Printing element homing device
AssigneeSmith Corona Corporation
InventorsHans W. Mueller, Kenneth D. Vought
Life of this patent
Estimating the term…
Abstract
The present invention includes means for maintaining a printing element in its home position without any accompanying noise and for thereafter moving the carrier to its left margin position after the power switch is turned on. A latch member controlled by an actuator engages a notch in a flange of a rotating printing element drive gear for establishing the home position of the printing element. When the latch member engages the flange, the printing element drive gear motor is deenergized, stopping rotation of the drive gear, and the noise which would otherwise be caused by the print element drive motor continuously trying to rotate against the latch member is eliminated.
Claims12
In an impact printing device including a carrier moveable along a print line direction during a printing operation, a printing element having a home position and mounted on the carrier for movement therewith, means including a motor for rotating the printing element to its home position, and an improved printing element homing device comprising:
- a. a switch for energizing the motor;
- and
- b. switch control means mounted on the carrier;
- c. means for moving said carrier and switch control means mounted thereon to a first predetermined position;
- d. said control means responsive to movement to the first predetermined position for closing the switch means for energizing the motor to move the printing element to its home position;
- e. means for moving said carrier and switch control means thereon to a second predetermined position;
- and
- f. said control means responsive to said movement of the switch control means to the second predetermined position for latching the printing element in its home position and deenergizing the motor.
Dependencies are inferred from the claim text.