Meniscus Film Ink Jet Printer
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
Ink droplets are produced from a relatively large orifice to avoid the problems of ink congealing or drying in a nozzle that could prevent droplet formation while still obtaining good character definition from the relatively large orifice. A round disc 1, which has holes 2 formed therein adjacent its circumference and equally angularly spaced from each other, rotates about its center through a tank 3 having ink therein to pick up ink on both of its surfaces. As shown in Fig. 3, a meniscus ink film 4 is formed in each of the holes 2 in the disc 1 as they pass through the tank 3 (Fig. 1). It should be understood that wipers (not shown) are supported by the tank 3 to remove all of the ink from both surfaces of the disc 1 other than the ink within each of the holes 2. An air jet 5 (Fig.