EP0444591A2 - Lampe à décharge à vapeur métallique - Google Patents
Lampe à décharge à vapeur métallique Download PDFInfo
- Publication number
- EP0444591A2 EP0444591A2 EP91102795A EP91102795A EP0444591A2 EP 0444591 A2 EP0444591 A2 EP 0444591A2 EP 91102795 A EP91102795 A EP 91102795A EP 91102795 A EP91102795 A EP 91102795A EP 0444591 A2 EP0444591 A2 EP 0444591A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- iron
- discharge lamp
- vapor discharge
- thallium
- metal vapor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 title claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 77
- 229910052742 iron Inorganic materials 0.000 claims abstract description 38
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052716 thallium Inorganic materials 0.000 claims abstract description 18
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 15
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 claims abstract description 15
- -1 thallium halide Chemical class 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims 1
- 229910052736 halogen Inorganic materials 0.000 claims 1
- 150000002367 halogens Chemical class 0.000 claims 1
- 238000001228 spectrum Methods 0.000 abstract description 12
- 238000000151 deposition Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000003973 paint Substances 0.000 description 7
- 239000010408 film Substances 0.000 description 5
- 239000000976 ink Substances 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 238000000016 photochemical curing Methods 0.000 description 4
- 238000006552 photochemical reaction Methods 0.000 description 4
- 238000001723 curing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 2
- 229910001507 metal halide Inorganic materials 0.000 description 2
- 150000005309 metal halides Chemical class 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NDKKKEPYKOOXLG-UHFFFAOYSA-L mercury(1+);diiodide Chemical compound [Hg]I.[Hg]I NDKKKEPYKOOXLG-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- CMJCEVKJYRZMIA-UHFFFAOYSA-M thallium(i) iodide Chemical compound [Tl]I CMJCEVKJYRZMIA-UHFFFAOYSA-M 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
Definitions
- This invention relates to a metal vapor discharge lamp to be employed for photochemical reactions or curing of paints and inks.
- Ultraviolet rays are often used for inducing photochemical reactions or curing paints and inks, and those having a wavelength in the range of about 280 to 400 nm are useful for such purposes.
- High-pressure mercury vapor discharge lamps have conventionally been used as sources of such ultraviolet rays.
- the light emitted from a high-pressure mercury vapor discharge lamp consists of a multiplicity of luminescent line spectra, and each spectrum distributes over a considerably broad range of wavelength. Accordingly, it is not efficient to use the high-pressure mercury vapor discharge lamp to achieve photochemical reactions or curing of paints, in which the effective wavelength range is about 280 to 400 nm as described above.
- the ultraviolet rays must penetrate through the layer of the material to be cured such as a paint or an ink so that it can completely be cured, it requires a considerable time to achieve the complete curing only with the aid of the luminescent line spectrum of mercury.
- a metal vapor discharge lamp is frequently used, which has an increased quantity of light emission in the effective wavelength range by using a metal halide-filled bulb.
- an iron-filled metal vapor discharge lamp is particularly convenient to achieve curing of paints and inks since it continuously emits ultraviolet rays in the wavelength range of 350 to 400 nm.
- halide of thallium is effective for achieving the above objects, and they made various experiments to accomplish this invention.
- a metal thallium or a thallium halide into the metal vapor discharge lamp having mercury and iron filled therein in such a way that the gram atom number ratio of Tl/Fe may be 1/200 to 1/2, deposition of iron on the internal wall surface of the bulb to form a thin film can be prevented, and thus output of the ultraviolet rays can be maintained for a long time.
- Fig. 1 shows a cross section of a metal vapor discharge lamp
- Fig. 2 shows characteristic curves demonstrating high % output retention achieved according to this invention.
- Fig. 1 shows a metal vapor discharge lamp with a rated power of 4 KW to be used as a light source for curing paints or inks.
- This metal vapor discharge lamp has a tubular quartz bulb 1 with an internal diameter of 22 mm, and a pair of electrodes 2,2 disposed therein to oppose each other with a distance of 250 mm therebetween.
- the bulb 1 has a sealed portion 11 at each end, and a molybdenum foil 3 is sealed therein, which connects the corresponding electrode 2 with an outer lead 4.
- the bulb 1 In the bulb 1 are filled 120 mg of a metal mercury (Hg), 13 mg of mercury iodide (Hg2I2), 3.5 mg of iron (Fe), 1.1 mg of thallium iodide (TlI) and 30 mmHg of xenon gas.
- Hg metal mercury
- Hg2I2 mercury iodide
- Fe iron
- TlI thallium iodide
- the amount of thallium to be incorporated relative to iron is 1/19 in terms of gram atom number ratio.
Landscapes
- Discharge Lamp (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44414/90 | 1990-02-27 | ||
| JP4441490A JPH03250549A (ja) | 1990-02-27 | 1990-02-27 | 金属蒸気放電灯 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0444591A2 true EP0444591A2 (fr) | 1991-09-04 |
| EP0444591A3 EP0444591A3 (en) | 1991-11-06 |
Family
ID=12690845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19910102795 Withdrawn EP0444591A3 (en) | 1990-02-27 | 1991-02-26 | Metal vapour discharge lamp |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0444591A3 (fr) |
| JP (1) | JPH03250549A (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0536577A1 (fr) * | 1991-10-10 | 1993-04-14 | Heraeus Noblelight GmbH | Tube à décharge et commande d'un appareil muni d'un tel tube |
| EP0616357A1 (fr) * | 1993-03-17 | 1994-09-21 | Ushiodenki Kabushiki Kaisha | Lampe à décharge à vapeur métallique |
| CN102292793A (zh) * | 2009-01-26 | 2011-12-21 | 哈利盛东芝照明公司 | 金属卤化物灯 |
| CN102306609A (zh) * | 2010-04-27 | 2012-01-04 | 哈利盛东芝照明公司 | 紫外线照射装置、紫外线照射方法、紫外线照射装置的制造方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5069493B2 (ja) * | 2006-11-02 | 2012-11-07 | ハリソン東芝ライティング株式会社 | 紫外線放電ランプ |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE570606C (de) * | 1930-03-04 | 1933-02-17 | Siemens Ag | Metalldampfbogenlampe |
| JPS5216887A (en) * | 1975-07-30 | 1977-02-08 | Iwasaki Electric Co Ltd | Metal vapor discharge lamp |
| GB2182486B (en) * | 1985-10-04 | 1990-06-06 | Ushio Electric Inc | Magnesium and iron vapor discharge lamp |
-
1990
- 1990-02-27 JP JP4441490A patent/JPH03250549A/ja active Pending
-
1991
- 1991-02-26 EP EP19910102795 patent/EP0444591A3/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0536577A1 (fr) * | 1991-10-10 | 1993-04-14 | Heraeus Noblelight GmbH | Tube à décharge et commande d'un appareil muni d'un tel tube |
| EP0616357A1 (fr) * | 1993-03-17 | 1994-09-21 | Ushiodenki Kabushiki Kaisha | Lampe à décharge à vapeur métallique |
| US5489819A (en) * | 1993-03-17 | 1996-02-06 | Ushiodenki Kabushiki Kaisha | Method of operating a metallic vapor discharge lamp |
| CN102292793A (zh) * | 2009-01-26 | 2011-12-21 | 哈利盛东芝照明公司 | 金属卤化物灯 |
| CN102306609A (zh) * | 2010-04-27 | 2012-01-04 | 哈利盛东芝照明公司 | 紫外线照射装置、紫外线照射方法、紫外线照射装置的制造方法 |
| CN102306609B (zh) * | 2010-04-27 | 2016-02-17 | 哈利盛东芝照明公司 | 紫外线照射装置、紫外线照射方法、紫外线照射装置的制造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03250549A (ja) | 1991-11-08 |
| EP0444591A3 (en) | 1991-11-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE GB IT NL |
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| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE GB IT NL |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19920507 |