Spool plug什麼意思

"Spool plug" is a term used in the context of printing and refers to a component in some types of printers, particularly older models, that serves as a filter for the ink or toner supply. The spool plug is located in the ink reservoir or toner cartridge and helps to regulate the flow of ink or toner to the printhead.

The term "spool" is derived from the concept of a spindle or reel that holds a length of material, such as thread or tape, and the "plug" refers to the fact that it blocks the flow of ink or toner except through a specific channel. The spool plug's primary function is to prevent air from entering the ink supply system, which could cause ink to dry out or become contaminated.

In modern printers, the concept of a spool plug has been largely replaced by more advanced ink delivery systems that use valves, membranes, or other mechanisms to control ink flow. However, the term may still be used in the context of repairing or maintaining older printer models that use this component.