JP3458078B2 - Digital color copier - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital color copying machine, and more particularly to a digital color copying machine having a forgery preventing function for bills, securities and the like.

[0002]

2. Description of the Related Art A digital color copying machine having a forgery preventing function for bills, securities, etc. has already been developed. As a copying machine of this type, there is a copying machine in which tracking information such as a machine number of the copying machine and a copying date and time is added to an output image in order to prevent forgery of bills, securities and the like (Japanese Patent Laid-Open No. 7-15).
4585). Note that the tracking information is added in a visually difficult-to-recognize state in order to reduce the influence on the output image as much as possible.

In such a copying machine, the machine number data of the copying machine is stored in a ROM or a rewritable nonvolatile memory, and when the tracking information is added, the machine number is read from the ROM or the rewritable nonvolatile memory. You need to read the data. That is, it is necessary to store the machine number data of the copying machine in the ROM or the rewritable nonvolatile memory.

However, in the copying machine in which the tracking information is stored in the ROM, by replacing the ROM,
There is a problem that the tracking information is tampered with. Further, in a copying machine in which tracking information is stored in a rewritable nonvolatile memory, there is a problem that the tracking information is falsified by rewriting the contents of the rewritable nonvolatile memory.

[0005]

SUMMARY OF THE INVENTION According to the present invention, when the ROM is replaced and the tracking information stored in the ROM is tampered with, the fact is detected and the copying operation is prohibited. An object of the present invention is to provide a digital color copying machine capable of performing the above.

[0006]

According to a first aspect of the present invention, there is provided a digital color copying machine including a ROM storing tracking information for preventing forgery and a tracking information for preventing forgery written therein.
Rewritable nonvolatile memory, when the power is turned on, R
A determination means for determining whether or not the tracking information stored in the OM and the tracking information stored in the non-volatile memory are coincident with each other. If the colors do not match, the digital color
On the copying machine, change the tracking information to prevent forgery from the above.
Tracking information to be written to a possible non-volatile memory.
It has a recording means, and the tracking information registration means stores the tracking information.
Tracking information input means to be input, preset nonvolatile memory
A predetermined key data is stored in the specified address.
Means to determine whether or not the
Pre-defined key data is stored at a specified address
If not, enter by tracking information input means
Stored trace information in non-volatile memory and
Predefined at a predetermined address in volatile memory
Means for storing key data and non-volatile memory
Predetermined key data at a predetermined address
If it is stored, enter it by the tracking information input means.
It is prohibited to store the input tracking information in the non-volatile memory.
It is characterized by having means for

In the digital color copying machine according to a second aspect of the present invention, the RO in which tracking information for preventing forgery is stored.
M, rewriting to write tracking information to prevent forgery
Possible non-volatile memory, stored in ROM when power is turned on
The tracking information stored in it and the additional information stored in the non-volatile memory.
Determination means for determining whether or not the trace information matches, and
If both trace information match, copy operation is enabled and both
If the tracking information does not match, copy operation is disabled
Digital color copiers equipped with means
The tracking information for preventing forgery can be rewritten as above.
Tracking information registration means for writing in a non-volatile memory
The tracking information registration means is to input the tracking information.
Predetermined tracking information input means and non-volatile memory
The predetermined key data is stored in the address
Means for determining whether or not there is a predetermined non-volatile memory
Predetermined key data is stored in the specified address
If it is, the additional information entered by the tracking information input means is added.
Means to prohibit storing trace information in non-volatile memory
Predefined at a predetermined address in volatile memory
If no key data is stored in the ROM, it is stored in the ROM.
Entered by tracking information and tracking information input means
Means for determining whether or not the traced information is matched, R
By the tracking information stored in the OM and the tracking information input means.
If the tracking information entered in
The nonvolatile information of the tracking information input by the information input means
Means to prohibit storage in memory and stored in ROM
The tracking information that has been entered and the tracking information input means
If there is a match with the tracking information
Therefore, the input tracking information is stored in the non-volatile memory.
Along with the preset address of the non-volatile memory
It is characterized in that it is provided with a means for storing predetermined key data .

In the digital color copying machine according to the third aspect of the present invention, encrypted data of tracking information for preventing forgery is stored.
ROM, trace information to prevent forgery is written
Rewritable non-volatile memory, R when power is turned on
Decoding the tracking information stored in the OM,
It is stored in the non-volatile memory with the tracking information obtained by
Determination means for determining whether or not the tracking information that matches
If both trace information match, the copy operation is enabled.
However, if both trace information do not match, copy operation is prohibited
To a digital color copier equipped with a means for
The tracking information for preventing forgery can be rewritten above.
Registration of trace information for writing to a non-volatile memory
The tracking information registration means inputs the tracking information.
Predetermined tracking information input means to be applied, non-volatile memory
Predetermined key data is stored at the specified address
Means of determining whether or not
A predetermined key data is stored in the specified address.
If not, it is entered by the tracking information input means.
Stored trace information in a non-volatile memory and
Predetermined to a predetermined address of the memory
Means to store key data and storage of non-volatile memory
Pre-defined key data is stored in the specified address
If paid, enter by tracking information input means
The stored tracking information in the non-volatile memory
Characterized in that it comprises a means.

In the digital color copying machine according to a fourth aspect of the present invention, encrypted data of tracking information for preventing forgery is stored.
ROM, trace information to prevent forgery is written
Rewritable non-volatile memory, R when power is turned on
Decoding the tracking information stored in the OM,
It is stored in the non-volatile memory with the tracking information obtained by
Determination means for determining whether or not the tracking information that matches
If both trace information match, the copy operation is enabled.
However, if both trace information do not match, copy operation is prohibited
To a digital color copier equipped with a means for
The tracking information for preventing forgery can be rewritten above.
Registration of trace information for writing to a non-volatile memory
The tracking information registration means inputs the tracking information.
Predetermined tracking information input means to be applied, non-volatile memory
Predetermined key data is stored at the specified address
Means of determining whether or not
A predetermined key data is stored in the specified address.
If it is, it is entered by the tracking information input means.
Hands that prohibit storing trace information in non-volatile memory
Stage, a predetermined address of the nonvolatile memory
If the encrypted key data is not stored, RO
The tracking information stored in M is decrypted and
The tracking information obtained by
Decoding means for deciding whether or not the traced information matches
By the tracking information and tracking information input means obtained by
If the tracking information entered in the
Non-volatile memo of tracking information input by the information input means
Retrieval means to prohibit storage in
Tracking information entered and entered by the tracking information input means
If the tracking information matches, the tracking information input means
When the tracking information input by
Both are stored in advance in a predetermined address of the nonvolatile memory.
It is characterized in that it is provided with a means for storing predetermined key data .

[0010]

[0011]

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

FIG. 1 shows a schematic structure of a digital color copying machine.

The digital color copying machine has a reading section 1 for optically reading an original image and converting it into an image signal, a recording section 2 for recording the read image signal on a recording sheet, an operation display provided with a display and operation keys. The main control unit 4 for controlling the unit 3 and each of these devices is provided.

The main control section 4 stores the program, machine number data (tracking information) and other data in the ROM 11,
A rewritable nonvolatile memory 12 for storing data such as machine number data (tracking information) and a RAM 13 for storing necessary data are provided.

[1] Description of First Embodiment

The machine number data of the copying machine is stored in the ROM 11 in advance. Then, in the production line of the copying machine, a specific manager stores the machine number data in the non-volatile memory 12 by inputting the machine number of the copying machine in the machine number registration mode.

FIG. 2 shows the processing procedure of the copying machine when the power is turned on.

When the power is turned on (step 1), the RO
Machine number data is read from M11 (step 2).
Further, the machine number data is read from the nonvolatile memory 12 ((step 3)).

Then, it is determined whether the machine number data read from the ROM 11 and the machine number data read from the non-volatile memory 12 match (step 4). If they match, the start of the copying machine is permitted (step 5). If they do not match, the copying machine is prohibited from starting and an error is displayed (step 6).

The ROM 11 may store data in which the machine number of the copying machine is encrypted. In this case, the processing procedure of the copying machine when the power is turned on is as shown in FIG.

That is, when the power is turned on (step 1), the encrypted data is read from the ROM 11 (step 12), and the read encrypted data is decrypted to obtain the machine number (step 13). Machine number data is read from the nonvolatile memory 12 ((step 14)).

Then, it is determined whether or not the machine number data obtained by the decryption and the machine number data read from the nonvolatile memory 12 match (step 1).
5). If they match, the copying machine start is permitted (step 16). If they do not match, the copying machine start is prohibited and an error is displayed (step 1).
7).

According to the above-described embodiment, when the machine number stored in the ROM is tampered with by exchanging the ROM, it is possible to detect the fact and prohibit the copying operation. Like

[2] Description of Second Embodiment

The machine number data of the copying machine is stored in the ROM 11 in advance. Then, in the production line of the copying machine, a specific manager stores the machine number data in the non-volatile memory 12 by inputting the machine number of the copying machine in the machine number registration mode.

In the second embodiment, in the machine number registration mode, it is determined whether or not the predetermined key data exists at the predetermined address of the non-volatile memory 12, and the key data is determined. The registration of the machine number data in the non-volatile memory 12 is permitted only when the number does not exist. Then, when the registration of the machine number data in the non-volatile memory 12 is permitted, the input machine number data is stored in the non-volatile memory 12 and is stored in advance in a predetermined address of the non-volatile memory 12. Store the key data.

FIG. 4 shows a machine number registration processing procedure for registering a machine number in the nonvolatile memory.

First, it is determined whether or not predetermined key data is stored in a predetermined address of the non-volatile memory 12 (step 21). If the key data is stored, the registration of the machine number is prohibited and an error is displayed (step 24).

If the key data is not stored,
When the machine number is entered and the machine number is entered (step 22), the entered machine number data is stored in the non-volatile memory 12 and the non-volatile memory 12 is stored.
The predetermined key data is stored in the predetermined address of (step 23). Then, the machine number registration process ends.

The processing procedure when the power of the copying machine is turned on in this case is the processing procedure described with reference to FIG.

The ROM 11 may store data in which the machine number of the copying machine is encrypted. In this case, the processing procedure of the copying machine when the power is turned on is the processing procedure described in FIG.

According to the above embodiment, the machine number stored in the non-volatile memory 12 is hard to be tampered with. Therefore, by replacing the ROM, the RO
It becomes possible to more reliably detect that the machine number stored in M has been tampered with.

[3] Description of Third Embodiment

By the way, the machine number is stored in the nonvolatile memory 12
When registering with, even a legitimate administrator may mistakenly enter the machine number. Therefore, during the machine number registration process, the entered machine number and ROM 11
It is also possible to determine whether or not the machine number data stored in No. 1 matches, and only when they match, the entered machine number may be stored in the non-volatile memory 12. The machine number registration processing procedure in this case is as shown in FIG.

First, it is determined whether or not predetermined key data is stored in a predetermined address of the non-volatile memory 12 (step 31). If the key data is stored, the registration of the machine number is prohibited and an error is displayed (step 38).

If no key data is stored,
When the machine number is input and the machine number is input (step 32), the machine number data is read from the ROM 11 (step 33). Then, it is determined whether the machine number data input in step 32 and the machine number data read from the ROM 11 match (step 34). If they match, the input machine number data is stored in the non-volatile memory 12 and the predetermined key data is stored in a predetermined address of the non-volatile memory 12 (step 37). And
The machine number registration process ends.

In step 34, step 32
When it is determined that the machine number data input in step S1 and the machine number data read from the ROM 11 do not match, the count value K for counting the number of mismatches is incremented by 1 (step 35), and the count value K becomes It is determined whether it is 2 or less (step 36). Count value K
If is less than or equal to 2, the process returns to step 32 and waits for the machine number to be input. In this case, a guide message for re-entering the machine number is displayed.

When the non-coincidence is detected three times, the determination in step 36 is NO, so the registration of the machine number is prohibited and an error is displayed (step 38).

The processing procedure when the power of the copying machine is turned on in this case is the processing procedure described in FIG.

The ROM 11 may store data in which the machine number of the copying machine is encrypted. R
When the machine number encrypted data is stored in the OM 11, it is necessary to read the machine number encrypted data from the ROM 11 and decrypt the read encrypted data to obtain the machine number data in step 33. .

The processing procedure of the copying machine when the power is turned on when the encrypted data of the machine number is stored in the ROM 11 is the processing procedure described in FIG.

[0043]

According to the present invention, by exchanging the ROM, the copying operation can be prohibited when the tracking information stored in the ROM is tampered with.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a digital color copying machine.

FIG. 2 is a flowchart showing a processing procedure of the copying machine when the power is turned on.

FIG. 3 is a flowchart showing a processing procedure of the copying machine when the power is turned on when the encrypted data of the machine number is stored in the ROM.

FIG. 4 is a flowchart showing a machine number registration processing procedure for registering a machine number in a nonvolatile memory.

FIG. 5 is a flowchart showing another example of a machine number registration processing procedure.

[Explanation of symbols]

1 Reader 2 recording section 3 Operation display section 4 Main control unit 11 ROM 12 Non-volatile memory 13 RAM

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G03G 21/00 560-578 G03G 15/00 303 G03G 21/00 370-540 G03G 21/14 B41J 29/00 -29/70 H04N 1/00-1/00 108

Claims (4)

(57) [Claims] 1. A ROM in which tracking information for preventing forgery is stored, a rewritable nonvolatile memory in which tracking information for preventing forgery is written, and a ROM when power is turned on.
Determination means for determining whether or not the trace information stored in the trace information and the trace information stored in the non-volatile memory match, and when both trace information match, the copying operation permission state is set, and both trace information are in the digital color copying machine which is provided with a hand stage for the copying operation prohibited state when they do not match, the tracking information for forgery prevention, the recombinant non-volatile
Equipped with tracking information registration means for writing to memory
The tracking information registration means
Means, a predetermined address of the non-volatile memory
To determine whether the stored key data is stored
A predetermined address of the non-volatile memory.
Tracking information if stored key data is not stored
Non-volatile memory for tracking information input by the input means
Stored in the non-volatile memory and stored in
A means for storing predetermined key data in the dress,
And a predetermined address in the non-volatile memory.
If the stored key data is stored, the tracking information
Non-volatile memo of tracking information input by the information input means
A digital color copying machine, characterized in that it is provided with means for prohibiting storage in the memory. 2. Tracking information for preventing forgery is stored
ROM, trace information to prevent forgery is written
Rewritable nonvolatile memory, ROM when power is turned on
Tracking information stored in and stored in non-volatile memory
Judgment hand to judge whether or not the tracking information is
Copy operation permission when the column and both trace information match
State, and if both trace information do not match, copy operation
Digital color copying with means to disable
In the machine, the trace information for preventing counterfeit
Equipped with tracking information registration means for writing to the memory
The tracking information registration means allows the tracking information to be entered.
Means, a predetermined address of the non-volatile memory
To determine whether the stored key data is stored
A predetermined address of the non-volatile memory.
If the key data stored in the
To the non-volatile memory of the tracking information input by the force means
Means for prohibiting the storage of data in the nonvolatile memory.
If the stored key data is not stored in the ROM,
Entered by the tracking information stored and the tracking information input means.
The means for determining whether or not the traced information applied matches the traced information stored in the ROM and the traced information input means.
Therefore, if the entered tracking information does not match,
Non-volatility of trace information input by trace information input means
Means for prohibiting storage in memory and storage in ROM
The tracking information that has been entered and the tracking information input means.
Tracking information input means
Store the tracking information entered by the non-volatile memory
In addition to the predetermined address of the non-volatile memory
A digital color copying machine , characterized by comprising means for storing predetermined key data . 3. Tracking information encryption data for preventing forgery
ROM that stores data, tracking information to prevent forgery
Rewritable non-volatile memory,
Upon entering, decrypt the tracking information stored in ROM,
The tracking information obtained by the decryption and the non-volatile memory are stored.
Judgment to determine whether or not the trace information that has been received matches
Copying operation is allowed when the matching means and both tracking information match.
When enabled, copy if both tracking information do not match
Digital color with means to disable
In a copying machine, the tracking information for preventing forgery is rewritable and non-volatile.
Equipped with tracking information registration means for writing to the memory
The tracking information registration means allows the tracking information to be entered.
Means, a predetermined address of the non-volatile memory
To determine whether the stored key data is stored
A predetermined address of the non-volatile memory.
Tracking information if stored key data is not stored
Non-volatile memory for tracking information input by the input means
Stored in the non-volatile memory and stored in
A means for storing predetermined key data in the dress,
And a predetermined address in the non-volatile memory.
If the stored key data is stored, the tracking information
Non-volatile memo of tracking information input by the information input means
A digital color copying machine characterized by being provided with means for prohibiting storage in the memory. 4. An encrypted data of tracking information for preventing forgery.
ROM that stores data, tracking information to prevent forgery
Rewritable non-volatile memory,
Upon entering, decrypt the tracking information stored in ROM,
The tracking information obtained by the decryption and the non-volatile memory are stored.
Judgment to determine whether or not the trace information that has been received matches
Copying operation is allowed when the matching means and both tracking information match.
When enabled, copy if both tracking information do not match
Digital color with means to disable
In a copying machine, the tracking information for preventing forgery is rewritable and non-volatile.
Equipped with tracking information registration means for writing to the memory
The tracking information registration means allows the tracking information to be entered.
Means, a predetermined address of the non-volatile memory
To determine whether the stored key data is stored
A predetermined address of the non-volatile memory.
If the key data stored in the
To the non-volatile memory of the tracking information input by the force means
Means for prohibiting the storage of data in the nonvolatile memory.
If the stored key data is not stored in the ROM,
Decrypt the stored tracking information and obtain it by decryption
Tracking information entered and entered by the tracking information input means
The tracking information obtained by decoding and the tracking information inputting means
Therefore, if the entered tracking information does not match,
Non-volatility of trace information input by trace information input means
By means of prohibiting storage in memory, and by decryption
The tracking information obtained by
Tracking information input means
Store the tracking information entered by the non-volatile memory
In addition to the predetermined address of the non-volatile memory
A digital color copying machine , characterized by comprising means for storing predetermined key data .