IMAGE READING APPARATUS, IMAGE READING METHOD, AND SHEET PROCESSING APPARATUS
First Claim
Patent Images
1. An image reading apparatus comprising:
- an illuminating unit configured to illuminate sheets being transported, one after another;
a sensor having an imaging elements arranged in a line and configured to photograph the sheets one after another;
a background member having a white-reference part provided in a part of a photographing region of the sensor and a black-reference part configured to guide light reflected by the illuminating unit to the sensor when a sheet lies in the photographing region of the sensor, and to restrict application of the light reflected by the illuminating unit to the sensor when no sheets lie in the photographing region of the sensor.
1 Assignment
0 Petitions
Accused Products
Abstract
An image reading apparatus, in which sheets being transported are illuminated by an illuminating unit, one after another, and a sensor having an imaging elements arranged in a line photographs the sheets, one after another. A white-reference part is provided in a part of the photographing region of the sensor. A black-reference part guides the light reflected by the illuminating unit to the sensor when a sheet lies in the photographing region of the sensor, and to restrict application of the light reflected by the illuminating unit to the sensor when no sheets lie in the photographing region of the sensor.
-
Citations
10 Claims
-
1. An image reading apparatus comprising:
-
an illuminating unit configured to illuminate sheets being transported, one after another; a sensor having an imaging elements arranged in a line and configured to photograph the sheets one after another; a background member having a white-reference part provided in a part of a photographing region of the sensor and a black-reference part configured to guide light reflected by the illuminating unit to the sensor when a sheet lies in the photographing region of the sensor, and to restrict application of the light reflected by the illuminating unit to the sensor when no sheets lie in the photographing region of the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An image reading method comprising:
-
Illuminating sheets being transported, one after another; photographing the sheets one after another, by a sensor having an imaging elements arranged in a line; providing a white-reference part provided in a part of a photographing region; and providing a black-reference part configured to guide light reflected by an illuminating unit to the sensor when a sheet lies in the photographing region of the sensor, and to restrict application of the light reflected by the illuminating unit to the sensor when no sheets lie in the photographing region of the sensor.
-
-
10. A sheet processing apparatus comprising:
-
a receiving unit configured to receive sheets; a feeding unit configured to feed the sheets, one by one, from the receiving unit; a transporting unit configured to transport the sheets from the feeding unit; an illuminating unit configured to illuminate the sheets being transported by the transporting unit; a sensor having an imaging elements arranged in a line and configured to photograph the sheets being transported by the transporting unit, one after another; a background member having a white-reference part provided in a part of a photographing region of the sensor and a black-reference part configured to guide light reflected by the illuminating unit to the sensor when a sheet lies in the photographing region of the sensor, and to restrict application of the light reflected by the illuminating unit to the sensor when no sheets lie in the photographing region of the sensor; a discriminating unit configured to determine the type of each sheet from the image of the sheet, which the sensor has read; and a control unit configured to perform a control, thereby to collect the sheets in collecting bins, in accordance with the types of the sheets, which discriminating unit has determined.
-
Specification