Liquid discharge head and liquid discharge apparatus

A liquid discharge head, comprising:

• a plurality of individual channels respectively including a plurality of nozzles;
• a supply channel allowing an outlet of a storage chamber storing liquid to communicate with an inlet of each of the individual channels;
• a return channel allowing an outlet of each of the individual channels to communicate with an inlet of the storage chamber;
• a return filter provided in the return channel;
• a return branching channel branching off from a return upstream portion of the return channel, the return upstream portion being positioned upstream of the return filter;
• a valve switchable between a first position and a second position, the valve in the first position not allowing the individual channels to communicate with the return branching channel and allowing the individual channels to communicate with the storage chamber via the return channel, the valve in the second position not allowing the individual channels to communicate with the storage chamber via the return channel and allowing the individual channels to communicate with the return branching channel;
• a pump;
• and
• a controller,
• wherein, in a bubble removal process, the controller is configured to execute a first process in which the liquid moves from the storage chamber to flow through the supply channel, each of the individual channels, the return upstream portion, and the return branching channel by driving the pump with the valve being in the second position.