Drive mechanism for printer
AssigneesShinshu Seiki Kabushiki Kaisha, Kabushiki Kaisha Suwa Seikosha
InventorSeiji Hanaoka
Life of this patent
Estimating the term…
Abstract
A printer including a printing head adapted for reciprocal displacement across a printing tape for effecting printing on the tape in at least one direction of reciprocation is provided. The printer includes a lever pivoted on a frame and adapted to reciprocate the printing head and a rotating disc engaged with a motor for driving the rotary disc which pivots the lever. The rotating disc is adapted to actuate a paper advance assembly, an ink-ribbon winding assembly and an ink-ribbon reversing assembly. The printing head may be of the type including a plurality of needles for recording dots by electromagnetic actuation of the needles.
Claims42
A printer for printing characters on recording tape means by impacting printing means into an ink ribbon against the tape means comprising;
- a frame;
- disc means rotatably mounted to said frame;
- lever means pivotally mounted to said frame and operatively engaged with said disc means for reciprocatively pivoting said lever means in response to rotation of said disc means;
- printing means slideably mounted to said frame and engaged with said lever means for reciprocative displacement across the tape means in response to pivoting of said lever means for effecting printing in at least one direction of said displacement;
- tape feeding means mounted to said frame and cooperatively engaged with said disc means for incrementally feeding said tape means at least in part in response to rotating of said disc means;
- and
- ribbon winding means mounted to said frame and operatively coupled to said lever means for incrementally winding said ribbon means at least in part in response to pivoting of said lever means.
A printer for printing characters on recording tape means by impacting printing means into an ink ribbon against the tape means comprising:
- a frame;
- disc means having cam means thereon and rotatably mounted to said frame;
- lever means pivotally mounted to said frame and operatively engaged with said disc means for reciprocatively pivoting said lever means in response to rotation of said disc means;
- printing means slideably mounted to said frame and operatively engaged with said lever means for reciprocative displacement across the tape means in response to pivoting of said lever means for effecting printing in at least one direction of said displacement;
- tape feeding means including transmitting means pivotally mounted on said frame and engageable with said cam means for the pivotal displacement of said transmitting means between first and second positions spaced at different distances from the axis of rotation of said cam means, trigger means mounted to said frame for selectively retaining said transmitting means at its first position spaced for the greatest distance from the axis of said cam means and means for biasing said transmitting means toward its second position into engagement with said cam means when released by said trigger means, for at least in part actuating the incremental advancement of said tape feeding means;
- and
- ribbon winding means mounted to said frame and operatively coupled to said lever means for incrementally winding the ribbon at least in part in response to pivoting of said lever means.
A printer for printing characters on recording tape means by impacting printing means into an ink ribbon against the tape means comprising:
- a frame;
- disc means having cam means thereon and rotatably mounted to said frame;
- lever means pivotally mounted to said frame and operatively engaged with said disc means for reciprocatively pivoting said lever means in response to rotation of said disc means;
- printing means slideably mounted to said frame and operatively engaged with said lever means for reciprocative displacement across the tape means in response to pivoting of said lever means for effecting printing in at least one direction of said displacement, including a printing head, a plurality of printing needles aligned longitudinally in said printing head and electromagnet means mounted in said printing head for selectively activating said printing head in response to energizing said electromagnet means to displace said printing needles towards said tape means for effecting printing of characters during displacement of said printing head across the tape means;
- tape feeding means including transmitting means pivotally mounted on said frame and engageable with said cam means for the pivotable displacement of said transmitting means between first and second positions spaced at different distances from the axis of rotation of said cam means, trigger means mounted to said frame for selectively retaining said transmitting means at its first position spaced the greatest distance from the axis of said cam means and means for biasing said transmitting means toward its second position into engagement with said cam means when released by said trigger means, for at least in part actuating the incremental advancement of said tape feeding means;
- and
- ribbon winding means mounted to said frame and operatively coupled to said lever means for incrementally winding the ribbon at least in part in response to pivoting of said lever means.
Dependencies are inferred from the claim text.