Resistive Ribbon Energization Means Using Flex Cable Printhead
Original Publication Date: 1985-Jan-01
Included in the Prior Art Database: 2005-Feb-18
The present device provides a system for energizing the elements of a nonimpact thermal printer using a row array of elements having voltage source lines (V1 and V2) interspersed with return lines (S1, S2, n). The elements and return lines are printed on a flexible ribbon which serves as the printhead. The printed circuitry is illustrated in the figure. A resistive heating element is formed by the bulk resistance in the thermal ribbon in area A between the voltage source line and the voltage return line. In this manner the heating element size is controlled by the geometrical relationship of lines 1 and 2. By selectively applying V1 and V2 and by selectively closing S1, S2 ... Sn a print pattern can be produced.