Patent ID: 6386700
Filing Date: 2002-05-14
Classification: B41J

Abstract:
A color-filter manufacturing method of coloring pixels of a color-subject material by scanning an ink-jet head, having a plurality of ink-discharge nozzles in a direction substantially orthogonal to a scanning direction, relative to the color-subject material, and discharging ink to the color-subject material by the plurality of ink-discharge nozzles, comprising the steps of:calculating a theoretical ink discharge pitch D for ink-discharge nozzles of the ink-jet head in accordance with an amount of ink discharged per single discharge of each of those ink-discharge nozzles for which the calculation is performed, in order to make an amount of ink discharged for each pixel constant; and discharging ink such that, assuming a minimum moving pitch of an amount of relative movement of the ink-jet head in the scanning direction is d, in a case where a value kD (k is an integer multiple of the theoretical pitch equal to or larger than 0) corresponding to a theoretical discharge position of an n-th ink dot discharged along the scanning direction coincides with nd (n is an integer multiple, equal to or larger than 0, of the minimum moving pitch corresponding to a theoretical discharge position of the n-th ink dot), ink is discharged at a position satisfying kd=nd, and in a case where Kd takes a value between nd and (n+1)d, ink is discharged at a position corresponding to nd or a position corresponding to (n+1)d.