Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
138 words
A process for marking articles for authentication, comprising the steps of: a) providing one or more predetermined fluorescent substances, b) providing a transparent non-fluorescent carrier medium in which said fluorescent substances are miscible, c) mixing said fluorescent substances in predetermined concentrations in said carrier medium, d) selecting indicia from a predetermined set of characters and graphic images readable by optical character recognition means and image comparison means respectively, and e) printing said selected indicia on said articles with said carrier medium containing said predetermined concentrations of said fluorescent substances, said selected indicia being printed in predetermined offset from registration with indicia previously printed on said article, and said predetermined offset being chosen such that said selected indicia and said previously printed indicia in combination form a stereogram when viewed from a standard near-point reading distance of 25 centimeters.
Claim 2
Dependent Claim
138 words
A process for marking articles for authentication, comprising the steps of: a) providing one or more predetermined fluorescent substances, b) providing a transparent non-fluorescent carrier medium in which said fluorescent substances are miscible, c) mixing said fluorescent substances in predetermined concentrations in said carrier medium, d) selecting indicia from a predetermined set of characters and graphic images readable by optical character recognition means and image comparison means respectively, and e) printing said selected indicia on said articles with said carrier medium containing said predetermined concentrations of said fluorescent substances, said selected indicia being printed in predetermined offset from registration with indicia previously printed on said article, and said predetermined offset being chosen such that said selected indicia and said previously printed indicia in combination form a stereogram when viewed from a standard near-point reading distance of 25 centimeters.
Claim 3
Dependent Claim
37 words
A process as in claim 1 wherein said providing steps (a) and (b) and said mixing step (c) produce an ink suitable for ink-jet printing, and said printing step (e) is performed by using an ink-jet printer.
Claim 4
Dependent Claim
38 words
A process as in claim 1 wherein said providing steps (a) and (b) and said mixing step (c) produce a toner substance suitable for laser printing, and said printing step (e) is performed by using a laser printer.
Claim 5
Dependent Claim
40 words
A process as in claim 1 wherein said providing steps (a) and (b) and said mixing step (c) produce an ink suitable for rubber stamping, and said printing step (e) is performed by using an ink pad and rubber stamp.
Claim 6
Dependent Claim
38 words
A process as in claim 1 wherein said providing steps (a) and (b) and said mixing step (c) produce a toner substance suitable for xerographic copying, and said printing step (e) is performed by using a xerographic copier.
Claim 7
Dependent Claim
38 words
A process as in claim 1 wherein said providing steps (a) and (b) and said mixing step (c) produce an ink suitable for offset lithography, and said printing step (e) is performed by using an offset printing press.
Claim 8
Dependent Claim
24 words
A process as in claim 1 wherein said predetermined set of characters and images includes a font of characters standardized for optical character recognition.
Claim 9
Dependent Claim
36 words
A process as in claim 1 wherein said predetermined set of characters and images includes a font selected from the list characterized by the standards identified as OCR-A, OCR-B, E-13B, OCR-A Eurobanking, OCR-B Eurobanking, and PostNET.
Claim 10
Dependent Claim
19 words
A process as in claim 1 wherein said indicia previously printed on said article are printed with non-fluorescent ink.
Claim 11
Dependent Claim
32 words
A process as in claim 1 wherein said selected indicia and said previously printed indicia each form incomplete images, and their combination forms a single image recognizable by said image comparison means.
Claim 12
Dependent Claim
97 words
A process as in claim 1 wherein said predetermined fluorescent substances are selected from a set consisting of: a) substances which fluoresce in the blue portion of the optical spectrum at about 465 nanometers wavelength, b) substances which fluoresce in the green portion of the optical spectrum at about 510 nanometers wavelength, c) substances which fluoresce in the yellow portion of the optical spectrum at about 530 nanometers wavelength, d) substances which fluoresce in the orange and red portion of the optical spectrum at about 600 to 680 nanometers wavelength, e) mixtures thereof, and f) combinations thereof.
Claim 13
Dependent Claim
93 words
A process as in claim 1 wherein said predetermined fluorescent substances are selected from a set consisting of: a) substances which fluoresce in the portion of the optical spectrum between 455 and 475 nanometers wavelength, b) substances which fluoresce in the portion of the optical spectrum between 500 and 520 nanometers wavelength, c) substances which fluoresce in the portion of the optical spectrum between 520 and 540 nanometers wavelength, d) substances which fluoresce in the portion of the optical spectrum between 580 and 680 nanometers wavelength, e) mixtures thereof, and f) combinations thereof.
Claim 14
Dependent Claim
15 words
A process as in claim 1 wherein said predetermined fluorescent substances consist of non-toxic substances.
Claim 15
Dependent Claim
26 words
A process as in claim 13 wherein said non-toxic substances comprise non-toxic substances containing metals, if any, of atomic number less than or equal to 20.
Claim 16
Dependent Claim
19 words
A process as in claim 1 wherein said predetermined fluorescent substances have fluorescence extinction times less than 10 milliseconds.
Claim 17
Dependent Claim
19 words
A process as in claim 15 wherein said predetermined fluorescent substances have fluorescence extinction times less than 1 millisecond.
Claim 18
Dependent Claim
19 words
A process as in claim 16 wherein said predetermined fluorescent substances have fluorescence extinction times less than 10 microseconds.