Abstract: A continuous jet module, apparatus, and method are described for printing with a high viscosity printing fluid having a viscosity of 10 to 100 centipoise. The module includes a housing having a printing fluid reservoir for feeding the high viscosity printing fluid to a plurality of channels. The reservoir has a first longitudinal direction and includes a plurality of openings in a second direction. Each channel is disposed in one of the corresponding openings, and each channel receives the high viscosity printing fluid from the reservoir through its corresponding opening and generates therefrom a continuous jet of high viscosity printing fluid.

Abstract: A continuous jet module for discharging a high viscosity printing fluid and apparatus which includes a plurality of the printing modules is provided. The module includes a housing having a printing fluid reservoir for storing and providing said high viscosity printing fluid and a plurality of channels. The reservoir has a first longitudinal direction and includes a plurality of openings in a second direction. Each channel is disposed in one of the corresponding openings and each channel receives the high viscosity printing fluid from the reservoir through its corresponding opening and generates therefrom a continuous jet of high viscosity printing fluid.

Abstract: A multi-jet generator device for creating droplets for use in a process for placing selected droplets of printing fluid onto a printing medium. The device includes a printing fluid distribution member for providing a supply of printing fluid, an array of jet generators deployed along the printing fluid distribution member and a drop generator rotatably deployed within the printing fluid distribution member for regulating the flow of the printing fluid from the printing fluid distribution member to the array of jet generators so as to control the breakage of jets of printing fluid into droplets. The resulting droplets can be charged and deflected so as to selectively impact a printing medium such as paper, glass or metal and complete the printing process.

Abstract: A system for treating a surface, such as the outside surfaces of a tall building which can be operated remotely without the need to place a worker in close proximity of the surface to be treated. The system includes a vertical supporting column onto which is mounted a treatment unit. The treatment unit can carry out washing, painting, sandblasting, and similar operations and includes mechanisms for allowing the working head of the unit to be angles with respect to, as well as to move parallel to and perpendicular to, the surface being treated. In another embodiment, a window cleaning unit is suspended from the roof and is allowed to descent while cleaning the exterior surfaces of the windows.