Impact printer cardholder with integral ribbon guide and end of

Details Impact printer cardholder with integral ribbon guide and end of Impact printer cardholder with integral ribbon guide and end of

1978-11-06

1980-07-15

Crowder, Clifford D.

Typewriting machines

Including interposed inking device for record-medium

Means auxiliary to ribbon mechanism

4001442, 400521, B41J 3536

Patent

active

042125529

ABSTRACT:
In an impact printer with a conventional combination of platen and cardholder wherein the cardholder has an inner surface with a curvature matching that of the platen and is mounted adjacent to but spaced from the platen so that a sheet of printing medium may be moved between the cardholder and platen and wherein conventional impact printing is carried out by impact means acting upon the sheet through an opening in the cardholder, an improved cardholder structure is provided wherein the cardholder comprises integral ribbon guide means for guiding the printer ribbon in a path along the outer surface of the cardholder across the opening whereby the impact means may selectively drive the ribbon through the opening to print upon the sheet.
In accordance with another aspect of the present invention, the cardholder further comprises integral end of ribbon sensing means mounted in a fixed position along said ribbon path.

REFERENCES:
patent: 1174555 (1916-03-01), Fowler
patent: 1679845 (1928-08-01), Waldheim
patent: 2044072 (1936-06-01), Going
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patent: 2345557 (1944-04-01), Elliott
patent: 2687200 (1954-08-01), Ford
patent: 2695091 (1954-11-01), Ford et al.
patent: 2821284 (1958-01-01), Garwood et al.
patent: 3404628 (1968-10-01), Lee
Paulson, "Illuminated Card Guide," IBM Technical Disclosure Bulletin, vol. 18, No. 9, Feb. 1976, p. 2943.
Craft, "Paper Insertion Realignment Mechanism," IBM Technical Disclosure Bulletin, vol. 11, No. 4, Sep. 1968, p. 390.
Coots et al., "Print Shield," IBM Tech. Disc. Bul., vol. 18, No. 9, Feb. 1976, pp. 2954-2955.
Habick et al., "Typing Shield," IBM Tech. Disc. Bul., vol. 9, No. 6, Nov. 1966, p. 688.
Isaacs, "Aligned Underscore Guide," IBM Tech. Disc. Bul., vol. 11, No. 11, Apr. 1969, p. 1489.

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