Patent ID: 8109593
Filing Date: 2012-02-07
Classification: B41J

Abstract:
1. A substrate for an inkjet head comprising: M×N energy generating elements for generating energy utilized to eject ink, arranged in an array, and divided into N blocks for performing time-divisional driving; and M signal lines for selecting energy generating elements to be driven in each of the N blocks, wherein the M signal lines include L signal lines (L<M) and (M−L) signal lines, the L signal lines for selecting, from the energy generating elements, L energy generating elements closest to a one end side of the substrate with respect to an arrangement direction of the energy generating elements, extending in the arrangement direction from a start point that is a portion in the one end side toward another end side of the substrate in the arrangement direction, the (M−L) signal lines for selecting, from the energy generating elements, (M−L) energy generating elements closest to the other end side from the energy generating elements, extending in the arrangement direction from a start point that is a portion at the other end side toward the one end side, wherein a number of the L signal lines crossing an intersecting direction intersecting the arrangement direction and a number of the (M−L) signal lines crossing the intersecting direction are decremented as distances from respective start points increase, and with the decrement in the numbers of the signal lines, the L signal lines and the (M−L) signal lines are arranged so that the remaining signal lines are shifted toward the energy generating elements, and wherein a temperature sensor for detecting a temperature of the substrate is provided in an empty area produced by the shift of the signal lines.