What should I avoid using to prevent damage to the printer?

Do not use paper or print media designed for inkjet printers, as HP LaserJet products use fusers to bond dry toner particles at extreme heat, and inkjet paper could damage the product. Also avoid using envelopes with clasps, snaps, windows, wrinkled labels, or raised/metallic letterhead. Using non-HP media that does not meet specifications may require repairs not covered by the Hewlett-Packard warranty.

From the official HP Laserjet Pro P1606 Printer manual, page 32

People also ask

Why shouldn't I use inkjet paper in my LaserJet Pro P1606?
Do not use paper or print media designed for inkjet printers, as HP LaserJet products use fusers to bond dry toner particles at extreme heat, and inkjet paper could damage the product. Also avoid using envelopes with clasps, snaps, windows, wrinkled labels, or raised/metallic letterhead. Using non-HP media that does not meet specifications may require repairs not covered by the Hewlett-Packard warranty.
What types of envelopes can damage my HP LaserJet Pro P1606 printer?
Do not use paper or print media designed for inkjet printers, as HP LaserJet products use fusers to bond dry toner particles at extreme heat, and inkjet paper could damage the product. Also avoid using envelopes with clasps, snaps, windows, wrinkled labels, or raised/metallic letterhead. Using non-HP media that does not meet specifications may require repairs not covered by the Hewlett-Packard warranty.
What types of envelopes can damage my HP LaserJet Pro P1606 printer?
Do not use paper or print media designed for inkjet printers, as HP LaserJet products use fusers to bond dry toner particles at extreme heat, and inkjet paper could damage the product. Also avoid using envelopes with clasps, snaps, windows, wrinkled labels, or raised/metallic letterhead. Using non-HP media that does not meet specifications may require repairs not covered by the Hewlett-Packard warranty.
Will using non-HP media void my printer warranty?
Do not use paper or print media designed for inkjet printers, as HP LaserJet products use fusers to bond dry toner particles at extreme heat, and inkjet paper could damage the product. Also avoid using envelopes with clasps, snaps, windows, wrinkled labels, or raised/metallic letterhead. Using non-HP media that does not meet specifications may require repairs not covered by the Hewlett-Packard warranty.
What happens if I use the wrong type of media in my LaserJet printer?
Do not use paper or print media designed for inkjet printers, as HP LaserJet products use fusers to bond dry toner particles at extreme heat, and inkjet paper could damage the product. Also avoid using envelopes with clasps, snaps, windows, wrinkled labels, or raised/metallic letterhead. Using non-HP media that does not meet specifications may require repairs not covered by the Hewlett-Packard warranty.

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