Cron UV CTP

Discussion in 'Platemaking' started by ziggy33, Jun 16, 2021.

Tags:
  1. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    Hello!

    I have a Cron 26H UV CTP machine that is leaving vertical lines on my plates sometimes its just one sometimes theres 3 to 5 of them all across my plate. Never in the same locale and I can delete them like its imaged on the plate. I have stumped the CRON tech that is in my area.

    Let me know!!
     
  2. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    Hello,

    Did you check the intensity of your diodes? Are they all in working order? To be seen (?) to calibrate the distance between the plate and the start of the light beam.
     
  3. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    I was shown nothing on this machine. I would check the intensity of the diodes if I knew how.
     
  4. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    Operate -> Check laser power
     
  5. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    I have the option of Laser power inspect. I have done that before but I don't know what im looking at when I do it.
     
  6. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    You initiate this operation. And on your dialog at the bottom it should appear 26 O. There is another letter that is a diode is no longer operational.
     
  7. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    this is what keeps happening
     

    Attached Files:

  8. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    Post a screenshot of your screen; are you using the lab?
     
    limon likes this.
  9. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    here is what it said after the Laser power inspect
     

    Attached Files:

  10. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    What strikes me as weird is that you only have 13 working diodes instead of 26. Your PTC is running at a speed reduced by two. Hence perhaps this explanation of the vertical lines.
     
  11. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    You have to redo a focus calibration. Or maybe a plate thickness problem. If after calibration still the same, your laser head is broken.
    Is your template well adjusted according to the plates you use?
     
  12. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    I have never done a focus calibration. What does that entail?
     
  13. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    The laser distance between the plate and the laser head
     
  14. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    What is it suppose to be at and how would I measure it?
     
  15. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    To do this, a CRON operator must intervene. Too complex if you don't know. Where are you from ?
     
  16. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    Rice Lake, WI USA
     
  17. JohnCaratteri

    JohnCaratteri Member

    Joined:
    Jun 2021
    Messages:
    11
    Location:
    France
    Too bad, I'm from France. You must contact a CRON technician in your area
     

  18. ziggy33

    ziggy33 Senior Member

    Joined:
    Jul 2010
    Messages:
    451
    Location:
    Rice Lake WI
    well thanks for your help
     
Loading...