Method of apparatus for forming an object by means of additive manufacturing

Abstract

A method of and an apparatus (1,29) for forming an object by means of additive manufacturing, the method comprising consecutively providing a plurality of layers (9) of building material (5, 6), and selectively curing one or more pixels (47) of each of the layers (9) during printing thereof. The method comprises a step of providing a first layer (9) of a first building material (5) onto a support surface (4, 30) or a preceding layer (9), and selectively exposing, in accordance with layer data, one or more pixels (47) in the first layer (9) to a dose of radiation (45, 45′). It further comprises the identifying, based on the layer data, of one or more contour pixels (47) in the first layer (9) that coincide with a contour of a featured region of a subsequent second layer (9), wherein the featured region of the second layer (9) is to be provided using a second building material (6) different from the first building material (5). The method also comprises increasing, prior to said selectively exposing, a radiation dose (45′) for the identified contour pixels (47). The step of selectively exposing includes exposing the one or more contour pixels (47) using the increased radiation dose (45′).

Dependencies are inferred from the claim text.