摘要:
A U-shaped slip ring frictionally engages a boss on an escapement wheel to decelerate a freed carriage before it strikes a stopping abutment. The spring normally rotates with the escapement wheel. However, when the carriage is freed, the spring is held stationary and exerts a braking force on the escapement wheel.
摘要:
A carriage drive for a high speed dot matrix printer, including a reversible stepping motor connected through a clutch to a rotary driven member that is in turn connected by a belt to the printer carriage. The clutch remains engaged as long as the motor operates in a character-spacing direction, but reversal of the motor disengages the clutch and permits a torsion spring to drive the carriage back to a line start position. Near the end of the return movement, a flywheel decelerator absorbs the kinetic energy of the carriage and then utilizes that kinetic energy to prevent bouncing of the carriage.
摘要:
An apparatus for decelerating a typewriter carriage at the end of a tabulation or carriage return operation. A one-way spring clutch is operable to drive a centrifugal governor when conditioned by either a tabulation linkage or a carriage return linkage.
摘要:
Disclosed is a shuttle mechanism of a dot line printer including a printing shuttle unit making a reciprocating motion to perform dot printing and a balance shuttle unit making a motion in a direction opposite to the kinetic motion of the printing shuttle unit. This shuttle mechanism is constructed of a linear motor in which a movable unit for the reciprocating motion and a magnetic circuit are separated. With this construction, the movable unit can be decreased in weight. Therefore, the high-speed reciprocating motion can be made, and high-speed printing is thereby attainable. The balance shuttle unit is disposed under the printing shuttle unit. The apparatus can be thereby made compact.
摘要:
In a governor device for a printer including a driving wheel rotating for a predetermined amount by means of urging force by a urging spring to feed paper and engaging with a stopper to stop at this position and a governor gear train consisting of a speed-up gear engaged with the driving wheel and a fly wheel to perform the governing action. The governor device for a printer further includes a wind-up gear engaging with the driving wheel and a friction slip device attached to the fly wheel in the governor gear train to absorb the bounce when the driving wheel stops.