GB566269A - Improvements in or relating to radiography - Google Patents
Improvements in or relating to radiographyInfo
- Publication number
- GB566269A GB566269A GB1220243A GB1220243A GB566269A GB 566269 A GB566269 A GB 566269A GB 1220243 A GB1220243 A GB 1220243A GB 1220243 A GB1220243 A GB 1220243A GB 566269 A GB566269 A GB 566269A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- sensitive
- radiation
- pack
- mask
- 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.)
- Expired
Links
- 238000002601 radiography Methods 0.000 title 1
- 239000002184 metal Substances 0.000 abstract 8
- 229910052751 metal Inorganic materials 0.000 abstract 8
- 230000005855 radiation Effects 0.000 abstract 6
- 150000002739 metals Chemical class 0.000 abstract 3
- 239000011888 foil Substances 0.000 abstract 2
- 230000035699 permeability Effects 0.000 abstract 2
- 229910001369 Brass Inorganic materials 0.000 abstract 1
- 238000005452 bending Methods 0.000 abstract 1
- 239000010951 brass Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/08—Photographic dosimeters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/22—Pile receivers removable or interchangeable
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
566,269. Radiographic packs. DIMSDALE, W. H., and CLARKE, A. E. July 27, 1943, No. 12202. [Class 98 (i)] A sensitive pack for use in detecting and estimating quantities of X- radiation or gamma - radiation, and which permits the effects of such radiation to be distinguished in the developed radiograph from the natural fog density of the sensitive element, comprises a photographic sensitive sheet enclosed in a light-tight package together with a metal mask or masks covering part only of the sensitive sheet and having metal areas of different permeability to the radiation, one area being substantially impermeable thereto. Instead of including the mask or masks in a light-sensitive pack, a cardboard or like cassette containing them may be adapted to receive a packet of film such as a conventional dental radiographic pack. The assembly may be as shown in Fig. 2, wherein a sensitive sheet 1 between sheets of black paper 2 has the mask 3 folded around one edge, and is enclosed in a light-tight paper wrapper 5 having a protective paper sheet 4 and a paper cover sheet 6 which may serve as a label. The sheets 4, 6 may be slit so that on bending the assembly a tab is formed to facilitate tearing off the wrapping, as described in Specification 423,809. The wrapper 5 and sheet 4 may be water-resistant. The mask may be a metal sheet of continuously-varying thickness, or having areas of different thickness, e.g. lead foil folded to provide such areas as shown in Fig. 5 ; or a metal sheet comprising areas of different metals ; or juxtaposed sheets of different metals. It may be located on one face only of the sensitive sheet; or be folded around an edge to make contact with both faces ; or a mask may be provided on each face, the two being in register or not. Two masks made of different metals may be provided, on the same or on opposite sides of the sensitive sheet, one (e.g. of lead) having a low and the other (e.g. copper or brass) having a higher permeability to the radiation. The sensitive sheet may be coated with emulsion on one or both sides. A duplex pack is described comprising two masked sensitive sheets separated by an impermeable metal foil so that the sheets may be exposed separately to the radiation from opposite sides of the pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1220243A GB566269A (en) | 1943-07-27 | 1943-07-27 | Improvements in or relating to radiography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1220243A GB566269A (en) | 1943-07-27 | 1943-07-27 | Improvements in or relating to radiography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB566269A true GB566269A (en) | 1944-12-20 |
Family
ID=10000211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1220243A Expired GB566269A (en) | 1943-07-27 | 1943-07-27 | Improvements in or relating to radiography |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB566269A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1029947B (en) * | 1953-11-04 | 1958-05-14 | Total Foerstner & Co | Device for registration of radiation doses |
| US3443093A (en) * | 1966-07-07 | 1969-05-06 | Eastman Kodak Co | Dental x-ray packet having a uniform overall thickness and method of making same |
-
1943
- 1943-07-27 GB GB1220243A patent/GB566269A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1029947B (en) * | 1953-11-04 | 1958-05-14 | Total Foerstner & Co | Device for registration of radiation doses |
| US3443093A (en) * | 1966-07-07 | 1969-05-06 | Eastman Kodak Co | Dental x-ray packet having a uniform overall thickness and method of making same |
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