Medium feeding unit and image forming apparatus having the same

Details Medium feeding unit and image forming apparatus having the same Medium feeding unit and image forming apparatus having the same

2011-07-05

2011-07-05

McCullough, Michael C (Department: 3653)

Sheet feeding or delivering

Feeding

Pack holders

Reexamination Certificate

active

07971870

ABSTRACT:
A medium feeding unit having an improved structure for sensing that the number of print media loaded onto a loading plate is equal to or exceeds a predetermined remaining number, and an image forming apparatus having the same. The medium feeding unit includes a sensor that outputs sensing signals having different voltages according to quantities of received light. The medium feeding unit also includes a plurality of actuators that sense the number of print media on a loading plate, differentially intercept the sensing area of the sensor thus changing the voltage level of the sensing signal, and therefore signal the medium feeding unit when the number of print media on the loading plate falls below the predetermined remaining number.

REFERENCES:
patent: 5480131 (1996-01-01), Furukawa et al.
patent: 6917766 (2005-07-01), Phillips et al.
patent: 7063315 (2006-06-01), Lyu et al.
patent: 1999-55944 (1999-07-01), None

Affiliated with

Also associated with

Rating

Medium feeding unit and image forming apparatus having the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Medium feeding unit and image forming apparatus having the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Medium feeding unit and image forming apparatus having the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2642446