INVERTED SYNCHRONOUS TIMING BELT DRIVE SYSTEM
Original Publication Date: 1992-Oct-31
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
Present day copiedprinter machines are designed such that one or more of the processing stations may be included in a process unit or cartridge which is removable from the main body of the copier for replacement by a new unit when its life is exhausted or for replacement by a different unit having different capability, such as, the developer housing. Some machines drive the photoreceptor and developer housing with a gear train which is opened each time the photoreceptor and developer customer replaceable units (CRU's) are removed for replenishment, and when the upper part of the clamshell copier housing is opened for other purposes. In order to allow the drive to be reliably "broken" and restored, pivoting idler gears are provided. These idlers are mounted so that the driving torque to the CRU's driven gears draws the idlers into mesh. This is conventional design whenever a gear train may need to be opened, as in many copiers which use a clamshell architecture for jam clearance.