Xerox Corporation

Gerald C VerSchage

Bernard C Fisk

James M Donohue

David R Deetz

A programmable controller is used to control the operation of a xerographic reproducing machine adapted to run in a simplex or duplex mode whereby copies are made on either or both sides of web material fed in a single pass and then cut into individual copy sheets. The interval between successive image reproduction or pitch cycles can be determined by the programmable controller in accordance with manually entered input signals. The time sequence of control signals regulating the processing steps are altered to accommodate the altered cycle interval. In order to minimize the effects of noise produced by the xerographic processing environment, control signals as well as input device instruction signals are sampled a multiplicity of times and a composite result is determined before the storing or the execution of signal instructions.

Programmable controller for controlling reproduction machines

A programmable controller is utilized to control a reproduction machine for producing impressions of an original on a support material. The reproduction machine includes a photosensitive member and a plurality of discrete operating components mutually cooperable with the photoreceptive member to electrostatically produce the impressions. The programmable controller incorporates a computer which operates under the direction of a master program. The computer calculates timing signals in accordance with the program information and stores the timing signals in a memory for later actuation of the components in a properly timed sequence to produce the copies desired. The machine, under the direction of the computer, periodically checks the operability of at least one of the operating components in the interval between the timing signals. Similarly, the timing signals stored in the memory are periodically updated during the intervals between actuation of the operating components.

A programmable controller is used to control the operation of a xerographic reproducing machine adapted to run in a simplex or duplex mode whereby copies are made on either or both sides of web material fed in a single pass and then cut into individual copy sheets. A master program for operating the machine components to produce copies in accordance with the copy run instructions inputted by the machine user is provided. The master program includes a subroutine to place the user's copy run instructions in preselected order irrespective of the order in which the copy run instructions are received, such order being correlated with the order in which the originals are presented for copying. In a second subroutine the controller periodically performs housekeeping chores checking the operational status of the machine.

A programmable controller is used to control the operation of a xerographic reproducing machine adapted to run in a simplex or duplex mode whereby copies are made on either or both sides of web material fed in a single pass and then cut into individual copy sheets.

A programmable controller is used to control the operation of a xerographic reproducing machine adapted to run in a simplex or duplex mode whereby copies are made on either or both sides of web material fed in a single pass and then cut into individual copy sheets. A control program, comprised of a set of program instructions, enables the controller to generate control signals for actuation of the process devices of the reproducing machine in a timed manner for production of copies as directed by the operator. In response to instructions by the operator concerning copy length, copy numbers, etc., the control program permits the calculation of requisite timing information for control of the machine operating components. The control program permits the operation of the reproducing machine to concerning copy length, copy numbers, etc., the control program permits the calculation of requisite timing information for control of the machine operating components. The control program permits the operation of the reproducing machine to be responsive to the machine status in control of the machine operating components.

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Henrietta, NY, United States of America

Gerald C VerSchage