Patents Assigned to Riso Kagaku Corporation
  • Publication number: 20220288952
    Abstract: A printing system, including a first printing part, a second printing part that is disposed downstream of the first printing part in the conveying direction of a medium, and a conveyance mechanism that conveys the medium The conveyance mechanism includes a passage detection sensor, a conveyor roller, and a resist roller that is disposed downstream in the conveying direction from the passage detection sensor and the conveyor roller, that is butted by the medium, and that conveys the medium slackened due to the butting. The printing system further includes a controller configured to control the conveyor roller so that the slack amount of the subsequent medium is constant based on the conveyance status of the preceding medium and the detection time of the leading edge of the subsequent medium detected by the passage detection sensor.
    Type: Application
    Filed: March 2, 2022
    Publication date: September 15, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Akihiro YAMAGATA, Ryo TERAKADO, Hirokazu YABUNE
  • Publication number: 20220289507
    Abstract: A conveyance device includes a conveyance path having a curved portion and a pair of conveyers which are disposed in the conveyance path and convey a medium while nipping it, wherein the medium enters the pair of conveyers in a state of being at least partially curved in the curved portion, and the conveyance path guides the medium toward one of the pair of conveyers.
    Type: Application
    Filed: March 2, 2022
    Publication date: September 15, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Ryosuke MIYACHI, Yoshihisa MORITA
  • Patent number: 11433688
    Abstract: A desired image is printed in a non-contact state on a print object surface with a flyable printer in which a printing device is mounted in a flying object. The printer includes a flying object having a body part, a controller, and a drive part; and a print head, mounted in the flying object, to print a desired image in a non-contact state, on a print object which the flying object has approached. The print head is driven while a gap is maintained at a predetermined value by bringing a gap adjustment part attached to the body part of the flying object into contact with the print object or by accurate control of the drive part. It is possible to print a desired image in good image quality regardless of the state of the surface of the print object.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: September 6, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Ryo Ueno
  • Patent number: 11434093
    Abstract: An image inspection apparatus is capable of inspecting an image on a print sheet as an inspection object with high accuracy while conveying the print sheet from an upstream conveyance unit to a downstream conveyance unit. The image inspection apparatus inspects the print sheet conveyed at a first conveyance speed with a first conveyance unit of a printing device, with a first inspection unit, while conveying the print sheet at a second conveyance speed with a second conveyance unit of an inspection device. The first inspection unit is provided in a position downstream of an intermediate position between the first conveyance unit and the second conveyance unit by a length longer than a half of the length of the print sheet. Even when the first conveyance speed and the second conveyance speed are not substantially the same, no disorder occurs in the image read with the first inspection unit.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: September 6, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Muneaki Kawai
  • Publication number: 20220258999
    Abstract: A controller, upon occurrence of a sheet jam in a downstream conveyor, discharges a sheet in an upstream conveyor from a discharge port by controlling an operation of a switchback roller depending on an operation status of the switchback roller at a time of the occurrence of the sheet jam and then stops sheet conveyance by a conveyor.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 18, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Masashi HARA, Yoshifumi NOGUCHI, Yoshiyuki OKADA
  • Publication number: 20220258995
    Abstract: A sheet discharger includes: an accommodator configured to accommodate sheets; a conveyor configured to convey and discharge a sheet to the accommodator; a detector configured to detect whether a jam of a sheet has occurred in the accommodator and a state of the jam; and a controller configured to control the conveyor to continue sheet discharge upon detection by the detector of the jam in a state where sheet discharge of a jammed sheet is possible.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 18, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Masashi HARA, Yoshifumi NOGUCHI, Yoshiyuki OKADA
  • Patent number: 11414560
    Abstract: An oil-based inkjet ink containing a pigment, a pigment dispersant and a non-aqueous solvent, wherein the non-aqueous solvent contains a silicone oil and a fatty acid ester having 10 to 40 carbon atoms per molecule and having a ratio of (total number of atoms in side chains/total number of atoms in main chain) of at least 0.20.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: August 16, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Hikaru Sugiura
  • Publication number: 20220234853
    Abstract: A medium feeding mechanism includes: a feeder that feeds a medium; a transport path that is coupled to the feeder; a transporter that transports the medium through the transport path; a transport drive that drives the transporter; an entry detection sensor that detects when the medium fed from the feeder has entered the transport path; a take-in transporter that takes in the medium transported by the transporter; and a transport controller that controls the feeder and the take-in transporter, wherein when the entry detection sensor detects entry of the medium at a time that falls within a first range set in advance, the controller controls the take-in transporter so as to take in the medium, and when the entry detection sensor detects entry of the medium at a time that falls within a second range following the first range.
    Type: Application
    Filed: December 21, 2021
    Publication date: July 28, 2022
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Yuzuru IIOKA
  • Patent number: 11397881
    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: Grant
    Filed: April 23, 2021
    Date of Patent: July 26, 2022
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Kenji Shimomura, Masahiro Kawashima
  • 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: 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: 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: 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