These printers use the TK-50 cartridge:

Kyocera-Mita FS 1900

Kyocera-Mita FS 1900 D

Kyocera-Mita FS 1900 DN

Kyocera-Mita FS 1900 DTN

Kyocera-Mita FS 1900 N

Kyocera-Mita FS 1900 T

Kyocera-Mita FS 1900 TN

Haris H 286

Kyocera FS 1900

Mita FS 1900

Mita FS 1900 D

Mita FS 1900 DN

Mita FS 1900 DTN

Mita FS 1900 N

Mita FS 1900 T

Mita FS 1900 TN

Postalia T 1000 POSTAGE METER