Patents Assigned to Riso Kagaku Corporation
  • Publication number: 20220227594
    Abstract: A paper supply device is equipped with a paper supply unit that sequentially supplies a plurality of print media, and a control unit that controls the paper supply unit. During sequential supply of a plurality of print media at a paper supply interval, in the case that it is necessary to secure a paper supply interval which is set in advance and is longer than the paper supply interval, a reference paper supply interval, based on a point in time which is a natural number multiple of the paper supply interval, and a post print process paper supply interval are compared. Print media are supplied at the post print process paper supply interval in the case that the post print process paper supply interval and the reference paper supply interval are different.
    Type: Application
    Filed: January 6, 2022
    Publication date: July 21, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Kyosuke WATARI, Ryo TERAKADO, Masashi HARA
  • Patent number: 11390085
    Abstract: A wiping device is equipped with a wiping blade that wipes an ink ejection surface of a nozzle row of an ink jet head, a cleansing tank that stores a cleansing solution and in which the wiping blade is immersed, and a shower unit that sprays the cleansing solution onto the wiping blade.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: July 19, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Katsuhiko Matsunaga, Ami Nakata, Hirotaka Yamamoto, Moon-Ho Lee
  • Publication number: 20220194723
    Abstract: A controller controls a floating unit and a conveyor to convey a sheet to a supply destination, and performs a following control of acquiring a detection value of a detector which detects an output signal acquired due to an input to a side of a sheet stack, during floating of sheets floated by the floating unit each time a sheet is conveyed by the conveyor and lifting a stacking tray upon the acquired detection value being less than a threshold value. The controller controls the floating unit and the conveyor to perform a feeding retry upon an occurrence of empty feeding in the conveyor, and determines the threshold value such that a target position for a height position of an upper surface of the sheet stack in the following control is a position where empty feeding is more likely to occur than multiple sheet feeding in the conveyor.
    Type: Application
    Filed: December 15, 2021
    Publication date: June 23, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Yuzuru IIOKA, Ryosuke MIYACHI
  • Publication number: 20220188045
    Abstract: An information processing apparatus including a controller configured to receive selection of a medium feeder corresponding to a page number from among a plurality of medium feeders that feed a medium; and to regard a page range of the page numbers that have been received as a cycle pattern and to repeatedly apply the cycle pattern to page numbers beyond the page range, to set, as the medium feeders corresponding the page numbers beyond the page range, the medium feeders corresponding to the page numbers in the cycle pattern.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 16, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Yasuhiro ESAKI
  • Publication number: 20220135355
    Abstract: A conveying apparatus includes a conveyor and a conveyed object receptor. The conveyor includes a conveyance surface facing downward and configured to convey a conveyed object having a sheet-like shape. The conveyed object receptor is arranged below the conveyor and configured to receive the conveyed object having fallen from the conveyor.
    Type: Application
    Filed: October 21, 2021
    Publication date: May 5, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Hiroki FUWA
  • Patent number: 11313807
    Abstract: An image inspection device has a first suction conveyance unit which is arranged on the upstream side with a conveyance surface as an upper surface, a second suction conveyance unit which is arranged on the downstream side with a conveyance surface as a lower surface to make the conveyance surface continuous from the upstream side, a first inspection section which inspects an image on a front surface of an inspection object which is conveyed to the first suction conveyance unit and a second inspection section which inspects an image on a back surface of the inspection object which is conveyed to the second suction conveyance unit. The inspection object is conveyed in a state of being sucked and held on the first and second suction conveyance units and therefore is stable in position and posture in conveyance and an expected accuracy is maintained in inspection performed by the first and second inspection sections.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: April 26, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Muneaki Kawai
  • Patent number: 11276018
    Abstract: A management server includes a printing-device management unit that receives consumables information indicating respective usage statuses of a plurality of consumables being used by a printing device from one or more printing devices, an order-timing estimating unit that calculates an estimated order timing at which each of the consumables is to be ordered based on a temporal variation in the usage statuses of each of the consumables, and a consumables-order planning unit that, when there are a plurality of estimated order timings within a predetermined period for one printing device, or when there are a plurality of estimated order timings within a predetermined period for a plurality of printing devices included in a certain neighboring area, changes and outputs a price of consumables associated with the estimated order timings corresponding to delivery statuses of the consumables.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: March 15, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Yukihiro Oi
  • Patent number: 11260651
    Abstract: A dust removal device for continuous paper improves operability and usability for a user. The continuous paper is continuously supplied in a rightward direction, then through guide rollers, the direction of the continuous paper is reversed leftward. A downward front surface of the continuous paper is cleaned with a first dust removal device. Further, a direction of the continuous paper is reversed with a guide roller rightward. A downward back surface of the continuous paper is cleaned with a second dust removal device, and is guided to the downstream side. The two dust removal devices are provided in a vertical positional relationship in space. Dust removed with a dust removing member falls to a dust receiving member and is stored in the dust receiving member. It is possible to easily dispose the dust by pulling out the dust removal device from a cleaning position to an outside detachment position.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: March 1, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Takuya Kambayashi
  • Patent number: 11261042
    Abstract: A medium feeding apparatus includes: a feed tray on which media M are placed; a draw-out unit that draws out an uppermost medium among the media placed on the feed tray; a hanging member that hangs the feed tray; and a load member that applies, when an amount of the media placed on the feed tray is equal to or smaller than a predetermined amount, a downward load to a portion of the feed tray located on an upstream side in a draw-out direction of the media.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: March 1, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Yoshihiro Noguchi
  • Patent number: 11254120
    Abstract: A hanging prevention roller is installed between a first suction conveyance unit on an upstream side and a second suction conveyance unit. When an inspection object is sent from the first suction conveyance unit into the second suction conveyance unit, a top edge of the inspection object abuts on and runs on the hanging prevention roller before the top edge of the inspection objects hangs down under its own weight or due to downward curling and so forth, the top edge is sandwiched between the roller and the second suction conveyance unit, and thereby stable suction conveyance is started without delay.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: February 22, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Muneaki Kawai
  • Patent number: 11242649
    Abstract: An ink set for textile printing is disclosed which includes a pretreatment liquid containing a metal salt, a water-dispersible resin (A), an organic solvent (B) having an SP value of 10 to 14 (cal/cm3)1/2 and water, and an ink containing a pigment, a water-dispersible resin (C) having a glass transition point of 10° C. or higher, an organic solvent (D) and water. A method for producing a printed textile item is also disclosed.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: February 8, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Yuki Urano, Takahisa Yamazaki, Hideki Imanishi, Shunsuke Uozumi
  • Patent number: 11235572
    Abstract: A medium ejection apparatus includes a placement mount on which media are placed, a restriction part that moves between a restriction position at which the restriction part restricts media ejected toward the placement mount and a retracted position retracted from the restriction position, and a processor that controls the restriction part by adjusting a restriction frequency on the basis of at least either an amount of movement of the restriction part from the retracted position to the restriction position or ejection intervals at which the media are ejected toward the placement mount, the restriction frequency being a frequency with which the restriction part performs a restriction operation for the media.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: February 1, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Hisayuki Takahashi
  • Publication number: 20220002101
    Abstract: A sheet feed device includes: a conveyor configured to convey a top sheet of sheets floated from a sheet stack; a blower configured to blow air in an obliquely upward direction from a position lower than the conveyor toward the sheet stack; and a direction converter configured to convert a direction of the air blown by the blower to a direction which is downward more than a direction of the air at a position where the air is blown from the blower and let the air flow in between the top sheet and a second sheet subsequent to the top sheet of the sheets floated from the sheet stack.
    Type: Application
    Filed: June 10, 2021
    Publication date: January 6, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Yoshihisa MORITA
  • Patent number: 11193033
    Abstract: An oil-based inkjet ink can be provided that prevents adhesion of the ink to the nozzle plate, thereby preventing ink misfires and discharge defects from the inkjet nozzles. The oil-based inkjet ink contains a pigment, a non-aqueous solvent, and a compound represented by general formula (1) shown below. (In general formula (1), m represents 1 or 2, each of R1 and R2 independently represents a monovalent saturated hydrocarbon group, R3 represents a single bond or a divalent saturated hydrocarbon group, and R4 represents a monovalent or divalent saturated hydrocarbon group.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: December 7, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Shinichiro Shimura, Toshihiro Endo, Kazuyuki Ando
  • Publication number: 20210371222
    Abstract: A medium feeding mechanism includes a feeder that feeds a medium, a transportation path that is coupled to the feeder and includes a bent portion, a transporter that transports the medium on the transportation path, and a transportation control unit that controls the transporter, wherein the transportation control unit adjusts a transportation velocity of the medium transported by the transporter on the basis of medium information of the medium and a transportation route shape for the medium.
    Type: Application
    Filed: May 17, 2021
    Publication date: December 2, 2021
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Ryosuke MIYACHI, Yuzuru IIOKA
  • Publication number: 20210357713
    Abstract: An image processing apparatus is equipped with: an image data receiving unit that receives image data; and a print data generating unit that generates multiple value data as print data by performing a halftone process on the image data and converting the image data into at least three values. The print data generating unit administers a halftone process that includes a density fluctuation suppressing process that results in the print data always including a zero value except for a case in which all of the pixels that constitute the image data are converted into a maximum value.
    Type: Application
    Filed: April 23, 2021
    Publication date: November 18, 2021
    Applicant: Riso Kagaku Corporation
    Inventors: Kenji SHIMOMURA, Masahiro KAWASHIMA
  • Patent number: 11174406
    Abstract: An ink is provided which can prevent the deformation and degradation of resin products by printed items, and is also suitable for inkjet printing. The oil-based inkjet ink contains a colorant and a fatty acid ester-based solvent represented by general formula (1) shown below and having 12 to 23 carbon atoms in one molecule. (In general formula (1), each of R1 and R2 independently represents an alkyl group, and at least one of the alkyl groups of R1 and R2 is a branched alkyl group having a side chain of at least 4 carbon atoms.).
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: November 16, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Hikaru Sugiura, Kazuyuki Ando, Shinsuke Ozawa
  • Patent number: 11173735
    Abstract: An image forming apparatus includes a conveyer belt that transports sheets, a platen plate that supports the conveyer belt to be slidable, a head holding unit that holds inkjet heads ejecting ink to sheets transported on the conveyer belt and being arrayed in a direction orthogonal to a transport direction of the conveyer belt, and a pair of gap adjustment units that have ends on one side being respectively attached to both ends of a lower surface of the head holding unit and ends on the other side being attached to an upper surface of the platen plate to adjust a gap between the lower surface of the head holding unit and the upper surface of the platen plate.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: November 16, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Hiroki Endo
  • Patent number: 11167557
    Abstract: An agitation device includes: a first container configured to house a liquid; a second container configured to house the liquid transferred from the first container; a transfer agitation unit configured to selectively execute a transfer operation of transferring the liquid from the first container to the second container and an agitation operation of agitating the liquid in the second container by using a common drive source; and a controller configured to control the transfer agitation unit to alternately execute the transfer operation and the agitation operation upon transferring the liquid from the first container to the second container.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: November 9, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Toshihiro Bansyo, Takehiro Yamori
  • Patent number: 11155110
    Abstract: An inkjet printer includes: a conveyer configured to convey a print medium; an inkjet head configured to eject ink to the print medium conveyed by the conveyer; a flow adjuster configured to adjust strength of an air flow in an under-head space which is a space between the inkjet head and the conveyer; and a controller configured to control the flow adjuster such that the smaller a satellite droplet generated from the ink ejected by the inkjet head is, the stronger the air flow in the under-head space is.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: October 26, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Kenji Shimomura, Hironao Adachi