Pitney Bowes Inc.

Kjell A Heitmann

Douglas A Clark

Paul G Perreault

Edward J Naclerio

Peter C Di Giulio

Bruce E Inpyn

A tamper protected printed circuit board assembly including a printed circuit board and a partially enveloping tamper wrap covering the entirety of the top surface of the printed circuit board and a first portion of the bottom surface of the printed circuit board, wherein a second portion of the bottom surface of the printed circuit board is not covered by the tamper wrap is provided. The printed circuit board includes two security trace layers each having two security traces thereon, preferably in a serpentine pattern. The tamper wrap and the security traces together cover and prevent tampering with the electronic circuitry of the printed circuit board.

Method of making tamper detection circuit for an electronic device

Tamper barrier for electronic device

A tamper protected printed circuit board assembly including a printed circuit board and a tamper wrap attached to the printed circuit board. The tamper wrap includes a plurality of side tabs extending from a main body portion and a plurality of corner protection flaps extending from the side tabs. The tamper wrap covers the entirety of a first surface of the printed circuit board and at least a portion of a second surface opposite the first surface of the printed circuit board. Each of the side tabs covers at least a portion of one of the side walls of the printed circuit board and each of the corner flaps is folded around and covers a respective one of the corner edges of the printed circuit board. The printed circuit board may have a plurality of corner sentinels mounted adjacent to the corners of a surface thereof for protecting such corners.

Tamper barrier enclosure with corner protection

A method of attaching a tamper wrap to a printed circuit board using an installation tool that is placed over the main body portion of the tamper wrap. The side tabs of the tamper wrap are folded up against the side walls of the installation tool, and the tamper wrap and the installation tool are inserted into an enclosing case. The installation tool is then removed, the printed circuit board to be wrapped is placed into the enclosing case, and the side tabs are folded and adhered down onto the top surface of the printed circuit board. Also, a printed circuit board assembly having improved heat sinking capabilities including a thermally conductive material located between a printed circuit board and a tamper wrap such that the electronic components are in thermal contact with an enclosing case for enclosing the printed circuit board and the tamper wrap.

System and method for installing a tamper barrier wrap in a PCB assembly, including a PCB assembly having improved heat sinking

A circuit connecting device for use with a digital printing apparatus is disclosed, the digital printing apparatus having a jet module assembly, a plurality of ink ejecting devices mounted in the jet module assembly, a corresponding plurality of ink ejecting nozzles formed on a nozzle plate mounted on an exterior of the jet module assembly, conduit means within the jet module assembly communicating between the ink ejecting devices and the nozzles, and a control electronics component for controlling the sequence of activation of the ink ejecting devices to cause ink to be ejected from the nozzles onto an image receiving medium during relative movement between the print head and the image receiving medium. The circuit connecting device has a pair of plates on which there is an electric trace pattern on the exterior surface of each plate and an electronic driver chip mounted on the exterior surface of each plate, and means for connecting the trace patterns to the electronic driver chips and to the control electronics component on the input end of the electric traces and to the ink ejecting devices on the output end of the electric traces, thereby eliminating all hard wiring between the control electronics component and the ink ejecting devices of the jet module assembly.

Digital printing apparatus

A universal electrical bus connector is disclosed which is multi-functional in serving to connect a power and communications bus passing through the connector to a printed circuit board module to permit tapping into selected wires of the bus for utilization in the module, to connect separate power and communications buses together at any location to extend the bus within a machine harness, and to connect separate power and communications buses together at a printed circuit board module both to extend the bus and permit tapping into selected wires of the extended bus for utilization in the module. The connector includes essentially a housing having a plurality of electrical contact devices which connect between individual wires of a bus and contact areas formed on the surface of the printed circuit board module. A cover is fitted over the housing which has the effects both of tightly enclosing the wires of the bus within channels formed in the upper wall of the housing the the lower wall of the cover and causing insulation to be stripped from the wires so as to make electrical contact with the contact devices in the cover. For extending buses, two housing and cover assemblies are utilized, one for each bus, with the housings being joined in face to face relationship and with the electrical contact devices of each housing in contact with each other.

Growing community of inventors

Norwalk, CT, United States of America

Kjell A Heitmann