Orders placed by 4:00 PM MST get
SAME DAY SHIPPING
for items listed as in stock
Contact
Visit Precision Roller on Facebook
Follow Precision Roller on Instagram Follow Precision Roller on X Watch Precision Roller on YouTube Follow Precision Roller on Pinterest
Save Today by Signing Up for Special Offers on Printer Ink, Toner, and Supplies
Shop for printer toner and supplies Shop for printer toner and supplies
My saved printers My Printers ►
Or browse by model:


Featured Products
Hot Topics Border element for PR Glossary: Definition of CSU
Helpful Resources: Printer & Technology Information Border element for PR Glossary: Definition of CSU
Home ►
Glossary ►
Terms starting with C ►
CSU

Glossary CSU

Definition of CSU

CSU
1.  An acronym for contact sensor unit. Optical scanning unit containing light source (LED array), focusing rod, cover glass, self focusing lens, and device for converting optical image into electrical signals, which are sent to the modem. Also known as CIS (contact image sensor).
About Shopping Account
©2003-2025 Precision Roller. • 2102 West Quail Avenue, Suite 1 • Phoenix, AZ 85027 • (800) 323-9523 / (623) 581-3330 • M-F 7:30am - 5:00pm MST (noDST)
Individual brands are copyrighted by their respective owners. Precision Roller is in no way affiliated, sponsored or endorsed by these copyright owners or their affiliates or dealers.
This website uses a secure server to encrypt all sensitive information.

Questions?   Concerns?   Send us a note at webmaster@precisionroller.com