Recording head and apparatus for detecting contact condition

摘要

A recording head utilizes an AND circuit (605) which performs logical product between inputs from signal input terminals and a warning signal output terminal (FB) which outputs a result of the AND circuit (605). 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.