Patent attributes
A liquid discharge head includes: a substrate; pressure chambers provided on a surface of the substrate and through which a first liquid and a second liquid flow; a pressure generating element configured to pressurize the first liquid; and a discharge port communicating with at least one pressure chamber and through which the second liquid is discharged. First and second supply channels, first and second collecting channels, third and fourth supply channels, and third and fourth collecting channels are formed on the substrate. A common channel is formed between a first pressure chamber row and a second pressure chamber row. The common channel communicates with the first supply channel and the third supply channel, or communicates with the second supply channel and the fourth supply channel, or communicates with the first collecting channel and the third collecting channel, or communicates with the second collecting channel and the fourth collecting channel.
