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US 7,677,705 B2Granted
Ink jet head for providing stable ink discharge, method of manufacturing the ink jet head, and ink jet recording device
AssigneePanasonic Corporation
InventorKoji Ikeda
Life of this patent
Estimating the term…
Abstract
An ink jet head with a plurality of ink jetting units enabling the easy filling of ink and an operation for recovering from defective jetting, a method of manufacturing the ink jet head, and an ink jet recording device. The ink jet head comprises a nozzle plate in which a nozzle jetting the ink is formed, a pressure application means applying a pressure to the ink, a wall member holding the nozzle plate, a head plate holding the plurality of ink jetting units, sealing members sealing clearances between the ink jetting units and the head plate so that air is not passed there through and movably supporting the ink jetting units on the head plate by deforming by itself, and fixing members fixing the ink jetting units to the head plate.
Claims16
An ink-jet head for providing stable ink discharge, comprising:
- a plurality of ink discharge units, each of said plurality of discharge units including:
- a nozzle plate in which a nozzle that discharges ink is formed;
- a pressure application section that applies pressure to ink and includes a diaphragm that moves relative to said nozzle plate, wherein said diaphragm moves in a direction approximately parallel to a discharge direction of an ink drop discharged from said nozzle;
- and
- a nozzle plate holding member that holds said nozzle plate;
- a head plate that holds said plurality of ink discharge units;
- a sealing member that seals a gap between each of said plurality of ink discharge units and said head plate so that air does not pass through and that elastically supports each of said plurality of ink discharge units with respect to said head plate;
- and
- a fixing member that fixes each of said plurality of ink discharge units and said head plate so as to maintain alignment of said ink discharge unit with said head plate.
6 more elements
An ink-jet head for providing stable ink discharge, comprising:
- a plurality of ink discharge units, each of said plurality of discharge units including:
- a nozzle plate in which a nozzle that discharges ink is formed;
- a pressure application section that applies pressure to ink;
- and
- a nozzle plate holding member that holds said nozzle plate;
- a head plate that holds said plurality of ink discharge units;
- a sealing member that seals a gap between each of said plurality of ink discharge units and said head plate so that air does not pass through and that elastically supports each of said plurality of ink discharge units with respect to said head plate;
- and
- a fixing member that fixes each of said plurality of ink discharge units and said head plate so as to maintain alignment of said ink discharge unit with said head plate, wherein:
- said head plate has an aperture part through which an ink drop discharged from at least one of said plurality of ink discharge units passes, and
- ink repellence processing is performed on at least part of a surface of said head plate on a side of said head plate on which said ink drop is discharged.
8 more elements
An ink-jet head for providing stable ink discharge, comprising:
- a plurality of ink discharge units, each of said plurality of discharge units including:
- a nozzle plate in which a nozzle that discharges ink is formed;
- a pressure application section that applies pressure to ink;
- and
- a nozzle plate holding member that holds said nozzle plate;
- a head plate that holds said plurality of ink discharge units;
- a sealing member that seals a gap between each of said plurality of ink discharge units and said head plate so that air does not pass through and that elastically supports each of said plurality of ink discharge units with respect to said head plate;
- and
- a fixing member that fixes each of said plurality of ink discharge units and said head plate so as to maintain alignment of said ink discharge unit with said head plate, wherein:
- said head plate has an aperture part through which an ink drop discharged from at least one of said plurality of ink discharge units passes, and
- ink repellence processing is performed on wall surface of said aperture part that is not in contact with said sealing member on a side of said head plate on which said ink drop is discharged.
8 more elements
An ink-jet head for providing stable ink discharge, comprising;
- a plurality of ink discharge units, each of said plurality of discharge units including:
- a nozzle plate in which a nozzle that discharges ink is formed;
- a pressure application section that applies pressure to ink;
- and
- a nozzle plate holding member that holds said nozzle plate;
- a head plate that holds said plurality of ink discharge units;
- a sealing member that seals a gap between each of said plurality of ink discharge units and said head plate so that air does not pass through and that elastically supports each of said plurality of ink discharge units with respect to said head plate;
- a fixing member that fixes each of said plurality of ink discharge units and said head plate so as to maintain alignment of said ink discharge unit with said head plate;
- and
- a temperature changing section that changes a temperature of said head plate, wherein when said temperature changing section changes a temperature of said head plate, thermal expansion and contraction of said head plate occurs, and spacing of said nozzles of said plurality of ink discharge units is maintained at a predetermined value.
7 more elements
Dependencies are inferred from the claim text.