Imnadir, Imnadir, Rudi Z.A, Abdul Khair Junaidi, & M Dalil. " Placement Sensor Modification of Photo Interrupter and ATDC Sensor on the Minolta Bizhub-421 Photocopy Machine." Journal of Ocean, Mechanical and Aerospace -science and engineering- [Online], 67.2 (2023): 67-75. Web. 2 Oct. 2025