Digital BW, The Print

Just to add that the 1900 has the same problem.
Its a design compromise issue, not a build quality problem.

At least when both rollers are engaged the print quality on these 1.5pl
printers is excellent.

Just need to use a bit longer paper than before. I am using A3+ cut in half.

Mike

2008/9/9 pr_roark <pr_roark@...>

>   >... Epson 1400 ... paper registration error (basically means
> > that it will print perfectly up until it reaches the last couple
> > of inches of the page and then the printer will not hold the
> > paper in place while it finishes printing so
> > the bottom of your page may not be aligned properly...
> >... common fault (known as a paper registration error) and
> > can be fixed easily ...
>
> Common but not easily fixed might be more accurate.
>
> The problem seems to be that at the very bottom of the page printers
> rely on the exit rollers for paper tranport. These exit rollers are
> often -- if not always -- not up to the job. The printers with
> the "vertical" (relative to the paper) head alignment have more of a
> problem because the distance between the main rollers and exit
> rollers is greater. The trough where the head runs used to be very
> narrow. Now it's grown to about 1 3/4 inch due to the space some of
> the new or vertically positioned heads need. In the older printers
> we could totally disable the exit rollers to avoid pizza wheel marks
> and not have any effect on the print, at least if you didn't tell the
> driver to center the 8x10 image on letter size paper. You can't do
> this on the printers with these large gaps between rollers. I've
> noticed the problem on not only the cheaper printers, including the
> 1400, but also the 1800.
>
> The bottom line is that on a number of newer printers a 9 x 7 inch
> print on letter size paper may be the maximum that will really be
> good.
>
> Have you noticed that if you simply print an 8 x 10 image on letter
> size paper, and do not tell the driver to center it, the bottom
> margin will be larger than the top? There is a reason for this.
>
> I don't know if the problem can be fixed. Epson either has to put
> more serious exit rolers on printer (messing up the glossy prints) or
> go back to the narrow, horizontally placed heads (slowing up the
> printing speed -- and Epson's sales).
>
> It's possible some of these printers are built worse than others and
> show more of the defect, but I think it's a design problem with many
> Epson printers.
>
> The solution is to have very substantial bottom margins if you want
> to avoid microbanding there. In fact, the 1.5 pl printers seem to
> also have a slight problem at the top of the page. It seems to be
> less of a problem (narrower), but the paper transport is so critical
> that having both sets of rollers engaged is where the best printing
> occurs.
>
> Paul
> www.PaulRoark.com <http://www.paulroark.com/>
>
> 
>


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