CHINESE SCIENTIST DEVELOPS PHOTOGRAPHIC EMULSION FOR COLOR MAP REPRODUCTION

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000700020012-4
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 1
• Document Creation Date: December 22, 2016
• Document Release Date: August 23, 2011
• Sequence Number: 12
• Publication Date: October 27, 1951
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/08/23: CIA-RDP80-00809A000700020012-4
SECURITY INFORMATION
CLASSIFICATION CONFIDENTIAL ~ ov f iuE j'dT1 -
CENTRAL INTELLIGENCE AGENCY REPORT
INFORMATION FROM
FOREIGN DOCUMENTS OR RADIO BROADCASTS CD NO.
COUNTRY China
SUBJECT Scientific - Cartography; color process,
HOW
PUBLISHED Daily newspaper
WHERE
PUBLISHED Shanghai
DATE
PUBLISHED 8 Aug 1951
LANGUAGE
THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE NATIONAL OCFENSE
OF THE UNITED STATES WITHIN THE MEANING OF ESPIONAGE ACT SO
U. S. C.. S1 AND SE. AS AMENDED. ITS TRANSMISSION OR THE REVELATION .AH CO By NTLAWENTS. , REPRODV CT-ION OF THIS FO RMH 0312, OHIBITED_ IS PRO-
OF ITS
DATE DIST.p? 7 Oct 1951
NO. OF PAGES 1
SUPPLEMENT TO
REPORT NO.
CHINESE SCIENTIST DEVELOPS
PHOTOGRAPHIC EMULSION. FOR COLOR MAP REPRODUCTION
Nanking -- Comrade Kao Fu-hsiang of the Geographical Research Bureau,
China Academy of Sciences, has announced the successful development of a
panchromatic emulsion sufficiently sensitive to the full spectrum to he of
invaluable use in the color reproduction of maps. The emulsion consists
of silver bromide, silver iodide, silver chloride, and silver nitrate, in
a collodion base. Although Kao's experiment as a whole is considered basi-
cally successful, the. registration of gray and black tones remains some.-,hat
unsatisfactory with this emulsion. The application of this emulsion in
cartographic reproduct:I.cr1will mean a reduction, to several hours, of the
process, which formerly required the services of one person for approximately
23 days, and a saving of 90 percent in expense.
[K-ao's development is presumably a black-and-white emulsion for use in
some color-separation process)
SECURITY IIlFIGWRI0N
Sanitized Copy Approved for Release 2011/08/23: CIA-RDP80-00809A000700020012-4