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Colored Ribbon Cartridge Identifier for Reduced Printing Impact

IP.com Disclosure Number: IPCOM000044519D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06

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Related People

Humphreys, FR [+details]


A technique is described whereby an identifying sensor is incorporated in color ribbon cartridges of matrix printers. This sensor would cause printer controllers to reduce hammer firing force. In applications requiring dense printing, as in graphics printing, a high impact force is required by the hammers firing the print wires. This high energy force increases noise, heat generation and ribbon wear. By using an identifying sensor, such as a Hall-effect device to identify that a color ribbon cartridge is in use, a signal would be sent to the printer controller to reduce the force of the hammers firing the print wires. This could be done by reducing the duration of the firing pulse. The noise, heat generation and ribbon wear would be reduced.