Konica 958 printing "zigzag" lines on barcode

[PSO Software Support]

I have a customer using a Konica 958 printer that is printing some barcodes with distorted bars / images.

This started 2 weeks ago. Multiple barcodes are sent in a single print job and only 1 of 20 barcodes prints this way.

53135

Can anyone offer suggestions as to what may be causing this issue and what we can try to fix it?

Thank you in advance.

[blackcat4866]

I'd think about the laser, though I must say that I've never changed a Minerva SBK laser before.

If you have another fuser you can try in there, do that first. I was reading about a Kyocera the other day with zig-zag lines of print, that was caused by an upper fuser roller bias contact. =^..^=

[Lordnixon]

Remove and install the latest drivers

[allan]

Looks like a type of moire effect. Wonder if its because of multiple lasers. If that's the case then its caused by the engine and a hardware effect. Wonder if a LPH would cause that.
Not sure if using different driver would make a difference. If using PCL try PS and visa versa.

Had this kind of thing on the pro 950 machines.

Is this causing issues when scanning the barcodes?