Systems, methods and articles related to machine-readable indicia and symbols
First Claim
1. A printer, comprising:
- a number of media receptacles to respectively receive respective ones of a number of consumable marking media, each of the marking media having at least one respective spectral distinguishing characteristic, the at least one spectral distinguishing characteristic of each one of the marking media different from the at least one spectral distinguishing characteristic of the other ones of the marking media;
at least one printhead operable to selectively form one or more marks with the marking media on a substrate media; and
a control subsystem which, for each of a number of pieces of information, selects from the number of marking media available in the printer based on the respective piece of information to be represented and controls the at least one printhead to form the marks on the substrate media with the marking media selected for the respective one of the pieces of information, at least one of the marks including a combination of at least two of the marking media which are not spatially separably distinguishable from one another by an unaided human.
3 Assignments
0 Petitions
Accused Products
Abstract
A system employs combinations of marking media, each with respective distinguishing spectral characteristics to encode human comprehensible information in, and read human comprehensible information from, machine-readable indicia or symbols. Machine-readable indicia may be a single dot encoding information only in the combinations. Machine-readable symbols may be linear or two dimensional, spatially encoding information in the combinations, as well as spatially. A symbology may map at least the combinations to human-readable symbols or characters. A printer may form indicia or symbols with combinations of marking media. A reader may read indicia or symbols and decode information from at least the combinations of marking media. Different combinations may be visually homogenous, for example gray.
198 Citations
50 Claims
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1. A printer, comprising:
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a number of media receptacles to respectively receive respective ones of a number of consumable marking media, each of the marking media having at least one respective spectral distinguishing characteristic, the at least one spectral distinguishing characteristic of each one of the marking media different from the at least one spectral distinguishing characteristic of the other ones of the marking media; at least one printhead operable to selectively form one or more marks with the marking media on a substrate media; and a control subsystem which, for each of a number of pieces of information, selects from the number of marking media available in the printer based on the respective piece of information to be represented and controls the at least one printhead to form the marks on the substrate media with the marking media selected for the respective one of the pieces of information, at least one of the marks including a combination of at least two of the marking media which are not spatially separably distinguishable from one another by an unaided human. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of operating a printer, comprising:
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for each of a number of pieces of information to be represented on one or more substrate media, selecting from a number of consumable marking media available in the printer based on the respective piece of information to be represented, each of the marking media having at least one respective spectral distinguishing characteristic, the at least one spectral distinguishing characteristic of each one of the marking media different from the at least one spectral distinguishing characteristic of the other ones of the marking media; and for each of a number of pieces of information to be represented on one or more substrate media, forming a mark on the substrate media with the marking media selected for the respective one of the pieces of information, at least one of the marks including a combination of at least two of the marking media which are not spatially separably distinguishable from one another by an unaided human. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A printer, comprising:
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a number of media receptacles to respectively receive respective ones of a number of consumable marking media, each of the marking media having at least one respective spectral distinguishing characteristic, the at least one spectral distinguishing characteristic of each one of the marking media different from the at least one spectral distinguishing characteristic of the other ones of the marking media; at least one combining chamber in which the selected marking media are combined; at least one printhead operable to selectively form one or more marks with the combined marking media on a substrate media; and a control subsystem which, for each of a number of pieces of information, selects from the number of marking media available in the printer based on the respective piece of information to be represented and controls the at least one printhead to form the marks on the substrate media with the combined marking media selected for the respective one of the pieces of information, at least one of the marks including a combination of at least two of the marking media which are not spatially separably distinguishable from one another by an unaided human. - View Dependent Claims (17, 18, 19)
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20. A method of operating a printer, comprising:
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for each of a number of pieces of information to be represented on one or more substrate media, selecting from a number of consumable marking media available in the printer based on the respective piece of information to be represented, each of the marking media having at least one respective spectral distinguishing characteristic, the at least one spectral distinguishing characteristic of each one of the marking media different from the at least one spectral distinguishing characteristic of the other ones of the marking media; for at least one of the pieces of information, combining a combination of at least two of the marking media selected for the respective one of the pieces of information; and for each of a number of pieces of information to be represented on one or more substrate media, forming a mark on the substrate media with the marking media selected for the respective one of the pieces of information. - View Dependent Claims (21, 22, 23)
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24. A printer, comprising:
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a number of media receptacles to respectively receive respective ones of a number of consumable marking media, each of the marking media having at least one respective spectral distinguishing characteristic, the at least one spectral distinguishing characteristic of each one of the marking media different from the at least one spectral distinguishing characteristic of the other ones of the marking media; at least one printhead operable to selectively form one or more marks with the marking media on a substrate media; and a control subsystem which, for each of a number of pieces of information to be represented on one or more substrate media, selects from the consumable marking media available in the printer based on the respective piece of information to be represented, and selects from the number of consumable marking media available in the printer at least one additional marking media that in combination with the other selected marking media for the respective mark renders the respective mark effectively not visually discernable from other ones of the marks by an unaided human observer. - View Dependent Claims (25, 26, 27, 28)
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29. A method of operating a printer, comprising:
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for each of a number of pieces of information to be represented on one or more substrate media, selecting from a number of consumable marking media available in the printer based on the respective piece of information to be represented, each of the marking media having at least one respective spectral distinguishing characteristic, the at least one spectral distinguishing characteristic of each one of the marking media different from the at least one spectral distinguishing characteristic of the other ones of the marking media; for each of at least some of the number of pieces of information to be represented on one or more substrate media, selecting from the number of consumable marking media available in the printer at least one additional marking media that in combination with the other selected marking media for the respective mark renders the respective mark effectively not visually discernable from other ones of the marks by an unaided human observer. - View Dependent Claims (30, 31, 32, 33)
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34. A printer, comprising:
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at least one printhead operable to selectively form one or more marks with the marking media on a substrate media; and a control subsystem which causes the at least one printhead to form a first symbol character of a symbol at a first region of a piece of substrate media; and
at least a second symbol character of the symbol at a second region of the piece of substrate media, the second region spatially distinct from the first region, wherein the second symbol character at the second region is effectively humanly visually indiscernible in color from the first symbol character at the first region. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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43. A method of operating a printer to form symbols which encode information, comprising:
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forming a first symbol character of a symbol at a first region of a piece of substrate media; and forming at least a second symbol character of the symbol at a second region of the piece of substrate media, the second region spatially distinct from the first region, wherein the second symbol character at the second region is effectively humanly visually indiscernible in color from the first symbol character at the first region. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50)
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Specification