Xerox 6279 User Manual - page 129

Immediate Image Overwrite

At most installations, users are able to recall the last copy or scan job and all the

associated settings. The recalled image(s) then can be printed without rescanning the

originals. This is the case when the Image Recall function (discussed above) is enabled.

Security concerns in some work environments might require that the image recall feature

be disabled so that sensitive materials are eliminated from the Accxes controller hard

drive.

NOTE

Immediate Image Overwrite cannot be enabled if either Job Reprint or

Administrator-Managed Queue features are enabled.

Once the Immediate Image Overwrite (IIO) feature is enabled, images that are scanned

in are immediately deleted from the Accxes hard drive. In addition, the administrator

can go a step further to enable On Demand Image Overwrite (ODIO), which restarts the

system and completely eliminates from the hard drive files that are already scanned in

and files that are scanned in the future.

1. Select Machine Info from the Services menu screen.

The Machine Information screen displays.

2. Select the Administration tab.

3. Select General Administration.

4. Select the Enable / Disable Immediate Image Overwrite.

The Set Immediate Image Overwrite Mode screen displays.

5. Select Enabled or Disabled.

See Online Help in Web Printer Management Tool for more details about using the

Immediate Image Overwrite feature.

Immediate Image Overwrite Algorithm

The overwrite algorithm for both IIO and ODIO conforms to the U.S. Department of

Defense Directive 5200.28-M (Section 7, Part 2, paragraph 7-202), and is common to

all WorkCentre/WorkCentre Pros and Accxes controllers.

The algorithm for the Image Overwrite feature is:

• Pattern #1 is written to the sectors containing temporary files (IIO) or to the entire

spooling area of the disk (ODIO). (hex value 0x35 (ASCII “5”)).

• Pattern #2 is written to the sectors containing temporary files (IIO) or to the entire

spooling area of the disk (ODIO). (hex value 0xCA (ASCII compliment of 5)).

• Pattern #3 is written to the sectors containing temporary files (IIO) or to the entire

spooling area of the disk (ODIO). (hex value 0x97 (ASCII “ú”)).

• 10% of the overwritten area is sampled to ensure Pattern #3 was properly written.

The 10% sampling is accomplished by sampling a random 10% of the overwritten

area.

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 6279

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 Wide Format Solution

Copy/Scan User Guide

System Administration