General Information

Serial #

N/A

Part Number

4

Total Parts

11

AKA

N/A

Patents

N/A

General Description

HEAVY PAPER COVERS ARE LEAD-LINED; FABRIC TAPED EDGES; METAL CLOSURES. PT FILM SHEETS; PT PAPER INNER ENVELOPE.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

27.1 cm

Width

21.1 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Medical Technology

Category

Radiology

Sub-Category

N/A

Manufacturer

AKA

Kodak

Country

United States of America

State/Province

New York

City

Rochester

Context

Country

North America

State/Province

Unknown

Period

THIS TYPE OF EXPOSURE HOLDER USED C.1930S- 1950S, AND POSSIBLY LATER.

Canada

Unknown

Function

USED TO HOLD AND PROTECT PREPARED X-RAY FILM BEFORE, AND IN SOME APPLICATIONS DURING, EXPOSURE WITHIN A CASSETTE.

Technical

EXPOSURE HOLDERS WERE AVAILABLE WITH AND WITHOUT LEAD BACKING. WHEN USED WITH A FILM CASSETTE THE LEAD FOIL, IN DIRECT CONTACT WITH A SHEET OF X-RAY FILM, INCREASES THE PHOTOGRAPHIC ACTION ON THE FILM; ABSORBS LONGER WAVELENGTH SCATTERED RADIATION; & INTENSIFIES PRIMARY RADIATION. (REF.1) BLACK PAPER INSIDE THE FOLDER PROTECTS THE FILM AND WAS LEFT ON UNLESS/UNTIL FILM WAS LOADED IN CASSETTE W. SCREENS.

Area Notes

Unknown

Details

Markings

"EASTMAN/ X-RAY FILM/ EXPOSURE HOLDER/ LEAD BACKED/ 8x10 IN./ (20.3 X 25.4 CM)/ TRADE MARK REG. U.S. PAT. OFF. MADE IN ROCHESTER, N.Y., U.S.A. BY/ EASTMAN KODAK COMPANY" printed in black on front; "TUBE SIDE THIS SIDE UP" and grid printed in black on reverse. Paper label applied to front reads "SOLE IMPORTER INTO CANADA/ CANADIAN KODAK CO., LIMITED/ TORONTO"

Missing

N/A

Finish

BLUE-GREY PAPER EXTERIOR; BLACK INTERIOR.

Decoration

N/A