Restoration solution for cine film bubble and restoration method

Abstract

The present invention discloses a restoration solution for cine film bubble and a restoration method. The restoration solution comprises 100 parts by volume of n-butanol, 60 to 120 parts by volume of lacquer thinner having 5% by mass of ethyl cellulose, 8 to 20 parts by volume of diphenyl isooctyl phosphite, 2 to 10 parts by volume of bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, and 2 to 15 parts by volume of petroleum ether. The present invention integrates micro-restoration, bubble puncture and optical filling, and effectively restores a bubble having a diameter of 0.1 mm to 1 mm generated between a film base layer and an emulsion layer of a cine film. The present invention has advantages of simple method of operation, low cost and good controllability. And the used restoration solution has good thermal stability, oxidation resistance, and permeability, and can eliminate the phenomenon of light scattering within the bubble, so that patterns and writing of the original image data are explicitly presented, and a better restoration effect is achieved without damages to films. Therefore, the restoration solution has good application values and market prospects.

Claims

1. A restoration solution for cine film bubble comprising materials in parts by volume ratio as follows: 100 parts of n-butanol; 60 to 120 parts of lacquer thinner having 5% by mass of ethyl cellulose; 8 to 20 parts of diphenyl isooctyl phosphite; 2 to 10 parts of bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate; and 2 to 15 parts of petroleum ether.

2. The restoration solution for cine film bubble according to claim 1 comprising materials in parts by volume ratio as follows: 100 parts of n-butanol; 80 to 100 parts of lacquer thinner having 5% by mass of ethyl cellulose; 10 to 15 parts of diphenyl isooctyl phosphite; 5 to 8 parts of bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate; and 5 to 10 parts of petroleum ether.

3. The restoration solution for cine film bubble according to claim 1 comprising materials in parts by volume ratio as follows: 100 parts of n-butanol; 100 parts of lacquer thinner having 5% by mass of ethyl cellulose; 14 parts of diphenyl isooctyl phosphite; 6 parts of bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate; and 10 parts of petroleum ether.

4. A method of restoring a cine film bubble using the restoration solution of claim 1 comprising the steps of: (1) Cleaning positioning emulsion layer of a cine film to be restored upwardly in a field of a microscope connected to a display, photographing with transmitted light, wetting the emulsion layer of bubble surface with a cotton swab dipped with n-butanol and cleaning it up, then puncturing the middle section of the bubble surface by a needle having a diameter of the tip of 50 to 200 μm, repeatedly pressing the bubble surface with the cotton swab dipped with n-butanol to penetrate n-butanol into the interior of the bubble for dissolving plasticizers and cleaning the plasticizers up, and subsequently adsorbing the n-butanol and plasticizers thoroughly along edges of the bubble with filter paper and drying in natural conditions; and (2) Restoration repeatedly pressing the bubble surface with a cotton swab dipped with the restoration solution to penetrate the restoration solution into the interior of the bubble and meanwhile to completely expel air from the bubble.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a micrograph of a cine film to be restored.

(2) FIG. 2 is a micrograph of the cine film in FIG. 1 after cleaning.

(3) FIG. 3 is a micrograph of the cine film in FIG. 2 after restoration.

(4) FIG. 4 is a micrograph of a cine film to be restored.

(5) FIG. 5 is a micrograph of the cine film in FIG. 4 after cleaning.

(6) FIG. 6 is a micrograph of the cine film in FIG. 5 after restoration.

(7) FIG. 7 is a micrograph of a cine film to be restored.

(8) FIG. 8 is a micrograph of the cine film in FIG. 7 after cleaning.

(9) FIG. 9 is a micrograph of the cine film in FIG. 8 after restoration.

DETAILED DESCRIPTION OF THE INVENTION

(10) The present invention will be further described with reference to Figures and Examples to which, however, the invention is not restricted.

Example 1

(11) A restoration solution for cine film bubble is prepared by adding 10 g ethyl cellulose in 190 g lacquer thinner, stirring under reflux for 2 hours at 120° C. to completely dissolve the ethyl cellulose and thus to prepare a lacquer thinner having 5% by mass of ethyl cellulose; and taking 100 mL of the lacquer thinner having 5% by mass of ethyl cellulose, 100 mL n-butanol, 14 mL diphenyl isooctyl phosphite, 6 mL bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and 10 mL petroleum ether, and homogeneously mixing the same under ultrasonic wave.

(12) The method of restoring a cine film bubble using the restoration solution for cine film bubble prepared in this Example is as follows:

(13) 1. Cleaning

(14) positioning emulsion layer of a cellulose acetate film to be restored (FIG. 1) upwardly in a field of a microscope disposed on a XWY-VI fiber analyzer, photographing with transmitted light at 110×, moving the bubble to be restored within the field of view of a display, wetting the emulsion layer of bubble surface with a cotton swab dipped with n-butanol and cleaning it up, then puncturing the middle section of the bubble surface by a silver needle having a diameter of the tip of 80 μm, repeatedly pressing the bubble surface with the cotton swab dipped with n-butanol to penetrate n-butanol into the interior of the bubble for dissolving plasticizers, achieving the purpose of cleaning up the plasticizers inside the bubble in the process of repeatedly dipping n-butanol and pressing, and subsequently adsorbing the n-butanol and plasticizers thoroughly along edges of the bubble with filter paper and drying in natural conditions. The result is shown in FIG. 2.

(15) 2. Restoration

(16) Repeatedly pressing the cleaned bubble surface with a cotton swab dipped with the restoration solution to penetrate the restoration solution into the interior of the bubble, and the restoration solution is filled inside the entire bubble while air is squeezed out. The result is shown in FIG. 3.

(17) As can be seen from FIG. 2, the plasticizers are cleaned up and the image data are presented in the cleaning process, however, the emulsion layer generates an interval interface due to scratching, folding, twisting, and the like, such that a phenomenon of light scattering occurs, i.e., fading and blurring of patterns and writing of the original image data. As can be seen from FIG. 3, after filling the interval interface using the restoration solution of the present invention, the solution forms a film inside the bubble, thereby eliminating the phenomenon of light scattering, so that the patterns and writing of the original image data are explicitly presented, and a better restoration effect is achieved.

Example 2

(18) A restoration solution for cine film bubble is prepared by taking 80 mL of lacquer thinner having 5% by mass of ethyl cellulose, 100 mL n-butanol, 10 mL diphenyl isooctyl phosphite, 5 mL bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and 5 mL petroleum ether, and homogeneously mixing the same under ultrasonic wave.

(19) The method of restoring a cine film bubble using the restoration solution for cine film bubble prepared in this Example is the same as that in Example 1, and the result is shown in FIG. 4 to FIG. 6. As can be seen from the Figures, the patterns and writing of the original image data of the restored cellulose acetate film are explicitly presented.

Example 3

(20) A restoration solution for cine film bubble is prepared by taking 100 mL of lacquer thinner having 5% by mass of ethyl cellulose, 100 mL n-butanol, 15 mL diphenyl isooctyl phosphite, 8 mL bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and 10 mL petroleum ether, and homogeneously mixing the same under ultrasonic wave.

(21) The method of restoring a cine film bubble using the restoration solution for cine film bubble prepared in this Example is the same as that in Example 1, and the result is shown in FIG. 7 to FIG. 9. As can be seen from the Figures, the patterns and writing of the original image data of the restored cellulose acetate film are explicitly presented.

Example 4

(22) A restoration solution for cine film bubble is prepared by taking 60 mL of lacquer thinner having 5% by mass of ethyl cellulose, 100 mL n-butanol, 8 mL diphenyl isooctyl phosphite, 2 mL bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and 2 mL petroleum ether, and homogeneously mixing the same under ultrasonic wave.

Example 5

(23) A restoration solution for cine film bubble is prepared by taking 120 mL of lacquer thinner having 5% by mass of ethyl cellulose, 100 mL n-butanol, 20 mL diphenyl isooctyl phosphite, 10 mL bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and 15 mL petroleum ether, and homogeneously mixing the same under ultrasonic wave.