ألوان .. كتاب فن التحميض والطبع والتكبير

Chapter II

colors

Developing, printing and enlarging negatives and color sensitive papers share many of the steps already mentioned in the previous chapter regarding black and white. In order to avoid prolongation and repetition, we will mention the steps of the different operations of the colors, with an explanation only at the points of difference.

In this chapter, we will follow the same approach that we followed in the previous chapter, starting with developing color negative films, then printing and touch proofing, then enlarging, then developing color sensitive paper, and finally preparing the image for viewing.

First: Developing negative color films Everyone who can successfully develop black and white film can develop a film.

Note the following: tinted, with

1- Maintaining a constant temperature is very important during acidification operations, especially exposure. Therefore, place the acidification tray containing the film, as well as the solution bottles, in a water bath with a controlled temperature for several minutes before starting acidification, as well as during acidification.

.

2- The acidification takes place at a relatively high temperature (according to the instructions of the film maker and chemicals).

3- The times of acidification as well as the method of moving the film are very important because the colored film is more sensitive to these changes

4- It should not come into contact with the colored highlighting chemicals because they are more alkaline. It is preferable to use a glove during acidification.
. Cover the can with the second lid and turn the can over twice within four seconds. After that, remove the can from the water bath every four seconds, turn it over once, and then return it to the water bath

When there is only 10 seconds left of the display time, remove the can from the water bath and empty the display solution completely from it. -

2- The rest of the steps are allowed to change the temperature within 3 degrees upwards or . Watta (i.e., between 540.8m and 534.8m). Turn the can upside down every 10 seconds. 10 seconds before the time expires, empty the container completely of the hypo solution

3- The washing takes place with water, where you fill the container with water at the same temperature as the solutions, stir it several times, then empty it, and repeat the process several times until the washing time is over.

4- Proverb (2)

e - like (3)

6- The film should not be washed after using the regulator solution.

Drying is like drying black and white films.

Final note:

500 cc of solutions can be used to develop 6 films of 35 mm or 4 films of 120 only.

Second: Printing colored photosensitive paper or doing a contact rehearsal. This is no different from printing black and white photosensitive paper, except for the need to use the light of the magnifier after correcting its colors. We will explain the color adjustment process