Ink-jet printhead and manufacturing process

摘要

An ink-jet printhead and its manufacturing process therefor. The manufacturing process comprises the steps of: providing a substrate; forming a loop-shaped protection layer of a predetermined size over the central region of the substrate, the loop-shaped protection layer defining a predetermined area surrounded thereby; and forming an ink passage by sand blasting through the substrate on the predetermined area so that the ink within the ink cartridge can flow into the ink-jet printhead through the ink passage.Therefore, during the sand blasting process, cracking of the IC chip can be avoided because of the protection by the loop-shaped protection layer.