PROCESSING OF LATENT IMAGE Flashcards
(99 cards)
What are the systems of film processing?
manual
automatic
daylight
What are the chemical components of processing the latent image?
Developer
Rinsing
Fixer
What are the protective measures when mixing solutions
Wear a mask
Waer nitrile gloves
Wear protective glasses
What are the 2 types of image processing?
Manual and Automatic
This type of processing is used for the advantage of a longer archival property
Manual processing
What are the results of manual processing?
Inconsistency and creation of wet mess
Another name for manual processing
Hand Processing
Required time and space for manual processing
requires 1 hour and excessive amounts of space
Sequence of events in the processing (IN ORDER)
Wetting Developing Rinsing Fixing Washing Drying
This swells the emulsion to permit subsequent chemical penetration
Wetting
Required time for wetting in the manual and automatic processing?
M - 15 secs
A - none
This process produces a visible image from the latent image
Developing
Required time for developing in the manual and automatic processing?
M - 5 mins
A - 22 secs
This stops the development process and removes the excess development from the film
Rinsing
2 kinds of rinsing
Stop bath and Watery
In the stop bath, _______ solution of ______ is mathematical neutralizes the developer
1%, acetic acid
This relies on water to rinse & remove excess developer
Water bath
Required time for stop bath and water bath in the manual and automatic processing?
Stop bath: 30 secs (M) and none (A)
Water bath: 30 secs (M) and none (A)
What is fixing?
It removes the unexposed and underdeveloped silver halide crystals from the film emulsion and also hardens the gelatin
Required time for fixing in the manual and automatic processing?
10 mins (M) and 22 secs (A)
What’s the purpose of washing?
Removes residual from the emulsion surface and excess chemicals unwanted to the film
Required time for washing in the manual and automatic processing?
20 mins (M) and 20 secs (A)
Purpose of drying
Removes water and prepares radiograph for viewing
Required time for drying in the manual and automatic processing?
30 mins (M) and 26 secs (A)