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تطوير الدبابات .. المعالجة والطباعة بالأبيض والأسود .. المرشد خطوة بخطوة للتصوير الفوتوغرافي
Developing tanks
The plastic developing tank
A typical tank has five plastic parts , shown right . The tank body is threaded at the top to receive the light - proof lid . The reel , which loads from its outer edge , has a spiral groove designed to hold the film in a loose coil . Slots top and bottom allow solutions to reach the film freely . Some reels have an adjustable center core - you can pull top and bottom further apart to accept wider rollfilm .
A baffle system in the lid allows solutions to be poured in and out of the tank without admitting any light . The plastic rod drops into this hole for rotating the reel , or you can agitate the solutions by putting on the cap and turning the tank upside down .
Cap
Agitator rod
Light - proof lid
Plastic edge- feeding reel
Plastic tank
The stainless steel tank
The various sections of this stain- less steel tank have the same function as their plastic counter- parts . Although it is more expen- sive than a plastic tank , it is smaller , simpler , easier to clean , and quicker to dry . The tank body has a push - on light - proof lid , and contains a non - adjustable metal reel . This has a spiral channel designed to be loaded with film from its center outwards .
The light - proof lid has a baffle system like the plastic tank , so that once the film is enclosed it is fully protected from light . You can pour solutions in and out through the lid center in normal room lighting conditions . To circulate solutions in a stainless steel tank put on the plastic cap , then turn the whole tank upside down .
Cap
Light - proof lid
Stainless steel
center - feeding reel
Stainless steel tank
Loading an edge - feeding plastic reel
Make sure you have all the parts of the tank , the film , and scissors before placing them in the load- ing bag ( or switching out the light ) . An adjustable reel must be pre - set for the right size of film .
1. In total darkness , remove the film from its backing paper . cartridge or cassette . Remember that standard 35 mm cassette film must have the shaped first few inches cut off between per- forations to give a square end .
2. Feel for the two lugs at the entry slot of the reel . Feed an inch or so of film under the lugs into the outermost groove , until it stops . Always handle film at the edges only .
3. Hold one edge of the reel and rotate the other edge as far as it will go ( about 1-2 ins , 3-5 cm ) . Now rotate the other edge .
4. Do this alternately so that the film is steadily drawn into the spiral channel .
5. When you reach the end , tear or cut off the film spool . Push in this last piece of film , place the reel in the empty tank and screw on the lid . Bring the tank out into the light .
Loading a center - feeding stainless steel reel
Make sure that you have all the parts of the tank , the film , and scissors at hand before working in the dark .
1. Note the position of the clip at the center of the reel .
2. Hold the reel so that its grooves run in the same direction as the film . In darkness open the film container and attach the end of the film to the reel clip so that it feeds in straight and parallel to the reel grooves .
3. Bow the film , by gently pressing its edges , so that it feeds smoothly on to the reel ; be careful to avoid sharp kinking .
4. Keeping the film bowed . rotate the reel with your other hand , making sure that the film does not touch itself . The film should be drawn into the spiral channel . If it jams or feels buckled unwind a turn or so and try again .
5. At the end of the film , cut or tear off the spool and tuck in the end of the film . Run your fingers around the outside of the reel to feel if the film has buckled during loading . If any part of the film is protruding , then it should be unwound and re - loaded .
6. Place the loaded reel into the developing tank and push on the lid before bringing it out into normal light .
Developing tanks
The plastic developing tank
A typical tank has five plastic parts , shown right . The tank body is threaded at the top to receive the light - proof lid . The reel , which loads from its outer edge , has a spiral groove designed to hold the film in a loose coil . Slots top and bottom allow solutions to reach the film freely . Some reels have an adjustable center core - you can pull top and bottom further apart to accept wider rollfilm .
A baffle system in the lid allows solutions to be poured in and out of the tank without admitting any light . The plastic rod drops into this hole for rotating the reel , or you can agitate the solutions by putting on the cap and turning the tank upside down .
Cap
Agitator rod
Light - proof lid
Plastic edge- feeding reel
Plastic tank
The stainless steel tank
The various sections of this stain- less steel tank have the same function as their plastic counter- parts . Although it is more expen- sive than a plastic tank , it is smaller , simpler , easier to clean , and quicker to dry . The tank body has a push - on light - proof lid , and contains a non - adjustable metal reel . This has a spiral channel designed to be loaded with film from its center outwards .
The light - proof lid has a baffle system like the plastic tank , so that once the film is enclosed it is fully protected from light . You can pour solutions in and out through the lid center in normal room lighting conditions . To circulate solutions in a stainless steel tank put on the plastic cap , then turn the whole tank upside down .
Cap
Light - proof lid
Stainless steel
center - feeding reel
Stainless steel tank
Loading an edge - feeding plastic reel
Make sure you have all the parts of the tank , the film , and scissors before placing them in the load- ing bag ( or switching out the light ) . An adjustable reel must be pre - set for the right size of film .
1. In total darkness , remove the film from its backing paper . cartridge or cassette . Remember that standard 35 mm cassette film must have the shaped first few inches cut off between per- forations to give a square end .
2. Feel for the two lugs at the entry slot of the reel . Feed an inch or so of film under the lugs into the outermost groove , until it stops . Always handle film at the edges only .
3. Hold one edge of the reel and rotate the other edge as far as it will go ( about 1-2 ins , 3-5 cm ) . Now rotate the other edge .
4. Do this alternately so that the film is steadily drawn into the spiral channel .
5. When you reach the end , tear or cut off the film spool . Push in this last piece of film , place the reel in the empty tank and screw on the lid . Bring the tank out into the light .
Loading a center - feeding stainless steel reel
Make sure that you have all the parts of the tank , the film , and scissors at hand before working in the dark .
1. Note the position of the clip at the center of the reel .
2. Hold the reel so that its grooves run in the same direction as the film . In darkness open the film container and attach the end of the film to the reel clip so that it feeds in straight and parallel to the reel grooves .
3. Bow the film , by gently pressing its edges , so that it feeds smoothly on to the reel ; be careful to avoid sharp kinking .
4. Keeping the film bowed . rotate the reel with your other hand , making sure that the film does not touch itself . The film should be drawn into the spiral channel . If it jams or feels buckled unwind a turn or so and try again .
5. At the end of the film , cut or tear off the spool and tuck in the end of the film . Run your fingers around the outside of the reel to feel if the film has buckled during loading . If any part of the film is protruding , then it should be unwound and re - loaded .
6. Place the loaded reel into the developing tank and push on the lid before bringing it out into normal light .
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