Method for producing ink jet recording head, and ink jet recording head produced by the same method
AssigneeCanon Kabushiki Kaisha
InventorsKenji Aono, Akihiko Shimomura
Life of this patent
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Abstract
A method for producing an ink jet recording head comprising the following steps, a step which forms the photosensitive water-repellent processing layer in the ink discharge port face, a step which irradiates light onto the water-repellent forming region and hydrophilic forming region in the water-repellent processing layer, to cure the layer, a step which irradiates light selectively onto the hydrophilic forming region to reduce water repellency of the water-repellent processing layer and to impart hydrophilicity to the hydrophilic forming region, and a step which forms an opening, which constitutes part of the ink discharge port, in the water-repellent processing layer.
Claims12
A method for producing an ink jet recording head, equipped with an ink discharge port from which ink is discharged, and ink discharge port face which is a flat surface and on which the ink discharge port is arranged and a discharge energy generating element which generates energy for discharging the ink, and provided with a water-repellent processing layer having a partially hydrophilic portion in proximity to a water-repellent region around the ink discharge port in the ink discharge port face, comprising the following steps:
- forming a photosensitive water-repellent processing layer on the ink discharge port face,
- irradiating light onto a water-repellent forming region and a hydrophilic forming region in said water-repellent processing layer, to cure said layer,
- irradiating light only onto said hydrophilic forming region to reduce water repellancy of said water-repellent processing layer and to impart hydrophilicity to said hydrophilic forming region while maintaining the flat surface state of the discharge port face, and
- forming an opening, which constitutes a part of said ink discharge port, in said water-repellent processing layer by development.
A method for producing an ink jet recording head, equipped with an ink discharge port from which ink is discharged, an ink discharge port face which is a flat surface and on which the ink discharge port is arranged and a discharge energy generating element which generates energy for discharging the ink, and provided with a water repellant processing layer having a partially hydrophilic portion in proximity to a water-repellant region around the ink discharge port in the ink discharge port face, comprising the following steps:
- forming a photosensitive water-repellent processing layer on the ink discharge port face,
- irradiating light onto a water-repellent forming region in said water-repellent processing layer, to cure said water-repellent layer,
- irradiating light in a quantity in excess of the level required for curing said water-repellent processing layer onto a hydrophilic forming region to reduce water repellancy of said water-repellent processing layer and to impart hydrophilicity to said hydrophilic forming region while maintaining the flat surface state of the discharge port face, and
- forming an opening, which constitutes a part of said ink discharge port, in said water-repellent processing layer by development.
Dependencies are inferred from the claim text.