تجهيز الحمام كغرفة مظلمة .. كتاب طبع وتحميض الصور الفوتوغرافية

Chapter III

Equip the bathroom as a dark room
Before moving on to studying the methods of making prints, we have to stop for some time at the place where you will conduct all your photographic work in order to get acquainted with it and the conditions that must be met in order to obtain the best results. Effective to get what you want.

Workplace :

When choosing the place in which you will work, you must take into account, first of all, the number of windows and doors that exist and the possibility of closing them tightly to prevent any amount of leakage.

from the light inward. Darkening the windows: The easiest way to darken the windows is by hanging a thick piece of cloth on it with push pins because it is easy to use and remove after completing the work. There is another way to do this, which is to stick a large piece of cardboard on the window frame, and it is advisable to stick the piece of cardboard on the window using electrical tape (toilet) because it prevents any light from leaking through it, unlike the adhesive used
Stick a piece of cardboard on the window frame using tape and walnut.

for pasting paper. But if you plan to use a room in the house permanently] for printing purposes, it is advisable in this case to paint the windows in opaque colors that prevent light from entering the interior. Possible light leakage remains from a hole at the bottom of the door. And here you have to choose between two solutions, either to insert a thick towel under the door, or to install a sill behind the door to prevent light from leaking.

Tuck a thick towel under the door to ensure that light does not seep in.

The outlets will become when one last problem remains, which is that the air trapped in the dark room after being sealed is all rotten after a period of time and needs to be renewed and this requires a special ventilation system which is now unnecessary. In general, the time during which the chamber is required to be tightly closed is the release of sensitive paper from its tightly closed box in preparation for work with it. Otherwise, the door can be partially slit to allow the air to circulate inside the room without fear. When you become so advanced in your photographic work that you stay in the dark room for several hours, you can provide your dark room (passperator) to bring in fresh air, and perhaps an air conditioner (condition) if you are financially able to do so.
Ensure that the dark room is completely darkened:

Sometimes the human eye can be deceived and make you feel that the room is completely dark, when in reality some small cracks in the window or door leak a little light enough to affect the sensitive paper, leaving a hazy tinge on it. Therefore, we advise you to make sure that the room is completely free of any traces of light leakage, to perform the following test after completing the room preparation for the first time:

Take out a printed sheet of paper from its box and cut it in two halves, the back of the first half without exposing it, then fix it. Put the second half on the work table in front of you and place a coin on it and leave it for five minutes, then endorse the sensitive piece of paper as you did with the first. Compare the endorsement result of the two halves under normal room lighting conditions. If it appears to you that the two halves are completely identical in terms of color, this means that there is no light leakage. But if the color of the second half changes, or a trace of a coin appears on it, this is evidence of a light leakage. You must find out its source and fix it before starting your half experiments.

photographic.

Contents of the darkroom:

When you work in the dark room, you will need a set of equipment, which I will list here without a detailed explanation because the explanation will come later:

1 - Enlarger 2 - Three plastic plates measuring at least 20 x 25 cm

Two photographic clips

- photographic enlargement paper (reprint paper)

E - A sheet of glass measuring at least 23 x 30 cm. 6 - A photographic safety light

- Normal clock, timer or alarm

- The copy paper holder is adjustable to 20 x 25 cm
- Soft brush or blowing brush. 10 - Chemicals: Paper Appearance - Waqf Bath - Fixative. Remember to put these equipment, especially the chemicals, on special shelves out of the reach of the little ones, and to arrange them according to your need for them.

Arrange the contents of the darkroom:

Arrange the contents of the room so that the materials closely related to the pickles are placed on one side, and the materials that are less closely related to the solutions, which must be kept dry on the other side, and in clearer words, we say put the printing plates, tweezers, and endorsement solutions close to the water source, and put on the side farthest from the water source the amplifier, the printing papers, and the safety light And the clock and the paper holder. Unlike films, endorsement paper is not sensitive to some colors of light. Therefore, it is possible to light a faint red light or a dark green light while working with photographic papers without causing them to be damaged, and this is what we mean by the term photographic safety light. It is advisable to put the safety light in a middle place between the place closely related to water and the dry place in order to obtain equal lighting for all the contents of the room. Photographers usually arrange the contents of their rooms according to the priorities of use starting from left to right (see the attached illustration No. (39). Therefore, it is advisable that you also arrange the contents of the room according to the same sequence, for the sake of ease of work, by placing the magnifier and other equipment attached to it, such as a watch and a stand The paper is on the far left, then you place the bowl of the appearance, the bowl of the endowment bath, and then the bowl of the fixer, ending with that, to the far right.

The arrangement that we have explained is the typical arrangement of the dark room, and it remains in the end up to you to determine how to arrange the contents of your room according to the capabilities and space available to you to work within it.