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Temperature Compensation for Resistive Ribbon Printing

IP.com Disclosure Number: IPCOM000044468D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Bingham, RE: AUTHOR

Abstract

In correcting errors in resistive ribbon printing, the distance from print point to peel point of the resistive ribbon is increased as the temperature rises and reduced as the temperature decreases. A distance D between where a thermal print head 1 causes a resistive ribbon to engage a sheet 2 of paper on a platen 3 and where a roller 4 engages the resistive ribbon is varied in accordance with the temperature. The roller 4 is mounted on a presser foot 5, which is pivotally mounted on a bracket 6 by a pivot pin 7. The bracket 6 is pivotally mounted on a carrier by a pivot pin 8. A bimetallic strip 9, which has one end attached to the bracket 6 and its other end fixed to the carrier, expands when the temperature increases to shift the pivot pin 7 to the left to increase the distance D.

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Temperature Compensation for Resistive Ribbon Printing

In correcting errors in resistive ribbon printing, the distance from print point to peel point of the resistive ribbon is increased as the temperature rises and reduced as the temperature decreases. A distance D between where a thermal print head 1 causes a resistive ribbon to engage a sheet 2 of paper on a platen 3 and where a roller 4 engages the resistive ribbon is varied in accordance with the temperature. The roller 4 is mounted on a presser foot 5, which is pivotally mounted on a bracket 6 by a pivot pin 7. The bracket 6 is pivotally mounted on a carrier by a pivot pin 8. A bimetallic strip 9, which has one end attached to the bracket 6 and its other end fixed to the carrier, expands when the temperature increases to shift the pivot pin 7 to the left to increase the distance D. When the temperature decreases, the bimetallic strip 9 contracts to pull the bracket 6 clockwise about the pivot pin 8 so that the pivot pin 7 moves to the right to decrease the distance D.

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