Drawing method, inkjet head, drawing apparatus, method for fabricating printed wiring board and method for manufacturing color filter

An inkjet head comprising:

• three or more nozzles arranged in a direction so that each of the three or more nozzles discharging a liquid drop to draw a pattern extending,
• wherein the plurality of nozzles are grouped into a plurality of groups that include at least a group composed of two or more adjacent nozzles and each of which is composed of one, or two or more nozzles,
• two nozzles adjacent to each other in the group including two or more adjacent nozzle have such a pitch that liquid drops discharged from the two nozzles hit the target material to overlap each other, and
• a nozzle disposed at an end of one group and an adjacent nozzle disposed at an end of an adjacent group have such a pitch that liquid drops discharged from the adjacent nozzles hit the target material to be spaced from each other so as to spread and overlap each other.

A drawing apparatus for drawing a pattern extending in a direction on a target material by discharging three or more liquid drops by an inkjet method, comprising:

• an inkjet head which is discharges the plurality of liquid drops;
• and
• a moving mechanism which moves the inkjet head relatively to the target material in the direction,
• wherein three or more liquid drops are grouped into a plurality of groups that include at least a group composed of two or more adjacent liquid drops and each of which is composed of one, or two or more liquid drops, and
• each liquid drop included in a group composed of two or more liquid drops is discharged to hit the target material to overlap an adjacent liquid drop of the same group, and a liquid drop at an end of one group hits the target material to be spaced from an adjacent liquid drop at an end of an adjacent group so that the liquid drop at an end of one group is spread and overlapped the adjacent liquid drop at the end of the adjacent group when spread on the target material.

A drawing apparatus for drawing a pattern extending in a direction on a target material by discharging three or more liquid drops by an inkjet method, comprising:

• an inkjet head which discharges the plurality of liquid drops;
• and
• a moving mechanism which moves the inkjet head relatively to the target material in the direction,
• wherein the inkjet heat is relatively moved while successively discharging the plurality of liquid drops along the pattern with one end of the pattern set as a starting point, and
• when n is an odd number or an even number, an (n+1)th liquid drop hits the target material to overlap an area where an nth liquid drop has been hit and spread on the target material,
• an (n+2)th liquid drop hits the target material not to overlap an area where the (n+1)th liquid drop has been hit and spread on the target material so that the (n+1)th liquid drop and the (n+2)th liquid drop are spread and overlapped each other when spread on the target material.

A drawing apparatus comprising:

• an inkjet head said inkjet head comprising:
• three or more nozzles arranged in a direction so that each of the three or more nozzles discharging a liquid drop to draw a pattern extending,
• wherein the plurality of nozzles are grouped into a plurality of groups that include at least a group composed of two or more adjacent nozzles and each of which is composed of one, or two or more nozzles,
• two nozzles adjacent to each other in the group including two or more adjacent nozzles have such a pitch that liquid drops discharged from the two nozzles hit the target material to overlap each other, and
• a nozzle disposed at an end of one group and an adjacent nozzle disposed at an end of an adjacent group have such a pitch that liquid drops discharged from the adjacent nozzles hit the target material to be spaced from each other so as to spread and overlan each other.

A method for manufacturing a printed wiring board on which a wiring pattern is included, comprising:

• drawing a wiring pattern extending in a direction on a target material by discharging three or more liquid drops by an inkjet method, comprising:
• grouping the three or more liquid drods into a plurality of groups which include at least a group composed of two or more adjacent liquid drops and each of which is composed of one, or two or more liquid drops;
• discharging each liquid drop included in the group composed of two or more liquid drops so that the adjacent liquid drop hits the target material to overlap each other;
• and
• discharging a liquid drop at an end of each group so that the liquid drop hits the target material to be sdaced from an adjacent liquid drop at an end of an adjacent group and the liquid drop is spread on the adjacent liquid drod disdosed at the end of the adjacent group.

A method for manufacturing a color filter on which a plurality of pixels and a black matrix partitioning the plurality of pixels are provided, comprising:

• drawing at least one of the plurality of pixels and the black matrix by drawing a pattern extending in a direction on a target material by discharging three or more liquid drops by an inkjet method, comprising:
• grouping the three or more liquid drops into a plurality of groups which include at least a group composed of two or more adjacent liquid drods and each of which is composed of one, or two or more liquid drops;
• discharging each liquid drop included in the group composed of two or more liquid drops so that the adjacent liquid drop hits the target material to overlap each other;
• and
• discharging a liquid drod at an end of each group so that the liquid drop hits the target material to be spaced from an adjacent liquid drop at an end of an adjacent group and the liquid drod is spread on the adjacent liquid drop disposed at the end of the adjacent group.