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US 5,842,792 AGranted
Dot-matrix line printer
AssigneeFujitsu Limited
InventorOsamu Shimizu
Life of this patent
Estimating the term…
Abstract
A dot-matrix line printer includes a printing shuttle which moves reciprocally to carry out a printing operation, and a balancing shuttle which moves in a direction opposite Lo the direction of the movement of the printing shuttle. The balancing shuttle is partly inserted in the printing shuttle so as not to interfere with the latter upon printing and so that the center of gravity of the balancing shuttle is located as close to the center of gravity of the printing shuttle as possible.
Claims7
A printer comprising:
- a printing head;
- a frame having guide grooves formed therein;
- a platen positioned opposite said printing head, having a shaft positioned within said guide grooves of said frame such that said guide grooves guide a movement of said platen in directions substantially perpendicular to said shaft of said platen to thereby adjust a distance between the platen and said printing head;
- and
- a motor including a rotating drive shaft, mechanically connected to said platen to rotate said platen about said shaft;
- wherein said guide grooves formed within said frame are shaped in an arc having a center of curvature at a point along said rotating drive shaft of said motor.
3 more elements
Dependencies are inferred from the claim text.