Signature verifier with indicia sensor
First Claim
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1. A verifier for signatures of a book, each signature having a coded indicia thereon, comprising:
- means for repetitively sensing the indicia on one or more signatures;
means for comparing the sensed indicia with the coded indicia of a desired signature;
a counter responsive to said comparing means for totaling the sensed indicia errors; and
means responsive to repeated errors in the sensed indicia totaled by said counter to generate a warning signal.
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Abstract
Signatures of a book are identified with a binary coded indicia on the backbone. A signature verifier having a row of indicia sensors associated with the stack of signatures in the stream feeder of a gathering machine senses the coded indicia. In the event of an error, the verifier gives an alarm or stops the stream feeder. A book of plural signatures has a plurality of indicia on the backbone. A verifier has corresponding plural rows of sensors which detect the indicia and are sampled sequentially.
47 Citations
19 Claims
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1. A verifier for signatures of a book, each signature having a coded indicia thereon, comprising:
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means for repetitively sensing the indicia on one or more signatures; means for comparing the sensed indicia with the coded indicia of a desired signature; a counter responsive to said comparing means for totaling the sensed indicia errors; and means responsive to repeated errors in the sensed indicia totaled by said counter to generate a warning signal. - View Dependent Claims (2, 3)
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4. A verifier for a signature stream feeder in which signatures successively pass an inspection point, the signatures each having indicia thereon, comprising:
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means for sensing the indicia on each signature as the signatures pass said inspection point; means for comparing the sensed indicia with the desired signature indicia; and means responsive to the sensing of an erroneous indicia for stopping said stream feeder.
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5. A verifier for a signature stream feeder in a gathering machine, said stream feeder having means receiving a vertical stack of signatures, each signature having binary indicia in contrasting colors along the backbone thereof, the signatures being stacked with the backbones of each facing in the same direction, said verifier comprising:
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a plurality of photosensors in a row adjacent said signature stack receiving means and extending generally parallel with the signature backbone to sense the binary indicia of each signature as signatures are withdrawn from the bottom of the stack by the stream feeder and each signature successively passes the photosensors, the sensing area of the photosensors being greater than the extent of the identification code in the direction along the signature backbone and less than the extent of the identification code in the direction of stack movement; a photosensor scanner for sequentially scanning the outputs of each photosensor; a shift register for receiving the sequential outputs of the photosensors; means for detecting the completion of the scanning of the photosensors responding to a binary signature indicia; an indicia comparator; means responsive to said detecting means for simultaneously transferring the photosensor signal from the shift register to the comparator; and means responsive to detection of an indicia error by said comparator for generating a warning signal. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. An indicia translator for a coded indicia of binary elements with a start element which contrasts with its background, comprising:
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a plurality of sensors to sense said coded indicia elements simultaneously, there being more sensors than elements of the indicia; means for scanning said sensors sequentially, generating sequential signals representing said indicia elements; a shift register connected with said scanning means to receive said sequential signals; and means responsive to reception of the signal representing said indicia start element at the last stage of said shift register to indicate that the sensors responding to the indicia have all been scanned. - View Dependent Claims (15, 16, 17, 18)
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19. A verifier for a plurality of assembled signatures to be bound in a volume, each of the signatures having a coded indicia on the backbone thereof, comprising:
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a bank of sensors with a row of sensors for each of said signatures, for simultaneously sensing said indicia on the backbone of each of said signatures; means for sequentially scanning each of the sensors, row by row, generating sequential signals representing the indicia of each signature; means for comparing the indicia representing signals with the desired signature indicia; and means responsive to the occurrence of an erroneous indicia signal for generating a warning signal.
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Specification