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Resistive Ribbon Energization Means Using Electroerosion Printhead

IP.com Disclosure Number: IPCOM000044650D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Goff, W: AUTHOR [+3]

Abstract

This article describes a system for selectively activating the elements of a nonimpact printer. A two-row array of electrodes is provided consisting of voltage source electrodes (V1, V2, V3, and V4) in individual rows in combination with return electrodes coupled to ground with switches (S1, S2, ..... Sn). A resistance printing ribbon electrically couples the voltage electrodes and the return electrodes. Voltage sources are connected to the source electrodes in groups of four with return electrodes between, as shown in the figure. Printing occurs by selectively energizing the source electrodes of the print head and closing switches to cause current to pass into the thermal resistive ribbon (not shown). Passing current through the thermally resistive ribbon causes localized heating.

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Resistive Ribbon Energization Means Using Electroerosion Printhead

This article describes a system for selectively activating the elements of a nonimpact printer. A two-row array of electrodes is provided consisting of voltage source electrodes (V1, V2, V3, and V4) in individual rows in combination with return electrodes coupled to ground with switches (S1, S2, ..... Sn). A
resistance printing ribbon electrically couples the voltage electrodes and the return electrodes. Voltage sources are connected to the source electrodes in groups of four with return electrodes between, as shown in the figure. Printing occurs by selectively energizing the source electrodes of the print head and closing switches to cause current to pass into the thermal resistive ribbon (not shown). Passing current through the thermally resistive ribbon causes localized heating. The local heating melts ink contained in the ribbon and thereby generates a mark on the paper in contact with the ribbon.

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