System and method for controlling the inserter chassis speed in an inserter system

A method for controlling an inserter system having a chassis for assembling mailpieces, the chassis operating cyclically with successive accumulations advancing at the end of each cycle, and a document feeder for feeding accumulations of documents to the chassis, the accumulations containing varying numbers of documents, the method comprising the steps of:

• operating the document feeder at a first speed, whereby accumulations are available for input to the chassis at varying intervals substantially depending upon the number of documents in corresponding accumulations;
• operating the chassis at a selected speed and periodically updating the chassis speed in dependence upon the number of documents in the corresponding accumulations in the document feeder;
• providing a control document in each mailpiece, the control documents each including data for determining a unique identification code;
• and
• storing a mailing control file, the mailing control file comprising a plurality of mailpiece records, each of the records including a plurality of fields, the fields containing data for controlling assembly of a mailpiece, and each of the records including one of the unique identification codes, whereby each of the records defines preparation of at least one corresponding mailpiece, the records also defining the number of documents comprised in each of the mailpieces;
• and
• controlling the assembling means to prepare the corresponding mailpieces in accordance with the records, wherein the records are generated by a data processing system and the computations for updating of the chassis speed are carried out off-line by the data processing system which then includes an indication whether the chassis speed is to be increased, decreased, or remain unchanged in each of the records, and the step of periodically updating the chassis speed is controlled in accordance with said indication.