Image forming apparatus
First Claim
1. An image forming apparatus including an acquisition unit for acquiring an image signal, and an image forming unit for forming an image based on the image signal acquired by said acquisition unit on a sheet having one or a plurality of memories, comprising:
- an encryption key creating unit for creating an encryption key when said acquisition unit acquires an image signal;
an encrypting unit for encrypting the image signal with the encryption key created by said encryption key creating unit; and
a writing unit for writing the encryption key into the memory, wherein said image forming unit forms an image based on the image signal encrypted by said encrypting unit on the sheet.
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Accused Products
Abstract
When an image signal is acquired, an encryption key is created, and the acquired image signal is encrypted with the created encryption key. An image based on the encrypted image signal is formed on a sheet having a memory, and the encryption key is written into the memory. The encrypted image formed on the sheet is read, and the encryption key is read from the memory. The image signal of the read encrypted image is decrypted with the read encryption key, and the original image based on the decrypted image signal is formed on a sheet.
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Citations
20 Claims
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1. An image forming apparatus including an acquisition unit for acquiring an image signal, and an image forming unit for forming an image based on the image signal acquired by said acquisition unit on a sheet having one or a plurality of memories, comprising:
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an encryption key creating unit for creating an encryption key when said acquisition unit acquires an image signal;
an encrypting unit for encrypting the image signal with the encryption key created by said encryption key creating unit; and
a writing unit for writing the encryption key into the memory, wherein said image forming unit forms an image based on the image signal encrypted by said encrypting unit on the sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An image forming apparatus including an image reading unit for reading an image formed on a sheet having one or a plurality of memories storing an encryption key, and an image forming unit for forming an image on a sheet, based on an image signal of the image read by said image reading unit, comprising:
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a memory reading unit for reading the encryption key from the memory when said image reading unit reads the image; and
a decrypting unit for decrypting the image signal of the image read by said image reading unit, with the encryption key read by said memory reading unit, wherein said image forming unit forms an image based on the image signal decrypted by said decrypting unit on a sheet. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification