The OPC（Organic Photoconductor）is the photosensitive drum, which is the core component of the laser printer. It is generally not sticky with toner. If there is toner on the drum core, it should be cleaned in time. The possible reasons why the drum core is sticky with toner are:

1. There are sticky substances such as grease on the drum core: wipe the OPC（Organic Photoconductor）with a clean soft cloth.

2. The toner is not added properly: Pay attention to the method when adding toner, and you can use printing paper to pad the toner cartridge mouth.

3. The toner quality is poor: Replace with high-quality toner.

4. The waste toner scraper is scratched or aged: Replace the corresponding accessories.

5. The drum core is damaged: Replace the corresponding accessories.