JP2006347010A5

JP2006347010A5 -

Info

Publication number: JP2006347010A5
Application number: JP2005176249A
Authority: JP
Filing date: 2005-06-16
Publication date: 2008-07-31

Claims

A nozzle plate having a plurality of nozzles;
By being bonded to the nozzle plate, pressure chamber grooves serving as a plurality of pressure chambers respectively communicating with the nozzles, ink supply path grooves serving as a plurality of ink supply paths respectively communicating with the pressure chambers, and communication with the ink supply paths A common ink chamber groove serving as a common ink chamber, and a flow path substrate on which an ink supply port is formed,
In an ink jet recording head including a flow path unit formed by bonding the nozzle plate and the flow path substrate,
At least one of the nozzle plate and the flow path substrate has one or more through holes that do not communicate with any of the pressure chamber, the ink supply path, the common ink chamber, and the ink supply port. Inkjet recording head.

The through hole is outside a certain distance from the contour formed by the pressure chamber, the ink supply path, the common ink chamber, and the ink supply port, and is in a region inside the constant distance from the outer shape of the flow path unit. The ink jet recording head according to claim 1.

Non-joint area, which is the ratio of the area where the nozzle plate and the flow path substrate do not contact each other within the shape to the area of the shape formed by the outermost periphery of the portion that contacts when the nozzle plate and the flow path substrate are bonded together 3. The ink jet recording head according to claim 1, wherein the ratio is 5% or more and 50% or less.

Both the nozzle plate and the flow path substrate have one or more through holes that do not communicate with any of the pressure chamber, the ink supply path, the common ink chamber, and the ink supply port. Item 4. The ink jet recording head according to any one of Items 1 to 3.

5. The ink jet recording head according to claim 4, wherein the through holes provided in both the nozzle plate and the flow path substrate communicate with at least one pair of the through holes.