Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Results 1 to 5 of 5
  1. #1
    Senior Tech 250+ Posts
    Join Date
    Sep 2010
    Location
    mashad
    Posts
    261
    Rep Power
    0

    790 plotter image quality problem

    My quality images intermittently become bad but I don;t know the cause or causes of this quality problem(my machine HP T790 plotter)
    I guess because of following causes but please introduce me about troubleshooting this problem.
    1- cloging and entering air into the plotter heads(vaccum problems)
    2- use old charge ink bottle for more than 2 years
    3- misconfiguring paper weight 170 gram china coated paper into heavy coated paper on the panel or because of bad paper quality
    4- other causes


    thanks a lot for your suggestion and solutions described
    please introduce and explain your solutions01.jpg02.jpg03.jpg04.jpg05.jpg
    Attached Images Attached Images
    Last edited by akbareshghi; 09-18-2016 at 05:17 PM. Reason: tests
    Color printing with lowest cost per page is my love.

  2. #2
    Senior Tech 100+ Posts
    Join Date
    Nov 2013
    Location
    Sydney
    Posts
    155
    Rep Power
    24

    Re: 790 plotter image quality problem

    I would start by fitting a set of genuine inks and purging the ink tubes. Next I would try the print heads.

  3. #3
    Senior Tech 250+ Posts
    Join Date
    Sep 2010
    Location
    mashad
    Posts
    261
    Rep Power
    0

    Re: 790 plotter image quality problem

    test quality is good on plain paper but when i printed one templated full color large size on the coated ,then image quality go bad
    please help me
    Color printing with lowest cost per page is my love.

  4. #4
    Service Manager 1,000+ Posts
    790 plotter image quality problem

    Kiran Otter's Avatar
    Join Date
    Dec 2013
    Posts
    1,050
    Rep Power
    54

    Re: 790 plotter image quality problem

    Contact whoever makes your 3rd party inks and ask them why that is. Otherwise, put in genuine HP ink cartridges, purge the old ink from the tubes, and start from there.

    Kiran

  5. #5
    Service Manager 1,000+ Posts theengel's Avatar
    Join Date
    Nov 2011
    Location
    North Bend
    Posts
    1,780
    Rep Power
    51

    Re: 790 plotter image quality problem

    Your yellow is dropping out. You probably have air in the lines and/or printhead. Also, probably contaminated ink in several colors.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Get the Android App
click or scan for the Copytechnet Mobile App

-= -= -= -= -=


IDrive Remote Backup

Lunarpages Internet Solutions

Advertise on Copytechnet

Your Link Here