CGP-220  (260-1268)              Features              Faxback Doc. # 5803


The CGP-220 is a compact, "drop on demand" Ink-Jet Printer that can print
characters and graphics in seven colors: Black, Red, Green, Yellow, Blue,
Magenta, and Violet.

Some of its unique features include:

* Standard and Elongated Characters.
* High-speed printing--37 characters per second.
* Bit-addressable, minute graphics.
* 640 dots per line or high-resolution printing.
* Printing on plain single sheet paper or roll-paper.

The CGP-220 can also reproduce graphic displays from a TRS-80 Color 
Computer.  All you need, besides a 16K Color Computer, is the Radio Shack 
Color Computer Screen Dump Program. The Screen Dump Program allows the 
CGP-220 to accept graphic input from the Color Computer for printing in 
four colors.

Additionally, the CGP-220 has both serial and parallel interfaces for use
with any TRS-80 computer. Its large capacity Ink Packs let you print up to
4 million characters, and, finally, the CGP-220 operates at an unusually 
low noise-level. All these features set the CGP-220 apart, making it an 
all-purpose Printer that's a real pleasure to use.

BACKGROUND INFORMATION

There are two principal ways in which all colors are produced.
The first involves mixing light rays. In this system--commonly known as the
"RGB" method--Red, Green, and Blue light rays are projected on a surface 
(such as a theater screen or a color monitor) to generate all other colors.

The second method--and you'll probably remember this from your junior high
school art class--is based on the mixture of pigments such a ink or paint. In
this method, the colors Yellow, Magenta, and Cyan are mixed in different
combinations to produce all other colors. This is called the "subtractive"
system, although it is most often known as the "YMC" method.

The CGP-220 uses the "YMC" method. Color monitors, on the other hand, use
light rays to create color, and, therefore, use the "RGB" method.

It is possible, however, to print graphic displays from a color monitor
because the CGP-220 is equipped with built-in software that allows conversion
from the "RGB" method to the "YMC" method. This means, simply, that you can
use a Color Computer to produce a graphic color display and then "dump" the
picture to the CGP-220 for printing.

Of course, you can manipulate colors directly in the Bit Image or the
Color-Scan Mode from a BASIC program. Color Screen Dumping is just an extra
convenience that makes your CGP-220 more useful and a valuable addition to
any computer system.


(smm 0/04/93)