Printhead with internal microfluidic channels

Abstract

A printhead is provided, where the printhead includes a printing base and a printing chip, the printing base includes a fluid inlet channel, a fluid outlet channel, and a storage slot, and the fluid inlet channel and the fluid outlet channel are communicated with the storage slot; the printing chip is encapsulated on a surface of the printing base, and communicated with the storage slot to form an internal microfluidic channel. The internal microfluidic channel allows old printing liquid to be entirely discharged in one go, reducing the risk of contamination, and making it easier to discharge printing liquid. The internal microfluidic channel has a small holding volume, leading to substantial cost savings; a one-way flow path between the inlet and outlet is established, and the high pressure and rapid flow within the path enhance the fluid discharge rate.

Dependencies are inferred from the claim text.