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Hello TOM, Try -----www. pressparts.co.uk

Hello Andrei 83, So, this Streak appears at the same - x mm measure- from the Grip Edge on every CMYK Press Unit ? Have you printed a sheet of individual CMKY Colours ? Regards, Alois

Gentlemen, Erik Nikkanen. Being a member of this forum gives us all - "The Virtues of Engagement, Scrutiny and Scepticism" Regards, Alois

Hello Andrei , Does this "Streak" appear any where else in the print area ? Regards, Alois

Hello Erik, What about the Water(F.S.) that ...... Trespass onto the Image Areas ? Regards, Alois

Hello Andrei83, The white unprinted area is the "GRIP EDGE" of the sheet ? What are CMYK - Halftone % of the build ? and why are you using CMYK for a Black Image ? Mark on the next picture you post of the BLK (build) the - Horizontal Streaks that you see ! Regards...

Hello Andrei83, Post a decent size picture of the problem that you see on the Printed Sheet. Regards, Alois

smalloffsetpress, You would say that - being an American, but what you say is "Rubbish" Regards, Alois

Hello Correct Color (Colour) "All the processes that image passes through use the information in those pixels to reproducecolor". In what way does these "Pixels which are an integral part of a Bitmap reproduce CMYK Printer Separations ??? Are you talking about "Color Correction" for Printing...

Hello Erik, Judging by the views this post received, I doubt you will get any response from the American followers of this Forum, most of whom are not interested in the Technical Knowledge of Printing. Regards, Alois

Hello Anton, "Nothing helped" ! ! this is no answer, I suggest you list all the steps you have taken to "Eliminate this problem" 1) A picture of the Print Control Strip 2) A larger picture of the area covered by the pictures you posted Regards, Alois (Semi-redundant now)

Hello jbarrie, For what reason have not asked----- Heidelberg, these questions ??? Regards, Alois

Hello Harsh, Just ask Heidelberg, they will answer all the questions. Regards, Alois

Gentlemen, A Warning: be careful what you Re- print! Regards, Alois

Hello ssutton503, Have you checked the plates before mounting on the press? Your pictures show damage to the "Anodizing Layer" exposing the Aluminium, Ink would not cause this. Obviously, the damage caused on the Press. Regards, Alois

Hello ssutton503, 1)First step do as "Cornish" suggested. 2) Are the Scratches in the same place on the Magenta/Cyan plates, do these Scratches appear repeated "X mm" apart on the same Plate? 3) When you remove the Plate Inkers check for any Debris Build-up on the Cross Tie Bar in the Inking...

Hello Anton, In the Sheetfed/Web Offset Discussion, read the PDF I posted in the Topic ....Ink Density Uniformity ....... post #11 Regards, Alois

Hello Anton, What sequence are you printing............... KCMY ?? Also, make sure YOU are not running excessive "Damp" on Units prior to the Cyan. A quick check for the correct Ink/Water Balance ..... Have a Press Crash Stop, check the Grip/Leading edge Plate for a 1 or 2mm wide...

Hello Anton, The problem looks like Paper Mottle, without changing anything on Press try printing different Paper Samples. Next - hold a blank "Sheet of the Job Paper" up to the daylight and see if it looks cloudy view? Have you checked the Roller settings? Regards, Alois

Hello Anton, Let us leave aside the Mechanics of the Anilox Inking. You need to have the "Conductitvy of the F.S. " checked by your Ink/ Pressroom Chemical/ Plate supplier! Question: IS the problem - you are seeing the "Cell Pattern" in the printed solid areas??? Regards, Alois