Processing The Image Flashcards
The part of the processing system that moves film through the processor.
Transport System
Transport system consists of..
Transport rack
crossover networks
drive system
What are the tanks in an automatic processor?
Developer
Fixer
Washer
To prevent corrosion the tanks are made of?
Stainless Steel
Advantages of the Vertical Transport System
Feeds film evenly
Correct alignment of film
Alternates film side to side, ensures proper wear of rollers
Entrance Roller Assembly
rollers covered in corrugated rubber
keeps film in straight line
Transport Rollers
move film through chemical tanks and dryer assembly
Turnaround Assembly consists of:
Master Roller
Planetary Roller
Guide Shoe
Turnaround Roller
Master Roller
bottom of roller assembly
turns film from moving down to up
also called deep rollers
Planetary Roller
positioned on either side of turnaround roller
aids in proper alignment of film
Guide Plates
Guide Shoe
curved metal plates
positioned on either side of turnaround roller
guide film through roller assembly
Crossover Roller
moves film from one tank to another and finally into dryer
Crossover
space between rollers, allows for squeegee of film, removes excess liquid
Power provided by electric current
Drive System
Drive system
Turn all rollers and processors
powered by single motor
45-90 seconds from entrance roller to receiving bin
(varies depending on type of film)
Drive System
Standby Control
improves cost effectiveness
reduces wear and tear
decreases water use
Replacement of fresh chemicals after loss of chemicals during processing
Replenishment System
- chemicals eventually become exhausted
- developer and fixer need to be replaced
Which way is film placed on feed tray in order to ensure proper replenishment?
Horizontal
Over replenishment of developer causes…
Increase Density
Decreased Contrast
Over replenishment of fixer causes…
No effect on image, But a waste in solution
Two ways to replenish chemicals
- Volume replenishment
- for high volume workload - Flood replenishment
- scheduled at time intervals
- solution pumped into system every couple minutes on standby
- for processors that utilize low to medium number of films
Re-Circulation system is responsible for…
Agitates Solutions
Mixes old and new chemicals
Filters solution
Stabilizes temperature
Temperature control
Increased Temp = increased density
Decreased Temp = decrease density
What are the two temps of temperature control?
Immersion Heater: heated coils emersed in the bottom of tank
Heat exchanger: uses thermostat to heat developer
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