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Thread: Scratch problem in Plate

  1. #1
    Member alliswell is on a distinguished road
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    Scratch problem in Plate

    hai friends,

    In my Fuji V9600 CTP,IN THE PLATE OUTPUT I AM HAVING SMALL SCRATCHES IN THE PLATE HERE AND THERE.

    These scratches cannot be seen in the plate buy while printing visible.It comes even if i clean the processor .Can somebody help?Thanks

    alliswell

  2. #2
    Donor willie0869 is on a distinguished road
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    There are a few things I have seen, and they may not be coming from the processor at all. If you are using a plate stacker, the plates may be getting small scratches when they drop onto the stacker. If you are not already, try taping the separator sheets to the image side of the plate after processing. The scrub roller in the processor tends to cause small (almost invisible) scratches sometimes.

  3. #3
    Junior Member sellergameboy is on a distinguished road
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    I got the same issues last week, with small scratches around the plate after the processing, we thought it was the processors, but it was only happen with one size of plates, so we conclude that it was that size in particular, so we told our supplier to change them and we havent had any more problems.

  4. #4
    Member alliswell is on a distinguished road
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    True even I am having this scratch problem in 600x730 mm plate only,other sizes are ok
    The plate supplier is not accepting

  5. #5
    Moderator super silja will become famous soon enough super silja's Avatar
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    to be sure that you have problem with developer rotate plate for 90 degree,
    if you have scratches in moving direction you have problem with developer,
    if scratches are in same direction as before you need to contact plate supplier
    +-+-+-+-+-+ +-+-+ +-+-+ +-+-+-+-+ +-+-+-+-+
    |p|o|w|e|r| |t|o| |b|e| |y|o|u|r| |b|e|s|t|
    +-+-+-+-+-+ +-+-+ +-+-+ +-+-+-+-+ +-+-+-+-+

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  7. #6
    Junior Member sellergameboy is on a distinguished road
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    Quote Originally Posted by super silja View Post
    to be sure that you have problem with developer rotate plate for 90 degree,
    if you have scratches in moving direction you have problem with developer,
    if scratches are in same direction as before you need to contact plate supplier
    We also checked that, the scratches weren't in the same direction with the developer. so the supplier accepted and changed the plates.

  8. #7
    Junior Member Luca is on a distinguished road
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    Nice to know your problem was solved. We had a similar issue but the plates were being scratched in the processor. Our water was too hard and causing a mineral build up on the rollers which wasn't coming off when we cleaned the processor. We eventually figured it out and replaced the rollers and installed a water softener. Just FYI in case anyone else experiences a similar issue.

  9. #8
    Junior Member Pavlo is on a distinguished road
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    Quote Originally Posted by super silja View Post
    to be sure that you have problem with developer rotate plate for 90 degree,
    if you have scratches in moving direction you have problem with developer,
    if scratches are in same direction as before you need to contact plate supplier
    Not exactly
    Maybe problem is in the Luxell. Try rotate plate 180 degree at the input to CTP. If scratches is moving- the problem with plates

    2 alliswell Please, show any photo of problem.

  10. #9
    Junior Member shiv is on a distinguished road
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    i had the same problem with 560x670mm fuji plates where i get scraches at the tail. We use v9600ctp

  11. #10
    Junior Member Majestic12 is on a distinguished road
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    We had all sorts of scratches the past 7 years at work and it was nearly always because of manufacturing problems. You can get scratches from the plate stacker but this is only on the back side of the plate obviously - and once, we did have scratches caused by our CTP because of a software problem but generally, scratches are unlikely to be caused by your equipment - it's designed to keep anything sharp away from the plates and normally, nothing touches the actual surface except for the rubber rolls & brushes. Unless there's grit and sand in the brushes, it's unlikely that would be the cause.

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  13. #11
    Junior Member shiv is on a distinguished road
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    Quote Originally Posted by shiv View Post
    i had the same problem with 560x670mm fuji plates where i get scraches at the tail. We use v9600ctp
    Ah we resolved the problem it was not machine problem it was the problem with machine operator while he loading the plate the tail end of the plate rubbed on the rod between the blanket& plate cylinder now we made the operator to load the plate more carefully and the problem is gone

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