Printing system that utilizes print masks with resolutions that are non-integral multiples of each other

A method of operating a printing system having a printing-medium advance direction and a transverse direction that is perpendicular to the printing-medium advance direction, and a first plurality of ink drop generators and a second plurality of ink drop generators, comprising:

• moving the first plurality of ink drop generators along the transverse direction while ejecting first ink drops onto the printing medium in a dot grid pattern having a first resolution in the transverse direction;
• and
• moving the second plurality of ink drop generators along the transverse direction while ejecting second ink droplets onto the printing medium in a second dot grid pattern having a second resolution in the transverse direction, said first resolution and said second resolution being non-integer multiples of each other;
• and wherein:
• the first ink droplets create a drop size in the range of 50 to 60 microns on the first dot grid pattern.

A method of operating a printing system having a printing-medium advance direction and a transverse direction that is perpendicular to the printing-medium advance direction, and a first plurality of ink drop generators and a second plurality of ink drop generators, comprising:

• moving the first plurality of ink drop generators along the transverse direction while ejecting first ink drops onto the printing medium in a dot grid pattern having a first resolution in the transverse direction;
• and
• moving the second plurality of ink drop generators along the transverse direction while ejecting second ink droplets onto the printing medium in a second dot grid pattern having a second resolution in the transverse direction, said first resolution and said second resolution being non-integer multiples of each other;
• and wherein:
• the second ink droplets create a dot size in the range of 30 to 50 microns on the second dot grid pattern.

A method of operating a printing system having a printing-medium advance direction and a transverse direction that is perpendicular to the printing-medium advance direction, and a first plurality of ink drop generators and a second plurality of ink drop generators, comprising:

• moving the first plurality of ink drop generators along the transverse direction while ejecting first ink drops onto the printing medium in a dot grid pattern having a first resolution in the transverse direction;
• and
• moving the second plurality of ink drop generators along the transverse direction while ejecting second ink droplets onto the printing medium in a second dot grid pattern having a second resolution in the transverse direction, said first resolution and said second resolution being non-integer multiples of each other;
• and wherein:
• the first ink droplets are black and the second ink droplets are color;
• and
• the first ink droplets have a drop volume in the range of 12 to 25 picoliters.

A method of operating a printing system having a printing-medium advance direction and a transverse direction that is perpendicular to the printing-medium advance direction, and a first plurality of ink drop generators and a second plurality of ink drop generators, comprising:

• moving the first plurality of ink drop generators along the transverse direction while ejecting first ink drops onto the printing medium in a dot grid pattern having a first resolution in the transverse direction;
• and
• moving the second plurality of ink drop generators along the transverse direction while ejecting second ink droplets onto the printing medium in a second dot grid pattern having a second resolution in the transverse direction, said first resolution and said second resolution being non-integer multiples of each other;
• and wherein:
• the first ink droplets are black and the second ink droplets are color;
• and
• the second ink droplets have a drop volume in the range of 2 to 10 picoliters.

A method of operating a printing system having a printing-medium advance direction and a transverse direction that is perpendicular to the printing-medium advance direction, and a first plurality of ink drop generators and a second plurality of ink drop generators, comprising:

• moving the first plurality of ink drop generators along the transverse direction while ejecting first ink drops onto the printing medium in a dot grid pattern having a first resolution in the transverse direction;
• and
• moving the second plurality of ink drop generators along the transverse direction while ejecting second ink droplets onto the printing medium in a second dot grid pattern having a second resolution in the transverse direction, said first resolution and said second resolution being non-integer multiples of each other;
• and wherein:
• the first ink droplets are black and the second ink droplets are color;
• and
• the first ink droplets have a drop volume in the range of 16 to 20 picoliters.

A method of operating a printing system having a printing-medium advance direction and a transverse direction that is perpendicular to the printing-medium advance direction, and a first plurality of ink drop generators and a second plurality of ink drop generators, comprising:

• moving the first plurality of ink drop generators along the transverse direction while ejecting first ink drops onto the printing medium in a dot grid pattern having a first resolution in the transverse direction;
• and
• moving the second plurality of ink drop generators along the transverse direction while ejecting second ink droplets onto the printing medium in a second dot grid pattern having a second resolution in the transverse direction, said first resolution and said second resolution being non-integer multiples of each other;
• and wherein:
• the first ink droplets are black and the second ink droplets are color;
• and
• the first ink droplets have a drop volume in the range of 3 to 5 picoliters.

A method of operating a printing system having a printing-medium advance direction and a transverse direction that is perpendicular to the printing-medium advance direction, and a first plurality of ink drop generators and a second plurality of ink drop generators, comprising:

• moving the first plurality of ink drop generators along the transverse direction while ejecting first ink drops onto the printing medium in a dot grid pattern having a first resolution in the transverse direction;
• and
• moving the second plurality of ink drop generators along the transverse direction while ejecting second ink droplets onto the printing medium in a second dot grid pattern having a second resolution in the transverse direction;
• said first resolution and said second resolution, both in the transverse direction, being non-integer multiples of each other;
• and
• said dot grid patterns of the first and second plurality of ink drop generators having equal resolution in the printing-medium advance direction.