Claims
- 1. An ink jet apparatus, comprising:
- an ink jet head having a heat generating resistance element, said ink jet head discharging ink droplets by causing a change in a state of an ink by utilizing heat generated by said heat generating resistance element;
- conveying means for conveying a recording medium to be recorded upon in a conveyance direction, so that a predetermined recording image is formed on said recording medium by ink droplets discharged by said ink jet head;
- heat exchanging means for exchanging heat with said head, said heat exchanging means being attached to a side surface of said head where said element is provided;
- heating means for heating said exchanging means, said heating means being a part of said heat exchanging means;
- cooling means for cooling said heat exchanging means;
- temperature detecting means for detecting a temperature of said heat exchanging means; and
- control means for controlling driving of said heating means and said cooling means based on the temperature detected by said temperature detecting means;
- wherein said head to which said heat exchanging means is attached is joined to said apparatus so that said heat exchanging means is positioned at a downstream side in said conveyance direction of said recording medium.
- 2. An apparatus according to claim 1, wherein said temperature detecting means is covered by an insulative member having a heat conductive rate that is less than 1 W/m.degree. K.
- 3. An ink jet recording apparatus, comprising:
- an ink jet head having a heat generating resistance element, said ink jet head discharging ink droplets by causing a change in a state of an ink by utilizing heat generated by said heat generating resistance element, said head being constructed from a plurality of materials having different wetting characteristics;
- conveying means for conveying a recording medium to be recorded upon in a conveyance direction, so that a predetermined recording image is formed on said recording medium by ink droplets discharged by said ink jet head; and
- heat exchanging means for exchanging heat with said head, said heat exchanging means being attached to a side surface of said head;
- wherein said side surface to which said heat exchanging means is attached is a member having a high wetting characteristic, and said heat exchanging means is attached to said apparatus so that said heat exchanging means is positioned at a downstream portion in said conveyance direction of said recording medium.
- 4. An apparatus according to claim 3, wherein said heat exchanging means comprises heating means at a part thereof.
- 5. An apparatus according to claim 4, wherein said heat exchanging means further comprises a fin for promoting a discharge of heat therefrom at a part of said heat exchange means, and said apparatus further comprises blower means for blowing on said fin.
- 6. An apparatus according to claim 5, wherein said heat exchanging means further comprises temperature detecting means for detecting a temperature of said heat exchanging means at a part thereof, and said apparatus further comprises control means for controlling driving of said heating means and said blower means based on the temperature detected by said temperature detecting means.
- 7. An apparatus according to claim 3, wherein said heat generating resistance element is disposed upon a member having a higher wetting characteristic.
Priority Claims (8)
Number |
Date |
Country |
Kind |
63-329478 |
Dec 1988 |
JPX |
|
1-55201 |
Mar 1989 |
JPX |
|
1-55202 |
Mar 1989 |
JPX |
|
1-55203 |
Mar 1989 |
JPX |
|
1-55204 |
Mar 1989 |
JPX |
|
1-56247 |
Mar 1989 |
JPX |
|
1-224654 |
Sep 1989 |
JPX |
|
1-333159 |
Dec 1989 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 07/852,333, filed Mar. 17, 1992, which was a continuation of application Ser. No. 07/458,569, filed Dec. 28, 1989, both now abandoned.
US Referenced Citations (14)
Foreign Referenced Citations (8)
Number |
Date |
Country |
50-4912 |
Jan 1975 |
JPX |
53-42619 |
Nov 1978 |
JPX |
55-5429 |
Feb 1980 |
JPX |
55-6509 |
Feb 1980 |
JPX |
56-9429 |
Mar 1981 |
JPX |
59-123670 |
Jul 1984 |
JPX |
59-138461 |
Aug 1984 |
JPX |
62-55990 |
Nov 1987 |
JPX |
Continuations (2)
|
Number |
Date |
Country |
Parent |
852333 |
Mar 1992 |
|
Parent |
458569 |
Dec 1989 |
|