Abstract: A W-band waveguide variable controlled oscillator incorporating a capacitively coupled Gunn diode and varactor diode arranged in such a manner that adverse environmental conditions do not deleteriously effect the stability of the output of the oscillator. The Gunn diode is electrically connected to a waveguide chamber within the oscillator and includes a resonator electrically connected to its end cap. The resonator is electrically connected to a DC bias source by means of a DC bias filter and a wire inductor. Opposite and above the Gunn diode is a varactor assembly including a varactor diode, which is also electrically connected to a DC bias source through a DC bias filter. A variable coupling spacer within the varactor assembly adjusts the distance between the varactor diode and the Gunn diode such that the capacitive coupling between the two can be adjusted. In addition, an adjustable back-short is incorporated within the waveguide channel to adjust the power output of the oscillator.

Abstract: An improved miniature interconnect (10) for detachably introducing a transmission line (12) to a corresponding medium (20) through a passage in a barrier (18). This interconnect (10) comprises a fastening means (36), coupled to the transmission line (12) for directly engaging the passage such that the transmission line (12) is removably retained in a held relationship with respect to the barrier (18). A conducting means (38) for establishing electrical contact between the transmission line (12) and the corresponding medium (20) is disposed within the passage and is engaged by both the transmission line (12) and the corresponding medium (20). This conducting means (38) further provides a sealing means (42) for sealing the passage through the barrier (18).

Abstract: A programmable controller is used to control the operation of a xerographic reproducing machine adapted to run in a simplex or duplex mode whereby copies are made on either or both sides of web material fed in a single pass and then cut into individual copy sheets.The interval between successive image reproduction or pitch cycles can be determined by the programmable controller in accordance with manually entered input signals. The time sequence of control signals regulating the processing steps are altered to accommodate the altered cycle interval.In order to minimize the effects of noise produced by the xerographic processing environment, control signals as well as input device instruction signals are sampled a multiplicity of times and a composite result is determined before the storing or the execution of signal instructions.

Abstract: A programmable controller is utilized to control a reproduction machine for producing impressions of an original on a support material. The reproduction machine includes a photosensitive member and a plurality of discrete operating components mutually cooperable with the photoreceptive member to electrostatically produce the impressions. The programmable controller incorporates a computer which operates under the direction of a master program. The computer calculates timing signals in accordance with the program information and stores the timing signals in a memory for later actuation of the components in a properly timed sequence to produce the copies desired. The machine, under the direction of the computer, periodically checks the operability of at least one of the operating components in the interval between the timing signals. Similarly, the timing signals stored in the memory are periodically updated during the intervals between actuation of the operating components.

Abstract: An imaging lens system for electrostatic type reproduction machine or copiers utilizing a zoom lens effective to provide, within the magnification limits of the lens, infinitely variable image sizes.A control is provided to pre-set the lens to automatically give, upon actuation at least one preselected image size, with an override control to enable the lens to be set to provide any image size regardless of pre-set conditions.Further controls are provided for the machine nonimage erase mechanism to automatically compensate for changes in the image borders brought about by changes in image size due to resetting of the zoom lens. For this purpose, an infinitely variable edge fadeout apparatus is provided incorporating movable shutters to vary the effective size of the edge erasure slots in correspondence with image size together with timing controls for changing the operational timing of the pitch fadeout lamp in response to changes in image size upon resetting of the zoom lens.

Abstract: A method of laminating a cover layer for flexible circuits which provides increased flexibility. The cover layer encapsulates a flexible circuit having a plurality of spaced conductors on a flexible insulating substrate. The cover layer is a tri-layered laminate having a first layer of insulating film, a second intermediate layer of a thermosetting adhesive, and a third layer of a phenolic resin adhesive. The cover layer is bonded to the flexible circuit with the third layer of phenolic resin adhesive being contiguous the conductors.

Abstract: A cover layer for flexible circuits which provides increased flexibility. The cover layer encapsulates a flexible circuit having a plurality of spaced conductors on a flexible insulating substrate. The cover layer is a tri-layered laminate having a first layer of insulating film, a second intermediate layer of a thermosetting adhesive, and a third layer of a phenolic resin adhesive. The cover layer is bonded to the flexible circuit with the third layer of phenolic resin adhesive being contiguous the conductors.

Abstract: An asynchronous system includes a plurality of cascaded asynchronous cells in which data is transferred through the system according to the presence of data in the cells. Each cell contains two latches for storing binary data. Means are provided for feeding back to the previous cell a signal indicative of data stored in either of the latches. Transfer gate means cooperating with the latches and the feedback data presence signal provides a means by which data is sequentially transferred through the queue according to the presence or absence of data in the cells.

Abstract: A semiconductor device package which can be readily mounted on a printed circuit board without requiring soldering or intermediate connectors. A supporting substrate has a unique lead frame configuration thereon in which the leads extend around side portions of the substrate and form integral spring contacts projecting from the lower surface of the substrate. The package preferably includes a metallic stud having a head portion mounted in the substrate for receiving a semiconductor device and a rod portion extending from the lower surface of the substrate. The rod portion of the stud can be removably secured in an aperture in a printed circuit board to engage the spring contacts with corresponding conductors on the circuit board.

Abstract: A method of making a multilevel conductor pattern for a semiconductor device. An aluminum layer on the substrate surface provides a situs for first level conductors. Successive soft and hard anodization steps are advantageously used to provide excellent intralevel isolation and interlevel electrical connection in desired areas. First level conductor sites are masked and the two anodized films are selectively removed in the desired nonconductive areas. The remaining first level aluminum is completely anodized. An insulating layer is then deposited and vias are formed therethrough to connect a subsequently deposited second level metallization layer with the conductor sites.

Abstract: A high speed circuit for converting CML/ECL gate signals to TTL gate signals. The circuit includes two parallel current paths coupled to a current mirror section in which uniform current is maintained in portions of each path. Each current path includes a transistor which is coupled to the CML/ECL gate for sensing the differential voltage in the gate. The TTL gate is coupled to one of the current paths which steer current into or out of the TTL gate depending upon the differential voltage sensed in the CML/ECL gate.

Abstract: A fixture for holding a semiconductor wafer during anodization. The fixture has a major surface with a plurality of concentric ridges on the surface for supporting a semiconductor wafer, with adjacent ridges defining concentric channels therebetween. The fixture includes electrical contact means for contacting the inward surface of the wafer. At least one channel surrounds the contact and an insulating fluid is circulated in the channel to prevent the anodizing solution from electrically shorting to the contact. Means are also supplied for maintaining a vacuum in another channel to secure the wafer against the ridges of the fixture.

Abstract: A system for driving display panels includes a plurality of MOS integrated circuit chips for each character row in the display panel. Current level control means are provided by the present invention to maintain uniform brightness in all of the character display rows regardless of varying characteristics between the chips driving each row.

Abstract: A digital electrical circuit for selectively activating a clutch mechanism for controlling the return speed of a business machine carriage. A carriage speed pulse transducer provides a series of sync pulses with intervals between each sync pulse being a function of the return speed of the carriage. These sync pulses and a carriage return command pulse are gated into control circuitry. The control circuitry provides a continuous pulse when the interval of the sync pulses signals that the carriage has exceeded a desired speed. The continuous pulse is used to activate the clutch mechanism for reducing the return speed of the carriage.

Abstract: A unique contact pin configuration for an electrical connector provides an advantageous connection with a leadless semiconductor device package and a printed circuit board on which the connector is to be mounted. Each contact pin includes an elongated shaft portion, a resilient contact portion and a crossbar portion which offsets the contact portion from the shaft portion of the contact pin. Each contact pin is alternately situated 180.degree. in cavities disposed on two opposed sides of the connector. Consequently, the contact portions of the contact pins provide internal electrical connection to a leadless semiconductor device package with a small contact pad spacing, while providing an external electrical connection via the contact pin shaft portions with a larger spacing therebetween. Also described herein are distinctive stand-off bumps which are coaxial with the shaft portions of the contact pins to insure level mounting onto a printed circuit board.

Abstract: A semiconductor device package and a method of making it. A woven fiber mat impregnated with an epoxy adhesive serves as a first housing member. It includes an opening therein for receiving a semiconductor device. The housing member is placed on a supporting heat sink and a lead frame placed on top of the housing member. This subassembly is heated to bond the elements together by curing the epoxy adhesive in the first housing member. A similar second housing member is then placed over the lead frame. The second housing member includes an opening therein which is slightly larger than the opening in the first housing member. A lid is placed on top of the second housing member to cover the opening after the semiconductor device has been bonded to the substrate within the openings in the housing members. The assembly is then again heated to bond the remaining elements together with the epoxy adhesive in the second housing member to form a completed package.

Abstract: An ink jet printer has a printing head which contains at least one cavity with a discharge orifice therein for dispersing droplets of ink onto a medium for printing thereon. Means are disclosed herein for maintaining the temperature of the ink in the cavity at a preselected value prior to dispersement from the discharge orifice. Preferably, the ink is heated by an electrical heating rod mounted in the printing head adjacent to the cavity. Means are also provided for sensing the temperature of the ink in the cavity. The heating rod is selectively energized to maintain the ink at the preselected temperature by means of a feedback control circuit coupled with the sensing means.

Abstract: An MOS integrated circuit chip for both addressing and driving display devices in display panels. The chip includes low-level logic devices for receiving and manipulating data for energizing a selected number of devices in the display panel. An output driver portion is coupled to the display devices and energizes the devices in response to the data received by the input logic. The output driver portion includes a transistor in which the drain region extends deeper into the substrate than the source region of the transistor, as well as the remainder of the active regions in the integrated circuit chip. Accordingly, the integrated circuit chip can withstand a high breakdown voltage at its driver output, while also providing high density logic devices thereby minimizing discrete components and their associated separate electrical interconnections.

Abstract: A semiconductor device package which can be readily mounted on a printed circuit board without requiring soldering or intermediate connectors. A supporting substrate has a unique lead frame configuration thereon in which the leads extend around side portions of the substrate and form integral spring contacts projecting from the lower surface of the substrate. The package preferably includes a metallic stud having a head portion mounted in the substrate for receiving a semiconductor device and a rod portion extending from the lower surface of the substrate. The rod portion of the stud can be removably secured in an aperture in a printed circuit board to engage the spring contacts with corresponding conductors on the circuit board.

Abstract: A loader-unloader is disclosed which can controllably move a workpiece into and out of a workstation in a machine without danger to the machine operator. The loader-unloader has a table which supports the workpiece and aligns it with the workstation. A plurality of clamps are used to grip the workpiece. One clamp is provided for each part of the workpiece exiting the machine. The working faces of the clamps make point or line contact with the workpiece so that it can be moved slightly in the clamps under the influence of aligning means on the table and in the machine. The clamps lift the lower portion of the workpiece as it is moved toward the workstation to reduce frictional resistance and to prevent the lower portion of the workpiece from being scratched. In operation, the machine operator places the workpiece on the table and initiates the loader-unloader cycle. The workpiece is clamped and aligned and then moved forward into the workstation.