US PATENT SUBCLASS 400 / 219
.~.~ Including means responsive to depletion of ribbon supply

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

191  DF  INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM {15}
218  DF  .~ Ribbon-reversing mechanism {4}
219.~.~ Including means responsive to depletion of ribbon supply {4}
219.1  DF  .~.~.~> Including an electric switch
219.2  DF  .~.~.~> Including lever retained in spool by wound ribbon
219.3  DF  .~.~.~> Including senser for diameter of wound ribbon {1}
219.5  DF  .~.~.~> Including projection from ribbon

DEFINITION

Classification: 400/219

Including means responsive to depletion of ribbon supply:

(under subclass 218) Subject matter wherein the ribbon* is moved to the print-point* from a location where the ribbon has been stored on the typewriter, and wherein there is means for detecting when such ribbon storage has been exhausted to cause the ribbon to move in the opposite direction.