What to watch when the demo uses the vendor's own sample
On a demo that uses the vendor's own sample, watch whether the defect was printed in advance, whether the speed is yours, and whether the threshold is set from zero on the spot.
When the vendor runs a demo on their own sample, watch three things: whether the defect was printed in advance, whether the speed is your speed, and whether the threshold is set from zero on the spot. A sample that is too clean, with a defect that is too obvious, only shows that the software can draw a box. It does not show that the system will work after you buy it.
Why it is judged this way
Dirt on the demo roll is large and black. Any camera sees it. Ask them to put in a defect that is only just visible, or to switch to your sample. If they refuse, record this visit as an introduction, not as a passed trial.
What to compare
| What you see | What to call it | What not to do |
|---|---|---|
| A slight defect is reported at your speed | It has reference value | Treat it as acceptance |
| They only showed a large black spot | It only shows a box can be drawn | Write it into the comparison |
| They refuse your sample | This item has no data | Treat the refusal as the vendor being short-changed |
At job change or when a roll is opened
- Ask who made the defects on this roll.
- Ask to switch to your difficult roll.
- If they will not switch, do not give a pass.
