### Uittreksel

In a method for identifying of and distinguishing between at least two different predetermined disturbance states in an inkjet print head, the method comprises providing a disturbance identification input signal; applying the disturbance identification input signal to an actuator, the actuator being part of an ejection unit of an inkjet print head; receiving a residual pressure wave output signal; and analyzing the residual pressure wave output signal. The step of analyzing comprises designing and providing a respective mathematical analysis operator for each identifiable disturbance state; executing each respective mathematical analysis operator using the received residual pressure wave output signal as an input for each respective mathematical analysis operator; comparing an output of each respective mathematical analysis operator to a respective predetermined output reference; deciding for each predetermined disturbance state whether the disturbance state is present, wherein it is decided that a corresponding disturbance state is present, if an output of a respective mathematical analysis operator corresponds to the respective predetermined output reference; and it is decided that a corresponding disturbance is not present, if an output of a respective mathematical analysis operator does not correspond to the respective predetermined output reference

Taal | Engels |
---|---|

Octrooinummer | EP3150380 |

IPC | B41J 2/ 14 A I |

Prioriteitsdatum | 9/12/15 |

Status | Gepubliceerd - 5 apr 2017 |

### Vingerafdruk

### Citeer dit

*EP3150380*.)

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*Method for accurate fault diagnosis in an inkjet print head*, Octrooi Nr. EP3150380, IPC-nummer B41J 2/ 14 A I.

**Method for accurate fault diagnosis in an inkjet print head.** / Khalate, Amol A. (Uitvinder); Khandelwal, Dhruv (Uitvinder); Weiland, Siep (Uitvinder).

Onderzoeksoutput: Octrooi › Octrooi-publicatie › Professioneel

TY - PAT

T1 - Method for accurate fault diagnosis in an inkjet print head

AU - Khalate, Amol A.

AU - Khandelwal, Dhruv

AU - Weiland, Siep

PY - 2017/4/5

Y1 - 2017/4/5

N2 - In a method for identifying of and distinguishing between at least two different predetermined disturbance states in an inkjet print head, the method comprises providing a disturbance identification input signal; applying the disturbance identification input signal to an actuator, the actuator being part of an ejection unit of an inkjet print head; receiving a residual pressure wave output signal; and analyzing the residual pressure wave output signal. The step of analyzing comprises designing and providing a respective mathematical analysis operator for each identifiable disturbance state; executing each respective mathematical analysis operator using the received residual pressure wave output signal as an input for each respective mathematical analysis operator; comparing an output of each respective mathematical analysis operator to a respective predetermined output reference; deciding for each predetermined disturbance state whether the disturbance state is present, wherein it is decided that a corresponding disturbance state is present, if an output of a respective mathematical analysis operator corresponds to the respective predetermined output reference; and it is decided that a corresponding disturbance is not present, if an output of a respective mathematical analysis operator does not correspond to the respective predetermined output reference

AB - In a method for identifying of and distinguishing between at least two different predetermined disturbance states in an inkjet print head, the method comprises providing a disturbance identification input signal; applying the disturbance identification input signal to an actuator, the actuator being part of an ejection unit of an inkjet print head; receiving a residual pressure wave output signal; and analyzing the residual pressure wave output signal. The step of analyzing comprises designing and providing a respective mathematical analysis operator for each identifiable disturbance state; executing each respective mathematical analysis operator using the received residual pressure wave output signal as an input for each respective mathematical analysis operator; comparing an output of each respective mathematical analysis operator to a respective predetermined output reference; deciding for each predetermined disturbance state whether the disturbance state is present, wherein it is decided that a corresponding disturbance state is present, if an output of a respective mathematical analysis operator corresponds to the respective predetermined output reference; and it is decided that a corresponding disturbance is not present, if an output of a respective mathematical analysis operator does not correspond to the respective predetermined output reference

M3 - Patent publication

M1 - EP3150380

ER -