Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

Wijnand Christiaan Germs

Herman Hendrikus Maalderink

Fabien Bernard Jacques Bruning

A method of and an apparatus () for forming an object by means of additive manufacturing, the method comprising consecutively providing a plurality of layers () of building material (), and selectively curing one or more pixels () of each of the layers () during printing thereof. The method comprises a step of providing a first layer () of a first building material () onto a support surface () or a preceding layer (), and selectively exposing, in accordance with layer data, one or more pixels () in the first layer () to a dose of radiation ('). It further comprises the identifying, based on the layer data, of one or more contour pixels () in the first layer () that coincide with a contour of a featured region of a subsequent second layer (), wherein the featured region of the second layer () is to be provided using a second building material () different from the first building material (). The method also comprises increasing, prior to said selectively exposing, a radiation dose (&#x2032;) for the identified contour pixels (). The step of selectively exposing includes exposing the one or more contour pixels () using the increased radiation dose (&#x2032;).

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Gorinchem, Netherlands

Wijnand Christiaan Germs