Patent ID: 11921459
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Chemical engineering (Chemistry)
Classification: CPC G  B  F  H | IPC B  F  G  H

Claim 12:
13. The imaging system according to claim 1, comprising:
a first air flow passage including the collection device which is a first collection device;
a second air flow passage including a second collection device; and
a switching device to selectively switch between the first air flow passage and the second air flow passage, to form a selected air flow passage which communicates an inside of the housing with an outside of the housing,
the switching device to switch to the second air flow passage, as the selected air flow passage, when the first air flow passage is set as the selected air flow passage and the collection performance of the first collection device is less than a threshold performance.