Practice Questions And Correct Answers

Flexographic Press Operator Certification Level III (Advanced) Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which advanced control method provides real-time press feedback by

monitoring ink laydown, dot structure, and color stability using automated cameras?

• Manual spectrophotometry
• Ink drawdowns
• Closed-loop color control
• Slur gauges

Closed-loop color control uses automated image capture and measurement to continuously correct color during production.

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• What is the primary purpose of GCR (Gray Component Replacement) in

advanced flexographic workflows?

• Reduce trapping issues
• Improve color stability by replacing CMY with K
• Increase dot gain
• Improve ink drying speed

GCR stabilizes neutrals by substituting CMY mixtures with black ink, improving consistency.

• Which anilox specification is most appropriate for extremely fine, high-

resolution vignettes?

• 400 lpi / 6 bcm
• 600 lpi / 4.5 bcm
• 900 lpi / 2.5 bcm
• 300 lpi / 10 bcm

A very high-line-count, low-volume anilox is required for ultra-fine tonal work.

4. Excessive plate bounce at high speeds most often results from:

• Low-viscosity inks
• Excessive impression pressure
• Too much drying air 2 / 4

• A coarse anilox

Too much impression pressure magnifies vibrations and causes plate bounce at speed.

• Which variable most directly affects ink film uniformity in high-speed

flexo printing?

• Dryer temperature
• Anilox cell geometry
• Substrate opacity
• Print cylinder width

Cell design affects how ink is released and spread across the substrate.

• When printing extended color gamut (ECG) work, which condition is

most important for accuracy?

• High viscosity
• Soft plate durometer
• Stable anilox volumes and tight ink density tolerances
• Increased impression pressure

ECG requires extremely stable color, which depends on consistent anilox and controlled ink densities.

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• In advanced troubleshooting, which defect is indicated by “haloing”

around text and fine lines?

• Ghosting
• Slur
• Excessive impression
• UV overcuring

Haloing results from too much impression pressure causing ink squeeze- out.

• Which drying technology provides the fastest curing on heat-sensitive

films?

• Infrared dryers
• Hot-air tunnels
• Gas dryers
• UV LED curing

UV LED curing produces little heat, ideal for heat-sensitive films.

• A sudden shift in register on only one color deck is most likely caused

by:

• Incorrect anilox engraving
• Loose print cylinder gears or sleeve slippage
• Low ink pH
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