Browse Prior Art Database

Apparatus for Recognizing Readable Information

IP.com Disclosure Number: IPCOM000059937D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Quinn, PA: AUTHOR [+2]

Abstract

A very convenient, low cost storage medium having long life, requiring little space, and not subject to power failure is provided by printing a sheet of paper with machine-readable information. A printhead 1 has adjacent electrodes (not shown) connected to a printhead driver 2 by conductors 3, 4, 5, 6, 7, and 8, for example. The number of the conductors is equal to the number of electrodes in the printhead 1, and the six conductors 3-8 are an example since the printhead 1 could include forty electrodes, for example. The printhead 1 causes printing on a sheet of paper through heating a thermal transfer ribbon by selectively energized electrodes to cause conductive ink to be placed on the sheet of paper to print thereon a desired character or other data, such as a bar code broken up into bits, for example.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 61% of the total text.

Page 1 of 2

Apparatus for Recognizing Readable Information

A very convenient, low cost storage medium having long life, requiring little space, and not subject to power failure is provided by printing a sheet of paper with machine-readable information. A printhead 1 has adjacent electrodes (not shown) connected to a printhead driver 2 by conductors 3, 4, 5, 6, 7, and 8, for example. The number of the conductors is equal to the number of electrodes in the printhead 1, and the six conductors 3-8 are an example since the printhead 1 could include forty electrodes, for example. The printhead 1 causes printing on a sheet of paper through heating a thermal transfer ribbon by selectively energized electrodes to cause conductive ink to be placed on the sheet of paper to print thereon a desired character or other data, such as a bar code broken up into bits, for example. When it is desired to read the information printed on the sheet of paper, the ribbon is removed from between the printhead 1 and the sheet of paper and a voltage is applied over each of the conductors 3, 5, and 7 to the alternate electrodes connected thereto and adjacent the electrodes connected to the conductors 4, 6, and 8. If there is conductive ink on the sheet of paper between the adjacent electrodes connected to the conductors 3 and 4, for example, this is sensed on the conductor 4. The conductors 4, 6, and 8 are connected by conductors 9, 10, and 11, respectively, through an FET inverter 12 to a NAND gate 14....