Patents Assigned to Think Laboratory Co., Ltd.
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Publication number: 20100064918Abstract: Provided is a method of producing a printing plate, especially a gravure plate with cushion properties, which enables direct gravure printing on a hard printing target without using a blanket roll owing to being provided with cushion properties, effects a satisfactory gravure printing on a rough surface such as corrugated cardboard, and is suitable for color-printing a matrix image for forming a color filter on glass for liquid crystal panels or an image on a compact disk or the like. The gravure plate includes a hollow roll provided on the surface thereof with a cushion layer formed of rubber or resin with cushion properties, a copper-plated layer formed on the surface of the cushion layer and formed on the surface thereof with multiple gravure cells, a metal layer formed on the surface of the copper-plated layer, a metal carbide layer formed on the surface of the metal layer, and a diamond-like carbon film for covering the surface of the metal carbide layer.Type: ApplicationFiled: September 28, 2006Publication date: March 18, 2010Applicant: THINK LABORATORY CO., LTD.Inventors: Tatsuo Shigeta, Tsutomu Sato, Koichi Sugiyama, Takayuki Asano
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Publication number: 20090266254Abstract: Disclosed is a novel gravure printing roll which has no toxicity, causes no deterioration of the environment, has a surface-reinforcing coating layer and is excellent in print durability and printing performance. Also disclosed is a method of manufacturing of the gravure printing roll. The gravure printing roll includes a hollow roll, a copper plating layer which is formed on a surface of the hollow roll and has a large number of gravure cells, and a diamond-like carbon coating layer covering the surface of the copper plating layer, in which each of the gravure cells coated with the diamond-like carbon coating layer has a depth of 5 ?m or more and less than 10 ?m.Type: ApplicationFiled: October 6, 2006Publication date: October 29, 2009Applicant: THINK LABORATORY CO., LTD.Inventor: Tatsuo Shigeta
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Publication number: 20090229483Abstract: The present invention provides: a novel gravure printing roll capable of improving plate fogging, being provided with a surface-reinforcing coating layer completely free from toxicity and the possibility of pollution, and of being excellent in printing durability; and a method of producing the roll. The gravure printing roll includes a metal hollow roll, a copper-plated layer provided on the surface of the hollow roll and formed with multiple gravure cells on the surface thereof, a metal layer provided on the surface of the copper-plated layer, a metal carbide gradient layer of the metal provided on the surface of the metal layer, and a diamond-like carbon film covering the surface of the metal carbide gradient layer, in which a pit being smaller than the minimum gravure cell in the highlighted portion of the copper-plated layer and having a size not permitting ink transfer is arranged so that at least one pit exists in the one-pitch area of a screen line in a non-image area.Type: ApplicationFiled: September 28, 2006Publication date: September 17, 2009Applicant: THINK LABORATORY CO., LTD.Inventors: Tatsuo Shigeta, Tsutomu Sato, Koichi Sugiyama, Takayuki Asano
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Publication number: 20090095633Abstract: The present invention provides a copper plating method and apparatus for a gravure cylinder in which copper plating with more uniform thickness can be provided over a full length of a gravure cylinder without causing defects such as rashes and pits irrespective of a size of the gravure cylinder, concentration of a copper plating solution can be managed automatically, a consumption amount of an additive is reduced to make it possible to perform a plating treatment within a short period of time, a power supply cost is reduced, and handling is easy with excellent visibility. A gravure cylinder in a hollow cylindrical shape is held at both ends in a longitudinal direction. The gravure cylinder is accommodated in a plating bath filled with a copper plating solution. The gravure cylinder is energized so that the gravure cylinder functions as a cathode while being rotated at a predetermined speed.Type: ApplicationFiled: May 23, 2006Publication date: April 16, 2009Applicant: THINK LABORATORY CO., LTD.Inventors: Manabu Inoue, Noriko Matsumoto
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Publication number: 20090075116Abstract: A novel gravure engraving roll that has a surface-reinforcing coating layer being nontoxic and having no danger of pollution generation at all and that excels in printing life; and a process for producing the same. There is provided a gravure engraving roll comprising: a metal hollow roll; a copper plating layer superimposed on the surface of the hollow roll and on its surface furnished with a multiplicity of gravure cells; a metal layer superimposed on the surface of the copper plating layer; a layer of carbide of said metal superimposed on the surface of the metal layer; and a diamond-like carbon coating covering the surface of the metal carbide layer.Type: ApplicationFiled: May 24, 2006Publication date: March 19, 2009Applicant: THINK LABORATORY CO., LTD.Inventors: Tatsuo Shigeta, Tsutomu Sato, Koichi Sugiyama, Takayuki Asano
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Publication number: 20090068421Abstract: The present invention provides a novel gravure printing roll which includes a surface reinforcing coating layer having no toxicity and no possibility of causing pollution, and which has excellent printing resistance, and a manufacturing method thereof. The gravure printing roll includes: a plate base material; a copper plating layer formed on a surface of the plate base material and having multiple gravure cells formed thereon; and a silicon dioxide film which covers a surface of the copper plating layer, in which the silicon dioxide film is formed by using a perhydropolysilazane solution. The copper plating layer has a thickness of from 50 to 200 ?m, the gravure cell has a depth of from 5 to 150 ?m, and the silicon dioxide film has a thickness of from 0.1 to 5 ?m, preferably 0.1 to 3 ?m, and more preferably 0.1 to 1 ?m.Type: ApplicationFiled: July 19, 2006Publication date: March 12, 2009Applicant: THINK LABORATORY CO., LTD.Inventor: Tsutomu Sato
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Patent number: 7396448Abstract: There are provided a plating method for a roll and a grinding method before a cell is formed in which copper sulfate plating having a uniform thickness without any particles or pits can be applied to the roll for a gravure printing, both a middle finish grinding and a mirror surface finish grinding not depending on a grinding stone grinding can be carried out in a short period of time and a high quality roll can be provided. The grinding is carried out after applying the copper sulfate plating to the roll to attain a mirror surface finish state. The copper sulfate plating is carried out in such a way that non-soluble anode having a length more than the maximum roll length is ascended to the rotating process roll and approached to the lower surface of the roll, plating liquid having some avoidable impurities becoming a cause of particles or pits removed through a filter so as to perform a plating having no thickened portions at both ends of the roll.Type: GrantFiled: September 29, 2004Date of Patent: July 8, 2008Assignee: Think Laboratory Co., Ltd.Inventors: Manabu Inoue, Kazuhiro Sukenari, Noriko Matsumoto, Tomoyuki Konuma, Tatsuo Shigeta
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Publication number: 20070154835Abstract: There is provided a positive photosensitive composition which requires no burning, makes it possible to obtain necessary and sufficient adhesion when it is applied under a humidity of 25 to 60%, makes it possible to carry out development with keeping high sensitivity while forming no residue, ensures sharp edges, can provide a very hard resist film and is improved in scratch resistance in the handling before development. The positive photosensitive composition comprises, (A) an alkali soluble organic high molecular substance having a phenolic hydroxyl group,(B) a photo-thermal conversion material that absorbs infrared rays from an image exposure light source and converts it to heat, (C) at least one resin selected from the group consisting of; (1) vinylpyrrolidone/vinyl acetate copolymer and others, and (D) a dissolution inhibitor.Type: ApplicationFiled: May 27, 2004Publication date: July 5, 2007Applicant: THINK LABORATORY CO., LTD.Inventor: Tsutomu Sato
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Patent number: 7226724Abstract: There is provided an alkaline soluble positive-type photosensitive composition having an infrared wavelength range laser sensitive characteristic. There is also provided a positive-type photosensitive composition not requiring any burning operation, capable of attaining a requisite and sufficient close fitness in coating operation under a condition of indoor working room humidity of 25 to 60%, capable of attaining a development not producing any residuals while keeping a high sensitivity, cutting it with a sharp contour, attaining a quite hard resist film and improving an anti-scar characteristic in a handling before developing operation. This composition includes an alkaline soluble organic high molecular substance having a phenolic hydroxyl group; photo-thermal conversion substance for absorbing infrared rays of an image exposure light source; and a close-fitness modifying agent such as polyvinylpolypirrolidone/polyvinylacetatecopolymer and the like.Type: GrantFiled: November 10, 2003Date of Patent: June 5, 2007Assignee: Think Laboratory Co., Ltd.Inventor: Tsutomu Sato
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Patent number: 7194791Abstract: There are provided a plating factory for process roll for a gravure printing and a turn-table type roll stock apparatus preferable to the gravure printing plate manufacturing factory where a series of plating steps can be performed against the process roll for the gravure printing in an unmanned state at night in a full-automatic operation and the cell can be formed. Many process rolls can be stood obliquely in a circumferential arrangement in one stage or two stages at a roll pallet in such a way that a longitudinal direction of the process rolls may coincide with a generatrix at a conical surface and an optional roll pallet can be stopped at a predetermined position so as to store or take out the process rolls in respect to the roll pallet.Type: GrantFiled: February 10, 2004Date of Patent: March 27, 2007Assignee: Think Laboratory Co., Ltd.Inventors: Tatsuo Shigeta, Shigeru Suzuki
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Patent number: 7157213Abstract: There is provided a developer agent for a positive type photosensitive compound having a near infrared wave length region laser sensitive characteristic in which a photosensitive portion of the compound exposed and reacted with a laser of the near infrared wavelength region is enabled to be dissolved in the developer liquid. This developer agent contains a) water; b) either one of or two kinds or more of tetramethyl ammonium hydroxide, benzyl triethyl ammonium hydroxide, ortho silicate soda, etc., applied as either organic or non-organic alkali capable of becoming a major material; and c) potassium pyrophosphate, tripolyphosphate soda, etc., applied as liquid agent having dampening action for preventing a reduction in pH value.Type: GrantFiled: March 1, 2004Date of Patent: January 2, 2007Assignee: Think Laboratory Co., Ltd.Inventor: Tsutomu Sato
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Patent number: 7069851Abstract: This invention provides a gravure printing method and a gravure printed item under application of cells of AM screen and cells of FM screen. The cells corresponding to the letters and the lettering images requiring a dark ink concentration and the like are formed by the AM screen and the cells corresponding to the photographic image and some fine lines expressed by the gradation are formed by the AM screen.Type: GrantFiled: January 20, 2004Date of Patent: July 4, 2006Assignee: Think Laboratory Co., Ltd.Inventor: Kaku Shigeta
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Patent number: 6911300Abstract: There is provided a photogravure plate making method capable of performing a quite superior photogravure plate making operation while it has a requisite and sufficient developing latitude under non-heating condition after forming a coating film and while applying a positive O-type thermal resist.Type: GrantFiled: November 10, 2003Date of Patent: June 28, 2005Assignee: Think Laboratory Co., Ltd.Inventors: Tsutomu Sato, Kaku Shigeta, Tatsuo Shigeta
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Patent number: 5338627Abstract: A method of manufacturing a rotary halftone screen which has no slit or meshless portion by the use of galvano process including a step of exposing the roll coated with high-sensitivity photosensitive film by a multiple number of laser beams. The multiple number of laser beams are controlled by preset electric data so that desired halftone points of negative halftone image are exposed on the roll.Type: GrantFiled: May 22, 1992Date of Patent: August 16, 1994Assignee: Think Laboratory Co., Ltd.Inventor: Tatsuo Shigeta
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Patent number: 5328537Abstract: A method of manufacturing a screen printing plate which can be obtained without using a mother mesh sheet and a resist film including a step of providing a non-plating area on the roll and exposing the roll coated with high-sensitivity photosensitive film by a multiple number of laser beams. The multiple number of laser beams are controlled by preset electric data so that the desired halftone points of negative halftone image are exposed on the roll.Type: GrantFiled: April 15, 1992Date of Patent: July 12, 1994Assignee: Think Laboratory Co., Ltd.Inventor: Tatsuo Shigeta
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Patent number: 5279861Abstract: A coating method is performed by positioning a coating roll directly beneath one end of a predetermined coating range of a printing roll so that the coating roll is perpendicular to the printing roll. The rotating roll rotates and carries a coating liquid which is to be coated on the printing roll that is held horizontally. The printing roll is rotated, and the coating roll is also rotated in a direction in which the carrying of the coating liquid takes place on a leading side of the rotating roll with respect to the traveling direction of the coating roll. The coating roll and is moved from one end to the other of the coating range on the printing roll in such a manner that the coating roll is kept in contact with the printing roll and the coating liquid is coated on the printing roll.Type: GrantFiled: September 21, 1990Date of Patent: January 18, 1994Assignee: Think Laboratory Co., Ltd.Inventor: Kaku Shigeta
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Patent number: 5253006Abstract: A developing method and apparatus for performing a multi-treatment that comprises developing, washing, and drying a roll which is to be made into a printing plate. The treatments are performed by a single developing unit that includes a developing solution apply brush, a solution wash-away brush and a wash water suction-remover which are mounted on a horizontally and vertically movable table in the order of treatment so that these component come into contact with the rotating roll and successively perform the multi-treatment while they are rotated.Type: GrantFiled: May 20, 1991Date of Patent: October 12, 1993Assignee: Think Laboratory Co., Ltd.Inventor: Kouichi Takakura
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Patent number: 5201951Abstract: A plate making device for a plate roll that is to be made into a printing plate in which a pretreatment assembly, a photosensitive film coating assembly, and a protective film coating assembly are respectively installed on three separate tables that can be raised and lowered relative to the plate roll. The three separate tables are provided on a common table that is slidable along the axis of the plate roll. The three separate tables and the common table are moved so that a pretreatment assembly, a photosensitive film coating assembly and a protective film coating assembly are successively come into contact with the plate roll, and a pretreatment, a photosensitive film coating and a protective film coating are successively performed on the plate roll by the pretreatment assembly, the photosensitive film coating assembly and the protective film coating assembly. Thus, the entire plate making processes is performed by a single device, occupying lesser spaces.Type: GrantFiled: January 10, 1992Date of Patent: April 13, 1993Assignee: Think Laboratory Co., Ltd.Inventor: Tatsuo Shigeta
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Patent number: 5164285Abstract: A method for forming plate characters in a half-tone gravure platemaking process wherein the laser beam is moved so that it will be irradiated on a light sensitive material for forming a plate character on the light-sensitive material by exposure. The plate character is made with a frame portion and a filling portion. The frame portion is formed with continuous groove-form cells which have a predetermined length and width and dot-form projections are formed in the groove-form cells for preventing ink flow. The filling portion is formed by dot-form cells which have a shadow-portion dot percentage.Type: GrantFiled: September 26, 1990Date of Patent: November 17, 1992Assignee: Think Laboratory Co., Ltd.Inventor: Kouichi Takakura
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Patent number: 5122897Abstract: An optical beam modulating device used for recording halftone plate duplicate images on a recording material including two multi-channel optical beam modulators, each including a rectangular parallelepiped modulator crystal which has a prescribed number of acoustic electrodes installed on one side surface. The electrodes are installed at equal pitch intervals so that Gauss beams can be directed across the electrodes separately from each other, and the positions at which the electrodes of one modulator are installed are shifted by one-half pitch with respect to the positions at which the acoustic electrodes of the other modulator are installed.Type: GrantFiled: December 16, 1988Date of Patent: June 16, 1992Assignee: Think Laboratory Co., Ltd.Inventor: Hiroshi Taniura