JP3397843B2 - 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 specific mark on a document image.
You can play back images with
Copy operation may be different from normal operation
To a copier. [0002] 2. Description of the Related Art Generally, a copier uses a reading unit to read an original image.
Scan, and the scanned image data is almost the same as the scanning unit
Place on the copy paper by the writing unit at
Live. Also, Japanese Patent Application Laid-Open No. Sho 54-32322 discloses
Scans the original image, and
If a pattern is detected, the document is determined to be a top secret document
The copying machine that stops copying operation by
I have. [0003] In the above copying machine, the original
Is a confidential document and a specific pattern is
Stops the copying operation when an
It is difficult to add a specific pattern to
It is difficult. The present invention has been made to solve the above-mentioned drawbacks and to provide a specific pattern.
Copy that can easily create originals
The purpose is to provide a machine. [0005] Means for Solving the Problems To achieve the above object,
Therefore, according to the first aspect of the invention, a specific mark is added to a document image.
Specific mark generating means for reproducing the added image;
Detects the presence or absence of specific marks in scanned original images
Mark presence / absence detection means and mark presence / absence detection means
When a specific mark in the original image is detected,
Control means to make the work different from normal, The presence or absence of the mark
When a specific mark on the original image is detected by the output unit
Operate the function of the control means that makes the copying operation different from normal
Mode signal set based on the input designation from the
On / off means for turning on / offWith
You. [0006] [0007] [0008] [0009] According to the first aspect of the present invention, the specific mark is added to the original image.
The image with the specific mark added by the
And the presence or absence of specific marks in the scanned original image
It is detected by the mark presence / absence detection means. The control means is
Specific mark on original image detected
In this case, the copying operation is made different from the normal operation.Mark presence
If the detection means detects a specific mark in the original image
In this case, the function of the control means that makes the copying operation
The mode signal set based on the input designation from Kubu
It is turned on / off by more on / off means. [0010] [0011] [0012] [0013] FIG. 2 shows the appearance of a first embodiment of the present invention. original
Originals are set on the platen 11 with the surface to be read facing down
The operation unit 12 is operated by the user or various tables are displayed.
Or make an announcement. The original on the platen 11 is in the first embodiment.
Is read by the reading unit, and the image from the reading unit is read.
The data is subjected to various types of image processing by an image processing unit.
The writing unit uses the image data based on the image data from the image processing unit.
Selection of paper feeder using paper cassettes 13 and 14
The reproduced image is recorded on the copy paper from the
The paper is discharged to the tray 15 as pees. The reading unit scans the original on the original platen 11 in the main scanning direction.
Scan while scanning in x and sub-scanning direction y.
Main scanning is performed electronically by a CCD line sensor.
The sub-scan is performed by the original on the original platen 11 and the CCD line sensor.
This is performed by relative position movement. In addition, the reading unit
In both reading and writing, the image is decomposed into pixels.
It is done. Resolution of main scan and sub scan is 400 DPI
(DOT PER INCHI). FIG. 3 shows whether the original is read in the first embodiment.
Flow of image data from recording to playback image recording and image data
FIG. 4 is a block diagram showing a flow of a control signal of FIG. Reading unit 16
Indicates that the document on the document table 11 is moved in the main scanning direction x and the sub scanning direction.
reading by CCD line sensor while scanning y
Amplification of the image signal from the CCD line sensor, A / D
Performs processing such as conversion and shading correction. Image processing
The section 17 filters the image data A from the reading section 16.
Processing such as image processing, scaling processing, and gradation processing. The writing unit 18 is used by a laser beam printer.
The image data B from the image processing unit 17
Modulation of the beam, charging of the photoconductor and its laser beam
To form an electrostatic latent image, and develop and copy this electrostatic latent image.
By transferring and fixing to photo paper,
Make a recording. From the operation unit 12, the gradation processing mode,
Conditions such as image density and magnification, and output
The input of the setting such as the mode is performed, and the control unit 19 operates the operation unit.
A control signal C based on the input signal from the
6. Send to the image processing unit 17 and the writing unit 18 to send the reading unit 1
6. Control the operations of the image processing unit 17 and the writing unit 18. FIG. 1 shows a first example of the image processing unit 17.
FIG. 4 is a block diagram showing a portion related to a characteristic portion of the embodiment.
is there. Image data A and B areFIG.From the reading unit 16
The output image data A is output from the image processing unit 17.
Image data B. Image data A, B, E, F, G
Is a signal multi-valued quantized with respect to density for each pixel. The input image data A is filtered by the filter unit 20.
The image data E is subjected to MTF correction. The magnification unit 21 is
The image data E from the filter unit 20 is enlarged in the main scanning direction.
Alternatively, the reduction processing is logically (or electronically) performed. Side run
When the original on the platen 11 is read,
Relative position between CD line sensor and original on platen 11
The control unit 19 controls the position movement speed, that is, the sub-scanning speed.
Control is performed. The image data F scaled by the scaling unit 21 is
In the gradation processing unit 22, the density relationship between the original and the reproduced image is
Gamma conversion is performed so as to obtain a desired relationship.
8 that has been subjected to gradation processing so that
This becomes image data G. The video control unit 23 includes the gradation processing unit 2
2 controls image data G from input signals H, J, etc.
Then, the image data is output to the writing unit 18 as image data B. That is, the video control unit 23 performs the mark detection.
The copy prohibition mark is detected by the output unit 24 and the mark is detected.
When the signal H is input from the mark detection unit 24,
The data G is cut to make the image data B = 0, and the reproduced image
Is set to white (nothing is recorded). Also,
In the mark generation mode, the mark from the mark generation unit 25 is
Image data J by combining the image signal J and the image data G.
Output as The mark detection unit 24 receives the mark from the filter unit 20
Analyze the image data E and copy prohibition mark in the original image
Judge whether or not there is a copy prohibition mark in the original image.
Is output, the mark detection signal H = 1 is output. mark
The generation unit 25 is a reproduction image in which a special image is added to the original image.
For the purpose of obtaining an image, the image signal J for that particular image is
appear. Some examples of special images are
However, in the first embodiment, the copy prohibition mark is used.
Is also one of the special images, and the image signal is marked
Generated by the generator 25. FIG. 4 shows the internal configuration of the mark detection unit 24.
It is a block diagram. The feature generating section 26 has a copy prohibition mark
Generate feature data L. This feature data L is predetermined
Other features based on the shape, density, etc. of the copy prohibition mark
The position and arrangement of the copy prohibition marks on the original
Created based on In addition, at the time of
The image data E is data scaled in the sub-scanning direction,
In addition, so-called non-magnification processing is not performed in the main scanning direction.
Considering the nature of double image data, feature data
L has been created. The feature extracting section 27 is based on the image data E
Corresponding to the feature data L generated by the feature generator 26.
By extracting the signature, the copy prohibition mark
Extract features and output the result as extracted data K
You. The collating unit 28 extracts the extracted data K from the feature extracting unit 27
Is compared with the feature data L from the feature generating unit 26,
The matching result M is output. The judging unit 29 includes a collating unit 28
The presence or absence of a copy prohibition mark based on the collation result M from
Judgment is made jointly and copying is prohibited if there is a copy prohibition mark
A mark detection signal H = 1 is generated. FIG. 5 shows the internal structure of the mark generator 25.
It is a block diagram. The signal CK is the pixel clock in the main scanning direction.
The X counter 30 counts the signal CK and duplicates it.
A signal XA indicating a pixel address in the main scanning direction on a copy sheet
Occurs. The signal SYNC is a line synchronization signal in the main scanning direction.
And the Y counter 31 counts the signal SYNC.
Representing the pixel address in the sub-scanning direction on the copy paper
Generate YA. The pattern generator 32 has a ROM (READ)
  ONLY MEMORY), and the signals XA, Y
A, MARK specifies an address, and this address
Is output. mark
The pattern data P is stored in the pattern generator 32.
Number prohibition mark in addition to the copy prohibition mark
Various characters, symbols, and marks (hereinafter referred to as marks, etc.)
Pattern data selected from the pattern data
It is. The pattern data of any mark or the like in the ROM 32
Data is selected by the address input signal M to the ROM 32.
Determined by ARK. Address input signal MARK is RO
4-bit command representing the type of pattern data in M32
Signal, for example, if it is 0001, it is duplicated.
Shows the prohibition mark. Mark pattern data P is 8
PSC section (parallel / serial conversion section)
33, a parallel / serial conversion is performed and a pixel-based serial signal MP
Become. The control unit 34 sets a mark on the copy paper at any position.
To control whether or not to record
The signal XY = 1 is generated only during the period. AND circuit 35
The signal J is generated by ANDing the signals MP and XY. this
The signal J is an image signal such as a mark to be recorded. FIG. 6 is a block diagram showing a main part of the video control unit 23.
FIG. The signals B, G, H and J areFIG.Same as
You. The video control unit 23 includes an RS flip-flop 36,
NAND gate 37, AND gates 38 and 39, OR circuit
40. The signal MD has detected a copy prohibition mark.
The image data and output the original image as the playback image.
Mode to enable the function that does not
Mode signal, based on an input designation from the operation unit 12.
Is set. The signal RS isFIG.The control unit 19 shown in
Pulse signal generated at the start of copying operation.
And resets the flip-flop 36 for each copy operation
I do. The signal JG is the mark image signal J and the original image data.
Is a signal indicating the mode of whether or not to synthesize and output
Output the mark image signal J by combining it with the original image data.
It becomes 1 in the combining mode. This signal JGFIG.Shown in
Generated by the control unit 19. Next, the operation of the video control unit 23 shown in FIG.
Will be described. The original is set on the platen 11 and the operation unit
When the copy start key 12 is pressed, the copy operation starts.
Signal RS is generated and the flip-flop 36 is reset.
Is The reading scan of the original proceeds, and the original
There is a copy prohibition mark on the original set in
When this is detected by the mark detection unit 24,
The lock detection signal H changes from 0 to 1. When the mark detection signal H changes to 1, a free
The flip-flop 36 is set and the flip-flop 36
Becomes 1. Here, the copy prohibition control function is
In the effective mode, MD = 1 and the NAND gate 37
The output signal MK becomes 0. When MK becomes 0, the image data
The output signal GB of the AND gate 38 is 0 regardless of the
(Corresponding to white of the reproduced image). With copy prohibition control function
If not in effective mode, MD = 0 and NAND gate 37
Output signal MK becomes 1, and the image data G
Pass 38 Also, the mark image signal J is converted to the original image.
When the combination mode for combining and outputting data is off
In other words, when JG = 0, the AND gate 39
Output signal JB becomes zero. Therefore, the copy prohibition control function is enabled.
Mode and the composition mode is off,
After the mark is detected by the mark detection unit 24,
The image is no longer recorded and the reproduced image becomes a white image. Ma
The mark image signal J is combined with the original image data and output
The combination mode is ON, that is, JG = 1
In the case of, the mark corresponding to the type of the selected mark etc.
Circuit image signal J passes through AND gate 39 and OR circuit
40, and is output as a signal B.
Are recorded on the copy sheet. Also, and gate
37The output signal MK ofFIG.Sent to the control unit 19 shown in
When the control unit 19 receives the signal MK, the control unit 19
The original you are trying to copy is a copy-protected original and the copy
Message that the document cannot be copied
Beep sounds to warn that copying is not possible.
Let On the original set on the original platen 11
If no copy prohibition mark exists, mark detection
The mark detection signal H from the unit 24 remains at 0,
The output signal MK of the gate 37 remains 1. others
The image data G passes through the AND gate 38 and
The image is recorded as a reproduced image. Also, a copy prohibition controller
If the function is not in the valid mode and MD = 0,
When the output signal MK of the gate 37 remains 1 and the image data
The document G passes through the AND gate 38, and the original image is a reproduced image.
Is recorded as FIG. 7 shows the shape of the copy prohibition mark. this
The copy prohibition mark 41 has a plurality of concentric circles 41 having different diameters.₁~
41_ThreeIt consists of. The mark generation unit 25
The mark pattern of the copy prohibition mark 41 in the turn generator 32
Data is stored and the copy prohibition mark 41
The signal is generated as a special image signal J. Mark detector
Numeral 24 analyzes the image data E and prohibits copying in the original image
Determine whether mark 41 is present or not and copy it in the original image
When the prohibition mark 41 exists, the mark detection signal H = 1 is output.
Power. In the mark detecting section 24, a feature generating section
26 generates the characteristic data L of the copy prohibition mark 41,
The feature extraction unit 27 is a feature generation unit 2 based on the image data E.
6, a feature corresponding to the feature data L generated is extracted, and
Is output as extracted data K. The collating unit 28
The extracted data K from the feature extraction unit 27 and the feature generation unit 26
The data is compared with the feature data L, and the matching result M is output.
Power. The judging unit 29 adds the collation result M from the collation unit 28
The presence or absence of the copy prohibition mark 41 is comprehensively determined based on the
If there is a copy prohibition mark 41, a copy prohibition mark is detected
Generate signal H = 1. FIG. 8 shows the copy prohibition mark 41 in the enlarged copy mode.
The state of image data E when read with
FIG. 3 is a schematic diagram showing an original development, in which image data E is
Enlarged in the scanning direction y, but in the main scanning direction x
It has become. FIG. 9 shows the copy prohibition mark 41 in the reduced copy mode.
The state of the image data E when read in
FIG. 3 is a schematic diagram showing a three-dimensionally developed image data, wherein image data E is
It is reduced in the scanning direction y but equal in the main scanning direction x.
Doubled. The image data E of FIG. 8 and FIG.
The developed schematic diagrams are both located at a certain position 1 in the main scanning direction x.
In the main scanning direction, a fixed image pattern is
Turn, and the copy prohibition mark 41 is concentric circle 41
₁~ 41_ThreeThe document is obliquely placed on the platen 11
Even if it is set, the image pattern is still constant. Special
The signature extraction unit 27 extracts a copy prohibition mark from the image data E.
To extract scanning direction pattern data,
In-memory is required, complicating the configuration, and
However, the first embodiment has the disadvantage that the
8 and FIG. 9, the copy prohibition mark 41 is
Extract features only with the image pattern in the main scanning direction of data E
Large advantages in terms of configuration and cost
No. FIG. 10 shows a first embodiment in which copying is prohibited on copying paper.
An example in which a stop mark 41 is recorded is shown, and reproduction using an original image
Images are not shown. On the copy paper 42, a plurality of
The copy prohibition mark 41 is recorded discretely, and one circle
One copy prohibition mark 41 is shown. Manuscript
Can be set on the platen 11
Try to copy a part of the above original with another white paper
Even if the copy prohibition mark 41 is read somewhere
Many copy prohibition marks 41 on the copy paper 42
Are arranged. As described above, a large number of copy prohibitions are
Since the stop marks 41 are arranged, the determination unit in FIG.
At 29, the presence or absence of the copy prohibition mark 41 is comprehensively determined.
In this case, the copy prohibition mark 41 is detected in a certain number or more.
In this case, it is determined that the copy prohibition mark 41 is present.
To prevent erroneous detection of the copy prohibition mark 41 and improve the detection accuracy.
Can be raised. FIG. 11 shows a copy in the second embodiment of the present invention.
Indicates the shape of the prohibition mark. The copy prohibition mark 43 is a 16-pixel
And one dot is 2 × 2 pixels.
You. The second embodiment differs from the first embodiment in that copying is prohibited.
A copy prohibition mark 43 is used instead of the stop mark 41,
The mark generator 25 has a copy prohibition mark in the pattern generator 32.
Copy mark mark data of mark 43
Prohibition mark 43 signal is generated as special image signal J
I do. The mark detection unit 24 analyzes the image data E and
Determine whether copy prohibition mark 43 is present in original image
If there is a copy prohibition mark 43 in the original image,
And outputs a lock detection signal H = 1. In the mark detecting section 24, the characteristic generating section
26 generates the characteristic data L of the copy prohibition mark 43,
The feature extraction unit 27 is a feature generation unit 2 based on the image data E.
6, a feature corresponding to the feature data L generated is extracted, and
Is output as extracted data K. The collating unit 28
The extracted data K from the feature extraction unit 27 and the feature generation unit 26
The data is compared with the feature data L, and the matching result M is output.
Power. The judging unit 29 adds the collation result M from the collation unit 28
The presence or absence of the copy prohibition mark 43 is comprehensively determined based on the
If copy prohibition mark 43 is present, copy prohibition mark is detected
Generate signal H = 1. In the second embodiment, the copy prohibition mark 43
Are composed of halftone dots, so that the mark detection unit 24
The copy prohibition mark 43 is a halftone dot, the copy prohibition mark
The pitch of 43 dots, the number of halftone dots in one area, etc.
The copy prohibition mark 43 can be detected as a
There is a merit that it is easy to detect the prohibition mark
You. FIG. 12 shows a copy in the third embodiment of the present invention.
Indicates the shape of the prohibition mark. The copy prohibition mark 44 includes numerals, symbols, and sentences.
Special images such as characters, for example, the inside of the number 2 as a halftone dot
It is composed. In the third embodiment, the first embodiment is used.
, The copy prohibition mark is used instead of the copy prohibition mark 41
44, and the mark generation unit 25 uses the pattern generator 3
2 has mark pattern data of the copy prohibition mark 44.
The signal of the copy prohibition mark 44
Generated as signal J. The mark detection unit 24 outputs the image data
The data E is analyzed and the copy prohibition mark 44 is present in the original image.
Or not, and the copy prohibition mark 44 is
If there is, a mark detection signal H = 1 is output. In the mark detecting section 24, the feature generating section
26 generates the characteristic data L of the copy prohibition mark 44,
The feature extraction unit 27 is a feature generation unit 2 based on the image data E.
6, a feature corresponding to the feature data L generated is extracted, and
Is output as extracted data K. The determination unit 29
Copy prohibition mark based on collation result M from collation unit 28
The presence or absence of the copy prohibition mark 44 is determined comprehensively.
In this case, a copy prohibition mark detection signal H = 1 is generated. In the third embodiment, the copy prohibition mark 44
Is composed of halftone dots inside the numbers.
In the mark detector 24, the copy prohibition mark 44 is a halftone dot.
In addition, the shape of the copy prohibition mark 44 as a whole
One of the features is that it is a fixed number.
44 can be detected.
This makes it easier to copy the dot image on the original
Error can be prevented.
There is a lit. FIG. 13 shows a copy in the fourth embodiment of the present invention.
Indicates the shape of the prohibition mark. The copy prohibition mark 45 is divided by concentric circles.
Yellow area 45₁, Blue area 45_Two, Red area
45_ThreeThe combination of colors is one of the features
is there. The fourth embodiment is constituted by a color copying machine,
In one embodiment, the reading unit 16 reads a document on the platen 11.
Scan and separate color into 3 colors while scanning and read 3 colors
A device that sequentially outputs image data is used. Also,
The image processing unit 17 receives three color image data from the reading unit 16.
The writing unit 18 sequentially processes the data from the image processing unit 17.
Each toner image is formed on the photoreceptor by the three color image data
Laser beam to transfer these onto transfer paper
Printer is used. In the fourth embodiment, the copy prohibition mark 4
A copy prohibition mark 45 is used instead of 1 and a mark is generated.
The unit 25 includes a copy prohibition mark 45 in the pattern generator 32.
Copy prohibition mark where mark pattern data is stored
Forty-five signals are generated as a special image signal J. Mar
The detection unit 24 analyzes the image data E and adds
It is determined whether the copy prohibition mark 45 is present or not, and
When the copy prohibition mark 45 is present, the mark detection signal H
= 1 is output. In the mark detecting section 24, the feature generating section
26 generates feature data L of the copy prohibition mark 45,
The feature extraction unit 27 is a feature generation unit 2 based on the image data E.
6, a feature corresponding to the feature data L generated is extracted, and
Is output as extracted data K. The collating unit 28
The extracted data K from the feature extraction unit 27 and the feature generation unit 26
The data is compared with the feature data L, and the matching result M is output.
Power. The judging unit 29 adds the collation result M from the collation unit 28
The presence or absence of the copy prohibition mark 45 is comprehensively determined based on the
If copy prohibition mark 45 is present, copy prohibition mark is detected
Generate signal H = 1. In the fourth embodiment, the copy prohibition mark 45
Is composed of multiple areas with different colors,
Especially effective for color copiers, but also for black and white copiers
It is. The mark detection unit 24 detects the copy prohibition mark 45
Detecting that color combination as one of the features
Detection of copy prohibition marks becomes easier,
The advantage that it can be improved is obtained. FIG. 14 shows a copy in the fifth embodiment of the present invention.
Indicates the shape of the prohibition mark. The copy prohibition mark 46 is divided by concentric circles.
High density area 46₁, Low density area 46_Two, Dark
Area 46 with intermediate degrees_ThreeConsisting of
Matching is one of the features. In the fifth embodiment, the first
In the embodiment, copy prohibition is used instead of the copy prohibition mark 41
The mark 46 is used, and the mark generator 25 generates a pattern.
Mark pattern data of the copy prohibition mark 46 in the creature 32
The signal of the copy prohibition mark 46 is stored in a special
Generated as an image signal J. The mark detection unit 24
The image data E is analyzed and a copy prohibition mark 46 is included in the original image.
Judge whether or not there is a copy prohibition mark in the original image.
When there is a mark 46, a mark detection signal H = 1 is output. In the mark detecting section 24, the characteristic generating section
26 generates the characteristic data L of the copy prohibition mark 46,
The feature extraction unit 27 is a feature generation unit 2 based on the image data E.
6, a feature corresponding to the feature data L generated is extracted, and
Is output as extracted data K. The collating unit 28
The extracted data K from the feature extraction unit 27 and the feature generation unit 26
The data is compared with the feature data L, and the matching result M is output.
Power. The judging unit 29 adds the collation result M from the collation unit 28
The presence or absence of the copy prohibition mark 46 is comprehensively determined based on the
If there is a copy prohibition mark 46, a copy prohibition mark is detected
Generate signal H = 1. In the fifth embodiment, the copy prohibition mark 46
Consists of multiple areas with different concentrations
In the mark detection unit 24, the copy prohibition mark 46 is
The combination of density can be detected as one of the features.
Detection of the copy prohibition mark becomes easier and the detection accuracy is improved.
The advantage is that it can be raised. FIG. 15 shows a copy in the sixth embodiment of the present invention.
Indicates the shape of the prohibition mark. The copy prohibition mark 47 is divided by concentric circles.
Regions having different halftone dot densities, for example, 1
An area 47 having a dot of 00 lines / inch₁, 75 lines / a
Area 47 having a halftone dot_TwoIt consists of. Sixth
In the embodiment, the copy prohibition mark in the first embodiment is used.
The copy prohibition mark 47 is used in place of the
The raw portion 25 has a copy prohibition mark 47 in the pattern generator 32.
Mark pattern data is stored in the
The signal of step 47 is generated as a special image signal J. Ma
The peak detection unit 24 analyzes the image data E and outputs
It is determined whether there is a copy prohibition mark 47 on the
A mark detection signal when there is a copy prohibition mark 47 in the image
H = 1 is output. In the mark detecting section 24, the characteristic generating section
26 generates the characteristic data L of the copy prohibition mark 47,
The feature extraction unit 27 is a feature generation unit 2 based on the image data E.
6, a feature corresponding to the feature data L generated is extracted, and
Is output as extracted data K. The collating unit 28
The extracted data K from the feature extraction unit 27 and the feature generation unit 26
The data is compared with the feature data L, and the matching result M is output.
Power. The judging unit 29 adds the collation result M from the collation unit 28
The presence or absence of the copy prohibition mark 47 is comprehensively determined based on the
If copy prohibition mark 47 is present, copy prohibition mark is detected
Generate signal H = 1. There are halftone images of various densities in a general manuscript.
May exist, but multiple dots with different densities
Very few images coexist, and in the sixth embodiment,
Errors that mistakenly detect halftone dots in the original image as copy prohibition marks.
The advantage that it can be prevented is obtained. FIG. 16 shows a copy in the seventh embodiment of the present invention.
Indicates the shape of the prohibition mark. The copy prohibition marks 48 have line widths
A plurality of different lines, for example, thin lines 48₁, With intermediate width
Line 48_Two, Thick line 48_ThreeIt consists of. Seventh embodiment
In the first embodiment, the copy prohibition mark 41 is
Instead, a copy prohibition mark 48 is used, and the mark generation unit 2
5 is a mark of the copy prohibition mark 48 in the pattern generator 32.
Copy prohibition mark 48
Is generated as a special image signal J. Mark inspection
The output unit 24 analyzes the image data E and copies it into the original image.
It is determined whether the prohibition mark 48 exists or not, and the
When the copy prohibition mark 48 is present, the mark detection signal H = 1
Is output. In the mark detecting section 24, the feature generating section
26 generates the characteristic data L of the copy prohibition mark 48,
The feature extraction unit 27 is a feature generation unit 2 based on the image data E.
6, a feature corresponding to the feature data L generated is extracted, and
Is output as extracted data K. The collating unit 28
The extracted data K from the feature extraction unit 27 and the feature generation unit 26
The data is compared with the feature data L, and the matching result M is output.
Power. The judging unit 29 adds the collation result M from the collation unit 28
The presence or absence of the copy prohibition mark 48 is comprehensively determined based on the
If copy prohibition mark 48 is present, copy prohibition mark is detected
Generate signal H = 1. In the seventh embodiment, the copy prohibition mark 48
Is composed of multiple lines with different line widths.
One of the features of the prohibition mark is the combination of its line width.
To improve the detection accuracy of the copy prohibition mark.
Can be up. FIG. 17 shows a copy in the eighth embodiment of the present invention.
Indicates the shape of the prohibition mark. This copy prohibition mark has a different image property.
This copy is made up of two types of copy prohibition marks 49 and 50.
Prohibition marks 49 and 50 are placed on the same copy paper 51
Are recorded in a discrete array. In the eighth embodiment,
In the first embodiment, a copy is made instead of the copy prohibition mark 41.
The prohibition marks 49 and 50 are used, and the mark generation unit 25
The copy prohibition marks 49 and 50 are
Mark pattern data is stored and the copy prohibition mark 4
9, 50 signals are generated as a special image signal J.
The mark detection unit 24 analyzes the image data E and
Determine whether or not copy prohibition marks 49 and 50 are inside
And there are copy prohibition marks 49 and 50 in the original image
Outputs a mark detection signal H = 1. In the mark detecting section 24, the characteristic generating section
26 generates the characteristic data L of the copy prohibition marks 49 and 50
Then, the feature extracting unit 27 generates a feature based on the image data E.
Extract features corresponding to feature data L generated in raw section 26
Then, the result is output as extracted data K. Collation unit 2
8 is the extracted data K from the feature extraction unit 27 and the feature generation unit
26 is compared and compared with the feature data L from
Output M. The determination unit 29 receives the collation result from the collation unit 28.
Comprehensive the presence / absence of copy prohibition marks 49 and 50 based on the result M
If there are copy prohibition marks 49 and 50,
A copy prohibition mark detection signal H = 1 is generated. In the eighth embodiment, the copy prohibition mark 4
Characteristic in that 9, 50 are plural types of copy prohibition marks
In addition, multiple types of copy prohibition marks with different image properties
49 and 50 are arranged in large numbers.
The copy prohibition mark is detected based on the
One of the copy prohibition marks 49 and 50 in the image of the general manuscript
If an image similar to one exists,
If the copy prohibition mark is not added,
The advantage of being able to prevent errors
Can be [0068] [0069] [0070] [0071] [0072]FIG.Is the second9Copying in the embodiment
Indicates the shape of the prohibition mark. This copy prohibition mark 60
It is a mark that encloses the letter “secret” in Japan.
It is often used in stamps etc.
Image. This second9In the embodiment, the first embodiment
In the example, instead of the copy prohibition mark 41,
The mark generator 25 is a pattern generator.
32, the mark pattern data of the copy prohibition mark 60
The stored signal of the copy prohibition mark 60 is stored in a special image
Is generated as a signal J. The mark detection unit 24 outputs the image data.
Data E is analyzed and the copy prohibition mark 60 exists in the original image.
It is determined whether or not there is a copy prohibition mark 60 in the original image.
Is output, the mark detection signal H = 1 is output. This ma
The peak detector 24 is a known OCR (Optical Chracter).
(Recognition) technology. This
No.9In the embodiment, a stamping device, which has been widely used
It is also possible to give the role of a copy prohibition mark with a seal
It is. Note that the9In an embodiment, a copy-protection marker
The mark 60 encloses the character “secret” with a circle and forms a dot inside the circle.
May be performed. In this case, the mark detection unit 24
Is a halftone dot, and the meaning of the “secret” character
Does not relate to the detection of the mark detection unit 24. “Secret” sentence
Characters give humans the meaning of "secret documents"
have. The copy prohibition mark 60 has a plurality of lines having different line widths.
Composed of different types of linesYou may. FIG.19Is the second10Multiple examples in the embodiment
This shows the shape of the copying prohibition mark. The copy prohibition mark 61 has 1 to 4 pixels.
One dot is composed of a cyan dot C and a magenta dot C.
A plurality of dots M and yellow dots Y were dispersed and arranged.
Is represented by the dot arrangement and color
You. No.10In the embodiment, the color copying machine according to the fourth embodiment is described.
, A copy prohibition mark instead of the copy prohibition mark 45
61 is used, and the mark generator 25 is
The mark pattern data of the copy prohibition mark 61 is
The signal of the copy prohibition mark 61
Generated as signal J. The mark detection unit 24 outputs the image data
Of the document E and the copy prohibition mark 61 is present in the original image
The copy prohibition mark 61 in the original image
If there is, a mark detection signal H = 1 is output. In the mark detecting section 24, the characteristic generating section
26 generates the characteristic data L of the copy prohibition mark 61,
The feature extraction unit 27 is a feature generation unit 2 based on the image data E.
6, a feature corresponding to the feature data L generated is extracted, and
Is output as extracted data K. The collating unit 28
The extracted data K from the feature extraction unit 27 and the feature generation unit 26
The data is compared with the feature data L, and the matching result M is output.
Power. The judging unit 29 adds the collation result M from the collation unit 28
The presence or absence of the copy prohibition mark 61 is comprehensively determined based on the
If a copy prohibition mark 61 is present, a copy prohibition mark is detected.
Generate signal H = 1. This second10In the embodiment, the copy prohibition mark 6
1 is that a plurality of minute dots are dispersed and configured.
And cannot be easily recognized by the naked eye.
That the original image is easy to read and read.
Lit is obtained. Generally, color copiers are black and white copiers
Compared to a document manuscript in which a picture manuscript is used
In many cases, the copy prohibition mark stands out
Too much damage to the manuscript and the picture itself
May become meaningless, and the copy prohibition mark
Distributing dots and encrypting them has disadvantages
The advantage of eliminating is obtained. FIG.20Is on a copy sheet in another embodiment of the present invention.
Shows a recording of a copy prohibition mark. This example
Are the copy prohibition marks 41 and 43 in each of the above embodiments.
To 48, 60, 61 are specific positions on the copy paper 42, eg
For example, two opposite upper left and lower right edges of the copy paper 42
From the main scanning direction and the full scanning direction₁, L₂One by one
Placed in the position. In this embodiment, l₁, L₂Features
The copy prohibition mark is detected as one of
Mark detection accuracy can be improved. Copy prohibited
Stop marks 41, 43 to 48, 60, and 61 are copy sheets 42.
From the opposite upper left and lower right edges in the main scanning direction
L in the scanning direction₁, L₂Placed at a distance from each other
However, when the original is set on the platen 11,
Detection of the copy prohibition mark even if the orientation of the
It is to be able to obtain. [0079] As described above, according to the first aspect of the present invention,
For example, play an image with a specific mark added to the original image
Special mark generation means for
Detecting means for detecting the presence or absence of a specific mark to be detected
The mark presence / absence detection means
Make copy operation different from normal when mark is detected
Control means, so that the
Manuscripts can be easily created.In addition, mark presence
If the detection means detects a specific mark in the original image
In this case, the function of the control means that makes the copying operation
The mode signal set based on the input designation from Kubu
With on / off means to turn on / off more
Originals with specific marks can be specially copied
Becomes [0080] [0081] [0082]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an image processing unit according to a first embodiment of the present invention. FIG. 2 is a perspective view showing an appearance of the first embodiment. FIG. 3 is a block diagram showing a flow of image data from reading of a document to recording of a reproduced image and a flow of a control signal of the image data in the first embodiment. FIG. 4 is a block diagram illustrating an internal configuration of a mark detection unit in the image processing unit. FIG. 5 is a block diagram illustrating an internal configuration of a mark generation unit in the image processing unit. FIG. 6 is a block diagram illustrating a main part of a video control unit in the image processing unit. FIG. 7 is a view showing a copy prohibition mark of the first embodiment. FIG. 8 is a schematic diagram showing a two-dimensionally developed image data when the copy prohibition mark is read in the enlarged copy mode in the first embodiment. FIG. 9 is a schematic diagram showing a two-dimensionally expanded image data when a copy prohibition mark is read in a reduced copy mode in the first embodiment. FIG. 10 is a diagram showing an example in which a copy prohibition mark is recorded on copy paper in the first embodiment. FIG. 11 is a view showing the shape of a copy prohibition mark according to a second embodiment of the present invention. FIG. 12 is a diagram showing the shape of a copy prohibition mark according to a third embodiment of the present invention. FIG. 13 is a view showing the shape of a copy prohibition mark according to a fourth embodiment of the present invention. FIG. 14 is a diagram showing the shape of a copy prohibition mark according to a fifth embodiment of the present invention. FIG. 15 is a diagram showing the shape of a copy prohibition mark according to a sixth embodiment of the present invention. FIG. 16 is a diagram showing the shape of a copy prohibition mark according to a seventh embodiment of the present invention. FIG. 17 is a diagram illustrating the shape of a copy prohibition mark according to an eighth embodiment of the present invention. FIG. 18 shows a copy prohibition mark according to a ninth embodiment of the present invention .
It is a figure showing the shape of . FIG. 19 is a copy-inhibiting marker according to a tenth embodiment of the present invention .
It is a diagram illustrating a click of a shape. FIG. 20 illustrates another embodiment of the present invention in which copying is prohibited on copying paper.
It is a figure showing what recorded a mark. [Description of Signs] 16 reading unit 17 image processing unit 18 writing unit 23 video control unit 24 mark detection unit 25 mark generation unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 1/38-1/393 H04N 1/40 G03G 21/00 370-502

Claims (1)

(57) [Claims] 1. A specific mark generating means for reproducing an image in which a specific mark is added to a document image, and a mark presence / absence for detecting presence / absence of the specific mark in the read document image Detecting means; control means for making a copying operation different from normal when a specific mark in the document image is detected by the mark presence / absence detecting means;
When a specific mark on the image is detected,
The function of the control means that is different from the usual
On / off by the mode signal set based on the
Copying, characterized in that it comprises an on / off means for
Machine.