Re: OT: WMF drawings from Docutech 135PS have thin and missing lines

[Dov Isaacs <isaacs@xxxxxxxxx>]

Eric,

It is actually the same issue and very well known, although
some slight differences. WMF drawings always have line widths;
they are probably set at a very small value if they came from
any AutoDesk program (such as AutoCAD). I do know that the
PostScript generated by AutoCAD's own PostScript generator (as
opposed to letting it use the system PostScript driver) yields
PostScript of the form "0 setlinewidth" which in PostScript means
"draw a single pixel line" which has the implications you note.
And of course, when you have a laser printer that was originally
engineered as a copier (as was the Docutech model in question),
the "write white is never quite right" problem rears its ugly
head in spades with these types of graphics!

        - Dov


At 3/7/2002 11:52 AM, eric.dunn@ca.transport.bombardier.com wrote:

>Not to take issue with DOV, but:
>
>Did you check the line width setting? We use WMFs and CGMs created from
>illustrations in AutoCAD.
>
>At first all seemed fine, until we printed and many line were too faint.
>Investigation showed that the AutoCAD drawings were not using any line weights
>for many line types. So effectively these lines were zero width. Looked fine on
>screen (1 pixel line width), looked acceptable in drafts off office laser
>printers (1/300" or 1/600 line width), started to disappear on final print
>(Docutech 1/1200" or 1/2400" line width). The "write white" issue was evident as
>the lines were faint and "ghosting". But, giving all the lines line weights
>removed all discernable problems.
>
>Eric L. Dunn


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