Browse Prior Art Database

Document Feeder Control

IP.com Disclosure Number: IPCOM000041121D
Original Publication Date: 1987-Aug-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Bustamante, LA: AUTHOR [+2]

Abstract

In a copier having a recirculating automatic document feeder (RADF), a number of subsystems (air system, movable document stack table, set separator finger, etc.) are initialized to an operative condition before copying starts. If a jam subsequently occurs, in either the document feeder or the copier, the document feeder's subsystems are conditioned to be reinitialized, depending upon the type of jam that has occurred.

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Document Feeder Control

In a copier having a recirculating automatic document feeder (RADF), a number of subsystems (air system, movable document stack table, set separator finger, etc.) are initialized to an operative condition before copying starts. If a jam subsequently occurs, in either the document feeder or the copier, the document feeder's subsystems are conditioned to be reinitialized, depending upon the type of jam that has occurred.

The copier is provided with a microprocessor and a number of control programs. As each document feeder subsystem is initialized, a program flag is set indicating that initialization of that subsystem has occurred.

If a jam subsequently occurs, one or more of these flags are reset, as is determined by a control program and by the type of jam that has occurred. A cathode ray tube (CRT) display instructs the human operator how to go about clearing the jam as a sequence of manual intervention steps.

When the operator has completed the manual intervention steps, the start button is depressed. The document feeder does not immediately restart, but rather, it goes through a reinitialization procedure, depending upon which of the flags have been reset by the jam.

Anonymous.

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