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Generally speaking, there are two main chemicals used in b&w film, and a couple of auxiallry chemicals. The primary chemicals are developer, which causes the silver iodide of the film or paper emulsion to darken if it has been exposed to light, and fixer, which removes the undeveloped silver iodide from the emulsion. A chemical used to completely stop the development process is called stop bath, and is used between the developer stage and the fixer stage in both b&w film & paper processing.
Other chemicals, like hypo clear is used to remove all traces of the fixing agent & rinsing agents to reduce stopping during the drying of film. These reagents (chemicals) are not used in enlargements or paper process.
Black & White developers vary in chemical composition and produce variations accordingly but are generally separated into subcatagories based upon grain quality . . fine grain developers reactions generally are slower.
When working with color, the developer is often split into two different chemicals, one which develops the primary (black and white) image, and another that develops the color layers. This is done via color couplers and as such is sequential in the developement chemistry,not as a b&w developer except in some applications of slide processing.
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∙ 10y ago
Wiki User
∙ 13y agoLight sensitive photographic paper.
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What is safe light in a dark room?
Safelights are used when printing. They're made to produce only light of a color the paper being used isn't sensitive to.
What is an example of adjective dark?
The little boy was scared of the dark room at the end of the hall.
Why is a room painted with light colors brighter than a room painted with dark colors?
Light colors reflect and dark colors absorb.
Why do photos need to be developed in a dark room?
For black & white, a safelight (usually red) of proper strength and properly distanced can be used to provide illumination under which one can develop paper prints. This assumes the use of typical (orthochromatic) paper, which is desensitized to red. However, the paper can be fogged if the light is too strong or too close for the total period of time the paper is out of the package until it has gone through the fixing process. Panchromatic paper is sensitive to all colors, therefore it has to be protected from light as if it were color paper. For color, total darkness is required (obviously except during exposure of the paper). Since that is not practical, developing drums are used to provide the light-tight chamber for the development process.
How do I know if I overexposed my film paper?
If you overexposed your film paper, it will come out dark. Most of the time it will come out black.
What is safe light in a dark room?
Safelights are used when printing. They're made to produce only light of a color the paper being used isn't sensitive to.
Was i supposed to open my brand new pack of photographic paper?
If you weren't in a dark room, no.
In dark room of photography which bulb can glow?
Usually a red bulb will illuminate the room - while having no effect on the film or paper.
Which bulb can glow in dark room photography?
Usually a red bulb will illuminate the room - while having no effect on the film or paper.
Why are tongs used in a dark room?
Tongs are used in a dark room so that the liquid will not spill or get on your clothes. Another reason tongs are used is so that the pictures are easy to handle and won't get messed up during development.
What is in dark colored paper?
Dark colored paper is white paper that has been dyed another color. Dark colored paper can come in many different colors.
Will your room look dark if you have a dark wall?
It depends on however big the room is
How can you keep your brother away from your journal and your life?
lock him in a cold dark room with a double sided paper that says turn over on both sides.
When was Dark Room - album - created?
Dark Room - album - was created in 1980-06.
What are the ratings and certificates for Dark Room - 2005?
Dark Room - 2005 is rated/received certificates of: USA:PG
What are the ratings and certificates for In the Dark Room - 2013?
In the Dark Room - 2013 is rated/received certificates of: Finland:S
What are the ratings and certificates for The Dark Room - 1982?
The Dark Room - 1982 is rated/received certificates of: Australia:R
