EP0454155A2
Expired / Lapsed
EP
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Recording method and apparatus
Assignee: Canon Inc
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Filing: 1991-04-26
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Granted: —
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Expires: 2011-04-26
Abstract
Abstract A liquid jet recording method includes applying thermal energy to liquid in a liquid passage (B) to produce film boiling of the liquid to produce a bubble (6); permitting the bubble (6) to communicate with ambience; wherein the liquid passage (B) is not blocked in the communicating step.
Inventors
- 👤 Kazuhiro C/O Canon Kabushiki Kaisha Nakajima
- 👤 Masanori C/O Canon Kabushiki Kaisha Takenouchi
- 👤 Toshiharu C/O Canon Kabushiki Kaisha Inui
- 👤 Yoshihisa C/O Canon Kabushiki Kaisha Takizawa
- 👤 Masashi C/O Canon Kabushiki Kaisha Miyagawa
- 👤 Hisao C/O Canon Kabushiki Kaisha Yaegashi
- 👤 Katsuhiro C/O Canon Kabushiki Kaisha Shirota
- 👤 Norio C/O Canon Kabushiki Kaisha Ohkuma
- 👤 Akira C/O Canon Kabushiki Kaisha Asai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 02:47
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14016; B41J2/14032; B41J2/14056; B41J2/1404; B41J2/14088; B41J2/14112; B41J2002/14169; B41J2002/14185; B41J2002/14379; B41J2002/14387; B41J2202/00; B41J2202/01; B41J2202/11
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
44 words
A liquid jet recording method, comprising: applying thermal energy to liquid in a liquid passage to produce film boiling of the liquid to produce a bubble; permitting the bubble to communicate with ambience; wherein the liquid passage is not blocked in the communicating step.
Claim 2
Dependent Claim
35 words
A method according to Claim 1, wherein in the communicating step, the bubble communicates with the ambience under the condition that an internal pressure of the bubble is lower than the pressure of the ambience.
Claim 3
Dependent Claim
26 words
A method according to Claim 1, wherein the bubble communicates with the ambience wherein acceleration of the outlet side end of the bubble is not positive.
Claim 4
Dependent Claim
35 words
A method according to Claim 3, wherein in the communicating step, the bubble communicates with the ambience under the condition that an internal pressure of the bubble is lower than the pressure of the ambience.
Claim 5
Dependent Claim
97 words
A method according to Claim 1, wherein the thermal energy is supplied by a thermal energy generating means, wherein the bubble communicates with the ambience when 1 a / 1 b ≧ 1 is satisfied where 1 a is a distance between an ejection outlet side end of the ejection energy generating means and an ejection outlet side end of the bubble, and 1 b is a distance between that end of the ejection energy generating means which is remote from the ejection outlet and that end of the bubble which is remote from the ejection outlet.
Claim 6
Dependent Claim
53 words
A liquid jet recording method wherein ink is heated to create a bubble which is effective to eject at least a part of the ink, the improvement resides in that the bubble communicates with ambience under the condition that an internal pressure of the bubble is lower than a pressure of the ambience.
Claim 7
Dependent Claim
88 words
A recording apparatus, comprising; a recording head having an ejection energy generating means for heating ink to create a bubble which is effective to eject at least a part of the ink; an ejection outlet for ejecting the ink; a driving circuit for driving said ejection energy generating means so that the bubble communicates with ambience under the condition that an internal pressure of the bubble is lower than a pressure of the ambience; and a platen for supporting a recording material for reception of the liquid ejected.
Claim 8
Dependent Claim
126 words
A recording method using a recording head including an ejection outlet for ejecting ink, a liquid passage communicating with the ejection outlet and an ejection energy generating means for generating thermal energy contributable to ejection of the ink by creation of a bubble in the liquid passage, wherein the bubble communicates with the ambience when 1 a / 1 b ≧ 1 is satisfied where 1 a is a distance between an ejection outlet side end of the ejection energy generating means and an ejection outlet side end of the bubble, and 1 b is a distance between that end of the ejection energy generating means which is remote from the ejection outlet and that end of the bubble which is remote from the ejection outlet.
Claim 9
Dependent Claim
152 words
A recording apparatus including a recording head having an ejection outlet for ejecting ink, a liquid passage communicating with the ejection outlet and ejection energy generating means for generating thermal energy contributable to ejection of the ink by creation of a bubble in the liquid passage; a driving circuit for supplying a signal to said ejection energy generating means so that the bubble communicates with the ambience when 1 a / 1 b ≧ 1 is satisfied where 1 a is a distance between an ejection outlet side end of the ejection energy generating means and up ejection outlet side end of the bubble, and 1 b is a distance between that end of the ejection energy generating means which is remote from the ejection outlet and that end of the bubble which is remote from the ejection outlet; a platen for supporting a recording material for reception of the liquid ejected.
Claim 10
Dependent Claim
88 words
A liquid jet method using a recording head having an ejection outlet for ejecting ink, a liquid passage communicating with the ejection outlet and an ejection energy generating element for generating thermal energy contributable to the ejection of the ink by creation of a bubble in the liquid passage, wherein a first order differential of a movement speed of an ejection outlet side end of the created bubble is negative, when the bubble created by the ejection energy generating means communicates with the ambience through the ejection outlet.
Claim 11
Dependent Claim
116 words
A liquid jet apparatus comprising a recording head having an ejection outlet for ejecting ink, a liquid passage communicating with the ejection outlet and an ejection energy generating element for generating thermal energy contributable to the ejection of the ink by creation of a bubble in the liquid passage, a driving circuit for supplying a signal to the ejection energy generating means so that a first order differential of a movement speed of an ejection outlet side end of the created bubble is negative, when the bubble created by the ejection energy generating means communicates with the ambience through the ejection outlet, and a platen for supporting a recording material for reception of the liquid ejected.
References Cited (Backward Citations)
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