Optics: measuring and testing – By alignment in lateral direction
Reexamination Certificate
2007-09-07
2009-10-13
Chowdhury, Tarifur R. (Department: 2886)
Optics: measuring and testing
By alignment in lateral direction
Reexamination Certificate
active
07602490
ABSTRACT:
The invention provides a liquid ejecting head alignment apparatus that is used for positional determination and adhesion of nozzle plates and a fixation member, each of the nozzle plates having nozzle openings through which each of a plurality of liquid ejecting heads ejects liquid and further having alignment marks for positional alignment, the fixation member holding the nozzle-plate side of the plurality of liquid ejecting heads. The liquid ejecting head alignment apparatus according to the invention includes: a mask made of a transparent material, the mask having reference marks each of which is aligned with the corresponding alignment mark; a spacer jig that is provided between the fixation member and the mask in such a manner that the reference marks and the alignment marks are opposed to each other with a space being left therebetween, one surface of the spacer jig being in contact with the fixation member; and a bifocal microscope having an optical axis and two optical systems that shares the optical axis, the optical axis being oriented from a face of the mask that is opposite to the spacer jig side thereof toward the alignment mark via the reference mark and the space, one of the optical systems being capable of focusing on the reference mark, and the other thereof being capable of focusing on the alignment mark.
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Goto Kazutoshi
Inaoka Yasuo
Okamuro Takuma
Okumura Motonori
Ota Mutsuhiko
Akanbi Isiaka O
Chowdhury Tarifur R.
Seiko Epson Corporation
Workman Nydegger
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