طباعة ورقة الاختبار ١-a .. كتاب طبع وتحميض الصور الفوتوغرافية

Print the test paper:

After you have prepared what you need to print the test paper, enter the dark room and stand up

With the following steps:

1 - Place the aperture of the magnifier lens in the middle of the number of available apertures

(approx. P (8).

2- Turn off the room lights and turn on the magnifier lamp. - Raise the head of the magnifier so that the light emanating from it covers the entire area of ​​the contact stamp
The subject is placed on the base plate of the magnifier, with a slight increase in the sides, in order to ensure that the entire print is exposed successfully.

4- If you use an ordinary lamp to expose the test paper, hang it in some way over the contact stamp in such a way that its light evenly covers the entire stamp. The lamp must be firmly placed at a height of 35 cm from the stamp. e - Turn on the room lamp and then fill the dishes with the working solutions. It is worth noting here that most of the paper backings are prepared as storage solutions, then a certain amount of them is diluted with water to obtain work solutions, while it is possible to work with fixative solutions and the endowment bath when they are in the form of storage solutions. You are now ready to print. The first printing steps are: 1- Determining the time required for exposure: This is divided into several steps: First: Clean the contact stamp using a clean cloth from any trace of dust, because dust particles and fingerprints that are attached to the glass plate will appear clearly on the final print if we do not remove it. well . Second: Take the negatives out of their envelopes and place them in a clean place near the amplifier. Third: Turn off the room lamp and turn on the safety lamp. Fourth: Presentation of a test clip in order to find out the time required for exposure to one of them

The following two methods:

The first method:

1- Take out a sheet of paper measuring 20 x 25, then cut it into four equal parts. 2 - Keep one section in front of you and return the remaining sections to the box because you will use them in later experiments. 3 - Open the contact printer and place the piece of photographic paper on top of the cardboard plate of the printer in such a way that the sensitive side of the printing paper is facing up. 4- Place the negative clip on top of the print paper clip so that the glossy side of the negative clip is facing up, then close the stamp over it.

- snort

scraps

Only from the negative from under the piece of cardboard. 6- Light the magnifying lamp or the lamp that you will use for printing and turn on the clock or the timer at the same moment as the light source is lit. Keep the light source lit for exactly 60 seconds.

Lay the negative clip on top of the negative and the sensitive paper with a sheet of cardboard. e - Cover the print paper and the negative with a piece of cardboard so that one frame is visible

Slide another piece of cardboard off the print paper and the negative

- While the light source is on, remove a piece of cardboard from the print paper and the negative every 10 seconds, allowing another part of them to be exposed to the light source. After the 60-second period ends, you will get //6/ exposures for the entire print sheet. - Turn off the light source after the 60 seconds are over, then open the stamp and put the negative back in its place next to the rest of the negatives, then the paper clip acid (go to fifth if you are going to work in this way.

The second method:

1- Remove a printed paper from its envelope, then cut it into four equal parts

Boxes .
Keep one section in front of you, then put the remaining sections back into the box.

Cut the print paper into four equal parts.

3- Open the stamp, then place the scrap of sensitive paper on top of the cardboard sheet, with its sensitive side facing up. Then place one or two scraps of the negative, glossy side up, on top of the stamp. 4- Place a Kodak exposure time meter over the print paper and the two negatives, then close the printer over them.

Place a Kodak exposure timer over the print paper and the two negatives.

e- Showing the printer with its light source for 60 seconds.

Show for 60 seconds.
- Turn off the light source after the 60-second period ends, then put the two negatives back in their place and acid the print paper. Fifth: Dip the test strip that was previously exposed by one of the two previous methods in the appearance solution and the time required to complete the endorsement accurately. Most papers need a period of not less than 60 seconds to complete their endorsement. Some of them need a period of 90 seconds.

Dip the test clip into the emitter while simultaneously running the timer.

Sixth: While the negative is immersed in the display solution, hold it at one end with tweezers and shake it gently to constantly renew the solution on top of it.

Shake the clip gently while endorsing.

Seventh: Lift the clip from the developer solution using tweezers after its endorsement is complete, then leave it for a few seconds hanging with the forceps over the applicator plate so that the droplets suspended in it return to the applicator plate.

Eighth: Dip the test clip into the endowment bath and gently shake it for 30 minutes

second . Ninth: Take out the test clip with the second forceps from the endowment bath plate. Hold it slightly above the stand-off bath plate to return the excess drops to the plate, then dip it in