| 摘要 |
A scanner, which can be a USB host, includes a hub, a scanner component, a virtual printer component and an internal host. The hub is connected to a computer host and the scanner. The scanner component stores the basic setting data of the scanner, while the virtual printer component stores the basic setting data of a printer, and both the scanner component and the virtual printer component are connected to the hub. The internal host is respectively connected to the scanner component, the virtual printer component and the printer. With the virtual printer component and the internal host, the scanner can be the USB host, which directly controls the printer to print.
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