Thermal ink jet printhead with stepped nozzle face and method of

Details Thermal ink jet printhead with stepped nozzle face and method of Thermal ink jet printhead with stepped nozzle face and method of

1990-09-04

1991-10-15

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

156645, 298901, 346 11, B41J 205

Patent

active

050578537

ABSTRACT:
A thermal ink jet printhead and method of batch production thereof is disclosed. Each printhead has a plurality of nozzles in a stepped nozzle face that are obtained by a two step dicing operation. The printheads being formed by aligning and bonding an anisotropically etched silicon wafer containing a plurality of sets of channel grooves to a silicon wafer containing a plurality of linear arrays of heating elements and addressing electrodes over which a thick film layer is deposited and photopatterned to expose the heating elements and electrode terminals and to remove the areas parallel to and a predetermined distanace from the heating element arrays, thus photodelineating the portion of the thick film layer between the heating elements and the nozzles. The mated wafer sandwiches the thick film layer, and first dicing cutting severs the etch wafer and notches the wafer with the heating elements, forming a nozzle face containing the nozzle. The first dicing cut is made at a location where the thick film layer has been etch removed, thus eliminating the need to dice it, thereby preventing the formation of burrs which affect droplet directionality.

REFERENCES:
patent: 4532572 (1988-01-01), Hawkins et al.
patent: 4638337 (1987-01-01), Torpey et al.
patent: 4774530 (1988-09-01), Hawkins
patent: 4878992 (1989-11-01), Campanelli

Affiliated with

Also associated with

Rating

Thermal ink jet printhead with stepped nozzle face and method of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermal ink jet printhead with stepped nozzle face and method of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal ink jet printhead with stepped nozzle face and method of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-993933