Patent ID: 7302212

Claim:
An apparatus for developing an electrostatic latent image employed in a printing machine including: a photoreceptor configured to receive a latent image and attract toner particles to the latent image; a developer unit positioned proximate to the photoreceptor, the developer unit including a developer housing for holding a supply of developer material that includes toner particles; a replenisher supply source having an internal volume that contains toner particles, the replenisher supply source having an opening; a replenisher transporter having one end located at the opening of the replenisher supply source to receive toner particles from the replenisher source supply and another end in communication with the developer housing for transporting toner particles from the replenisher supply source to the developer housing; and a filter at the end of the replenisher transporter that is located at the replenisher supply source opening, the filter being configured to limit the particles discharged from the replenisher supply source opening into the replenisher transporter to a maximum size.