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Browse Prior Art Database

Copy Production Machine Controls

IP.com Disclosure Number: IPCOM000086835D
Original Publication Date: 1976-Nov-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Hubert, WL: AUTHOR [+2]

Abstract

A copy production machine, having an exit tray and a timing wheel indicating image cycles, turns off automatically in response to a tray-full signal. The weight of copies made and in the exit tray indicates whether or not additional copies may be received by the exit tray through the copy exit.

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Copy Production Machine Controls

A copy production machine, having an exit tray and a timing wheel indicating image cycles, turns off automatically in response to a tray-full signal. The weight of copies made and in the exit tray indicates whether or not additional copies may be received by the exit tray through the copy exit.

When an operator removes copies from the exit tray, a natural inclination is to press down on the tray. This action actuates the tray-full signal. In order to prevent a spurious copy production machine turnoff, a predetermined number of image cycles must occur during the time each tray-full signal is active before the machine is turned off. The tray-full signal is sensed at a predetermined portion of a timing wheel cycle, e.g., at time EC23. AND circuit A1 passes the EC23 signal whenever the weight-sensitive switch S supplies a tray-full signal to increment the counter for counting the number of cycles the tray-full signal has been continuously active.

When the counter has counted a Predetermined number of image cycles, it enables AND circuit A2 to pass the A1 AND circuit output signal for stopping the copy production machine. As an example, the counter may be a modulo-two counter, such that, on the second successive cycle, AND) circuit A2 is enabled to pass the stop signal.

AND circuit A3 resets the counter whenever a spurious closing of switch S occurs. The NOT circuit N inverts the tray-full signal for enabling AND circuit A3 to pass eac...