Remove Black Patches in CSI Postman Delivery Slip [Solution] In Many days we are confusing about black patches in Postman Delivery Manifest, Whether these patches created by PDF Reader Software or Printer?… Yes. It is purely Printer Issue. we have two solution for the above issue. The replacement of Chip may solve the following problem also Remove Black Patches in the Postman delivery slip generated in CSI Environment No need to open & close the front door of the printer each and every time to taking printouts Source :- Potools How useful was this post? Click on a star to rate it! Submit Rating Average rating 0 / 5. Vote count: 0 No votes so far! Be the first to rate this post. Share WhatsAppFacebookTelegramTwitter