specifically here in the interests of facilitating comprehension when r light emitting elements 5 a g light emitting elements 5 b and b light emitting elements 5 c emit light all of the respective microshutters of r light pixel shutters 9 a g light pixel shutters 9 b and b light pixel shutters 9 c of liquid crystal shutter 9 are open in actuality the microshutters are opened selectively in accordance with the image to be exposed as shown in fig5 b in accordance with light emission by the light source exposure of the first column and the second column is carried out with r light lr in a manner such that the exposed points in the first column are displaced with respect to the exposed points in the second column by half a pitch in the column direction and exposure of the third column and the fourth column is carried out with g light lg in a manner such that the exposed points in the third column are displaced with respect to the exposed points in the fourth column by half a pitch in the column direction and further exposure of the fifth column and the sixth column is carried out with b light lb in a manner such that the exposed points in the fifth column are displaced with respect to the.