JP3228763B2 - 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 copying machine, and more particularly, to a copying machine.
The present invention relates to a copying apparatus having an image synthesizing function.

[0002]

2. Description of the Related Art In a copying apparatus that performs image processing in a digital system, various image processings that cannot be performed in an analog system can be performed. For example, enlargement / reduction, image composition, cutting (deletion), copying of only a specific color, and the like can be easily performed. A processing technique for extracting or erasing only a specific hue of a character is disclosed in JP-A-63-1.
No. 97173.

[0003]

However, the above-mentioned prior art is directed to extracting and erasing characters,
Superimpose is not included and image processing is limited.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a copying apparatus capable of superimposing a character having a specified specific hue.

[0005]

In order to achieve the above object, the present invention provides a method for combining characters on a first document with a second document.
A color copying machine, wherein the color of the characters on the first document is changed.
Specifying means for specifying the coordinates, and
The multi-bit image data of the color of the coordinate set
Extraction means for extracting from the manuscript, and
Upper bit data of the extracted image data and the upper bit data of the first document.
Compares the data at the same bit position in the image data and
Comparing means for extracting the extracted area as characters, and said comparing means
Is combined with the second document as characters
And a combining means.

[0006]

According to the above arrangement, a plurality of color coordinates at the designated coordinates are displayed.
The upper bit data of the original image data and the original image data.
Data at the same bit position in the
Because it is extracted as characters, the color of the characters on the original
Specified or specified, even if there is
Hue characters can be superimposed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of a copying apparatus according to the present invention. FIG. 2 is a front view showing a mechanism configuration of the copying apparatus according to the present invention, and FIG. 3 is a plan view thereof.

As shown in FIG. 2, the copying apparatus comprises four blocks: a printer unit 200, a scanner unit 400, an operation unit, and an image processor. The printer unit is a housing 20
1. a polygon mirror 202 disposed above the inner wall of the housing 201 and scanning a laser beam emitted from a laser (not shown); a lens 203 for condensing and correcting the laser beam from the polygon mirror 202; A mirror 204 for reflecting the laser beam from the lens 203 to an exposure position; a photosensitive drum 205 rotatably disposed at a position where the laser beam reaches from the mirror 204 and having a photosensitive layer provided on the outer peripheral surface; A developing device 207 for developing a latent image formed on the photosensitive drum 205 by exposure with a laser beam with toner,
Paper feed cassettes 208 and 209 which accommodate a large number of transfer papers and are detachably mounted on the housing 201; paper feed rollers 210 and 211 which feed only one transfer paper to a transfer position;
A transfer belt 212 that rotates at a transfer position, a transfer belt charger 213 that charges the transfer belt 212 to attract the fed transfer paper, and a registration roller 214 that waits for the transfer paper to be sent to the transfer position and sends the transfer paper at the same time. , A belt discharging charger 215 for discharging the transfer belt 212, and a separation charger 2 for peeling the transfer paper after the transfer from the transfer belt 212.
16, a cleaning device 217 for removing toner remaining on the photosensitive drum 205 after transfer, a transfer charger 218 for transferring a toner image on the photosensitive drum 205 onto a fed transfer sheet, a pressure roller 219, A fixing roller 2 that rotates while being in pressure contact with the pressure roller 219 and fixes the toner image on the transferred paper by heat and pressure.
20 and a paper discharge tray 221 for accommodating the fixed recording paper.

Further, in the housing 201, image processors 301, 302, and 303 for performing image processing and creating image editing data by calculation according to the contents of editing are housed.

[0010] A scanner unit and an operation unit are arranged on the upper part of the housing 201. The scanner unit includes a fluorescent lamp 401 for illuminating a document placed on a platen glass (not shown),
The light-electric conversion element (CCD) 402 that reads reflected light from the illuminated portion of the document and converts it into a charge amount, the fluorescent lamp 401, and the photoelectric conversion element 402 are moved at a constant speed in the sub-scanning direction to form a two-dimensional image. A carriage 403 for reading the original image,
Each of the image leading edge sensors 404 detects that the carriage 403 has reached the leading edge of the image area.

A platen cover 222 for pressing a document placed on a platen glass is disposed on the scanner unit, and an editor 106 is disposed on the upper surface thereof as shown in FIG. . An operation unit (panel) 107 is provided at the front of the upper surface of the scanner unit. Reference numeral 108 provided at the rear is an external input terminal for inputting image data from outside.

The schematic operation of the above configuration will be described. When a document is set on the platen glass and a start button (copy start key) is pressed, the fluorescent light 401 is pressed.
Lights up, then the carriage 403 starts moving in the direction of the arrow, and scanning of the document is started. The reflected light accompanying the movement of the carriage 403 is photoelectrically converted by the photoelectric conversion element 402 sequentially, and image processing and image editing are performed by the system controller in accordance with the editing contents specified in advance by the operation unit 107. The processing results are stored in the image processors 301, 302, and 303. The image editing data stored in the image processors 301, 302, 303 is sent to the printer unit.

The printer unit includes a laser driver (not shown).
A laser element (not shown) is driven by the laser driver, and a laser beam output from the laser element is exposed to the photosensitive drum 205 which has been charged by the charging charger 206 in advance via the lens 203 and the mirror 204. And a latent image is formed on the photosensitive drum 205. The latent image reaches a position facing the developing device 207 with the rotation of the photosensitive drum 205, and the developing device 207 performs development with toner.

On the other hand, the paper size specified by the operation unit 107 is fed from one of the paper feed cassettes 208 and 209 in accordance with the rotation of the photosensitive drum 205, and stopped at the position of the registration roller 214. Then, in synchronization with the arrival of the visible image by the development at the transfer position, the registration roller 2
14 rotates, the transfer sheet is conveyed onto the transfer belt 212, and is attracted to the belt surface by the transfer belt charger 213. The toner image on the photosensitive drum 205 is sequentially transferred to the transfer paper by the transfer charger 218,
With the rotation of the transfer belt 212, the separation charger 216
When the sheet is conveyed in the direction and reaches a position facing the separation charger 216, the transfer sheet is separated from the belt surface from the leading end and is sent out in the horizontal direction. Thereafter, the leading end of the transfer sheet is inserted between the pressure roller 219 and the fixing roller 220, and the toner image is fixed on the transfer sheet while passing between the rollers. The fixed recording paper is sent out onto a discharge tray 221.

Next, the configuration of FIG. 1 will be described. The system controller 101 that performs image processing and image editing in accordance with the content specified by the operation unit 107 has an external input device 102 (for example, an external input device 102 that extracts or writes data from a storage medium (for example, a floppy disk) that stores image data. , Disk drive), 40
A scanner 103 consisting of 1 to 404;
3, the image processor 104,
The printer 105 and the operation panel 107 are connected to each other. Note that an editor 106 is connected to the operation panel 107.

In FIG. 1, image data from an external input device 102 or a scanner 103 is subjected to image processing for image processing and image editing by an image processor 104, and the result is sent to a printer 105 and transferred as described above. An image is formed on paper by electrophotography.

FIG. 4 is a flowchart showing an example of processing in the present invention. Here, a character synthesis (superimpose) process is shown. When superimposition is instructed from the operation panel 107, one point in the document indicating the superimposition area, the area to be combined, and the color of the character to be extracted is input from the editor 106 (steps 501, 502, 503). The information is transmitted to the system controller 101. The user is instructed from the operation panel 107 to set the document to be combined as shown in FIG. 5 (step 504), and when the user presses the start button (step 505), the operation panel 10 is operated.
7, a start signal is sent to the system controller 101, the scanner 103 is activated, and the document to be combined is read and stored (step 506).

Subsequently, setting of a document to be superimposed as shown in FIG. 6 is instructed (step 507), and when the start button is pressed by the user (step 508), the operation is started from the operation panel 107 to the system controller 101. A signal is sent. The system controller 101 sets the coordinates specified by the editor 106 in the image processor 104, starts the scanner 103, and reads the color of the character to be superimposed (step 509). Only the upper bits of the read character color data are set in the image processor 104 by the system controller 101 and compared with the image data of the document to be superimposed (step 510), and only the data to be superimposed is extracted. (Step 511). The data of the composite image obtained as shown in FIG. 7 is output to the printer 105 (step 512).

FIG. 8 shows the system controller 101, scanner 103 and image processor 104 shown in FIG.
FIG. 4 is a block diagram showing the details of.

The scanner 103 includes CCDs 103a, 103b, and 103c that output R, G, and B color signals, and analog / digital (A / D) that digitizes analog color signals.
D) Converters 103d, 103e, 103f, shading correction circuit 1 for removing shift-variant noise
03g each. The image processor 104 includes a gamma correction circuit 104a, a complementary color generation circuit 104
b, a shift circuit 104c, a storage medium 104d, a synchronization signal generation circuit 104e, an area signal generation circuit 104f, and a comparison circuit 104g. Further, the system controller 101 includes a controller unit 101a and an input / output (I / O) unit 101b.

The scanner 103 has R, G,
Each of the B signals is output after being subjected to shading correction, and the image data is subjected to γ correction (correction for changing the amplification factor of contrast at the center portion and the end portion of the density width) by the γ correction circuit 104a. Next, the complementary color generation circuit 104b
Is converted into image data of Y (yellow), M (magenta), C (cyan), and K (black). For these image data, the shift circuit 104c moves the image data by the shift amount according to the to-be-combined area set by the system controller 101.

A semiconductor memory or the like is used as the storage medium 104d, and image data is written to the storage medium 104d only in an area specified by a signal from the area signal generation circuit 104f. The area signal generating circuit 104f has a function of generating an area signal at an arbitrary position based on data from the system controller 101. The comparison circuit 104g compares the image data of the superimposed document with the color data of the superimposed character set by the system controller 101, and outputs a match signal. At this time, the image data and the color data to be compared are only the upper bits of the output data from the shift circuit 104c. Since the lower bits are not compared, all the image data having a certain color difference with respect to the color specified by the editor 106 outputs a coincidence signal. Then, the logical sum of the coincidence signal and the area signal is used to calculate the storage medium 104.
The data on d is overwritten, and superimposition of an arbitrary color is performed.

For example, if the image data is 8 bits (0 to FF)
H), the comparison data is 4 bits, and the color data of the superimposed character is Y = 55H, M = 55H, C =
If it is read as 55H, K = 55H, the image data is Y = 50-5FH, M = 50-5FH, C = 50-
When 5FH, K = 50 to 5FH, a coincidence signal is output to all. As a result, the approximate value of the superimposed character and the read image data are all superimposed.

[0024]

As described above, according to the present invention, the finger
The upper bits of the multi-bit image data of the color of the specified coordinates
Data at the same bit position of the original data and the original image data
Are compared, and the matched area is extracted as characters.
The color of the text on the manuscript is uneven or there is a reading error
Even if a character with the specified specific hue is
Can be used.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a copying apparatus according to the present invention.

FIG. 2 is a front view showing a mechanism configuration of the copying apparatus according to the present invention.

FIG. 3 is a plan view of the copying apparatus shown in FIG. 2;

FIG. 4 is a flowchart illustrating a processing example according to the present invention.

FIG. 5 is a document image diagram showing an example of a document to be combined used in a superimposing process.

FIG. 6 is a document image diagram showing an example of a document to be superimposed.

FIG. 7 is an image diagram showing a composite image obtained by a superimposition process.

FIG. 8 is a block diagram illustrating details of a system controller, a scanner, and an image processor illustrated in FIG. 1;

[Explanation of symbols]

Reference Signs List 101 system controller 101a controller unit 101b input / output unit 102 external input device 103 scanner 103a, 103b, 103c CCD 103d, 103e, 103f analog / digital converter 104, 301, 302, 303 image processor 104a gamma correction circuit 104b complementary color generation circuit 104c shift circuit 104d storage medium 104e synchronization signal generation circuit 104f area signal generation circuit 104g comparison circuit 105 printer 106 editor 107 operation panel 200 printer unit 202 polygon mirror 205 photosensitive drum 206 charging charger 207 developing device 218 transfer charger 220 fixing roller 400 scanner Unit 401 Fluorescent lamp 402 Photoelectric conversion element 403 Carriage

Claims (1)

(57) [Claims] 1. A method of combining characters on a first document with a second document.
To a copying apparatus, specifying means for specifying the color of the first on a document character coordinates
And a plurality of bits of the color of the coordinates specified by the specifying means.
Extracting means for extracting image data from the first document ; upper bits of the image data extracted by the extracting means;
The same bit position of the data and the image data of the first document
Compare the data of each and extract the matched area as characters
Comparing means for extracting the area extracted by the comparing means
Copying apparatus provided with a combining means for combining the document, the.