Patent US2250417A successfully refreshed from Google Patents.
US4345262A
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Ink jet recording method
Assignee: Canon Inc
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Filing: 1980-02-07
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Granted: 1982-08-17
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Expires: 2000-02-07
Abstract
Abstract An ink jet recording method which comprises contacting or bringing closer an electro-thermal transducer with or to a recording liquid in an operating chamber having a discharge orifice, introducing into the electrothermal transducer an input pulse signal with its pulse width being in a range of from 0.1 μsec. to 500 μsec., said input pulse signal being introduced in such a manner that its input cycle becomes at least three times as large as said pulse width, discharging and sputtering said recording liquid from said discharge orifice in the form of fine droplet in accordance with operating force developed within said operating chamber, and effecting image recording on the surface of a recording medium with the liquid droplets.
Inventors
- 👤 Yoshiaki Shirato
- 👤 Yasushi Takatori
- 👤 Toshitami Hara
- 👤 Yukuo Nishimura
- 👤 Michiko Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:29
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J2/045; B41J2/04501; B41J2/0458; B41J2/04588; B41J2/04595; H; H04; H04N; H04N1/00; H04N1/40; H04N1/40025
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
129 words
An ink jet recording method which comprises: (a) contacting or bringing closer an electro-thermal transducer with or to a recording liquid in an operating chamber having a discharge orifice; (b) introducing into the electro-thermal transducer an input pulse signal with its pulse width being in a range of from 0.1 μsec. to 500 μsec., said input pulse signal being introduced in such a manner that its input cycle becomes at least three times as large as said pulse width; (c) discharging said recording liquid from said discharge orifice in the form of a fine droplet in accordance with the operating force developed by the input of said pulse signal within said operating chamber; and (d) effecting image recording on the surface of a recording medium with the liquid droplets.
Claim 2
Dependent Claim
129 words
An ink jet recording method which comprises: (a) contacting or bringing closer an electro-thermal transducer with or to a recording liquid in an operating chamber having a discharge orifice; (b) introducing into the electro-thermal transducer an input pulse signal with its pulse width being in a range of from 0.1 μsec. to 500 μsec., said input pulse signal being introduced in such a manner that its input cycle becomes at least three times as large as said pulse width; (c) discharging said recording liquid from said discharge orifice in the form of a fine droplet in accordance with the operating force developed by the input of said pulse signal within said operating chamber; and (d) effecting image recording on the surface of a recording medium with the liquid droplets.
Claim 3
Dependent Claim
23 words
The ink jet recording method as set forth in claim 1, wherein the input pulse signal is introduced in accordance with recording informations.
Claim 4
Dependent Claim
23 words
The ink jet recording method as set forth in claim 1, wherein the input pulse signal is in the form of square wave.
Claim 5
Dependent Claim
20 words
The ink jet recording method as set forth in claim 1, wherein said electro-thermal transducer has a heat generating resistor.
Claim 6
Dependent Claim
69 words
The ink jet recording method as set forth in claim 1, wherein the recording is effected with a space interval between the discharge orifice and the surface of the recording medium being maintained at a value of √S (where S in an area of the discharge orifice) or above, but not exceeding a value which causes the recording liquid droplet as discharged to be broken off during its flight.
Claim 7
Dependent Claim
128 words
An ink jet recording method which comprises: (a) contacting or bringing closer an electro-thermal transducer with or to a recording liquid in an operating chamber having a discharge orifice; (b) introducing into the electro-thermal transducer an input pulse signal with its pulse width being in a range from 0.3 μsec. to 100 μsec., said input pulse signal being introduced in such a manner that its input cycle becomes at least three times as large as said pulse width; (c) discharging said recording liquid from said discharge orifice in the form of a fine droplet in accordance with the operating force developed by the input of said pulse signal within said operating chamber; and (d) effecting image recording on the surface of a recording medium with the liquid droplets.
Claim 8
Dependent Claim
128 words
An ink jet recording method which comprises: (a) contacting or bringing closer an electro-thermal transducer with or to a recording liquid in an operating chamber having a discharge orifice; (b) introducing into the electro-thermal transducer an input pulse signal with its pulse width being in a range from 0.3 μsec. to 100 μsec., said input pulse signal being introduced in such a manner that its input cycle becomes at least three times as large as said pulse width; (c) discharging said recording liquid from said discharge orifice in the form of a fine droplet in accordance with the operating force developed by the input of said pulse signal within said operating chamber; and (d) effecting image recording on the surface of a recording medium with the liquid droplets.
Claim 9
Dependent Claim
23 words
The ink jet recording method as set forth in claim 6, wherein the input pulse signal is introduced in accordance with recording informations.
Claim 10
Dependent Claim
23 words
The ink jet recording method as set forth in claim 6, wherein the input pulse signal is in the form of square wave.
Claim 11
Dependent Claim
20 words
The ink jet recording method as set forth in claim 6, wherein said electro-thermal transducer has a heat generating resistor.
Claim 12
Dependent Claim
68 words
The ink jet recording method as set forth in claim 6, wherein the recording is effected with a space interval between the orifice and the surface of the recording medium being maintained at a value of √S (where S is an area of the discharge orifice) or above, but not exceeding a value which causes the recording liquid droplet as discharged to be broken off during its flight.
Claim 13
Dependent Claim
129 words
An ink jet recording method which comprises: (a) contacting or bringing closer an electro-thermal transducer with or to a recording liquid in an operating chamber having a discharge orifice; (b) introducing into the electro-thermal transducer an input pulse signal with its pulse width being in a range of from 1 μsec. to 30 μsec., said input pulse signal being introduced in such a manner that its input cycle becomes at least three times as large as said pulse width; (c) discharging said recording liquid from said discharge orifice in the form of a fine droplet in accordance with the operating force developed by the input of said pulse signal within said operating chamber; and (d) effecting image recording on the surface of a recording medium with the liquid droplets.
Claim 14
Dependent Claim
129 words
An ink jet recording method which comprises: (a) contacting or bringing closer an electro-thermal transducer with or to a recording liquid in an operating chamber having a discharge orifice; (b) introducing into the electro-thermal transducer an input pulse signal with its pulse width being in a range of from 1 μsec. to 30 μsec., said input pulse signal being introduced in such a manner that its input cycle becomes at least three times as large as said pulse width; (c) discharging said recording liquid from said discharge orifice in the form of a fine droplet in accordance with the operating force developed by the input of said pulse signal within said operating chamber; and (d) effecting image recording on the surface of a recording medium with the liquid droplets.
Claim 15
Dependent Claim
23 words
The ink jet recording method as set forth in claim 11, wherein the input pulse signal is introduced in accordance with recording informations.
Claim 16
Dependent Claim
23 words
The ink jet recording method as set forth in claim 11, wherein the input pulse signal is in the form of square wave.
Claim 17
Dependent Claim
20 words
The ink jet recording method as set forth in claim 11, wherein said electro-thermal transducer has a heat generating resistor.
Claim 18
Dependent Claim
68 words
The ink jet recording method as set forth in claim 11, wherein the recording is effected with a space interval between the orifice and the surface of the recording medium being maintained at a value of √S (where S is an area of the discharge orifice) or above, but not exceeding a value which causes the recording liquid droplet as discharged to be broken off during its flight.
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) | 1985-08-16 | 1986-02-15 | 1986-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-16 | 1990-02-15 | 1990-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-16 | 1994-02-15 | 1994-08-17 | $7700.00 | Window Closed / Lapsed |