Title:
IMAGE READING DEVICE AND CONTROL METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2022/176718
Kind Code:
A1
Abstract:
An image reading device of the present invention is provided with: a manuscript table for mounting a manuscript; a platen that rotates between an open position for opening the manuscript table and a closed position for closing the same; a line sensor comprising an image capture element extending in a main scan direction, the line sensor reading the manuscript mounted on the manuscript table and outputting data; and a detecting sensor for detecting that the platen is in an intermediate position between the open position and the closed position. The image reading device determines the size of the manuscript on the basis of the data from the line sensor. The image reading device is characterized by comprising a computing unit which, when the detecting sensor detects that the platen is in the intermediate position, calculates second data from first data acquired by the line sensor and coefficient data, wherein the presence or absence of the manuscript is determined on the basis of third data acquired by the line sensor when the line sensor is in the closed position, and the second data.
Inventors:
IKEMIYA KEISUKE (JP)
HONDA NORIKAZU (JP)
HONDA NORIKAZU (JP)
Application Number:
PCT/JP2022/004989
Publication Date:
August 25, 2022
Filing Date:
February 09, 2022
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H04N1/04; G03B27/62; G03G15/00; G06T1/00
Foreign References:
| JP2017034392A | 2017-02-09 | |||
| JP2019161321A | 2019-09-19 | |||
| JP2006067329A | 2006-03-09 | |||
| JP2006067330A | 2006-03-09 | |||
| JP2004126132A | 2004-04-22 |
Attorney, Agent or Firm:
ABE Takuma et al. (JP)
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