Method and device for determining fiber orientation of paper, and apparatus for removing image forming substance from paper

U.S. Patent Number: 5729349

Abstract: In an image forming apparatus, a device for removing an image forming substance from a paper or similar image holding medium senses the orientation of fibers constituting the paper. While a light beam is emitted obliquely toward the paper, the diffused distribution distribution of the resulting reflection is measured in order to determine the orientation of the fibers. A preselected relation is set up between the fibers and the direction of paper transport on the basis of the determined orientation. Further, a condition for applying an unstabilizing liquid to the paper and a condition for drying the paper are varied on the basis of the determined orientation.

Inventors: Tomita; Kan (Tokyo, JP), Sakuma; Nobuo (Tokyo, JP), Mama; Takashi (Yokohama, JP)

Assignee: Ricoh Company, Ltd. (Tokyo, JP)

Application Number: 08/596,860

Issued: 1998-03-17

Expired: 2006-03-17

Classes: 356/429 ; 162/4; 250/559.16

Field of search: 356/429,446 250/559.15,559.16,559.18 162/4

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