RADD 2501 Processing Key Terms & Definitions

RADD 2501 Processing Key Terms & Definitions -...

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Processing Modules 5-6 Question Answer Whta are the 4 steps in the processing cycle? a. development b. fixing c. washing d. drying Development is the 1st step in the processing cycle and converts the latent (invisible) image into a _________ image. manifest (visible) During the development cycle, silver hadlide grains are reduced to _________ _________. metallic silver T/F - Development provides optical density and contrast? TRUE If unexposed crystals are reduced during development cycle, ________ is produced. fog Chemical fog _____________density and ___________ contrast. increases density and decreases contrast. As developer becomes depleted of electrons, it becomes ________________. oxidized. T/F - Developing solution consists of solvent water, sequestering agents, developing agents, buffering agents, restrainer, preservative, starter solution and hardeners. TRUE Sequestering agents (chelates) do what? They soften water. __________. Phenidone and hydroquinone. T/F - Phenidone produces black (hi contrast) image and acts slowly. It also is more selective. FALSE. Hydroquinone produces black (hi contrast) image and acts slowly w/more selectivity. What does Phenidone produce? Phenidone produces shades of gray quickly w/low selectivity. Which developing agent controls toe of characteristic curve and which controls shoulder? Phenidone controls toe and Hydroquinone controls shoulder. Working developer is made-up of 2 things. .. developer starter and developer replenisher. Does starter solution have any acidic restrainer? Yes. Starter solution INCREASES pH to normal value and
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This note was uploaded on 11/22/2011 for the course RADD 2501 taught by Professor Sandyeverage during the Winter '11 term at Life Chiropractic College West.

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RADD 2501 Processing Key Terms & Definitions -...

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