Patent US3596236A successfully refreshed from Google Patents.
Patent US4045251A successfully refreshed from Google Patents.
EP0640484A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ink filling method and apparatus for ink cartridge
Assignee: Canon Inc
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Filing: 1994-08-30
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Granted: —
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Expires: 2014-08-30
Abstract
Abstract An ink filling method for filling an ink cartridge with ink to be supplied to a recording head for ejecting ink includes providing an ink cartridge having a negative pressure producing material accommodating portion (4) and an ink accommodating portion (6), the negative pressure producing material (3) accommodating portion accommodating a negative pressure producing material (3) and being provided with an air vent (10), and the ink accommodating portion being substantially hermetically sealed except for fluid communication with the negative pressure producing material accommodating portion (4), and accommodating directly the ink to be supplied to the recording head, the ink cartridge further includes a partition wall (5) between the negative pressure producing material accommodating portion and the ink accommodating portion, the partition wall (5) being provided with a gap (8) for permitting formation of meniscus of the ink; and directly injecting the ink into the ink accommodating portion (6).
Inventors
- 👤 Higuma C/O Canon Kabushiki Kaisha Masahiko
- 👤 Ikeda C/O Canon Kabushiki Kaisha Masami
- 👤 Sugama C/O Canon Kabushiki Kaisha Sadayuki
- 👤 Abe C/O Canon Kabushiki Kaisha Tsutomu
- 👤 Ichinaga C/O Canon Kabushiki Kaisha Hiroyuki
- 👤 Kashino C/O Canon Kabushiki Kaisha Toshio
- 👤 Okazaki C/O Canon Kabushiki Kaisha Takeshi
- 👤 Tajima C/O Canon Kabushiki Kaisha Hiroki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 16:00
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/17513; B41J2/17506; B41J2/17533
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
An ink filling method for filling an ink cartridge with ink to be supplied to a recording head for ejecting ink, comprising: providing the ink cartridge having a negative pressure producing material accommodating portion and an ink accommodating portion, said negative pressure producing material accommodating portion accommodating a negative pressure producing material and being provided with an air vent, and said ink accommodating portion being substantially hermetically sealed except for fluid communication with said negative pressure producing material accommodating portion, and accommodating directly the ink to be supplied to the recording head, said ink cartridge further includes a partition wall between said negative pressure producing material accommodating portion and said ink accommodating portion, said partition wall being provided with a gap for permitting formation of meniscus of the ink; and directly injecting the ink into said ink accommodating portion.
Claim 2
Dependent Claim
22 words
A method according to Claim 1, wherein during ink injecting operation, the gap takes a topmost position of said ink accommodating portion.
Claim 3
Dependent Claim
22 words
A method according to Claim 1, wherein the ink is injected through an ink injection opening formed in said ink accommodating portion.
Claim 4
Dependent Claim
27 words
A method according to Claim 3, wherein after injection of the ink, the ink injection opening is sealed by a sealing member integral with said ink cartridge.
Claim 5
Dependent Claim
69 words
A method according to Claim 1, wherein the ink is injected by ink injecting means in fluid communication with an ink container for containing the ink to be injected, wherein said ink injection means is inserted through an ink supply port for supplying the ink out of said ink cartridge, into the ink cartridge, and an opening of said ink injection means is projected into said ink accommodating portion.
Claim 6
Dependent Claim
17 words
A method according to Claim 5, wherein said ink injection means penetrates said negative pressure producing material.
Claim 7
Dependent Claim
26 words
A method according to Claim 5, wherein said ink injection means is provided with air discharging means for discharging air out of said ink accommodating portion.
Claim 8
Dependent Claim
26 words
A method according to Claim 5, wherein said ink injection means has an opening for supplying the ink into said negative pressure producing material accommodating portion.
Claim 9
Dependent Claim
204 words
An ink filling apparatus for filling an ink cartridge with ink to be supplied to a recording head for ejecting ink, wherein said ink cartridge has a negative pressure producing material accommodating portion and an ink accommodating portion, said negative pressure producing material accommodating portion accommodating a negative pressure producing material and being provided with an air vent, and said ink accommodating portion being substantially hermetically sealed except for fluid communication with said negative pressure producing material accommodating portion, and accommodating directly the ink to be supplied to the recording head, said ink cartridge further includes a partition wall between said negative pressure producing material accommodating portion and said ink accommodating portion, said partition wall being provided with a gap for permitting formation of meniscus of the ink, said apparatus comprising: an injection member for directly injecting the ink into said ink accommodating portion; and means for supplying the ink to said injection member; wherein said injection member is injectable into the negative pressure producing material accommodating portion, and said injection member is long enough to an end opening thereof is in said ink accommodating portion through the gap, when said injection member is inserted into said ink cartridge through the ink supply port.
Claim 10
Dependent Claim
28 words
An apparatus according to Claim 9, wherein said ink injecting member is provided with a plurality of openings which open to said negative pressure producing material accommodating portion.
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