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What are the specific reasons why the drum and toner on a printer need to be replaced?

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The drum and toner in a printer need replacement due to various reasons. The drum, specifically the OPC drum, deteriorates over time due to continuous contact with paper, toner, and the doctor blade, leading to image quality degradation and eventual equipment failure, necessitating replacement . Additionally, a drum unit's service life can be signaled by detecting waste toner levels, prompting the need for replacement to maintain printing quality . In terms of toner replacement, a system controls toner attachment to the drum when replacement is deemed necessary, ensuring efficient operation and preventing blade-related issues . Furthermore, the fixing drum's rotation is automatically stopped when a receiver medium stoppage is detected, preventing toner overheating and ensuring proper fixing, highlighting the importance of timely drum and toner replacement in printer maintenance .

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Patent Toner-fixing drum containing heating liquid Alan Richard Priebe, Donald S. Rimai, Christopher J. White - Show less +2 more 01 May 2014 1 Citations	The drum and toner on a printer need replacement due to wear and depletion of toner, affecting print quality, as discussed in the paper on a toner-fixing drum with heating liquid.
Patent Image forming device and cleaning-blade replacement method Tsukamura Shinichi 28 Apr 2000 4 Citations	The drum and toner on a printer need replacement to prevent blade issues and reduce replacement time by controlling toner attachment based on device judgment of replacement necessity.
Patent Warning method for replacement period of drum unit in image forming device Zenzo Kawamori, Shigeo Koyama, Hiroshi Kusumoto, Hideki Matsumoto, Satoshi Uemori - Show less +4 more 11 Mar 1986	The drum unit needs replacement when waste toner reaches a specific level, triggering a signal to the CPU to alter paper feed, indicating the end of the drum unit's service life.
Patent Drum Maintenance System with Leak Detection Edward F. Burress 15 Feb 2011 2 Citations	The drum and toner on a printer may need replacement due to release agent detection triggering signal processing by a controller, altering printer operation in response to contact with the detector.
Journal Article•DOI Tribological Effects on the Wear Life of a Coating-Protected OPC Drum with Regard to Temperature, Load, and Rotation Speed May Grace Sesaldo, Il-Young Kim, Kyu Chul Han, Young-Ze Lee - Show less +3 more 15 Jul 2014-Tribology Transactions 1 Citations	The drum and toner on a printer need replacement due to wear from continuous contact with paper, toner, and doctor blade, leading to image quality deterioration and equipment failure.

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