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Browse Prior Art Database

JAM CHECKING SENT TO A THIRD PARTY DEVICE

IP.com Disclosure Number: IPCOM000027465D
Original Publication Date: 1997-Feb-28
Included in the Prior Art Database: 2004-Apr-08
Document File: 2 page(s) / 100K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is an algorithm that delays the cycle down of an electrophotographic printing machine to ensure proper status of receiving a document at a third party finisher. The algorithm allows the third party device a pre-determined range of 10 milliseconds to 13 seconds to acknowledge that the document arrived from the machine's bypass transport. On machine cycle down, cycle-out software waits for all sheet deliveries before changing to an idle state.

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XEROX DISCLOSURE JOURNAL

JAM CHECKING SENT TO A THIRD PARTY DEVICE U. S. C1.355/321 Barbara A. Sampath

Proposed Classification

Int. C1. G03g 21/00

24

I I +/

GENERATE SIGNAL

TRIGGER SOFTWARE

WAIT FOR LOW

ELSE THEN

34 1 32 1 \_j WAIT FOR HIGH I I FAILURE

I OUTPUTSTATE I -7 --

36\

RETAIN A SOWARE

il,

fl __ I GOTO'TRIGGER v

I SOFTWAREMONITOR [

45 XEROX DISCLOSURE JOURNAL - Vol. 22, No. 1 JanuaryFebruary 1997

[This page contains 1 picture or other non-text object]

Page 2 of 2

JAM CHECKING SENT TO A THIRD PARTY DEVICE (CONT'D)

Proposed is an algorithm that delays the cycle down of an electrophotographic printing machine to ensure proper status of receiving a document at a third party finisher. The algorithm allows the third party device a pre-determined range of 10 milliseconds to 13 seconds to acknowledge that the document arrived from the machine's bypass transport. On machine cycle down, cycle-out software waits for all sheet deliveries before changing to an idle state.

A flowchart of the delay cycle down algorithm is shown in the accompanying figure. The procedure begins at step 10. A software queue of up to 32 sheets is retained at step 20 where all sheet information is stored. Sheet information is stored when a machine output interface he changes from a logic high state to a low state. The logic change indicates a sheet is being delivered to the third party device. A time stamp is applied, at step 22. The time stamp is stored with the sheet information and used to calculate a jam time. At step 24, a software signal is generated to indicate that the sheet is queue...