bizhub c452 stripes on black

[JDR]

Re: bizhub c452 stripes on black

Same issue there.

issue.pdf


I would have bet on HV PWB 1 but a previous message said bad fix.

[Mr. Joshua]

Re: bizhub c452 stripes on black

Hi there

Replace the CCD assy
Thanks

For the less educated on here, this is nonsense. I can't stand watching time/effort wasted going down the wrong road.

[Mally]

Re: bizhub c452 stripes on black

Howzit guys. Pitch lines is very difficult to correct and in all cases I've seen it never totally went away. But u can improve the lines drastically. The problem is caused because the k drum is engaged when making a greyscale print, which in test mode halftone is 1PC black. But u will notice a 4PC black is much better because all drums are engaged. In a 1PC print, the transfer belt is too loose because of the 1 drum only and it causes pitch lines. Therefore when all 4 drums are used the print looks better because the transfer belt is tighter. To improve this,choose 2 colour on your printer driver using black and blue. Pls note this will now be considered a colour print, so advise customer. Cool

[habik]

Re: bizhub c452 stripes on black

Howzit guys. Pitch lines is very difficult to correct and in all cases I've seen it never totally went away. But u can improve the lines drastically. The problem is caused because the k drum is engaged when making a greyscale print, which in test mode halftone is 1PC black. But u will notice a 4PC black is much better because all drums are engaged. In a 1PC print, the transfer belt is too loose because of the 1 drum only and it causes pitch lines. Therefore when all 4 drums are used the print looks better because the transfer belt is tighter. To improve this,choose 2 colour on your printer driver using black and blue. Pls note this will now be considered a colour print, so advise customer. Cool

Well done.

Now wouldn't it be possible to adjust the slack on the paper loop so there is minimal drag like EarthKmTech suggessted?