Abstract: An apparatus for exposure of a relief precursor includes a substrate layer and at least one photosensitive layer. The apparatus includes a first light source configured to illuminate a first side of the relief precursor, a movable second light source configured to illuminate a second side of the relief precursor opposite the first side, a movable shield located between the first light source and the second light source and configured to capture at least a portion of the light of the second light source transmitted through the relief precursor, and a moving means configured to move the movable shield simultaneously with the second light source.

Abstract: A method for imaging a mask layer includes reading imaging data for a sequence of at least (C1+C2) pixels, at a first moment, using a group of C1 first imaging beams for imaging substantially simultaneously a first group of C1 pixels of said sequence in accordance with the imaging data, at a second moment, using a group of C2 second imaging beams for imaging substantially simultaneously a second group of C2 pixels of said sequence in accordance with the imaging data, repeating the reading of imaging data, the using of a group of C1 first imaging beams for imaging at a first moment, and the using of a group of C2 second imaging beams for imaging at a second moment for a next sequence of at least (C1+C2) pixels.

Abstract: Apparatus for exposure of a relief precursor includes a substrate layer and at least one photosensitive layer. The apparatus includes a first light source configured to illuminate a first side of the relief precursor, a movable second light source configured to illuminate a second side of the relief precursor opposite the first side, a movable shield located between the first light source and the second light source and configured to capture at least a portion of the light of the second light source transmitted through the relief precursor, and a moving means configured to move the movable shield simultaneously with the second light source.

Abstract: An apparatus for exposure of a relief precursor (P) which comprises a substrate layer and at least one photosensitive layer. The apparatus includes a carrying structure for carrying a relief precursor and an LED array configured to illuminate a photosensitive layer of the relief precursor carried by the carrying structure. The LED array is configured to illuminate simultaneously a predetermined surface area of at least 900 cm2. The LED array includes a plurality of subsets of one or more LEDs, each subset being individually controllable. The apparatus also includes a control unit to control the plurality of subsets individually, and such that an irradiation intensity difference in the predetermined surface area is within a predetermined range.

Abstract: Apparatus for exposure of a relief precursor includes a substrate layer and at least one photosensitive layer. The apparatus includes a first light source configured to illuminate a first side of the relief precursor, a movable second light source configured to illuminate a second side of the relief precursor opposite the first side, a movable shield located between the first light source and the second light source and configured to capture at least a portion of the light of the second light source transmitted through the relief precursor, and a moving means configured to move the movable shield simultaneously with the second light source.

Abstract: An apparatus for exposure of a relief precursor (P) which comprises a substrate layer and at least one photosensitive layer. The apparatus includes a carrying structure for carrying a relief precursor and an LED array configured to illuminate a photosensitive layer of the relief precursor carried by the carrying structure. The LED array is configured to illuminate simultaneously a predetermined surface area of at least 900 cm2. The LED array includes a plurality of subsets of one or more LEDs, each subset being individually controllable. The apparatus also includes a control unit to control the plurality of subsets individually, and such that an irradiation intensity difference in the predetermined surface area is within a predetermined range.