논문 해외 국제전문학술지(SCI급) Minimization of mixed-color image noise caused by shape error of polygonal mirror in color-laser printing system
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2020-01
- 저자명 김완진,Choi, H (Choi, Hyun),Park, NC (Park, No-Cheol)
- 학술지명 MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
- 발행처명 SPRINGER HEIDELBERG
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 3
홈페이지논문 초록 (Abstract)
A color-laser printing system consisting of a tandem laser scanning unit uses four laser diodes and a single polygonal mirror (PM) to expose light onto four photo-conductive drums. In this study, we developed a method to reduce periodical image noise, which is mainly generated during scanning by shape errors in a PM, during color mixing of a color-laser scanning system. Through fundamental optical and image analyses, the horizontal dot shift induced by shape errors in the PM was expected to generate visible image noise with a period of 2.8 mm. In addition, the dominant cause of the horizontal dot shift was the peak-to-valley error and the pyramidal angle of each mirror. In order to reduce the periodical image noise (moire) in color mixing, a horizontal-synchronization detection-optics layout was proposed, and its effectiveness was verified through image-printing experiments.