METHOD OF INTERACTING WITH SUBSTRATE COMPRISING IR-ABSORBING CODING PATTERN

• US 20100194797A1
• Filed: 04/09/2010
• Published: 08/05/2010
• Est. Priority Date: 08/09/2004
• Status: Abandoned Application

• Current Assignee: BASF SE
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Hall, Lachlan Everett, Silverbrook, Kia, Indusegaram, Sutharsiny, Vonwiller, Simone Charlotte, Starling, Scott Matthew, Fielder, Simon, Lapstun, Paul, Ridley, Damon Donald
• Application Number:
  US12/757,038
• Publication Number:
  US 20100194797A1
• Time in Patent Office: Days
• US Class Current: 347/6
• CPC Class Codes: C09B 47/045 Special non-pigmentary uses, e.g. catalyst, photosensitisers of phthalocyanine dyes or pigments
• CPC Class Codes: C09B 47/0678 having-COOH or -SO3H radicals or derivatives thereof directly linked to the skeleton
• CPC Class Codes: C09B 47/24 Obtaining compounds having —COOH or —SO3H radicals, or derivatives thereof, directly bound to the phthalocyanine radical
• CPC Class Codes: C09B 67/0086 anionic dispersing agents
• CPC Class Codes: C09B 67/009 polymeric dispersing agent
• CPC Class Codes: C09D 11/32 characterised by colouring agents
• CPC Class Codes: C09D 11/328 characterised by dyes
• CPC Class Codes: G06F 3/03545 Pens or stylus

Abstract

A method of interacting with a printed substrate comprising a coding pattern printed with an IR-absorbing ink. The method comprises the steps of: operatively positioning an optically-imaging sensing device relative to the substrate and sensing part of the coding pattern; and generating interaction data using the sensed coding pattern. The IR-absorbing ink comprises a dye of formula (I):

wherein

• M is Ga(A¹);
• A¹ is an axial ligand selected from the group consisting of: OH and halogen;
• R¹ and R² may be the same or different and are selected from the group consisting of: hydrogen and C_1-12 alkoxy; and
• W is a sulfonic acid group or salts thereof.

Claims

1. A method of interacting with a printed substrate, said substrate comprising a coding pattern printed with an IR-absorbing ink, said method comprising the steps of:

operatively positioning an optically-imaging sensing device relative to the substrate and sensing at least part of the coding pattern; and

generating interaction data using the sensed coding pattern, wherein said IR-absorbing ink comprises a dye of formula (I);

wherein

M is Ga(A¹);

A¹ is an axial ligand selected from the group consisting of;

OH and halogen;

R¹ and R² may be the same or different and are selected from the group consisting of;

hydrogen and C_1-12 alkoxy; and

W is a sulfonic acid group or salts thereof.

2. The method of claim 1, wherein each W is a cationic nitrogen salt of a sulfonic acid group.

3. The method of claim 2, wherein:

each W is SO₃Z;

Z is N⁺(R^m)(Rⁿ)(R^s)(R^t); and

R^m, Rⁿ, R^s, R^t may be the same or different and are independently selected from the group consisting of;

H, C_1-8 alkyl, C_6-12 arylalkyl and C_6-12 aryl.

4. The method of claim 1, wherein R¹ and R² are both H.

5. The method of claim 1, wherein M is Ga(OH).

6. The method of claim 1, wherein the coding pattern identifies a substrate identity and said interaction data identifies said substrate identity.

7. The method of claim 1, wherein the coding pattern identifies a plurality of locations, and said interaction data identifies a position of the sensing device relative to the said substrate.

8. The method of claim 1, further comprising the step of:

communicating the interaction data to a computer system for interpretation.

9. The method of claim 8, further comprising the step of:

causing the computer system to perform a predetermined action upon receipt of said interaction data.

10. A system for interacting with a printed substrate, said system comprising:

a substrate comprising a coding pattern printed with an IR-absorbing ink; and

a sensing device for interacting with the substrate, said sensing device comprising an image sensor and a processor for generating interaction data using images captured by the image sensor,

wherein said IR-absorbing ink comprises a dye of formula (I);

wherein

M is Ga(A¹);

A¹ is an axial ligand selected from the group consisting of;

OH and halogen;

R¹ and R² may be the same or different and are selected from the group consisting of;

hydrogen and C_1-12 alkoxy; and

W is a sulfonic acid group or salts thereof.

11. The system of claim 10, wherein each W is a cationic nitrogen salt of a sulfonic acid group.

12. The system of claim 11, wherein:

each W is SO₃Z;

Z is N⁺(R^m)(Rⁿ)(R^s)(R^t); and

R^m, Rⁿ, R^s, R^t may be the same or different and are independently selected from the group consisting of;

H, C_1-8 alkyl, C_6-12 arylalkyl and C_6-12 aryl.

13. The system of claim 10, wherein R¹ and R² are both H.

14. The system of claim 10, wherein M is Ga(OH).

15. The system of claim 10, wherein the coding pattern identifies a substrate identity and said interaction data identifies said substrate identity.

16. The system of claim 10, wherein the coding pattern identifies a plurality of locations, and said interaction data identifies a position of the sensing device relative to the said substrate.

17. The system of claim 10, further comprising a computer system for interpreting the interaction data.