Dynamic buffer for inserter system

An inserter system comprising:

• a first station operative to output personal inserts for inserting in envelopes;
• an inserter operative to insert said personal inserts in said envelopes;
• and
• a dynamic buffer operative to convey said personal inserts from said first station to said inserter, said dynamic buffer comprising a partition-less adjustable length conveyor and an inserter-interface conveyor,
• wherein said adjustable length conveyor conveys said personal inserts from said first station to said inserter-interface conveyor and said inserter grabs said personal inserts from said inserter-interface conveyor, and wherein said inserter grabbing said personal inserts determines a speed of operation of said inserter-interface conveyor, including a timing at which said inserter-interface conveyor grabs said personal inserts from said adjustable length conveyor and further comprising a controller that controls operation of said dynamic buffer and said inserter.