Liquid discharge head, liquid discharge unit, and liquid discharge apparatus

A liquid discharge head comprising:

• a nozzle plate including multiple nozzles from each of which a liquid is dischargeable in a first direction;
• a common chamber substrate including:
• a supply-side common chamber including:
• a first supply sidewall;
• and
• a second supply sidewall opposed to the first supply sidewall in a second direction orthogonal to the first direction;
• and
• a collection-side common chamber adjacent to the supply-side common chamber in the second direction, with one side wall intervening between the supply-side common chamber and the collection-side common chamber, the collection-side common chamber including:
• a first collection sidewall;
• and
• a second collection sidewall opposed to the first collection sidewall in the second direction, and
• the first supply sidewall and the first collection sidewall forming opposite side faces of the one side wall;
• a channel substrate laminated over the common chamber substrate in the first direction, the channel substrate including multiple individual chambers each communicating with the supply-side common chamber and the collection-side common chamber,
• a first bridge between the first supply sidewall and the second supply sidewall in the second direction to bridge the supply-side common chamber;
• and
• a second bridge between the first collection sidewall and the second collection sidewall in the second direction to bridge the collection-side common chamber,
• wherein the supply-side common chamber and the collection-side common chamber are adjacent in the first direction and the second direction.