A method for digital printing in quantity, comprising the steps of: • providing a conveying unit adapted to convey printing substrates on which to print in quantity; • setting a running velocity for said conveying unit; • providing a digital printer, coupled to said conveying unit and equipped with a plurality of printing modules (Mod _ i) configured to print on said printing substrates with decorative inks (Idi) and/or material inks (Imi); characterized in that it further comprises the steps of: • providing a graphics file as input to said digital printer, said file representing a motif to be reproduced on at least one of said printing substrates at a predefined resolution (RIS_pred); • calculating a decoration frequency (fd) for printing with said decorative inks (Idi) as a function of said predefined resolution (RIS_pred) and of the set running velocity; • calculating single material printing frequencies (fmi) for each one of said material inks (Imi) as a function of predefined theoretical quantities (Qmi) of material (mi) to be deposited on said printing substrates; • calculating a synchronized printing frequency (fM) substantially obtained as a multiple value of said decoration frequency (fd) lower than a predefined synchronized printing value (fM_pred); • calculating a scaling factor (Dd, Dmi: i=1..n) obtained as the ratio between said synchronized printing frequency (fM) and one of the following: - said decoration frequency (fd) and - each one of said single material printing frequencies (fmi); • calculating an actual printing frequency (f'mi) as a function of said scaling factors (Dd, Dmi: i=1..n); • calculating an actual printing resolution (RIS_eff) as a combined function of said actual material printing frequency (f'mi) and of said running velocity of said conveying unit; • printing on said printing substrates at said calculated actual printing resolution (RIS_eff). • providing a conveying unit adapted to convey printing substrates on which to print in quantity; • setting a running velocity for said conveying unit; • providing a digital printer, coupled to said conveying unit and equipped with a plurality of printing modules (Mod _ i) configured to print on said printing substrates with decorative inks (Idi) and/or material inks (Imi); • providing a graphics file as input to said digital printer, said file representing a motif to be reproduced on at least one of said printing substrates at a predefined resolution (RIS_pred); • calculating a decoration frequency (fd) for printing with said decorative inks (Idi) as a function of said predefined resolution (RIS_pred) and of the set running velocity; • calculating single material printing frequencies (fmi) for each one of said material inks (Imi) as a function of predefined theoretical quantities (Qmi) of material (mi) to be deposited on said printing substrates; • calculating a synchronized printing frequency (fM) substantially obtained as a multiple value of said decoration frequency (fd) lower than a predefined synchronized printing value (fM_pred); • calculating a scaling factor (Dd, Dmi: i=1..n) obtained as the ratio between said synchronized printing frequency (fM) and one of the following: - said decoration frequency (fd) and - each one of said single material printing frequencies (fmi); - said decoration frequency (fd) and - each one of said single material printing frequencies (fmi); • calculating an actual printing frequency (f'mi) as a function of said scaling factors (Dd, Dmi: i=1..n); • calculating an actual printing resolution (RIS_eff) as a combined function of said actual material printing frequency (f'mi) and of said running velocity of said conveying unit; • printing on said printing substrates at said calculated actual printing resolution (RIS_eff).