A4 Colour Printer is an amazingly compact yet reliable maximised reliability with less mechanical parts.

Superb printing quality caters to a wide printing needs from office to stores
Rich colour expression with LED printhead and IRect
EA-Eco toner for fine text and fine lines
Image enhancement technology reproduces smooth diagonal lines
Security for important information prevents information leakage with secure print
SMBv3/TLS 1.3 supported for secure communication
Connect to wireless LAN with WPA-Enterprise
Compact design fast printing 31ppm on A4 size 41PPM on A5 size
High-yield toner catridges
Security control by disabling Wi-Fi/NFC connection at the counter services or public spaces

Option
1.  Bypass Tray 50 sheets  Can feed various paper types such as envelopes and postcards
2. Standard Tray 250sheets Support various types & sizes of paper
3. Optional Tray 250 sheets Maximum 550 sheets paper capacity. Scalable for high-volume printing needs
4. Built-in NFC Start Print Utility application and place your mobile device over the NFC tag to print
5. Wi-Fi Direct Offers built-in wireless printing function

Difference between Z and DW
Z has optional extra 250 sheet tray - fast single pass dual head duplex scanner DQ doesnt have extra tray option
Image Registration Control Technology