Welcome To Signs101.com: Largest Forum for Signmaking Professionals

Signs101.com: Largest Forum for Signmaking Professionals is the LARGEST online community & discussion forum for professional sign-makers and graphic designers.

 


  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Vp540 strange banding

Discussion in 'Roland' started by wochi, Oct 29, 2009.

  1. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    Hello,

    i´m having some strange problems with my Roland.
    When printing a dark green for example it starts banding but with some kind of pattern.
    Like a gradient starting in lighter green and ending in darker green and then starting over again. 4/5 "stripes" to complete the cicle. anyone knows what cause this??
    thank you
     
    Tags:
  2. J Hill Designs

    J Hill Designs Major Contributor

    15,549
    16
    0
    Sep 24, 2004
    hows the nozzle check look?
     
  3. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    they look perfect. the print heads are all brand new
     
  4. Bigdawg

    Bigdawg Just Me

    7,459
    133
    63
    Jun 8, 2005
    Sunny Florida
    Could be the heads need cleaning... or your media has drag... try prefeeding it. But I bet if you clean the around the heads and run a medium clean... you'll see a definite change.
     
  5. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    i´m uploading a photo to illustrate better the problem.
    Prefeeding? not familiar with that term :Oops:
     
  6. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    it´s not very clear in the photo as it seems a "normal" banding. but it´s not. It makes a cycle. And this file has a gradient. I printed another file with no gradient but a darker green and it came out perfect :S
     

    Attached Files:

  7. Mainframe

    Mainframe Very Active Member

    take the file into photoshop & turn it into a raster.jpg & try it again
     
  8. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    i don´t think that´s the problem because i printed it before without problems..:banghead:
     
  9. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    other problem i have (don´t know if it has something to do with this) is when doing the Calibration ajustment, it doesn´t come out a perfect print and the second pass is not aligned with the first one.
     
  10. Bigdawg

    Bigdawg Just Me

    7,459
    133
    63
    Jun 8, 2005
    Sunny Florida
    You just answered your own question...
     
  11. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    why? the problem is that i can´t align. it´s not the "gap" between the passes. That you can ajust and that what the calibration test is for. The problem is that they are not aligned vertically. the "nozzles" get on top of each one in the same horizontal line
     
  12. Bigdawg

    Bigdawg Just Me

    7,459
    133
    63
    Jun 8, 2005
    Sunny Florida
    I totally did not understand that post... sorry....

    are you saying your banding is not running the same way the head is passing over? I am now confused (doesn't take much) but calibration adjustment on my VP540 would definitely be the first thing I looked at after cleaning and media feed.
     
  13. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    i understand that i´m not very clear when writting in english as it is not my mative language, so i have some difficulty in translating some specific terms. I will post a picture when i arrrive to the office so you can understand better. Let´s see if i can explain better.
    When doing the calibration test the printer makes two passes and the objective is to correct the gap between those passes wright? the problem is that the second pass is a litlle to the right compared to the first one, so even with a perfect ajustment in terms of gap, the nozzles are on top of each other.
    oh well..i think i did it even worse...lets wait for the picture :Oops:

    but thank you for trying to help. :notworthy:
     
  14. MachServTech

    MachServTech Very Active Member

    1,220
    5
    38
    Sep 19, 2008
    North Carolina
    Compare a print done with uni-directional. (carriage prints only in one direction)
     
  15. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    it was already printing in uni-direcional
     
  16. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    here are the photos
    [​IMG]
    i exagerated the constrast in photoshop so the problem is more visible. The diagonal lines are a file problem, thatsa not what i´m talking about. can you see the vertical lines? it makes a cycle. Darker/lighter/darker/lighter...banding usually is consistant, lines all over the print. i never got something like this. Standard quality uni dirrecional printing

    Calibration:

    [​IMG]


    [​IMG]

    this is the calibration problem. see the lines all messed up?? even in the "correct" ajustment..
     
  17. ProColorGraphics

    ProColorGraphics Very Active Member

    1,436
    88
    48
    Apr 1, 2009
    Minnesota
    My printer works fine and my calibration print looks like that. It does look like you should set it to .2 or .25 instead of .1 though.
     
  18. ProColorGraphics

    ProColorGraphics Very Active Member

    1,436
    88
    48
    Apr 1, 2009
    Minnesota
    I have also seem humidity and heater settings cause problems like this.
     
  19. wochi

    wochi Member

    155
    1
    0
    Jun 1, 2008
    i keep humidity at arround 50% in the room and the pinter heater is almost at max power. I use triangle inks
     
  20. gabagoo

    gabagoo Major Contributor

    5,724
    105
    63
    Oct 10, 2006
    Vaughan, Ontario
    heat? to much?
     
Loading...

Share This Page

 


Loading...