Ink-jet head, method for manufacturing ink-jet head and ink-jet printer having ink-jet head
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsAtsuo Sakaida, Atsushi Hirota
Life of this patent
Estimating the term…
Abstract
An ink-jet head includes a passage unit including a nozzle plate unit having a nozzle plate in which nozzles are formed, and a main unit fixed on the nozzle plate unit in a laminating direction and having a plurality of pressure chambers, each of the plurality of pressure chambers having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers arranged along a plane to neighbor each other, and an actuator unit, fixed on a side of the main unit opposite to a side in which the main unit is fixed on the nozzle plate unit, for changing the volume of each of said pressure chambers.
Claims22
An ink-jet head, comprising:
- a passage unit including a nozzle plate unit having a nozzle plate in which nozzles are formed, and a main unit fixed on said nozzle plate unit in a laminating direction and having a plurality of pressure chambers, each of the plurality of pressure chambers having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers arranged along a plane to neighbor each other;
- and
- an actuator unit, fixed on a side of said main unit opposite to a side in which the main unit is fixed on said nozzle plate unit, for changing the volume of each of said pressure chambers, wherein a linear expansion coefficient of a material making said actuator unit is smaller than that of a material making said main unit, and a linear expansion coefficient of a material making said nozzle plate unit is smaller than that of the material making said main unit.
A method for manufacturing an ink-jet head with a passage unit including a nozzle plate unit having a nozzle plate in which nozzles are formed and a main unit having a plurality of pressure chambers, each of the plurality of pressure chambers having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers arranged along a plane to neighbor each other;
- and an actuator unit for changing the volume of each of said pressure chambers, comprising:
- fixing said nozzle plate unit and said main unit, with the main unit made of a material having a linear expansion coefficient larger than that of a material making said nozzle plate unit, in a heated state in a laminating direction;
- and
- fixing said actuator unit, with the actuator unit made of a material having a linear expansion coefficient smaller than that of the material making said main unit, on a side of said main unit opposite to a side in which the main unit is fixed with said nozzle plate unit, in a heated state.
An ink-jet printer having an ink-jet head, comprising:
- a passage unit including a nozzle plate unit having a nozzle plate in which nozzles are formed, and a main unit fixed on said nozzle plate unit in a laminating direction and having a plurality of pressure chambers, each of the plurality of pressure chambers having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers arranged along a plane to neighbor each other;
- and
- an actuator unit, fixed on a side of said main unit opposite to a side in which the main unit is fixed on said nozzle plate unit, for changing the volume of each of said pressure chambers, wherein a linear expansion coefficient of a material making said actuator unit is smaller than that of a material making said main unit, and a linear expansion coefficient of a material making said nozzle plate unit is smaller than that of the material making said main unit.
An ink-jet head, comprising:
- a passage unit including a plurality of pressure chambers each having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers being arranged along a plane to neighbor each other;
- an actuator unit fixed on a surface of said passage unit for changing a volume of said pressure chambers;
- and
- a support member arranged over a plane of the actuator unit and facing a direction opposite to said passage unit, wherein a linear expansion coefficient of a material making said passage unit is larger than that of a material making said actuator unit, and a linear expansion coefficient of a material making said support member is larger than that of the material making said actuator unit.
A method for manufacturing an ink-jet head with a passage unit including a plurality of pressure chambers each having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers being arranged along a plane to neighbor each other and an actuator unit for changing the volume of said pressure chambers, comprising:
- fixing said actuator unit, which is made of a material having a linear expansion coefficient smaller than that of a material making said passage unit, in a heated state on a surface of said passage unit;
- and
- arranging a support member, which is made of a material having a larger linear expansion coefficient than that of the material making said actuator unit, over a plane of the actuator unit and facing a direction opposite to said passage unit.
An ink-jet printer having an ink-jet head, comprising:
- a passage unit including a plurality of pressure chambers each having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers being arranged along a plane to neighbor each other;
- an actuator unit fixed on a surface of said passage unit for changing a volume of said pressure chambers;
- and
- a support member arranged over a plane of the actuator unit and facing a direction opposite to said passage unit, wherein a linear expansion coefficient of a material making said passage unit is larger than that of a material making said actuator unit, and a linear expansion coefficient of a material making said support member is larger than that of the material making said actuator unit.
An ink-jet head, comprising:
- a passage unit including a plurality of pressure chambers each having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers being arranged along a plane to neighbor each other;
- actuator units fixed in a staggered shape on a surface of said passage unit for changing the volume of said pressure chambers;
- and
- a support member arranged over a plane of the actuator units and facing a direction opposite to said passage unit and having a plurality of staggeringly arranged fixing portions fixed on a surface of said passage unit except for a region where said actuator units are fixed on the passage unit, wherein said fixing portions of said support member and said actuator units are arranged adjacent to each other on said surface of said passage unit, and a linear expansion coefficient of a material making said passage unit is larger than that of a material making said actuator units, and a linear expansion coefficient of a material making said support member is larger than that of the material making said actuator units.
A method for manufacturing an ink-jet head with a passage unit including a plurality of pressure chambers each having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers being arranged along a plane to neighbor each other, actuator units for changing a volume of said pressure chambers and a support member arranged over a plane of the actuator units and facing a direction opposite to said passage unit, comprising:
- fixing said actuator units, which are made of a material having a linear expansion coefficient smaller than that of a material making said passage unit, in a heated state so that they are arranged in a staggered shape on a surface of said passage unit;
- and
- fixing said support member, which is made of a material having a linear expansion coefficient larger than that of the material making said actuator units, on said passage unit except for a region where said actuator units are fixed on the passage unit so that a plurality of fixing portions are arranged in a staggered shape on said surface of said passage unit.
An ink-jet printer having an ink-jet head, comprising:
- a passage unit including a plurality of pressure chambers each having one end connected with a nozzle and an other end connected with an ink supply source, the plurality of pressure chambers being arranged along a plane to neighbor each other;
- actuator units fixed in a staggered shape on a surface of said passage unit for changing the volume of said pressure chambers;
- and
- a support member arranged over a plane of the actuator units and facing a direction opposite to said passage unit and having a plurality of staggeringly arranged fixing portions fixed on a surface of said passage unit except for a region where said actuator units are fixed on the passage unit, wherein said fixing portions of said support member and said actuator units are arranged adjacent to each other on said surface of said passage unit, and a linear expansion coefficient of a material making said passage unit is larger than that of a material making said actuator units, and a linear expansion coefficient of a material making said support member is larger than that of the material making said actuator units.
Dependencies are inferred from the claim text.