CISis the abbreviation ofContact Image Scanner

With Canon's innovative and patented CIS technology, the N-Series of scanners are extremely slim and compact, making it suitable for both offices and homes. The extremely low-power consumption of these SlimLine scanners makes it possible for the USB-models to be powered by the USB cables, eliminating the need for a bulky A/C adaptor, thus reducing the number of (wall) power sockets to be used.
The latest SlimLine N-Series come with 3 EZ-Buttons (tm) to simplify tasks like multiple photo-scanning and scan to e-mail, to one-touch operations!

CCDis the abbreviation ofCharged Coupled Device

CCD scanners such as Canon's D-Series scanners have the ability to scan three-dimensional subjects, making it convenient to scan small objects on the scanner. In addition, most of the D-Series scanners have optional or integrated film scanner adapters, so users can scan their negatives or film directly.

With the two technologies and various levels of resolution, you can select the model most suitable for your needs.