Brother MFC640CW - 6 ] Ink Supply Tubes

3-23 Confidential
[ 6 ] Ink supply tubes
These are made of an elastomer providing a highly impermeable barrier against air ingress and
drying out of the ink during extended periods of nonuse. This material is also soft and highly
flexible to better withstand the sharp and frequent bending associated with high-speed head
operation repeatedly over extended periods.