Protection system for electrostatographic machines
Patent 4227798 Issued on October 14, 1980. Estimated Expiration Date: 
August 14, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 14, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3624295 3810129 Programmable controller for controlling reproduction machines Programmable controller for controlling reproduction machines Programmable controller for controlling reproduction machines Patent #: 4120034 InventorAssigneeApplicationNo. 05/933325 filed on 08/14/1978US Classes:399/9, DIAGNOSTICS365/222, Data refresh399/77, Programmed714/815Time delay/interval monitoredExaminersPrimary: Braun, Fred L.Attorney, Agent or FirmInternational ClassG03G 15/00 (20060101)AbstractAn electrostatographic type copying or reproduction machine incorporating a programmable controller to operate the various machine components in an integrated manner to produce copies. The controller carries a master program bearing machine operating parameters from which an operating program for the specific copy run desired is formed and used to operate the machine components to produce the copies programmed. A multiple prioritized interrupt system is employed to distribute the operating program to the machine. In particular, upon periodic interruption, control data is output (refreshed) to the various machine components and failure to refresh within a preset interval inhibits machine operation. | |
