JP2872261B2 - Copier - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying apparatus that reads a document image and records the image on a recording material.

[Conventional technology]

2. Description of the Related Art Conventionally, a copying apparatus generally used, as typified by an electrophotographic copying machine, directly projects an optical image obtained by optically reading a document onto a photoconductor and develops the image to form an image. Most methods are used.

Recently, a method of converting information read from a document by an image reading device into an electric signal, sending the signal to an image output device, and forming an image on a recording medium in accordance with the image information sent by the image output device. A device has been proposed.

In the copying apparatus of the above method, an image reading device (hereinafter, referred to as a "reader") and an image output device (hereinafter, referred to as a "printer") may be connected by a signal line. Even if it is arranged, it is possible to exhibit the function as a copying apparatus. Also, since the image information of the original is converted into an electric signal, the degree of freedom in image processing such as trimming or image synthesis is significantly higher than that of a normal copying apparatus.

A one-dimensional image sensor that reads a plurality of pixels in a first direction; and a recording head that records a plurality of pixels in the first direction based on image data from the image sensor. By moving the recording position of the head in the main scanning direction perpendicular to the first direction, and moving the reading position of the image sensor and the recording position of the recording head in the sub-scanning direction along the first direction. 2. Description of the Related Art A copying apparatus for copying a document image is known.

In a copying apparatus having such a configuration, when copying an original image by changing the magnification of the original image at a desired magnification, as shown in FIG. The reading range of the document is determined in consideration of the magnification. That is, as shown in FIG. 7, assuming that the maximum number of pixels that the recording head can record in the sub-scanning direction is 100, the range in which the original is read by the one-dimensional image sensor is 100 pixels at the same magnification (100%) and 200% enlarged. The time is 50 pixels, 50% reduction is 200 pixels, and 75% reduction is 150 pixels.

[Problems to be solved by the invention]

As described above, in the above-described conventional example, for example, when an attempt is made to enable 50% copying, an image reading image having a length corresponding to reading an original twice as long as the recording head can be printed in one main scan. A sensor is required. Also, 50
When an image sensor is prepared in consideration of% reduction, 100
At the time of% copying, only half of the image reading sensor needs to be used, and at the time of 200% copying, only 1/4 of the image reading sensor needs to be used. Therefore, the image reading sensor is not effectively used.

Also, if the reading image sensor is lengthened to support a large number of reduction ratios, the "yield" of the sensor will deteriorate, and more drive circuit memory for the image reading sensor will be required, increasing costs and increasing the size of the device. There was a disadvantage.

[Means for solving the problem]

The present invention has been made in view of the above points, and reads a document image by a predetermined width using a line sensor that reads a plurality of pixels by a plurality of light receiving elements arranged on a line. In a copying apparatus that records a document image on a recording sheet by a predetermined width using a print head that records a plurality of pixels by a printing element, a reading position of the line sensor is set to a main position perpendicular to an arrangement direction of a plurality of light receiving elements. First moving means moving in the scanning direction and moving in the sub-main scanning direction along the arrangement direction of the plurality of light receiving elements; and main scanning perpendicular to the arrangement direction of the plurality of printing elements by changing the recording position of the print head. Moving means moving in a sub-scanning direction along a direction in which a plurality of printing elements are arranged, and the line moving by the first and second moving means according to a set magnification. And control means for controlling the movement of the reading position of the sensor and the recording position of the print head, wherein the control means is arranged such that, when the set magnification is equal to or enlarged, the reading position of the line sensor is moved in the sub-scanning direction. The amount of movement of the print head is set to the number of pixels obtained by dividing the maximum number of print pixels by the print head by a set magnification, and the amount of movement of the print position of the print head in the sub-scanning direction is determined by the print head. When the maximum number of recording pixels is set, and when the set magnification is reduced, the amount of movement of the reading position of the line sensor in the sub-scanning direction is set to the maximum number of reading pixels of the line sensor, and the print head The moving amount of the recording position in the sub-scanning direction is set to the number of pixels obtained by multiplying the maximum reading pixel number of the line sensor by a set magnification, and based on the set moving amount, And the second
An object of the present invention is to provide a copying apparatus that controls movement of a reading position of the line sensor and a recording position of the print head in a sub-scanning direction by a moving unit.

〔Example〕

Hereinafter, the present invention will be described using preferred embodiments.

FIG. 1 is an explanatory sectional view of a copying apparatus in which a reader and a printer are combined.

In FIG. 1, the left side forms a front surface as a copying apparatus. Further, in this embodiment, the printing head by the liquid ejection is used.
The case where 226 is used will be described.

The print head 226 has, for example, four ink jet arrays C, M, Y, and K in which 100 nozzles arranged in a 63.5 μm pitch are arranged in a line, and is a single-color or full-color image having a width of 6.35 mm at a time. It is designed to print.

Therefore, when printing on a recording medium (plain paper or plastic sheet, etc., hereafter referred to as “recording paper”), the recording paper is transported by the transport system and stopped at a predetermined position to print 6.35 mm width. Then, the recording paper is conveyed and stopped for 6.35 mm, and printing with a 6.35 mm width is performed again. An image is formed on a recording sheet by repeating the above operation.

In the printer 202, the direction in which the print head 226 moves is defined as the main scanning direction, and the direction in which the recording paper is conveyed (which is also the direction in which the ink jet nozzles are arranged) is defined as the sub-scanning direction. Therefore, in FIG. 1, the main scanning direction is a direction from the near side to the depth side with respect to the figure, and the sub-scanning direction is a horizontal direction.

The reading of the original by the reader 201 is repeated by a line sensor in a 6.35 mm width corresponding to the print width of the printer 202. This reading direction is defined as the main scanning direction, and the moving direction for the next reading is defined as the sub-scanning direction. Therefore, in FIG. 1, the main scanning direction is the left-right direction with respect to the drawing, and the sub-scanning direction is the near side.
It becomes the back side direction.

The reader 201 places a document (not shown) on a platen glass 203.
It is placed on the main scanning carriage 204 and illuminated by a lamp 205 provided on the main scanning carriage 204, and the reflected light from the original is guided to a CCD sensor 207 including a plurality of light receiving elements via a lens array 206, and is converted into an electric signal. And this electric signal is a signal cable
The signal is sent to the signal processor 216 via the
6 is configured to output to the outside.

Therefore, the main scanning carriage 204 is provided with a lamp 205, a lens array 206, and a CCD sensor 207 at predetermined positions.

The main scanning carriage 204 is slidably fitted on the main scanning rail 208 and is connected to a main scanning belt 210 for transmitting rotation of a main scanning motor 209 by an engaging member (not shown). Therefore, the main scanning carriage 204 is configured to be able to reciprocate in the main scanning direction along the main scanning rail 208 as the main scanning motor 209 rotates.

The main scanning rail 208, the main scanning motor 209, etc.
Fixed to 11.

The sub-scanning table 211 is slidably fitted to the sub-scanning rail 212, and is connected to a sub-scanning belt 214 that transmits the rotation of the sub-scanning motor 213 by an engaging member (not shown).
Accordingly, the sub-scanning table 211 is configured to be able to reciprocate in the sub-scanning direction along the sub-scanning rail 212 with the rotation of the sub-scanning motor 213. When the sub-scanning table 211 moves in the sub-scanning direction, the main scanning carriage 204 provided in the sub-scanning table 211 is moved in the sub-scanning direction, and the original is read in the sub-scanning direction.

One end of the signal cable 215 is connected to the sub-scanning table 211, and the other end is connected to the signal processor 216. A drive signal for the main scanning motor 209 or an image signal from the CCD sensor 207 is transmitted to the signal processor 216 following the movement of the sub-scanning table 211.

Below the printer 202, a cassette 219 containing a plurality of recording papers is detachably mounted. Then, recording paper is supplied from the cassette 219 to the printer 202 by a paper feed roller 220 driven by a power source such as a motor (not shown). This recording paper is transported in the sub-scanning direction by a transport roller pair 221, 222 driven by a drive source (not shown),
Printing is performed by a print head 226 provided between the roller pair 221 and 222.

The print head 226 is formed integrally with the ink tank 229, and is detachably attached to the main scanning carriage 223. The main scanning carriage 223 is slidably fitted on the main scanning rail 227. Further, the main scanning carriage 223
Is connected to a belt 225 for transmitting the rotation of the main scanning motor 224 by an engaging member (not shown). Therefore, the main scanning carriage 223 is configured to be able to reciprocate in the main scanning direction with the rotation of the main scanning motor 224.

The sub-scan in the printer 202 is performed by transporting the recording paper by a pair of transport rollers 221 and 222 every 6.35 mm (at the same magnification).

In the figure, reference numeral 228 denotes a front door provided on the printer 202 so as to be rotatable around a pin 230, and 231 denotes a power supply.

The reader 201 and the printer 202 are electrically connected by a signal line (not shown), and sends image data read by the reader 201 to the printer 202 via the signal line,
In the printer 202, the printhead 226 is driven in accordance with the image data to form an image on recording paper, thereby exhibiting a function as a copying apparatus.

In the copying machine configured as described above, the reader 201 is formed in a hook shape having a protruding portion A on the lower rear side. On the lower side of the overhang A, a cassette containing recording paper
A notch 232 for mounting the 219 in the printer 202 is formed. A plurality of rollers 218 serving as moving members are rotatably attached to the bottom surface 233 of the overhang portion A. The roller 218 is in contact with, for example, a table B for mounting the copying apparatus.

The overhanging section A includes a signal processor 216 and a sub-scanning motor.
213 and electrical components such as a power supply (not shown) are stored. Therefore, the upper portion of the reader 201 is formed as a reading section C in which a sub-scanning table 211 for main scanning and sub-scanning of a main scanning carriage 204 to which an optical system such as a lamp 205, a lens array 206, and a light receiving element 207 is attached is housed. Have been.

At a predetermined position on the lower surface of the reading unit C, a shoe 217 serving as a sliding member is fixed. This show 217 is a printer 202
And functions as a bearing when the reader 201 and the printer 202 move relative to each other.

By forming the leader 201 into a hook shape, it is possible to form a rectangular parallelepiped concave portion D below the leader 210.

The printer 202 has a rectangular parallelepiped shape substantially equal to the shape of the concave portion D formed below the reader 201. The printer 202 is accommodated in a concave portion D formed in the reader 201, and both are electrically connected to each other to form a copying apparatus. For this reason, the combined copying apparatus has a rectangular parallelepiped shape as a whole, and can exhibit a compact shape without wasted space.

In the above combination, the reader 201 is in contact with the upper surface of the printer 202 by the shower 217 and is in contact with the table B by the rollers 218. Therefore, the printer 202
When the print head 226 is replaced, or when a paper jam occurs, this operation is performed by moving the reader 201 to expose the printer 202 from the concave portion D and opening the front door 228. I can do it.

At this time, the leader 201 can move smoothly by the action of the shoe 217 and the roller 218.

FIG. 2 (A) is a view of the reader section viewed from above, and FIG.
Reference numeral 22 denotes a substrate of the reader unit. Reference numeral 22 denotes a document. Reference numeral 207 denotes a CCD sensor that reads the document 22 and converts the information of the document into R, G, and B image signals for 100 pixels. Reference numeral 2 denotes a main scanning reference of the reader. Photointerrupter 3 for detecting the position, 3 a photointerrupter for detecting the reference position of the sub-scan of the reader, 209 a stepping motor for moving the CCD sensor 207 in the main scanning direction, 210
Is a belt for connecting the CCD sensor 207 and the motor 209, 6 is a pulley and a pulley shaft for applying tension to the belt 210, 211 is a sub-scanning table on which the main scanning portion of the reader is mounted, 214 is a sub-scanning table 211 and the motor 213. Belt for tying, 213 is sub-scanning table 2
A stepping motor 11 moves in the sub-scanning direction.

FIG. 2B is a view of the printer unit as viewed from above.
4 is a substrate of a printer unit, 10 is a photo interrupter for detecting the reference position of the main scanning of the printer, 11 is a photo interrupter for detecting the presence / absence of paper and the reference position of paper, and 226 is C, M. , Y, K, a printing head having 100 nozzles each, 13 is a pulley and a pulley shaft for applying tension to the belt 225, 225 is a printing head 226 and a motor 224 for printing.
224, a stepping motor for moving the print head 226 in the main scanning direction of the printer, 222, a roller for holding and conveying the leading end of the recording paper 23, and 221 for the recording paper 2
3, a roller for holding and conveying the rear end, 18 is a belt connecting the roller 222 and the motor 20, 19 is a belt connecting the roller 221 and the motor 20, and 20 is a step for moving the recording paper 23 in the sub-scanning direction of the printer. Ping motor.

FIG. 3 is a block diagram showing a circuit configuration for controlling the main and sub-scanning operations of the reader and the printer. Reference numeral 9 denotes an operation unit provided on the upper surface of the reader unit. The number of copies is set.

24 is a CPU for controlling the drive positions of the main and sub motors 209, 213, 224 and 20 of the reader and printer in accordance with the outputs of the position detecting sensors 2, 3, 10 and 11. 25 to 28 are main and sub motors of the reader and printer in accordance with the instructions of the CPU 24. Motor driver that supplies power to the

FIG. 4A is a circuit block for enlarging / reducing the image data read by the reader in the sub-scanning direction. Reference numeral 29 denotes a write address for storing the image data in the image memory 32. Block 30, a block for generating a read address when image data is read from the image memory 32, and 31 for selecting an address of the RAM 32, either block 29 or block 30, depending on the read / write selection state of 33. Selector to do
32 is a memory for storing image data, 33 is a block for controlling a signal for reading / writing image data to / from the image memory 32, and 34 is a block for reading / writing the image data from the block 33.
This is a selector for supplying to the printer selected according to the selection state of the light.

FIG. 4 shows a method of reducing and enlarging an image (pixel unit) read by the reader in the sub-scanning direction. For example, 50
At the time of% reduction, when writing the input image data shown in FIG. 4 (B) to the image memory 32, for example, R0 in the pixel is written to address 0 of the image memory 32, G0 is written to address 1, and B0 is written to address 2. However, R1, G1, and B1 of the pixel 1 are not written. Then, R2 of image 2 is written to address 3, G2 is written to address 4, and B2 is written to address 5. Thus, the input image data is written into the image memory 32. Then, when an output image is obtained, image data corresponding to the reduction (50%) shown in FIG. 4 (C) is obtained by sequentially reading from the address 0 of the image memory 32.

On the other hand, at the time of enlargement, the input image data shown in FIG. 4B is sequentially written from address 0 of the image memory 32. Then, when obtaining the output image, from the address 0 of the image memory 32
By reading R0, reading G0 from address 1, reading B0 from address 2, and then reading address 2 from address 0, image data of R0, G0, B0 is obtained. Next, the address of the image memory 32 is moved to address 3, R1 is read, and the same processing is repeated thereafter to obtain image data corresponding to the enlargement (200%) shown in FIG. 4 (C).

As described above, in the sub-scanning direction, the original image can be copied while being enlarged / reduced to a desired magnification. The main scanning direction is achieved by changing the moving speed of the CCD sensor 207 in the main scanning direction according to the magnification.

Next, in the above configuration, an example in which the image reading range and the printing range have a maximum of 100 pixels in one main scan will be described.
The operation will be described below with reference to the flowchart of FIG.

First, in F-1, when the copy button of the operation unit 9 is pressed and copying is started, the reading CCD sensor 207 of the reader is moved to the main scanning and sub-scanning reference positions (main scanning position sensor).
2, the position where the sub-scanning position sensor 3 is in the detection state). That is, the main scanning motor 209 and the sub-scanning motor 2 of the reader
The CPU 24 applies a signal from the CPU 24 to the motor drivers 25 and 26 so that the motor 13 rotates, moves the motor driver to the reference position, and proceeds to F-2.

In F-2, the print head 226 of the printer is moved to the sub-scanning reference position of the printer (the point where the writing head of the printer crosses the sub-scanning position sensor 10). That is,
The CPU 24 applies a signal to the motor driver 27 to
Is rotated and moved to the reference position. Next, the motor 20 is driven to feed the recording paper 23, and the paper feed roller 221 is rotated until the recording paper crosses the paper detection sensor 11. After the paper is detected by the paper detection sensor 11, the recording paper is further
23 is fed by a fixed amount, the recording paper is set at the position indicated by the dotted line in FIG. The paper feed rollers 222,
Reference numeral 221 denotes a recording paper as described above by rotating the paper feed (main scanning) motor 20 of the printer via the belts 18 and 19.
Transport 23. The main scanning motor 20 is rotated by applying a signal from the CPU 24 to the motor driver 28.

In F-3, the copy magnification previously set in percent by the operation unit 9 before the copy is started is reduced copy (less than 100%), equal size copy (100%), or enlarged copy (more than 100%). Then, the process proceeds to F-10 at the time of reduced copy, and proceeds to F-4 at the time of equal-size copy and enlargement copy, to execute the respective processes.

In F-4, the CPU performs the following processing based on the maximum writing range (100 pixels each for cyan, magenta, yellow, and black) in the sub-scanning direction of the printer.
24, and proceed to F-5.

In F-5, the number of pixels in the reading range of the reader is obtained by dividing the maximum number of pixels in the writing range of the printer by the magnification and multiplying the result by 100.

FIG. 6 is a diagram showing the relationship between the reading range of the reader and the printing range. For example, for 200% of FIG. When the magnification is 200%, a range pixel number 50 necessary for reading by the reader is obtained, and the process proceeds to F-6.

In F-6, the reader and the printer are respectively scanned one scan in the main scanning direction, and the information of the document 22 is read by the reader.
The read information is printed on the recording paper 23, and the process proceeds to F-7.

In F-7, it is determined whether the scan in the main scanning direction performed in F-6 is the final main scan of the copy. If the scan is in the final main scan, the process proceeds to F-16 to end the copy. On the other hand, if it is not the final main scanning scan, the process proceeds to F-8.

In F-8, the position of the CCD sensor 207 of the reader is calculated by the number of pixels obtained by the calculation in F-5 (for example, 50 at 200%).
It is moved in the sub-scanning direction, and the reading sensor is moved to a position where an image is read in the next main scanning of the reader. That is, a signal is applied from the CPU 24 to the motor driver 26, the sub-scanning drive motor 213 of the reader is rotated the required number of times, and the process proceeds to F-9.

In F-9, the position of the recording paper of the printer is moved by 100 pixels in the sub-scanning direction, and the print head 226 is moved to the position where the image is written in the next main scanning of the printer.
The signal from the PU 24 is applied to the motor driver 28, and the sub-scanning drive motor 20 of the printer is rotated to return to F-6.
Steps -6 to F-9 are repeated as necessary.

On the other hand, if the reduction copy has been set, F-
In 10, the following processing is performed for the maximum reading range of the reader in the sub-scanning direction (100 pixels each for red, green, and blue)
Is stored in the CPU 24 so as to operate on the basis of
Proceed to.

In F-11, the maximum number of pixels in the reading range of the reader is multiplied by the magnification, and the result is divided by 100 to obtain the number of pixels in the writing range of the printer. For example, for 50% of FIG. When the reduction is 50%, the number of pixels in the range in which the writing is performed by the printer is obtained as 50, and for 75%, Thus, when the reduction is 75%, the number of ranges 75 in which writing by the printer is performed is obtained. Then, the process proceeds to F-12.

In F-12, the reader and the printer are each scanned by one in the main scanning direction, and the information of the document 22 is read by the reader.
The information read on the recording paper 23 is printed, and the process proceeds to F-13.

In F-13, it is determined whether the scan in the main scanning direction performed in F-12 is the last main scan of the copy. If the scan is the last main scan, the process proceeds to F-16 to end the copy. On the other hand, when it is not the final main scanning scan, the process proceeds to F-14.

In F-14, the reading CCD sensor 207 of the reader is used.
Is moved in the sub-scanning direction by 100 pixels, and the reading CCD sensor 207 is moved to a position where an image is read in the next main scanning of the reader. That is, a signal is applied from the CPU 24 to the motor driver 26, and the sub-scanning drive motor 213 of the reader is rotated the required number of times, and the process proceeds to F-15.

In F-15, the position of the recording paper of the printer is moved in the sub-scanning direction by the number of pixels (for example, 50 at 50%) obtained by the calculation of F-11, and the image is written in the next main scanning of the printer. Move the print head to the position. That is, a signal is applied from the CPU 24 to the motor driver 28, the sub-scanning drive motor 20 of the printer is rotated by the required number of times, and the process returns to F-12, where the processing F
Repeat -12 to F-15 as necessary.

As described above, the movement of the reading position and the printing position in the sub-scanning direction in the reader and the printer is controlled according to the magnification.

FIG. 8 shows a range WR of the maximum number of pixels of a document from which an image can be read in one scan in the main scanning direction of the reader. Also, the tenth
The figure shows a range WP of the maximum number of pixels in which an image can be printed in one scan in the main scanning direction of the printer.

FIGS. 10 and 11 show the paper feed of the printer at the time of 50% reduction (printing is performed in units of 50 pixels). That is, at 50%, the paper width corresponding to 50 pixels is moved.

In this embodiment, the copying apparatus has been described. However, a similar effect can be obtained in a device that reads and outputs an image (for example, a facsimile device).

Further, in this embodiment, an example has been described in which color reading is performed and color recording is performed, but it goes without saying that the present invention can be applied to an image copying apparatus other than color, such as black and white.

In this embodiment, the CCD sensor 207 is moved in both the main scanning direction and the sub scanning direction. However, the original document may be moved in the main scanning direction or the sub scanning direction. Alternatively, the print head 226 may be moved in both the main and sub scanning directions.

〔The invention's effect〕

As described above, according to the present invention, when the set magnification is the same magnification or enlargement, the moving amount of the reading position of the line sensor in the sub-scanning direction is divided by the maximum recording pixel number by the print head by the set magnification. And the amount of movement of the print head recording position in the sub-scanning direction,
When the printhead is set to the maximum number of recording pixels, and when the set magnification is reduced, the amount of movement of the reading position of the line sensor in the sub-scanning direction is set to the maximum number of reading pixels of the line sensor. The amount of movement of the recording position in the sub-scanning direction is set to the number of pixels obtained by multiplying the maximum number of read pixels of the line sensor by the set magnification. Based on the set amount of movement, the read position of the line sensor and printing Since the movement of the recording position of the head in the sub-scanning direction is controlled, the line sensor can be configured with a small number of pixels, thereby reducing the cost of the line sensor, reducing the failure rate of the line sensor, downsizing the device, and reducing the size of the line sensor. The effect of shortening the time for adjusting the mounting position of the camera can be obtained, and the line sensor and the print head can be used effectively, and efficient copying can be performed at various magnifications. Work is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram of a copying apparatus to which the present invention is applied, FIGS. 2A and 2B are block diagrams of a reader unit and a printer unit, and FIG. 3 is a circuit for controlling operation of the reader and printer. 4 (A) to 4 (C) are diagrams showing a configuration for a scaling operation of image data, FIG. 5 is a flow chart showing an operation procedure of a CPU, and FIGS. FIGS. 8 and 9 are diagrams showing the maximum number of pixels for reading or recording by a reader and a printer, and FIGS. 10 and 11 are diagrams showing the transport state of recording paper. 201 is a reader, 202 is a printer, 207 is a CCD sensor,
226 is a print head, 24 is a CPU, 209, 213, 224 and 20 are motors.

Claims (3)

(57) [Claims] An original image is read by a predetermined width using a line sensor that reads a plurality of pixels by a plurality of light receiving elements arranged on a line, and a plurality of pixels are recorded by a plurality of printing elements arranged on a line. In a copying apparatus for recording a document image on a recording sheet by a predetermined width using a print head, a reading position of the line sensor is moved in a main scanning direction perpendicular to a direction in which a plurality of light receiving elements are arranged, and a plurality of light receptions are performed. First moving means for moving in the sub-scanning direction along the arrangement direction of the elements, and moving the recording position of the print head in a main scanning direction perpendicular to the arrangement direction of the plurality of printing elements, and A second moving unit that moves in the sub-scanning direction along the arrangement direction; and a reading position of the line sensor by the first and second moving units according to a set magnification. Control means for controlling the movement of the recording position of the character head, the control means, when the set magnification is the same magnification or enlargement, the amount of movement of the reading position of the line sensor in the sub-scanning direction, Set the number of pixels obtained by dividing the maximum number of pixels recorded by the print head by the set magnification, and set the amount of movement of the recording position of the print head in the sub-scanning direction to the maximum number of pixels recorded by the print head. When the set magnification is reduced, the moving amount of the reading position of the line sensor in the sub-scanning direction is set to the maximum number of read pixels of the line sensor, and the sub-scanning of the recording position of the print head is performed. The amount of movement in the direction is set to the number of pixels obtained by multiplying the maximum number of read pixels of the line sensor by a set magnification, and based on the set amount of movement, the amount of movement by the first and second moving means is determined. A copying machine and controls the movement of the sub-scanning direction of the reading position and a recording position of the print head of the line sensor. 2. The copying apparatus according to claim 1, wherein the set magnification is set in a percentage unit, and when the set magnification is 100% or more, the maximum number of recording pixels by the print head is set by the set magnification. Wherein the number of pixels obtained by multiplying the result by 100 is obtained as the amount of movement of the reading position of the line sensor in the sub-scanning direction. 3. The copying apparatus according to claim 1, wherein the set magnification is set in units of percent, and when the set magnification is less than 100%, the set magnification is set to the maximum number of read pixels of the line sensor. A copying apparatus wherein the number of pixels obtained by multiplying the result and dividing the result by 100 is used as an amount of movement of the recording position of the print head in the sub-scanning direction.