Liquid chamber reinforcement in contact with filter

A printhead comprising:

• a liquid manifold;
• a filter in fluid communication with the liquid manifold;
• a nozzle plate including a length and an array of nozzles extending along the length of the nozzle plate;
• a liquid chamber positioned between the nozzle plate and the filter, the liquid chamber being in fluid communication with the array of nozzles and the filter, the liquid chamber including a width that is substantially perpendicular to the length of the nozzle plate, the liquid chamber including a structure that is distinct from the filter and the nozzle plate, the structure being spaced apart from the nozzle plate and in contact with the filter, the structure spanning the width of the liquid chamber and including a plurality of flow through channels;
• and
• a liquid source that provides a liquid through the manifold, the filter, the liquid chamber under pressure sufficient to jet individual streams of the liquid from the array of nozzles.