Control of Impact Force of an Impact Printer
Original Publication Date: 1988-Jun-01
Included in the Prior Art Database: 2005-Feb-15
The impact force of a missile hammer, which is a solenoid, for printing is controlled through precisely controlling the input energy to the solenoid. Precise control of the impact forces of an impact printer is necessary to maintain print quality. A missile hammer, which is a solenoid, converts electrical energy into mechanical energy to create the necessary impact force for printing. The energy generated by the hammer is a function of the input energy of the solenoid and the mechanical, electrical, and magnetic parameters of the solenoid. By precisely controlling the input energy to the solenoid, the impact force is controlled. The printer has eight different impact or energy levels available for utilization in printing. While each energy level has a unique current pulse width, each has the same current level.