The following printers were produced by Atari and styled to match the XL
series computers.

Atari 1020 Color Printer:
( = Commodore 1520 / Oric MCP40 / Tandy/Radio Shack CGP-115 /..; made by ALPS)
- 4-color graphics: (black, red, blue, green). optional 8-pen rainbow package
- alphanumeric and X,Y plotting capability
- 10 cps (40-column mode)
- 20, 40 and 80-column modes
- horizontal and vertical alphanumerics, English and International chr sets
- water soluble ink pen technology
- 4-pen barrel print head
- microprocessor
- paper: standard roll paper (40 column width)
- TX9032 Joystick Sketchpad graphics software cassette included

Atari 1025 Printer:   ( = Okidata ML80 )
- 40 cps (80-column 10 cpi mode)
- 5 cpi expanded (40 col), 10 cpi (80 col), 16.7 cpi condensed (132-col)
- 5x7 character dot matrix
- buffer: 132 chrs at 16.7 cpi, 80 chrs at 10 cpi
- paper: roll,fanfold,single sheets. optional:roll paper holder, tractor feed

Atari 1027 Letter Quality Printer:     ( = Mannesmann Tally Riteman LQ.)
- fully formed characters, prestige elite 12)
- 12 characters per inch (80 columns)
- 20 characters per second
- single sheets or roll paper

Atari 1029 Programmable Printer    (by Seikosha)
- 7-pin dot matrix, same as Commodore MPS-801
- Released for Europe & Canada (not USA)
- Rich_N_Feymus says:
     I think it's a SEIKOSHA GP500, but not 100% sure. However, the
     Commodore MPS-801 ribbons should be much easier to find.
- The Tandy DMP 110 is another model reported to be the same as the 1029.