Method for printing a colour pixel matrix on a physical medium by printing oblique lines and associated control device

摘要

A method designed to allow the printing of a matrix (MPC) of pixels, in N colours defining a colour coding system, on a selected part of a physical medium (MP). That method comprises a stage in which colour pixels are printed in at least one pass along oblique lines in relation to the physical medium (MP), wherein the pixels of an oblique line are all in the same colour selected from the N colours and different from that used for the previous oblique line, in order to generate a matrix (MPC) of M horizontal lines comprising P pixels each in the N colours successively in a selected order, and wherein each horizontal line other than the first one comprises a first pixel that is identical to the second pixel of the previous horizontal line.

主权项

1. A method for printing each pixel of a matrix of M*P pixels with a single colour amongst N colours, said N colours defining a colour coding system, on a selected part of a physical medium, said method further comprising laser personalization of said printed pixels in different shades of grey or black pixels or white pixels or transparent pixels in light-sensitive layers that are placed on top of said matrix of printed pixels, said method comprising a stage during which colours are printed in at least one pass along oblique lines of pixels in relation to said physical medium, wherein the pixels of an oblique line are all printed in the same colour selected from said N colours, different from that used for the previous oblique line, in order to generate a matrix of M horizontal lines comprising P pixels each in said N colours successively in a selected order, with the possible repetition of said order when P is greater than N, and wherein each horizontal line other than the first one comprises a first pixel that is identical to the second pixel of the previous horizontal line, whereby possible errors in the positioning of the pixels essentially occur along the oblique movement direction and not along the direction of the horizontal lines.