GMI Monitoring & Reporting Tools 2

Question 1

Which device measures the optical density of ink on a printed substrate?

Accepted Answer

Densitometer

Answer

A densitometer measures optical density by quantifying the amount of light absorbed by printed ink.

Question 2

In GMI certification, what does a 'press fingerprint' report establish?

Accepted Answer

Baseline color and tone reproduction characteristics of a specific press

Answer

A press fingerprint documents the baseline tone reproduction curves, dot gain, and color output specific to that press under standard conditions.

Question 3

What is the purpose of a control strip on a printed press sheet?

Accepted Answer

To provide measurable targets for monitoring ink density and dot gain

Answer

Control strips contain standardized patches that allow quality technicians to measure and monitor ink density, dot gain, and color accuracy across a press run.

Question 4

Which ISO standard specifically addresses measurement and calculation of print quality attributes in offset lithography?

Accepted Answer

ISO 12647-2

Answer

ISO 12647-2 defines process parameters for offset lithographic printing, including ink density, dot gain, and color tolerances.

Question 5

In a monitoring report, a Delta E (ΔE) value is used to express what?

Accepted Answer

Color difference between a measured value and a reference target

Answer

Delta E quantifies the perceptual difference between two colors, with lower values indicating closer agreement to the target.

(GMI) Graphic Measures International Certification Practice Test

(GMI) Graphic Measures International Certification Practice Test

GMI Monitoring & Reporting Tools 2