Microprinting techniques for printing security symbols on a substrate

Patent metadata

Field	Value
Publication number	US-12083814-B2
Application number	US-202318232199-A
Country	US
Kind code	B2
Filing date	Aug 9, 2023
Priority date	Oct 12, 2021
Publication date	Sep 10, 2024
Grant date	Sep 10, 2024

Abstract

Examples are directed toward anticounterfeit markings printed on a substrate. A method includes determining with a microprocessor running computer executable code non-transitorily stored on tangible computer readable media that: a first microprinting appears on a front side of the substrate as front side markings of first portions of a plurality of characters having dimensions in a micrometer range when viewed from the front side with reflected light, a second microprinting appears on a back side of the substrate as back side markings of second portions of the plurality of characters having dimensions in the micrometer range when viewed from the back side with reflected light, and the first microprinting and the second microprinting in combination appear as microprinting of whole characters of the plurality of characters when viewed with transmitted light.

First claim

What is claimed is:

1. A method comprising:
receiving a front side image having a first information section and a first security section with a printsetter;
generating a first plate having a first microprinting formed in the first plate based on the first security section of the front side image;
receiving a back side image having a second information section and a second security section;
generating a second plate having a second microprinting formed in the second plate based on the second security section of the back side image;
printing on a front side of a substrate with an offset printing press;
applying ink in a first color to the substrate in a first printing unit of the offset printing press having the first plate;
aligning the substrate to print on a back side of the substrate;
applying ink in a second color the substrate in a second printing unit of the offset printing press having the second plate;
capturing a visual media file with a camera connected to the offset printing press of the front side of the substrate with reflected light, the back side of the substrate with reflected light, the front side of the substrate with transmitted light, and the back side of the substrate with transmitted light; and
determining with a microprocessor running computer executable code non-transitorily stored on tangible computer readable media that: the first microprinting appears on the front side of the substrate as front side markings of first portions of a plurality of characters having dimensions in a micrometer range when viewed from the front side with reflected light, the second microprinting appears on the back side of the substrate as back side markings of second portions of the plurality of characters having dimensions in the micrometer range when viewed from the back side with reflected light, and the first microprinting and the second microprinting in combination appear as microprinting of whole characters of the plurality of characters when viewed with transmitted light.

2. The method of claim 1 ,
wherein the first color is different from the second color.

3. The method of claim 1 ,
wherein the first color is same as the second color.

4. The method of claim 1 , further comprising:
generating a third plate having a first information printing formed in the third plate based on the first information section of the front side image;
generating a fourth plate having a second information printing formed in the fourth plate based on the second information section of the back side image;
applying ink to the front side of the substrate in a third printing unit of the offset printing press having the third plate;
aligning the substrate to print on the back side of the substrate; and
applying ink to the back side of the substrate in a fourth printing unit of the offset printing press having the fourth plate;
the front side image including additional front side markings which correspond to the first information printing and have dimensions at least one order of magnitude larger than the micrometer range; and
the back side image including additional back side markings which correspond to the second information printing and have dimensions at least one order of magnitude larger than the micrometer range.

5. The method of claim 1 , further comprising:
printing on the front side of the substrate with the offset printing press;
applying ink at a first saturation of color to the substrate in the first printing unit of the offset printing press having the first plate;
aligning the substrate to print on the back side of the substrate; and
applying ink at a second saturation of color to the substrate in the second printing unit of the offset printing press having the second plate.

6. The method of claim 1 , further comprising:
printing on the front side of the substrate with the offset printing press;
applying ink in the first color to the substrate in the first printing unit of the offset printing press having the first plate, at a first saturation over first sub-portions of the first portions of the plurality of characters corresponding to the first microprinting and over second sub-portions of the first portions of the plurality of characters corresponding to the first microprinting;
aligning the substrate to print on the back side of the substrate; and
applying ink in the second color to the substrate in the second printing unit of the offset printing press having the second plate, at a second saturation over third sub-portions of the second portions of the plurality of characters corresponding to the second microprinting and over fourth sub-portions of the second portions of the plurality of characters corresponding to the second microprinting.

7. The method of claim 1 ,
wherein the whole characters are alpha-numeric characters; and
wherein the whole characters and spacings between the whole characters have dimensions in a range of about 10 to 500 micrometers.

8. A method comprising:
receiving a front side image having a first information section and a first security section with a printsetter;
generating a first plate having a first microprinting formed in the first plate based on the first security section of the front side image;
receiving a back side image having a second information section and a second security section;
generating a second plate having a second microprinting formed in the second plate based on the second security section of the back side image;
generating a third plate having a first information printing formed in the third plate based on the first information section of the front side image, the front side image including additional front side markings which correspond to the first information printing and have dimensions at least one order of magnitude larger than a micrometer range;
generating a fourth plate having a second information printing formed in the fourth plate based on the second information section of the back side image, the back side image including additional back side markings which correspond to the second information printing and have dimensions at least one order of magnitude larger than the micrometer range;
printing on a front side of a substrate with an offset printing press;
applying ink in a first color to the substrate in a first printing unit of the offset printing press having the first plate;
applying ink to the front side of the substrate in a third printing unit of the offset printing press having the third plate;
aligning the substrate to print on a back side of the substrate;
applying ink in a second color the substrate in a second printing unit of the offset printing press having the second plate;
applying ink to the back side of the substrate in a fourth printing unit of the offset printing press having the fourth plate;
capturing a visual media file with a camera connected to the offset printing press of the front side of the substrate with reflected light, the back side of the substrate with reflected light, the front side of the substrate with transmitted light, and the back side of the substrate with transmitted light; and
determining with a microprocessor running computer executable code non-transitorily stored on tangible computer readable media that: the first microprinting appears on the front side of the substrate as front side markings of first portions of a plurality of characters having dimensions in the micrometer range and the first information appears as the additional front side markings having dimensions at least one order of magnitude larger than the micrometer range when viewed from the front side with reflected light, the second microprinting appears on the back side of the substrate as back side markings of second portions of t

Assignees

• The Government Of The Us Secretary Of Homeland Security
• The United Of America As Represented By The Secretary Of Homeland Security

Inventors

• Zlotnick Joel
• Brough Jordan
• Eberhardt Troy
• Mcconnell Tyra
• Gil Elizabeth
• Moran Traci

Classifications

• B42D25/309

  Photographs · CPC title

• B41F33/0036

  Devices for scanning or checking the printed matter for quality control · CPC title

• B42D25/351

  Translucent or partly translucent parts, e.g. windows · CPC title

• B41M1/10

  Intaglio printing {; Gravure printing} · CPC title

• B41F7/025

  Multicolour printing or perfecting on sheets or on one or more webs, in one printing unit · CPC title