EP0625424A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ink cartridge, ink eject unit having same and ink jet apparatus having ink jet unit
Assignee: Canon Inc
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Filing: 1994-05-24
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Granted: —
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Expires: 2014-05-24
Abstract
Abstract An ink jet unit (iju) includes an ink jet head for ejecting ink; an ink cartridge (6000) for containing ink (6009) to be supplied to the ink jet head; an ink supply member (2200) for introducing the ink (6009) from the ink cartridge (6000), provided in the ink jet head; a negative pressure generating material (6003) in the ink cartridge (6000); an opening (6002) for permitting contact between the negative pressure generating material (6003) and in the ink supply member (2200); wherein a gap is formed in the opening (6002) when the ink supply member (2200) is in contact with the negative pressure generating material (6003).
Inventors
- 👤 Eiichiro Shimizu
- 👤 Masami Ikeda
- 👤 Naohito Asai
- 👤 Tsutomu Abe
- 👤 Toshio Kashino
- 👤 Masahiko Higuma
- 👤 Hitoshi Sugimoto
- 👤 Hiroki Tajima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 15:16
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/17556; B41J2/17513; B41J2/1752; B41J2/17523; B41J2/17526
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
An ink jet unit comprising: an ink jet head for ejecting ink; an ink cartridge for containing ink to be supplied to said ink jet head; an ink supply member for introducing the ink from said ink cartridge, provided in said ink jet head; a negative pressure generating material in said ink cartridge; an opening for permitting contact between said negative pressure generating material and in said ink supply member; wherein a gap is formed in said opening when said ink supply member is in contact with said negative pressure generating material.
Claim 2
Dependent Claim
49 words
An ink jet unit according to Claim 1, wherein said ink supply member is provided with a recess, which is located adjacent an end of said ink supply member so as to be located in said ink cartridge when the ink jet head and said ink cartridge are connected.
Claim 3
Dependent Claim
46 words
An ink jet unit according to Claim 1, further comprising press-contact member which is between the gap and an ambience when the ink jet head and the ink cartridge are connected, said press-contact member is provided in either of said ink jet head or ink cartridge.
Claim 4
Dependent Claim
22 words
An ink jet unit according to Claim 3, wherein said press-contact member elastically deforms more than a material constituting said ink cartridge.
Claim 5
Dependent Claim
23 words
An ink jet unit according to Claim 1, wherein a bubble is formed in the ink using thermal energy to eject the ink.
Claim 6
Dependent Claim
104 words
An ink cartridge for supplying ink to an ink jet head, comprising: an ink jet unit including an ink jet head for ejecting ink; an ink cartridge for containing ink to be supplied to said ink jet head; an ink supply member for introducing the ink from said ink cartridge, provided in said ink jet head; a negative pressure generating material in said ink cartridge; an opening for permitting contact between said negative pressure generating material and in said ink supply member; wherein a gap is formed in said opening when said ink supply member is in contact with said negative pressure generating material.
Claim 7
Dependent Claim
113 words
An ink jet apparatus comprising: an ink jet unit including an ink jet head for ejecting ink; an ink cartridge for containing ink to be supplied to said ink jet head; an ink supply member for introducing the ink from said ink cartridge, provided in said ink jet head; a negative pressure generating material in said ink cartridge; an opening for permitting contact between said negative pressure generating material and in said ink supply member; wherein a gap is formed in said opening when said ink supply member is in contact with said negative pressure generating material; a carriage for detachably carrying said ink jet head unit; and means for moving said carriage.
References Cited (Backward Citations)
No citation records indexed.
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