Product

• Kodak^® ThermoFlex^® Mid
• ThermoFlex Narrow

Background

Since each customer works with different screening, the calibration tests results may not be sufficient for flexo plates and you must perform final calibration.

The usual test files, listed following, are very large and only a small section (no more than 5 cm) is required. Use TIFF Assembler to crop the section that you need.

Requirements

• Flexo plate(s)
• Offset plate(s) if the configuration includes offset option
• Microscope
• Focus value obtained in the Focus Calibration Test
• Elevation tested and adjusted, as described in the Elevation Calibration Test
• Resolution value obtained in the Resolution Calibration Test
• Delay value obtained in the Delay Calibration Test
• Drum speed obtained in the Drum speed calibration test (for flexo plates)
• Laser uniformity tested and adjusted, as described in the Laser Uniformity Calibration Test

Note: For devices with a magnetic drum, use a plate of the same type that does not have the steel back. This type of plate is provided by the plate manufacturer for calibration purposes. If such a plate is not available, you will need to develop the plate to check for image quality.

Procedure

1. In the Hardware Tree, in the Database folder, open the Laser Info table.
2. Expose the cropped file ten times, with a different DDB factor each time, according to the following table:
   

   Diodes 48/24	DDB factor per test
   	1	2	3	4	5	6	7	8	9	10
   0	0	10	10		10	10		10	10
   1	0	7	7					5	5
   2	0	4	4
   45/21	0	4		4
   46/22	0	7		7				5		5
   47/23	0	10		10	10		10	10		10

3. Select the best results: the results with no slashes, patterns, or other artifacts.
4. If none of the results are perfect, browse to Xpose\Version\plt_calib\files and save the cropped file in the files folder.
   Note: The Xpose folder may or may not be on the C drive.
5. Perform a resuolution test, exposing the cropped file, which appears in the list. Use a range of ±15 of the current resolution, in 7 steps (each step increases by 5 microns).
6. Select the best result.
7. In the database, in the Res Table, enter the res motor step.

Technical contact(s)

Content owner: Viki Arviv
See the Escalation page for escalation contacts.

Date submitted

22 Jun 2004