Compensation for Scraped Portion of Resistive Ribbon Used in Printer or Typewriter
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
To maintain the same quality print when using a scraped portion of a resistive ribbon for printing in a printer or typewriter, current is increased when using the scraped portion of the resistive ribbon for printing. When printing with a resistive ribbon, a thermal printhead has electrodes heating material of the ribbon for transfer to a sheet of paper. The printhead is mounted on a carrier with the carrier moving in one direction and the ribbon being fed in the opposite direction past the printhead. After the ribbon passes the electrodes, the ribbon is scraped by the printhead, but this scraping does not affect the quality of print since printing has occurred before scraping.