JPH0596796A - Method and device for recording - Google Patents

Abstract

PURPOSE:To obtain recording method and device in which a test pattern printed on recording paper is read, and a line feed amount of a recording medium can be adjusted by a line feed amount correction value calculated based on the read data. CONSTITUTION:A test pattern is recorded on a recording medium by a printer 2. The recording medium with the test pattern recorded thereon is photoelectrically read by a reading part 3, whereby a shift of a line feed amount in the test pattern is detected. Based on the detected shift amount, a recording medium line feed amount correction value is calculated and stored in a correction value memory 68. A recording device is so operated that an image is recorded on a recording medium while a recording medium line feed amount is corrected by controlling a pulse number to be outputted to a paper feed motor 35 on the basis of the correction value stored in the memory 68.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording method and apparatus for conveying a recording medium for recording.

[0002]

2. Description of the Related Art In recent years, computer devices, particularly personal computers and workstations, have become increasingly capable of processing image images such as photographs. In this type of device, a document reading unit (scanner) for reading a document, an image printer for printing an image, and the like can be connected, and the image data read by the scanner can be printed by the image printer. Has been done. As such an image printer, an inkjet printer that applies thermal energy to eject ink droplets is often used because of its relatively small size, low cost, and the fact that it can record on plain paper and has a low running cost. ing. One such inkjet printer is
An inkjet head (recording head) having a recording width of about 4 mm corresponding to a character width is provided, and an image is printed on the recording paper by reciprocal scanning of the inkjet head and conveyance of the recording paper.

[0003]

However, as described above, for example, when the recording is performed on the recording paper by repeating the scanning recording by the recording head for recording the width of about 4 mm (the recording width of one line), the recording is performed. Depending on the accuracy of the paper feed amount, problems such as gaps between lines and overlapping recording may occur. Therefore,
In order to further improve the accuracy of such paper feeding, it is necessary to improve the parts accuracy and the assembly accuracy of the recording paper transport mechanism, and the inspection and management for that purpose are further required. Therefore, if the paper feeding accuracy is increased, the cost of the product will increase. Therefore, in many cases, in order to make the unevenness between lines as inconspicuous as possible, the recording is positively performed so that the spaces between the lines are overlapped with each other so that at least a gap (white stripe) is not generated between the lines. However, if recording is performed such that the lines are overlapped with each other in this manner, stripes or the like are generated in each line of the recorded image, and the image quality is deteriorated. In particular, in the part where the halftone image is represented by the area gradation, the deterioration of the image quality is conspicuous,
It was not suitable for printing images such as photographs.

The present invention has been made in view of the above-mentioned conventional example, and reads the test pattern printed on the recording paper, and uses the correction value of the conveyance amount of the recording medium for each line calculated based on the read data. It is an object of the present invention to provide a recording method and apparatus capable of adjusting the carry amount for each row.

[0005]

In order to achieve the above object, the recording apparatus of the present invention has the following configuration. That is, a recording apparatus that records an image on a recording medium based on recording data, and recording means that conveys the recording medium and recording test pattern data on the recording medium while conveying the recording medium by the conveying means. Means, a storage means for reading the recording medium recorded by the recording means, and storing a correction value calculated based on the deviation of the transport amount of each recording medium, and based on the correction value stored in the storage means. And a transport unit that corrects and transports the transport amount of the transport unit.

In order to achieve the above object, the recording method of the present invention comprises the following steps. That is, it is a recording method for recording an image on a recording medium based on recording data, which comprises a step of recording a test pattern on the recording medium and photoelectrically reading the recording medium on which the test pattern is recorded, A detection step of detecting a shift in the feed amount between the rows of the pattern,
A step of calculating a correction value for the carry amount of the recording medium for each row based on the deviation detected by the detecting step; and a step of correcting the carry amount for each row of the recording medium based on the correction value Recording an image on the medium.

[0007]

With the above construction, the test pattern is recorded on the recording medium, and the recording medium on which the test pattern is recorded is photoelectrically read to detect the deviation of the feed amount between the respective test patterns. Then, based on these detected shift amounts, a correction value for the transport amount of the recording medium for each row is calculated,
It operates so as to record an image on the recording medium while correcting the carry amount for each row of the recording medium based on the correction value.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 2 is a block diagram showing a schematic construction of a workstation according to an embodiment of the present invention, and FIG. 1 is a block diagram showing a more detailed construction thereof.

This workstation comprises a host 1, a printer 2 and a reading unit (scanner) 3. The host 1 performs operations such as transmitting the image information read by the reading unit 3 to the outside and incorporating it in a created document. The image data sent from the host 1 is image-formed on the recording paper by the printer 2.

FIG. 3 is an exploded perspective view showing the internal structure of the printer 2.

In FIG. 3, 9 is a head cartridge having an ink jet recording head 91, which will be described later in detail with reference to FIG. 4, 11 is a carriage on which the cartridge 9 is mounted, and the S direction (sub scanning direction) in the drawing is shown. It is scanning back and forth. 13 is a head cartridge 9 and a carriage 11
And 15 is a lever for operating the hook 13. Reference numeral 19 is a support plate that supports an electrical connection portion for the head cartridge 9. Reference numeral 21 is a flexible cable for connecting the electric connection portion and the main body control portion.

Reference numeral 23 is a guide shaft for guiding the carriage 11 in the S direction, and is inserted into a bearing 25 of the carriage 11. Reference numeral 27 is a timing belt to which the carriage 11 is fixed and which transmits power for moving the carriage 11 in the S direction. Pulleys 29A, 29A,
It is suspended on 29B. Here, one pulley 29B
The carriage motor 31 via a transmission mechanism such as a gear.
More driving force is transmitted. As a result, the carriage 11 is rotated by driving the carriage motor 31.
Are reciprocally scanned in the S direction.

Reference numeral 33 denotes a platen roller that regulates the recording surface of a recording medium such as paper (hereinafter also referred to as recording paper) and conveys the recording medium during recording, and is driven to rotate by a paper conveying motor 35. 37 is a paper pan for guiding the recording medium from the side of a paper feed tray (not shown) to the recording position, and 39 is arranged in the middle of the conveying path of the recording medium, and presses the recording medium toward the platen roller 33. , A feed roller for conveying this. Reference numeral 41 denotes a paper discharge roller which is arranged on the downstream side of the recording position on the recording medium conveyance path and discharges the recording medium toward a paper discharge port (not shown). Reference numeral 42 denotes a spur provided corresponding to the paper discharge roller 41, which presses the paper discharge roller 41 via the recording medium and causes the paper discharge roller 41 to convey the recording medium. Reference numeral 43 denotes a release lever for releasing the bias of each of the feed roller 39, the pressing plate 45, and the spur 42 when setting a recording medium.

Reference numeral 45 is a restraint plate for restraining the rise of the recording medium in the vicinity of the recording position and for ensuring a close contact with the platen roller 33. The distance between the ink ejection port forming surface of the recording head 91 and the recording surface of the recording medium is relatively small, and the distance must be strictly controlled so as to avoid contact between the recording medium and the ejection port forming surface. Therefore, it is effective to dispose the pressing plate 45.

Reference numeral 51 denotes a cap formed of an elastic material such as rubber, which is opposed to the ink ejection port forming surface of the recording head 91 at the home position.
It is supported so that it can come into contact with and separate from. The cap 51 is used for protection of the recording head 91 at the time of non-recording, and for ejection recovery processing of the recording head 91. The ejection recovery process is to eject ink from all ejection ports by driving an energy generating element provided inside the ink ejection port and used for ejecting ink.
As a result, a process (preliminary ejection) is performed to remove the cause of ejection failure such as air bubbles and dust, and ink that has become thicker and is no longer suitable for recording. In addition, the ink is forcibly ejected from the ejection port of the recording head 91. It is a process for removing the cause of the ejection failure by discharging the discharge failure.

The reference numeral 53 acts as a suction force for forcibly discharging the ink, and the cap 51 is used for the discharge recovery process by the forced discharge or the discharge recovery process by the preliminary discharge.
It is a pump used for sucking the ink received in the ink. 55 is a waste ink tank for storing the waste ink sucked by the pump 53, and 57 is the pump 5
3 is a tube that connects the waste ink tank 55 to each other.

Reference numeral 59 denotes a blade for wiping the ejection port forming surface of the recording head 91, which is the cartridge 9
It is movably supported between a position that projects toward the (recording head) side and is used for wiping in the course of movement of the recording head, and a retracted position that does not engage with the ejection port forming surface of the recording head 91. Reference numeral 61 denotes a recovery motor for performing the above-described recovery processing, and 63 receives power transmitted from the recovery motor 61 to drive the pump 53 and the cap 51 or the blade 5
9 is a cam device for moving each of the nine.

Next, the details of the head cartridge 9 described above will be described with reference to FIG.

FIG. 4 is a perspective view of a head cartridge used as a recording means of the printer used in this embodiment, which is of a disposable type in which an ink containing portion which is an ink supply source is integrated.

Recording head portion 91 of the cartridge 9
Includes a heater board (not shown) in which an electrothermal conversion element (ejection heater) and wiring such as Au for supplying electric power to the Si substrate are formed on the Si substrate by a film forming technique.

The recording head 91 is provided with a supply tank, and the supply tank receives ink supply from an ink storage section 92 serving as an ink supply source and guides the ink to a common liquid chamber formed by joining a heater board and a top plate. Functions as a sub tank. An absorber for impregnating ink is internally provided in the ink storage portion 92, and the ink storage portion 92 is arranged in the ink tank body. Reference numeral 93 is an atmosphere communication port provided in the lid member for communicating the inside of the cartridge 9 with the atmosphere. A liquid repellent material is arranged inside the atmosphere communication port 93, and thus ink leakage from the atmosphere communication port 93 is prevented.

With the above structure, the ink in the ink storage portion 92 is supplied from the inside of the cartridge 9 into the supply tank constituting the recording head 91, and after passing through the inside,
From the outlet, it flows into the common liquid chamber through an appropriate supply pipe and the ink inlet of the top plate. Then, when the ejection heater is caused to generate heat based on a predetermined recording signal, the ink is ejected from the recording head 91 by the thermal energy, and a desired recorded image is obtained.

Next, with reference to FIG. 5, an example of the arrangement of ink jet nozzles in the recording head 91 will be described.

As shown in FIG. 5, 64 indicated by (64)
The individual nozzles are arranged in a line in a direction orthogonal to the S direction. Here, the distance a between the nozzles is 1/400 inch (= 0.0635 mm), and the nozzle distance is 40
This corresponds to a recording density of 0 dpi. The carriage 1 is driven by the carriage motor 31 shown in FIG.
1 together with the recording head 91 in the direction of arrow S (sub-scanning direction)
By moving to, it is possible to form a two-dimensional image.

The amount of recording paper conveyed by each line by the paper conveying motor 35 corresponds to this nozzle row. That is,
When one row of image data is recorded by 64 nozzles, this recording head 91 is prepared to prepare for recording the next row.
Amount corresponding to 64 dot pitch of, that is, 6/400
The recording paper is conveyed by 4 inches.

The relationship between the drive amount of the carriage motor 31 and the movement amount of the recording head 91 is as follows.
When 1 is driven by 1 pulse, the recording head 91 is set to be conveyed by 1/400 inch (= 0.0635 mm), that is, a distance corresponding to the nozzle interval a. Therefore, when image data is recorded at a recording density of 400 dpi, each time the carriage motor 31 is driven by one pulse,
Ink is ejected from the recording head 91 once to perform recording.

Further, the photo sensor 64 is the carriage 1
1 is a sensor for detecting whether or not it is located at the home position, and is shielded by a light shielding plate (not shown) provided on the lower surface of the carriage 11 to emit a signal.
Based on this signal, the pulse count value of the carriage motor 31 is converted, and when the carriage 11 reaches the home position, the carriage position is reset to 0 pulse.

FIG. 1 is a block diagram showing further details of the printer 2 of the workstation of this embodiment.

Reference numeral 65 denotes a printer controller, which controls each part of the printer 2 for recording based on the image data from the host 1. A head drive circuit 66 controls the voltage applied to each ejection heater corresponding to the 64 nozzles of the recording head 91. 70
Is a pulse counter, which counts the number of drive pulses of the paper transport motor 35. Further, 67 is a memory in which the recording test data is stored, and by a command from the host 1,
The data in the memory 67 is recorded on the recording paper. Reference numeral 68 denotes a memory that stores correction values for paper feeding, and the calculation unit 36
The correction value calculated by is stored. As a result, the printer controller 65 drives the paper conveyance motor 35 in accordance with the correction value stored in the paper feed correction value memory 68.

The memory 69 is a memory for temporarily storing the test data read by the reading unit 3.

Next, the recording test data stored in the test data memory 67 will be described with reference to the recording data examples for testing shown in FIGS.

In FIG. 6, the address at the position corresponding to the left end of the A4 size recording paper is 1x, the address is increased in the right direction (x direction), and the address at the position corresponding to the right end of the recording paper is 3307x. And Further, in the direction (y direction) orthogonal to that, the leading edge address of the recording sheet is 1y and the trailing edge address is 4677y. In such an address map, the position where “1” corresponding to the recorded dot is written is the address 1000.
Addresses 998x to 1002x centered on x and addresses 1008 centered on address 1010x
From x to 1012x, further, in the y direction, recording dots are set in a zigzag manner by 64 dots in the y direction, such as addresses 101y to 164y and addresses 165y to 228y. A total of 70 groups (L1 to L70 in FIG. 7) of such a group of 64 dots are recorded on this recording paper.

As described above, since each address is set corresponding to the A4 size recording sheet in both the x and y directions, if recording is performed according to the address map shown in FIG. 6, as shown in FIG. 70 vertical lines from L1 to L70 are recorded in a zigzag pattern.

In FIG. 7, since L1 is recorded centering on the address 1000x in the x direction, its position is 0.0635 × 1000 = 63.5 (mm) from the left end of the recording paper. Similarly, since the address 101y is the starting point in the y direction, a margin of 6.35 mm from the leading edge of the recording paper is provided for 100 dots, that is, 0.0635 × 100 = 6.35 (mm), and L1 is set.
Will be recorded.

When the recording paper thus recorded is set in the reading unit 3 and the printer check mode is instructed by the host 1, the reading unit 3 reads the original and reads the read image data. Send to host 1. As a result, the host 1 calculates the paper feed correction value in the printer 2 based on this image data, and stores the calculated value in the paper feed correction value memory 68.

Next, a method of calculating the paper feed correction value will be described.

FIG. 8 is an enlarged view of the recording pattern shown in FIG. Here, as an example, five lines L1 to L5 are shown. Reading unit 3 for this document
Is performed in the direction of arrow 100, and the reading pitch is half the recording dot pitch, that is, 0.03175 mm. In this way, the image data read in the direction of arrow 100 and binarized is sequentially sent to the host 1. In order to save the memory capacity, the host 1 extracts only the data (for example, the “1” portion) corresponding to the preset area, that is, the portion where the line is recorded, into the memory 69 in order to save the memory capacity. save. In this case, the read image data is addressed and stored for each reading pitch in the reading unit 3.

The method of calculating the paper feed correction value based on this image data will be described. First, the leading and trailing end addresses of each line (L1 to L70) are taken out, and the leading end address of the line of interest is extracted. And the rear end address of the line before that are calculated. For example, in the case of the line L2 in FIG. 8, the value of (the rear end address (1E) of the line L1−the front end address (2S) of the line L2) is calculated. If the result of this calculation is "0", it means that the trailing end of the line L1 and the leading end of the line L2 coincide, and the joint between the lines is inconspicuous. Further, if this difference is, for example, minus 3, one address is (1/2) of the recording dot, so that there is a gap of 1.5 dots between the recording dots. On the contrary, if the difference is positive, the lines are overlapped by the amount corresponding to the positive value.

In this way, the difference (ES) between the trailing end of the previous line determined based on the original read by the reading unit 3 and the leading end of the line of interest, and the difference It is a figure which shows the correction value of the determined paper feed amount.

In FIG. 9, y is a correction value for the paper feed amount,
It is obtained by adding the value corresponding to the value of (ES) to the number of reference feed pulses applied to the paper transport motor 35 when transporting one line of recording paper. Here, the reference feed pulse number is the feed pulse number when the recording paper is conveyed by the recording paper conveyance motor 35 for 64 recording dots, and here, the recording paper is conveyed by an amount corresponding to ½ recording dot per pulse. Since it is set, the reference number of feed pulses is 128. The correction value y is stored in the paper feed correction value memory 68, and the printer controller 65 follows the value and the paper conveyance motor 35 for conveying one line of the recording paper.
The number of drive pulses is determined and the recording paper is conveyed and driven.

As described above, first, the printer 2 is used to print a test pattern as shown in FIG. 7, and the recording paper on which the pattern to be printed is set is set in the reading unit 3 to determine the difference between the lines. Ask. Next, based on these differences, for example, as shown in FIG. 9, a correction value corresponding to the gap between the lines is calculated, and the calculated correction value is stored in the paper feed correction value memory 68. Next, when actually recording an image, the correction value stored in the paper feed correction value memory 68 is referred to, and the paper feed amount (line feed) for each line feed (according to the line feed positions corresponding to the lines L1 to L70). Number of pulses applied to the paper transport motor 35)
To correct. As a result, the recording paper can be accurately conveyed over the entire surface of the recording paper.

The operation of the workstation of the present embodiment thus constructed will be described with reference to the flowchart of FIG.

This process is started by instructing the start of the recording operation. First, in step S1, it is judged whether or not the test recording mode is designated. If it is the test recording mode in step S1, the process proceeds to step S2, and the paper conveyance motor 35 is rotationally driven to convey the recording paper and set it at the recording position of the first line. At the same time, the value of the pulse counter 70 is reset to "0". Next, in step S3,
The correction values y stored in the paper feed correction value memory 68 are all reset to the standard "128". You are now ready for the exam.

Next, in step S4, the printer 2 is instructed to record the test pattern. As a result, the printer controller 65 drives the recording head 91 according to the test data (pattern data of FIG. 6) stored in the recording test data memory 67, and the carriage motor 11
The recording pattern data stored in the test data memory 67 is read by rotationally driving the paper feeding motor 35 or the like and the test pattern data is recorded on the recording paper (FIG. 7). At this time, the pulse counter 70 counts the number of drive pulses for driving the paper transport motor 35.

Next, in step S5, the recording sheet on which the test pattern for the test is recorded is set in the reading section 3 and the original is read. The intervals of the respective lines L1 to L70 of the recording paper thus read are obtained, and step S7
Then, based on the intervals, as shown in FIG. 9, a correction value corresponding to each interval is calculated. The calculation of this correction value is performed using the calculation unit 36. Next, in step S8, the correction value obtained in step S7 is output to the printer 2. As a result, the printer controller 65 writes these correction values in the paper feed correction value memory 68 in association with the line numbers (L1 to L70). Next, in step S9, the paper transport motor 35 is rotated in the reverse direction until the count value of the pulse counter 70 becomes "0".

After the paper feed correction value is set in this way, when normal recording is instructed in step S1, the process proceeds to step S10, and recording is performed while correcting the conveyance amount of the recording paper for each line.

The correction recording process of step S10 is shown in the flowchart of FIG. This processing is executed by the printer controller 65.

When normal recording is instructed, step S21
To the host 1
Input more and store in memory. Next in step S22
Then, the paper transport motor 35 is rotationally driven to position the head of the recording paper. Next, proceeding to step S23, the rotation drive of the carriage motor 31 is started, and the scanning of the carriage 11 in the S direction is started. Next, in step S24,
The recording data is output to the head drive circuit 66 in synchronization with the recording operation of the carriage 11, and recording is performed by the recording head 91. In step S25, it is checked whether or not the recording operation for one line is completed, and if it is not completed, step S23 is executed again.
Then, the carriage motor 31 is driven and the data is output to the recording head 91.

When the image recording for one line is completed in this way, the process advances to step S26 to refer to the value of the pulse counter 70 (indicating what line of recording) and the correction value stored in the paper feed correction value memory 68. Then, the drive amount (paper feed amount) of the paper transport motor 35 is determined. Next, in step S27,
The paper feed motor 35 is driven according to the determined paper feed amount, and the recording paper is fed by one line. And the carriage 1
1 is returned to the home position, and when the recording for one page is not completed in step S28, the process returns to step S23 again, and the recording operation for the next line starts.

In this way, each time the recording paper is conveyed in each line,
The line feed amount between recording lines is adjusted by correcting the number of pulses output to the paper feed motor 35 according to the correction value stored in the paper feed correction value memory 68. As a result, when the correction is not performed for each line, even if the recording is performed so that a gap is generated between the lines as shown in FIG. 8, for example, after the lines as shown in FIG. It is possible to increase the feeding accuracy between each line and record so that the end and the leading end coincide with each other.

In step S9 of FIG. 10, after the recording of one page is completed, the paper transport motor 35 is rotated in the reverse direction to set the value of the pulse counter 70 to "0". This is because the recording operation is performed by the rotation of the paper transport motor 35 in the forward direction, and the paper transport motor 35 is reversed and returned to the original position to use the same position of the wave combination of the gear train. ,
This is to make the conditions for unevenness in paper feed constant. Thus
By properly correcting the paper feed amount for each line in accordance with the correction value stored in the correction value memory 68, the recorded line intervals are well connected.

In the apparatus of this embodiment, it has been described that the recording and reading operations are performed only once in order to set the correction value. However, in order to improve the accuracy, it is corrected once and the test pattern is recorded again. It is also possible to read with the reading unit 3, confirm the set value, or finely adjust the paper feed amount.

Although the recording pattern is printed near the center of the recording paper, it is also printed on both the left and right sides of the recording paper to correct the average value of the misalignment between these three lines. May be used as a value.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. It goes without saying that the present invention can also be applied to the case where it is achieved by supplying a program for implementing the present invention to a system or an apparatus.

Further, in this embodiment, the so-called serial printer in which the carriage is scanned for recording has been described, but the present invention is not limited to this, and in the case of a line printer having a line head. Of course, it can also be applied to. Further, the type of printer is not limited to the ink jet type printer, and can be applied to, for example, a thermal printer or a wire dot printer.

As described above, according to the present embodiment, the test pattern is recorded, the recording paper on which the test pattern is recorded is read, the correction value of the feed amount for each line is calculated, and the correction value is calculated according to the correction value. By correcting the paper feed amount for each line feed, there is no overlap or gap between lines and the image quality is greatly improved.

[0058]

As described above, according to the present invention, the test pattern printed on the recording paper is read, and the correction value of the carry amount of the recording medium for each line calculated based on the read data is used. This has the effect of adjusting the carry amount for each row.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a device and a configuration of a printer according to an embodiment.

FIG. 2 is a block diagram showing a schematic configuration of an apparatus of this embodiment.

FIG. 3 is an exploded perspective view showing the internal configuration of the printer of the apparatus of this embodiment.

FIG. 4 is a perspective view of a cartridge used in the printer of this embodiment.

FIG. 5 is a diagram for explaining a nozzle array of a recording head of the printer of this embodiment.

FIG. 6 is a diagram showing an example of a test recording data pattern in the apparatus of the present embodiment.

FIG. 7 is a diagram showing an example of recording a test pattern in the apparatus of this embodiment.

FIG. 8 is a diagram showing a recording example of a test pattern.

9 is a diagram showing an example of a correction value calculated for each row based on the recording example of the test pattern of FIG.

FIG. 10 is a flowchart showing a test pattern recording process and a correction value calculating process in the apparatus of the present embodiment.

FIG. 11 is a diagram showing an example of recording a test pattern after the line feed is corrected by the apparatus of this embodiment.

FIG. 12 is a flowchart showing a correction recording process in the apparatus of this embodiment.

[Explanation of symbols]

 1 Host 2 Printer 3 Reading Unit 31 Carriage Motor 35 Paper Conveying Motor 36 Calculation Unit 65 Printer Controller 67 Test Data Memory 68 Paper Feed Correction Value Memory 69 Memory 70 Pulse Counter 91 Recording Head

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Osamu Yamada 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Instructor Souji Hamano 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Within the corporation

Claims (2)

[Claims] 1. A recording apparatus for recording an image on a recording medium based on recording data, comprising: a conveying unit that conveys the recording medium; and test pattern data on the recording medium while conveying the recording medium by the conveying unit. Recording means for recording, storage means for reading the recording medium recorded by the recording means, and storing a correction value calculated based on a deviation of the transport amount of each recording medium, and a correction stored in the storage means A recording means for correcting the conveyance amount of the conveyance means based on the value, and conveying the recording medium. 2. A recording method for recording an image on a recording medium based on recording data, comprising the steps of recording a test pattern on the recording medium, and photoelectrically reading the recording medium on which the test pattern is recorded. A detection step of detecting a deviation of the feed amount between the lines of each test pattern, a step of calculating a correction value of the conveyance amount of the recording medium for each row based on the deviation detected by the detection step, and the correction value A step of recording an image on the recording medium while correcting the carry amount of each line of the recording medium based on the recording method.