Electronic typewriter with automatic power-off device

Details Electronic typewriter with automatic power-off device Electronic typewriter with automatic power-off device

1985-05-23

1985-12-10

Burr, Edgar S.

Typewriting machines

Safety switch or condition-responsive-cutoff switch for...

400479, 364519, B41J 2938

Patent

active

045576157

ABSTRACT:
In an electronic typewriter adapted to be set in an automatic power off mode, when no key operation is made for a predetermined period of time after the final key operation, the automatic power off mode can be cancelled through operation of a clearing key and the condition based on the key operation finally made, is reset. In the automatic power off mode, the OFF-ON operation of a main switch also cancels the automatic power off mode and resets the condition based on the key operation finally made just before the setting of the automatic power off mode.

REFERENCES:
patent: 3753004 (1973-08-01), Dominic
patent: 3870138 (1975-03-01), Sato et al.
patent: 4070587 (1978-01-01), Hanakata
patent: 4279523 (1981-07-01), Ringle
patent: 4306299 (1981-12-01), Check, Jr. et al.
patent: 4316246 (1982-02-01), Hartley et al.
IBM Tech. Disc. Bulletin, Gruber et al., "Power Saver for Electronic Typewriter," vol. 22, No. 9, Feb. 1980, pp. 4123-4124.
IBM Tech. Disc. Bulletin, Barksdale et al., "Power Saving Feature for Word Processing Systems," vol. 23, No. 10, Mar. 1981, p. 4809.

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