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Full-Roll Secure Journal Take-Up Mechanism

IP.com Disclosure Number: IPCOM000041373D
Original Publication Date: 1984-Jan-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Harris, RH: AUTHOR

Abstract

For point-of-sale terminals or electronic cash registers and the like, a paper journal roll tape is normally printed with a chronological log of all transactions. The journal is required for security to detect pilferage from the cash drawer and as a data base for reconstructing transactions, etc. The simplest journal forms feed systems utilize a driven take-up spool that continually draws a form from a supply roll. If a full roll take-up is required, the increasing take-up roll diameter increases the spacing between journal entries if the motor is incremented by the same amount each time. Also, the take-up roll becomes spongy if it is large, and this creates additional variation in line spacing and may result in over-printed lines.

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Full-Roll Secure Journal Take-Up Mechanism

For point-of-sale terminals or electronic cash registers and the like, a paper journal roll tape is normally printed with a chronological log of all transactions. The journal is required for security to detect pilferage from the cash drawer and as a data base for reconstructing transactions, etc. The simplest journal forms feed systems utilize a driven take-up spool that continually draws a form from a supply roll. If a full roll take-up is required, the increasing take-up roll diameter increases the spacing between journal entries if the motor is incremented by the same amount each time. Also, the take-up roll becomes spongy if it is large, and this creates additional variation in line spacing and may result in over-printed lines. The figure illustrates a system that allows a full take-up roll capability without compromising line space accuracy. In the figure, the paper tape 1 is supplied from a supply roll 2 journaled in suitable bearings (not shown). The supply roll is free running and is drawn across a platen 5 in the vicinity of print line 4 by the take-up spool 3 which is driven by some means (not shown). A take-up motor can drive spool 3 either in steps or continuously, as desired. In many prior systems, the resulting print line spacing is allowed to vary from fairly close together, when the take-up spool diameter is small, to fairly widely spaced, when the take-up spool diameter is large. In the present instance, a full roll take- up with uniform line spacing is achieved by utilizing an emitter grid wheel 8 and LED (light-emitting diode)-photo-sensor combination 9 for sensing the apertures in the grid wheel 8. Pressure rolls 6 are driven by the passage of the paper tape 1 to turn the grid wheel 8. The n...