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Character Extension in Resistive Ribbon Transfer Technology

IP.com Disclosure Number: IPCOM000044473D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Croley, DF: AUTHOR [+3]

Abstract

In interactive printing, which is printing character by character through key activation, link-up is obtained between character boxes so that characters such as underscoring or accounting underscoring, for example, can be continuous from character box to character box when printing with a resistive ribbon from a thermal print head. To obtain continuous underscoring in interactive printing, the currents to the electrodes of the thermal print head stay on for two additional pels (printing elements) past the end of the character box. With a character box having a width of 36 pels for a 10 pitch character, the continuous conducting of the electrode currents for the two additional pels beyond the boundary of the character box enables overlapping between the two character boxes.

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Character Extension in Resistive Ribbon Transfer Technology

In interactive printing, which is printing character by character through key activation, link-up is obtained between character boxes so that characters such as underscoring or accounting underscoring, for example, can be continuous from character box to character box when printing with a resistive ribbon from a thermal print head. To obtain continuous underscoring in interactive printing, the currents to the electrodes of the thermal print head stay on for two additional pels (printing elements) past the end of the character box. With a character box having a width of 36 pels for a 10 pitch character, the continuous conducting of the electrode currents for the two additional pels beyond the boundary of the character box enables overlapping between the two character boxes. When printing a character, for example, an underscore or accounting underscore character, the software detects a control byte in the font, which compresses the information for formation of the characters, to cause extension after the end of character signal occurs. The control byte causes the currents to the electrodes to stay on for the two additional pels.

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