Circuit arrangement for determining the position of a printer ca

Details Circuit arrangement for determining the position of a printer ca Circuit arrangement for determining the position of a printer ca

1978-04-25

1980-01-29

Wright, Jr., Ernest T.

Typewriting machines

Means auxiliary to typewriting function

Indicator means

400 64, B41J 530

Patent

active

041859316

ABSTRACT:
In an illustrative embodiment, a first advance signal is produced whenever a character is supplied to the keyboard control unit which is to be associated with advance of the printer carriage. Such a character may be shifted through a keyboard buffer storage, and then produce a second advance signal when it is transmitted to a receiving device for actually triggering a carriage advance. Second control signals are also produced in response to characters from other input units or which are received via a trunk line. A counter registers carriage position to be attained when the characters in the buffer have all been printed, for example by responding to second advance signals which are in addition to those due to characters from the buffer, and for responding to first control signals as a measure of characters being supplied via the buffer storage system. Alternatively, the second advance signals can also be the measure of characters supplied from the buffer.

REFERENCES:
patent: 3981383 (1976-09-01), Bittner et al.

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