toner for a Xerox 700i

[PaulNeB]

Hello, can someone please help?
What are the differences in the toner for a Xerox 700i
For example, there are different article numbers for the black toner 006R01375, 006R01378, 006R01383
Different filling quantities or what?

[xcopytech]

006R01375 metered toner
006R01379 DMO toner
006R01383 sold toner
Same toner, different toner chips, different markets