Quality Assurance 2

Question 1

what causes a pale image?

Answer 1

underdevelopment 
insufficient developing time
use of exhausted developer
temp too low
conc too weak

Question 2

what causes a dark image?

Answer 2

overdevelopment
excessive developing time
temp too high
conc too strong

Question 3

what causes a blurred image?

Answer 3

movement of - pt, image receptor, xray tube

Question 4

what causes a lead pattern?

Answer 4

film exposed through the back of the packet = image of the lead foil

Question 5

what causes a partial image?

Answer 5

collimator not at centre

manual processing - not enough developer - image only partly submerged

Question 6

what causes fogging?

Answer 6

storing in adverse conditions
film out of date
film exposed to white light

Question 7

what causes black lines?

Answer 7

bending of film

Question 8

what is a static mark?

Answer 8

black star bust appearance - static electricity discharge

Question 9

what are chem marks caused by?

Answer 9

chems splashed on film before processing
dev - dark
fix - clear

Question 10

green tint caused by?

Answer 10

insufficient fixing

Question 11

double exposure caused by?

Answer 11

2 images superimposed

Question 12

white lines on a psp?

Answer 12

scratched

Question 13

white areas of edge of psp?

Answer 13

phosphor coat de laminating

Question 14

Areas of white burnout?

Answer 14

psp underexposed

or plate exposed to light before processing

Question 15

what causes a grainy digital image?

Answer 15

underexposed

Question 16

what causes a fine zigzag?

Answer 16

dust in psp scanner at level of laser

Question 17

paler finger shape?

Answer 17

finger print

Question 18

curved darker area corner of CCD?

Answer 18

damage to photocells in solid state sensor

Question 19

paler portion of image?

Answer 19

caused by bend across PSP

Question 20

marble effect?

Answer 20

PSP expossed to excessive heat