Abstract: A printing station includes a printing screen and an endless gas-permeable carrier band of screen material is provided which has a workpiece supporting run extending beneath the printing screen and on which a sheet-material workpiece to be printed is transported. A suction device is arranged below the supporting run for drawing printing ink into the workpiece on the same.

Abstract: A plurality of sleeves extends through a printing-medium chamber; each sleeve has one or more openings through which its interior can communicate with the chamber. In each sleeve a plunger is reciprocable between a retracted position in which the opening is exposed so that printing medium can enter from the chamber, and a printing position in which the plunger closes the opening and the printing medium in the sleeve is applied to a workpiece. A drive reciprocates the plungers individually. The chamber may be pressurized to cause more rapid entry of printing medium into the sleeves. The quantity of printing medium applied during each plunger reciprocation may be selectively varied.

Abstract: A screen printing machine wherein a hollow cylindrical stencil rotates about a stationary but adjustable horizontal header which supplies a liquid and is welded to a carrier for a reciprocable or pivotable holder supporting a blade-like or rod-like squeegee. The latter is biased against the internal surface of the stencil by a deformable tubular cushion which is received in a U-shaped portion of the carrier and is deformed by an elongated extension of the holder which imparts to the cushion a kidney-shaped cross-sectional outline. The cushion can be bonded to the carrier and comprises an elastic hose which is reinforced by one or more textile or metallic layers or a non-elastic hose which is reinforced by one or more layers of elastomeric material.

Abstract: Vertically reciprocatory printing elements each have an interior space for printing medium. Each element is first charged with printing medium during its reciprocation and the printing medium is then forcibly expelled from the printing element as the same reaches its printing position.

Abstract: Printing medium is supplied to a plurality of individual dot-printing elements, and these elements are used for printing a pattern on a web by applying dots of printing medium from respective ones of the elements to the web, either to the surface thereof or into the depth of the same.

Abstract: Printing medium is supplied to a plurality of individual dot-printing elements, and these elements are used for printing a pattern on a web by applying dots of printing medium from respective ones of the elements to the web, either to the surface thereof or into the depth of the same.

Abstract: A screen printing machine according to the invention has one or more printing stations each provided with a printing screen having a surface adapted to support a printing medium which is to be forced through the printing screen onto a travelling web. A rotary squeegee is provided for forcing the printing medium through the printing screen. The squeegee has a non-rotatable shaft which is mounted so as to be upwardly spaced from and extending substantially parallel to the surface of the printing screen, and a driven tubular jacket which rotatably surrounds the shaft and which is driven in rotation. An arrangement is provided for shifting the squeegee relative to the printing screen surface and into pressure-exerting line contact with the same.

Abstract: An endless printing screen of generally annular configuration is supported in end bearings. A tubular carrier extends through the space surrounded by the screen and defines with the screen an annular clearance which is subdivided into two or more axially successive chambers. An arrangement of tubes admits printing medium through the carrier into the chambers so that it can pass through the screen to print onto a web beneath the screen. Devices are provided for reciprocating the endless screen and the carrier.

Abstract: A screen printing machine has one or more printing stations. Each station has an endless printing screen of generally annular configuration and is supported in end bearings. A carrier extends through the space surrounded by the screen and defines a clearance with the screen. An arrangement of tubes admits printing medium through the carrier into this clearance. The clearance is subdivided into discrete chambers so that, when different-color printing media are admitted into the different chambers the printing station is capable of printing a multi-color pattern.

Abstract: A control device for controlling the level of a liquid in a container, a tank, a printing machine, or the like, which includes an elongated member in form of a tube or a cable, having a free end adjacent the desired maximum liquid level in the container and being adapted to feed a control medium, i.e., a gas, electric current, or light therethrough, which acts on a signalling device, or control means of a pump for feeding liquid in the container and which are actuated when the liquid reaches the free end of the elongated member. The elongated member being adjustably mounted for adjusting the position of the free end thereof in vertical direction.

Abstract: A screen printing machine includes a pair of transversely spaced first rollers mounted for rotation about axes located in a common substantially horizontal plane, and a second roller which is mounted for rotation about a second axis substantially paralleling the first axes and being located in a higher second plane. An endless printing screen is placed about the rollers to be entrained by the same; in the space between the first rollers it defines a printing run. First adjusting arrangements are provided by means of which the second roller can be raised and lowered with reference to the first rollers, and second adjustments are provided by means of which the second roller can be displaced in its horizontal plane transversely of its axis of rotation.

Abstract: A textile web is advanced in a path, and one or more printing stations print onto it. Downstream of the printing station or stations is provided a suction arrangement which contacts the advancing textile web from below, extending across the entire width of the web and exerting suction through the latter.

Abstract: A screen printing machine has an endless stencil which is trained about a plurality of supporting rollers. A squeegee roller defines with a portion of the inwardly directed stencil surface a trough into which printing medium can be fed to form a medium pool therein. Confining elements extend across the trough at locations spaced lengthwise of the same and have surface portions which sealingly and slidably engage the squeegee roller and the inwardly directed stencil surface, respectively, to prevent undesired escape of printing medium from the pool.

Abstract: An endless printing screen of generally annular configuration is supported in end bearings. An arrangement of tubes admits printing medium into the interior of the screen so that it can pass through the latter to print onto a web beneath the screen. A device is provided for reciprocating the endless screen.

Abstract: A screen printing machine wherein a hollow cylindrical stencil rotates about a stationary but adjustable horizontal header which supplies a liquid and is welded to a carrier for a reciprocable or pivotable holder supporting a blade-like or rod-like squeegee. The latter is biased against the internal surface of the stencil by a deformable tubular cushion which is received in a U-shaped portion of the carrier and is deformed by an elongated extension of the holder which imparts to the cushion a kidney-shaped cross-sectional outline. The cushion can be bonded to the carrier and comprises an elastic hose which is reinforced by one or more textile or metallic layers or a non-elastic hose which is reinforced by one or more layers of elastomeric material.

Abstract: An endless printing screen is trained about two or more guide rollers for traveling an endless path. Abutment members in form of longitudinally continuous or discontinuous elements are mounted on the respective lateral edge portions of the screen, extending from one of the screen surfaces. Tensioning units are mounted adjacent these edge portions and are provided with grooves through which the abutment members travel. Each tensioning unit at one of the lateral edge portions is connected with a tension unit at the opposite lateral edge portion by an arrangement which makes it possible to move the tensioning units apart from one another in direction transversely of the travel of the printing screen, thereby tensioning the printing screen. The thus-connected tensioning units can also be moved in toto in direction transversely of the travel of the printing screen.

Abstract: An enclosed receptacle has a plurality of outlet nozzles, and is subdivided into two compartments one of which communicates with the outlet nozzles and which are separated by a flexible diaphragm. A cushion of compressed gas is maintained in the other compartment, and an arrangement is provided for admitting printing ink into the compartment communicating with the outlet nozzles.

Abstract: A screen printing machine wherein a cylindrical stencil is rotatable about a horizontal axis and the liquid-supplying header in the stencil supports a carrier for a horizontal pintle pivotably mounting an elongated holder for a blade-like or rod-like squeegee. A gas-filled deformable cushion between the carrier and the holder biases the squeegee against the internal surface of the stencil opposite the locus where the external surface of the stencil contacts the material to be printed. Several helical springs which are attached to the holder and to the header bias the holder upwardly with a force which compensates for the combined weight of the squeegee and holder so that the force with which the squeegee bears against the internal surface of the stencil depends exclusively on the regulatable pressure of gaseous fluid in the cushion.

Abstract: A web is guided onto a movable support, such as a printing blanket, and the web and the support are advanced together in a common direction, but at differential speeds so that the web will be subjected to tensioning. Onto the thus supported and tensioned web, a print is then applied. The invention discloses the method of carrying out the above sequence, and an apparatus.

Abstract: A web is guided onto a movable support, such as a printing blanket, and the web and the support are advanced together in a common direction, but at differential speeds so that the web will be subjected to tensioning. Onto the thus supported and tensioned web, a print is then applied. The invention discloses an apparatus for carrying out the above sequence.