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Job Forwarding using JDF Product Description (Intent) Job Tickets

IP.com Disclosure Number: IPCOM000129238D
Publication Date: 2005-Oct-03
Document File: 2 page(s) / 29K

Publishing Venue

The IP.com Prior Art Database

Abstract

Peer to peer job forwarding between print devices can be used to balance workload among multiple printers. However there is no certainty that the forwarded job will print as expected on the print device that receives the forwarded job. Unpredictable results can occur for several reasons: 1) job programming can be modified by the user or programming print queue overrides, 2) printers may have different imaging behavior that is not controlled by job programming parameters, and 3) the printers may have different policies for handling missing or ambiguous resource references. Customers manage this risk by attempting to clone their printers to ensure that queue overrides, imaging settings, and policies are consistent. This cloning approach is workable when the printers are identical models, but less effective when the printers are non-identical models. The proposed invention is a mechanism for eliminating the need for operation interaction when forwarding jobs between Digital Front Ends (DFEs). This is achieved by using Job Definition Format (JDF) job tickets. Specifically, when forwarding a job, the DFE would forward the job with a JDF intent job ticket. This would be achieved by either preserving the original JDF intent job ticket or by reversing the initial JDF intent to JDF process mapping so that the device-specific JDF process job ticket can be turned into a device-independent JDF intent job ticket. The JDF intent job ticket will then be attached to the forwarded job.

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Job Forwarding using JDF Product Description (Intent) Job Tickets

Peer to peer job forwarding between print devices can be used to balance workload among multiple printers.  However there is no certainty that the forwarded job will print as expected on the print device that receives the forwarded job. 

Unpredictable results can occur for several reasons: 1) job programming can be modified by the user or programming print queue overrides, 2) printers may have different imaging behavior that is not controlled by job programming parameters, and 3) the printers may have different policies for handling missing or ambiguous resource references.  Customers manage this risk by attempting to clone their printers to ensure that queue overrides, imaging settings, and policies are consistent.  This cloning approach is workable when the printers are identical models, but less effective when the printers are non-identical models.

The proposed invention is a mechanism for eliminating the need for operation interaction when forwarding jobs between Digital Front Ends (DFEs).  This is achieved by using Job Definition Format (JDF) job tickets.  Specifically, when forwarding a job, the DFE would forward the job with a JDF intent job ticket.  This would be achieved by either preserving the original JDF intent job ticket or by reversing the initial JDF intent to JDF process mapping so that the device-specific JDF process job ticket can be turned into a device-independent JDF intent job ticket.  The JDF intent job ticket will then be attached to the forwarded job.

The invention is an enhancement of the current job forwarding implementation.  Rather than sending the current job ticket with forwarding jobs (if a job tickets is sent at all), the DFE would forward a device neutral representation of the job.  e.g.: a JDF intent job ticket. 

If the initial job received by the DFE had a JDF intent job ticket, the DFE would then retain this ticket and associate it with the forwarded job.  The JDF intent job ticket would be retained even after it had been translated into a JDF process job ticket.  In essence, the DFE would retain two job tickets with a given job: the JDF intent and the JDF process.  If the job were forwarded to another DFE, the system would forward the PDL along with the originally received JDF intent job ticket.  This mechanism would be functional for unattended printing in which the operator does not change any of the job parameters at the DFE. 

However, if the operator does change job parameters, then the possibility exists for...