What is Raster data as it relates to printing?
Images are represented digitally as two-dimensional grids of colored dots or pixels. Each pixel is represented by some combination of color values. The representational pixel format accepted by the SDK code is RGB, meaning one byte (a value from 0 to 255) for the red component, followed by one byte (again, a value from 0 to 255) for the green component, and one byte for the blue component thus 3 bytes represent a pixel in RGB format. Example: a shade of blue could be written as (00,00,11). A raster is a single row of pixels. If there are N pixels in a row, then one unit of raster data is 3 *N bytes, starting with 3 bytes for the leftmost pixel, 3 for the next pixel, and so on.
