Control procedure for a laser marking matrix system

A method of controlling a laser marking matrix system, the matrix system comprising an N×M matrix of lasers to produce the laser marking, N being the vertical or raster dots, and M being the number of dots over the width of the matrix, N and M being at least two dots, the method comprising the sequential transformation of at least two images to be marked into a series of marking commands according to an N×M matrix of dots, wherein the method comprises the following phases:

• dividing a first image into a fixed portion of the image and a variable portion of the image,
• transforming the fixed portion of the image into a fixed matrix and the variable portion of the image into a variable matrix,
• combining said fixed and variable matrices, forming the complete N×M matrix of the dots to be marked,
• laser marking of the first matrix on the surface to be marked,
• processing of a second image, obtaining a new variable matrix which is added to the previous fixed matrix, producing a complete new N′×M′ matrix corresponding to a new image,
• laser marking of the second matrix on the surface to be marked.