GB566269A - Improvements in or relating to radiography - Google Patents

Improvements in or relating to radiography

Info

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
Application number
GB1220243A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1220243A priority Critical patent/GB566269A/en
Publication of GB566269A publication Critical patent/GB566269A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01TMEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/02Dosimeters
    • G01T1/08Photographic dosimeters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00Pile receivers
    • B65H31/22Pile 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.
GB1220243A 1943-07-27 1943-07-27 Improvements in or relating to radiography Expired GB566269A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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