Patent ID: 11919317
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 10:
11. An inkjet printing apparatus comprising:
an inkjet head which ejects ink in which a plurality of particles is dispersed;
a first light irradiation device and a second light irradiation device which irradiate lights of different wavelength bands, respectively, to the ejected ink;
a first sensing device on which a first exit light is incident, wherein the first exit light is obtained by scattering a first light irradiated from the first light irradiation device and incident on the ink;
a second sensing device on which a second exit light is incident, wherein the second exit light is obtained by scattering a second light irradiated from the second light irradiation device and incident on the ink; and
a processor to which data on the first exit light and the second exit light incident on the first sensing device and the second sensing device, respectively, are inputted,
wherein the first light irradiated from the first light irradiation device has a wavelength of about 500 nm or less, and the second light irradiated from the second light irradiation device has a wavelength of about 1000 nm or more.