Process Control and Documentation Flashcards
7 cards from real GMI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Process Control and Documentation flashcards as text
Which measurement geometry is recommended by ISO 13655 for measuring printed color on coated substrates?
Answer: 0°/45° or 45°/0°
ISO 13655 recommends 0°/45° or 45°/0° geometry for reflectance measurement of printed materials to minimize the influence of surface gloss.
In SPC (Statistical Process Control) for printing, what does a point falling outside the control limits on an X-bar chart indicate?
Answer: A potential special cause of variation requiring investigation
A point outside control limits signals a special cause of variation—an unexpected event that warrants investigation and corrective action.
What is the purpose of a make-ready sheet in offset printing operations?
Answer: A test sheet used during press setup to achieve correct ink/water balance and registration before production
Make-ready sheets are printed during press setup to adjust ink density, registration, and ink-water balance before pulling production-quality sheets.
A PDCA cycle in quality management stands for:
Answer: Plan, Do, Check, Act
PDCA (Plan, Do, Check, Act) is a continuous improvement cycle used in ISO quality systems to systematically solve problems and improve processes.
In graphic arts, what does the term 'register' refer to?
Answer: The precise alignment of multiple color separations printed in sequence
Register refers to the accurate positional alignment of multiple ink layers so that each color prints in its correct relative position.
Which type of proof is considered the most accurate contract proof for predicting press output?
Answer: An inkjet proof produced using an ICC profile matching the target press condition
An ICC-profiled inkjet proof on approved media is the industry standard contract proof because it can accurately simulate a target press condition.
What does a slur gauge in a pressroom control strip detect?
Answer: Mechanical slurring or doubling of dots caused by improper press mechanics
A slur gauge (such as a star target or checkerboard pattern) reveals slurring or doubling artifacts that indicate mechanical problems like cylinder bounce or paper slippage.