Title:
FORGERY-PROOF PRINTED MATTER
Document Type and Number:
Japanese Patent JP3673971
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize forgery-proof printed matter with a latent image effect using a projecting drawing line of a specific shape.
SOLUTION: A plurality of projecting drawing lines (2) are divided into a background image part and a message image part and these parts (2) are constituted of a plurality of the projecting drawing lines (2) respectively. In addition, the lines (2) constituting the background image part and the message image part are such that the width (3) of the drawing line (2), in the width direction, of an ink transfer part located at the bottoms of the lines (2) of the background image part and the lines (2) of the message image part, is fixed and the width (3') of the drawing line in the width direction becomes narrower in proportion to the increasing height of an ink deposit in the height direction (5) of the lines (2), while the lines (2) in the longitudinal direction become wavy (6). The lines (2) which become wavy (6) of the background image part and the lines (2) which become wavy (6) of the message image part are constituted so that at least one of the period, amplitude, phase and the drawing line width, in the width direction of the projecting surface, of the lines (2) vary. Thus, the forgery-proof printed matter is obtained.
Inventors:
Tomokazu Kaneko
Application Number:
JP2002227352A
Publication Date:
July 20, 2005
Filing Date:
August 05, 2002
Export Citation:
Assignee:
National Printing Bureau
International Classes:
B42D15/10; B41M3/14; B44F1/12; (IPC1-7): B41M3/14; B42D15/10
Domestic Patent References:
| JP3053970A | ||||
| JP2000015919A |
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