DIS Print Production & Prepress 3

Question 1

What key advantage does Computer-to-Plate (CTP) technology offer over traditional film-based platemaking?

Accepted Answer

It images plates directly from digital files, eliminating the intermediate film step and improving accuracy

Answer

It allows full-color plates to be produced from a single RGB file without separation

Answer

It automatically converts all colors to Pantone spot equivalents before imaging

Answer

It produces plates capable of printing on flexible substrates without additional processing

Question 2

What is PostScript, and why is it significant in print production?

Accepted Answer

A device-independent page description language that mathematically describes text and graphics for consistent output on any compatible device

Answer

A proprietary file format for storing large photographic images with lossless compression

Answer

A color management system developed by Adobe for cross-device color accuracy

Answer

A compression algorithm designed to reduce the size of high-resolution print files

Question 3

In offset lithography, what is the primary function of the blanket cylinder?

Accepted Answer

Transferring the inked image from the plate cylinder to the substrate

Answer

Applying fountain solution to keep non-image areas of the plate ink-repellent

Answer

Maintaining consistent impression pressure across the full width of the press sheet

Answer

Controlling paper feed speed and sheet registration at the press infeed

Question 4

Which characteristic most precisely defines the PDF/X-1a specification?

Accepted Answer

All colors must be in CMYK or spot color only; no RGB, Lab, or device-independent color spaces are permitted

Answer

A PDF standard optimized for web distribution with embedded fonts and low-resolution images

Answer

An archival PDF format using lossless compression and optional color space support

Answer

A PDF standard that permits live transparency and layered objects for interactive documents

Question 5

Flexographic printing is most commonly used for which category of substrates and products?

Accepted Answer

Flexible packaging, labels, and corrugated materials such as plastic film, foil, and cardboard

Answer

Fine art reproduction prints on heavy textured rag paper

Answer

High-volume magazines and newspapers printed on coated publication stock

Answer

Short-run on-demand documents printed digitally in office environments

Question 6

What is the role of a color proof in the prepress production workflow?

Accepted Answer

Providing a reference sample that simulates the expected print result for approval before committing to a press run

Answer

Verifying that all Pantone swatches are correctly specified in the original design file

Answer

Testing that ink densities are within acceptable tolerances during the press makeready

Answer

Comparing an original piece of artwork against its digital scan for fidelity checking

Question 7

What does LPI (lines per inch) measure in the context of halftone printing?

Accepted Answer

The frequency of the halftone screen, determining how fine or coarse the dot pattern appears in the printed image

Answer

The number of ink droplets per inch deposited by an inkjet printhead

Answer

The scanning resolution used when digitizing original photographic artwork

Answer

The physical line spacing used in typographic and text layout specifications