Printing and mailbox system for shared users with bins almost full sensing

In a mailboxing system adapted to receive respective plural print jobs of plural printed sheets of respective different plural users of a shared users printing and mailboxing system, electronic printer for printing respective plural print jobs of plural printed sheets of respective different plural users of said printer, with a printer mailbox system connected to said electronic printer to receive said print said mailboxing system having multiple individual print job storage mailbox bins of a limited preset maximum sheet stacking capacity, and said mailboxing system further having a sheet distribution system for automatically variably directing and stacking into different said individual mailbox bins electronically assigned to different respective users the respective plural print jobs of the different plural users, the improvement comprising:

• a bin almost-full sensing system for detecting and signaling upon its actuation that the stacking level of printed sheets in an individual said mailbox bin is has reached a preset almost-full level which is approaching but less than said preset limited sheet stacking capacity,
• said bin almost-full sensing system providing a bin almost-full signal when said sheet stacking level in said individual mailbox bin has reached said preset almost-full level,
• and a mailbox control system controlled by said signaling from said bin almost full sensing system to indicate that only a preset limited further number of said printed sheets may be directed to that same said individual mailbox bin upon the actuation of said bin almost-full sensing system,
• said mailbox control system controlling said sheet distribution system to direct a subsequent print job from said sheet distribution system which would exceed said preset limited further number of said printed sheets to a different said mailbox bin.