Anti-counterfeit latent image formation object for bills, credit cards, etc. and method for making the same

• US 5,437,897 A
• Filed: 05/18/1993
• Issued: 08/01/1995
• Est. Priority Date: 06/04/1992
• Status: Expired due to Term

• Current Assignee: National Printing Bureau Incorporated Administrative Agency Japan
• Original Assignee: Director General Printing Bureau Ministry of Finance
• Inventors: Tanaka, Toshinori, Nishiyama, Satoru, Koyama, Masaharu
• Primary Examiner(s): Ryan, Patrick J.
• Assistant Examiner(s): LAM, CATHY FONG FONG
• Application Number:
  US08/062,796
• Time in Patent Office: 805 Days
• Field of Search: 428/195, 428/915, 428/916, 428/29, 428/30
• US Class Current: 428/29
• CPC Class Codes: B41M 3/14 Security printing securities B42D25/29
• CPC Class Codes: B42D 2033/24 Reliefs or indentations
• CPC Class Codes: B42D 2035/16 Bars or lines
• CPC Class Codes: B42D 25/21 for multiple purposes
• CPC Class Codes: B42D 25/29 Securities; Bank notes
• CPC Class Codes: B42D 25/324 Reliefs
• CPC Class Codes: B42D 25/333 Watermarks
• CPC Class Codes: B42D 25/342 Moiré effects
• CPC Class Codes: G03C 5/08 Photoprinting G03C5/18 takes precedence; Processes and means for preventing photoprinting
• CPC Class Codes: Y10S 428/915 Fraud or tamper detecting
• CPC Class Codes: Y10S 428/916 Fraud or tamper detecting
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Abstract

An anti-counterfeit latent image formation object for bills, bank notes, urity papers, credit cards, passports, valuable printing matters, and the like comprising a main body, a plurality projections and recesses means formed on the main body in such a manner as to exhibit various kinds of patterns, in which the various kinds of patterns comprise straight image lines forming a pattern, a relief pattern, or a combination of the pattern and the relief pattern; a plurality of straight lines printed on an upper surface of the projections and recesses at predetermined spaces, the straight lines being printed in different colors from that of the main body itself. The patterns consisting of letters, figures, etc. can be visually recognized only when the anti-counterfeit latent image formation object is viewed from an adequate angle. A method for making the anti-counterfeit latent image formation object is also disclosed.

Claims

1. A latent image formation object for printed matter comprising:

a main body;

projections or recesses formed on said main body in such a manner as to exhibit various kinds of patterns, in which said various kinds of patterns comprise straight image lines forming a pattern, a relief pattern or a combination of said pattern and said relief pattern; and

a plurality of straight lines printed on at least one surface of said main body at predetermined spaces, said straight lines being printed in colors different from that of said main body itself, wherein the relative positional relationship between said projections or recesses is non-uniform.

3. A latent image formation object as claimed in claim 1, in which said body is formed of paper, metal, synthetic resin, or watermarked paper.

4. A latent image formation object as claimed in claim 1, in which said straight lines arranged at predetermined spaces comprise their halftone dots, or a combination of said straight lines and said their halftone dots.

7. A latent image formation object as claimed in claim 1, wherein said printed matter comprises at least one of bills, bank notes, security papers, credit cards, passports, and valuable printing matters.

9. A latent image formation object as claimed in claim 1, wherein the combination of said relative positional relationship between said projections or recesses, and said evenly spaced straight lines printed on the main body comprises a pattern, a relief pattern or a combination of said pattern and said relief pattern which cannot be seen when viewed at a viewing direction perpendicular to said main body, having one tone when viewed in one direction off of said perpendicular viewing direction, and having an opposite tone when viewed in a direction opposite said one direction from said perpendicular viewing direction.

11. A latent image formation object as claimed in claim 1, wherein said straight lines are evenly spaced.

2. A latent image formation object for printed matter comprising:

a main body;

projections or recesses formed on said main body in such a manner as to exhibit various kinds of patterns, in which said various kinds of patterns comprise wavy image lines forming a wavy pattern, a wavy relief pattern, or a combination of said wavy pattern and said wavy relief pattern; and

a plurality of wavy lines printed on at least one surface of said main body at predetermined spaces, said wavy lines being printed in different colors from that of said main body itself, wherein the relative positional relationship between said projections or recesses is non-uniform.

5. A latent image formation object as claimed in claim 2, in which said body is formed of paper, metal, synthetic resin, or watermarked paper.

6. A latent image formation object as claimed in claim 2, in which said wavy lines arranged at predetermined spaced comprise their halftone dots, or a combination of said wavy lines and said their halftone dots.

8. A latent image formation object as claimed in claim 2, wherein said printed matter comprises at least one of bills, bank notes, security papers, credit cards, passports, and valuable printing matters.

10. A latent image formation object as claimed in claim 2, wherein the combination of said relative positional relationship between said projections or recesses and said wavy lines printed on the main body comprises a wavy pattern, a wavy relief pattern or a combination of said wavy pattern and said wavy relief pattern which cannot be seen when viewed at a viewing direction perpendicular to said main body, having one tone when viewed in one direction off a viewing direction to said main body and having an opposite tone when viewed in a direction opposite said one direction from said perpendicular viewing direction.

12. A latent image formation object as claimed in claim 2, wherein said wavy lines are evenly spaced.