Re: [hylafax-users] New Windows client for Hylafax - fax service provider (HylaFSP)

[<sergesandler@optusnet.com.au>]

Lee,
We cannot control the Windows Fax Service, it is part of Windows 2000/XP,
and it produces tiff files, not PostScript files..
Serge

----- Original Message -----
From: "Lee Howard" <faxguy@howardsilvan.com>
To: <sergesandler@optusnet.com.au>
Cc: <hylafax-users@hylafax.org>
Sent: Wednesday, July 23, 2003 8:22 AM
Subject: Re: [hylafax-users] New Windows client for Hylafax - fax service
provider (HylaFSP)


> Even though the client may try to send a fax with high resolution and
> MR data compression, if the remote system does not support those, it
> will be sent with low resolution and MH data compression.  Thus, if the
> Windows Fax Service sends a TIFF to hfaxd that is not *exactly* how it
> must be for transmission purposes, faxq will reformat it, and possibly
> could lose image quality (if the conversion goes up).
>
> It would be better for Windows Fax Service to send a
> vector-drawn-PostScript file to hfaxd so that when faxq inevitably
> (re)formats it, that it will not lose any image quality.
>
> Lee.
>
>
> On 2003.07.22 15:10 sergesandler@optusnet.com.au wrote:
> > Lee,
> >
> > As Windows Fax Service produces a tiff file, there is no reason to
> > convert
> > it into PostScript before submitting it to the Hylafax.
> > What does 'it does not formatted properly for the fax session' mean?
> > The
> > resolution is set up by the command FSP sends to hfaxd.
> >
> > Regards,
> >
> > Serge
> >
> > ----- Original Message -----
> > From: "Lee Howard" <faxguy@howardsilvan.com>
> > To: <sergesandler@optusnet.com.au>
> > Cc: <hylafax-users@hylafax.org>
> > Sent: Wednesday, July 23, 2003 12:33 AM
> > Subject: Re: [hylafax-users] New Windows client for Hylafax - fax
> > service
> > provider (HylaFSP)
> >
> >
> > > On 2003.07.22 06:35 sergesandler@optusnet.com.au wrote:
> > > > There is a beta version of the fax service provider for Hylafax
> > > > available at
> > > > http://members.optusnet.com.au/~hssandler1/.
> > > >
> > > > This is a driver in Windows format to make use of Hylafax from
> > Windows
> > > > 2000/XP FAX Console, "Send Fax" wizard, Outlook or programmatic
> > > > interface.
> > > >
> > > > Please comment on the subject.
> > >
> > > Your site states:
> > >
> > > "Behind the scene, the fax service renders the document to be sent
> > into
> > > a tiff file, and the rendering is done with the high quality."
> > >
> > > "The above is the motivation for implementing the Fax Service
> > Provider
> > > (FSP) for HylaFAX to enable to use Windows Fax Service to send faxes
> > > via HylaFAX. This eliminates, in particular, a need for a PostScript
> > > printer and for conversion from ps to tif formats (having enhanced
> > > quality of the image as a side effect)."
> > >
> > > I think that you have misunderstood how faxq prepares facsimile
> > > documents.
> > >
> > > There is practically no way that the client program can know what
> > the
> > > ultimate session parameters (in particular resolution and
> > compression)
> > > will be, and so it is futile for a client program to attempt to
> > submit
> > > documents in a format in which it expects them to be transmitted.
> > >
> > > If the server receives a TIFF image file and it does not formatted
> > > properly for the fax session, faxq will convert it to PostScript
> > first
> > > and then back to TIFF.  This process sometimes causes a bit of image
> > > distortion... AND, if the resolution is going up, the facsimile will
> > > appear more "grainy" than it should need to.
> > >
> > > My recommendation would be to always submit documents in PostScript,
> > > which skips the first conversion step mentioned and (assuming all
> > > embedded graphics are vectorized) allows the image to be rendered at
> > > any resolution without any image quality loss.
> > >
> > > Lee.
> > >
> > >
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> > >
> >
>
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>


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