Xerox 4890 Advanced Product Reference - page 80

USER CONSIDERATIONS

Throughput considerations related to highlight color

Highlight color printing introduces a number of new

considerations that have an impact on printer productivity.  To

maintain peak printer throughput, you need to make some

decisions concerning the order that color jobs are printed, when

to change the printing mode, and when to change the dry ink

color. 

Queue management

In addition to black, only one dry ink color may be loaded at any

given time.  Changing to a different color developer housing and

running print quality adjustment (PQA) takes a few minutes and a

large number of such changes in one day could create a

substantial decrease in productivity.  The queue management

feature helps you minimize the number of color developer

housing changes.  A report enters a queue according to the

attributes within the job.  Those attributes may include color and

finishing requirements.  The scheduling mode processes the

reports according to the attributes.

If each job name indicates the color required for printing, it

would be possible to use the HIP queue to release only jobs of a

certain color, one by one.

Ink substitution

For jobs that require a color substitution, there is an ink

substitution feature that allows an operator to substitute another

dry ink color in place of the one specified in the job.  

The ink substitution feature is useful for processing generic

queues, since the jobs in a generic queue may be printed in

whatever dry ink color is currently loaded.  These queues can be

processed without operator intervention by using SUB INK

CURRENT FOR COLOR ALWAYS.  This substitution must be

canceled before enabling a queue requiring a specific color. 

Ink mismatch

Ink substitution may also be used in the event of an ink

mismatch.  An ink mismatch occurs when a report requests the

use of a primary dry ink color not currently loaded.  A mismatch

can occur within a report and may be detected after print

processing has started.  When a mismatch occurs, the operator

has three options:

•

Substitute the currently loaded dry ink for the dry ink

requested by the job

•

Load the required dry ink housing and run PQA

•

Abort the job.

The decision of whether or not to substitute the currently loaded

dry ink in place of the requested dry ink may be based on

productivity requirements.  For example, you could specify that

dry ink be changed to match the job requirement only during

off-peak hours, so that during peak demand hours the currently

loaded dry ink would always be used despite any ink mismatch.

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XEROX 4890 HIGHLIGHT COLOR LPS PRODUCT REFERENCE