1. 720c_18p.exe Driver
2. README.TXT File Contents

README.TXT Driver File Contents (720c_18p.exe)

TechJET 720C Postscript Language Compatible Firmware Option
	( File: readme.txt	Version 1.8 8/29/96 07:33:42 )
	(       Firmware version '1:20')

To install the firmware, please refer to "Installing Options" chapter of
the Reference Manual shipped with this option. If you did not previously
have the PostScript capability in your TechJET 720C plotter, installation
will require you to remove the right hand cover in order to install the
FLASH module, and also to install extra RAM memory if you only have the
standard 4M byte RAM. You will need at least 8M total RAM for PostScript.

If you already have the PostScript Option, the letter "P" will be the 
second to last character of the version displayed on the control panel 
during the power-on process. If this is blank, then you do not have the 
PostScript option and must perform the full install.

Once the FLASH module is in place, the firmware can be upgraded from the
diskette by the command:

	A:UPGRADE <enter>	if your 3.5" diskette drive is A:,
	    or,
	B:UPGRADE <enter>	if your 3.5" diskette drive is B:	


			RAM Requirements.
Plotting PostScript files on the TechJET 720c requires a minimum of 8 Mbytes.
Some complex files may require more RAM memory. The reference manual has
some guidelines for memory requirements vs. type of application plot.

	Information Since the Printing of the Reference Manual.

		New Windows Driver.
The version of the Windows 3.1 driver is 4.30 at the time of release
of this version of the PostScript Language Compatible Option firmware.
Also, the version of the Windows '95 driver is 3.30 as of this time.
If you have an earlier version of the Windows driver, you may wish to
upgrade to the latest version. Colors from applications that use CMYK
colors (like Corel Draw) will be improved when using the "Auto Color"
driver option.

The latest Windows driver is available from CalComp's Web page on the
Internet. The "URL" for CalComp on the web is "http://www.calcomp.com",
or files may be downloaded from the FTP server using anonymous FTP from
"gateway.calcomp.com". The latest driver is also available from CalComp's
free BBS. The phone number is 714-236-3045. Modem setting should be 8 data
bits, 1 stop bit, no parity. If you cannot access the BBS, our Technical
Support Hotline can ship an update diskette.

		Windows Communication Problem.
Windows does not communicate correctly using the serial (COM) ports from
the driver. In the Control Panel/Printers/Connect menu, select LPT ports
instead of the COM ports. The data transmission is quicker than serial
communication and is more reliable.

		Using PPD Files with Windows Applications
Most applications will access the margin information from the driver or 
the PPD automatically. However, other applications reference the PPD
files, rather than getting information from the CalComp Windows Driver
e.g., MacroMedia Freehand, Adobe Illustrator, Quark XPress, and Adobe
PageMaker. Consult the Help or documentation for the application to
determine the proper location for PPD information. The following table
may assist you in determining the proper directory to store PPD files
for example versions of these popular applications.

	Freehand 4.0		C:\FH4\USENGLISH\PPDS
	Illustrator 4.1		C:\AI4\PPD
	PageMaker 6.0		C:\PM6\RSRC\USENGLISH\PPD4
	XPress 3.2		C:\WINDOWS\SYSTEM

In general, many newer applications consult the "C:\WINDOWS\SYSTEM"
directory for PPD's, and it will not impact your system to copy the
PPD files to this directory.

		Image Area -- Loading Media
Since the PostScript language is a page description language, many 
applications will generate PostScript data that selects the intended
page size. Since the margins of the TechJET 720C plotter are larger
than many printers, the application and "driver" software must use
the imageable area as specified in the "PPD" files provided with the
Windows driver, and on the MacIntosh diskette.  

The driver has no way of determining how the media is loaded in the plotter.
In order for the margin and page dimensions provided to the application
to be correct, the media must be loaded with the shortest edge of the
media (left to right) across the plotter. If the shortest edge of the media 
is less than 11 inches (279mm), then the driver assumes that the media is
loaded with the longer media dimension across the plotter.

In order to be able to actually print with margins as specified in the
user's guide, the paper must be loaded with the edge of the "pinch"
roller aligned to the edge of the sheet of paper. If you think that
part of the plot is missing from the edge, use a larger sheet of paper,
or re-load the same size sheet with the pinch rollers farther out toward
the edge of the sheet.

		Use of Scaling
The scaling option of the driver is used to increase or decrease the size
of the requested page. BOTH the page size and the image on the page are
increased or decreased by the scale factor. For example, to increase a "B"
size (11 inches by 17 inches) plot to "D" size (22 inches by 34 inches),
design the page in the application to fit the 11 inch by 17 inch page, then
set the scaling to 200%. A 17 inch by 22 inch page will be printed.

This allows large or very long plots to be generated from applications that
have limits to the page size.