EP0411602A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Object having visible pattern including invisible information printed thereon
Assignee: Omron Corp
•
Filing: 1990-08-01
•
Granted: —
•
Expires: 2010-08-01
Abstract
Abstract An object having a visible pattern including invisible information printed thereon and a method of reading visible information and invisible information from such an object. The object (4) has a bar code pattern (22) printed thereon. A region (6) having the bar code pattern (22) printed therein comprises a portion (10) printed in first ink (24) and a portion (8) printed in first ink (24) and second ink (26). The first ink has light absorption characteristics the same with respect to visible light and infrared light and the second ink has light absorption characteristics varying with respect thereto. By scanning the region (10) by the infrared light, visible information can be obtained and by scanning the region (8) by the infrared light, invisible information, that is, information included in the visible pattern can be obtained.
Inventors
- 👤 Hiroshi Fukamizu
- 👤 Mikihiko Shimura
- 👤 Masashi Takeuchi
- 👤 Izuru Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 05:26
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/08; G06K7/00; G06K7/10; G06K7/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
35 words
An object (4) having a pattern (2) visible to human eyes printed thereon, said print pattern (2) comprising information (54) perceivable by visible light and information (56) perceivable by other light than the visible light.
Claim 2
Dependent Claim
35 words
An object (4) having a pattern (2) visible to human eyes printed thereon, said print pattern (2) comprising information (54) perceivable by visible light and information (56) perceivable by other light than the visible light.
Claim 3
Dependent Claim
111 words
An object (4) having a pattern (2) visible to human eyes printed thereon according to claim 1, wherein said visible print pattern (2) being printed in a first coloring material (24) having light absorption characteristics the same with respect to visible light and light having wavelength other than that of the visible light and in a second coloring material (26) having the same color as that of said first coloring material and having light absorption characteristics varying with the visible light and light having wavelength other than that of the visible light, thereby representing information (54) perceivable by visible light and information (56) perceivable by other light than the visible light.
Claim 4
Dependent Claim
27 words
The object having the pattern visible to human eyes printed thereon according to claim 1 or 2, wherein said print pattern is a bar code pattern (22).
Claim 5
Dependent Claim
27 words
The object having the pattern visible to human eyes printed thereon according to claim 1 or 2, wherein said print pattern is a character pattern (60, 62).
Claim 6
Dependent Claim
35 words
The object having the visible print pattern printed thereon according to any of claims 2 to 5, wherein said first coloring material is a pigment material and said second coloring material is a dye material.
Claim 7
Dependent Claim
29 words
The object having the visible print pattern printed thereon according to any preceding claim, wherein said light having wavelength other than that of the visible light is infrared light.
Claim 8
Dependent Claim
72 words
An object (4) having a pattern (2) visible to human eyes printed thereon according to any preceding claim, said visible pattern comprising: - a portion (10) printed only in said first coloring material (24) and representing first information (54) perceivable by visible light, and - a portion (8) printed in said first and second coloring materials (24 and 26) and representing second information (56) perceivable by other light than the visible light.
Claim 9
Independent Claim
200 words
A method of reading information from an object (4) having a visible pattern (2) printed thereon, said visible pattern being printed in a first coloring material (24) having light absorption characteristics the same with respect to visible light and light having wavelength other than that of the visible light and a second coloring material (26) having the same color as that of said first coloring material and having light absorption characteristics varying with the visible light and the light having wavelength other than that of the visible light, said visible pattern (2) including a portion (10) printed only in said first coloring material and representing first information (54) perceivable by visible light and a portion (8) printed in said first and second coloring materials (24, 26) and representing second information (56) perceivable by other light than the visible light, said method comprising the steps of: - reading said first information (54) by scanning said portion (10) including said first information by the light having wavelength other than that of the visible light, and - reading said second information (56) by scanning said portion (8) including said second information by the light having wavelength other than that of the visible light.
Claim 10
Independent Claim
200 words
A method of reading information from an object (4) having a visible pattern (2) printed thereon, said visible pattern being printed in a first coloring material (24) having light absorption characteristics the same with respect to visible light and light having wavelength other than that of the visible light and a second coloring material (26) having the same color as that of said first coloring material and having light absorption characteristics varying with the visible light and the light having wavelength other than that of the visible light, said visible pattern (2) including a portion (10) printed only in said first coloring material and representing first information (54) perceivable by visible light and a portion (8) printed in said first and second coloring materials (24, 26) and representing second information (56) perceivable by other light than the visible light, said method comprising the steps of: - reading said first information (54) by scanning said portion (10) including said first information by the light having wavelength other than that of the visible light, and - reading said second information (56) by scanning said portion (8) including said second information by the light having wavelength other than that of the visible light.
Claim 11
Dependent Claim
24 words
The method of claim 8, wherein said light having a wavelength other than that of visible light is generated by a single light source.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.