NOZZLE FAILURE PREDICTION AND OBJECT QUALITY DETERMINATION
Example implementations relate to determining and correcting for nozzle failure in printheads used for printing objects. One example implementation receives object data for printing an object and predicts a nozzle failure of a nozzle in the printhead which corresponds with a print location of the object. A print quality parameter of the object to be printed without using the nozzle is determined.
1 . A method comprising:
providing object data for printing an object with a printhead;
predicting a nozzle failure of a nozzle in the printhead which corresponds with a print location of the object; and
determining a print quality parameter of the object to be printed without using the nozzle.
2 . The method of claim 1 , further comprising performing a corrective action in response to determining that the print quality parameter is below a quality threshold.
3 . The method of claim 2 , wherein the corrective action is at least one of the following: change the print location of the object; maintenance procedure; user notification; and use of a redundant nozzle.
4 . The method of claim 2 , wherein the quality threshold is set by a user.
5 . The method of to claim 1 , wherein predicting a nozzle failure comprises using drop detection for said nozzle.
6 . The method of claim 5 , wherein predicting a nozzle failure comprises using current and historical results from the drop detection for said nozzle.
7 . The method of claim 1 , wherein predicting a nozzle failure is dependent on the location of the nozzle within the printhead.
8 . The method of claim 1 , further comprising predicting a nozzle failure in a second nozzle in a second printhead and using said prediction to determine the print quality parameter,
9 . A printing apparatus comprising:
a printhead;
a processor;
a storage medium storing instructions, that, when executed by the processor, cause the processor to:
use object data to determine printing area coordinates for printing an object using the printhead;
determine a nozzle failure likelihood for a nozzle in the printhead corresponding to the printing area coordinates of the object; and
determine an object quality parameter of the object based on failure of the nozzle.
10 . The printing apparatus of claim 9 , wherein the processor is to perform a corrective action in response to determining that the object quality parameter is below a quality threshold and the nozzle failure likelihood is above a failure threshold.
11 . The printing apparatus of claim 10 , wherein the corrective action is at least one of the following: change the print location of the object; maintenance procedure; user notification; and use another nozzle.
12 . The printing apparatus of claim 9 , wherein the processor is to use drop detection data for the nozzle to determine the nozzle failure likelihood, the drop detection data comprising a plurality of drop detection results for the nozzle.
13 . The printing apparatus of claim 9 , further comprising a second printhead, the processor to determine a nozzle failure likelihood of a second nozzle in the second printhead corresponding to the printing area coordinates of the first nozzle.
14 . The printing apparatus of claim 13 , wherein the processor is to perform a corrective action in response to determining that the object quality parameter is below a quality threshold and the nozzle failure likelihood of the first and second nozzle is above a failure threshold.
15 . A non-transitory computer-readable storage medium comprising a set of computer-readable instructions that, when executed by a processor, cause the processor to:
receive object data for printing an object;
predict a nozzle failure of a nozzle in the printhead which corresponds with a print location of the object; and
determine a print quality parameter of the object to be printed without using the nozzle.