Patent ID: 9039144
Filing Date: 2015-05-26
Classification: B41J

Abstract:
1. A base in which a plurality of element substrates each including a plurality of driving elements are arranged in an arrayed direction of said plurality of driving elements, comprising: a first terminal configured to input a first signal as a differential signal; a first pair of signal lines configured to transfer the differential signal of the first signal from said first terminal to said plurality of element substrates; a second terminal configured to input a second signal as a differential signal; and a second pair of signal lines configured to transfer the differential signal of the second signal from said second terminal to said plurality of element substrates, wherein each of said plurality of element substrates includes: a first amplifier configured to amplify the differential signal of the first signal transferred via said first pair of signal lines; a second amplifier configured to amplify the differential signal of the second signal transferred via said second pair of signal lines; and a first control circuit configured to control to change a gain of said first amplifier based on a first control signal from outside.