Appendix A
Technical Specifications
Paper
Since the quality of any particular brand or type of paper may be changed by the manufacturer at any
time, Epson cannot guarantee the quality of any type of paper. Always test samples of paper stock
before purchasing large quantities or printing large jobs.
Available paper types
Paper type Description
Plain paper
Weight: 60 to 90 g/m (Recycled paper is acceptable.
*
)
Envelopes No paste and no tape. No plastic window. (unless specifically designed for
laser printers.)
Labels The backing sheet should be covered completely, with no gaps between
labels.
Thick paper Weight: 121 to 220 g/m
Paper with letterhead Paper and ink of letterheads must be compatible with laser printers.
Weight: 91 to 120 g/m (Recycled paper is acceptable.
*
)
*
Use recycled paper only under normal temperature and humidity conditions. Poor quality paper may reduce print quality,
or cause paper jams and other problems.
Paper that should not be used
You cannot use the following paper in this printer. It may cause printer damage, paper jams, and poor
print quality:
❏ Media meant for other color laser printers, black-and-white laser printers, color copiers,
black-and-white copiers, or ink jet printers
❏ Previously printed paper by any other color laser printers, black-and-white laser printers, color
copiers, black-and-white copiers, ink jet printers, or thermal transfer printers
Epson AcuLaser MX21/MX20 Series User's Guide
Technical Specifications 272
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