Imaging device and imaging method thereof, and printer

A printer, comprising a toner cartridge and an imaging device:

• wherein the imagine device, comprising:
• M rotatable photosensitive drums, wherein each photosensitive drum of the M rotatable photosensitive drums is configured to form an electronic latent image in a light-receiving region of each photosensitive drum through exposing the light-receiving region;
• wherein M is greater than or equal to 1, and the light-receiving region comprises a plurality of light-receiving sub-regions arranged in an axial direction of each photosensitive drum;
• at least one display chip, wherein each of the at least one display chip comprises at least two light-emitting regions arranged in a first direction, light-emitting regions of the at least one display chip have a one-to-one correspondence with light-receiving sub-regions of the M rotatable photosensitive drums, and each light-emitting region is provided with a plurality of light-emitting units;
• at least one projection lens in one-to-one correspondence with the at least one display chip, wherein each of the at least one projection lens is configured to form an image for a corresponding display chip of the at least one display chip;
• and
• at least one beam deflection system in one-to-one correspondence with the at least one display chip, wherein each of the at least one beam deflection system is configured to deflect an image, which is formed by light from one light-emitting region in a display chip of the at least one display chip through a corresponding projection lens of the at least one projection lens, to a light-receiving sub-region corresponding to the one light-emitting region.