NOZZLE-CLOGGING DETERMINING DEVICE

摘要

A nozzle-clogging determining device is provided for detecting nozzle clogging without causing an increase in the cost. A nozzle-clogging determining device is configured to detect pass of droplets ejected from a plurality of nozzles of a head of an inkjet printer, and includes a droplet detector and a determination controller. The droplet detector includes a light emitter configured to emit detection light for detecting pass of droplets in a direction intersecting with a traveling direction of droplets, and a light receiver configured to receive the detection light. The determination controller consecutively ejects a plurality of droplets from each nozzle of the head at equal intervals, and has a threshold for performing determination on nozzle clogging on the basis of a light interception rate of the detection light which the light receiver receives when droplets are positioned inside a spot of the detection light which the light receiver receives.

主权项

1. A nozzle-clogging determining device configured to detect pass of a plurality of droplets ejected from nozzles of a head of an inkjet printer, thereby performing determination on clogging of the nozzles, and the nozzle-clogging determining device comprising:
a droplet detector, including:
a light emitter, configured to emit detection light for detecting pass of the droplets in a direction intersecting with a traveling direction of the droplets; anda light receiver, configured to receive the detection light, wherein the light emitter, a passage of the droplets and the light receiver are disposed along a light path of the detection light; and a determination controller, configured to eject a plurality of droplets from the nozzles of the head, and perform determination on nozzle clogging on the basis of a light interception rate of the detection light which the light receiver receives when the droplets are positioned inside a spot of the detection light which the light receiver receives.