公开(公告)号：US20230297797A1

公开(公告)日：2023-09-21

申请号：US18018763

申请日：2021-01-22

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kiyoun LEE ,  Kimin KANG ,  Yousun BANG

IPC: G06K15/02 ,  G06K15/00 ,  G03G15/00

CPC classification number: G06K15/027 ,  G06K15/002 ,  G06K15/1881 ,  G03G15/5016

Abstract: An example operation method of an image forming apparatus includes forming a test image with respect to a pattern used for diagnosing an image-quality state of a printout output by the image forming apparatus, obtaining a test signal corresponding to the test image via a sensor of the image forming apparatus, obtaining image-quality state information indicating an image-quality state of the test image based on the test signal corresponding, identifying a type of a screen corresponding to halftone information indicating a resolution of the printout based on the image-quality state information, and performing a first image forming operation according to the type of the screen.