DEVICE FOR SEDIMENTATION OF DROPS Russian patent published in 2008 - IPC B41J2/175 

FIELD: mechanics.

SUBSTANCE: device for sedimentation of drops comprises an inlet collector, outlet collector and fluid medium camera connected to at least one aperture for sedimentation of drops. Fluid medium camera is separated from at least one said collector by a porous element; during operation of the device there is a fluid medium flow between the inlet collector and outlet collector through the said camera; at that the pressure drop at the porous element is the predominant pressure drop in the said flow. Device for sedimentation of drops contains matrix of ejecting cameras, spaced from one another in the direction of the matrix, each of cameras is connected to an aperture for drops ejecting, device also contains at least one pressure camera, extending in the direction of the matrix and connected to each of ejecting cameras, and the inlet collector, extending in the direction of the matrix and connected with the pressure camera by means of the element, providing a resistance to fluid medium. During operation there appears the fluid medium flow out of the inlet collector through the pressure camera into ejecting cameras whereupon in the inlet collector there is present an actually unimpeded flow in the direction of the matrix, while in the pressure camera an actually unimpeded flow in the direction of the matrix is absent. A method of the fluid medium supply into the aperture of device for sedimentation of drops assumes a line of apertures and a collector of ink supply, extending parallel to the said line of apertures, it also includes the stages for feeding ink into the said collector; ink actually is flowing parallel to the apertures line, at that the volume of ink exceeds the one, which can be ejected from the apertures, causing leakage of ink at least through one limiting element into the pressure camera; at that the fluid medium flow inside the pressure camera is actually orthogonal to the line of apertures. Printing device consists of print head, scanned during operation, at that the print head consists of matrix of ejecting cameras, distanced from each other in the direction of the matrix, each of cameras is connected to the aperture for ink, the inlet pressure camera, connected to each of ejecting cameras, the inlet collector, extended in the direction of the matrix and connected to the inlet pressure camera by means of the same or some other porous material. During operation the fluid medium flows through each of ejecting cameras, at that an unimpeded flow in the inlet and outlet collectors runs in the direction of the matrix, while an unimpeded flow is absent in the inlet and outlet pressure cameras. The smaller, more compact collectors and collectors for scanning or movable carriage are designed.

EFFECT: scanning heads can be installed closely to each other; the effect of base movement shift can be reduced.

29 cl, 1 dwg