Primera LX610 Color Label Printer with Plotter & Cutter - Manual (Page 36)

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Knife Pressure affects how deep into the media the knife will cut. Ideally you want to cut deep
enough to cut through the label layer on the top but not so deep that you cut through the backing
paper (liner). When you cut through the backing paper your label will not peel cleaning off the
backing paper. You will also score the wear strip under the cutting knife which can cause the knife
tip to break. You will also need to replace the wear strip more often if you cut too deep.
By default, the cutter is calibrated to work with High Gloss Paper Media. However, other media
types will need more or less cut pressure to cut properly.
Each roll of media will have a recommended value to add or subtract from the default baseline
values used for Knife Pressure and Knife Stretch Factor. These values are listed below and printed
on a label attached to the inside of the core.
Knife Pressure Stretch Factor
High Gloss Paper 0 0
High Gloss BOPP 4 0
Magnetic 22 32
Knife Stretch Factor can be increased or decreased to compensate for different feed thicknesses
and textures of media. Thickness and texture can affect the feed speed of the media usually causing
it to feed more slowly than the baseline media (High Gloss Paper). This will cause the height/length
of your cut to be shorter. If you find that your cut height/length is longer or shorter than the height
specified in the PTCreate software, you may need to increase or decrease the stretch factor.
Increasing this value with create a longer cut. Decreasing it will create a shorter cut.
Adjusting Knife Pressure over time.
Eventually, the knife blade will begin to wear and require more cut pressure to cut at the same
depth as when it was brand new and sharper. Therefore, you may need to add cut pressure when
cutting any media even the High Gloss Paper.
To determine if cut pressure should be increased or decreased, follow these steps.
1. Print and cut 1 copy and then attempt to peel the label from the liner.
2. Check for tear. If the label tears when you remove it, you will need to increase the cut
pressure. Increase pressure in small increments to avoid over compensating and cutting
through the liner.
3. Check the liner. Once you peel up the label, check the liner. If it has been cut through,
decrease pressure.
4. Continue increasing or decreasing pressure until the label no longer tears when
removed or the liner is not cut through.