US Patent No. 9,242,471

METHOD AND APPARATUS FOR MANUFACTURING LIQUID CONTAINER


Patent No. 9,242,471
Issue Date January 26, 2016 
Title Method And Apparatus For Manufacturing Liquid Container
Inventorship Isamu Yoneda, Kawasaki (JP)
Akira Shiba, Machida (JP)
Ryota Yamada, Chiba (JP)
Assignee CANON KABUSHIKI KAISHA, Tokyo (JP)

Claim of US Patent No. 9,242,471

1. A method for manufacturing a liquid container in which a negative pressure generating member is contained in a first recessed
portion separated from a second recessed portion by a partition wall with a communication portion formed therein, the method
comprising:
a compression step of pressing, before the negative pressure generating member is placed in the first recessed portion, a
plurality of outer surfaces of the negative pressure generating member so that the negative pressure generating member becomes
smaller than an opening of the first recessed portion, the plurality of outer surfaces of the negative pressure generating
member including a first outer surface which is pressed by a first compression member and which is to contact a surface of
the partition wall positioned in the first recessed portion and a second outer surface which is pressed by a second compression
member and which is to contact an inner surface of the first recessed portion lying opposite the partition wall; and

a placing step of placing the negative pressure generating member in the first recessed portion while releasing the pressure
exerted on the first outer surface by the first compression member and while maintaining the pressure exerted on the second
outer surface by the second compression member so that the negative pressure generating member is positionally biased toward
the partition wall, and after the negative pressure generating member is placed in the first recessed portion, releasing the
pressure exerted on the second outer surface by the second compression member.