US 12,304,220 B2
Defect inspection device, defect inspection method, and program, and printing device and method of manufacturing printed matter
Masaki Seki, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Dec. 12, 2022, as Appl. No. 18/064,544.
Application 18/064,544 is a continuation of application No. PCT/JP2021/022233, filed on Jun. 11, 2021.
Claims priority of application No. 2020-106155 (JP), filed on Jun. 19, 2020.
Prior Publication US 2023/0103391 A1, Apr. 6, 2023
Int. Cl. B41J 2/21 (2006.01); G01N 21/892 (2006.01)
CPC B41J 2/2142 (2013.01) [B41J 2/2139 (2013.01); B41J 2/2146 (2013.01); G01N 21/892 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A defect inspection device that inspects a defect of a printed matter printed on the basis of reference data by a single-pass type printing device that includes an inkjet head having a plurality of nozzles disposed in a nozzle direction and a moving mechanism configured to move the inkjet head and a print medium relative to each other in a relative movement direction intersecting with the nozzle direction, the defect inspection device comprising:
a memory configured to store a command to be executed by one or more processors; and
the one or more processors being configured to execute the command stored in the memory,
wherein the one or more processors are configured to:
acquire the reference data and imaging data based on a captured image in which the printed matter is imaged;
acquire nozzle mapping information indicating a correspondence relationship between positions of the plurality of nozzles and pixel positions of the imaging data in the nozzle direction;
perform a nozzle direction registration process of performing registration between the imaging data and the reference data in the nozzle direction by using the nozzle mapping information; and
perform a defect inspection process of calculating defect information in response to an input of the imaging data and the reference data after performing the nozzle direction registration process.