Color filter producing method and apparatus

A color filter producing method for producing a color filter by ejecting onto a substrate ink from an ink-jet head having a plurality of nozzles arranged substantially in a first direction while scanning said ink-jet head relatively to said substrate in a second direction substantially perpendicular to said first direction so that filter elements adjacent in said second direction may be colored to have different colors, said method comprising the steps of:

• performing main scanning of said ink-jet head relatively to said substrate in said second direction;
• performing sub-scanning of said ink-jet head relatively to said substrate in said first direction;
• ejecting ink from said ink-jet head to conduct coloration of a first color filter, during said main scanning, based on data concerning a first production condition;
• changing the type of color filter that is to be manufactured;
• changing said first production condition to a second production condition in accordance with said change in said type of color filter, and setting said second production condition;
• and
• ejecting ink from said ink-jet head to conduct coloration of a second color, filter, based on data concerning said second production condition,
• wherein said first production condition and said second production condition each comprise a quantity of ink ejected each time from said nozzles, a number of times said main scanning is performed, and a distance covered by a relative movement of one time of said sub-scanning, and
• wherein said number of times said main scanning is performed and said distance covered by a relative movement of one time of said sub-scanning are changed in accordance with the color density of said filter elements of said color filter that is to be manufactured.

A color filter producing method for producing a color filter by ejecting onto a substrate ink from an ink-jet head having a plurality of nozzles arranged substantially in a first direction while scanning said ink-jet head relatively to said substrate in a second direction substantially perpendicular to said first direction so that filter elements adjacent in said second direction may be colored to have different colors, said method comprising the steps of:

• performing main scanning of said ink-jet head relatively to said substrate in said second direction;
• performing sub-scanning of said ink-jet head relatively to said substrate in said first direction;
• ejecting ink from said ink-jet head to conduct coloration of a first color filter, during said main scanning, based on data concerning a first production condition;
• changing the type of color filter that is to be manufactured;
• changing said first production condition to a second production condition in accordance with said change in said type of color filter, and setting said second production condition;
• and
• ejecting ink from said ink-jet head to conduct coloration of a second color filter, based on data concerning said second production condition,
• wherein said first production condition and said second production condition each comprise a quantity of ink ejected each time from said nozzles, a number of times said main scanning is performed, and a distance covered by a relative movement of one time of said sub-scanning, and
• wherein at least one of said quantity of ejected ink, said number of times said main scanning is performed and said distance covered by a relative movement of one time of said sub-scanning is changed in accordance with said type of said color filter that is to be manufactured.

A color filter producing apparatus for producing a color filter by ejecting onto a substrate ink from an ink-jet head having a plurality of nozzles arranged substantially in a first direction while scanning said ink-jet head relatively to said substrate in a second direction substantially perpendicular to said first direction so that filter elements adjacent in said second direction may be colored to have different colors, said apparatus comprising:

• means for performing main scanning of said ink-jet head relatively to said substrate in said second direction;
• means for performing sub-scanning of said ink-jet head relatively to said substrate in said first direction;
• first control means for controlling a coloring operation for ejecting ink from said ink-jet head to conduct coloration of a first color filter, during said main scanning, based on data concerning a first production condition;
• means for changing the type of color filter that is to be manufactured;
• setting means for changing said first production condition to a second production condition in accordance with said change in said type of color filter to set said second production condition;
• and
• second control means for controlling a coloring operation for ejecting ink from said ink-jet head to conduct coloration of a second color filter, based on data concerning said second production condition,
• wherein said first production condition and said second production condition each comprise a quantity of ink ejected each time from said nozzles, a number of times said main scanning is performed, and a distance covered by a relative movement of one time of said sub-scanning, and
• wherein said quantity of ejected ink, said number of times said main scanning is performed and said distance covered by a relative movement of one time of said sub-scanning are changed in accordance with the widths of said color elements of said color filter that is to be manufactured.

A color filter producing apparatus for producing a color filter by ejecting onto a substrate ink from an ink-jet head having a plurality of nozzles arranged substantially in a first direction while scanning said ink-jet head relatively to said substrate in a second direction substantially perpendicular to said first direction so that filter elements adjacent in said second direction may be colored to have different colors, said apparatus comprising:

• means for performing main scanning of said ink-jet head relatively to said substrate in said second direction;
• means for performing sub-scanning of said ink-jet head relatively to said substrate in said first direction;
• first control means for controlling a coloring operation for ejecting ink from said ink-jet head to conduct coloration of a first color filter, during said main scanning, based on data concerning a first production condition;
• means for changing the type of color filter that is to be manufactured;
• setting means for changing said first production condition to a second production condition in accordance with said change in said type of color filter to set said second production condition;
• and
• second control means for controlling a coloring operation for ejecting ink from said ink-jet head to conduct coloration of a second color filter, based on data concerning said second production condition,
• wherein said first production condition and said second production condition each comprise a quantity of ink ejected each time from said nozzles, a number of times said main scanning is performed, and a distance covered by a relative movement of one time of said sub-scanning, and
• wherein said number of times said main scanning is performed and said distance covered by a relative movement of one time of said sub-scanning are changed in accordance with the color density of said filter elements of said color filter that is to be manufactured.

A color filter producing apparatus for producing a color filter by ejecting onto a substrate ink from an ink-jet head having a plurality of nozzles arranged substantially in a first direction while scanning said ink-jet head relatively to said substrate in a second direction substantially perpendicular to said first direction so that filter elements adjacent in said second direction may be colored to have different colors, said apparatus comprising:

• means for performing main scanning of said ink-jet head relatively to said substrate in said second condition;
• means for performing sub-scanning of said ink-jet head relatively to said substrate in said first direction;
• first control means for controlling a coloring operation for ejecting ink from said ink-jet head to conduct coloration of a first color filter, during said main scanning, based on data concerning a first production condition;
• means for changing the type of color filter that is to be manufactured;
• setting means for changing said first production condition to a second production condition in accordance with said change in said type of color filter to set said second production condition;
• and
• second control means for controlling a coloring operation for ejecting ink from said ink-jet head to conduct coloration of a second color filter, based on data concerning said second production condition,
• wherein said first production condition and said second production condition each comprise a quantity of ink ejected each time from said nozzles, a number of times said main scannings is performed, and a distance covered by a relative movement of one time of said sub-scanning, and
• wherein at least one of said quantity of ejected ink, said number of times said main scanning is performed and said distance by a relative movement of one time of said sub-scanning is changed in accordance with said type of said color filter that is to be manufactured.