Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Paul Newman" <vk4apn@...> wrote:
>
> My faithful HP 1020 is printing shadows, blotches and several versions 
> of what I am trying to print out on the same page!!!  Cleaning 
> procedures etc have failed to fix - so its time for a new laser.  I use 
> it to print layouts on LaserStar(?) film only, then to the UV box.  
> Have been happy with quality of print of old unit but thought I would 
> check feedback from others on the group.
> Thanks
> Paul vk4apn

Paul,
    This shadowing, blotching and double-up printing usually means
that the drum unit is past its use-by date. The cleaning blade used to
remove excess toner after transfer to the paper sheet is becoming hard
and no longer doing its job properly. Trying to find and fit a new
cleaning blade (neoprene usually) is almost impossible, so I would
suggest a new drum assembly. This is probably easier and cheaper than
trying to break in a new laser printer.

Regards,
Simon VK4TSC