JP5117132B2 - Registration adjustment method between recording units - Google Patents

Description

The present invention relates to a registration adjustment method between recording units in which a plurality of recording units having line-type recording heads are arranged in series and recording is performed on the same recording medium.

2. Description of the Related Art Conventionally, there is known a recording apparatus that has a plurality of image forming units and can record a plurality of color images on a recording medium that is conveyed along a conveyance path. For example, there have been recording apparatuses that form color images by arranging yellow, magenta, cyan, and black image recording apparatuses in tandem. As a registration adjustment function of such a color image forming apparatus, as disclosed in JP-A-2001-134041, a pattern printed by an image forming unit arranged at a reference position and a pattern printed by another image forming unit are used. There are known means for overlapping with different positional deviations, measuring the reflection intensity of the pattern, detecting the color misregistration amount, and correcting the recording position according to the value.
(For example, Patent Document 1)
JP 2001-134041 A

  However, as in the conventional example, it is good if the image forming means for each color can be controlled from a common control software as one apparatus, but each image forming means is independent as one recording unit, and each has independent control software. In this case, it is necessary to install unique control software according to the arrangement and color of each recording unit.

  Therefore, although the apparatuses have the hardware with the same configuration, there is a management complexity that must be handled as a separate product due to a slight difference in control software.

  One of the factors is that the registration adjustment pattern and the adjustment pattern control program for correcting a minute image forming position shift generated between a plurality of image forming means are different.

The present invention has been devised in order to solve the above problems.
That is, the registration adjustment pattern recording method of the present invention is a recording apparatus in which a plurality of recording units equipped with a plurality of recording heads are arranged, and the divided images are recorded on the same sheet by the plurality of recording heads. A registration adjustment pattern recording method for determining a position shift adjustment value,
Each of the plurality of recording units uses a recording head serving as a reference for each of the recording units, and without using another recording head in the recording unit, the registration adjustment pattern between the plurality of recording units is obtained. Recording, and further using the reference recording head in the recording unit and another recording head in the recording unit to record a registration adjustment pattern between the plurality of recording heads in the recording unit. Is,
The recording unit that is recorded by each of the plurality of recording units, and the registration adjustment pattern between the plurality of recording units is the same recording pattern, and is recorded by each of the plurality of recording units. The registration adjustment pattern among the plurality of recording heads is composed of a first bar and a second bar different from the first bar, each of the first bars being the same recording pattern, Each of the second bars has the same recording pattern,
In the second bar of the registration adjustment pattern between the plurality of recording units recorded by the recording unit, a recording unit different from the recording unit has a registration adjustment pattern between the plurality of recording units . Add the first bar ,
On the other hand, in the registration adjustment pattern between the plurality of recording heads in the recording unit recorded by the recording unit, a recording unit different from the recording unit has a mutual relationship between the plurality of recording heads in the recording unit. A registration adjustment pattern is not added.

  According to the present invention, in a recording system in which a plurality of independent recording units are arranged in series, it is possible to adjust registration between each recording unit while installing common control software. Not only the productivity of the unit is improved, but also an arbitrary recording unit can be arranged according to demand, so that the degree of freedom for the user is improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a main part of a recording system 100 according to the present embodiment together with a host computer 101 which is an external device. The recording unit 1 (102) and the recording unit 2 (103) are connected to the hub of the host computer 101 via the USB cable together with the transport device (130) to constitute a recording system.

  In the recording system according to the present embodiment, the line heads 111 to 114 constituting the recording unit 1 and the line heads 121 to 124 in the recording unit 2 are all long line heads capable of recording over the entire width of the recording medium. It shows that two inkjet recording units using four are arranged in series.

  Each recording unit receives various data processed by the host computer 101 and records an image.

  The conveying device 130 conveys a recording medium, which is continuous paper here, using the conveying roller 105 and the conveying belt 106, and outputs an encoder described later using a leading edge detection signal of a sheet (for example, label) 107 of the leading edge detection sensor 109a as a trigger. Is supplied to the recording units 102 and 103 as a conveyance synchronization signal, and each recording unit sequentially records an image on a recording medium by the recording heads 111 to 114 and 121 to 124 in response to the received conveyance synchronization signal.

In the example of FIG.
From the upstream side in the transport direction of the recording head of the recording unit 1 (102), the recording head 111: black, the recording head 112: black, the recording head 113: black, the recording head 114: black, on the other hand, in the recording unit 2 (103),
The recording head 121: magenta The recording head 122: magenta The recording head 123: magenta The recording head 124: magenta, one color image is recorded for each recording unit. Each recording unit divides and records each assigned raster by four line heads.

  FIGS. 1A to 1D show images in which the recording heads 111 to 114 of the recording unit 1 (102) share and record the image 108A.

  1A shows a state where recording is performed when the recording medium 107 passes through the recording head 111 on the most upstream side in the transport direction of the recording unit 1 (102). When the raster (line) number of interest was changed from n, images were recorded every 4 rasters. In the conveyance direction indicated by the arrow in the figure, recording is performed in order from the portion with the largest raster number.

  At this time, a background star-shaped image recorded in magenta is not yet recorded, but is added for convenience of explanation.

  FIG. 1B shows a state after the recording medium 107 passes through the second recording head 112.

  Images of each raster number n + 1, n + 5, --- were additionally recorded.

  Subsequently, FIG. 1C shows a state after the recording medium 107 passes through the third recording head 113.

  Similarly, images of raster numbers n + 2, n + 6, and --- were additionally recorded.

  FIG. 1D shows a state after the recording medium 107 passes through the fourth recording head 114.

  At this point, black, which is the color assigned to the recording unit 1 (102), has been recorded on all rasters.

  By such a method, the printed matter 108 can be output at a recording speed four times faster than recording by each recording head, so that productivity for a relatively large amount of printing is improved, but division recording is performed by each recording head. Registration adjustment for finely adjusting the relative positional relationship is necessary, and inter-unit registration adjustment between the recording units 1 and 2 is particularly important.

  FIG. 2 is a block diagram showing a configuration example of the control hardware of each recording unit according to the present embodiment. Here, the recording unit 1 (102) will be described as a representative.

  The control unit of the recording unit includes a CPU 202, executes a control program stored in a nonvolatile memory (ROM) 203, receives and analyzes recording data and commands from the host PC 101 via the interface controller 201, Control each peripheral device. The control unit includes a work area for various data processing, a memory (RAM) 204 used as a reception buffer, a VRAM 207 used as an image development unit, and the like. Further, a head control circuit 208 that drives and controls the recording heads 111 to 114, a head U / D (Up and Down) motor 211 that controls a cleaning operation and a recording operation for keeping each recording head in an optimum state for recording, A cap motor 212 and a pump motor 213 are provided. The EEPROM 205 is a non-volatile memory that stores an electrical adjustment value for correcting a minute position between recording heads related to the present invention.

  In addition, a temperature sensor 221 that detects the temperature inside each recording head or the recording unit can also be read via the input / output port 209.

  FIG. 3 is an electrical block diagram of the transport device 130 that handles the recording medium 107.

  The conveyance start / stop command of the recording medium 107 is received from the host PC 101 via the USB interface controller 301, and the CPU 302 analyzes the command.

When the transfer start command is received, the transfer speed instruction value to the servo logic 308,
For example, a value equivalent to 400 [mm / sec] is written to instruct the start of operation. Subsequently, the conveyance motor 310 is activated via the servo amplifier 309, and then the servo control at a constant speed of the indicated speed value, for example, 400 [mm / sec] is entered.

  The speed control is performed by the servo logic 308 itself by feeding back the output of the rotary encoder 311 coupled to the rotation shaft of the conveyance motor 310 to the servo logic 308.

  Thereafter, when the recording medium 107 arrives at the transport unit from a roll paper supply unit (not shown) and the front end is detected by the paper front end detection sensor 109a, transmission of a count Up signal and a position pulse is started from the servo logic. The count Up / Down signal and the position pulse are obtained by synchronizing and converting the output of the encoder 311. The position pulse is output, for example, 600 [Pulse] when the recording medium 301 advances 1 inch, similarly to the resolution of the recording head. . The count Up / Down signal is maintained at “High” level while the recording medium 301 is being conveyed in the forward direction and at “Low” level in the reverse direction (back feed). That is, the count Up / Down signal during the recording operation maintains “High” in the normal state.

  The count Up signal and the position pulse signal are also used as a real-time cutout signal of each raster of the recording units 1 and 2.

  The operation panel 305 has a display such as an LCD and operation keys, and can manually turn on / off, start / stop operation, and monitor the operation status of the apparatus.

  Note that when the recording medium 107 is large, it is possible to use a sheet suction unit (not shown).

  Next, a registration adjustment method will be described with reference to FIG. The recording head mounted on each recording unit has a plurality of recording elements (nozzles) arranged in the paper width direction substantially orthogonal to the paper transport direction, but due to variations during manufacturing when mounted on the recording unit, The positions of the recording elements in the paper width direction do not necessarily match between the recording heads.

  In the paper transport direction, the recording elements may be misaligned between the recording heads for the same reason.

In the case of the example in this figure, the mechanical shift in the recording width direction of the mounting position of another recording head with respect to the reference recording head 111 is the recording head 112: one dot in the right direction (401).
Recording head 113: one dot in the left direction (402)
Recording head 114: one dot in the right direction (403)
It is.

If the recording resolution of the recording head is 600 [dpi] each,
42.3 [μm] (25.4 [mm] / 600)
Therefore, although it is a small amount, it affects the image quality, so that the electrical correction is performed based on the above result obtained by the test pattern. Specifically, the recording head 112: shifts the recording data by one dot in the left direction. Recording head 113: shifts the recording data by one dot in the right direction. Recording head 114: shifts the recording data by one dot in the left direction. A higher quality image can be obtained.

On the other hand, the mechanical shift in the paper transport direction of the mounting position of the other recording head with respect to the reference recording head 111 is the recording head 112: one dot upstream (404).
Recording head 113: one dot (405) downstream
Recording head 114: 2 dots downstream (406)
It is.

If the recording resolution in the transport direction is 600 [dpi], one dot is
42.3 [μm] (25.4 [mm] / 600)
Although it is a small amount, it is corrected similarly. Specifically, the recording head 112: shifts the recording data by one dot downstream. Recording head 113: shifts the recording data upstream by one dot. Recording head 114: shifts the recording data upstream by two dots.

  Such a method of adding a minute position correction is generally called registration adjustment.

The target value of the mechanical mounting dimension in the transport direction is, for example, the recording head 112: 1.0 inch (600 dots) downstream of the reference recording head 111, and the recording head 113: 2.0 inches ( 1200 dots) downstream The print head 114: 3.0 inches (1800 dots) downstream is the design value.

  In the case of a system in which two sets of recording units are arranged in series in the paper conveyance direction as in this embodiment, the registration adjustment (hereinafter referred to as “inside the unit”) In addition to (registration), it is also necessary to perform registration adjustment between recording units (hereinafter referred to as inter-unit registration).

  FIG. 5 is a schematic diagram of a registration adjustment pattern 500 output by the recording system of this embodiment.

  By transmitting a command for instructing registration adjustment pattern recording from the host computer 101, a test pattern such as 500 is recorded on a recording medium (paper).

  Reference numeral 500 denotes a vertical registration adjustment pattern for correcting a shift in the paper conveyance direction.

  The pattern is divided into a registration unit 501 in the central recording unit and a registration unit between the front and rear units. A reference bar group 502 for other recording units is formed in the front, and a comparison bar group 503 for other recording units is formed in the respective recording units.

  The adjustment pattern is basically a plurality of sets of comparison bars recorded with a slight shift by the adjustment recording head with respect to the reference bar recorded by the reference recording head 111. Further, the inter-unit registration unit is configured by a reference head in each recording unit, that is, the recording head 111 in the recording unit 1 and the recording head 121 in the recording unit 2.

The basic adjustment method is performed by the user visually confirming the position of the comparison bar that matches the reference bar and setting the adjustment value in the host computer 101. For example, in the recording position adjustment unit of 2nd (here, recording head 112: black) in FIG. In this case, it indicates that the recording data should be advanced downstream by one dot in the transport direction.
Similarly, in 3rd (here, the recording head 113: black), since the bars coincide at the position of -1, it means that the recording data should be returned to the upstream side by one dot. Further, in 4th (here, the recording head 114: black), since the bars coincide with each other at -2, it indicates that the recording data should be returned upstream by 2 dots.

  The adjustment value set in the host computer 101 may be stored in the host computer 101 and transferred to the recording unit for each printing, or may be transferred in advance to the recording unit and stored in the nonvolatile memory of the recording unit.

  In the drawing of this embodiment, the adjustment range is ± 3 for the sake of convenience, but in practice it is necessary to have a sufficient range for adjustment based on mechanical alignment accuracy and the like.

  FIG. 6 is an explanatory diagram of a method for outputting in-unit registration and inter-unit registration adjustment patterns all at once in the transport direction of the system configured with the recording units 1 and 2 as in this embodiment.

  When performing registration adjustment, when the blank space 611 from the recording start trigger position 610 to the actual appearance of the registration adjustment pattern is conveyed from the host computer 101 together with the registration adjustment pattern printing start command, A registration pattern 502 is recorded by the recording head 111 which is a reference head of the recording unit 1 (102).

  Since the recording head 111 in this embodiment is used as a reference for registration adjustment of all the recording heads of the recording unit 1 (102) and the recording unit 2 (103), a comparison bar is added to the reference bar group 502. Absent.

  Next, the registration adjustment pattern 501 in the recording unit 1 is recorded.

  Next, a reference bar 602 by the recording head 121 which is the reference head of the recording unit 2 (103) is added along the comparison bar 503 recorded by the recording head 111.

  Subsequently, a registration adjustment pattern 601 in the recording unit 2 (103) 1 is recorded.

  The comparison bar 603 for the next recording unit is recorded by the recording head 121. However, in this embodiment, since the recording unit is set to two sets, the reference bar is not recorded in this area.

  FIG. 6A shows an enlarged version of registration adjustment patterns 601 to 603.

From the reference bar 602, the recording head 121 serving as the reference of the recording unit 2 (103) has the same bar at the position of −1 with respect to all the recording heads 111 serving as the reference.
Recording head 121 (magenta): -1
That is, it indicates that the recording data of the recording head 121 should be returned upstream by one dot.

  This is nothing but the fact that the recording data should be returned upstream by one dot with respect to the entire recording unit 2 (103).

On the other hand, when focusing attention on the recording result of the registration adjustment pattern 601 in the recording unit 2 (103), the recording head 122 (magenta): −1 with respect to the recording head 121 (magenta).
Recording head 123 (magenta): +3
Recording head 124 (magenta): +1

From the above, the registration adjustment values in the transport direction of the recording heads in the recording unit 2 (103) are summarized.
Recording head 122: -2 (-1-1)
Recording head 123: +2 (+ 3-1)
Recording head 124: 0 (+ 1-1)

Incidentally, as a target value of the physical mounting dimension of the recording unit 2 (103) with respect to the recording unit 1 (102), for example, if the design value of the pitch in the transport direction is 5.0 inches, all the standard recordings Recording head 121: Downstream by 5.0 inches (3000 dots) Recording head 122: Downstream by 6.0 inches (3600 dots) Recording head 123: Downstream by 7.0 inches (4200 dots) Recording head 124 : 8.0 inches (4800 dots) downstream, and considering realistic mounting errors, the range of registration adjustment required is, for example, +16 to -16 (actual size is about ± 0.6 mm). No.

  FIG. 7 shows a lateral registration adjustment pattern for correcting a shift in the recording width direction.

  The pattern is divided into a registration unit 701 in the recording unit at the center and a registration adjustment unit between the front and rear units. A reference bar group 702 for the other recording units is formed in the front, and a comparison bar group 703 for the other recording units is formed in the respective recording units.

  The adjustment pattern is basically a plurality of sets of comparison bars recorded with a slight shift by the adjustment recording head with respect to the reference bar recorded by the reference recording head 111 (black). is there. The inter-unit registration adjustment unit uses a reference head in each recording unit, that is, the recording head 111 in the recording unit 1 and the recording head 121 in the recording unit 2.

Focusing on the in-unit registration adjustment unit 701, for example, in the recording position adjustment unit of 2nd (recording head 112: black), the bars coincide with each other at -1. In this case, it indicates that the recording data should be returned to the left by one dot in the recording width direction.
Similarly, in 3rd (recording head 113: black), the bars coincide at the location of +1, which means that the recording data should be advanced to the right by one dot. Further, in 4th (recording head 114: black), since the bars coincide at the position of -1, it indicates that the recording data should be returned to the left by one dot.

  FIG. 8 is an explanatory diagram of a method for outputting each intra-unit registration and inter-unit registration adjustment pattern in the recording width direction of the system constituted by the recording units 1 and 2 as in this embodiment. The basic concept is the same as the adjustment pattern in the paper transport direction described above.

  First, a registration pattern 702 is recorded by the recording head 111 which is a reference head of the recording unit 1 (102).

  Since the recording head 111 in this embodiment is used as a reference for registration adjustment of all the recording heads of the recording unit 1 (102) and the recording unit 2 (103), the comparison bar is added to the reference bar group 702. Absent.

  Next, a registration adjustment pattern 701 in the recording unit 1 is recorded.

  Next, a reference bar 802 by the recording head 121 which is the reference head of the recording unit 2 (103) is added along the comparison bar 703 recorded by the recording head 111.

  Subsequently, a registration adjustment pattern 801 in the recording unit 2 (103) is recorded.

  Then, a comparison pattern 803 for the next recording unit is recorded by the recording head 121. However, in this embodiment, since two recording units are set, the reference pattern is not recorded in this area.

  FIG. 9 is a flowchart for explaining the operation flow of the recording unit 1 (102), the recording unit 2 (103), and the transport device 130 when a registration adjustment pattern recording command is received from the host PC 101.

  When the registration adjustment pattern recording command is received, the CPU 302 of the conveying device writes the instruction speed value in the servo logic 308 and starts the sheet conveying operation (S901). Preparation for recording such as movement of the recording head to the recording position is performed (S921, S941).

  When the leading edge detection sensor 109a detects the leading edge of the sheet (S902), the servo logic 309 of the transport device starts supplying position pulses and a count UP signal to the recording units 1 and 2 from this point (S903). .

  As described above, the position pulse is output 600 [Pulse] when the sheet 107 advances by 1 [inch], for example, similarly to the resolution of the recording head.

  In the recording unit 1, the position pulse is counted by a position counter (not shown), and when the value of the position counter reaches m (S922), registration pattern recording is started (S923).

  Here, the value of m is the distance obtained by adding the distance (for example, 1/6 inch) from the leading edge of the paper 107 to the writing position to the distance (for example, 1.5 inch) from the leading edge detection sensor 109a to the recording head 111. The corresponding transport amount is equivalent to 1000 pulses in decimal.

Recording of the registration pattern by the recording unit 1 proceeds,
In the recording unit 2, when the value of the position counter reaches n (S942), registration pattern recording is started (S943).

  Here, the value of n is a transport amount corresponding to a distance obtained by adding a distance (5 inches: as described above) between the recording head 111 and the recording head 121 to m, and corresponds to 4000 pulses in the decimal system.

  Note that the values of m and n are sent as preset values from the host PC 101 to the recording units 1 and 2 in advance and stored in the nonvolatile memory 205.

  When recording of the registration adjustment patterns (FIGS. 6 and 8) in the transport direction and the paper width direction is completed by the recording units 1 and 2 (S924-Yes, S944-Yes), after a predetermined end operation, the end status is set. Is transmitted to the transport device 130 and the host PC 101 (S925, S945). The transport device 130 also stops the transport operation (S904), and the operation is completed.

  By recording the above registration adjustment patterns all at once, registration adjustment values in the vertical and horizontal directions of all the recording heads of all the recording units can be obtained.

  As described above, in this embodiment, when a plurality of recording units having a plurality of line heads are arranged in series, the same registration adjustment pattern as the control software common to each recording unit can be used. It is possible to realize the adjustment between the recording heads. Since each recording unit is equipped with the same hardware configuration and common control software, the production efficiency of the recording unit and the user's freedom are improved.

  The preferred embodiments of the present invention have been described above in detail, but various modifications and changes other than those mentioned above can be made.

  In the above embodiment, the user himself / herself checks the registration adjustment pattern recorded at the time of registration adjustment, and determines the adjustment value. However, the registration pattern is provided on the downstream side in the paper conveyance direction with a contact type line scanner or the like. The system may be a system that automatically reads the adjustment value and automatically determines the adjustment value.

  In the above embodiment, a recording system using two sets of recording units has been described. However, the present invention is not limited to two sets.

  Further, the recording head constituting the recording unit is not limited to black and magenta, but a combination of a plurality of full-color units of four colors (K, C, M, Y) or a single color recording at high speed. It is also conceivable to perform high density recording by overprinting the same recording data with a plurality of recording units on a recording medium with high ink permeability.

  In any case, the present invention is characterized in that a plurality of recording units that meet the user's request can be arranged and registration adjustment between the recording units can be realized at once.

  In the above embodiment, the recording apparatus of the ink jet recording method has been described. However, the recording system is not limited to the ink jet recording method, but is an electrophotographic method or a thermal transfer method as long as the recording system includes an image forming apparatus. However, the present invention is effective.

  INDUSTRIAL APPLICABILITY The present invention can be used in a recording system that can record a print having a relatively small recording width such as form printing at a high speed and an extremely high quality image.

1 is a diagram illustrating a schematic configuration of a recording system according to an embodiment of the present invention. FIG. 6 is a diagram recorded by the first recording head by raster division. FIG. 10 is a diagram after recording by the second recording head by raster division. FIG. 9 is a diagram after recording by the third recording head by raster division. FIG. 9 is a diagram after recording by the fourth recording head by raster division. It is a block diagram which shows the hardware constitutions which control the recording part of a recording unit. It is a block diagram which shows the hardware constitutions which control a conveying apparatus. FIG. 6 is an explanatory diagram of a registration adjustment method between recording heads in a recording unit. FIG. 6 is an explanatory diagram of a registration adjustment pattern in the transport direction of a recording unit according to an embodiment of the present invention. It is explanatory drawing about the registration adjustment pattern between recording units of the recording system in embodiment of this invention. It is an enlarged view of the registration adjustment pattern between recording units. FIG. 6 is an explanatory diagram of a registration adjustment pattern in a recording width direction of a recording unit in the embodiment of the present invention. FIG. 7 is an explanatory diagram regarding a registration adjustment pattern in a recording width direction of a plurality of recording units in the embodiment of the present invention. 6 is an operation flow of a transport device and a recording unit when recording a registration adjustment pattern in an embodiment of the present invention.

Explanation of symbols

101 Host computer 102 Recording unit 1
103 Recording unit 2
109 Paper leading edge detection sensor 111 Recording head (black)
112 Recording head (black)
113 Recording head (black)
114 Recording head (black)
121 Recording head (magenta)
122 Recording head (magenta)
123 Recording head (magenta)
124 Recording head (magenta)
130 Transport device 201 Interface controller 202 CPU (recording device)
203 Program storage memory (ROM)
204 Reception and work memory (RAM)
207 VRAM (image memory)
208 Printhead control circuit
302 CPU (conveying device)
310 Conveyance motor 311 Encoder 500 Conveyance direction registration adjustment pattern 501 Recording unit 1 (102) In-unit registration adjustment unit 502 Inter-unit registration adjustment unit reference bar 503 Inter-unit registration adjustment unit comparison bar 601 Recording unit 2 ( 103) Intra-unit registration adjustment unit 602 Reference bar for inter-unit registration adjustment unit 603 Comparison bar for inter-unit registration adjustment unit

700 Recording width direction registration adjustment pattern 701 Recording unit 1 (102) In-unit registration adjustment unit 702 Reference bar 703 of inter-unit registration adjustment unit Comparison bar 801 of inter-unit registration adjustment unit In recording unit 2 (103) unit Registration adjustment unit 802 Reference bar of the inter-unit registration adjustment unit 803 Comparison bar of the inter-unit registration adjustment unit

Claims (3)

Registration adjustment for determining a recording position deviation adjustment value in a recording apparatus in which a plurality of recording units equipped with a plurality of recording heads are arranged and the divided images are recorded on the same sheet by the plurality of recording heads . A pattern recording method for
Each of the plurality of recording units uses a recording head serving as a reference for each of the recording units, and without using another recording head in the recording unit, the registration adjustment pattern between the plurality of recording units is obtained. Recording, and further using the reference recording head in the recording unit and another recording head in the recording unit to record a registration adjustment pattern between the plurality of recording heads in the recording unit. The registration adjustment patterns between the plurality of recording units, which are recorded by each of the plurality of recording units, are each the same recording pattern, and are recorded by each of the plurality of recording units. the registration adjustment pattern of a plurality of recording heads each other in the recording unit, One and a bar, and a second bar different from the first bar, is constituted by, each of said first bar and is the same recording pattern, each of said second bar are the same recording pattern,
In the second bar of the registration adjustment pattern between the plurality of recording units recorded by the recording unit, a recording unit different from the recording unit has a registration adjustment pattern between the plurality of recording units . Add the first bar ,
On the other hand, in the registration adjustment pattern between the plurality of recording heads in the recording unit recorded by the recording unit, a recording unit different from the recording unit has a mutual relationship between the plurality of recording heads in the recording unit. A registration adjustment pattern recording method, wherein a registration adjustment pattern is not added. The recording start timing of the registration adjustment pattern between the plurality of recording units and the registration adjustment pattern between the plurality of recording heads in the recording unit recorded by the plurality of recording units is set from an external setting unit. It is determined based on
The registration recording pattern recording method according to claim 1. A control program for generating a registration adjustment pattern between the plurality of recording units and a registration adjustment pattern between the plurality of recording heads in the recording unit of the plurality of recording units are the same. To
The registration adjustment pattern recording method according to claim 1.

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