Twintractor

Details Twintractor Twintractor

1988-05-23

1990-12-04

Burr, Edgar S.

Typewriting machines

Sheet or web

For feeding web record-medium

4006162, 400584, 226 75, B41J 1130, B41J 1518, G03B 130

Patent

active

049749790

ABSTRACT:
The twintractor is a device designed to be incorporated into a wide carriage personal computer printer, or supplied as an accessory to such a printer or a typewriter, giving it the capability of transporting and printing upon, in the alternative, one of two continuous paper media. The availability of such a device will provide the users of personal computers or typewriters with the flexiblility to print jobs on more than one kind of paper output media without the repeated necessity of changing paper encountered in standard 80-column width printers or carriages. A means for changing the zero position or left margin for the print head when the choice of print media is made is also incorporated in the device, as well as paper sensors, paper parking detectors, and removable tractors.

REFERENCES:
patent: 3653483 (1972-04-01), Cortona et al.
patent: 3859864 (1975-01-01), Offermann
patent: 4023422 (1977-05-01), Jou et al.
patent: 4368994, Sweeney
patent: 4606663 (1986-08-01), Christoph et al.
IBM Technical Disclosure Bulletin, "Paper Overflow Detector", Casale et al., vol. 13, No. 12, May 1971, p. 3766.
IBM Technical Disclosure Bulletin, "Detachable Printer Pin Feed", Kroeker, vol. 18, No. 11, Apr. 1976, p. 3536.
IBM Technical Disclosure Bulletin, "Independent Dual Form Feed", Kratzert, vol. 20, No. 8, Jan. 1978, pp. 3179-3180.
IBM Technical Disclosure Bulletin, "Side-of-Forms, End-of-Forms, and Forms Jam-Detection Scheme for Printers", Brown et al., vol. 20, No. 11A, Apr. 1978.
IBM Technical Disclosure Bulletin, "Three-Way Clutch for Mulitple Paper Feeding", Mathews, vol. 25, No. 3A, Aug. 1982, pp. 1323-1324.
IBM Technical Disclosure Bulletin, "Mounting-Arrangement for Separate Paper Feed", vol. 28, No. 1, Jun. 1985, pp. 264-266.

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