US 11,943,406 B2
Methods, apparatuses, and systems for detecting printing defects and contaminated components of a printer
Sebastien d'Armancourt, Singapore (SG); Thomas Axel Jonas Celinder, Singapore (SG); H Sprague Ackley, Seattle, WA (US); and Glenn David Aspenns, Cincinnati, OH (US)
Assigned to Hand Held Products, Inc., Charlotte, NC (US)
Filed by Hand Held Products, Inc., Charlotte, NC (US)
Filed on Dec. 23, 2022, as Appl. No. 18/146,201.
Application 18/146,201 is a continuation of application No. 17/301,259, filed on Mar. 30, 2021, granted, now 11,570,321.
Application 17/301,259 is a continuation of application No. 16/790,417, filed on Feb. 13, 2020, granted, now 10,999,460, issued on May 4, 2021.
Application 16/790,417 is a continuation of application No. 16/240,140, filed on Jan. 4, 2019, granted, now 10,834,283, issued on Nov. 10, 2020.
Claims priority of provisional application 62/614,089, filed on Jan. 5, 2018.
Prior Publication US 2023/0125920 A1, Apr. 27, 2023
Int. Cl. H04N 1/00 (2006.01); G06K 5/02 (2006.01); G06T 7/00 (2017.01); G06T 7/254 (2017.01)
CPC H04N 1/00737 (2013.01) [G06K 5/02 (2013.01); G06T 7/0002 (2013.01); G06T 7/001 (2013.01); G06T 7/254 (2017.01); H04N 1/00005 (2013.01); H04N 1/00015 (2013.01); H04N 1/00029 (2013.01); H04N 1/00037 (2013.01); H04N 1/00039 (2013.01); H04N 1/00045 (2013.01); H04N 1/00082 (2013.01); G06T 2207/30144 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
capturing an image of printed content;
generating a difference image based on a comparison of the captured image of the printed content and a reference image, wherein the reference image correlates to the printed content;
analyzing the difference image to identify at least one bright point, wherein the at least one bright point corresponds to at least one defect in the printed content; and
determining at least one cause for the at least one defect in the printed content based on at least one parameter associated with the at least one bright point, wherein the at least one cause for the at least one defect in the printed content comprises ribbon wrinkle, wherein the at least one cause for the at least one defect in the printed content is determined based on whether the at least one bright point lies on a line.