Patent ID: 7101006
Filing Date: 2006-09-05
Classification: B41J

Abstract:
1. A printhead comprising: a first printhead substrate; a second printhead substrate; and at least one signal line shared between said first printhead substrate and said second printhead substrate, wherein said first printhead substrate comprises: wherein in a case where printing operation by driving said plurality of printing elements in accordance with the printing signal is suppressed, said selection circuit selects the predetermined signal, and drives said plurality of printing elements on the basis of the predetermined signal by a short pulse signal insufficient to print, and wherein said shared signal line is used for time-divisionally inputting a selection signal for driving said plurality of printing elements and the control signal, the control signal includes at least a 2-bit signal, and one bit of the 2-bit signal is input as a dedicated control signal to said selection circuit exclusively from said second printhead substrate.