Communications: radio wave antennas – Antennas – With electrical shield
Reexamination Certificate
2005-05-31
2005-05-31
Wong, Don (Department: 2821)
Communications: radio wave antennas
Antennas
With electrical shield
C347S100000
Reexamination Certificate
active
06900774
ABSTRACT:
A first plate member constitutes a part of a main frame of a liquid ejection apparatus. A second plate member is extended from the first plate member such that a first part thereof opposes to a traveling path of a carriage which carries a plurality of liquid containers each provided with an IC chip and a receiving antenna. A transmission antenna is provided on an antenna board. The antenna board is mounted on the first part of the second plate member. The second plate member is formed with a first region which allows the transmission antenna to establish radio communication with the receiving antenna, and a second region which shields radio waves.
REFERENCES:
patent: 6113207 (2000-09-01), Nakano et al.
patent: 6758544 (2004-07-01), Fukano
patent: 6764152 (2004-07-01), Umeda et al.
patent: 2004/0060162 (2004-04-01), Moren
patent: 2002-127391 (2002-08-01), None
Hanamura Osamu
Kawakami Kunio
Koshiishi Osamu
Tanaka Kazuo
A Minh Dieu
Sughrue & Mion, PLLC
Wong Don
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