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Paper, process for producing same, and printed article

A physical, surface-area technique used in printing, print, paper, etc.

Inactive Publication Date: 2014-03-12
TOPPAN PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for such papers, there is room for improvement regarding the visibility (also called visibility or visibility) of the functional fibers
That is, there is room for further improvement of its anti-counterfeiting effect

Method used

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  • Paper, process for producing same, and printed article
  • Paper, process for producing same, and printed article
  • Paper, process for producing same, and printed article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same reference numerals are assigned to components that perform the same or similar functions, and overlapping descriptions are omitted.

[0018] figure 1 It is a plan view which schematically shows the paper which concerns on one aspect of this invention. figure 2 yes figure 1 A sectional view along line II-II of the paper shown.

[0019] The paper 1 includes a middle region 10 having a layer shape, and a pair of surface regions 20 provided on both main surfaces of the middle region 10 . This paper 1 contains cellulose fibers and functional fibers.

[0020] The cellulose fibers are distributed throughout the middle region 10 and the surface region 20 . In each of the central region 10 and the surface region 20 , the cellulose fibers are intertwined or partially overlapped. In addition, at the boundary between the middle r...

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PUM

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Abstract

Paper which exhibits more favorable forgery prevention effect is provided. Paper 1 contains first and second surface regions 20 opposed to each other and an intermediate region 10 interposed between the first and second surface regions 20. Each of the first and second surface regions 20 and the intermediate region 10 contains cellulose fibers. At least the first surface region further comprises functional fibers which, upon reception of a physical stimulus, make a response different from that made by the cellulose fibers to the physical stimulus. The functional fibers contained in the first surface region are mingled with the cellulose fibers in the first surface region and are oriented in one direction which is parallel or oblique to one main surface of the paper.

Description

technical field [0001] The present invention relates to paper, its production method and printed matter. Background technique [0002] Documents such as securities and certificates are expected to be difficult to forge. Therefore, it is desirable to apply some anti-counterfeiting techniques to the paper used for such documents. [0003] As an anti-counterfeiting technique applicable to paper, for example, a technique of mixing cellulose fibers such as pulp with functional fibers that are difficult to reproduce colors by copying is known. For example, International Publication No. 03 / 085177 describes paper in which optical interference fibers are dispersed and mixed in cellulose fibers. [0004] However, for such papers, there is room for improvement regarding the visibility (also called visibility or visibility) of the functional fibers. That is, there is room for further improvement of its anti-counterfeiting effect. Contents of the invention [0005] An object of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/48B42D25/30D21H27/00
CPCD21H21/48D21H27/00D21H15/00D21H27/30B42D2035/24B42D15/0093B42D25/29Y10T428/24934Y10T428/2933Y10T428/31993B42D25/30
Inventor 牛肠智村上彻山田顺子安井重成
Owner TOPPAN PRINTING CO LTD