Recording head and apparatus for detecting contact condition

Details Recording head and apparatus for detecting contact condition Recording head and apparatus for detecting contact condition

1996-03-13

1998-10-27

Hecker, Stuart N.

Incremental printing of symbolic information

Ink jet

Controller

361 86, B41J 2938

Patent

active

058283862

ABSTRACT:
A recording head utilizes an AND circuit which performs logical product between inputs from signal input terminals and a warning signal output terminal which outputs a result of the AND circuit. A recording apparatus in which the recording head is installed has a control circuit which supplies a high level signal to the signal input terminals and which inputs a warning signal from the warning signal output terminal. The control circuit judges that the contact of the recording apparatus with the recording head is good if the warning signal is a high level, or judges that the contact is poor if it is not so.

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