Programmed copier control

摘要

A copy production machine controlled by a programmed computer in which the computer control programs include synchronous and asynchronous portions. The asynchronous portions are repetitively executed in loop form for checking operating components and servicing operator control panels. The synchronous portions are executed in timed relation to the operation of the machine. The execution of the programs is coordinated via a set of memory registers accessible by the computer during execution of both program portions.