For the MIB: on job recovery after power failure or a crash,
the value of xcmDocPrintCopiesCompleted may be set to a lower
value which would normally violate the SNMP constraints of a
Counter32 type.
ISO DPA: Copies-completed
This attribute indicates the number of complete copies of this
document that have been printed.
Some printers print multiple copies of each individual page of
a document, completing the printing of all copies at the same
time, printing as many of these pages as necessary to satisfy
the copy count. The value of copies-completed is 0 if printing
has not started for this document.