The Ricoh JP-12 B4 Master Roll (often designated as JP-12M B4) is a specialized thermal stencil roll used in digital duplicators (copyprinters) to produce high-volume prints rapidly and economically.
Compatible Machines
This specific B4-sized master roll is engineered for a seamless fit and operation in the following digital duplicator models:
Ricoh Priport: JP1250, JP1255, and DX3243
Gestetner: CP5308, CP5308B, and CPMT17