These printers use the 6R287 cartridge:

Xerox-Tektronix 4010
Xerox-Tektronix 4011
Xerox-Tektronix 7040
Xerox-Tektronix 7041
Xerox-Tektronix 7041 EM
Xerox-Tektronix 7041 EM Fax
Xerox-Tektronix 7041 Fax
Xerox-Tektronix 7042
Xerox-Tektronix 7042 EM Fax
Xerox-Tektronix 7042 Fax
Xerox-Tektronix 7042 LaserFACSIMILE
Xerox-Tektronix Fax 7041
Xerox-Tektronix Fax 7041 EM
Abaton Laserscript
Abaton Laserscript II
Abaton Laserscript LX
Abaton Laserscript P-5
Acom-Computer MC 4806
Acom-Computer MC 4808
Adler-Royal SDR 7704
Adler-Royal SDR 7706
Adler-Royal SDR 7708
Alwright-Data Laser 6
ATT 493
ATT 593
ATT 6490-0401
ATT 6490-0801
C.Itoh CI 4
C.Itoh CI 4 D
C.Itoh CI 4 DGL
C.Itoh CI 4 GDI
C.Itoh CI 4 II
C.Itoh CI 4 Plus
C.Itoh CI 5
C.Itoh CI 6
C.Itoh CI 8
C.Itoh CI 8 E
C.Itoh CI 8 XA
C.Itoh CI 8 XTRA
C.Itoh CI 8 XTRA Plus
C.Itoh Laserbeam Printer
Check-Technology Check Expert 108
Compuprint Pagemaster 411
Compuprint Pagemaster 413
Compuprint Pagemaster 422
DTP-Systems Desktop Printer
ELT Labelmaster 5
ELT Labelmaster 6
ELT Labelmaster 8
Epson ActionLaser
Epson Actionlaser Plus
Epson EPL 6000
Everex EXO 2507 A
Everex EXO 2507 Z
Everex EXO 2508
Everex EXO 2510
Everex Laser Ptr
Everex Laserscript
Everex Laserscript Fax
Everex Laserscript Lx
Facit D 8083
Facit P 6060
Facit P 6080
Facit P 8040
Facit P 8045
Facit P 8083
Facit P 8085 A
Facit P 8085 S
Fontex-Tech Syslaser
Gestetner GLX 600
Harris 2006
Harris 3270
HASI P 808 A
HASI P 808 P
Honeywell Pagemaster 411
Honeywell Pagemaster 413
Honeywell Pagemaster 422
Hyundai Excelaser 8000 K
Hyundai HLP 6000
Hyundai HLP 8000
Hyundai Superwriter
ITT 9355
ITT Fax 3765
ITT Fax 3770
ITT Fax 3775
ITT Fax 3780
Kodak 7008
Kodak Ektaplus 7008
Lanier 2006
Lanier LanierFax 2006
Microtek MPT 306
Microtek Truelaser
Microtek Turboprint
Microtek Turboprint Ps
Murata-Muratec F 85
Nashuatec FT 140
NCR 6405
NCR 6435
NCR 6490-0401
NCR 6490-0801
Oasys Laserpro 90 /8
Oasys Laserpro Exec
Oasys Laserpro Exec 630
Olivetti OFX 3065
Olivetti PG 306
Olivetti PG 308
Olivetti PG 404
Olivetti PG 408
Olivetti TC 60
Olivetti TC 62
Olympia Laser PS-6
Olympia Laserscript Lx
Packard-Bell PB 9500
Philips Laserprinter
Philips NMS 1474
Philips NMS 1480
Philips NMS 1481
Philips NMS 1485
Philips P 3480
Radio-Shack LP 400
Radio-Shack LP 410
Radio-Shack LP 800
Sagem LZ 830
Sagem Safax Leader
Sagem Safax Master
Sagem Safax Premier
Schneider Laser S
Seikosha OP 104
Seikosha OP 108
Siemens Highprint 4819
Siemens Highprint 4820
Tally MT 904
Tally MT 904 Plus
Tally MT 904 Plus PS
Tally MT 904 PS
Tally MT 905
Tally MT 905 Plus
Tally MT 906
Tally MT 906 PS
Tally MT 906 WP
Tally MT 908
Tally MT 908 PS
Tally-Genicom 7040 EC
Tally-Genicom 7080 EC
Tally-Genicom 7080 RP
Tally-Genicom MT 904
Tally-Genicom MT 904 Plus
Tally-Genicom MT 904 Plus PS
Tally-Genicom MT 904 PS
Tally-Genicom MT 905
Tally-Genicom MT 905 Plus
Tally-Genicom MT 906
Tally-Genicom MT 906 PS
Tally-Genicom MT 906 WP
Tally-Genicom MT 908
Tally-Genicom MT 908 PS
TEC LB 1305
TEC LB 1305 B
TEC LB 1305 C
TEC LB 1306
TEC LB 1306 C
TEC LB 1321
TEC LB 1321 C
TEC LB 1321 CE
TEC LB 1321 E
TEC LB 1323
TEC LB 1323 CE
TEC LB 1323 D
TEC LB 1323 S
TEC LF 3600 Fax
Teligen Laser 4
Teligen Laser 8
Toshiba LS 6 TN7100
Toshiba PageLaser 6-6PPM
Toshiba PageLaser Gx-200
Toshiba TN 7100
Triumph-Adler SDR 7704
Triumph-Adler SDR 7706
Triumph-Adler SDR 7708