What type of stock is compatible with a high speed laser printer?

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Is the base stock I'm going to personalise with a laser printer compatible with a high speed laser printer?

If it's gloss or with a coated finish then you've trouble on your hands - the ink won't absorb but will smear.

Anything thicker than 250gsm as well and you're pushing the machine to its limits.
If you really must use such thick stock types we'd need to obtain 200 sheets from you or your printer to run tests before committing to the work.