Title:
レーザー印字用シート
Document Type and Number:
Japanese Patent JP6819477
Kind Code:
B2
Abstract:
To provide a sheet for laser printing, being a sheet that allows printing by irradiation of a laser beam, the sheet capable of surely removing a coloring ink layer by irradiation of the laser beam, while free from deterioration of a paper substrate.SOLUTION: A sheet for laser printing is structured by laminating, on a printing area of a base material sheet 1 including pulp as a material, an undercoat layer 2, a top coat layer 3, and a coloring ink layer 4 in this order. Both of the undercoat layer and the top coat layer include kaolin and calcium carbonate. If a ratio of the kaolin is Rka with regard to a total amount of the kaolin and the calcium carbonate and an Rka of the undercoat layer is 60 mass% or more, while an Rka of the top coat layer is 50 mass% or more.SELECTED DRAWING: Figure 1
Inventors:
Maeda Takuma
Akira Yoshito
Takeshi Sato
Akira Sakai
Akira Yoshito
Takeshi Sato
Akira Sakai
Application Number:
JP2017120519A
Publication Date:
January 27, 2021
Filing Date:
June 20, 2017
Export Citation:
Assignee:
Toppan Printing Co., Ltd.
International Classes:
B41M5/26; B32B29/06; D21H19/40; D21H19/82
Domestic Patent References:
| JP8114893A | ||||
| JP2011235462A | ||||
| JP11100796A | ||||
| JP2001512535A |
Foreign References:
| CN103397564A |