Title:
CONVEYANCE DEVICE, LIQUID DROPLET EJECTION DEVICE, AND CONVEYANCE METHOD
Document Type and Number:
WIPO Patent Application WO/2023/068092
Kind Code:
A1
Abstract:
Provided is technology that makes it possible to detect, with high sensitivity, deformations such as wrinkles occurring on a continuous base material being conveyed. A printing device (1) comprises a plurality of conveyance rollers (12), a patterned light irradiation unit (30), a camera (40), and a height information acquisition unit (53). The patterned light irradiation unit (30) irradiates the surface of the continuous base material (9) conveyed by the plurality of conveyance rollers (12) with patterned light (31). The camera (40) captures a grid pattern (33) formed on the continuous base material (9) by irradiation with the patterned light (31). The height information acquisition unit (53) acquires height information corresponding to the height of the continuous base material (9) on the basis of locations of a plurality of intersections (35) of the grid pattern (33) in the image captured by the camera (40).
Inventors:
USUMOTO HIROAKI (JP)
Application Number:
PCT/JP2022/037715
Publication Date:
April 27, 2023
Filing Date:
October 07, 2022
Export Citation:
Assignee:
SCREEN HOLDINGS CO LTD (JP)
International Classes:
B65H26/02; B41J2/01
Foreign References:
| JP2010195558A | 2010-09-09 | |||
| JP2016121929A | 2016-07-07 | |||
| JP2013035616A | 2013-02-21 | |||
| JP2016098082A | 2016-05-30 |
Attorney, Agent or Firm:
NISHIDA Takami (JP)
Download PDF: