Liquid droplet jetting apparatus and ink-jet printer
AssigneeBrother Kogyo Kabushiki Kaisha
InventorHiroto Sugahara
Life of this patent
Estimating the term…
Abstract
A head is formed by stacking a plurality of plates including a cavity plate and a manifold plate, and includes a plurality of manifolds formed in the manifold plate, a communicating channel which makes the manifolds formed in the manifold plate communicate, and a plurality of pressure chambers formed in the cavity plate, which communicate with the manifold. Each pressure chamber is isolated by a partition wall of the cavity plate. Since the communicating channel and the pressure chambers are formed at different positions in terms of height, it is possible to widen a width of the communicating channel without widening an interval between the pressure chambers, and it is possible to accelerate a movement of a liquid between the manifolds.
Claims20
A liquid droplet jetting apparatus which jets a droplet of a liquid, comprising:
- a channel unit which includes a plurality of nozzles, a plurality of pressure chambers arranged in a predetermined plane, a partition wall partitioning the pressure chambers, a plurality of common liquid chambers supplying the liquid to the pressure chambers, a plurality of liquid channels communicating the nozzles, the pressure chambers and the common liquid chambers, and a communicating channel communicating the common liquid chambers;
- and
- a pressure applying mechanism which applies selectively a jetting pressure to the liquid in the pressure chambers, wherein
- the communicating channel is formed in the channel unit, at a position which overlaps with the partition wall in an orthogonal direction which is orthogonal to a planar direction of the predetermined plane, and which is different from the pressure chamber in the orthogonal direction.
An ink-jet printer which jets a droplet of an ink on to a medium, comprising:
- a transporting mechanism which transports the medium in a predetermined direction;
- and
- a head which includes a channel unit which has a plurality of nozzles, a plurality of pressure chambers arranged in a predetermined plane, a partition wall partitioning the pressure chambers, a plurality of liquid channels communicating the nozzles, the pressure chambers, and the common liquid chambers, and a communicating channel communicating the common liquid chambers, and a pressure applying mechanism which applies selectively a jetting pressure to the liquid in the pressure chambers, wherein
- the communicating channel is formed in the channel unit, at a position which overlaps with the partition wall in an orthogonal direction which is orthogonal to a planar direction of the predetermined plane, and which is different from the pressure chamber in the orthogonal direction.
Dependencies are inferred from the claim text.