Title:
ULTRAVIOLET LASER PRINTING PAPER, PRINTED MATTER AND MANUFACTURING METHOD THEREFOR, PROCESSED OBJECT, AND INK COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/224038
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: an ultraviolet laser printing paper with which, when the paper is irradiated with ultraviolet laser light, printed spots having excellent printing definition at each point can be obtained; printed matter, and a manufacturing method therefor, obtained as a result of irradiating the ultraviolet laser printing paper with ultraviolet laser light so that the irradiated region changes color; and an ink composition used in the manufacturing of the ultraviolet laser printing paper. The present invention also addresses the problem of providing a processed object formed using the ultraviolet laser printing paper or the printed matter. This ultraviolet laser printing paper includes a printing layer which contains titanium oxide on a paper substrate. The content of titanium oxide in the printing layer is at least 0.1 g/m2. The size of titanium oxide crystallites in the printing layer is at least 30nm.
Inventors:
SATO SO (JP)
ISHIKAWA YUMI (JP)
MATSUSHITA AKIHIRO (JP)
HIRANO HIRONOBU (JP)
ISHIKAWA YUMI (JP)
MATSUSHITA AKIHIRO (JP)
HIRANO HIRONOBU (JP)
Application Number:
PCT/JP2023/018266
Publication Date:
November 23, 2023
Filing Date:
May 16, 2023
Export Citation:
Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
B41M5/26; B32B27/20; C01G23/047; C09D11/037
Foreign References:
| JP2022050447A | 2022-03-30 | |||
| JPH10237319A | 1998-09-08 | |||
| JPH06278380A | 1994-10-04 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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