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US 3,995,731 AGranted
Multi-ribbon cassette and ribbon drive
AssigneeNCR Corporation
InventorsHarry R. Miller, Michael S. Kumpf
Life of this patent
Estimating the term…
Abstract
A cassette contains a pair of endless printing ribbons on separate spools, each ribbon having an independent drive with a mechanism provided to enable shifting from one drive to the other, thereby permitting selection of one or the other ribbon.
Claims10
A multi-ribbon cassette operably associated with a print head to be carried thereby and including a
- first endless ribbon arranged to be driven past said print head,
- a second endless ribbon adjacent said first ribbon and arranged to be driven past said print head,
- camming means operably connected with said cassette for positioning said cassette in a first or a second position for aligning said first or said second endless ribbon in printing relationship with said print head,
- axially aligned advancing means engaging each of said first and second ribbons and effective when operated for driving same, and
- means aligned with each of said advancing means and effective for driving one or the other thereof dependent upon the position of said cassette.
2 more elements
In a printer having a print head movable in transverse manner, a multi-ribbon cassette operably associated with said print head to be carried thereby, and means for driving the ribbons past said print head comprising
- drive means carried by said print head,
- driven means including a plurality of ribbon engaging drive elements positioned within said cassette, each element effective to advance one of said ribbons when driven and each element engageable by said drive means to be driven thereby, and
- camming means operable to move said cassette in relation to said print head to enable engagement of said drive means with one or another of said ribbon drive elements for advancing its associated ribbon, the ribbon selected to be advanced being dependent upon the position of said cassette in relation to said print head.
Dependencies are inferred from the claim text.