Patent ID: 11926157
Assignee: FUNAI ELECTRIC CO., LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A fluid ejection head for a fluid jet ejection device comprising,
a silicon substrate containing at least one array of fluid ejectors deposited thereon,
at least one fluid supply via etched through the silicon substrate adjacent to the at least one array of fluid ejectors,
a flow feature layer attached to the silicon substrate, the flow feature layer containing at least one array of fluid chambers and fluid flow channels corresponding the at least one array of fluid ejectors configured for ejecting fluid provide fluid from the at least one fluid supply via to fluid chambers, wherein at least a portion of the flow feature layer comprises an attachment surface having a roughened surface area with improved surface adhesion characteristics, and
a nozzle plate containing nozzle holes laminated to the flow feature layer to provide the fluid ejection head.