Ribbon Feed Mechanism for a Resistive Ribbon Printer
Original Publication Date: 1988-Feb-01
Included in the Prior Art Database: 2005-Feb-14
A resistive ribbon cartridge is fixed to a printer frame while a printhead moves with a carrier between the limits of the cartridge. When the carrier moves in the print direction, the ribbon is fed at half the speed of the carrier whereas the ribbon is fed at the same speed during carrier return. This is accomplished through a belt drive roller driving both a supply spool and a take-up spool at the same speed but with the speeds being different when the direction of motion of the carrier changes. A different gear meshes with a gear driving the belt drive roller depending upon which direction that the carrier is driven to determine the feed rate of the ribbon from or to the supply spool. A resistive ribbon 1 (Fig.