Which of our systems support Unix

I got this information from Ricoh's Website.
And to answer your question, Yes we can print in this enviroment. But, only certain equipment. The list of support equipment in listed below.

Printing Solutions for UNIX Platform
This solution enables you to print with copiers and printers in Unix platform.
Supported UNIX Platforms

Unix Platforms Note
Sun Solaris 2.6, 7, 8, 9, 10 -Not all models support 10
HP-UX 10.x, 11.x, 11i v1, 11i -Not all models support HP-UX11i
Red Hat Linux 6.x, 7.x, 8.x, 9.x, Enterprise -Device option feature is not supported in 6.x.
-Not all models support Redhat Linux 9.x, Enterprise
SCO Open Server 5.0.6, 5.0.7 -Not all models support 5.0.7
IBM AIX V4.3, 5L Ver. 5.1/5.2, V5.3 -Not all models support 5L V5.2 and V5.3

Note: Device option feature enables use of optional equipment such as finisher and paper trays.

System Requirements
TCP/IP Network
Supported UNIX platform
Internal NIB (Network Interface Board)
Supported File Format
PS
PCL (Device Option feature is not supported)
ASCII Text
Note: Some models support PS (file format) only. Please refer to the following table for descriptions in Supported Products.

Supported Products

Black and White Digital Copier
Aficio 120/1013/1013F
Aficio 1515 *3
Aficio 150/180 *1
Aficio 1015/1018/1018D
Aficio 2015/2018/2018D *2
Aficio 220/270 *1
Aficio 1022/1027
Aficio 2022/2027 *2
Aficio 340/350/355/450/455 *1
Aficio 350e/355e/450e/455e *1
Aficio 1035/1035G/1045/1045G
Aficio 2035/2035G/2045/2045G
Aficio 2035e/2035eG/2045e/2045eG *2
Aficio 550/650 *1
Aficio 551/700 Type700 *1
Aficio 551/700 EB-70 *1
Aficio 1055
Aficio 1060/1075
Aficio 2051/2060/2075 *4
Aficio 850/1050 Type850
Aficio 850/1050 EB-105(e)
Aficio 1085/1105 Type850
Aficio 1085/1105 EB-105(e)
Aficio 2090/2105 Type2105 *3
Aficio 2090/2105 EB-105EX *3

Color Digital Copier
Aficio Color 3006 RC-200 *1
Aficio Color 3006 E-300 *1
Aficio Color 3506 RC-210 *1
Aficio Color 3506 E-310 *1
Aficio 1224C/1224CG
Aficio Color 4006/4106 RC-200 *1
Aficio Color 4006/4106 E-300 *1
Aficio Color 4506 RC-210 *1
Aficio Color 4506 E-310 *1
Aficio 1232C/1232CG
Aficio 2232C *2
Aficio 2238C *2
Aficio Color 6010/6110 E-650 *1
Aficio Color 6513 E-710 *1
Aficio Color 6513 E-810 *1
Aficio Color 6513 E-820 *1

Black and White Laser Printer
AP1400 *1
AP1600
AP2000 *1
AP2100 *1
AP2600/AP2600N *1
AP2610/AP2610N
AP400/AP400N *2
AP2700 *1
AP3200
AP600N *2
AP4500 *1
AP4510

Color Laser Printer
AP204 *1
AP305 *1
AP505 *1
CL2000 *3
CL2000N *3
CL3000
CL3000e *3
AP306/AP306D *1
CL4000DN *4
AP206 *1
CL1000N *3
CL5000
AP3800C
AP3850C
CL7000
CL7100 *2
*1 Note: These models support PS (file format) only. PostScript is required for printing.
*2 Note: These models support Red Hat Linux 9.x and IBM AIX 5L V5.2. All other models support up to Red Hat Linux 8.x. and IBM AIX 5L V5.1.
*3 Note: These models support RedHat 9.x, Enterprise, IBM AIX 5L V5.2, and HP-UX11i. RedHat Enterprise user must disable CUPS and install LPR.
*4 Note: These models support Sun Solaris 10, IBM AIX 5L V5.3 and SCO OpenServer 5.0.7.

Thanx