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 ?
The highest GSI was recorded at the temperature of 35[degrees]C and water potential of 0 MPa (Figure 1B), which occurred because higher temperatures increased the speed of the metabolic processes, shortening the duration of the phase II of the imbibition process.
Imbibition process was conducted with periodic weighting (0, 2, 5, 8, 12, 16, 24, 36, 48, 60, 72, 84, 96 and 120 hours), until at least a seed of each replicate emitted a radicle.
2007) hypothesized that the injured germinating embryos are ideal natural competent statuses for transformation, Agrobacterium could take advantage of the natural imbibition process of seeds and penetrate through wounded embryos, thus achieving the transformation to the meristematic cells.
There were also attempts to calculate so-called effective thickness of material what can be usefull in the modelling of the observed imbibition process.
Thus, a one- dimensional (1D) countercurrent imbibition process can be described by a non-linear diffusion equation of the form:
Some seeds have mucilaginous coatings that attract eaters and enhance the imbibition process.
The imbibition process is essentially a physical one, which as a first approach does not depend on seed metabolism (Dasberg et al.
2011b), stressed seedlings grew relatively weaker on the whole, reflecting a combination of their lower capacity to absorb water, the hardness of membrane reparation, and the damage of membrane structure caused during the imbibition process.
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.