Title:
真偽判別可能な印刷物
Document Type and Number:
Japanese Patent JP6781988
Kind Code:
B2
Abstract:
To provide an authenticity determinable printed matter that alleviates printing displacement that is one of influences on a latent image due to a gap or overlapping during alignment due to printing.SOLUTION: In a gradation image having a first pattern and a second pattern arranged in the surrounding of the first pattern, any one thereof is formed with an ink having functionality, the first pattern has a latent image region and a first profile region, the second pattern has a background region and a second profile region, the latent image region does not overlap with the background region, the first profile region and the second profile region are arranged at the same position to form a profile region, the first profile region causes a concentration change such that a concentration becomes gradually lower or higher from the latent image region toward the background region, the second profile region causes a concentration change such that the concentration becomes gradually lower or higher from the background region toward the latent image region, the latent image region and the profile region adjacent with the latent image region have the same concentration, and the background region and the profile region adjacent with the background region have the same concentration.SELECTED DRAWING: Figure 10
Inventors:
Kazuya Oshima
Kentaro Saito
Yoshinori Asai
Kentaro Saito
Yoshinori Asai
Application Number:
JP2017212399A
Publication Date:
November 11, 2020
Filing Date:
November 02, 2017
Export Citation:
Assignee:
National Printing Bureau
International Classes:
B41M3/14; B42D25/21; B42D25/30; B42D25/382; B42D25/387
Domestic Patent References:
| JP2012025092A | ||||
| JP2016002720A | ||||
| JP2003186377A | ||||
| JP2002279480A |
Foreign References:
| US20050279235 | ||||
| US20140225362 |