1 - Measurable Print Characteristics

Question 0

Low density is a ________ colour and a high density is a ________ colour

Answer 0

Light, dark

Question 1

What colour would reflect the most then least amount of light?

Answer 1

White - the most

Black - the least

Question 2

What is the highest possible density?

Answer 2

4.0

Question 3

How many colour can a densitometer ONLY measure?

Answer 3

4

Question 4

What are the 4 colours a densitometer can measure?

Answer 4

C M Y K

Question 5

What is a densitometer not good at reading?

Answer 5

Light colours, metallic colours, Pantone colours

Question 6

What process colours make green?

Answer 6

Cyan, yellow

Question 7

What process colours make red

Answer 7

Magenta, yellow

Question 8

What process colours make blue?

Answer 8

Cyan, magenta

Question 9

When a colour is significantly higher in density compared to the others colours, the colour is said to be ________

Answer 9

Pure

Question 10

What colour is the purest colour

Answer 10

Yellow

Question 11

What colour has the lest amount of errors in colour ?

Answer 11

Yellow

Question 12

What is the colour sequence of our basement press

Answer 12

K C M Y (darkest to lightest)

Question 13

What is wet ink trapping?

Answer 13

Wet ink film printed ontop of wet ink film

Question 14

What is the average ink film thickness?

Answer 14

5 um ( micrometers)

Question 15

What is Ink Trap?

Answer 15

The ratio if an ink film on top of another ink film compared to if the ink was just in paper by itself

Question 16

When plotting ink film density on line graph what happens on the graph and why?

Answer 16

The line plateaus.

Because colour pigment won’t get darker no matter how thick the film is. It stays stagnant after a certain point.

Question 17

What’s the most important layer in ink trapping

Answer 17

Second-down colour (must measure how much ends up on-top of first printed ink)

Question 18

There are more customer complaints on________

Answer 18

Colour

Question 19

What are the two reasons why customers complain about the colour

Answer 19

1. hard to control

2. Very subjective

Question 20

What do you HAVE to know to calculate ink trap?

Answer 20

Colour sequence

Question 21

Give an example of dot sharpening/ dot loss

Answer 21

When 75% patch prints as a 72% dot on sheet

Question 22

Cyan is the absence of

Answer 22

Red (won’t reflect any red/orange)

Question 23

Magenta is the absence of

Answer 23

Green (has some indigo/violet)

Question 24

Yellow reflects _________ _______ but no _________ _______

Answer 24

1. Red, orange

2. Blue, green

Question 25

What colour has the greatest amount of hue error?

Answer 25

Magenta

Question 26

What colour has the least amount of hue error?

Answer 26

Yellow