Module 8

Question 1

Manual Processing

Answer 1

A ‘Dark Room’ is necessary
• 1.On exposure a latent image is formed
• 2.Image must be developed to be seen
• 3.Must then be fixed to make it a permanent film

Question 2

Manual Processing Development Stage 1

Answer 2

The radiograph is fully immersed in the developing solution which is alkalin

Question 3

How long does it take for solution to oxidise

Answer 3

10- 14 days

Question 4

What temperature should the solution and how long should it immerse?

Answer 4

20°C for 5 minutes, 21°C for 4 ½ minutes, 22°C

for 4 minutes

Question 5

What happens to silver halide crystals?

Answer 5

The silver halide crystals will be converted to black metallic
silver and will produce grey/black areas of image

Question 6

What happens if developed for too long or hot

Answer 6

Dark film

Question 7

What happens if developed for too short or cool

Answer 7

Light film

Question 8

Manual Processing Developing Stage 2

Answer 8

Wash to remove residual developer

Question 9

Manual Processing Stage 3

Answer 9

Fix Unsensitized silver halide removed to show

transparent/white areas of the image

Question 10

How long is fix immersion stage

Answer 10

8- 10 mins

Question 11

Problems at fix stage

Answer 11

Green/yellow – inadequate fixing – eventually turns brown

Question 12

Manual Processing Stage 4

Answer 12

Wash

Running Water

Question 13

Manual Processing Stage 5

Answer 13

Dry

Question 14

Automated Processing

Answer 14

Same sequence as manual processing but no wash between
the developer and the fixer as the rollers squeeze off excess
liquid

Question 15

Processing faults Dark Film

Answer 15

Developer too concentrate
Too hot
Immersed too long

Question 16

Processing Fault Blank Film

Answer 16

Fixed before developed

Question 17

Processing Fault Partly blank film

Answer 17

Partially immersion in developer

Question 18

Processing faults fogged film

Answer 18

not light tight

Question 19

Processing faults faint image

Answer 19

Developer too weak
Temp too low
not immersed long enough

Question 20

Processing fault Fading Image

Answer 20

Inadequate fixing

Question 21

Processing Fault Loss of film

Answer 21

Film Stuck - poor maintenance

Question 22

Processing Fault Visible Artefact

Answer 22

Contaminated film solution spillage

Question 23

Handling Faults Scratches

Answer 23

Film caught on tank side

Question 24

Handling Faults Fingerprints

Answer 24

Not held at Edge

Question 25

Handling Faults Blank Spots

Answer 25

Splashed with fixer

Question 26

Handling Faults Black line

Answer 26

Bent or folded film

Question 27

Handling Faults Brown or green stains

Answer 27

Not fixed properly, old solution

Question 28

Handling faults patterned film

Answer 28

Dried too quickly at too hot temp

Question 29

Handling Faults Crystals on Film

Answer 29

Not washed sufficiently after fixing