INTEGRATED THERMAL INK JET PRINTHEAD AND METHOD OF MANUFACTURE

We describe an integrated thermal ink jet printhead and manufacturing process therefor which includes the successive build-up of an orifice plate (18), a first barrier layer (20), heater resistors (22), a second barrier layer (30), and an ink reservoir-defining layer (38) on top of a reusable or &qu...

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Bibliographic Details
Main Authors BHASKAR ELDURKAR V, LEBAN MARZIO A
Format Patent
LanguageEnglish
Korean
Published 25.09.1991
Edition5
Subjects
BASIC ELECTRIC ELEMENTS
CORRECTION OF TYPOGRAPHICAL ERRORS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:We describe an integrated thermal ink jet printhead and manufacturing process therefor which includes the successive build-up of an orifice plate (18), a first barrier layer (20), heater resistors (22), a second barrier layer (30), and an ink reservoir-defining layer (38) on top of a reusable or "dummy" substrate (10). Lead-in conductors (24,26,28) are formed integral with the heater resistors (22) by controlling the cross-sectional areas of these components, and openings (44,46) (passageways) are formed between ink reservoirs (40,42) and the orifice plate (18) to provide for ink flow under control of the heater resistors (22). The dummy substrate (10) is stripped away from the adjacent orifice plate (18), and the ink reservoir defining layer (38) may be secured to an ink supply tank (48) which supplies ink to the individual ink reservoirs (40,42). Thus, the orifice plate (18), heater resistors (22) and ink flow paths (44,46) of the printhead are self aligned, and the heater resistors (22) are removed or displaced from direct cavitational forces from ink ejected from the orifice plate (18).
Bibliography:Application Number: KR19880016791