Abstract: The waveform generator includes a free-running ring oscillator, an algebra module, a switching module and an output module. The free-running ring oscillator includes a plurality of delay elements connected in a loop and a plurality of taps disposed between the delay elements, with each tap providing a uniquely phased, oscillating transition signal. The algebra module generates an output signal indicating a first rising edge of the arbitrary waveform in response to an input signal. The switching module includes a switch input port in electrical communication with the algebra data output port, a plurality of switch tap input ports in electrical communication with the free-running ring oscillator taps and switch output port. At the switch output port, the switch module provides a first transition signal selected from one of the plurality of free-running ring oscillator taps in response to the signal indicative of a first rising edge received at the switch input port.

Abstract: An improved method of electrophotographic color printing in which only a single pass of a drum or belt is needed for formation and transfer of the toner image onto a desired medium by utilizing a transparent drum or belt for the supportive member for the photoconductive material, and exposing from the inner side of the drum or belt. The invention includes, among others, a method of synchronous laser-beam exposure that provides improved registration of images, methods of exposure for small diameter drums, a method to achieve a longer-lived drum or belt, an improved fusing method, methods of improving the toning process, and methods to achieve an improved image quality.

Abstract: A free loop oscillator system including a set of successive delay elements connected in series forming a free running loop oscillator, a set of taps disposed between the delay elements, a circuit for determining the speed of the free-running loop oscillator, and circuit for choosing a given tap in response to the speed of the free-running loop oscillator. Such a system may be implemented as a part of interval timer, a printer controller, a frequency synthesizer, an FM modulator, a digital-to-analog converter, or any other device which requires the availability of finely addressable signals since the taps disposed between the delay elements present signals much finer than any presently available clock.

Abstract: A free loop oscillator system including a set of successive delay elements connected in series forming a free-running loop oscillator, a set of taps disposed between the delay elements, a circuit for determining the speed of the free-running loop oscillator, and circuit for choosing a given tap in response to the speed of the free-running loop oscillator. Such a system may be implemented as a part of interval timer, a printer controller, a frequency synthesizer, an FM modulator, a digital-to-analog converter, or any other device which requires the availability of finely addressable signals since the taps disposed between the delay elements present signals much finer than any presently available clock.

Abstract: A raster scanning print engine driver accomplished by establishing a pixel scan time period representing a pixel print area, generating a number of pixel signals independently representative of the position and of the length of each line segments to be printed in the pixel print area, and producing from the pixel signals a pulse width and position modulated print engine drive signal representative of the position and length of the line segments to be printed in the pixel print area.

Abstract: A raster print engine driver for generating from incoming data representative of a continuous tone or text image, a transition-modulated engine drive signal for causing the engine to reproduce the image as a series of modulated print lines, in which the driver establishes a cell scan time period representing the horizontal length along a print line of an elemental cell print area, and generates from the incoming data in the cell at least zero or two independently located drive signal transitions which cause the print engine to change state at selected points along the print lines to closely reproduce the image.

Abstract: A method of converting existing copiers to laser printer engines by externally attaching an apparatus to the copier with no significant alteration of the copier engine, and attachable in an easily removable manner. The apparatus consists of a laser together with an optical system having means for modulating and scanning the laser beam, which enters the copier and passes through the copier's existing imaging lens. The apparatus incorporates a specially designed field mirror that simplifies that optical system.

Abstract: The present invention is a simple, inexpensive and lightweight straight-cut saw guide comprising a rigid structural guide member with a number of holes along its axis, a screw driven holding clamp which is attached at one end of the guide member and provides an abutment for engaging one end of the work piece, and a stop clamp with an abutment for engaging the other end of the work piece. The stop clamp is inserted through any one of the holes in the guide member at varying distances from the holding clamp depending upon the size of the work piece to be held and cut. The screw driven holding clamp serves to clamp the saw guide onto the work piece after the abutment is in place.

Abstract: A membrane panel including at least one electrical component. The panel includes a rigid support member having substantially planar top and bottom surfaces. At least one void region, or hole, extends from the bottom surface of that support member. A flexible top member including at least one flexible layer, overlies the support member. A flexible bottom member including at least one flexible layer underlies the support member. The bottom member has its upper surface affixed to the bottom surface of the support member. Further, the bottom member includes an integral flexible tail. The bottom member includes at least one electrical component affixed to its upper surface with that component underlying and extending into an associated one of the void regions of the support member. An electrically conductive pattern is affixed to the upper surface of the bottom member and that pattern is electrically coupled to the component to permit its operation in an electrical network.

Abstract: A thin polypropylene film with improved surface impregnation properties for dielectric fluids is disclosed. The film has one predetermined textured surface consisting essentially of fibroids intertwined and overlapping, and coextensive and uniform over its continuous length and is characterized by a space factor of above about 5%.

Abstract: Apparatus for directing a jet of fluid at a target to deposit a desired image thereon. The apparatus employs a nozzle with a pointed nozzle nib, a supply of fluid for the nozzle, and a pressure regulator controlling the pressure of the fluid at the nozzle upstream of the nib. The jet of fluid is accelerated from the nozzle nib and caused to flow to the target by the creation of an electric field in the region between the nozzle and the target. The fluid jet is substantially prevented from breaking up into droplets during flight by a combination of techniques so that the fluid flows to the target as a solid liquid filament or as a stream of mist-size droplets which are so small and so closely spaced that they behave like a solid liquid filament. The amplitude of the fluid flow is continuously modulated in response to an information signal by fluid surface pumping action or other means to produce the desired fluid image on the target.

Abstract: A thin polypropylene film with improved surface impregnation properties for dielectric fluids is disclosed. The film has one predetermined textured surface consisting essentially of fibroids intertwined and overlapping, and coextensive and uniform over its continuous length and is characterized by a space factor of above about 5%.

Abstract: An improved process of producing a predetermined textured surface on a polypropylene film is disclosed including the steps of extruding the polypropylene into a stalk, cooling the stalk to crystallize the polypropylene, passing the stalk through a heating zone and biaxially stretching the stalk into a thin film. The stalk emanating from the extruder has a section primarily temperature controlled and correlated to the stalk velocity to cause extensive, continuous and uniform spherulite formation with a predominantly type III polypropylene crystal structure on the outer surface of the stalk, which upon subsequent inflation of the stalk causes the desired texture to occur.

Abstract: A metallized polypropylene film with improved surface impregnation properties for dielectric fluids is disclosed. The film has one predetermined textured surface and is characterized by a space factor of above about 5% and has an electrical conductive metallic coating on one surface.

Abstract: A conveyor moves a series of cartridges containing undeveloped film and sender-identified mailers in correlated side-by-side relation from a loading station past a cartridge sensing station, a dual labeling station, and a plurality of discharge stations. Information sensed from each cartridge is stored in a memory and later controls the off-loading of the correlated cartridges and mailers at an appropriate one of the discharge stations from which the cartridges go their separate ways for film processing. Prior to off-loading, the side-by-side cartridge and mailer receive separate labels preprinted with correlating indicia enabling the developed film and the mailer to be correctly reunited for return to the sender.

Abstract: The color-coded index tab is produced automatically by passing a tape through a label applying machine which is programmed by a computer to apply color-coded labels at precise locations of the tape. The tape is afterwards severed to produce the individual index tab for subsequent application to a file holder. The index tabs can be folded or not about the longitudinal center line so that the block of color on each label can be exposed around the edge of the file holder or on a flat edge surface of the file holder for viewing purposes. The individual index tabs and labels can be sized to present any number of different color coded blocks.