摘要:
Provided is an ink detecting module (100) that detects the discharge state of a liquid droplet by receiving a light beam emitted to a flying path of the liquid droplet discharged from a nozzle row (103) of an inkjet printer, the ink detecting module including: a light emitting unit (104) that emits a light beam; a light receiving unit (105) that receives the emitted light beam; and a module base (108) that integrally supports the light emitting unit (104) and the light receiving unit (105), the module base (108) including: positioning pins (106, 107) that are engaged with the inkjet printer and determine the fastening position in the inkjet printer; and a fastening unit that is fastened to the inkjet printer, in which, in the state of being fastened to the inkjet printer, only the positioning pins (106, 107) and the fastening unit are in contact with the inkjet printer.
摘要:
Provided is an ink detecting module (100) that detects the discharge state of a liquid droplet by receiving a light beam emitted to a flying path of the liquid droplet discharged from a nozzle row (103) of an inkjet printer, the ink detecting module including: a light emitting unit (104) that emits a light beam; a light receiving unit (105) that receives the emitted light beam; and a module base (108) that integrally supports the light emitting unit (104) and the light receiving unit (105), the module base (108) including: positioning pins (106, 107) that are engaged with the inkjet printer and determine the fastening position in the inkjet printer; and a fastening unit that is fastened to the inkjet printer, in which, in the state of being fastened to the inkjet printer, only the positioning pins (106, 107) and the fastening unit are in contact with the inkjet printer.
摘要:
After a light emitting element holder is rotated, it is detected from the output value of a position adjusting light receiving element that a light beam formed by light emitted from a light emitting element is incident on a positioning target provided in a light emitting element. The light emitting element holder is duly fixed to a base member. When the incidence of the light beam on the positioning target is not detected from the output value of the position adjusting light receiving element even though the light emitting element holder is rotated, a light receiving element holder is made to slide for height adjustment and the light emitting element holder is rotated again. The adjustment of the height of the light receiving element holder and the adjustment of the rotation of the light emitting element holder are repeated until the light beam is incident on the positioning target.
摘要:
A light-emitting element emits a beam onto a droplet discharged from a nozzle. A light-receiving element receives a scattered light generated by scattering of the beam by the droplet. A discharge-speed controller controls a speed of discharge of the droplet from the nozzle to be set at the speed outside a normal discharge-speed range that is determined depending on a viscosity of a liquid. Finally, a failure detecting unit detects a liquid discharge failure from data of the scattered light received by the light-receiving element.
摘要:
An ink-droplet detecting unit detects a spray state of an ink droplet sprayed from an ink-droplet spray head. The ink-droplet detecting unit includes a light-emitting element, a light-emitting element holder, a light-receiving element, a light-receiving element holder, and a base member. The light-emitting element holder is attached to the base member in a rotatable manner. The light-receiving element holder is attached to the base member in a slidable manner in a direction perpendicular to a rotation direction of the light-emitting element holder. The ink-droplet detecting unit is attached to a main body of the inkjet recording apparatus.
摘要:
A liquid-discharge-failure detecting apparatus includes a light-emitting element and a light-receiving element. The light-emitting element emits a laser beam in a direction that intersects with a direction in which a droplet of liquid is discharged. The beam is elliptical in cross section. The light-receiving element receives a scattered light generated by scattering of the laser beam by the droplet. The light-receiving element is externally adjacent to a circumference of the beam at a position where a beam diameter of the beam is small.
摘要:
A light-emitting element emits a beam onto a droplet discharged from a nozzle from a direction opposite to a direction of discharge of the droplet. A light-receiving element receives a scattered light generated by scattering of the beam by the droplet. Finally, a failure detecting unit detects a liquid discharge failure from data of the scattered light received by the light-receiving element.
摘要:
A liquid-discharge-failure detecting apparatus includes a light-emitting unit, a light-receiving unit, and a light-trapping unit. The light-emitting unit emits a detection beam. The light-receiving unit is located at a position offset from an optical axis of the detection beam, and receives a scattered light generated by scattering of the detection beam by a droplet of ink (liquid). The light-trapping unit traps a detection beam that travels straight without striking the droplet so that the detection beam does not enter the light-receiving unit as a stray light.
摘要:
A liquid-discharge-failure detecting apparatus includes a light-emitting unit, a light-receiving unit, and a light-trapping unit. The light-emitting unit emits a detection beam. The light-receiving unit is located at a position offset from an optical axis of the detection beam, and receives a scattered light generated by scattering of the detection beam by a droplet of ink (liquid). The light-trapping unit traps a detection beam that travels straight without striking the droplet so that the detection beam does not enter the light-receiving unit as a stray light.
摘要:
A liquid-discharge-failure detecting apparatus detects a liquid discharge failure. A light-emitting element emits a beam onto a droplet of liquid discharged from a liquid-droplet-discharge surface with an optical axis of the beam making a right angle with a direction in which the droplet is discharged. A light-receiving element receives a scattered light generated by scattering of the beam by the droplet. A failure detecting unit detects the liquid discharge failure from data of the scattered light received by the light-receiving element. A distance changing unit changes a distance between the liquid-droplet-discharge surface and the optical axis of the beam based on, for example, a diameter of the droplet.