Title:
PRINTED MATERIAL, METHOD FOR PRODUCING PRINTED MATERIAL AND PRINTING MEDIUM FOR LASER PRINTING
Document Type and Number:
WIPO Patent Application WO/2021/235556
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a printed material which comprises a printed region that is printed by means of ultraviolet laser, and which has excellent visibility; a method for producing a printed material by irradiation of ultraviolet laser; and a printing medium for laser printing, said printing medium being used for the printed material and for the method for producing a printed material. A printed material according to the present invention comprises a discolored printed region containing titanium oxide on at least a part of a sheet medium which is selected from among paper and a film, while having a printable region that contains titanium oxide; the titanium oxide is internally added to the sheet medium; in cases where the sheet medium is formed of paper, the content of titanium oxide in the printable region of the sheet medium is 1.0% by mass or more, the length weighted average fiber length and average fiber width of the pulp that constitutes the paper are within specific ranges, and the basis weight of the paper is 20 g/m2 or more; and in cases where the sheet medium is formed of a film, the content of titanium oxide in the printable region of the sheet medium is 0.3% by mass or more, the thickness of the film is 15 μm or more, resins that constitute the film include a specific resin, and the ratio between the Raman intensity associated with titanium oxide in the printed region and the Raman intensity associated with titanium oxide in non-printed regions is 0.70 or less.
Inventors:
SATO SO (JP)
KAWANAMI YUSEI (JP)
TAKAHASHI SATOSHI (JP)
BANZASHI GO (JP)
KAWANAMI YUSEI (JP)
TAKAHASHI SATOSHI (JP)
BANZASHI GO (JP)
Application Number:
PCT/JP2021/019477
Publication Date:
November 25, 2021
Filing Date:
May 21, 2021
Export Citation:
Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
B32B27/06; B31B50/88; B31D1/02; B32B7/023; B32B27/10; B32B27/20; B41M5/26; D21H17/67; D21H19/38; D21H27/30; G09F3/00; G09F3/02
Domestic Patent References:
| WO2019087694A1 | 2019-05-09 | |||
| WO2019187578A1 | 2019-10-03 |
Foreign References:
| JP2001512535A | 2001-08-21 | |||
| JPH11100796A | 1999-04-13 | |||
| JPH0792611A | 1995-04-07 | |||
| JP2009530507A | 2009-08-27 | |||
| JP2006076271A | 2006-03-23 | |||
| JP2012520905A | 2012-09-10 | |||
| JP2020075943A | 2020-05-21 | |||
| JP2019001945A | 2019-01-10 | |||
| JP2020001261A | 2020-01-09 | |||
| JP2013503065A | 2013-01-31 | |||
| JP2012057112A | 2012-03-22 | |||
| JPH0664637A | 1994-03-08 | |||
| JPH1120316A | 1999-01-26 | |||
| JP2019099923A | 2019-06-24 | |||
| JP2015096568A | 2015-05-21 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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