Imbibition Process

Imbibition Process

 

(Russian gidrotipiia, hydrotyping), a photographic method, based on the absorption process, of making color pictures using water-soluble dyes. It is essentially a subtractive method of three-color printing using colored gelatin reliefs (matrices).

In the imbibition process, three color-separated matrices are obtained by a chemical-photographic process in which films covered with thin, light-sensitive gelatin layers are first exposed through a colored negative picture and three filters in turn (red, green, and blue-violet). Then each matrix is colored with a water-soluble dye using the color complementary to the color of the filter that produced the matrix. From matrices having blue, purple, and yellow colors successive contact prints are made (imbibition dye transfer) on a paper or film coated with a thin gelatin layer that has been previously moistened to ensure diffusion of the dye from the matrix into the take-up layer. After three accurately registered transfers from the matrices to the same layer, a colored positive image is obtained. More than 100 prints can be made from one set of matrices by repeated dyeing. The imbibition process is of particular importance as a method for the mass printing of colored moving picture films.

REFERENCE

Chel’tsov, V. S., S. A. Bongard, and A. N. Iordanskii. “Sovremen-nye sposoby polucheniia tsvetnykh fotograficheskikh izobra-zhenii.” Khimicheskaia nauka i promyshlennosf’, 1958, vol. 3,no. 5, p. 583.

B. B. BERKENGEIM

References in periodicals archive ?
There were also attempts to calculate so-called effective thickness of material what can be usefull in the modelling of the observed imbibition process.
The dependence of measured and calculated heights on time of the imbibition process for emulsions with 5% of the oil phase and gelatin concentration 0.
Thus, a one- dimensional (1D) countercurrent imbibition process can be described by a non-linear diffusion equation of the form:
The imbibition process in these cases did not depend on the injection rate since the matrix was surrounded by water.
Figure 5 shows this simulation match with wettability alteration during Imbibition process.
The networks extracted from the images are used in models to predict multiphase flow properties such as relative permeability, capillary pressure and spontaneous imbibition process.
The bulk volumes of rock samples were varied in order to study the effect of plug size on the imbibition process (Table 1).
The shortcoming of the scaling law, as reported by the authors, is the difficulty in correlating the entire imbibition process for different rock types.
Scaling-up the capillary imbibition process from laboratory experiments on homogenous and heterogeneous samples," presented at the SPE European Petroleum Conference, London, England, 2022 October 1986.