Patent ID: 8399167

Claim:
A toner composition adapted to be used in forming a masking pattern in a method of building up a three-dimensional body from a large number of mutually connected layers of powder particles that are bonded to each other using radiant heat, wherein the toner composition consists of powder particles and at least a majority of the powder particles are made of a polymer material, a non-abrasive ceramic material selected from glass and talcum powder and/or a non-abrasive metal material, all of the powder particles having a Mohs-hardness of 8 or less, the entire toner composition is able to withstand a temperature of at least 200° C. without the powder particles sticking together, and the toner composition has the property that it absorbs and reflects incident electromagnetic radiation that impinges essentially perpendicularly onto the masking pattern wherein a toner layer having a thickness that corresponds to three particle mono-layers of powder particles has a radiation transmission of not more than 30%.