RE: Lexmark Z65 4800 DPI printer

["Laurie Solomon" <laurie@advancenet.net>]

<x-charset Windows-1252>Well, you do make some good points as does Paul.  As, I said earlier, I am
willing to admit that I may be wrong; but I also felt an obligation to give
some of the reasoning behind my statements.  At this stage, until further
information becomes available, I guess we really do not know if step motors
for moving paper can or cannot effectively and cost efficiently be made to
move the paper in small accurrate increments or not, given that in a scanner
it can move the sensors along guide rails in small precise increments.  I am
certainly open to correction and learning if the higher specs are the
governing ones for the wide dimension of the media or not.

-----Original Message-----
From: owner-epson-inkjet@leben.com
[mailto:owner-epson-inkjet@leben.com]On Behalf Of SKID Photography
Sent: Tuesday, June 04, 2002 5:02 PM
To: epson-inkjet@leben.com
Subject: Re: Lexmark Z65 4800 DPI printer


But on an inkjet printer (as opposed to a scanner), you are essentially
using
two different types of stepping motors.  One moves the paper, and the other
moves the ink heads along the paper.

I believe that Epson partially achieves the highest dpi numbers (along the
direction that the print head travels) by 'double' printing (at least 2
passes).

Whereas moving the paper along extremely small (and accurate) increments is
more
difficult to achieve, hence the lower resolution.

Harvey Ferdschneider
partner, SKID Photography, NYC


"Paul D. DeRocco" wrote:

> That would make sense to me, especially for scanners. Making smaller CCD
> elements is a big deal; making a stepper motor move in finer increments
> isn't.
>
> --
>
> Ciao,               Paul D. DeRocco
> Paul                mailto:pderocco@ix.netcom.com
>
> > From: Laurie Solomon
> >
> > It could be that I have it backwards; but that is not my
> > understanding.  My
> > understanding is that the higher number in both the case of scanners and
> > printers reflects the long edge of the media and typically is a
> > multiple of
> > the lower number for the short edge that is a result fo the stepper
motor
> > which either puches the paper thru the device in steps or runs the
scanner
> > sensors or printhead down the media.
>
> -
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