Image processing apparatus and image forming apparatus
AssigneeSharp Kabushiki Kaisha
InventorTakashi KUROKAWA
Life of this patent
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Abstract
An image processing apparatus includes an automatic document feeder for conveying a document to pass through an image reading position for discharging, and a main body portion for irradiating the document with light at the image reading position and receiving reflection light of the irradiated light to read an image of the document, in which the automatic document feeder is provided so as to be able to be opened and closed with respect to the main body portion. The image processing apparatus, while the automatic document feeder conveys a document, irradiates a white plate with light in the absence of the document at the image reading position to read an image thereof and analyzes the read image of the white plate so as to detect opening and closing of the automatic document feeder.
Claims5
An image processing apparatus including an automatic document feeder for conveying a document to pass through a predetermined image reading position and discharge to a predetermined discharge portion, a main body portion for irradiating the document with light at the image reading position and receiving reflection light of the irradiated light to read an image of the document, and a control portion for controlling processing for conveying the document and reading the image, in which the automatic document feeder is provided so as to be able to be opened and closed with respect to the main body portion, and in a state where the automatic document feeder is closed, the document passing through the image reading position is in close contact with the main body portion, wherein
- the automatic document feeder has a white plate at a position where light is irradiated from the main body portion in the closed state, and
- while the automatic document feeder conveys the document, the control portion irradiates the white plate with light in the absence of the document at the image reading position to read an image of the white plate and analyze the read image of the white plate so as to detect opening and closing of the automatic document feeder.
Dependencies are inferred from the claim text.