Image exposure device, image exposure method, and program

An image exposure method in an image exposure device, the method comprising:

• providing the image exposure device which includes:
• an image display device that has a plurality of pixels and irradiates a photosensitive recording medium with light from the plurality of pixels,
• a support member that supports the photosensitive recording medium in a state in which an exposure surface of the photosensitive recording medium faces the image display device,
• a limiting member that is provided between the image display device and the support member and limits an angle of the light emitted from the image display device to the photosensitive recording medium, and
• a processor;
• and
• controlling, by the processor, the image display device to display a display image generated by emphasizing a dark portion among density differences of high-frequency components of an input image,
• wherein in a case where a resolution (unit:
• ppi) of the image display device is D, the processor is configured to set a range for emphasizing the dark portion to a range according to a value M (unit:
• the number of pixels) obtained by a relational expression M=30/(2.54×1000/D).

A non-transitory computer-readable storage medium storing a program for causing a computer having a processor to execute a process of an image exposure in an image exposure device which includes:

• an image display device that has a plurality of pixels and irradiates a photosensitive recording medium with light from the plurality of pixels;
• a support member that supports the photosensitive recording medium in a state in which an exposure surface of the photosensitive recording medium faces the image display device;
• a limiting member that is provided between the image display device and the support member and limits an angle of the light emitted from the image display device to the photosensitive recording medium;
• and
• the processor, and the process includes:
• controlling, by the processor, the image display device to display a display image generated by emphasizing a dark portion among density differences of high-frequency components of an input image,
• wherein in a case where a resolution (unit:
• ppi) of the image display device is D, the processor is configured to set a range for emphasizing the dark portion to a range according to a value M (unit:
• the number of pixels) obtained by a relational expression M=30/(2.54×1000/D).