公开(公告)号：US20210252880A1

公开(公告)日：2021-08-19

申请号：US17173424

申请日：2021-02-11

Applicant: KYOCERA Document Solutions Inc.

Inventor： Satoshi ISHII ,  Motoki SUZUKI ,  Hiroaki WATANABE ,  Ryota OKUI

IPC: B41J11/00

Abstract: An image forming apparatus includes a feeder, a conveyance section, an image forming section, a light emitter, a light receiver, a measuring section, and a permeation depth calculator. The feeder feeds a sheet. The conveyance section conveys the sheet. The image forming section forms an image on the sheet conveyed by the conveyance section using an ink. The light emitter emits near-infrared light to the sheet with the image thereon. The light receiver receives reflected light of the near-infrared light. The reflected light has been reflected by the sheet with the image thereon. The measuring section measures a received light quantity of the reflected light. The permeation depth calculator calculates a permeation depth of the ink permeating the sheet based on the received light quantity.

公开(公告)号：US20210252878A1

公开(公告)日：2021-08-19

申请号：US17174433

申请日：2021-02-12

Applicant: KYOCERA Document Solutions Inc.

Inventor： Satoshi ISHII ,  Motoki SUZUKI ,  Hiroaki WATANABE ,  Ryota OKUI

IPC: B41J11/00 ,  B41J2/045

Abstract: A first light emitter emits light toward a sheet. A first light receiver receives first reflected light from the sheet. A second light emitter is arranged downstream of the first light emitter in a conveyance direction of the sheet and emits light toward the sheet. A second light receiver receives second reflected light from the sheet. A measuring section measures first and second received light quantities of the first reflected light and the second reflected light. A moisture content calculator calculates a change in a moisture content of the ink in the sheet based on a difference between first and second moisture contents. The first moisture content is based on the first received light quantity and the second moisture content is based on the second received light quantity. A curling amount calculator calculates a curling amount of the sheet based on the change in the moisture content.

公开(公告)号：US20210016564A1

公开(公告)日：2021-01-21

申请号：US16931065

申请日：2020-07-16

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yoshihiro YAMAGISHI ,  Kanako MORIMOTO ,  Ryota OKUI ,  Satoshi ISHII

IPC: B41J2/045

Abstract: An image forming apparatus includes a recording head, a controller, a first detector, and a second detector. The controller calculates a viscosity of ink in each of nozzles based on a temperature, a humidity, and an elapsed time. The controller determines, among the nozzles, a nozzle in which the viscosity is equal to or higher than a threshold to be a high-viscosity nozzle. The controller acquires non-ejection information indicating an ejection disabled nozzle that is disabled to eject the ink. The controller acquires a viscosity of the ink in the ejection disabled nozzle. The controller calculates an average value of viscosities of the ink in the plurality of nozzles. The controller compares the viscosity of the ink in the ejection disabled nozzle with the average value of the viscosities of the ink in the nozzles. The controller determines whether or not to change a contribution value based on a comparison result.