Printing apparatus, method for controlling printing apparatus, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorKeisuke Ujiie
Life of this patent
Estimating the term…
Abstract
A printing apparatus includes a selection unit configured to select a predetermined number of nozzles from nozzles of a printhead including a plurality of nozzles configured to discharge a liquid droplet; and a detection unit configured to detect a discharge state of a liquid droplet by using the predetermined number of nozzles being selected. The selection unit selects the predetermined number of nozzles such that a nozzle having a discharge abnormality is not included in the predetermined number of nozzles.
Claims13
A printing apparatus comprising:
- a selection unit configured to select a predetermined number of nozzles from nozzles of a printhead including a plurality of nozzles configured to discharge a liquid droplet;
- and
- a detection unit configured to detect a discharge state of a liquid droplet by using the predetermined number of nozzles being selected, wherein
- the selection unit selects the predetermined number of nozzles such that a nozzle having a discharge abnormality is not included in the predetermined number of nozzles,
- the selection unit selects the predetermined number of nozzles from nozzle groups having a same drive timing among the nozzles of the printhead, and
- when the predetermined number of nozzles being selected include a nozzle having a discharge abnormality, the selection unit replaces the nozzle having the discharge abnormality with a normal nozzle in the nozzle group from which the predetermined number of nozzles are selected.
A method of controlling a printing apparatus, the method comprising:
- selecting a predetermined number of nozzles from nozzles of a printhead including a plurality of nozzles configured to discharge a liquid droplet;
- and
- detecting a discharge state of a liquid droplet by using the predetermined number of nozzles being selected, wherein
- the selecting selects the predetermined number of nozzles such that a nozzle having a discharge abnormality is not included in the predetermined number of nozzles,
- in the selecting, the predetermined number of nozzles are selected from nozzle groups having a same drive timing among the nozzles of the printhead, and
- when the predetermined number of nozzles being selected include a nozzle having a discharge abnormality, the nozzle having the discharge abnormality is replaced with a normal nozzle in the nozzle group from which the predetermined number of nozzles are selected.
A non-transitory computer-readable storage medium storing a program for causing a computer to execute a method of controlling a printing apparatus, the method comprising:
- selecting a predetermined number of nozzles from nozzles of a printhead including a plurality of nozzles configured to discharge a liquid droplet;
- and
- detecting a discharge state of a liquid droplet by using the predetermined number of nozzles being selected, wherein
- the selecting selects the predetermined number of nozzles such that a nozzle having a discharge abnormality is not included in the predetermined number of nozzles,
- in the selecting, the predetermined number of nozzles are selected from nozzle groups having a same drive timing among the nozzles of the printhead, and
- when the predetermined number of nozzles being selected include a nozzle having a discharge abnormality, the nozzle having the discharge abnormality is replaced with a normal nozzle in the nozzle group from which the predetermined number of nozzles are selected.
Dependencies are inferred from the claim text.