Patents Assigned to Riso Kagaku Corporation
  • Patent number: 9751325
    Abstract: Using a plurality of colors of inks comprising an oil-based ink containing a dye lake pigment and an oil-based ink containing a pigment other than dye lake pigments, and superposing the plurality of colors of inks when printing, the oil-based ink containing a dye lake pigment is ejected on a printing medium prior to the oil-based ink containing a pigment other than dye lake pigments.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: September 5, 2017
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Kenji Shimomura, Hiroshi Hayashi
  • Patent number: 9751711
    Abstract: An aligning unit stores a paper bundle that is formed by inserting a medium that is different from printed body text paper sheets conveyed from a printer into the printed body text paper sheets. A manual paper feeding unit stores a medium that is manually fed. A conveyance control unit makes the medium be conveyed from the manual paper feeding unit to the aligning unit after the body text paper sheets that include a page specified by a print job are stored in the aligning unit and before the body text paper sheet conveyed from the printer immediately afterwards is stored in the aligning unit.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: September 5, 2017
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Hideaki Ogawa
  • Publication number: 20170249109
    Abstract: An image processing apparatus includes a processor and a memory including instructions. The instructions, when executed by a processor, cause the processor to perform operations including: receiving a print job data in a PDL format from an external apparatus; determining whether a Generator of the print job data satisfies a guarantee condition guaranteeing compatibility with the image processing apparatus; upon determining that the generator of the print job data does not satisfy the guarantee condition, executing a preflight processing of checking a syntax of the print job data and then developing the print job data subjected to the preflight processing into an image data; and upon determining that the generator of the print job data satisfies the guarantee condition, skipping the preflight processing and then developing the print job data not subjected to the preflight processing into an image data.
    Type: Application
    Filed: February 13, 2017
    Publication date: August 31, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Nobuya NAKATANI
  • Publication number: 20170249110
    Abstract: In a printing system, a print job data generating unit of an information processing device generates print job data that includes job settings data which includes at least one of mechanical initialization information and job registration information to be used in a printing machine and which is described in a format that can be parsed without performing RIP processing, and printing data in PDL format. An RIP preprocessing unit of the printing machine parses the job settings data included in the print job data to obtain at least one of the mechanical initialization information and the job registration information, and performs at least one of mechanical initialization requesting based on the mechanical initialization information and job registration based on the job registration information before an RIP processing unit performs the RIP processing.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 31, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Shigeru MASUDA
  • Publication number: 20170246873
    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: Application
    Filed: February 14, 2017
    Publication date: August 31, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Eijiro ARIMURA, Toshimasa HOSHINO
  • Publication number: 20170244861
    Abstract: An image processing apparatus includes an image processor that performs error diffusion processing by applying an error diffusion matrix to multi-valued image data having pixels two-dimensionally arranged, so as to convert the multi-valued image data into binary image data. The binarization unit applies an error diffusion matrix in which the diffusion coefficient of a pixel diagonal to a focused-on pixel is greater than those of other pixels.
    Type: Application
    Filed: February 20, 2017
    Publication date: August 24, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Daisuke FUJIWARA, Yukio YOSHIKAWA
  • Patent number: 9738470
    Abstract: A paper transfer includes a first paper guide plate, a second paper guide plate, and a draw-out guide member. The first paper guide plate has a transfer roller for transferring a paper while guiding one face of the paper. The second paper guide plate that can be drawn out while facing to the first paper guide plate, and has a driven roller driven while pressing the transfer roller with the paper interposed therebetween to guide another face of the paper. The draw-out guide member is formed so as to release a nip between the transfer roller and the driven roller by separating the driven roller from the transfer roller when the first paper guide plate is drawn out in an engaged state where the draw-out member is engaged with an engagement portion provided on the second paper guide plate.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: August 22, 2017
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Shinya Tagashira
  • Publication number: 20170232758
    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: Application
    Filed: February 7, 2017
    Publication date: August 17, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Hironori INAGAWA
  • Publication number: 20170225474
    Abstract: An ink cartridge contains an outer package, an ink container within the outer package, and sheet bodies attached to an outer surface of the outer package, and is attachable to and detachable from a printing device. Small pieces are formed by cuts in the outer package. The small pieces include breakable sections, and the bendable sections. Sheet bodies cover a portion of the small pieces. Pressing on a small piece with a finger breaks the breakable section, and bends the bendable section to press them inside the outer package. A portion of the sheet body then shifts upwards so that the sheet body can be grasped with fingers and peeled away from the outer package. Disassembly and sorting of used cartridges in this way becomes easier.
    Type: Application
    Filed: February 3, 2017
    Publication date: August 10, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Eijiro ARIMURA
  • Publication number: 20170217196
    Abstract: An engagement part fitted in an outer package of an ink cartridge is provided with: a fit-in rib which is provided at a circumferential edge on a rear side and which serves as a guide upon engagement with an opening of the outer package; an engagement rib provided upright at the circumferential edge of the engagement hole in the same direction as a direction of the fit-in rib; and a bonding region for bonding a communication tag that performs near field radio communication with a printer. A tag-removing hole which is formed in the bonding region and which is to be removed from a bonding surface side of the communication tag with a bar-like member inserted is formed in a formation region as the bonding region located in a first quadrant and a fourth quadrant in an orthogonal coordinate system.
    Type: Application
    Filed: January 27, 2017
    Publication date: August 3, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Shotaro KON, Kenichi OZEKI, Toshio HAMADA
  • Publication number: 20170217195
    Abstract: An ink cartridge includes: an ink container formed of a thermoplastic film material filled with predetermined ink; an outer package as an outer box in which the ink container is inserted; and an engagement part provided at one longitudinal end part of the ink container and engaging with a cartridge attaching mechanism of a printer. Inside an ink supply section provided at a longitudinal one end of the ink container, an inner plug is provided which closes or opens an opening of a supply opening, and a covering member protecting a shaft part of the inner plug is provided while constantly covering the shaft part regardless of sliding upon attachment and detachment of an ink cartridge.
    Type: Application
    Filed: January 24, 2017
    Publication date: August 3, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Eijiro ARIMURA
  • Publication number: 20170217706
    Abstract: A conveyance control device controls conveyance of a plurality of sheets including an image-formed sheet. The conveyance control device includes an obtaining unit configured to obtain display image data indicating a display image of each of the plurality of sheets; a region-specifying unit configured to specify common color regions having a common display color on the plurality of sheets based on the display image data; and a multiple feed detector configured to detect multiple feed of the sheets based on a light-receiving amount of light irradiated onto the common color regions; wherein the display image data indicating a display image of the image-formed sheet includes predetermined image data indicating a predetermined image to be previously formed and sheet image data indicating a sheet image displayed in a sheet color of the sheet.
    Type: Application
    Filed: January 12, 2017
    Publication date: August 3, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Hirokazu YABUNE
  • Publication number: 20170217159
    Abstract: A controller determines the amount of driving by a sub-scanning driver and the number of nozzles to be used in accordance with a maximum amplitude of vibration of an inkjet head in a sub-scanning direction, where the maximum amplitude is detected by a displacement detecting sensor when the inkjet head is moved in the sub-scanning direction before starting printing. Then, while moving the inkjet head in a main-scanning direction, the controller performs printing by selecting nozzles to be used in accordance with displacement of the inkjet head in the sub-scanning direction detected by the displacement detecting sensor.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 3, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Tadashi TAKAKUSA, Mamoru SAITO
  • Patent number: 9720634
    Abstract: A print control device is configured to perform operations including: determining whether to execute a preflight processing for checking a print job based on a print setting information and a condition information specifying a condition for executing the preflight processing; upon determining to execute the preflight processing, executing the preflight processing and then generating a print output information for printing an image on a print sheet based on a print job information; and upon determining not to execute the preflight processing, generating the print output information based on the print job information without executing the preflight processing.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 1, 2017
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Yukimoto Sakata, Shigeru Masuda
  • Patent number: 9723175
    Abstract: An image processing apparatus performs operations including: when a density value of a black component in uncorrected monochrome image data corresponding to each of pure colors including primary colors and secondary colors in color image data is lower than a reference density value, the uncorrected monochrome image data being obtained by a monochrome conversion from the color image data to monochrome image data, determining a correction content for correcting the density value of the black component in the uncorrected monochrome image data corresponding to at least each of the pure colors out of the pure colors and peripheral colors of the pure colors in a color space to a value equal to or higher than the reference density value; and obtaining corrected monochrome image data in which correction based on the determined correction content is reflected in the uncorrected monochrome image data.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: August 1, 2017
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Mitsuaki Ishitoya
  • Patent number: 9720629
    Abstract: High speed print output is enabled, while eliminating the burden of rearranging printed matter in page order placed on users. A plurality of pages of print job data are divided into groups of a predetermined number of pages, and the divided plurality of pages are assigned to the print job data to generate a plurality of pieces of divided print job data. The pieces of divided print job data are arranged in reverse order of page numbers, expansion processes are administered on the pieces of divided print job data in the order that they are arranged to generate page data for each page. The page data are output for each piece of divided print job data in reverse order of page numbers and in the order that the expansion processes are administered, to a printing section.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: August 1, 2017
    Assignee: Riso Kagaku Corporation
    Inventor: Akira Shibasaki
  • Patent number: 9707772
    Abstract: An inkjet printer includes: a positive pressure space for a positive pressure for circulating ink along a circulation path to be applied; a negative pressure space for a negative pressure for circulating the ink along the circulation path to be applied; a positive-pressure-side air opening valve configured to selectively open and close the positive pressure space to a positive-pressure-side air opening path; a negative-pressure-side air opening valve configured to selectively open and close the negative pressure space to a negative-pressure-side air opening path; and a control unit configured to, when terminating circulation of the ink in the circulation path, drive the positive-pressure-side air opening valve to open the positive pressure space to the positive-pressure-side air opening path and then drive the negative-pressure-side air opening valve to open the negative pressure space to the negative-pressure-side air opening path.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: July 18, 2017
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Akira Nishiyama
  • Patent number: 9710029
    Abstract: In a blast mechanism for optimizing an air blast in the main scanning direction and an air blast in the sub-scanning direction so as not to affect reading accuracy of an image, a first blast path for sending air in the main scanning direction and a second blast path for sending air in the sub-scanning direction are formed inside the housing, and collection efficiencies of air filters of the blast paths are set so that the efficiency in the main scanning direction is high than that in the sub-scanning direction. The blast mechanism includes a casing, first and second blast paths in the main and sub-scanning directions disposed in the casing, and air filters disposed in the respective blast paths. The dust collection efficiencies of the air filters are set so that the filter of the first blast path is higher than the filter of the second blast path.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 18, 2017
    Assignees: RISO KAGAKU CORPORATION, NISCA CORPORATION
    Inventor: Junya Ozawa
  • Publication number: 20170182810
    Abstract: A print system includes a first printer which performs printing on a sheet while conveying the sheet and a second printer which receives the sheet conveyed from the first printer and performs printing on the sheet while conveying the sheet. The second printer includes a second printing unit, a second registration roller, a second pre-registration roller, a sheet detector, and a second controller. The second controller controls an operation of the second pre-registration roller and an operation of the second registration roller based on a timing of a detection of the sheet by the sheet detector.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 29, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Hideaki INOUE, Hirokazu YABUNE
  • Publication number: 20170182796
    Abstract: A controller in a one-side printing mode moves movable rollers to form a one-side printing route and moves a second head unit so that the second head unit faces a front side of a web. The controller then controls a first head unit and a second head unit to print images of respective pages on the front side of the web while transferring the web at a transfer speed twice as fast as that in a both-side printing mode.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 29, 2017
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Tetsunori SAITO