Konica Minolta C6100 printing issue big white space in middle

[reckless]

What does this indicate having these streaks in middle? Its also got tiny streaks everywhere.
WhatsApp Image 2023-01-05 at 3.50.34 PM.jpgWhatsApp Image 2023-01-05 at 3.50.33 PM.jpg

[khaled_abosere3@yahoo.com]

Please print a halftone for each color for more diagnosis.

Sent from my CPH2239 using Tapatalk

[reckless]

Please print a halftone for each color for more diagnosis.

Sent from my CPH2239 using Tapatalk

So I printed an 8.5x11 and it printed fine. But when printing larger 12x18 paper 350gsm its giving that problem. How do I print halftone of each color?

[reckless]

We printed the test page from printer and it came out perfect.

Recently about a week ago I updated fiery, we usually print stored jobs using much older fiery software. Could that cause the issue?

[reckless]

Letter size test pages coming out perfect:
WhatsApp Image 2023-01-09 at 5.38.21 PM.jpgWhatsApp Image 2023-01-09 at 5.39.40 PM.jpg

12x18 coming out like crap:
WhatsApp Image 2023-01-09 at 5.39.27 PM.jpg

Can this be related to Adobe? We are using Illustrator and Acrobat

[Markks]

So I printed an 8.5x11 and it printed fine. But when printing larger 12x18 paper 350gsm its giving that problem. How do I print halftone of each color?

To print a sample of each color go into service mode > test print > print test target 43. print it in full color and on 12x18. this will let you know which color is having truble

[tulintron]

What does this indicate having these streaks in middle? Its also got tiny streaks everywhere.
WhatsApp Image 2023-01-05 at 3.50.34 PM.jpgWhatsApp Image 2023-01-05 at 3.50.33 PM.jpg

I believe that this transfer failure has to do with the condition that the paper is in. It tests the same format with other types of paper, other weights.

[reckless]

We checked paper in an OKI color laser printer and its printing fine. So I dont think its paper. I printed test on thick stock:
WhatsApp Image 2023-01-12 at 10.55.07 AM.jpg

Also printed from other paper trays and got this on regular stock??
WhatsApp Image 2023-01-12 at 11.30.39 AM.jpg

Not sure what is going on?

[reckless]

So the problem keeps migrating. See today's prints.
WhatsApp Image 2023-01-12 at 5.34.06 PM.jpgWhatsApp Image 2023-01-12 at 5.37.01 PM.jpg

[Markks]

We checked paper in an OKI color laser printer and its printing fine. So I dont think its paper. I printed test on thick stock:
WhatsApp Image 2023-01-12 at 10.55.07 AM.jpg

Also printed from other paper trays and got this on regular stock??
WhatsApp Image 2023-01-12 at 11.30.39 AM.jpg

Not sure what is going on?

With it being all colors I would suspect its something in the 2nd transfer assembly. You could run a test target 53 with black at 255 density and all other colors set at 0 density. then print black only and stop machine before it completes 2nd transfer and see what image looks like on transfer belt. If it looks good and solid black on transfer belt then you would know for sure that you have a 2nd transfer problem