Search for rfc3805. It contains the information that you need. In that document you can find the meaning of the OIDs.
Your OID 1.3.6.1.2.1.43.11.1.1.X.1.Y (I substituted in X and Y) will select the values as follows
X - a row in a MIB table - one for each supply
Y - a column in a table - these mean
1 - Supplies index (unique ID)
2 - Marker Index (associated PrintMarker subunit ID)
3 - Colorant Index
4 - Class - see PrtMarkerSuppliesClassTC in the rfc (is this a supply that is consumed or a receptacle that is filled)
5 - Type - see PrtMarkerSuppliesTypeTC in the rfc (toner, ink, etc.)
6 - Description - see PrtLocalizedDescriptionStringTC
7 - Supply Unit - see PrtMarkerSuppliesSupplyUnitTC (unit of measure for Max Capacity and Supplies Level)
8 - Max Capacity - max value of level if supported, -1 means "other", -2 is unknown
9 - Supplies Level - the remaining level/space (receptacle) if supported, -1 = other, -2 = unknown, -3 = some level/space remaining