| CPC B41J 2/0451 (2013.01) [B41J 2/14 (2013.01); B41J 2002/14491 (2013.01)] | 13 Claims |
|
1. A printhead control circuit causing a printhead to execute printing, the printhead performing abnormality detection in response to a first signal inputted to a second terminal while a potential of a first terminal is a first potential, a second signal inputted to the second terminal while the potential of the first terminal is a second potential, a third signal inputted to the second terminal while a potential of a third terminal is a third potential, and a fourth signal inputted to the second terminal while the potential of the third terminal is a fourth potential, the printhead control circuit comprising:
a signal circuit outputting the first signal, the second signal, the third signal, and the fourth signal;
a first wire electrically coupled to the first terminal;
a second wire electrically coupled to the second terminal; and
a third wire electrically coupled to the third terminal, wherein
at least one of the first and second potentials is higher than potentials of the first and second signals,
at least one of the third and fourth potentials is higher than potentials of the third and fourth signals,
the signal circuit outputs the first signal to the second wire while the first wire is being supplied with a first voltage signal at the first potential, after outputting the first signal, the signal circuit outputs the second signal to the second wire while the first wire is being supplied with a second voltage signal at the second potential, which is different from the first potential, after outputting the second signal, the signal circuit outputs the third signal to the second wire while the third wire is being supplied with a third voltage signal at the third potential, after outputting the third signal, the signal circuit outputs the fourth signal to the second wire while the third wire is being supplied with a fourth voltage signal at the fourth potential, which is different from the third potential, and the signal circuit causes the printhead to perform the abnormality detection in response to the first signal, the second signal, the third signal, the fourth signal, the first voltage signal, the second voltage signal, the third voltage signal, and the fourth voltage signal.
|