Liquid ejection head and recording apparatus

A page wide type liquid ejection head comprising a plurality of element substrates being arranged in the liquid ejection head, each of the element substrates having an ejection port for ejecting liquid, a pressure chamber equipped in the inside thereof with an energy generating element which generates energy for ejecting liquid, a chamber supply flow path for supplying liquid to the pressure chamber and a chamber recovery flow path for recovering liquid from the pressure chamber, the liquid ejection head comprising:

• in an element substrate supply flow path for supplying liquid to the element substrates, a filter chamber having a filter for catching foreign objects contained in liquid, in operation, the filter being arranged to intersect a vertical direction, the liquid being driven to flow upwardly from below relative to the filter to pass through the filter;
• and
• a negative pressure control unit arranged at an upstream side relative to the element substrate and a downstream side relative to the filter chamber so as to maintain the liquid pressure at the downstream side relative to the negative pressure control unit within a predetermined range,
• wherein the negative pressure control unit has a sub tank arranged above the filter chamber, and
• wherein the filter is located at an upstream side of the element substrate.