EP0390198A2
Expired / Lapsed
EP
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An ink jet recording apparatus
Assignee: Canon Inc
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Filing: 1990-03-30
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Granted: —
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Expires: 2010-03-30
Abstract
Abstract An ink jet recording apparatus includes a recording head (1) having ink discharging portions (2,4,5) for discharging ink and an ink chamber (3) for supplying the ink to the discharging portions (2,4) in accordance with discharging of the ink by the discharging portions (2,4,5); a plurality of ink supply ports (6A,6B) for supplying the ink to the ink chamber (3); ink supplying systems for supplying the ink through the ink supplying ports (6A,6B); a plurality of temperature detector (8A,8B) for detecting temperatures of the recording head (1) at different positions; a controller, responsive to the temperature detectors (8A,8B), for controlling supply of the ink through the ink supply ports (6A,6B) and by the ink supplying systems.
Inventors
- 👤 Toshiaki Hirosawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 13:46
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/195; B41J2/135; B41J2/145; B41J2/155; B41J2/14; B41J2002/14379; B41J2202/00; B41J2202/01; B41J2202/08; B41J2202/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
An ink jet recording apparatus, comprising: a recording head having ink discharging portions for discharging ink and an ink chamber for supplying the ink to the discharging portions in accordance with discharging of the ink by the discharging portions; a plurality of ink supply ports for supplying the ink to the ink chamber; ink supplying means for supplying the ink through said ink supplying ports; a plurality of temperature detecting means for detecting temperatures of said recording head at different positions; control means, responsive to said temperature detecting means, for controlling supply of the ink through said ink supply ports and by said ink supplying means.
Claim 2
Dependent Claim
106 words
An ink jet recording apparatus, comprising: a recording head having ink discharging portions for discharging ink and an ink chamber for supplying the ink to the discharging portions in accordance with discharging of the ink by the discharging portions; a plurality of ink supply ports for supplying the ink to the ink chamber; ink supplying means for supplying the ink through said ink supplying ports; a plurality of temperature detecting means for detecting temperatures of said recording head at different positions; control means, responsive to said temperature detecting means, for controlling supply of the ink through said ink supply ports and by said ink supplying means.
Claim 3
Dependent Claim
22 words
An ink jet recording apparatus according to Claim 1, wherein the ink supply through each of said ink supply ports is on-off-controlled.
Claim 4
Dependent Claim
29 words
An apparatus according to Claim 1, wherein the supply of the ink through each of said ink supply ports is changed continuously in response to said temperature detecting means.
Claim 5
Dependent Claim
41 words
An apparatus according to Claim 1, wherein each of said discharging portions includes an ink discharging outlet, an ink passage communicating with the ink discharging outlet and with said ink chamber and a heat generating element disposed in the ink passage.
Claim 6
Dependent Claim
27 words
An apparatus according to Claim 1, wherein said discharging portions are arranged corresponding to a width of a recording material which is faced to the discharging portions.
Claim 7
Dependent Claim
23 words
An apparatus according to Claim 1, wherein the supply of the ink is controlled by a valve provided in said ink supplying means.
Claim 8
Dependent Claim
17 words
An apparatus according to Claim 6, wherein said valve is in the form of a solenoid valve.
Claim 9
Dependent Claim
22 words
An apparatus according to Claim 1, wherein said ink supplying means includes a pump for supplying the ink and/or circulating the ink.
Claim 10
Dependent Claim
13 words
An apparatus according to Claim 1, wherein said control means includes memory means.
Claim 11
Dependent Claim
79 words
An ink jet recording apparatus, comprising: a recording head including heat generating elements for generating heat energy contributable to discharge ink, ink passages corresponding to the heat generating elements, and an ink chamber communicating with the ink passages; a plurality of supply pipes communicating with the ink chamber; a plurality of temperature sensors for detecting temperatures of said recording head at different positions; control means, responsive to said temperature sensors, for selectively supplying the ink through said ink passages.
Claim 12
Dependent Claim
79 words
An ink jet recording apparatus, comprising: a recording head including heat generating elements for generating heat energy contributable to discharge ink, ink passages corresponding to the heat generating elements, and an ink chamber communicating with the ink passages; a plurality of supply pipes communicating with the ink chamber; a plurality of temperature sensors for detecting temperatures of said recording head at different positions; control means, responsive to said temperature sensors, for selectively supplying the ink through said ink passages.
Claim 13
Dependent Claim
15 words
An apparatus according to Claim 10, further comprising valves associated with said ink supply pipes.
Claim 14
Dependent Claim
12 words
An apparatus according to Claim 11, wherein the valves are solenoid valves.
Claim 15
Dependent Claim
18 words
An apparatus according to Claim 10, wherein said control means controls valves associated with said ink supply pipes.
References Cited (Backward Citations)
No citation records indexed.
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