Patents Assigned to Riso Kagaku Corporation
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Publication number: 20180281424
    Abstract: An inkjet printer includes: at least one ink receptor having a tray shape with a bottom plate and an opening facing upward and being horizontally movable; and a suction unit. The at least one ink receptor is configured to receive ink ejected from at least one inkjet head as waste liquid. The suction unit includes at least one suction nozzle arranged above the bottom plate within a movable range of the at least one ink receptor and is configured to suction the ink in the at least one ink receptor through the opening with the at least one suction nozzle.
    Type: Application
    Filed: March 7, 2018
    Publication date: October 4, 2018
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Yasuhiro KATADA, Akira NISHIYAMA, Shunta NAKAMURA, Naoto TSUJINO
  • Publication number: 20180272738
    Abstract: An inkjet printer includes: a pressurized space and a depressurized space for circulation of ink along a circulation path; a main connection path and an adjustment path connecting the pressurized space and the depressurized space to each other; an air pump configured to send air from the depressurized space to the pressurized space though the main connection path or the adjustment path; a changeover device configured to change over between the main connection path and the adjustment path; and a controller. The controller drives the air pump with the main connection path being set to generate preset pressures respectively in the pressurized space and the depressurized space and then controls the air pump with the adjustment path being changed over to maintain pressures in the pressurized space and the depressurized space respectively at the preset pressures.
    Type: Application
    Filed: September 6, 2016
    Publication date: September 27, 2018
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Hiroshi SUGITANI
  • Patent number: 10082986
    Abstract: Upon satisfaction of a predetermined trigger condition with a first hard disk drive mounted in a first controller, a first processor executes a first common file stored in a first common file storage region and write and store a first configuration file into a first configuration file storage region. The first processor executes the first common file and the first configuration file of a first firmware program and drives a first print engine to execute a first job segment stored in a first job segment storage region.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: September 25, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Yongning Wang
  • Publication number: 20180270370
    Abstract: An image formation system includes: an encoded image generation device including a first processor that generates print data from manuscript data, sets security information for controlling a print mode of the print data, and generates an encoded image from the print data and the security information; and an image formation device including a second processor that inputs the encoded image, decodes the print data and the security data from the input encoded image, determines whether an output of the decoded print data is available in accordance with the decoded security information, and outputs the decoded print data when it is determined that the output of the print data is available.
    Type: Application
    Filed: January 25, 2018
    Publication date: September 20, 2018
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Junichi HAKAMADA
  • Patent number: 10071579
    Abstract: A printing apparatus includes a plurality of components for the printing apparatus, and a housing configured to house the plurality of components in an inside of the housing and having a plurality of access portions used by a user and a service man to access the inside of the housing. The access portions have predetermined difficulty levels of access of accessing the inside of the housing from the access portions respectively. At least one or more of the plurality of components housed in the inside of the housing are arranged based on positions and the predetermined difficulty levels of access of the access portions and a frequency of access to the at least one or more of the plurality of components by the user and the service man.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: September 11, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Kazuyuki Aoki
  • Patent number: 10071829
    Abstract: There are provided: a paper folding unit folding and sending a content sheet to a transfer path; an inserter unit sending an insert sheet to the transfer path; an acquiring unit acquiring information on a top/bottom direction and a surface/obverse direction of the content sheet and insert sheet; a merging unit in which the content sheet folded by the paper folding unit is overlapped with the insert sheet; and an enclosing unit enclosing the merged content sheet and insert sheet into an envelope sheet, in which, when the content sheet and insert sheet merge and are overlapped, the content sheet is folded so that the top/bottom direction and the surface/obverse direction of an image of the content sheet match those of an image of the insert sheet, based on the information acquired by the acquiring unit.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: September 11, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Kouichiro Iida