Test card for ink jet printers and method of using same

Details Test card for ink jet printers and method of using same Test card for ink jet printers and method of using same

2008-05-06

2008-05-06

Huffman, Julian D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

07367646

ABSTRACT:
A card for testing print heads includes a first layer having a first height and longitudinal length and a second layer located on top of the first layer having a second height and longitudinal length smaller than the first length. Also, a method of determining ink drop velocity including providing such a card, and printing a line including a plurality of dots thereon. A first of the dots is located on the first layer and a second of the dots is located on the second layer. Finally, the method includes determining a first relative distance between the first and second of the dots along the print direction, determining a second relative distance between the top surfaces of the first and second layers, and calculating the ink drop velocity as follows: V*(RD1/RD2), wherein V is the print velocity, D1is the first relative distance, and D2is the second relative distance.

REFERENCES:
patent: 6003980 (1999-12-01), Sheinman et al.
patent: 6350006 (2002-02-01), Muller et al.
patent: 6629747 (2003-10-01), King et al.
patent: 6644773 (2003-11-01), Bildstein et al.
patent: 6669324 (2003-12-01), King et al.

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