Sheet material information-detecting apparatus

Details Sheet material information-detecting apparatus Sheet material information-detecting apparatus

2004-02-20

2008-09-09

Joerger, Kaitlin S (Department: 3653)

Sheet feeding or delivering

Feeding

By means to change direction of sheet travel

C347S043000, C271S226000

Reexamination Certificate

active

07422208

ABSTRACT:
A sheet material information-detecting apparatus is provided which is capable of detecting the type of a sheet material even if the sheet material is anisotropic. When recording paper sheet P is fed, feed rollers1aand1bare moved to narrow the nip of the rollers and front edge of recording paper sheet is pushed thereto to correct the oblique feed. Thereafter, external force is applied to recording paper sheet P by external force applying member2. A signal based on the external force is detected by signal detecting means3, and sheet material information-acquiring means5identify the type of the recording paper sheet. Owing to the oblique feed correction, the type of the sheet material can be identified precisely even if the sheet material is anisotropic.

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U.S. Appl. No. 10/536,912, filed May 27, 2005, T. Kawasaki et al.
U.S. Appl. No. 11/144,647, filed Jun. 6, 2005, N. Kankeo et al.

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