Liquid discharge head, head module, head device, liquid discharge device, and liquid discharge apparatus

A liquid discharge head comprising:

• a plurality of nozzles arrayed in a two-dimensional matrix, the plurality of nozzles configured to discharge a liquid;
• a plurality of pressure chambers respectively communicating with the plurality of nozzles;
• a plurality of common-supply branch channels communicating with two or more of the plurality of pressure chambers;
• a plurality of common-collection branch channels communicating with two or more of the plurality of pressure chambers;
• a common-supply main channel communicating with the plurality of common-supply branch channels;
• a common-collection main channel communicating with the plurality of common-collection branch channels;
• and
• a bypass channel configured to connect one of the plurality of common-supply branch channels and one of the plurality of common-supply branch channels,
• wherein the plurality of common-supply branch channels and the plurality of common-supply branch channels are alternately arrayed in an array direction,
• the plurality of common-supply branch channels includes:
• a first common-supply branch channel;
• and
• a second common-supply branch channel having a longer channel length than the first common-supply branch channel,
• the first common-supply branch channel and the second common-supply branch channel are disposed on both sides of one of the plurality of common-collection branch channel in the array direction,
• the bypass channel includes:
• a first bypass channel configured to connect the first common-supply branch channel and said one of the plurality of common-collection branch channel, and
• a second bypass channel configured to connect the second common-supply branch channel and said one of the plurality of common-collection branch channel, and
• a channel resistance of the first bypass channel is larger than a channel resistance of the second bypass channel.