.png){kind=logo}
CMP Offset Print Certification Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf
- What is the primary printing principle used in offset lithography?
- Gravure pressure transfer
- Oil and water repellence
- Heat-reactive imaging
- Electrostatic charge
Answer: B
Rationale: Offset printing relies on the chemical separation of oil-based ink
and water on the plate surface.
- Which roller transfers ink from the plate to the substrate?
- Ductor roller
- Form roller 1 / 3
- Blanket cylinder
- Impression roller
Answer: C
Rationale: The blanket cylinder accepts image from the plate and transfers
it to paper.
- What is “dot gain"?
- Loss of sharpening
- Increase in halftone dot size
- Plate contamination
- Ink drying delay
Answer: B
Rationale: Dot gain is when printed halftone dots enlarge relative to the
intended values.
- What solution keeps non-image areas ink-free?
- Rewetting solution
- Softener solution
- Fountain solution
- Coating solution
Answer: C
Rationale: Fountain solution wets non-image areas to repel ink.
- Which plate type is most common today? 2 / 3
- Electrostatic
- Film-positive
- CTP thermal plate
- Manual coated plate
Answer: C
Rationale: Computer-to-plate thermal plates dominate modern offset
workflows.
6. pH of fountain solution typically ranges between:
A. 2.5–3.0
B. 8.0–9.0
C. 4.0–5.5
D. 6.5–7.5
Answer: C
Rationale: Acidic fountain solutions control dampening and plate
sensitivity.
- Which metric controls ink thickness on press?
- Optical density
- Substrate brightness
- Solid ink density
- Lab ΔH
Answer: C
Rationale: SID measures the amount of ink laid down through a
densitometer.
- / 3
.png)