INK JET PRINTING HEAD

Japanese Patent JP3699175

B2

PROBLEM TO BE SOLVED: To make the structure of an ink jet printing head compact to enable high-grade printing by providing an ink sump, a plurality of individual ink emitting chambers having the ink emitting elements provided in the respective chambers arranged along the upper surface of the ink sump and the first outer end edge provided along the outer periphery thereof.
SOLUTION: Windows 22, 24 pierce a flexible circuit 18 to expand and are used in order to easily connect the other end of conductive lines to the electrodes of a silicon substrate having heater resistors. A sealant is sealed in the windows 22, 24 to protect the lower layer parts of the lines and the substrate. In a printing cartridge 10, the flexible circuit 18 is bent over the rear edge of the nose of the printing cartridge 10 to expand by the quantity almost half the length of the rear end 25 of the nose. This suspended part of the flexible circuit 18 is required in order to draw around the conductive lines connected to the electrodes of the substrate through the window 22. Contact pads 20 are arranged to the flexible circuit 18 fixed to a wall.

Brian jay keef
May Von Ho
Kenice Jay Coolian
Stephen W. Steinfield
Winthrop Dee Childers
Ellen Earl Tappon
Kenny E Truba
Teri I Chapman
William Earl Knight
Jules G. Moritz Third

JP25795095A

September 28, 2005

October 04, 1995

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HEWLETT-PACKARD COMPANY

B41J2/175; B41J2/05; B41J2/14; B41J2/16; G01D15/18; (IPC1-7): B41J2/05; B41J2/175; G01D15/18

JP6238904A
JP6023997A
JP5116303A

Masaki Goto
Yoshio Matsuda

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