Abstract: Automatic registration apparatus for multi-color silk screening of elongated articles, such as writing implements, includes a carriage for rotatably supporting the articles with respect to the longitudinal axis thereof and magnetic means on the carriage for drawing a magnetically attractable index on the article, for example a pocket clip, so that a surface on the article is oriented in predetermined disposition with a pattern in the silk screen stencil. The carriage is also adapted to lift the articles from a high speed conveyor into contact with the silk screen stencil.

Abstract: A device for treating a web or the like adapted for screen printing including a magnetizable wiping roller or squeegee mounted on a working carriage, a printer's blanket carrying the web, a magnetic beam disposed below the printer's blanket, and rails rollably supporting the magnetic beam. The magnetizable wiping roller is urged towards the web through movement of the working carriage in the longitudinal direction of the printers blanket, and guided thereover by the magnetic beam in the course of printing on the web. The web is stationary during treatment. An electric motor is provided for moving the magnetic beam and the motor drives at least one drive wheel engageable with the rails for moving the beam. Speed and position of the wiping roller is determined by a sensor arrangement responsive to deviation of the working carriage from the magnetic beam path.

Abstract: A new and improved insect trap utilizes one conventional light bulb in conjunction with a large transparent sheet or plate of Plexiglass or other suitable material of large surface area arranged to provide a light source causing insects to be attracted from both sides of such transparent plate having a large surface of area which obstructs the insects' flight path. This effectively attracts and entraps large numbers of flying insects causing them to strike the plate and be stunned and fall into an insect destroying liquid bath from both sides of the flight-obstructing transparent plate.

Abstract: For the purposes of removing a used stencil or an ink screen from the cylinder(s) of a duplicator, a rotatable core alongside the duplicator cylinder is driveable by a drive transmission from the main duplicator drive, by way of a freewheel clutch such that the core is driven only when the duplicator cylinder is rotated in the reverse direction as compared with the normal direction of rotation during printing, and also by way of a friction-slip connection arranged such that with no slip the peripheral speed of the core is higher than that of the duplicator cylinder along which it is mounted.

Abstract: Axially adjacent first, second and third carriages are independently rotatable about a common vertical axis. The first carriage supports a plurality of platens which are spaced from the axis of rotation. The second and third carriages have a plurality of mechanisms which support a circumferentially disposed group of silk screen frames, respectively, for selectively pivoting between an inactive position wherein each screen is at an acute angle with respect to horizontal and an active horizontal position wherein the screen selected for printing is brought into contact with a platen on which there is material to be printed. The lowermost group of screen frames are arranged on the second carriage with at least one angular gap between them when they are in their angulated inactive positions.

Abstract: A device for adjusting the phase of a flat screen in an automatic flat screen printing machine, which comprises a supporting member for supporting a flat screen, a supporting and driving system for supporting said screen supporting member in such a state that the screen supporting member can be moved in the lengthwise direction of the machine, at least one adjustment screw mechanism for connecting said screen supporting member to said screen supporting and driving system, a phase adjustment driving mechanism for turning said screw mechanism to displace said screen supporting member in the lengthwise direction of the machine.

Abstract: A large sized screen plate of a metal mask type for use in printing a conductor on a thick-film-circuit substrate and the like. This metal screen comprises a metal pattern layer with pattern openings corresponding to patterns to be printed and a mesh layer made with fine metal mesh members or wires which are integrally formed on one surface of the metal pattern layer. A pattern opening corresponding to wide pattern lines to be printed is provided with the mesh layer thereover and another pattern opening corresponding to narrow pattern lines to be printed is free of the mesh layer. The metal screen thus formed enables printing of fine lines having a minimum width of 40 microns.

Abstract: Stencil exposure apparatus having a flexible compressible peripheral seal element suspended by a plurality of radiating tension straps in a selected configuration between a translucent stencil pattern support surface on one side, and a stencil fabric layer retained in a stencil frame or chase on the other side, there being a suction connection for the space enclosed by said seal, said translucent surface, and said stencil fabric.In one apparatus embodiment disclosed, the peripheral seal is a traveling seal suspended on a stencil frame carriage which is selectively shiftable relative to the translucent surface and supports the stencil chase.In another apparatus embodiment disclosed, the tension straps are shiftable to vary the dimensions of the area enclosed by the peripheral seal.

Abstract: There is disclosed an improvement in a system for sensing information encoded on a duplicating original, using the information to control copy processing. A duplicating original is installed onto the surface of a cylinder revolving in the duplication process. The encoded information, in the form of indicia printed on the original, is sensed by an optical read head arranged to scan the revolving cylinder. Signals indicating the position of the revolving cylinder are used to determine when to scan for information. Finally, the information sensed, e.g., the copy quantity, is used to control the processes of the duplicating machine. The manner in which the encoded information is arranged conforms to the writing capabilities of a computer output printer, which is preferably also used to prepare the body of text material being duplicated, and the read head is arranged to sense the thus applied indicia and reproduce the information accurately, allowing wide latitude for correct placement of the information.

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: A squeegee assembly for stencilling apparatus employing cooperative front and rear panels astraddle the squeegee, the panels being shiftable between (1) an extended condition away from the squeezee and in which such cooperatively form an open bottom chamber for the stencilling fluid about the squeegee, and also the rear panel serves as a flow coater and the front panel serves as a fluid barrier, and (2) a retracted position at the squeegee to close the fluid chamber about the squeegee. BACKGROUND OF THE INVENTIONThis invention relates to stencilling apparatus, and more particularly to a stencilling assembly with control of the stencil fluid.In recent years, several developments have been made in squeegee assemblies of stencilling apparatus to obtain better control of the stencil fluid characteristics during continued stencilling.

Abstract: A silk screen printing machine comprises a frame, a pair of parallel spaced-apart levers pivotally mounted on opposed side walls of the frame, and a hydraulic or pneumatic cylinder connected to one of the levers for raising and lowering a pair of parallel bars of which one is connected between a pair of corresponding ends of the levers. A carriage for the silk screen is mounting for translational sliding movement on the bars. A transverse member is provided for supporting a squeegee carrier unit cooperable with the silk screen for printing on an object. A longitudinal bar parallel to the bars carries the transverse member and is secured at its ends beyond the limits of the stroke of the carriage along the bars to connecting links in which the bars are journaled at their ends.

Abstract: An arrangement on screen printing machines for interchangeable holding and lengthwise tensioning of rotary screens which have face-side end sections that can be connected to rotary holding sections. The holding sections are mounted on nonrotary bearing housings which are connected to at least one lengthwise carrier. The latter is located on the outside of the rotary screen, parallel to the screen axis, and fastened to the machine frame. The rotary holding sections enclose the nonrotary bearing housing peripherically from the outside. The bearing housings are connected to the lengthwise carrier by cross arms. The nonrotary bearing housing comprises a nonrotary hollow cylinder which projects beyond the rotary holding sections in axial, lenthwise, direction of the screen axis. The hollow cylinder, furthermore, may have at least two cylinder sections and a ring-shaped elastomer intermediate member located between the cylinder sections.

Abstract: Continuous, automatic printing of ordinary fabrics and cloths and screen printing of papers, films, metal foils and metal sheets is disclosed. Printing is accomplished by contacting a squeegee member, to which the printing paste or ink has been applied, with the material to be printed through a flat screen (stencil).The material to be printed is fed continuously at a constant speed in a supported state to a printing operation zone. The flat screen is reciprocated in the longitudinal direction at the same speed and in the same direction and in contact with the material to be printed. The squeegee is scanned from one end of the flat screen to the other to effect the printing operation. The contact between the flat screen and material to be printed is released just before the squeegee member arrives at the other end of the screen. The screen and squeegee member are then moved to their original position so that the operation may be repeated.

Abstract: A screen for use in a silk screen printing process is made by a process comprising the steps of forming a positive image of a desired print, applying it to a screen so as to obstruct apertures therein corresponding to said positive image, filling all unobstructed apertures in the screen with a flexible polymeric material and then removing the positive image.

Abstract: A doctoring device for a printing block such as a screen stencil. The doctor profile frictionally holds the doctor blade which is both reversible and replaceable. An elastomer profile may be provided to resiliently support a portion of the doctor blade adjacent its working edge.

Abstract: A method of rapidly applying marks by spraying ink or another marking substance on to articles which move at a high speed or from a marker which is moving rapidly, comprising the step of speeding up the ink to be sprayed by centrifugal acceleration produced by rotation around an axis and guiding the ink during acceleration, so as to produce at least one ink jet along a sweeping path directed, during a fraction of a revolution, towards the article to be marked.

Abstract: A printing machine with rotary screens particularly adapted for printing fabrics in which a squeegee-mounting tube extends through each screen supported by a pivotable arm which turns about a vertical axis making it possible to move the arm completely away from the entrance to the screen to facilitate squeegee placement and removal; the height of the arm being adjustable by a composite jack on the axis of rotation of the arm for expediting screen changing or cleaning operations.

Abstract: A screen station for a rotary screen-type printing machine including a frame for carrying a rotary screen; the screen has an axis, and the frame includes two struts disposed in parallel with the axis and carry four feet; the four support feet of the frame rest on a support; one foot pivotably supports the frame, and at least two of the feet are horizontally slidable with respect to the support or the struts.

Abstract: A label printer of the type employing a stencil covered cylinder in which the stencil may have any one of plural arcuately spaced apart indicias cut therein separately printed therefrom. The label printer includes means for indexing the printing cylinder to any one of two or more positions for the optional printing of the separate contents of any one of the arcuately spaced apart portions of the stencil on the same machine.