Liquid discharge head and compliance plate
A compliance plate includes a flexible film that forms a portion of a wall surface of a liquid storage chamber that is supplied with a liquid that is to be discharged from a nozzle, a support plate that supports the flexible film at an opposite side of the flexible film to the liquid storage chamber and that has an opening portion that exposes the flexible film, and a plurality of regions that include a first region and a second region that have a compliance function, the first region and the second region having mutually different characteristic vibration periods.
1. A compliance plate comprising:
a flexible film that forms a portion of a wall surface of a liquid storage chamber that is supplied with a liquid that is to be discharged from a nozzle;
a support plate that supports the flexible film at an opposite side of the flexible film to the liquid storage chamber and that has an opening portion that exposes the flexible film; a closure plate that closes the opening portion; and
a plurality of regions that include a first region and a second region that have a compliance function, the first region and the second region having mutually different characteristic vibration periods because the first and second regions have differences in bar portions or island portions that are included in the first and second regions.
2. The compliance plate according to claim 1 ,
wherein the support plate includes the bar portions, the bar portions protruding to a side of the opening portion, and
wherein the first region and the second region are provided with bar portions that are different in shape between the first region and the second region.
3. The compliance plate according to claim 2 ,
wherein the support plate includes bar portions protruding into the opening portion from one or both of mutually facing side surfaces of the opening portion, and
wherein the first region and the second region are different from each other in position of the bar portions in each region.
4. The compliance plate according to claim 2 , wherein the first region and the second region are provided with mutually different numbers of the bar portions.
5. The compliance plate according to claim 1 ,
wherein the support plate is provided with the island portions, the island portions being present inside the opening portion, and
wherein the first region and the second region are provided with the island portions that are different in shape between the first region and the second region.
6. The compliance plate according to claim 5 , wherein the first region and the second region are provided with mutually different numbers of the island portions.
7. The compliance plate according to claim 1 , wherein the flexible film has, at locations corresponding to the first region and the second region, portions that are different between the first region and the second region in thickness of the flexible film.
8. A liquid discharge head comprising:
a flexible film that forms a portion of a wall surface of a liquid storage chamber that is supplied with a liquid that is to be discharged from a nozzle;
a support plate that supports the flexible film at an opposite side of the flexible film to the liquid storage chamber and that has an opening portion that exposes the flexible film;
wherein the support plate includes a first bar portion protruding to a side of the opening portion and a second bar portion protruding to a side of the opening portion, and
wherein the first and the second bar portions are different in shape or size.
9. A liquid discharge head comprising:
a flexible film that forms a portion of a wall surface of a liquid storage chamber that is supplied with a liquid that is to be discharged from a nozzle;
a support plate that supports the flexible film at an opposite side of the flexible film to the liquid storage chamber and that has an opening portion that exposes the flexible film;
wherein the support plate is provided with a first island portion and a second island portion inside the opening portion, and
wherein the first and the second island portions are different in shape or size.
10. A liquid discharge head comprising:
a flexible film that forms a portion of a wall surface of a liquid storage chamber that is supplied with a liquid that is to be discharged from a nozzle;
a support plate that supports the flexible film at an opposite side of the flexible film to the liquid storage chamber and that has an opening portion that exposes the flexible film;
wherein the flexible film includes a first region and a second region, the second region is different in thickness from the first region.