CDT Performance Optimization 3 â Questions and Answers
Question 1: In digital printing, what is the primary purpose of calibrating the toner density curve (TRC)?
- To speed up RIP processing
- To ensure consistent color output across print runs (Correct answer)
- To reduce substrate static
- To align duplex registration
Correct answer: To ensure consistent color output across print runs
TRC calibration maps requested density to actual output density, ensuring repeatable color accuracy across different print runs.
Question 2: A workflow team notices that CPU utilization on their RIP server peaks at 100% during job submission bursts. The best solution is:
- Upgrade to faster storage drives
- Implement job queuing with a hot folder system (Correct answer)
- Reduce image resolution in all jobs
- Disable font caching
Correct answer: Implement job queuing with a hot folder system
A hot folder queuing system staggers job submission and smooths RIP load, preventing CPU saturation during burst periods.
Question 3: Which document characteristic most increases ink/toner consumption beyond the stated average coverage specification?
- Large solid fill areas and photographic content (Correct answer)
- High font count
- Multiple paper sizes in one job
- Embedded hyperlinks
Correct answer: Large solid fill areas and photographic content
Solid fills and photos have high per-page coverage, consuming significantly more toner than the typical 5% office document baseline.
Question 4: What is the benefit of using a Job Definition Format (JDF) ticket in a production workflow?
- It compresses PDF file sizes automatically
- It carries job parameters that automate press setup and finishing instructions (Correct answer)
- It encrypts document content for security
- It converts RGB images to CMYK
Correct answer: It carries job parameters that automate press setup and finishing instructions
JDF tickets carry complete job intentâmedia, quantity, finishingâenabling automated equipment setup and reducing manual intervention.
Question 5: When optimizing a workflow for on-demand short-run printing, which factor most reduces cost per page?
- Maximizing batch size to reduce changeovers
- Using a slower but cheaper engine
- Minimizing makeready waste and setup time (Correct answer)
- Printing on lighter weight substrates
Correct answer: Minimizing makeready waste and setup time
For short runs, makeready costs are amortized over fewer pages, so minimizing setup waste has the greatest impact on cost per page.
Question 6: A document center tracks 'click charge' costs. What does a click represent in this context?
- A mouse click in the print driver
- One impression (one side of one sheet) produced by the engine (Correct answer)
- One page of digital file processed by the RIP
- One staple applied by the finisher
Correct answer: One impression (one side of one sheet) produced by the engine
In production printing contracts, a 'click' is one engine impressionâone side of one sheetâwhich is the billing unit for consumables and maintenance.
Question 7: Which optimization technique reduces network bottlenecks when transferring large print-ready PDF files from prepress to a RIP?
- Using PDF/X-4 format
- Splitting files into individual page PDFs
- Storing files on a shared NAS local to the RIP (Correct answer)
- Converting PDFs to PostScript before transfer
Correct answer: Storing files on a shared NAS local to the RIP
A NAS on the same local network segment as the RIP eliminates wide-area network latency and maximizes file transfer throughput.
CDT Performance Optimization 3
In digital printing, what is the primary purpose of calibrating the toner density curve (TRC)?