Sliding code disc reader and detent therefor for dual pitch web

Details Sliding code disc reader and detent therefor for dual pitch web Sliding code disc reader and detent therefor for dual pitch web

1977-02-24

1979-04-03

Wright, Jr., Ernest T.

Typewriting machines

Sheet or web

For feeding web record-medium

4006161, B41J 1500

Patent

active

041474406

ABSTRACT:
A code reader, in the form of a photoelectric sensing device, is slidable across a coded disc which disc includes a first circle of apertures at one diameter designating a code channel for advancing record media, for example, at a spacing of six lines per inch and a second circle of apertures at another diameter designating a code channel for advancing the record media at a spacing of eight lines per inch. A positive locking detent is associated with the code reader for maintaining the desired position thereof for the selected code channel and line spacing.

REFERENCES:
patent: 2981396 (1961-04-01), Lane
patent: 3323700 (1967-06-01), Epstein et al.
patent: 3552619 (1971-01-01), Skiba
patent: 3643039 (1972-02-01), Barcomb et al.
patent: 3658163 (1972-04-01), Sniderman
patent: 3857471 (1974-12-01), Hoffman et al.
patent: 3888340 (1975-06-01), Hoffman
IBM Technical Disclosure Bulletin, "Printer Paper Drive Mechanism," Mathurin et al., vol. 10, No. 3, Aug. 1967 p. 281.

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