Dolev 800 Punch Calibration with the Brisque

S. Avisror
January 26, 1997

Recently we have received a lot of questions from the field in regard to punch calibration with the Brisque. In order to simplify the punch calibration and reduce installation time, I am sending this document with a few "tips" that you can use during punch installations with the Brisque station.

Exposable Area Calibration
Exposable Area Calibration with the Punch Pivot Parameter - Bottom Center
Center Punch Unit Mechanical Adjustment to the Punch Pivot Parameters

Exposable Area Calibration

Create a full size format 812 mm x 1117 mm. Check that the entire image is exposed.

If the image width is less then 1117 mm, calibrate the following parameters:

• Reduce home margin width, end Margin width to 15 mm or less if necessary.
• Decrease the Roller parameter (plotter setting) so the roller will be at the edge of the film and will not interrupt with the laser beam.
• If the size of the film is less then 1188 mm when exposing full size 812 mm X 1117 mm, reduce the feeder offset parameter (plotter setting) to increase the width of the film (exposing direction).

Exposable Area Calibration with the Punch Pivot Parameter - Bottom Center

When calibrating the punch pivot to 820 H x 558 W mm, we need to check that the full size format can be exposed on film as described before. In order to activate the punch setting in the Brisque station, install first the center punch unit. There is no need to adjust this punch mechanically to the punch pivot parameters at this point.

• If the Brisque announces that the file exceeds the exposable area on the left side, add to the punch pivot (punch setting) in the width direction according to the massage.
• If the Brisque announces that the file exceeds the exposable area on the right side, subtract from the punch pivot width direction according to the massage.
• If the Brisque announces that the file exceeds the exposable area on the top side, subtract from the punch pivot height parameter.
• The parameter in the punch dialog (Brisque station) Òwidth offset Òshould stay "0".

All necessary adjustments in the width direction (exposing direction) should be adjusted via the punch pivot in the punch setting (Dolev 800). This is the safest way, thus when the customer uses different templates, the image will continue to stay in the center.

Center Punch Unit Mechanical Adjustment to the Punch Pivot Parameters

It is crucial that the center punch hole will match the punch pivot parameter, so that the image will be centered to the center hole.

If you follow this process from the beginning, you should have by now a full size image 1117 mm x 820 mm with the punch pivot parameter BC selected without any error massages. Now you can continue with the punch installation...

• Adjust the (round) center punch unit so the hole will be centered to the image in the width direction (1188 mm / 2 = 594 mm).
• Complete the punch installation.