Printing apparatus with inked ribbon lift restrainer

Details Printing apparatus with inked ribbon lift restrainer Printing apparatus with inked ribbon lift restrainer

1979-07-16

1982-01-19

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Means auxiliary to ribbon mechanism

101336, 400656, 4001961, B41J 3504

Patent

active

043114016

ABSTRACT:
In a printing apparatus having a platen, a plurality of print hammers arranged in a horizontal row and a horizontally movable type carrier on which print carriers are arranged, a restraining member limits upward movement of a horizontally movable ink ribbon and thereby eliminates character omission. Between the print hammers and the type carriers are disposed the horizontally movable ink ribbon and a vertically movable print sheet on which a character impression is made upon impact of a selectively energized hammer. The print sheet is folded along transverse cut lines to define forms which are stacked together below the apparatus. When the print sheet is pulled upwardly, the folded portion tends to drag the ink ribbon upwardly displacing the ribbon from its print position. The restraining member is mounted above the ink ribbon to limit this upward movement of the ribbon.

REFERENCES:
patent: 2405562 (1946-08-01), Ellerbeck
patent: 3017981 (1962-01-01), Keith
patent: 3135198 (1964-06-01), Kingsley
patent: 3730082 (1973-05-01), Perry
IBM Technical Disclosure Bulletin, "Ribbon Retainer", Bonafino et al., vol. 19, No. 2, Jul. 1976, p. 439.

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