| Paul Asente 2003-12-21, 11:32 pm |
| I have some more ideas on what the problem may be.
Some printers have problems with printing rasters and vectors that
should be the same color as the same color. They apply enhancements to
the raster parts (believing them to be photographs) and then they no
longer match the vector parts.
Try this: Create a document with a large rectangle filled with the blue
used in the lakes. Create a small rectangle within it that is the same
color, and rasterize the small rectangle. Print it out and see if the
colors are the same. If they aren't, this is the problem. You may be
able to change the print dialog settings to eliminate this.
Since the map contains rasters with transparency (the rasterized path
and the two textured shapes), it has to be flattened before it can be
printed. Some pieces of the image that intersect the rasters have to be
rasterized because they interact with an object that contains
transparency. These rasterized areas may print out differently than the
vector objects that they abut.
One way to avoid this if you can't find printer settings that work is to
replace the transparent raster objects with opaque ones with clipping
masks. Eliminate the rasterized path, and recreate the two textured
regions as solid rasters with clipping paths.
Another possible option (that I don't necessarily recommend, but it may
work) is to ignore the problem. While raster color adjustment is common
on desktop printers, it shouldn't happen on the imagesetters that will
be used to print the final posters. On the other hand, if you plan to
distribute the map as a PDF that people may want to print themselves,
you may want to fix the problem.
-- paul asente
To reply, make the host be the same as my last name
In article <usenet-BC80EB.13352619122003@news03.west.earthlink.net>,
Paul Asente <usenet@not-asente.com> wrote:
[QUOTE][color=darkred]
> In article <gW2Eb.24273$m83.8117@fed1read01>,
> "Bob Hansen" <wildtrout@cox.net> wrote:
>
>
> I believe I've narrowed down the problem somewhat.
>
> There is a compound path at the bottom of the "Cleveland NF" layer that
> has a Rasterize effect. The boundaries of the resulting raster
> correspond to the artifacts that cross over the left and right blue
> Preserve areas. I don't see that this rasterize effect is doing
> anything constructive, so it can probably be removed.
>
> The lower artifact corresponds to the edge of the mauve raster for
> Populated Areas. Try printing with this layer removed. If that solves
> the problem, try creating a vector clipping mask for this layer and see
> if that works.
>
> *Why* it isn't printing correctly, I still don't know. It prints ok on
> my home b&w PostScript Laserwriter, and I don't have a color printer to
> try it on, so I can't tell for sure. I don't see any change in
> Overprint Preview mode, as someone suggested. One thing to check is
> whether you see the artifacts on screen if you select all and Flatten
> Transparency (I don't, but since I'm not seeing it in Overprint Preview,
> something else may be going on.)
>
> Hopefully, these suggestions will get you through your current problem.
> I'll follow up on it some more though.
>
> Yes, I created the Scribble effect for CS. I'm glad you think it's
> neat--I'm looking forward to seeing what people end up doing with it.
> My contributions to Illustrator were comparatively small for the CS
> release.
>
> -- paul asente
> To reply, make the host be the same as my last name
>
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