Abstract: The present invention describes a torch for producing a plasma for a spectrochemical analysis comprising: an alumina ceramic injector, a vitreous material inner tube concentric with the injector, and an annular joint between the injector and the inner tube. The joint fixedly attaches the injector and the inner tube together and comprises of an adhesive compatible with vitreous material and alumina ceramic. A method of manufacturing the torch is also described.

Abstract: The present invention describes a torch for producing a plasma for a spectrochemical analysis comprising: an alumina ceramic injector, a vitreous material inner tube concentric with the injector, and an annular joint between the injector and the inner tube. The joint fixedly attaches the injector and the inner tube together and comprises of an adhesive compatible with vitreous material and alumina ceramic. A method of manufacturing the torch is also described.

Abstract: This invention provides an electrostatic printing apparatus comprising a rotatable electrostatically chargeable drum and ion deposition means for forming an electrostatic image on the electrostatically chargeable drum, the improvement comprising means for discharging a flow of air along the path of flow extending between the periphery of the electrostatically chargeable drum and the ion discharge means.

Abstract: Apparatus is provided for printing on a receptor such as paper. An electrostatic image is formed on a dielectric-coated drum in a controlled environment to minimize the creation of chemical contaminants. The image is then toned by wiping toner over the image from a toner delivery system which includes a mouth shaped to cause a vortex in the toner to improve toner flow. After toning the image is transferred to the receptor under pressure from a roller which is skewed with reference to the drum. The pressure in the nip is sufficient to also cause the toner to be fused to the receptor. An image eraser is also provided in the controlled environment.