.\"	$Id: fax2ps.1,v 1.4 2006-04-20 12:17:19 dron Exp $

.\"

.\" Copyright (c) 1991-1997 Sam Leffler

.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.

.\"

.\" Permission to use, copy, modify, distribute, and sell this software and 

.\" its documentation for any purpose is hereby granted without fee, provided

.\" that (i) the above copyright notices and this permission notice appear in

.\" all copies of the software and related documentation, and (ii) the names of

.\" Sam Leffler and Silicon Graphics may not be used in any advertising or

.\" publicity relating to the software without the specific, prior written

.\" permission of Sam Leffler and Silicon Graphics.

.\" 

.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 

.\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 

.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  

.\" 

.\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR

.\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,

.\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,

.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 

.\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 

.\" OF THIS SOFTWARE.

.\"

.ds Ps PostScript

.if n .po 0

.TH FAX2PS 1 "November 2, 2005" "libtiff"

.SH NAME

fax2ps \- convert a

.SM TIFF

facsimile to compressed \*(Ps\(tm

.SH SYNOPSIS

.B fax2ps

[

.I options

] [

.I file ...\&

]

.SH DESCRIPTION

.I fax2ps

reads one or more

.SM TIFF

facsimile image files and prints a compressed form of

\*(Ps on the standard output that is suitable for printing.

.PP

By default, each page is scaled to reflect the

image dimensions and resolutions stored in the file.

The

.B \-x

and

.B \-y

options can be used to specify the horizontal and vertical

image resolutions (lines/inch), respectively.

If the

.B \-S

option is specified, each page is scaled to fill an output page.

The default output page is 8.5 by 11 inches.

Alternate page dimensions can be specified in inches with the

.B \-W

and

.B \-H

options.

.PP

By default

.I fax2ps

generates \*(Ps for all pages in the file.

The

.B \-p

option can be used to select one or more pages from

a multi-page document.

.PP

.I fax2ps

generates a compressed form of \*(Ps that is

optimized for sending pages of text to a \*(Ps

printer attached to a host through a low-speed link (such

as a serial line).

Each output page is filled with white and then only

the black areas are drawn.

The \*(Ps specification of the black drawing operations

is optimized by using a special font that encodes the

move-draw operations required to fill

the black regions on the page.

This compression scheme typically results in a substantially

reduced \*(Ps description, relative to the straightforward

imaging of the page with a \*(Ps

.I image

operator.

This algorithm can, however, be ineffective

for continuous-tone and white-on-black images.

For these images, it sometimes is more efficient to send

the raster bitmap image directly; see

.BR tiff2ps (1).

.SH OPTIONS

.TP 10

.BI \-p " number"

Print only the indicated page.

Multiple pages may be printed by specifying

this option more than once.

.TP 10

.BI \-x " resolution"

Use

.I resolution

as the horizontal resolution, in dots/inch, of the image data.

By default this value is taken from the file.

.TP 10

.BI \-y " resolution"

Use

.I resolution

as the vertical resolution, in lines/inch, of the image data.

By default this value is taken from the file.

.TP 10

.B \-S

Scale each page of image data to fill the output page dimensions.

By default images are presented according to the dimension

information recorded in the 

.SM TIFF

file.

.TP 10

.BI \-W " width"

Use

.I width

as the width, in inches, of the output page.

.TP 10

.BI \-H " height"

Use

.I height

as the height, in inches, of the output page.

.SH DIAGNOSTICS

Some messages about malformed 

.SM TIFF

images come from the

.SM TIFF

library.

.PP

Various messages about badly formatted facsimile images

may be generated due to transmission errors in received

facsimile.

.I fax2ps

attempts to recover from such data errors by resynchronizing

decoding at the end of the current scanline.

This can result in long horizontal black lines in the resultant

\*(Ps image.

.SH NOTES

If the destination printer supports \*(Ps Level II then

it is always faster to just send the encoded bitmap generated

by the

.BR tiff2ps (1)

program.

.SH BUGS

.I fax2ps

should probably figure out when it is doing a poor

job of compressing the output and just generate 

\*(Ps to image the bitmap raster instead.

.SH "SEE ALSO"

.BR tiff2ps (1),

.BR libtiff (3)

.PP

Libtiff library home page:

.BR http://www.remotesensing.org/libtiff/