Equipment Maintenance 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 Equipment Maintenance flashcards as text
Which cleaning solvent is most appropriate for removing dried UV-curable ink from a flexographic printing plate?
Answer: UV-compatible plate wash approved by the manufacturer
UV-curable inks require a UV-compatible plate wash specified by the manufacturer to avoid damaging photopolymer plate material.
During a preventive maintenance inspection of a large-format inkjet printer, technicians discover that the encoder strip is dirty. What symptom would this most likely cause?
Answer: Banding or misregistration in the print output
A dirty encoder strip causes the carriage motor controller to misread position, resulting in banding or misregistration artifacts.
A gravure press cylinder shows signs of pitting on the chrome layer. What is the recommended corrective action?
Answer: Re-chrome and re-engrave the cylinder
Pitting on a gravure cylinder's chrome layer compromises cell integrity and print quality, requiring re-chroming and re-engraving.
What is the primary purpose of performing a nip pressure test on an offset printing press?
Answer: To ensure uniform contact between blanket and impression cylinder
Nip pressure tests verify that the blanket and impression cylinder make uniform contact across the full width, preventing uneven print density.
An operator notices that the doctor blade on a flexographic press is leaving streaks. After replacing the blade, streaks persist. What should be checked next?
Answer: Anilox roller for damage or worn cells
Persistent streaking after doctor blade replacement typically indicates a damaged or worn anilox roller that must be inspected.
Which maintenance task is most critical for extending the service life of an inkjet printhead?
Answer: Performing regular purge and cap cycles when idle
Regular purge and capping cycles prevent ink from drying in the nozzles, which is the leading cause of premature printhead failure.
When lubricating press bearings during scheduled maintenance, what is the most important consideration?
Answer: Following the OEM-specified lubricant type and quantity
Using OEM-specified lubricants in the correct quantities prevents over-greasing, under-greasing, and chemical incompatibility that can accelerate bearing failure.