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Flashcards in 1 - Measurable Print Characteristics Deck (27):
0

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

White - the most
Black - the least

1

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

Light, dark

2

What is the highest possible density?

4.0

3

How many colour can a densitometer ONLY measure?

4

4

What are the 4 colours a densitometer can measure?

C M Y K

5

What is a densitometer not good at reading?

Light colours, metallic colours, Pantone colours

6

What process colours make green?

Cyan, yellow

7

What process colours make red

Magenta, yellow

8

What process colours make blue?

Cyan, magenta

9

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

Pure

10

What colour is the purest colour

Yellow

11

What colour has the lest amount of errors in colour ?

Yellow

12

What is the colour sequence of our basement press

K C M Y (darkest to lightest)

13

What is wet ink trapping?

Wet ink film printed ontop of wet ink film

14

What is the average ink film thickness?

5 um ( micrometers)

15

What is Ink Trap?

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

16

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

The line plateaus.

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

17

What's the most important layer in ink trapping

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

18

There are more customer complaints on________

Colour

19

What are the two reasons why customers complain about the colour

1. hard to control
2. Very subjective

20

What do you HAVE to know to calculate ink trap?

Colour sequence

21

Give an example of dot sharpening/ dot loss

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

22

Cyan is the absence of

Red (won't reflect any red/orange)

23

Magenta is the absence of

Green (has some indigo/violet)

24

Yellow reflects _________ _______ but no _________ _______

1. Red, orange
2. Blue, green

25

What colour has the greatest amount of hue error?

Magenta

26

What colour has the least amount of hue error?

Yellow