Printing apparatus and method having functions to compensate for light intensity difference

A printing method for a print apparatus including a photoconductive drum and a laser scanning unit (LSU) to scan a surface of the photoconductive drum with laser beams to form a latent image, comprising:

• receiving externally input image data;
• generating dot size information according to the received image data, wherein the dot size information determines sizes of individual dots forming an image to be printed;
• modifying the dot size information using dot size compensation values in proportion to a scanning distance of the laser beams from the surface of the photoconductive drum to the LSU;
• generating a pulse signal to control the scanning of the laser beams of the LSU using the modified dot size information;
• and
• outputting the laser beams on the photoconductive drum according to the pulse signal with the LSU.

An apparatus comprising:

• a photoconductive drum having a latent image comprising dots thereon;
• a scanning unit to scan the photoconductive drum to thereby form the image;
• a compensation unit to determine respective sizes of the dots based upon respective scanning distances between the photoconductive drum and the scanning;
• and
• a memory to store dot size compensation values in proportion to the scanning distances, wherein the compensation unit uses the dot size compensation values to determine the respective sizes of the dots.

A method comprising:

• receiving image information of an image comprising a plurality of dots;
• determining respective sizes of the dots;
• modifying the dot sizes proportional to a scanning distance between a scanning unit and a photosensitive medium;
• and
• scanning beams from the scanning unit to the photosensitive medium to form a latent image thereon comprised of dots having the modified dot sizes.