Graphic arts media are provided which offer raised, three-dimensional effects. A basic medium is formulated of a colorant, film-forming binder, a solvent vehicle and thermally expandable microspheres. The microspheres are treated to preclude or inhibit solvation in the solvent vehicle by coating with a compound which is a non-solvent for the microspheres but which preferentially wets the surface thereof. Alkyl alcohols having about 3 to 5 carbon atoms in the alkyl chain are employed. The medium ...

A toy for randomly creating stationary and moving graphic reprensentations and images includes a multi-sided housing for mounting the image producing mechanism. The image producing mechanism includes at least a pair of rotatable, planar elements or sheets and a drive mechanism. One sheet includes graphics combined with a plurality of cutout portions. Another sheet is mounted behind the first sheet and includes multiple graphics that are intended, in their stationary position, to be aligned with ...

An optical system for selectively positioning one of a pair of optical elements at the optical axis of a photolithographic platemaking system to readily produce either "right reading" or "wrong reading" images upon the imaging plane containing the photolithographic material.

A graphic recorder of the vacuum column buffer type has a pair of wells into which the two loops on the sheet material are drawn down. Top and bottom sensors are provided in each well for maintaining the loops within a predetermined range of movement; but in addition, the supply and take-up rolls are slaved to the speed of the drum. Cross-coupling is provided between the two wells to tend to equalize the vacuums therein.

An original is first illuminated with a light beam of white color or a wavelength adapted for reading of the original, and an optical image of the original is focused on a photosensitive drum previously charged uniformly, to form an electrostatic latent image on the photosensitive drum. Thereafter, the photosensitive drum is scanned with a laser beam, and a discharge current attendant on the scanning is detected and converted into an electric signal representative of the optical image. Thus, a m...

This invention comprises a display especially suitable for a large system, such as a utility distribution network diagram, a map, or the like, which is subject to frequent revision. The complete display is made up of a multiplicity of small display members arranged in abutting relationship, which can be revised and replaced individually as necessary to keep the entire display up-to-date, without the necessity of replacing the complete display. A frame having an array of apertures, each smaller t...

An X-Y coordinate position locating or measuring digitizing device in which a cursor (inductor), moveable within an electromagnetic field generated by successively activated grid wires, develops a voltage from the field, and, in conjunction with conditioning circuits, yields the electrical intelligence required to indicate its position with a high degree of precision. Currents are successively passed through parallel grid lines for a given axis at discretely separate distances, the resultant suc...

A graphic and video are blended by controlling the relative transparency of corresponding pixels in the graphic and the video through the use of blending coefficients. One example of a blending coefficient is an alpha signal used in conjunction with a keyer. The value of a blending coefficient for a pixel in the graphic is based on the luminance and chrominance characteristics of a neighborhood of pixels in the video. Inclusions and exclusions are set up which define how the neighborhood of pixe...

A pair of input signals corresponding to X and Y coordinate information are processed and simultaneously applied at certain time intervals to a display system, and the points represented by said pair of input signals are successively connected by straight lines. In a first embodiment of the signal processing, wherein the input signals and digital signals, such input signals are applied to a first digital analog converter for converting the digital signals into related quantum analog voltages whe...

The copying machine includes both line and frame exposing means for a photoelectrostatic member and controls for conditioning the machine to operate in one of these two modes. A movable charging assembly is positioned in different locations in the two modes by the control, and other factors such as charging voltage, speed of movement of the member, and the continuous or intermittent nature of the charging operation are changed by the control in accordance with the copying mode for which the mach...