US 11,669,700 B2 · Method for optimizing a printing speed of a CIJ printer, in particular for printing 2D or graphical codes

Abstract

A printed graphical code has H lines and a W columns i (i=1, . . . W) and a pattern of H×W cells, each at the intersection of a column and a line. Each cell or dot is formed with a drop from a printhead of a continuous inkjet printer and two successive dots of a column are separated by at least one non printed cell. A method for printing each column comprises: retrieving or selecting charges to be applied to each drop for printing the dots of the column from a set of data or database of charges for each of a number of configurations of drops to be printed, the number being equal to or less than 2(H/2)+1 if H is an even number or equal to or less than 2((H+1)/2)+1 if H is an odd number; charging the drops for printing according to the retrieved charges; and printing the column.

Claims18

Dependent claims

A method for printing a graphical code on a surface, said graphical code having H lines and W columns i (i=1, . . . W), and comprising a pattern of H×W cells, each cell being at the intersection of a column and of a line, each printed cell or dot being formed with help of at least one drop generated by a printhead of a continuous inkjet printer, two successive dots of a same column being separated by at least one non printed cell, said method comprising, for printing each column:

retrieving or selecting, from at least one set of data or database (DB) of charges of the drops for each of a number of configurations of printed drops in the column, the charges to be applied to each of the drops for printing the dots of said column, said number of configurations being equal to or less than 2(H/2)+1 if H is an even number or equal to or less than 2((H+1)/2)+1 if H is an odd number;
generating N1 drops and charging part of said drops for printing the dots of said column according to said charges retrieved or selected from said at least one set of data or database (DB) and printing said column.

Continuous inkjet printer for printing a graphical code of height H and width W (on a print surface surface), said graphical code having H lines and a W columns i (i=1, . . . W), and comprising a pattern of H×W cells, each cell being at the intersection of a column and of a line, said printer comprising:

a drop generator configured to form a plurality of ink drops;
at least one memory configured to memorize at least one set of data or database (DB) of charges of the drops for each of a number of configurations of drops to be printed in a column, said number of configurations being equal to or less than 2(H/2)+1 if H is an even number or equal to or less than 2((H+1)/2)+1 if H is an odd number;
a controller configured to retrieve or select, for each column, the charges to be applied to each of the drops for printing said column from said at least one set of data or database (DB);
at least one electrode configured to charge the drops for printing said column according to said charges;
and
at least one electrode configured to deviate charged drops.

3 more elements

Dependencies are inferred from the claim text.

Method for optimizing a printing speed of a CIJ printer, in particular for printing 2D or graphical codes

Life of this patent

Method for optimizing a printing speed of a CIJ printer, in particular for printing 2D or graphical codes

Life of this patent

Abstract

Claims18