density gradient computing step for computing, based on the color density of prints, a color density gradient representing a rate of variation in the color density of prints occurring with an increase in the number of prints, an expected color density computing step for computing, based on the color density gradient, an expected color density of prints occurring after a predetermined number of prints are made, a determining step for determining whether the expected color density of prints occurring after the predetermined number of prints are made exceeds the target color density of prints, and a variation coefficient correcting step for correcting the variation coefficient wheType: GrantFiled: April 10, 2003Date of Patent: April 26, 2005Assignee: Dainippon Screen Mfg. Co., Ltd.Inventors: Takaharu Yamamoto, Satoru Kiyohara, Kunio Muraji
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Publication number: 20050061176Abstract: An ink feeding method includes a density reading step for reading density data obtained by measuring densities of detecting patches on a first image, before an end of a printing operation, a first computing step for computing, from the density data, an ink feed film thickness remaining after prints having the first image are made, a second computing step for computing an ink feed film thickness required for making prints having a second image, from a target density for the prints having the second image, a third computing step for computing a preset ink feeding rate from the ink feed film thickness remaining after the prints having the first image are made, computed in the first computing step, and the ink feed film thickness required for making the prints having the second image, computed in the second computing step, and an ink feeding step for feeding the preset ink based on the preset ink feeding rate computed in the third computing step.Type: ApplicationFiled: September 21, 2004Publication date: March 24, 2005Inventors: Takaharu Yamamoto, Kazuya Takeda, Kazuki Fukui
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Publication number: 20050024700Abstract: An illuminating unit includes a pair of fluorescent lamps each having a prism sheet mounted peripherally thereof to act as a condensing member, and concave mirrors for reflecting light emitted from the fluorescent lamps to printing paper acting as a print. The prism sheet acts as a condensing member for condensing the light diffused axially of each fluorescent lamp, in directions perpendicular to the axis of the fluorescent lamp. The prism sheet has minute projections approximately in the shape of triangular prisms formed on a surface thereof continually along the axis of the fluorescent lamp and projecting in the directions perpendicular to the axis of the fluorescent lamp.Type: ApplicationFiled: July 15, 2004Publication date: February 3, 2005Inventors: Takaharu Yamamoto, Masanori Nakayama
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Publication number: 20040226469Abstract: First, densities are measured of a set of detecting patches having an equal number of lines and different area ratios between a printing area and a non-printing area, a set of detecting patches having an equal area ratio between a printing area and a non-printing area and different numbers of lines, and solid patches. Next, area ratios S relating to quantities of dampening water are calculated by using density of the set of detecting patches having the equal number of lines and different area ratios between the printing area and non-printing area, and density of the solid patches. Then, coefficients N relating to emulsification rates of ink are calculated by using density of the set of detecting patches having the equal area ratio between the printing area and non-printing area and different numbers of lines, and the density of the solid patches. Finally, a feed rate of dampening water is adjusted by using the area ratios S and coefficients N.Type: ApplicationFiled: May 14, 2004Publication date: November 18, 2004Applicant: DAINIPPON SCREEN MFG. CO, LTD.Inventors: Takaharu Yamamoto, Kazuki Fukui