US4920361A
Expired / Lapsed
US
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Image recording method and apparatus therefor
Assignee: Canon Inc
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Filing: 1988-06-24
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Granted: 1990-04-24
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Expires: 2008-06-24
Abstract
Abstract An image recording method and an image recording apparatus using an ink which is substantially non-adhesive but can be imparted with an adhesiveness when subjected to a pH change. In the image recording method, the ink is subjected to a pattern of pH change to be provided with an adhesive pattern, which is then transferred to a recording medium, such as plain paper, directly or by the medium of an intermediate transfer medium to form an ink pattern corresponding to the pH change pattern.
Inventors
- 👤 Kohzoh Arahara
- 👤 Hiroshi Fukumoto
- 👤 Toshiya Yuasa
- 👤 Toshikazu Ohnishi
- 👤 Fumitaka Kan, deceased
- 👤 Hiroshi Tanioka
- 👤 Norihiko Koizumi
- 👤 Noboru Tohyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:40
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38207; B41C; B41C1/00; B41C1/10; B41C1/105
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
An image recording method, comprising: providing an ink which is substantially non-adhesive and capable of being imparted with an adhesiveness when subjected to a pH change; causing a pattern of pH change corresponding to a given image signal on a layer of said ink formed on an ink-carrying member to form an adhesive pattern of the ink corresponding to the image signal; and transferring the adhesive pattern of the ink to a transfer-receiving medium to form thereon an ink pattern corresponding to the adhesive pattern.
Claim 2
Dependent Claim
85 words
An image recording method, comprising: providing an ink which is substantially non-adhesive and capable of being imparted with an adhesiveness when subjected to a pH change; causing a pattern of pH change corresponding to a given image signal on a layer of said ink formed on an ink-carrying member to form an adhesive pattern of the ink corresponding to the image signal; and transferring the adhesive pattern of the ink to a transfer-receiving medium to form thereon an ink pattern corresponding to the adhesive pattern.
Claim 3
Dependent Claim
44 words
A method according to claim 1, wherein said ink comprises a fluid ink capable of forming a fluid layer, and the ink is formed into a layer on the ink-carrying member and then said pattern of pH change is caused on the ink layer.
Claim 4
Dependent Claim
27 words
A method according to claim 1, wherein said pattern of pH change is caused by supplying a liquid to the ink layer formed on the ink-carrying member.
Claim 5
Dependent Claim
13 words
A method according to claim 3, wherein said liquid is an electron acceptor.
Claim 6
Dependent Claim
13 words
A method according to claim 3, wherein said liquid is an electron donor.
Claim 7
Dependent Claim
32 words
A method according to claim 1, wherein said transfer-receiving medium comprises an intermediate transfer medium, and the ink pattern formed on the intermediate transfer medium is then transferred to a recording medium.
Claim 8
Dependent Claim
44 words
A method according to claim 6, wherein said ink comprises a fluid ink capable of forming a fluid layer, and the ink is formed into a layer on the ink-carrying member and then said pattern of pH change is caused on the ink layer.
Claim 9
Dependent Claim
27 words
A method according to claim 6, wherein said pattern of pH change is caused by supplying a liquid to the ink layer formed on the ink-carrying member.
Claim 10
Dependent Claim
13 words
A method according to claim 8, wherein said liquid is an electron acceptor.
Claim 11
Dependent Claim
13 words
A method according to claim 8, wherein said liquid is an electron donor.
Claim 12
Dependent Claim
40 words
A method according to claim 3 or 6, wherein said electron acceptor or electron donor comprises an acidic or alkaline liquid, and the acidic or alkaline liquid is patternwise supplied to the ink layer by jetting it from a nozzle.
Claim 13
Dependent Claim
47 words
A method according to claim 1, wherein said ink comprises an ink not having a fluidity, and said pattern of pH change is caused on the surface of an ink roll which has preliminarily been formed by disposing a layer of said ink on the ink-carrying member.
Claim 14
Dependent Claim
117 words
An image recording apparatus, comprising: an ink-carrying member moved along an ink contact position for carrying thereon a layer of an ink which is substantially non-adhesive but capable of being imparted with an adhesiveness when subjected to a pH change; a transfer-receiving medium moved along the ink contact position so as to contact the ink layer formed on the ink-carrying member at the ink contact position; and means for supplying a pH modifier to the ink layer to cause a pattern of pH change on the ink layer; whereby a part of the ink on the ink-carrying member imparted with an adhesiveness corresponding to the pattern of the pH change is selectively transferred to the transfer-receiving medium.
Claim 15
Dependent Claim
117 words
An image recording apparatus, comprising: an ink-carrying member moved along an ink contact position for carrying thereon a layer of an ink which is substantially non-adhesive but capable of being imparted with an adhesiveness when subjected to a pH change; a transfer-receiving medium moved along the ink contact position so as to contact the ink layer formed on the ink-carrying member at the ink contact position; and means for supplying a pH modifier to the ink layer to cause a pattern of pH change on the ink layer; whereby a part of the ink on the ink-carrying member imparted with an adhesiveness corresponding to the pattern of the pH change is selectively transferred to the transfer-receiving medium.
Claim 16
Dependent Claim
62 words
An apparatus according to claim 13, wherein said pH modifier-supplying means comprises a device which includes a nozzle and a heat-generating element disposed therein, and is capable of bubbling a pH modifier disposed in the nozzle due to the heat generated by the heat-generating element corresponding to a given image-signal to supply the pH modifier from the nozzle to the ink layer.
Claim 17
Dependent Claim
48 words
An apparatus according to claim 13, wherein said transfer-receiving medium constitutes an intermediate transfer medium so that the ink pattern formed thereon is further transferred to a recording medium disposed opposite to the intermediate transfer medium at an ink image transfer position downstream from the ink contact position.
Claim 18
Dependent Claim
61 words
An apparatus according to claim 15, wherein said pH modifier-supplying means comprises a device which includes a nozzle and a heat-generating element disposed therein, and is capable of bubbling a pH modifier disposed in the nozzle due to heat generated by the heat-generating element corresponding to a given image-signal to supply the pH modifier from the nozzle to the ink layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |