"Paper Stretch Compensation" option
This section is relevant only if "Automatic Paper Stretch Compensation" (APSC) is used. This is where you define how the TIFF files will be submitted from the Prinect Cockpit to APSC. You will find more details about this in the Online Help of APSC.
"Use Paper Group as Job Group" option and "Job Group" list box
APSC works with job groups to assign characteristic curves. These groups are set up in APSC. For an automated workflow, the job groups can be set up so that their names match the printing material groups in the Prinect Cockpit.
•Enable option: Enable the option if the job groups in APSC match the printing material groups in the Prinect Cockpit.
•Disable option: Disable the option if the job groups in APSC do not match the printing material groups in the Prinect Cockpit. Apart from that, select the correct job group in the "Job Group" list box.
"Device ID" list box
This lists all the machines that were set up in APSC. Select the machine on which paper compensation will run.
"First Printing Unit (Front)" and "First Printing Unit (Back)" list boxes
This is where you select which printing units will be used for front and back. The first printing unit may run empty. In this case, select "2" in "First Printing Unit (Front)".
"Compensation on imagesetter (only for HEIDELBERG imagesetters)" option
APSC can send this task to the imagesetter for faster calculation (stretching) of the TIFF files (only possible with HEIDELBERG imagesetters).
•Enable option: Enable the option if you do not use a HEIDELBERG imagesetter.
•Disable option: Disable the option if you use a HEIDELBERG imagesetter that will calculate the TIFF files.
APSC needs information about the paper (grammage, grain direction, etc.) for assignment of the characteristic curves. This information can come either from the printing material table or from the ImpositionOutput sequence. We recommend that you use the data from the printing material table. This approach is more reliable and there is less to set up in the sequences. This requires that the printing material table is kept up-to-date.
•"Use Master Data, else Error" option
All the paper data are taken solely from the printing material table. The sequence aborts if an item of information is not found.
•"Use default values, if necessary" option
All the paper data are first taken from the printing material table. The values from the sequence settings are used if an item of information is not found. See "Paper Default Values" group.
•"Always Use Default Values" option
All the paper data are taken from the sequence settings. See "Paper Default Values" group.
"Compensation required" option
A characteristic curve is expected as a matter of course if this option is enabled. If this is not the case, the sequence aborts. It ensures that jobs are not processed without compensation. When creating characteristic curves, it must be disabled.
"Individual Compensation" option
In individual compensation, misregistration is recorded for a specific job and saved to APSC. "Individual Compensation" must be enabled to use the saved measurement data sets during a renewed plate output.
In addition, the saved measurement data sets must be selected in the "Front" and "Back" list boxes. If only one side is to be compensated, you must select "-----" for the other side (if you do not, compensation aborts).
You must define the paper properties in this group if either "Use default values, if necessary" or "Always Use Default Values" is enabled in "Paper Properties".
These paper properties (grain direction, paper grade, width, height and grammage) are sent to APSC and used for selection of the characteristic curve. You should check these data for each job because an incorrect compensation can be the result if you do not.
The settings have no impact on the "Use Master Data, else Error" option. In this case, the paper data from the paper master database are used.
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