Field enhanced solid-state heater element useful in printing applications

    公开(公告)号:US10146161B2

    公开(公告)日:2018-12-04

    申请号:US15445961

    申请日:2017-02-28

    Abstract: An improved fuser includes a heater using a solid-state heater element with high frequency field propagation to provide an effective increase in the energy conduction through the fusing belt allowing increased throughput rates over conventional conduction systems. The system employs a solid-state heater with internal circuitry to drive a high frequency field though the fuser belt to the elastomeric top coat, which is laced with high frequency receptors. The belt is then heated directly on the surface bypassing thermal conduction interfaces and is also simultaneously heated by conduction from the waste energy of the heater element.

    Fuser for electrophotographic printing having resistive trace with gap

    公开(公告)号:US09727014B1

    公开(公告)日:2017-08-08

    申请号:US15224300

    申请日:2016-07-29

    CPC classification number: G03G15/2028 G03G15/2053

    Abstract: A fuser includes a fuser roll and a pressure roll that forms a nip between the rolls through which a sheet is conveyed to permanently fuse an image onto the sheet. The fuser roll includes a heater element having a single resistive trace, a common trace tapped to a first side of the resistive trace continuous across the resistive trace, and first and second conductive traces tapped to ends of the resistive trace at a second side of the resistive trace opposite the first side. The first and second conductive traces are physically separated and conductively segmented by a conductive gap between the conductive traces. The resistive trace includes a separation gap extending through the resistive trace continuously from the second side of the resistive trace at the conductive gap towards the first side of the resistive trace to prevent current flow between the segmented conductive traces.

    Solid state fuser heater and method of operation

    公开(公告)号:US10078299B1

    公开(公告)日:2018-09-18

    申请号:US15462520

    申请日:2017-03-17

    Abstract: A fusing apparatus includes a heater that heats a fuser belt at a nip between the fuser belt and a pressure roll through which a sheet is conveyed to permanently fuse an image onto the sheet. The heater has a silicon wafer with a smooth side that contacts and heats the fuser belt at the nip, and circuitry at a second side, with the circuitry generating heat through the silicon wafer to heat the fuser belt. The circuitry may include a plurality of heat producing integrated circuits etched in the silicon wafer, with each heat producing integrated circuit configured to heat the fuser belt. Each integrated circuit may self-control its amount of heat produced to the silicon wafer, for example, by automatically switching back and forth between a heat-on-state and a heat-off-state to maintain a desired temperature within the silicon wafer that heats the fuser belt.

    Fuser for electrophotographic printing having resistive trace with gap

    公开(公告)号:US10336116B2

    公开(公告)日:2019-07-02

    申请号:US15595186

    申请日:2017-05-15

    Abstract: A fuser includes a fuser roll and a pressure roll that forms a nip between the rolls through which a sheet is conveyed to permanently fuse an image onto the sheet. The fuser roll includes a heater element having a single resistive trace, a common trace tapped to a first side of the resistive trace continuous across the resistive trace, and first and second conductive traces tapped to ends of the resistive trace at a second side of the resistive trace opposite the first side. The first and second conductive traces are physically separated and conductively segmented by a conductive gap between the conductive traces. The resistive trace includes a separation gap extending through the resistive trace continuously from the second side of the resistive trace at the conductive gap towards the first side of the resistive trace to prevent current flow between the segmented conductive traces.

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