Compatative Research On Durability Of Three Kinds Of Colorful Photographic Archives

Colorful photographic archives is the most important makeup in the part ofaudio-visual archives conserved in our archives all of the country at the present time.With the special record material and through unordinary record mode, colorfulphotographic archives contain lots of image information, and the information has thecharacteristic of clarity, stability and convenience in using. In a long time following,the proportion of colorful photographic archives will augment markedly. The researchon the endurance of colorful photographic archives is a significant question fordiscussion in archives protection technology field.With the development of the photographic technology, the direction of digitalcameras replacing the mechanical cameras is obvious increasingly. Comparing to theadvantage in the colorful photo-develop technology, colorful photo-print technologyalso has his strong print. In this paper the author selects 3 kinds of photographs madeby different means, such as colorful photographs taken by traditional mechanicalcamera, colorful photographs taken by digital camera, colorful digital printphotographs, and first set a contrast in the theories of making 3 kinds of photograph,and designed a series of scientific experiments, to compare the there kinds ofphotograph's representation durability to heat, humidity, ray and oxidant, so there isbig realism and important meaning.The frame in this paper contains:(1) comparison on imaging principle, raster display principle and appliance of 3kinds of photograph;(2) analyses on the inner causation to decline on durability of 3 kinds ofphotograph;(3) analyses on the exterior causation to decline on durability of 3 kinds ofphotograph;(4) comparison and analyses on the chromatic aberration behaved by 3 kinds ofphotograph after 72 hours and 144 hours' heat;(5) comparison and analyses on the chromatic aberration behaved by 3 kinds ofphotograph after 72 hours and 144 hours' damping;(6) comparison and analyses on the chromatic aberration behaved by 3 kinds ofphotograph after 72 hours and 360 hours' irradiation; (7) comparison and analyses on the chromatic aberration behaved by 3 kinds ofphotograph after 72 hours and 360 hours' irradiation;(8) comparison and analyses on the chromatic aberration after 72 hours and 360hours' irradiation behaved by 3 kinds of photograph, which were back up withmembrane in cold mode;(9) comparison and analyses on the chromatic aberration after 72 hours and 360hours' irradiation behaved by 3 kinds of photograph, which were back up withmembrane in hot mode;(10) comparison and analyses on the chromatic aberration behaved by 3 kinds ofphotograph after 72 hours and 144 hours' forcefully oxidation;(11) comparison and analyses on the chromatic aberration behaved by 3 kinds ofphotograph after 72 hours and 144 hours' aging in outside circumstance.Through these experiments, we could get some conclusions as follows:(1) No matter what kind of imaging principle and raster display principle of the 3kinds of photograph, all kinds of colorful images which are made by dye are notlasting items, and this lies on the luminescence principles of dye's molecule;(2) Under the commonness of weak durability of 3 kinds of photograph, themolecule of dye and the image principle are different from each other, so they reactdissimilarly to outer circumstance. In comparison, colorful digital print photographsare the worst, and the colorful photographs taken by digital camera are the best;(3) In the condition of labefaction, the dye molecule of 3 kinds of photograph andthe image's color compound are unlike, so they reacted differently to the damaging inout circumstance. In comparison there durability to heat is the worst, while tohumidity they behave best;(4) In actual management in archives, we can't underestimate the fade of colorfulimages. The promiscuous factors in surroundings can make compensative affection tothose images;(5) To prolong the colorful images' life, we must back up the images with hotmembrane, which is composed by polyethylene and it has compact configuration,with all-right anti-heat, anti-humidity, anti-sunburn and can segregate to nocuous gas;(6) To prolong the using time in colorful photograph archives, we must makeseveral Copies to those images, those copies can be negative image, photographs,electronic images, etc.