Patent ID: 7441859
Filing Date: 2008-10-28
Classification: B41J

Abstract:
1. A recording-head element substrate having a plurality of electrothermal converters arranged thereon in a row pattern, comprising: at least one element controlling application of electric current on the plurality of electrothermal converters; at least one common electrode energizing the plurality of electrothermal converters; at least one logic circuit selectively driving the plurality of electrothermal converters; a plurality of temperature-adjusting heating devices, the plurality of temperature-adjusting heating devices being different from the plurality of electrothermal converters; and at least one heat-controlling circuit individually controlling the plurality of temperature-adjusting heating devices, wherein control information for individually controlling the plurality of temperature-adjusting heating devices by the heat-controlling circuit is externally received via an input terminal and image information inputted to the logic circuit for selectively driving the electrothermal converters or information for controlling a time-division-drive of the row of the electrothermal converters is inputted via the same input terminal.