Abstract: An inking device of a printing unit includes an ink reservoir, an ink film pick-up roller which has a shaft, and an inking roller having a shaft. A detector detects the distance between the inking roller and the pick-up roller and/or an angular displacement of the two shafts relative to each other and providing an output signal which represents this distance and/or this angular displacement. A controller angularly the second shaft relative to the first shaft, and the controller is capable of reducing the angular displacement and of positioning the pick-up roller in accordance with the output signal.

Abstract: A stamp of liquid-exuding type has a multiple-seal-faced assembly adapted for stamping with selected one of these multiple faces, preferably for stamping with multiple colors.

Abstract: Porous inking members for impact printers and methods of making the same which control the ink transfer flow rate from the porous inking members to dot matrix or other impact print heads. One preferred embodiment of the porous inking members for impact printers and methods of making the same uses peptizer and liquid nitrile rubber as ingredients in the manufacturing process to produce porous inking members.

Abstract: The intaglio printing machine has three machine stands (I, II, III). Essentially, the impression cylinder (1) and the plate cylinder (2) are mounted in the first stand (I), the stencil rollers (10) and the inking unit (11) are mounted in the second stand (II), and the color-collect cylinder (8) is mounted in the third stand (III). The third stand (III) is adjustable in such a way that it can be removed from the space between the first and second stands and brought into an inoperative position, so that it is possible to bring the second stand (II) up against the first stand (I) to form an intaglio printing machine with direct inking. This results in a convertible intaglio printing machine by means of which a collect intaglio print can be made in a first operating position, in which all three stands assume their working position, and a direct intaglio print can be made in a second operating position, with the use of only the first and second stands.

Abstract: An ink roller for a rotary printing press has a hollow axle that receives ink from a pressurized ink supply. The axle is provided with a plurality of radial bores that are selectively aligned with similar radial in concentrically arranged inner and intermediate sleeves. A porous outer sleeve is concentric with the intermediate sleeve. The inner sleeve oscillates on the axle while the intermediate sleeve and the outer sleeve both rotate at different speeds to provide the outer sleeve with a positive rotational speed differential.

Abstract: Apparatus for marking an edge of an envelope moving in a first, substantially horizontal plane. The apparatus includes: a supporting arm; a mechanism for simultaneously rotating the arm in a second plane substantially parallel to the first plane and translating the arm perpendicular to the second plane; and a marker for applying ink to the envelope edge secured to the supporting arm. The marker includes a roller for contacting the envelope edge, a reservoir for storing a supply of ink, and a device for feeding the ink from the reservoir to the roller, whereby at an appropriate time the marker may be rotated and translated from a nonmarking position into a marking position adjacent the envelope edge for marking the envelope edge.

Abstract: A flush inking unit for a screened surface ink fountain roller utilizes an inking groove spaced from and located within a housing to supply ink to the ink fountain roller. Ink dividing plates of the ink groove are spaced from the surface of the ink fountain roller. Printing ink which is supplied to the inking groove and which passes out of the groove through the spaces between the ink dividing plates and the roller is collected in the housing and returned to an ink supply reservoir.

Abstract: An improved value print device having incorporated within the device improved mechanism for detachably coupling a housing with an inking roller to a reciprocal carriage and new structures on the housing for permitting the convenient removal of the housing and inking roller from the carriage.

Abstract: A line coder system includes an upright post mounted on a conveyor line and having an outstanding arm on which a rotatably mounted printing roller is mounted in association with a rotatable ink reservoir, the inward end of the arm being rotatably mounted on a shaft. A cross head mounted on the upper end of the shaft has a pin which engages the outer end of a spring assembly which tends to return the arm to a preselected position after it is moved by the containers which engage the printing roller.

Abstract: A rotatable ink reservoir which is caused to rotate by engagement with a rotatably mounted printing roller has its ink continually replenished in proportion to the rotation of the printing roller by a container of ink having a ball feed discharge element that is mounted on an arm adjacent to the conveyor so that it engages the upper surface of the ink reservoir spaced from its axis.

Abstract: An ink roller assembly for attachment to a tape printer or the like includes a pre-inked roller rotatably mounted between a pair of hanger brackets of substantially greater diameter and capacity than the standard pre-inked roller included with the machine. The hanger brackets are adapted to mount to an eccentric shaft which can be rotated to finely adjust the pressure of the ink roller against the print wheel. Several cross shafts extend between the hanger brackets to provide support with one of the cross shafts having a threaded hole therein for insertion of a threaded screw against the frame of the machine to adjust the pressure of the over-sized ink roller against the print wheel.

Abstract: A printing roller is provided wherein such roller comprises an inner layer and a concentric ink applying tubular outer layer made of a microporous rubber material having cavities interconnected by passages defining a first ink flow control means. The inner layer is made of a sintered mass of material having a reticulated open pore structure which is harder than the outer layer, and acts as a second ink flow control means to provide uniform inking. The layers cooperate to define a substantially rigid roller having a soft ink applying layer.

Abstract: A process for controlling the position of fibrous webs to be printed by applying thereon a ferromagnetic printing paste in the form of very small dots which are not visible or palpable, which paste consists of at least 85% by weight, based on the total solid content, of a finely divided ferromagnetic material and furthermore of a cellulose ester and a solvent having a boiling point above 130.degree. C.