Patents Assigned to Riso Kagaku Corporation
  • SHEET CONVEYING APPARATUS
    Publication number: 20190062095
    Abstract: A conveying apparatus includes: a first roller and a second roller configured to convey a print sheet while nipping the print sheet at a nip pressure; an adjustor supporting the first roller and the second roller in a manner capable of adjusting an inter-axial distance between the first roller and the second roller, the adjustor being configured to apply a biasing force biasing the second roller toward the first roller and capable of adjusting the biasing force; and a controller configured to control the nip pressure by driving the adjustor to adjust the biasing force.
    Type: Application
    Filed: August 13, 2018
    Publication date: February 28, 2019
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Kenji KUDO
  • Printer with time information comparing function
    Patent number: 10209930
    Abstract: A printer includes: an image former configured to form an image on a sheet based on a print job; a processor; and a memory including instructions that, when executed by the processor, cause the processor to perform operations. The operations include: comparing first time information indicating time information set for a region where the printer is allowed to be present and second time information indicating time information in a region where the printer is currently present and determining whether a time difference between the first time information and the second time information is greater than a predetermined time, and upon determining that the time difference is greater than the predetermined time, calling for execution of maintenance of the printer and selectably displaying options of the execution of the maintenance of the printer and execution of limited print processing by the image former.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: February 19, 2019
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Takahiro Fushimi, Takaomi Ueda
  • PRINTING APPARATUS WITH COOLING FAN
    Publication number: 20190047306
    Abstract: A printing apparatus includes: a case having a door; a duct installed on an inner side of the door in the case and communicating with an outside of the case; a cover installed in the case and having an opening, the opening allowing an inside of the case and the outside of the case to communicate with each other via the duct of the door being closed; a fan configured to perform at least one of drawing of air into the case or exhausting of air from the case via the opening and the duct with the door being closed; and a shutter configured to open the opening during drive of the fan and close the opening while the door is open.
    Type: Application
    Filed: June 29, 2018
    Publication date: February 14, 2019
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Naoki SASAKI
  • Sheet folding device
    Patent number: 10196227
    Abstract: A sheet folding device includes first and second folding rollers as a pair arranged on a sheet transfer path located downstream of a printing unit and configured to form a fold on a printed sheet. At least the first folding roller includes a small-diameter portion formed at a position corresponding to a range of a width of a separating roller in the sheet width direction, and a large-diameter portion formed at a position other than the position of the small-diameter portion.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: February 5, 2019
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Kunihiro Maeda
  • PAPER SUPPLY APPARATUS
    Publication number: 20190031460
    Abstract: A paper supply apparatus includes: a primary paper supply roller that feeds out and conveys a print medium from a paper tray on which the print medium is placed; resist rollers that a leading end of the print medium abuts to form a flexure in the print medium by temporarily ceasing conveyance, and rotate at a predetermined timing after this flexure is formed, to convey the print medium toward a conveyance mechanism; and a control unit that executes assist control that drives the primary paper supply roller during the time that the print medium is being conveyed by the resist rollers to assist conveyance of the print medium by the resist rollers. The control unit executes the assist control such that the flexure in the print medium remains at a point in time at which the leading end of the print medium reaches the conveyance mechanism.
    Type: Application
    Filed: May 16, 2018
    Publication date: January 31, 2019
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Ryo TERAKADO
  • Conveyance apparatus of web print medium
    Patent number: 10189286
    Abstract: A conveyance apparatus includes a conveyance roller, a conveyance motor, a back tension roller, a conveyance speed detector, a brake, and a controller. The controller is configured to: based on a conveyance speed of a web detected by the conveyance speed detector, control a value of a drive control parameter of the conveyance motor such that the conveyance speed of the web is equal to a target speed; and, based on an output torque of the conveyance motor corresponding to the value of the drive control parameter, adjust a braking force of the brake applied to the back tension roller which applies a tension to the web such that the tension of the web is equal to a target tension.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: January 29, 2019
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Kazuyuki Aoki
  • Inkjet printing machine
    Patent number: 10179448
    Abstract: An inkjet printing machine includes a controller and performs margin-less printing on a base material on the basis of image data having a size larger than that of the base material by discharging ink from an inkjet head while relatively moving the base material and the inkjet head for one cycle of reciprocation or more in a main-scanning direction. On the basis of the image data, the controller controls the inkjet head to stop discharging ink, when the inkjet head is moved from the outside toward an end of the base material. The controller controls, when the inkjet head is moved from the inside toward the end of the base material, the inkjet head to discharge ink to complement an image in a section where the inkjet head stops discharging ink.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: January 15, 2019
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Mamoru Saito
  • INK JET PRINTER PROVIDED WITH MOVABLE SHUTTLE
    Publication number: 20180370226
    Abstract: A controller forms an image on a print medium by alternately repeating: a first operation of driving an inkjet head to eject ink from the inkjet head to the print medium while driving a main scanning driver to move the inkjet head in a main scanning direction; and a second operation of driving a sub-scanning driver to move a shuttle in the sub-scanning direction. The controller performs a multi-stage brake control to stop the shuttle in the second operation, and in a second stage and a stage after the second stage of the multi-stage brake control, apply brake to the shuttle at such a timing that a direction of vibration of the shuttle and a direction of force of inertia of the shuttle in braking of the shuttle are opposite to each other.
    Type: Application
    Filed: December 5, 2016
    Publication date: December 27, 2018
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Katsuhiko MATSUNAGA, Atsushi TANAKA
  • Inkjet printer with density correction function
    Patent number: 10150301
    Abstract: A controller of an inkjet printer: calculates second density correction values for respective nozzles arranged in a predetermined direction to print a second line of an image data, by using gray-level values of pixels in the second line of the image data corresponding to the respective nozzles and first density correction values for the respective nozzles to print a first line of the image data printed immediately prior to the second line; and corrects the gray-level values of the pixels in the second line of the image data corresponding to the respective nozzles, by using the calculated second density correction values.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: December 11, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Hironori Inagawa
  • Aqueous inkjet ink set for textile printing and method for producing printed textile item
    Patent number: 10150881
    Abstract: An aqueous inkjet ink set for textile printing is disclosed, the aqueous inkjet ink set including a first ink containing a water-dispersible resin having a glass transition point of less than ?5° C., a coloring material and water, and a second ink containing a water-dispersible resin having a glass transition point of from ?5° C. to 35° C., a coloring material and water. A method for producing a printed textile item is also disclosed.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: December 11, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Takahisa Yamazaki, Yuki Urano, Hideki Imanishi, Shunsuke Uozumi
  • Colored resin particle dispersion
    Patent number: 10144839
    Abstract: A colored resin particle dispersion having improved fixation to the printed item immediately after printing and improved color development properties for the printed item, and an inkjet ink containing the colored resin particle dispersion. The colored resin particle dispersion contains colored resin particles, a basic dispersant, and a non-aqueous solvent, wherein the colored resin particles contain a colorant and a (meth)acrylic-based resin, and the (meth)acrylic-based resin has a unit A having a carboxyl group, a unit B having a phosphoric acid group and/or a phosphate ester group, and a unit C having an aromatic ring.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: December 4, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Manami Shimizu, Yoshifumi Watanabe
  • Inkjet printing apparatus with pairs of conveyance rollers
    Patent number: 10137707
    Abstract: A second inkjet head, a second platen, and a second pair of conveyance rollers configured to convey a sheet toward the second platen downward with respect to a horizontal direction are arranged at lower positions than a first inkjet head arranged upstream of the second inkjet head, a first platen arranged upstream of the second platen, a first pair of conveyance rollers arranged upstream of the second pair of conveyance rollers and configured to convey the sheet toward the first plates downward with respect to the horizontal direction, respectively.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: November 27, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Yoshihisa Morita
  • Printer with different conveyance speeds of recording medium
    Patent number: 10131164
    Abstract: A printer includes: a first conveyor configured to convey a recording medium during image formation by an image former at a first conveyance speed based on a print condition of the image formation by the image former; a second conveyor configured to convey the recording medium at a second conveyance speed higher than the first conveyance speed; and a third conveyor arranged between the first conveyor and the second conveyor on a conveyance route. The third conveyor is configured to start acceleration of the recording medium after a recording region trailing end of the recording medium passes the image former and accelerate the recording medium such that a speed of the recording medium increases to the second conveyance speed not later than a time point when a leading edge of the recording medium reaches the second conveyor.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: November 20, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Masashi Hara
  • Printing machine
    Patent number: 10120622
    Abstract: A printing machine includes a storing unit, a determination section, and an execution section. The storing unit stores MAC addresses of information processing machines when the power is turned off. The determination section collects MAC addresses of information processing machines through a network when the printing machine is turned on. The determination section determines which of an initial configuration support process and a registration support process is to be executed on the basis of the number of changes in a comparison of the MAC address collected and the MAC address stored in the storing unit, the initial configuration support process supporting an execution of an initial configuration of the printing machine, the registration support process supporting an execution of a registration process of the terminal. The execution section executes a process determined by the determination section.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: November 6, 2018
    Assignee: Riso Kagaku Corporation
    Inventor: Atsushi Takata
  • DISPLAY CONTROL DEVICE FOR HORIZONTALLY-WRITTEN LANGUAGE
    Publication number: 20180315397
    Abstract: A controller determines whether a language of an object in display data including the object and a coordinate of a rendering reference point of the object is a right-to-left writing language, and upon determining that the language of the object is the right-to-left writing language, determines an upper-right corner of a display screen of a display panel as a reference point, determines a position of the rendering reference point of the object on the display screen based on the determined reference point and the coordinate of the rendering reference point of the object included in the display data, and drives the display panel to display the object on the display screen based on the determined position of the rendering reference point on the display screen.
    Type: Application
    Filed: April 11, 2018
    Publication date: November 1, 2018
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Tutomu ENDOU
  • Printing apparatus with authentication function
    Patent number: 10114594
    Abstract: A controller performs a first processing including: at a predetermined timing, determining whether a first authentication code stored in a storage of a control board attached to a first control board attachment portion matches a second authentication code stored in a storage of a control board attached to a second control board attachment portion; upon determining that the first authentication code matches the second authentication code, allowing a printer to execute a print processing; and upon determining that the first authentication code does not match the second authentication code, prohibiting the printer from executing the print processing.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: October 30, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Takaomi Ueda, Takahiro Fushimi
  • Inkjet printing apparatus for web being print medium
    Patent number: 10105977
    Abstract: An inkjet printing apparatus includes: a print bar unit including an inkjet head configured to eject ink to a web being conveyed; and a guide configured to guide movement of the print bar unit in a print bar movement direction intersecting a conveyance direction of the web between a first position, a second position, and a third position. The first position is a position where the print bar unit performs printing on the web. The second position and third position are located on one and the other sides of the first position in the print bar movement direction.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 23, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Akira Nishiyama, Tetsunori Saito, Tomohiko Shimoda
  • Oil-based inkjet ink
    Patent number: 10106639
    Abstract: An oil-based inkjet ink that exhibits excellent repellency by the nozzle plate, prevents degradation of the nozzle plate, reduces image show-through, and yields high image density. The oil-based inkjet ink includes an encapsulated pigment containing a pigment and a urethane compound that coats the surface of the pigment, and a non-aqueous solvent, wherein the urethane compound has a urethane skeleton and one or more side chains and is insoluble in the non-aqueous solvent, and the side chains of the urethane compound contain one or more moieties selected from the group consisting of an aromatic ring, a heterocyclic ring, a carboxyl group, an amide linkage, a fluoroalkyl group having one or more fluorine atoms, and a nitrile group.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: October 23, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Yoshifumi Watanabe, Manami Shimizu, Kenji Yamada, Tomohiro Matsuzawa
  • Ink fill device, ink filling method, ink cartridge manufacturing method and ink cartridge
    Patent number: 10099481
    Abstract: A joint section of a fill device is coupled to a supply opening of an ink cartridge, and a pressing force section presses an inside plug of the ink cartridge into the supply opening, to press down the inside plug against a biasing unit and release an opening to connect an ink fill section with an ink container. A first pump is operated and fills ink to the inside of the ink container. After the filling, the joint section separates from the supply opening, and the inside plug seals the supply opening by the biasing unit. Ink is filled with no spilling, into the ink container having an ink supply section with valve, and the ink cartridge can be manufactured with good efficiency.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: October 16, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Eijiro Arimura, Toshimasa Hoshino
  • Wireless communication tag
    Patent number: D841607
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: February 26, 2019
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Hiroyuki Sunagawa