Callout  | Item  | Callout  | Item  | 
|---|---|---|---|
[A]  | Bottle ID Chip Contact Board  | [C]  | Toner Bottle  | 
[B]  | ID Chip (One for Each Color)  | 
Each toner bottle [C] has an ID chip [B]. When the toner bottle [C] comes in contact with the bottle ID chip contact board [A], the machine detects that the toner bottle is set.