Re: Howtek Pre-scan View Question

["Phil.Lippincott" <phil.lippincott@xxxxxxxxxxxxxxxx>]

Hi Harvey,

      I'm not a Trident expert, but I don't generally think lower resolution
screen scans with banding must be generated by software.  Your 4500 hardware has
many ways to be out of adjustment also to create banding.  The focused
illuminator can be out of focus or not centered; The aperture wheel could be
stuck on a small aperture even when scanning at low resolution; etc. etc.  You
can check the illuminator by using the scanner front panel buttons to do a
manual focus.  Move the carriage to a position over some clear spot on the drum
and; put the scanner in the transparency focus adjustment; Then move the mirror
level back so can view the focus through the "view finder or bomb sight"; if
when you look you see the bright part of the image anywhere except the center of
the view finder then this is wrong and it will definitely contribute to banding.
The optics alignment is adjustable as are almost aspects of your scanner.
Certainly as your question implies, software data buffer processing for USM,
Scaling or Rotation can cause similar things at data buffer boundaries, but
there is no reason to assume those kind of things must be the problem until you
have thoroughly checked the equipment.
      If you wish to discuss the Aztek's  hardware refurbishment and
certification or software alternatives that we have for your Howtek 4500
scanner, please don't hesitate to contact me directly at  phil@aztek.com   or
1-800-GRAPH-55

Best Regards and Good Luck
Phil Lippincott
Aztek.

SKID Photography wrote:

> In Trident 4.0 (with a Howtek 4500) in the pre-scan view, should I be seeing
> extremely obvious banding?
>
> I always assumed that this was normal, but now, I thought I'd ask.
>
> Harvey Ferdschneider
> partner, SKID Photography, NYC
>
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