Apparatus and method of detecting decoloration ink image
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorKazunobu TAKAHASHI
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Abstract
According to an embodiment, a detection apparatus for detecting a decoloration ink image includes an image reading unit, a decoloration unit, and a controller. The controller acquires image data using the image reading unit before decoloration that is the image data on the sheet before decoloration processing is executed by the decoloration unit. In addition, the controller determines whether or not there is a difference between the image data to be decolored and the decolored image data, thereby determining whether or not the decoloration ink is used in the sheet.
Claims14
-12. (canceled)
A detection apparatus for detecting a decolorable ink image, comprising:
- an image reading unit that generates image data by reading a sheet;
- a decoloration unit that performs a decoloration processing on the sheet so that a decolorable image formed with decolorable ink on the sheet is partially decolored forming a mixed pattern of decolored sections of the decolorable image and non-decolored sections of the decolorable image;
- and
- a controller that
- acquires a first image data generated by the image reading unit reading the sheet before the decoloration processing is executed by the decoloration unit,
- acquires a second image data generated by the image reading unit reading the sheet after the decoloration processing is executed by the decoloration unit,
- determines a difference between the first image data and the second image data, and
- determines whether or not the decolorable ink is used on the sheet based on the determined difference between the first image data and the second image data.
A method of detecting a decolorable ink image printed with decolorable ink, comprising:
- transferring a sheet to an image reading unit;
- generating first image data of a sheet before performing a decoloration processing;
- after the first image data is generated, performing the decoloration processing on the sheet so that a decolorable image formed with decolorable ink on the sheet is partially decolored forming a mixed pattern of decolored sections of the decolorable image and non-decolored sections of the decolorable image;
- returning the sheet on which the image is decolored to the image reading unit;
- generating second image data of the sheet after performing the decoloration processing;
- determining a difference between the first image data and the second image data;
- and
- determining whether or not the decolorable ink is used on the sheet based on the determined difference between the first image data and the second image data.
Dependencies are inferred from the claim text.