公开(公告)号：US20150054878A1

公开(公告)日：2015-02-26

申请号：US13973794

申请日：2013-08-22

Applicant: XEROX CORPORATION

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

IPC: B41J2/045

CPC classification number: B41J2/04563 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/1707 ,  B41J2/17593

Abstract: Print head jet stack heating and temperature measurement systems and methods are disclosed that both heat the jet stack and determine a temperature of the jet stack. The heating and temperature determination are performed by a flex circuit that includes multiple layers. One of the layers heats the jet stack and another one of the layers provides data that determines the temperature of the jet stack. The heating layer and the temperature sensing layer are separated by an insulative material in the flex circuit. The temperature of the jet stack can be sent to a print head controller that then determines whether to increase or decrease the temperature of the jet stack.

Abstract translation: 公开了打印头喷射器堆加热和温度测量系统和方法，其均加热喷射叠层并确定喷射叠层的温度。 加热和温度测定由包括多层的柔性电路进行。 其中一个层加热喷射堆叠，另一个层提供确定喷射堆的温度的数据。 加热层和感温层由柔性电路中的绝缘材料分开。 喷射堆叠的温度可以被发送到打印头控制器，打印头控制器然后确定是否增加或降低喷射叠层的温度。

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.

公开(公告)号：US09931840B2

公开(公告)日：2018-04-03

申请号：US13973794

申请日：2013-08-22

Applicant: XEROX CORPORATION

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

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

CPC classification number: B41J2/04563 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/1707 ,  B41J2/17593

Abstract: Print head jet stack heating and temperature measurement systems and methods are disclosed that both heat the jet stack and determine a temperature of the jet stack. The heating and temperature determination are performed by a flex circuit that includes multiple layers. One of the layers heats the jet stack and another one of the layers provides data that determines the temperature of the jet stack. The heating layer and the temperature sensing layer are separated by an insulative material in the flex circuit. The temperature of the jet stack can be sent to a print head controller that then determines whether to increase or decrease the temperature of the jet stack.

公开(公告)号：US09849689B1

公开(公告)日：2017-12-26

申请号：US15332620

申请日：2016-10-24

Applicant: XEROX CORPORATION

Inventor： Reid W. Gunnell ,  Nasser Alavizadeh ,  Douglas Dean Darling ,  Walter Sean Harris ,  Megan Schaffer ,  David L. Knierim

IPC: B41J2/17 ,  B41J2/175 ,  B41J2/19 ,  B41J2/18

CPC classification number: B41J2/17596 ,  B41J2/175 ,  B41J2/18 ,  B41J2/19

Abstract: A method of filling a print head includes drawing a vapor into an empty print head to displace any air in the print head and filling the print head with ink. A method of filling a print head includes connecting a print head to a vacuum pump using a first valve, to a liquid supply using a second valve, and to an ink supply using a third valve, opening the first and second valves, applying vacuum to the print head and liquid supply using the vacuum pump, causing the liquid to generate a vapor that moves into the print head, closing the first valve and the second valve, and opening the third valve to move ink into the print head.