公开(公告)号：US10328691B2

公开(公告)日：2019-06-25

申请号：US15898129

申请日：2018-02-15

Applicant: XEROX CORPORATION

Inventor： Curtis Douglass Keller ,  Gautam Dhar ,  David Lylell Knierim ,  Chad David Freitag ,  Jonathan Robert Brick ,  Douglas Dean Darling ,  Nasser Alavizadeh ,  Bradford Stewart ,  William Bruce Weaver

IPC: B41J2/045 ,  B41J2/17 ,  B41J2/175

Abstract: A print head has a jet stack, a jet stack heating and temperature measuring element thermally connected to the jet stack, the jet stack heating and temperature measuring element including: a first, etched copper layer having heat spreading characteristics and including a resistive heat source electrically connected in series to a voltage source and a switch; an electrically insulative on a back side of the first copper layer; and a second, etched copper layer on a side of the electrically insulative layer opposite the first copper layer, the second copper layer having a temperature sensing element to sense a temperature of the print head without a thermistor, the temperature sensing element connected in series with a voltage source and a transistor. A print head may use a thermistor but the heat spreading layer eliminates the need for a heat sink to attach to the print head.