Paper feeding channel, application method and printer

The invention relates to a paper feeding channel, an application method and a printer, and relates to the technical field of printers, the paper feeding channel comprises a lower paper feeding channel and an upper paper feeding channel, the lower paper feeding channel communicates with the upper paper feeding channel through a bend, and the lower paper feeding channel and the upper paper feeding channel are oppositely arranged; the paper feeding device further comprises a blowing mechanism, and the blowing mechanism is used for blowing paper from the lower paper feeding channel to the upper paper feeding channel through the bent channel and blowing the paper out of the upper paper feeding channel. When paper comes out of the printer, the paper firstly enters the lower paper feeding channel, and the blowing mechanism conveys the paper from the lower paper feeding channel to the upper paper feeding channel through the curve and then blows the paper out of the upper paper feeding channel. In the process, the low