JPH05219321A - Copying machine - Google Patents

Abstract

PURPOSE:To continue copying even when copy paper of a size in use runs short on the way of copying and paper of the same size cannot be supplemented by controlling copying based on the paper size at copy start when the paper size is revised on the way of magnification consecutive shot. CONSTITUTION:A CPU 1 controls the entire machine, a ROM 2 stores a control program or fixed data or the like by which the CPU 1 executes various kinds of processing and a RAM 3 is used for a work area or the like for the CPU 1. An operation section 6 selects magnification consecutive shot and sets an original size and magnification, then a picture on an original is read while being divided into plural numbers and a large sized magnified picture is recorded on plural papers separately. When recording paper of the same size as the original runs short during copying, the supplement of recording paper is urged by the indication of an operation section 6. Even when the supplemented recording paper has a different size, the copying continues based on the paper size at the start of copying.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine having a so-called enlarged continuous shooting function.

[0002]

2. Description of the Related Art Conventionally, a magnified continuous photographing function for reproducing an image larger than one sheet by reading one original in a divided manner, enlarging each divided image and outputting it on a plurality of sheets. There is provided a copying apparatus including the.

[0003]

By the way, if the size of paper being used runs out in the middle of the copying operation by the above-mentioned continuous enlargement function, conventionally, copying is resumed unless the same size of paper is replenished. I can't. For this reason, if there is only another size of paper, you have to either give up this copy in the middle, or restart the copy work from the beginning, and the copy up to the middle becomes useless, and the work is troublesome. There was a drawback that it was inefficient.

According to the present invention, even when the size of the paper being used disappears during the enlarged continuous copying operation and the same size paper cannot be replenished, the continuous copying operation can be easily continued. It is an object of the present invention to provide a copying apparatus capable of avoiding wasteful copying of the above and improving workability.

[0005]

SUMMARY OF THE INVENTION The present invention has a copy function for reproducing a large image by dividing a single original into a plurality of areas, reading the original, and outputting the original distributed on a plurality of sheets. In the copying apparatus, when the paper size is changed during the copying operation, the copying operation is controlled based on the paper size at the start of copying.

[0006]

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

The copying apparatus of this embodiment has a construction in which one paper cassette is mounted. Whether or not a paper cassette of a desired size is mounted is determined by feeding the recording paper at the time of copying and then carrying the paper. It is designed to be identified by a sensor (not shown) on the road.

Each part of FIG. 1 will be described below. First, the CPU 1 controls the entire copying apparatus, and the ROM 2 stores a control program and fixed data for the CPU 1 to execute various processes, and a RAM.
Reference numeral 3 is used as a work area of the CPU 1 or the like.

The first input / output unit (i / o1) 4 mainly serves as an interface with the exposure lamp 15, the main scanning motor 16 and the sub-scanning motor 17 of the scanner, and the second input / output unit (i / o1) 4 The (i / o2) 5 mainly serves as an interface with the main scanning motor 18 and the sub-scanning motor 19 of the printer.

Further, the operation unit 6 includes an input key group such as a start key, a stop key and a ten-key pad for an operator to perform various key input operations and an LC for displaying various information.
D etc. are provided.

Further, in this copying apparatus, a color CCD 7 for reading an image on an original by separating it into RGB in the scanner and an A / D converter 8 for converting an analog signal read by the color CCD 7 into digital data.
An image processing circuit 9 for adjusting the tint of the digital data from the A / D converter 8 and converting the luminance signal into a density signal, and the color components based on the signals from the image processing circuit 9. A binarization circuit 10 for generating binary data for determining the presence or absence of each pixel dot, and this binarization circuit 10
Print heads 11 to 14 for printing CMYK dots on a sheet based on the output of the above.

In this copying apparatus, the enlarged continuous shooting is selected from the operation unit 6 and the original size and the magnification are set so that the image on the original is divided into a plurality of areas and read.
It has the function of recording large magnified images on multiple sheets of paper.

FIG. 2 is a schematic diagram for explaining a specific example of such enlarged continuous shooting.

This example shows a case in which the original 1 is enlarged to 200% and is output on a recording sheet of the same size as the original 1. That is, when the original 1 is enlarged to 200%, the area of the image is quadrupled, so that the original 1 is divided into four sheets and outputted. Therefore, as shown in the figure, the original 1 is divided into four areas 1 to 4, and the image in each area is divided into four sheets (copy 1).
-Distribute to the copy 4) and output.

In the present embodiment, when the recording paper of the same size as the original 1 runs out during the enlarged continuous shooting, the display of the operation unit 6 or the like prompts the user to replenish the recording paper.

When a recording paper of the same size is mounted, the continuous enlarged copying is continued as in the conventional case, but when a recording paper of a size larger than the size of the first recording paper is mounted. , Continuously shoot the rest of the image on the paper as it is.

When a recording paper of a size smaller than the size of the first recording paper is loaded, only the area which can be accommodated in the paper is read and recorded. As described above, in the present embodiment, in order to deal with the case where there is only a small size recording sheet, the continuous enlargement shooting is not stopped but
The image output is ensured as much as possible.

In the example shown in FIG. 2, there is a recording sheet of the same size as the original 1 for the copies 1 to 3, but
When I tried to make a copy of the 4th sheet,
It shows a case where the recording paper of the same size has run out. In this example, since a recording sheet of a size larger than the original 1 is mounted, the copy 4 is made on this large-sized recording sheet.

When four copies are completed in this way, unnecessary portions are cut out from the fourth copy 4, so that the sizes of the other copies 1 to 3 can be made uniform, and the continuous enlargement of a desired size can be performed. Obtainable.

Hereinafter, the operation of such enlarged continuous shooting will be described more specifically based on a flowchart.

FIG. 3 is a flowchart showing the basic operation of enlarged continuous shooting.

First, in the case of performing enlarged continuous shooting, the operation unit 6
After selecting the enlarged continuous shooting function, the document size is designated (S1). Next, after setting the required magnification (S2), the start key is pressed (S3).

As a result, the CPU 1 shifts to the copy operation and starts feeding the recording paper (S4). The presence or absence of the recording paper and the size of the recording paper are detected by the sensor in the transport path as described above. Here, when the recording paper is not set (S5), the operation unit 6 displays that there is no paper (S7), and after the paper is replenished, the start key is pressed (S).
Wait for 3) and restart the operation.

Next, when a recording sheet is detected, the sheet size is determined (S6), and it is determined whether it is the first copy (S8). If it is the first copy, the steps S1 and S2 are performed. The number and size of sheets to be enlarged and continuously shot are calculated from the designated document size and magnification, and the calculation result is displayed on the operation unit 6 (S9).

Then, the reading area is calculated based on the calculation result and the paper size detected in S6 (S10). At this time, if the paper size is a size to be enlarged and continuously shot, or is larger than the size to be enlarged and continuously shot, copying is performed according to the reading area that is normally calculated based on the document size (S11). If the size is smaller than the size for continuous enlargement, the reading area is calculated based on the paper size, and copying is performed according to the calculated value (S11).

FIG. 4 is a flow chart showing the operation of calculating the reading area in S10.

First, the original size designated in S1 is divided by the number of copies calculated in S9 to calculate the area length a to be read in the first copy (S21). Next, the number of copies completed up to the present time is multiplied by the area length a to calculate the reading start position x (S22). Further, the print area length b is calculated by multiplying the print area length a by the magnification specified in S2 (S23).

Next, the print area length b is compared with the fed paper size (S24). If the paper size is equal to or larger than the area length b, the start position x, the reading area length a and the print area are compared. Confirm the length b and copy operation (S
The process moves to 11) (S26 to S28).

If the paper size is smaller than the area length b in S24, the paper size is divided by the magnification to calculate a new reading area length a (S25), and the print area length b is determined based on this value. The copy operation (S11) (S26 to S28). In this case also, the reading start position x is common.

The copying operation is repeated in this manner, and when the copying for the number of sheets obtained in S9 is completed (S9)
12) and the copy operation is completed.

Although one embodiment of the present invention has been described above, the present invention can be further modified.

For example, in the above-described embodiment, when the paper becomes small, the printable amount of paper is copied. However, when the print area length b is larger than the paper size when the reading area is calculated. May display a warning and determine whether to execute copying with the same paper or reload the correct paper. In addition,
Correct paper means not only the size equal to the area length b,
Including large size. If you do this,
Even if a small sheet is loaded by mistake, it is possible to prompt the user to make a proper copy by exchanging the sheet.

Further, when it is found that the print area length b is larger than the paper size, the paper may be automatically discharged, a warning may be displayed, and the process may return to the copy key waiting in S3. That is, in this case, it is possible to continue the enlarged continuous shooting by reloading the paper.

Further, when it is found that the print area length b is larger than the paper size, the paper may be automatically discharged, a warning may be displayed, and the initial state may be returned. In this case, the enlarged continuous shooting is restarted from the beginning.

Further, by calculating the number of copies and the size in S9 while considering the remaining area for each copy, for example, as shown in FIG. 5, when copying four copies, the paper size is changed. Thus, it is possible to provide a function of collectively copying the third and fourth sheets into one sheet.

Further, in the above-mentioned embodiment, the copying machine having a structure in which one paper cassette is mounted has been described. However, even in a copying machine in which a plurality of paper cassettes are mounted and a function of detecting a paper size is provided for each cassette. The invention can be applied.

In this case, if the recording paper of an appropriate size set from the original size and the magnification is lost in the middle of the enlarged continuous shooting, the warning of no paper is displayed in the same manner as in the above embodiments, and It is also possible to select a large size sheet in another cassette and continue the enlarged continuous shooting according to the user's judgment based on the above.

[0038]

As described above, according to the present invention,
If the paper size is changed during the copy operation by enlarged continuous shooting, the copy operation is controlled based on the paper size at the start of copying. Even if the same size of paper cannot be replenished, the copying operation can be easily continued, and it is possible to avoid waste of copying up to the middle and to improve workability.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating a specific example of enlarged continuous shooting in the above-described embodiment.

FIG. 3 is a flowchart showing an enlarged continuous shooting operation in the above embodiment.

FIG. 4 is a flow chart showing an operation of calculating a reading area at the time of enlarged continuous shooting in the above embodiment.

FIG. 5 is a schematic diagram illustrating a specific example of enlarged continuous shooting according to another embodiment of the present invention.

[Explanation of symbols]

 1 ... CPU, 2 ... ROM, 3 ... RAM, 4, 5 ... Input / output unit, 6 ... Operation unit, 7 ... Color CCD, 8 ... A / D converter, 9 ... Image processing circuit, 10 ... Binarization circuit , 11 to 14 ... Print head, 15 ... Exposure lamp, 16 ... Scanner main scanning motor, 17 ... Scanner sub-scanning motor, 18 ... Printer main scanning motor, 19 ... Printer sub-scanning motor.

Claims (1)

[Claims] 1. A copying apparatus having a copy function for reproducing a large image by dividing one document into a plurality of areas, reading the divided document, and outputting the divided document on a plurality of sheets. If the paper size changes during the process,
A copying machine characterized by controlling a copying operation based on a paper size at the start of copying.