The lathem E Series ribbon cartridge is a Replacement cartridge for a variety of lathem time clocks/document stamps. Use with latham models: 900e, 1000e, 1500e, 5000Ep, 7000e and 7500e. This ribbon cartridge features a durable, plastic frame and is easy to load. Black. Since 1919, lathem's singular focus has been to manufacture innovative, durable and affordable employee time and attendance systems.