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Restarting Interrupted Copy Production

IP.com Disclosure Number: IPCOM000086389D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 3 page(s) / 53K

Publishing Venue

IBM

Related People

Hubbard, JH: AUTHOR [+3]

Abstract

During the operation of a copy reproduction machine, events may occur causing the machine to stop prior to successful completion of the present copy run. Such events may include the machine running out of copy paper, a paper misfeed, or the machine copy exit pocket filling to capacity. It is desirable that when any one of these events or other similar events occur, the interrupting condition be rectified and the copy run resume from the point of interruption.

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Restarting Interrupted Copy Production

During the operation of a copy reproduction machine, events may occur causing the machine to stop prior to successful completion of the present copy run. Such events may include the machine running out of copy paper, a paper misfeed, or the machine copy exit pocket filling to capacity. It is desirable that when any one of these events or other similar events occur, the interrupting condition be rectified and the copy run resume from the point of interruption.

Similarly, the exit pocket filling or the exhaustion of the paper supply may occur coincidentally with the completion of the present copy run. In this instance, the copy run complete condition takes precedence over resumption of control.

The diagram illustrates the use of two latches STOP-1 and STOP-2 to easily accomplish control of normal starting and interruption restarting.

In the normal startup of the copy machine, a power-on-reset signal (POR) sets STOP-1 latch and resets STOP-2 latch through OR circuits 0-17 and 0-24, respectively. AND circuit 11 then allows input from the keyboard to be loaded into the copy select register. Copy select register contains the number of copies to be made from a particular original document. After the machine is started, a copy counter counts the number of sheets of copy paper introduced into the paper path. When compare circuit recognizes an equality between the select register and the copy counter, a stop signal is supplied over line 15. This signal sets STOP-1 latch via AND circuit A6 and OR circuit 17.

The copy machine then discontinues introduction of paper into the paper path and terminates operation of other parts of the machine through other control logic. Whenever the machine is started (or restarted) when the copy counter is reset, the start is delayed for machine start-up procedures to be effected. Such delayed start resets STOP-1 latch via OR circuit 20 and sets STOP-2 latch via OR circuit 21. Subsequently, when a new copy run is initiated, AND circuit A26 resets the copy counter so that a new copy run can be counted, compared, and terminated at the appropriate time.

A copy run can also be normally terminated by two other means. If the operator depresses the Stop button, normal termination is assumed setting STOP-1 latch. Also, if in the duplex mode having made a second side, the duplex tray becomes empty, a normal stop is performed by setting STOP-1 latch via AND circuit A6 and OR circuit 17. Whenever STOP-1 latch is...