Photoplotting method and an arrangement for plotting a computer-stored raster image on a plane, photosensitive record carrier

An arrangement for plotting a computer-stored raster image on a plane, photosensitive record carrier comprising:

• a matrix-like arrangement of one of controllable light-emitting elements and controllable light-irradiated light modulation elements;
• an aperture matrix having divided aperture matrix fields, each aperture matrix field comprising an aperture for the passage of a light beam to plot a picture element on the record carrier;
• the record carrier comprising a matrix-like arrangement of raster image subareas, each raster image subarea comprising a matrix-like arrangement of picture element positions;
• a movement mechanism adapted to move the aperture matrix and the record carrier relative to each other;
• the computer-stored raster image being divided into a matrix-like arrangement of computer raster image subareas, each computer raster image subarea comprising a matrix-like arrangement of raster point positions, each raster point position having a binary storage status;
• the computer raster image subareas and the raster image subareas are associated with each other;
• the raster point positions of the computer raster image subareas and the picture element positions of the raster image subareas of the record carrier are associated with each other;
• a number of the one of the controllable light-emitting elements and the controllable light-irradiated elements is the same as a number of apertures of the aperture matrix and the same as a number of raster image subareas of the record carrier;
• the movement mechanism adjustably aligns the apertures of the aperture matrix field with the picture element positions of the raster image subareas of the record carrier;
• a control device that controls the one of the controllable light-emitting elements and the light-irradiated elements in accordance with the storage status of the raster point position associated with said movement position, so that, for each movement of the movement mechanism, the aperture mask fields associated with the one of the controllable light-emitting elements and the light-irradiated elements either can or cannot be irradiated with light;
• the picture elements of a respective raster image subarea of the record carrier being successively plotted;
• and
• the picture elements associated with same picture element positions of the raster image subareas of the record carrier being simultaneously plotted.

An arrangement for plotting a computer-stored raster image on a plane, photosensitive record carrier comprising:

• a matrix-like arrangement of one of controllable light-emitting elements and controllable light-irradiated light modulation elements, wherein the matrix-like arrangement of light-irradiated elements is composed of a tilting mirror chip;
• an aperture matrix having divided aperture matrix fields, each aperture matrix field comprising an aperture for the passage of a light beam to plot a pictutre element on the record carrier;
• the record carrier comprising a matrix-like arrangement of raster image subareas, each raster image subarea comprising a matrix-like arrangement of picture element positions;
• a movement mechanism adapted to move the aperture matrix and the record carrier relative to each other;
• the computer-stored raster image being divided into a matrix-like arrangement of computer raster image subareas, each computer raster image subarea comprising a matrix-like arrangement of raster point positions, each raster point position having a binary storage status;
• the computer raster image subareas and the raster image subareas are associated with each other;
• the raster point positions of the computer raster image subareas and the picture element positions of the raster image subareas of the record carrier are associated with each other;
• a number of the one of the controllable light-emitting elements and the controllable light-irradiated elements is the same as a number of apertures of the aperture matrix and the same as a number of raster image subareas of the record carrier;
• the movement mechanism adjustably aligns the apertures of the aperture matrix field with the picture element positions of the raster image subareas of the record carrier;
• a control device, comprising a computer program, that controls the one of the controllable light-emitting elements and the light-irradiated elements in accordance with the storage status of the raster point position associated with said movement position, so that, for each movement of the movement mechanism, the aperture mask fields associated with the one of the controllable light-emitting elements and the light-irradiated elements either can or cannot be irradiated with light;
• the picture elements of a respective raster image subarea of the record carrier being successively plotted;
• the picture elements associated with same picture element positions of the raster image subareas of the record carrier being simultaneously plotted;
• and
• a condenser lens that generates converging light being located on a side of the aperture matrix turned away from the carrier records,
• wherein the image-scale determining lens is smaller than the aperture matrix.