Abstract: Material-handling systems are described that maximize the stability of materials, such as inks or clear overcoat materials. Some of the material handling systems oxygenate the material as it moves through the material-handling systems, reducing premature polymerization of the material and/or providing a stable viscosity.

Abstract: An ink supply system includes a first ink supply module configured to store a first ink, a second ink supply module configured to store a second ink, and an ink pathway configured to transfer predetermined volumes of the first and second inks from the first and second ink supply modules to a print head. The ink pathway is configured to mix and in some instances heat the predetermined volumes of the first and second inks as the inks are transferred to the print head to form a mixed ink.

Abstract: An offset electrostatic imaging process is disclosed which comprises the steps of (a) forming a latent electrostatic image on a dielectric imaging member, said dielectric imaging member being prepared by coating an electrically conductive substrate with a porous layer of a non-photoconductive metal oxide using a deposition process; (b) developing the latent electrostatic image with a developer material which comprises a silicone polymer and from about 0.

Abstract: An electrostatic print head system is disclosed which comprises an ion modulated electrostatic print head, means for supplying a flow of heated air having a temperature in the range of from about 120.degree. F. (49.degree. C.) to about 200.degree. F. (93.degree. C.), and means for directing the heated air at, near or through the print head to reduce chemical deposit accumulation at the print head. The print head may comprise a modulated aperture board having a plurality of selectively controlled apertures therein and an ion generator for providing ions for electrostatic projection through the apertures. The electrostatic print head system may be used for forming latent electrostatic images and employed in an electrostatic printer which further comprises a means for developing the latent electrostatic images.

Abstract: An offset electrostatic printer is disclosed which comprises (a) an ion modulated electrostatic print head for forming latent electrostatic images, (b) a dielectric imaging member comprising a layer of dielectric material, (c) means for developing a latent electrostatic image on the dielectric imaging member, (d) means for transferring a developed electrostatic image from the dielectric imaging member to an image receiving surface, (e) means for supplying a flow of heated air having a temperature in the range of from about 120.degree. F. (49.degree. C.) to about 200.degree. F. (93.degree. C.), and (f) means for directing the flow of heated air at, near or through the print head and at or near the dielectric imaging member. The flow of heated air reduces the accumulation of chemical deposits in the print head.

Abstract: An offset electrostatic printer is disclosed which comprises (a) an ion modulated electrostatic print head for forming latent electrostatic images, (b) a dielectric imaging member comprising a layer of dielectric material, (c) means for developing a latent electrostatic image on the dielectric imaging member, (d) means for transferring a developed electrostatic image from the dielectic imaging member to an image receiving surface, (e) means for supplying unheated dehumidified air having a relative humidity of less than about 20 percent at or near ambient temperature, and (f) means for directing the dehumidified air at, near or through the print head and at or near the dielectric imaging member.

Abstract: An electrostatic print head system is disclosed which comprises an ion modulated electrostatic print head, a means for supplying unheated dehumidified air having a relative humidity of less than about 20 percent at or near ambient temperature, and a means for directing the dehumidified air at, near or through the print head. The print head may comprise a modulated aperture board having a plurality of selectively controlled apertures therein and an ion generator for providing ions for electrostatic projection through the apertures. The electrostatic print head system may be used for forming latent electrostatic images and employed in an electrostatic printer which further comprises a means for developing the latent electrostatic images.