Rotary Machines Patents (Class 101/116)
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Patent number: 7712412Abstract: A stencil printer of the present invention includes a printer body, a print drum rotatably mounted on the printer body, a press roller for pressing a sheet against the circumferential surface of the print drum, and a moving device for selectively moving the press roller into or out of contact with the outer circumference of the print drum. The press roller and moving device are capable of being pulled out from the printer body integrally with each other.Type: GrantFiled: September 12, 2006Date of Patent: May 11, 2010Assignee: Tohoku Ricoh Co., Ltd.Inventor: Kazuyoshi Kobayashi
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Patent number: 7677170Abstract: The present invention relates to a device for placing and removing a doctor blade in a printing screen cylinder mounted on a printing machine having a support mounted on the frame of the machine in the continuation of the cylinder, and a track mounted on the support and designed to allow a slider to move parallel only to the axis of the cylinder between a first limit position situated outside of the cylinder and a second limit position situated inside the cylinder facing the working position of the doctor blade.Type: GrantFiled: April 19, 2005Date of Patent: March 16, 2010Assignee: KBA-Giori S.A.Inventors: Günther Hoier, Matthias Gygi, Eric Wagner
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Patent number: 7677171Abstract: The machine comprises at least a printing cylinder (4), an inking cylinder (5) and a chain gripper transporting system (2,3) with grippers (17). The printing cylinder (4) comprises at least one transversal pit (7) for receiving said chain gripper system (3) such that the inking cylinder (5) inks the planar object (1) while said object (1) is held by said chain gripper system (3).Type: GrantFiled: March 23, 2005Date of Patent: March 16, 2010Assignee: KBA-Giori S.A.Inventor: Johannes Georg Schaede
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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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Patent number: 7654199Abstract: A printing device capable of printing with either UV curable ink or non-UV curable ink and having a function of controlling so that printing under the printing conditions of the printing device in accordance with the selected ink to be used can be performed with simple operation. The printing device has a controller for performing control of executing warning report and/or disabling printing operation, when the type of the ink identified by the ink type detection device is not consistent with the type of the master identified by the master type detection device.Type: GrantFiled: March 3, 2006Date of Patent: February 2, 2010Assignee: Tohoku Ricoh Co., Ltd.Inventor: Koji Nagai
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Patent number: 7617770Abstract: In a stencil printing apparatus capable of duplex printing, in which a front surface printing process for printing a front surface image on one surface of a sheet of paper fed by a sheet feeding unit is performed, the sheet is re-fed to a sheet re-feeder, and then a rear surface printing process for printing a rear surface image on the other surface is performed. The positions of the front surface image and rear surface image to be formed on the sheet can be moved together by a predetermined amount in a single direction side of a sheet conveyance direction.Type: GrantFiled: December 27, 2007Date of Patent: November 17, 2009Assignee: Tohoku Ricoh Co., Ltd.Inventors: Masaru Ohdaira, Toshiharu Hasegawa
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Patent number: 7536950Abstract: To make the stencil printing at a stabilized density from the start of printing in a stencil printing where a plurality of kinds of inks different from each other in volatility and/or viscosity are used. Information representing the volatility and/or viscosity of ink is stored in a storage means of an ink container, while the stored information representing the volatility and/or viscosity of ink is read out, and at the same time, the ceasing time from interruption of printing to resumption of the same is measured, and the printing pressure is controlled according to the ceasing time and the information representing the volatility and/or viscosity of ink.Type: GrantFiled: March 10, 2008Date of Patent: May 26, 2009Assignee: Riso Kagaku CorporationInventors: Kenji Oshima, Takashi Isozaki, Manabu Iwamoto
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Patent number: 7530304Abstract: To make the stencil printing at a stabilized density from the start of printing in a stencil printing where a plurality of kinds of inks different from each other in volatility and/or viscosity are used. Information representing the volatility and/or viscosity of ink is stored in a storage means of an ink container, while the stored information representing the volatility and/or viscosity of ink is read out, and at the same time, the ceasing time from interruption of printing to resumption of the same is measured, and the printing pressure is controlled according to the ceasing time and the information representing the volatility and/or viscosity of ink.Type: GrantFiled: March 10, 2008Date of Patent: May 12, 2009Assignee: Riso Kagaku CorporationInventors: Kenji Oshima, Takashi Isozaki, Manabu Iwamoto
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Patent number: 7497162Abstract: The invention relates to a method for reducing register errors on a web of material (04) moving through the printing nip of a multicolor web-fed rotary press, comprising the following steps: providing a portion between an area of the web of material (04) located between the two lateral edges of the web of material (04) and areas in the vicinity of the lateral edges of the web of material with a deformation relative each other in a direction perpendicular to the plane of rotation of the web of material (04) subject to a register error occurring in the direction of rotation of the web of material (04).Type: GrantFiled: September 1, 2004Date of Patent: March 3, 2009Assignee: Koenig & Bauer AktiengesellschaftInventor: Thomas Potzkai
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Publication number: 20090031905Abstract: A printing press, comprising: two mandrels positioned with axes aligned and in parallel; a plurality of wheel elements, with a different one of the wheel elements disposed around each end of each of the mandrels, wherein at least one of the wheel elements on one of the mandrels is a drive wheel; a rotary screen extending lengthwise between and around the wheel elements at the ends of the mandrels; and an ink repository positioned to provide ink to the rotary screen.Type: ApplicationFiled: August 3, 2007Publication date: February 5, 2009Inventor: John B. HOWARD
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Patent number: 7458319Abstract: The invention relates to a screening machine comprising a frame and two bearing arrangements which are arranged thereon for the rotational positioning of a screening cylinder, whereby the bearing arrangements comprise rings which are rotationally driven around a common axis and which support catches on the sides opposite to each other. In order to enable the head piece of the screening cylinder to be mounted on the ring, said catches can be positioned on one half of the periphery thereof.Type: GrantFiled: June 20, 2007Date of Patent: December 2, 2008Assignee: KBA-GIORI S.A.Inventor: Manfred Georg Stöhr
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Patent number: 7444933Abstract: A stencil printer of the present invention perforates, or cuts, a thermosensitive stencil with a thermal head to thereby make a master. The stencil printer includes a stencil distinguishing device for automatically identifying the kind of the stencil or a master setting device for allowing the operator of the printer to set the kind of the stencil. An adjusting device selects, among master making conditions experimentally determined beforehand, a master making condition matching with information output from the stencil distinguishing device or the stencil setting device. The operator can easily change the master making condition in accordance with the kind of a stencil to use.Type: GrantFiled: July 26, 2004Date of Patent: November 4, 2008Assignee: Tohoku Ricoh Co., Ltd.Inventors: Yasunobu Kidoura, Yoshiyuki Shishido, Yasumitsu Yokoyama, Satoshi Katoh
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Patent number: 7430961Abstract: To make the stencil printing at a stabilized density from the start of printing in a stencil printing where a plurality of kinds of inks different from each other in volatility and/or viscosity are used. Information representing the volatility and/or viscosity of ink is stored in a storage means of an ink container, while the stored information representing the volatility and/or viscosity of ink is read out, and at the same time, the ceasing time from interruption of printing to resumption of the same is measured, and the printing pressure is controlled according to the ceasing time and the information representing the volatility and/or viscosity of ink.Type: GrantFiled: December 19, 2003Date of Patent: October 7, 2008Assignee: Riso Kagaku CorporationInventor: Manabu Iwamoto
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Patent number: 7415926Abstract: A stencil clamping portion which clamps a tip end of a stencil sheet on an outer peripheral wall of a drum is provided, and the stencil sheet clamped by the stencil clamping portion is wound and attached around the outer peripheral wall. The stencil clamping portion includes an insertion slit which is provided along an axial direction of the drum and open to a surface of the outer peripheral wall, and an elastic sheet which pinches the stencil sheet inserted into the insertion slit. The tip end of the stencil sheet is inserted into the insertion slit by an insertion blade, and pinched by the elastic sheet.Type: GrantFiled: January 11, 2005Date of Patent: August 26, 2008Assignee: Riso Kagaku CorporationInventors: Akira Nakamura, Taku Naitou
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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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Patent number: 7401551Abstract: A stencil printing machine includes a drum on which a stencil sheet is mounted, and a pressure roller which presses a print sheet fed between the drum and the pressure roller and rotates together with the drum. The print sheet is fed from an upstream side of the pressure roller in a conveying direction, an image is transferred from the stencil sheet onto the fed print sheet in a process where the print sheet passes between the drum and the pressure roller, and the print sheet on which the image is transferred is discharged to a downstream side of the pressure roller in the conveying direction.Type: GrantFiled: February 24, 2005Date of Patent: July 22, 2008Assignee: Riso Kagaku CorporationInventors: Akira Nakamura, Taku Naitou
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Publication number: 20080168912Abstract: To make the stencil printing at a stabilized density from the start of printing in a stencil printing where a plurality of kinds of inks different from each other in volatility and/or viscosity are used. Information representing the volatility and/or viscosity of ink is stored in a storage means of an ink container, while the stored information representing the volatility and/or viscosity of ink is read out, and at the same time, the ceasing time from interruption of printing to resumption of the same is measured, and the printing pressure is controlled according to the ceasing time and the information representing the volatility and/or viscosity of ink.Type: ApplicationFiled: March 10, 2008Publication date: July 17, 2008Inventors: Kenji Oshima, Takashi Isozaki, Manabu Iwamoto
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Publication number: 20080168911Abstract: To make the stencil printing at a stabilized density from the start of printing in a stencil printing where a plurality of kinds of inks different from each other in volatility and/or viscosity are used. Information representing the volatility and/or viscosity of ink is stored in a storage means of an ink container, while the stored information representing the volatility and/or viscosity of ink is read out, and at the same time, the ceasing time from interruption of printing to resumption of the same is measured, and the printing pressure is controlled according to the ceasing time and the information representing the volatility and/or viscosity of ink.Type: ApplicationFiled: March 10, 2008Publication date: July 17, 2008Inventors: Kenji Oshima, Takashi Isozaki, Manabu Iwamoto
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Publication number: 20080127840Abstract: A method of operating an anilox printing unit in which ink accumulates on and detaches from a feed blade and, after detaching from the feed blade, forms ink accumulations on a screen roller, and in which a gap is formed between the screen roller and a further roller for the ink accumulations to pass through the gap without contacting the further roller, includes forming the gap by displacing the axis of the further roller and evening out the ink accumulations on the screen roller to such an extent that the ink accumulations that have been evened out pass the gap without contacting the further roller. A smoothing roller, for example, may be used to even out the ink accumulations. A printing press for carrying out the method is also provided.Type: ApplicationFiled: December 5, 2007Publication date: June 5, 2008Applicant: HEIDELBERGER DRUCKMASCHINEN AGInventors: Gisela Binder, Suat Demir, Jurgen Michels, Dieter Schaffrath, Jorg Schilfahrt, Wolfgang Schonberger, Bernhard Schwaab, Michael Thielemann
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Patent number: 7370577Abstract: A stencil printing machine includes a rotatable drum having an outer circumferential wall formed by an ink impermeable member, a stencil clamping part for clamping a leading end of a stencil sheet, an ink supply unit having an ink supply opening for supplying a surface of the outer circumferential wall with ink, a press roll for pressing a printing paper against the outer circumferential wall of the drum, an ink recovery unit having an ink recovery opening formed on a downstream side of a maximum printing area in a printing direction to collect ink flowing into the ink recovery opening by suction, the maximum printing area being defined on the outer circumferential wall, and a press unit for pressing the stencil sheet onto the outer circumferential wall of the drum and a control unit for controlling respective operations of the main motor, the ink recovery unit and the press unit.Type: GrantFiled: August 1, 2006Date of Patent: May 13, 2008Assignee: Riso Kagaku CorporationInventors: Taku Naitou, Hiroshi Usuda, legal representative, Keita Usuda
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Patent number: 7370576Abstract: A stencil printing method employs a stencil printing machine comprising: a drum which is rotatable and has a outer peripheral wall formed by an ink impermeable member and in which a stencil sheet is mounted on a surface of the outer peripheral wall; an ink supply device which has an ink supply unit provided on the outer peripheral wall of the drum and supplies ink on the surface of the outer peripheral wall from the ink supply unit; and a pressure roller which presses a fed print medium onto the outer peripheral wall; the method comprising: a step of mounting a stencil sheet on the drum; a step of plate-making the stencil sheet; and a step of transferring a water-based ink to a print medium by making the water-based ink pass through perforations of the stencil sheet.Type: GrantFiled: March 18, 2005Date of Patent: May 13, 2008Assignee: Riso Kagaku CorporationInventors: Akira Nakamura, Taku Naitou, Takuya Shibahara, Yoshihiro Hayashi
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Patent number: 7363855Abstract: A process progress display device includes a stencil making block which displays a progress status of a stencil making process, a printing block which displays a progress status of a printing process, a stencil making stop bar which displays whether or not an entire process is to be stopped at an end of the stencil making process, and a printing stop bar which displays whether or not the entire process is to be stopped at an end of the printing process.Type: GrantFiled: February 23, 2004Date of Patent: April 29, 2008Assignee: Riso Kagaku CorporationInventors: Yasuhiro Esaki, Takayuki Tokozume, Mayumi Furukawa
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Publication number: 20080092758Abstract: In a rotary screen device in which ink is transferred through holes of a screen, with a rotary screen cylinder provided with the screen being rotated, to carry out printing, the rotary screen cylinder is stopped, in accordance with a stop signal, at a position at which a pattern-free portion (a hole-free portion) of the screen comes to a lowermost position. Since the rotation of a stencil printing press is stopped in a rotation phase in which the pattern-free portion of the screen comes to the lowermost position, ink is prevented from dripping through the holes of the screen.Type: ApplicationFiled: October 19, 2007Publication date: April 24, 2008Inventors: Hiromitsu Numauchi, Isao Komuro, Akehiro Kusaka
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Patent number: 7331285Abstract: A squeegee unit for a rotary screen-printing device comprises a squeegee (2) with a squeegee edge (3) which is designed, during operation of a rotary screen-printing device in which the squeegee unit is mounted, to be pressed onto the inner side of a cylindrical screen of the rotary screen-printing device, and a squeegee holder (1) in which the squeegee is mounted. The squeegee edge (3) can be moved away from the squeegee holder (1) and towards the squeegee holder. A resilient element (18) is arranged between the squeegee edge (3) and the squeegee holder (1), in such a manner that the squeegee edge is pressed away from the squeegee holder by spring force. The squeegee unit is provided with travel-limiting means which are designed in such a manner that the squeegee edge (3) can be moved over a relatively short distance of at most 1 mm and preferably of at most 0.5 from the working position in a direction away from the squeegee holder.Type: GrantFiled: July 23, 2003Date of Patent: February 19, 2008Assignee: Stork Prints B.V.Inventors: Arnoldus Theodorus Steenkamer, Dirk Steenbeek
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Patent number: 7331284Abstract: A stencil printer includes at least an upstream and a downstream printing section, as seen in the direction of sheet conveyance, each including a print drum and a press roller for pressing a sheet against the print drum. An intermediate conveyor, positioned between the upstream and downstream printing sections, conveys the sheet from the former toward the latter. A dual master, formed with a first and a second image, is wrapped round the print drum of the upstream printing section. This printing section includes a refeeding device, a path selector, and a switching device.Type: GrantFiled: February 28, 2006Date of Patent: February 19, 2008Assignee: Tohoku Ricoh Co., Ltd.Inventor: Mituru Takahashi
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Patent number: 7325492Abstract: A stencil printer of the present invention includes a print drum and a pressing member selectively movable into or out of contact with the print drum. A duplex master, formed with a first and a second image in the lengthwise direction thereof, or a simplex master formed with a third image is wrapped around the print drum in a duplex mode or a simplex mode, respectively. The stencil printer is capable of selectively performing a duplex print mode operation, which consists of a front printing step and a rear pining step following the front printing step, or a simplex print mode operation. When the operator of the printer selects the duplex print mode to cause the duplex master to be wrapped around the print drum and then replaces the duplex print mode with the simplex print mode, the stencil printer produces an alarm and inhibits the simplex pint mode operation from being started.Type: GrantFiled: March 1, 2005Date of Patent: February 5, 2008Assignee: Tohoku Ricoh Co., Ltd.Inventor: Kazuyoshi Kobayashi
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Publication number: 20070251402Abstract: A stencil printing apparatus which suppresses master consumption by switching between simplex printing using a simplex master and single-step duplex printing using a duplex master automatically in accordance with master information and sheet information comprises a printing drum and pressing means, and can be made to switch between duplex printing, in which a rear surface printing step is performed after a front surface printing step, and simplex printing by wrapping a duplex master formed with a first engraved image and a second engraved image around the printing drum during duplex printing, and wrapping a simplex master formed with a third engraved image for simplex printing around the printing drum during simplex printing.Type: ApplicationFiled: February 28, 2007Publication date: November 1, 2007Applicant: Tohoku Ricoh Co., Ltd.Inventors: Tomohiro Monden, Toshiharu Hasegawa, Mituru Takahashi
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Patent number: 7287467Abstract: The invention relates to a screening machine comprising a frame and two bearing arrangements which are arranged thereon for the rotational positioning of a screening cylinder, whereby the bearing arrangements comprise rings which are rotationally driven around a common axis and which support catches on the sides opposite to each other. In order to enable the head piece of the screening cylinder to be mounted on the ring, said catches can be positioned on one half of the periphery thereof.Type: GrantFiled: December 16, 2002Date of Patent: October 30, 2007Assignee: KBA-Giori S.A.Inventor: Manfred Georg Stöhr
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Patent number: 7287466Abstract: A stencil printing machine has a rotatable printing drum including an outer peripheral wall of ink impermeable material. A stencil paper is mounted on the surface of the outer peripheral wall. An ink supplying mechanism includes an ink supplying unit in the outer peripheral wall of the printing drum. The ink supplying mechanism supplies ink from the ink supplying unit to the surface of the outer peripheral wall. A pressure roller presses a fed print sheet against the outer peripheral wall. An ink recovering mechanism recovers ink which has flown out of a maximum printing area of the outer peripheral wall of the printing drum. A pressing mechanism presses the stencil paper against the outer peripheral wall of the printing drum.Type: GrantFiled: August 27, 2004Date of Patent: October 30, 2007Assignee: Riso Kagaku CorporationInventors: Hirohide Hashimoto, Taku Naitou
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Patent number: 7284479Abstract: A stencil printer operable in a duplex print mode of the present invention prints an image on one side of a sheet and then prints another image on the other side of the same sheet. The printer includes at least one print drum and at least one press roller facing the print drum for pressing the sheet against the print drum. When the press roller is used to press the other side of the sheet against the print drum, the press roller is implemented as an elastic body provided with a fluorine compound layer on the surface thereof.Type: GrantFiled: July 25, 2003Date of Patent: October 23, 2007Assignee: Tohoku Ricoh Co., Ltd.Inventor: Mitsuo Sato
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Patent number: 7275481Abstract: A printer of the present invention includes a timing belt passed over drive pulleys, each of which is mounted on a particular print drum, via phase adjusting means and deflection pulleys or rotary members. The deflection pulleys are rotatable in contact with the rear surface of the timing belt. The timing belt has its rear surface ground to have uniform thickness. The printer is free from the deviation of relative phase between the rotary members and offset ghosts ascribable to the irregular thickness of the timing belt, while preserving the low-cost configuration of timing belt connection.Type: GrantFiled: February 28, 2001Date of Patent: October 2, 2007Assignee: Tohoku Ricoh Co., Ltd.Inventors: Keiichi Chiba, Hironobu Takasawa
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Patent number: 7261033Abstract: A printing machine includes a support stand, a plate rotational with respect to the stand about an axis of rotation, elements for driving the plate in rotation, at least two mandrels for holding two articles to be printed in succession, the mandrels being carried by the plate, elements for driving the mandrels in rotation about axes of rotation parallel to the axis of rotation of the plate, and a plurality of workstations distributed around the rotational plate. The machine includes elements for the displacement of each mandrel in a plane parallel to the plane of the plate, in order to modify the spacing between the axis of rotation of the mandrel and the axis of rotation of the plate. The elements for the displacement of the mandrels are designed to synchronize the displacement of each mandrel with the rotation of the plate.Type: GrantFiled: September 15, 2004Date of Patent: August 28, 2007Assignee: Machines DubuitInventors: Jean-Louis Dubuit, Francois Dumenil
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Patent number: 7194952Abstract: A stencil printing machine includes a rotatable printing drum including an outer peripheral wall of ink impermeable material. A stencil paper is mounted around the surface of the outer peripheral wall. An ink supplying mechanism includes an ink supplying unit in the maximum printing area of the outer peripheral wall of the printing drum and causes ink to be supplied from the ink supplying unit to the surface of the outer peripheral wall. A pressure roller presses a fed print sheet against the outer peripheral wall.Type: GrantFiled: August 27, 2004Date of Patent: March 27, 2007Assignee: Riso Kagaku CorporationInventors: Taku Naitou, Akira Nakamura
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Patent number: 7188564Abstract: Disclosed is a duplex printer which is capable of performing simplex printing without wasting a master and providing a print output with a satisfactory image quality at the time of duplex printing, and which is capable of suppressing an increase in installation space while effecting adjustment on the print image position in the sheet conveyance direction. The duplex printer includes a printing section, a sheet feeding section, a sheet discharging section, an auxiliary tray, refeeding means for refeeding a sheet having an image printed on its front side, and a path selector that steers the sheet to one of the auxiliary tray and the sheet discharging section. In a duplex printing mode, a master having first and second perforated images formed thereon side by side is wound around a print drum, thereby performing duplex printing.Type: GrantFiled: March 15, 2004Date of Patent: March 13, 2007Assignee: Tohoku Ricoh Co., Ltd.Inventor: Atsushi Ashikagaya
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Patent number: 7171895Abstract: A stencil material roll includes stencil material in a continuous length rolled around a core tube and a memory IC which stores predetermined information. The memory IC is mounted on a wall portion which forms a part of the core tube or on a wall portion fixed to the core tube, and an easy-to-cut portion is provided on the wall portion to surround the portion where the memory IC is mounted.Type: GrantFiled: February 24, 2004Date of Patent: February 6, 2007Assignee: Riso Kagaku CorporationInventors: Kenji Oshima, Morio Ohashi, Hitoshi Watanabe
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Patent number: 7134389Abstract: An efficiency is further improved in comparison with a conventional manual operation by automatically applying a material to a film-like body by a machine. A film-like body is delivered from a supply apparatus and is taken up by a take-up apparatus. A material is applied by a squeegee of a squeegee apparatus in the middle of the above, and is heated and dried by a reflow apparatus and an application of the material is executed by a rotation of a screen mask supported to a mask support body in a cylindrically wound state in correspondence to a moving speed of the film-like body, a slidable contact of the squeegee of the squeegee apparatus installed in an inner portion of the screen mask with an inner surface of the screen mask, and a downward extrusion of the material.Type: GrantFiled: July 15, 2004Date of Patent: November 14, 2006Assignee: Minami Co., Ltd.Inventor: Takehiko Murakami
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Patent number: 7127992Abstract: An arrangement for printing flat workpieces is provided and includes an application roller which rolls on the workpiece surface 6 to be printed and thereby applies a printed image to the workpiece surface 8, the application roller forming a printing cylinder 5 or a transfer roller 1 cooperating with a printing cylinder 5, a counter-roller 2 which forms in cooperation with the application roller a printing gap 3, through which the workpiece 4 passes during the printing process, and a transport device 7 for feeding the workpiece 4 into and out of the printing gap 3 formed by the application roller and the counter-roller 2.Type: GrantFiled: July 26, 2004Date of Patent: October 31, 2006Assignee: Robert Burkle GmbHInventors: Norbert Damm, Gerhard Dölker, Erich Schmider, Sascha Lämmle, Markus Heintel, Bernd Armbruster, Tobias Schreck
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Patent number: 7069850Abstract: A stencil printing machine, which includes: a drum which is freely rotatable and has an outer peripheral wall formed of an ink impermeable member, in which a stencil sheet is mounted on a surface of the outer peripheral wall; an ink supplying device for supplying, to the surface of the outer peripheral wall, an ink guided from an ink tank; an ink recovery device for recovering, from an ink recovery portion, an extra ink on the surface of the outer peripheral wall; and a pressure roller which presses a print medium to the outer peripheral wall. The ink tank includes a main tank portion where unused ink is stored, and a sub-tank portion where the ink recovered by the ink recovery device is stored. The ink supplying device preferentially supplies the ink in the sub-tank portion.Type: GrantFiled: April 5, 2005Date of Patent: July 4, 2006Assignee: Riso Kagaku CorporationInventors: Akira Nakamura, Taku Naitou, Takuya Shibahara
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Patent number: 7040222Abstract: A stencil printing machine includes: a drum which is freely rotatable and has an outer peripheral wall formed of an ink impermeable member, in which a stencil sheet is mounted on a surface of the outer peripheral wall; an ink supply device which has an ink supply port on the outer peripheral wall of the drum, and supplies ink to the surface of the outer peripheral wall from the ink supply port; a pressure roller which presses a print medium fed thereto to the outer peripheral wall; and a first cap device capable of closing the ink supply port. Moreover, the stencil printing machine further includes: an ink return device which has an ink return port on the outer peripheral wall, and returns the ink which flows into the ink return port; and a second cap device capable of closing the ink return port.Type: GrantFiled: January 24, 2005Date of Patent: May 9, 2006Assignee: Riso Kagaku CorporationInventors: Akira Nakamura, Taku Naitou, Takuya Shibahara, Yoshihiro Hayashi
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Patent number: 7004653Abstract: A printer equipped with a copy function is capable of carrying out a two-set double-sided printing, using a series of printing papers, each of which has a printed content on one side and a blank page on the other side. With the aid of a built-in processing unit, such a series of the printing papers are regarded as serial pairs of two adjacent printing papers, and an image on one side of each printing paper is read by an image sensor, and then copied on the other side of the printing paper adjacent thereto. When the number of all the printing papers is odd, an image read on one side from the last printing paper is copied on one side of a supplementary paper sheet. When the total number n of the printing papers initially read out is even, printing paper are sequentially fed to said image printer, and printing papers, each of which is placed on a paper feed tray for printing in such a manner that its blank page on the other side is printable, are received in the order of reading by the image printer.Type: GrantFiled: September 7, 2004Date of Patent: February 28, 2006Assignee: Funai Electric Co., Ltd.Inventor: Toshikatsu Tsukamoto
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Patent number: 6990899Abstract: A conveying route along which the leading edge side of a roll stencil sheet is conveyed to a stencil sheet clamp section of a printing drum is formed. Along the conveying route, arranged are: a writing head which forms a perforated image on the stencil sheet; a platen roller on which the writing head is brought into pressure contact and which conveys the stencil sheet; a stencil sheet cutter which cuts the stencil sheet; a stencil positioning sensor which detects a leading edge of the stencil sheet; and storage means for temporarily storing the stencil sheet.Type: GrantFiled: April 23, 2004Date of Patent: January 31, 2006Assignee: Riso Kagaku CorporationInventor: Kazuhiro Kato
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Patent number: 6935229Abstract: Improved air embossing systems, improved air lances, and improved methods of air embossing fabrics, which are able to produce an unprecedented level of fine detail, crisp transition between unembossed and embossed regions, lack of undesired embossing artifacts, and a high degree of uniformity across the width of an embossed fabric, when compared to the performance of typical, conventional air embossing systems are disclosed. The disclosed air embossing systems utilize generally cylindrical, rotating stencils with air lances positioned therein for directing a stream of air through apertures in the stencil and onto the embossable surface of a fabric.Type: GrantFiled: August 3, 2001Date of Patent: August 30, 2005Assignee: Microfibres, Inc.Inventors: William Laird, Kevin R. Crompton
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Patent number: 6931621Abstract: A system and method for developing a software application for manipulating data associated with an asset are provided. The system includes at least one processing unit. The system further includes at least one memory store operatively connected to the processing unit. The system further includes an extensible N-tier software resident in and executable within the at least one processing unit, wherein N corresponds to a positive integer value. The system further includes an inventory of software components resident in the memory store wherein a plurality of tiers are generated from the inventory of a software components using the N-tier software, each tier being associated with at least one other tier, and each tier comprising a plurality of software components and performing a predetermined function relating to an asset.Type: GrantFiled: December 22, 2000Date of Patent: August 16, 2005Assignee: Baker Hughes IncorporatedInventors: David W. Green, Kevin L. Banks, John W. Kiowski, Jr.
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Patent number: 6899024Abstract: A machine for stencil printing includes: a control panel for setting stencil making conditions and printing conditions; a stencil making section making a stencil sheet based on the stencil making conditions; a stencil winding section wrapping the perforated stencil sheet around a printing drum, the printing drum comprising a storage section; a printing section including a printing conditions adjustment section, the printing conditions adjustment section adjusting the printing section based on the printing conditions; and a control section storing the stencil making conditions of the stencil sheet and the printing conditions into the storage section at the time when the perforated stencil sheet is wrapped around the printing drum, the control section adjusting the printing condition adjustment section to print based on the stencil making conditions and the printing conditions in response to a direction of start of the printing processing.Type: GrantFiled: February 9, 2004Date of Patent: May 31, 2005Assignee: Riso Kagaku CorporationInventors: Hidetoshi Watanabe, Yoshiyuki Okada
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Patent number: 6886457Abstract: In perforating a stencil sheet, platen motor and feed motor are driven and thermosensitive perforation of the stencil sheet is started. From the state, the platen motor is driven continuously for ? second. When upstream side stencil sheet awaiting sensor is made ON and ? second has elapsed, speed of platen motor is controlled to reduce and actual perforation speed is made constant. Thereafter, when downstream side stencil sheet awaiting sensor is made ON and ? second has elapsed, feed motor is made OFF and stopped and lower side movable guide plate is moved to lower limit position by driving downstream side movable guide motor. Thereafter, when downstream side movable guide plate lower limit sensor is made ON, feed motor is made ON and driven again. When downstream side stencil sheet feed sensor is made ON and ? second has elapsed, feed motor is made OFF and stopped.Type: GrantFiled: February 12, 2001Date of Patent: May 3, 2005Assignee: Riso Kagaku CorporationInventor: Hideo Shoji
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Patent number: 6877427Abstract: A quality control device includes a suction box, at least one gripper which can be displaced along a suction surface of the suction box, and a CCD camera. A belt, which can be displaced in a sheet transport direction, is disposed on the suction surface of the suction box.Type: GrantFiled: June 6, 2002Date of Patent: April 12, 2005Assignee: Koenig & Bauer AktiengesellschaftInventors: Brigitte Dünninger, Gerald Josef Reinhard, Reinhold Dünninger
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Patent number: 6871589Abstract: A hybrid stencil printing apparatus comprises: a stencil-making/printing unit configured to perforate a stencil sheet corresponding to a desired image, to wind the stencil sheet around an outer peripheral surface of a print drum, and to transfer a printing medium to the print drum with pressure and the printing medium is printed; an other-method image-formation unit configured to print the printing medium transferred on the same transfer passage as the stencil-making/printing unit according to a different printing method from the stencil-making/printing unit; and an image-formation unit selection-unit configured to input an original digital image, to determine a attributes of each image portion of the inputted original digital image, and to allocate each image portion selectively to the stencil-making/printing unit or the other-method image-formation unit based on the determination result.Type: GrantFiled: February 6, 2004Date of Patent: March 29, 2005Assignee: Riso Kagaku CorporationInventor: Koichi Hashimoto
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Patent number: 6868779Abstract: A printing-cylinder support unit has a support frame and supporting means which are mounted on the support frame and are designed to rotatably support one of a plurality of printing cylinders in a retaining position. The supporting means have at least three support elements for each axial end of a printing cylinder, which support elements are each designed to interact with a running surface of a bearing ring which is connected to the printing cylinder. One of the support elements has a support ring and suspension means, connecting the support ring to the support frame such that it can rotate about its axis. The support ring is provided on the inner side with a support-ring running surface, and the support ring is designed so that, in the retaining position, the support-ring running surface comes into contact with the running surface of the bearing ring.Type: GrantFiled: November 6, 2003Date of Patent: March 22, 2005Assignee: Stork Prints B.V.Inventor: Carolus Josephus Antonius Maria Schrauwers
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Publication number: 20040250716Abstract: A stencil printer of the present invention includes a print drum implemented as a porous hollow cylinder rotatably supported and configured such that a perforated stencil is wrapped therearound. A pressing device forms a pressing portion when pressed against the print drum. A feeding device feeds a sheet toward the pressing portion. A registration roller pair conveys the sheet toward said pressing portion at preselected timing. One roller of the registration roller pair expected to contact, when the sheet carrying an image on its one surface is reversed and again fed by said feeding device, the one surface first is provided with a highly oil-repellent surface configuration.Type: ApplicationFiled: January 28, 2004Publication date: December 16, 2004Applicant: Tohoku Ricoh Co., Ltd.Inventors: Takayuki Onodera, Daisuke Hasebe, Kazuyoshi Kobayashi
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Patent number: 6823782Abstract: A stencil printing machine 1 is provided as including a downstream rotary printing drum 50 with an outer circumferential periphery 50a mounted with a stencil sheet 20, and a rotary press roller 56 which is moveable between a pressurized position to press an outer circumferential periphery 50a of the printing drum 50 and a separated position displaced from the outer circumferential periphery 50a of the printing drum 50, wherein a print sheet 45, which is fed, is pressed and transferred between the printing drum 50 and the press roller 56 which rotate together, and, during such a pressurized transfer stage, ink is transferred to the print sheet 45 to perform printing operation. The outer circumferential periphery of the press roller 56 is formed with micro-convexities and concavities.Type: GrantFiled: November 26, 2001Date of Patent: November 30, 2004Assignee: Riso Kagaku CorporationInventors: Hirohide Hashimoto, Yosuke Ike, Mitsuru Takeno