Canon BJC-250 - Manual (Page 64)

Storing a BJ Cartridge
Whenever you unwrap a BJ cartridge, you must either install it in the printer or store it in
the Ink Cartridge Storage Box to prevent the print head from drying and clogging.
1
When opening or closing the Ink Cartridge Storage Box, press in on the
release tab that locks the cover in place. Open the Ink
Cartridge
Storage Box.
2
You must insert the cartridge correctly or the storage box will not close.
The protective cap must be removed from the cartridge before you set it in
the storage box. Carefully set
the cartridge in
the storage
box.