System for controlling curls of a paper
AssigneeRicoh Company, Ltd.
InventorsTatsuo Tani, Hiroshi Yokoyama, Shoji Hayashi, Takashi Murofushi
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Abstract
A curl control system applicable to an electrophotographic copier for sensing the conditions of curls of a paper being transported and correcting the curls includes a curl sensing device and a curl correcting device. Two distance sensor units illuminate the paper and receive a reflection from the paper to sense the amount and direction of curl of the paper. A paper size sensor is provided for sensing the size of the paper. The curl correcting device corrects the curls on the basis of the amount and direction of curl sensed. The curl correcting device may be implemented in the device in many fashions.
Claims62
A curl control system, for controlling curl of a paper which is applicable to an image forming apparatus, comprising:
- curl sensing means for sensing a curl of the paper;
- and
- curl correcting means for correcting the curl, sensed by said curl sensing means on the basis of the sensed conditions of any curl.
A curl system, for controlling curl of a paper which is applicable to an image forming apparatus, comprising:
- curl sensing means located downstream of a fixing means of the image forming apparatus for sensing an amount and a direction of curl of the paper;
- and
- paper transport control means for controlling transport of said paper along a paper transport path provided in the image forming apparatus under the sensed condition by any curl, without any correction of the curl.
Dependencies are inferred from the claim text.