Proofing & Contract Proofing Flashcards

In G7 proofing, the P2P (Print to Paper) target is primarily used to:

Answer: Measure tone response (NPDC) across the CMY gray scale for G7 verification

The P2P target contains CMY gray overprint patches that enable measurement of the Neutral Print Density Curve used in G7 calibration and verification.

How does G7 define 'near-neutral' gray balance on a proof or press sheet?

Answer: Colorimetrically neutral appearance verified by spectrophotometer in CIELAB

G7 defines near-neutral gray balance colorimetrically — CMY overprints must appear visually neutral as measured in CIELAB coordinates by a spectrophotometer.

If a G7 contract proof fails colorimetric verification, what is the recommended first corrective action?

Answer: Investigate and adjust the proofer's linearization and rebuild or refine its ICC profile

Linearization and ICC profile accuracy are the primary software variables controlling proof color; these should be addressed before any hardware changes.

The Neutral Print Density Curve (NPDC) in G7 is constructed from measurements of:

Answer: A tonal scale of CMY gray overprint patches spanning highlight to shadow

The NPDC is built from CMY gray overprint patches spanning the full tonal range, representing how neutral grays reproduce from highlights through shadows.

What does 'proof-to-press correlation' measure in a G7 quality control workflow?

Answer: How closely production press output matches the colorimetric values of the approved contract proof

Proof-to-press correlation quantifies how well production printing matches the approved contract proof, typically expressed as ΔE values between corresponding measured patches.

In a G7 workflow, who has the authority to approve the contract proof before production printing begins?

Answer: The client or their authorized representative

The contract proof represents a commitment to the client; approval authority rests with the client or their designated representative before production proceeds.

Which capability in color management software allows a G7 practitioner to compare proof measurements against GRACoL or SWOP reference characterization data?

Answer: ΔE reporting and spectral comparison against loaded reference characterization data sets

Color management applications with ΔE reporting can load standard reference characterization data such as GRACoL 2013 or SWOP 2013 and compare measured proof values directly against them.