Ballistic aerosol marking apparatus with non-wetting coating

A structure for use in an apparatus for ejecting a material, comprising;

• a body having a first channel therein for receiving a propellant stream, said first channel having a marking material receiving region;
• a first marking material reservoir, the first marking material reservoir including a dielectric liquid;
• a first port communicatively connecting said reservoir and said first channel, said fist channel is defined by at least one channel wall, said at least one channel wall having a non-wetting material layer applied selectively thereover;
• and
• an exit orifice to output a marking material stream carried by the propellant stream, the marking material stream does not deviate by more than 20 percent from a width of the exit orifice for a distance of a t least four times the exit orifice width.

A structure for use in an apparatus for ejecting a material, comprising;

• a body having a first channel therein for receiving a propellant stream, said first channel having a marking material receiving region;
• a first marking material reservoir;
• a first port communicatively connecting said reservoir and said first channel, said first port including at least one separating structure, said at least one separating structure having a surface, said surface having a non-wetting material layer applied selectively thereover;
• and
• an exit orifice to output a marking material stream carried by the propellant stream, the marking material stream does not deviate by more than 20 percent from a width of the exit orifice for a distance of at least four times the exit orifice width.