JP2011073158A - Recorder, method of controlling recorder, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adequately detect a deviation in an operation of recording an image on a recording medium in a recorder that includes a conveyance section for conveying a recording medium and a recording section for recording an image while allowing the recording medium to be scanned in a width direction of the recording medium. <P>SOLUTION: This recorder includes a scanner 12 for reading an image recorded on a recording medium. After a first positional deviation detection pattern is recorded on a recording medium by moving a recording head 2 in the width direction, a second positional deviation detection pattern intersecting with the first positional deviation detection pattern is recorded on the recording medium by moving the recording head 2 in the width direction. The recorded images are read by the scanner 12. The deviation in the operation of recording the images on the recording medium is detected on the basis of a mode of the intersection between both the patterns. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a recording apparatus including a recording unit that records an image while scanning the width direction of a recording medium, a control method for the recording apparatus, and a program.

  Conventionally, a conveyance roller that conveys a recording medium in the conveyance direction and a recording head that can reciprocate in the width direction of the recording medium are provided, and an image is recorded on the recording medium while the recording head is scanned in the width direction with respect to the recording medium. There is known a recording apparatus that records a predetermined image on a recording medium by intermittently performing the operation to perform the operation to convey the recording medium in the conveyance direction (see, for example, Patent Document 1).

JP 2008-126626 A

In the above-described recording apparatus, the conveyance roller, the recording head, and a carriage mechanism that moves the recording head mounted on the carriage cooperate to execute recording of an image on a recording medium. Due to individual differences or the like that occur in the process of manufacturing the recording apparatus, there may be a shift in operation related to image recording on the recording medium, leading to a decrease in recording quality, and there is a need to appropriately detect the shift.
The present invention has been made in view of the above-described circumstances, and an image is recorded on a recording medium by a transport unit that transports the recording medium in the transport direction and a recording unit that records an image while scanning the width direction of the recording medium. An object of the present invention is to appropriately detect a shift in operation related to image recording on a recording medium in a recording apparatus for recording.

In order to achieve the above object, the present invention is a recording apparatus configured to be capable of reciprocating scanning in the width direction of a recording medium and having a recording unit for recording an image on the recording medium, and scanning the recording unit in the width direction. After the first pattern is recorded on the recording medium, the recording unit is scanned in the width direction to record the second pattern that intersects the first pattern on the recording medium. The first pattern and the second pattern Based on the manner of intersection with the image, a shift in operation related to recording of an image on a recording medium is detected.
Here, after the recording unit is scanned in the width direction and the first pattern is recorded on the recording medium, the recording unit is scanned in the width direction and the second pattern intersecting with the first pattern is recorded on the recording medium. The manner of intersection of the first pattern and the second pattern differs depending on whether or not there is a shift in the operation related to image recording on the recording medium. Based on this, according to the above configuration, it is possible to appropriately detect a shift in the operation related to the recording of the image on the recording medium based on the mode of intersection of the first pattern and the second pattern.

After the recording portion is scanned in the forward direction and the first pattern is recorded on the recording medium, the recording portion is folded back at a predetermined position, and the folded recording portion is scanned in a plurality of directions to form the second pattern. On the recording medium, and based on the intersection of the first pattern and the second pattern, an image recorded by the recording unit that scans in the forward direction, and the recording unit that scans in the multi-direction May be used to detect misalignment with the recorded image.
Here, after the image is recorded while scanning the recording unit in the forward direction in the width direction, the recording medium is conveyed by a predetermined distance by the conveyance unit, and the recording unit is folded at a predetermined position, and is folded. In a recording apparatus that records a predetermined image on a recording medium by repeatedly performing an operation of scanning an image in multiple directions in the width direction, scanning in the forward direction is caused by a shift in the position where the recording unit turns back. In some cases, a positional deviation may occur between an image recorded by the recording unit that performs recording and an image recorded by the recording unit that scans in multiple directions. And, the manner of intersection between the first pattern and the second pattern when no misalignment occurs and the manner of intersection between the first pattern and the second pattern when no misalignment occurs are different. To do. Based on this, according to the above configuration, it is possible to appropriately detect the displacement based on the manner of intersection of the first pattern and the second pattern.
In particular, according to this configuration, the recording medium is not conveyed by the conveying unit between the recording of the first pattern on the recording medium and the recording of the second pattern on the recording medium. Accordingly, it is possible to detect the above-described positional deviation in a state where the influence of the deviation caused by the conveyance of the recording medium by the conveyance unit is eliminated, and it is possible to detect the above-mentioned positional deviation more reliably and accurately. In other words, it is possible to detect a shift accompanying the movement of the recording head, and it is sufficient to correct the movement of the recording head.

In the recording apparatus of the invention, the first pattern is a linear image, and the second pattern is a linear image inclined by a predetermined angle from the first pattern, and is read by the image reading unit. Further, the position of the actual intersection of the first pattern and the second pattern and the intersection of the first pattern and the second pattern stored in the storage unit when the positional deviation has not occurred. The positional deviation may be detected by comparison with the position.
According to this configuration, based on the comparison between the position of the actual intersection of the first pattern and the second pattern and the position of the intersection of the first pattern and the second pattern in the case where the positional deviation has not occurred, The positional deviation can be detected appropriately.

In the recording apparatus according to the invention, the recording apparatus further includes a conveyance unit that conveys a recording medium, and the recording unit is scanned in the width direction to record the first pattern on the recording medium, and then the first pattern and the second pattern are recorded. The recording medium is transported by a predetermined distance by the transport unit within a range where the pattern intersects, and the second pattern is recorded on the recording medium by scanning the recording unit in the width direction. And a deviation of the conveyance of the recording medium by the conveyance unit may be detected on the basis of the manner of intersection with the second pattern.
Here, after the recording unit is scanned in the width direction to record the first pattern on the recording medium, the conveyance unit moves the recording medium by a predetermined distance so that the state where the first pattern and the second pattern intersect is maintained. In the case where the recording unit is further scanned and the recording unit is scanned in the width direction and the second pattern is recorded on the recording medium, there is a case where there is a deviation in the conveyance of the recording medium by the conveyance unit and the case where it does not occur The manner of intersection between the first pattern and the second pattern is different. Based on this, according to the above configuration, it is possible to appropriately detect the deviation of the conveyance of the recording medium by the conveyance unit based on the manner of intersection of the first pattern and the second pattern.
If there is no displacement caused by the movement of the recording head, such as after the recording head has been corrected as described above, the displacement can be detected in a state where the influence of the displacement caused by the recording head is eliminated, and more reliably and accurately. The deviation can be detected. In other words, it is possible to detect a deviation associated with the conveyance of the recording paper, and it is sufficient to correct the conveyance amount of the conveyance unit.

In the recording apparatus of the above invention, the first pattern is an image in which a plurality of linear images appear parallel to the width direction at intervals in the width direction, and the second pattern is the first pattern. Corresponding to each of the linear images related to one pattern, linear images inclined by a predetermined angle from the linear image related to the first pattern are spaced apart in the width direction, and the width direction A plurality of parallel images, each of the linear images according to the first pattern, and the position of the intersection point read by the image reading unit of each of the linear images according to the second pattern; Each of the linear images according to the first pattern and the straight line according to the second pattern, which is stored in the storage unit, when there is no deviation in conveyance of the recording medium by the conveyance unit Of the position of each intersection of the image, by comparing it may be detecting a shift of the conveyance of the recording medium by the conveyance unit.
According to this configuration, there is a deviation between the actual intersection of each of the linear images related to the first pattern and each of the linear images related to the second pattern, and the conveyance of the recording medium by the conveyance unit. By detecting the deviation of the conveyance of the recording medium by the conveyance unit by comparing each of the linear images according to the first pattern and the intersection of each of the linear images according to the second pattern in the absence Accordingly, it is possible to appropriately detect the deviation of the conveyance of the recording medium by the conveyance unit.

In the recording apparatus of the above invention, when the deviation is detected, the deviation may be corrected. Correction can be made by changing the amount of movement of the recording head in the forward direction or the backward direction by the amount of deviation accompanying the movement of the recording head. Alternatively, correction can be made by changing the conveyance amount of the recording paper by the amount of deviation accompanying conveyance.
According to this configuration, when a deviation is detected, the deviation is automatically corrected, so that convenience for the user can be improved.

In order to achieve the above object, the present invention is configured to be capable of reciprocating scanning in the width direction of a recording medium, and a recording unit that records an image on the recording medium, and an image reading unit that reads an image recorded on the recording medium The recording section is scanned in the width direction to record the first pattern on the recording medium, and then the recording section is scanned in the width direction to intersect the first pattern. Recording the second pattern on the recording medium, reading the recorded image by the image reading unit, and operating the recording of the image on the recording medium based on the mode of intersection of the first pattern and the second pattern It is characterized by detecting a shift of the distance.
Here, after the recording unit is scanned in the width direction and the first pattern is recorded on the recording medium, the recording unit is scanned in the width direction and the second pattern intersecting with the first pattern is recorded on the recording medium. The mode of intersection between the first pattern and the second pattern differs depending on whether or not there is a shift in the operation related to the recording of the image on the recording field plate. Based on this, according to the above control method, it is possible to appropriately detect a shift in operation related to recording of an image on a recording medium, based on the mode of intersection of the first pattern and the second pattern.

In order to achieve the above object, the present invention is configured to be capable of reciprocating scanning in the width direction of a recording medium, and a recording unit that records an image on the recording medium, and an image reading unit that reads an image recorded on the recording medium A program executed by a control unit that controls a recording apparatus comprising: the control unit scanning the recording unit in the width direction to record the first pattern on a recording medium; An aspect of the intersection of the first pattern and the second pattern in which the second pattern which is scanned in the width direction and intersects the first pattern is recorded on a recording medium, the image after recording is read by the image reading unit. Based on the above, it is made to function so as to detect a shift in operation related to recording of an image on a recording medium.
Here, after the recording unit is scanned in the width direction and the first pattern is recorded on the recording medium, the recording unit is scanned in the width direction and the second pattern intersecting with the first pattern is recorded on the recording medium. The mode of intersection between the first pattern and the second pattern differs depending on whether or not there is a shift in the operation related to the recording of the image on the recording field plate. Based on this, by executing the above program, it is possible to appropriately detect a shift in operation related to recording of an image on a recording medium based on the manner of intersection of the first pattern and the second pattern.

  According to the present invention, there is provided a recording apparatus that records an image on a recording medium by a transport unit that transports the recording medium in the transport direction and a recording unit that records an image while scanning the width direction of the recording medium. Therefore, it is possible to appropriately detect and correct a shift in operation related to image recording.

1 is a diagram schematically illustrating a printer according to an embodiment together with a recording medium. FIG. 2 is a diagram schematically illustrating a printer together with a recording medium. FIG. 2 is a block diagram illustrating a functional configuration of a printer and a host computer. It is a flowchart which shows operation | movement of a host computer. It is a figure which shows the 1st, 2nd position shift detection pattern. It is the figure which expanded the 1st, 2nd position shift detection pattern to the coordinate system. It is a flowchart which shows operation | movement of a host computer. It is a figure which shows a correction step number table. It is a flowchart which shows operation | movement of a host computer. It is a figure which shows the 1st, 2nd conveyance deviation detection pattern. It is the figure which expanded the 1st, 2nd conveyance deviation detection pattern to the coordinate system.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are diagrams schematically showing a recording head 2 provided in the printer 1 together with a recording medium 3 in order to explain the basic operation of the ink jet printer 1.
The printer 1 performs a feeding operation for transporting the recording medium 3 in the transport direction (the direction indicated by the arrow Y1 in FIG. 1A), and ejects the recording head 2 while discharging ink from the recording head 2 to the recording medium 3. Inkjet recording that scans in the width direction of the recording medium 3 (the direction perpendicular to the conveying direction and indicated by the arrow Y2 in FIG. 1A) and records images such as characters, figures, and patterns on the recording medium 3 Printer.
The printer 1 is connected to a host computer 5 (FIG. 3), and records an image on the recording medium 3 based on control data input from the host computer 5. The contents of the control data will be described later.
Examples of the recording medium 3 include a cut sheet cut to a predetermined length, a continuous sheet in which a plurality of sheets are connected, or a roll paper wound in a roll shape. These sheets are papers such as plain paper, copy paper, cardboard, etc., or sheets made of synthetic resin, and those obtained by applying coating or infiltration to these sheets can also be used. Moreover, as a form of the cut sheet, for example, in addition to a standard size cut paper such as PPC paper or a postcard, a booklet form in which a plurality of sheets such as a passbook are bound, or a bag shape such as an envelope Is mentioned. Moreover, as a form of a continuous sheet, for example, continuous paper in which sprocket holes are formed at both ends in the width direction and folded at a predetermined length can be cited.

As shown in FIGS. 1 and 2, the printer 1 includes a carriage 6 that can reciprocate in the width direction. A plurality of ink cartridges (not shown) storing ink are mounted on the carriage 6. In the present embodiment, the carriage 6 is mounted with four ink cartridges that respectively store four color inks of C (cyan), K (black), Y (yellow), and M (magenta).
A recording head 2 that discharges ink toward the recording medium 3 is mounted on the carriage 6. A large number of nozzle holes 7 for discharging the ink as fine ink particles are opened at the front end surface of the recording head 2. The recording head 2 ejects ink supplied from the ink cartridge toward the recording medium 3 by an actuator configured using, for example, a piezo element, and ejects fine ink particles from the nozzle holes 7.
The nozzle holes 7 are arranged in four rows of nozzle rows 8-11. Each nozzle row 8-11 is formed to extend in the transport direction in the recording head 2, and each nozzle row 8-11 is formed side by side with a predetermined interval in the width direction. These four nozzle rows 8-11 are configured such that ink is supplied from different ink cartridges and discharges ink of different colors. In this embodiment, the nozzle row 8 is from a C (cyan) ink cartridge, the nozzle row 9 is from a K (black) ink cartridge, the nozzle row 10 is from a Y (yellow) ink cartridge, and the nozzle row 11 is from M ( The ink is supplied from a magenta cartridge.
In FIG. 1 and FIG. 2, the nozzle row 8-11 is clearly shown for convenience of explanation.
The printer 1 is provided with a scanner 12 that can optically read an image recorded on the recording medium 3 (see FIG. 1A, omitted in other drawings). When an image recorded on the recording medium 3 is read by the scanner 12, after the image is recorded on the recording medium 3, the recording medium 3 is transported in such a manner that the image can be recorded on the scanner 12.

FIG. 3 is a block diagram illustrating a functional configuration of the printer 1 and the host computer 5 that controls the printer 1. In the present embodiment, the printer 1 and the host computer 5 cooperate to function as a recording device.
As shown in FIG. 3, the printer 1 includes a printer-side control unit 15, a motor drive circuit 16, a carriage drive motor 17, a medium feed motor 18, a head drive circuit 19, an input unit 20, and a display unit 21. And an interface unit 22 and a scanner 12.
The printer-side control unit 15 centrally controls each unit of the printer 1, and nonvolatilely stores a CPU as a calculation execution unit, a basic control program executed by the CPU, data related to the basic control program, and the like. A ROM for storing information, a program executed by the CPU, a RAM for temporarily storing data related to the program, and other peripheral circuits. The ROM stores the position of the intersection of the first pattern and the second pattern when no positional deviation has occurred.

The motor drive circuit 16 is connected to the carriage drive motor 17 and outputs a drive pulse to the carriage drive motor 17 under the control of the printer-side control unit 15 to rotate the carriage drive motor 17. The carriage 6 reciprocates in the width direction in accordance with the rotation of the carriage drive motor 17. In the present embodiment, the carriage drive motor 17 is a stepping motor, and the amount of rotation is determined by the number of drive pulses output from the motor drive circuit 16. That is, the printer-side control unit 15 drives the recording head 2 by a predetermined distance corresponding to the drive control signal for rotating the carriage drive motor 17 in a predetermined rotation direction by a predetermined number of steps. A drive control signal for moving in a predetermined direction is output to the motor drive circuit 16, and the motor drive circuit 16 carries the carriage drive motor 17 by a predetermined number of steps in a predetermined rotation direction based on the input drive control signal. Generates and outputs a driving pulse that rotates the motor.
The motor drive circuit 16 is connected to the medium feed motor 18 and outputs a drive pulse to the medium feed motor 18 under the control of the printer-side control unit 15 so that the medium feed motor 18 is moved by a predetermined amount in a predetermined direction. Rotate. A conveyance roller (not shown) that contacts the recording medium 3 and conveys the recording medium 3 in the conveyance direction rotates according to the rotation of the medium feeding motor 18, and the recording medium 3 conveys according to the rotation of the conveyance roller. Conveyed in the direction.
The head driving circuit 19 is connected to the recording head 2 and operates the actuator of the recording head 2 under the control of the printer-side control unit 15 to eject a predetermined amount of ink from the nozzle holes 7 of the nozzle row 8-11. Let

The input unit 20 is connected to an operation switch or the like provided in the casing of the printer 1, detects an operation of the operation switch or the like by the user, and outputs an operation signal corresponding to the detected operation to the printer-side control unit 15.
The display unit 21 is connected to an LED, a liquid crystal display panel, or the like provided in the housing of the printer 1, and displays various information on the LED, the liquid crystal display panel, or the like under the control of the printer-side control unit 15.
The interface unit 22 is connected to the host computer 5 via a signal transmission cable or the like, and transmits / receives various signals to / from the host computer 5 under the control of the printer-side control unit 15.
The scanner 12 optically reads an image recorded on the recording medium 3 and outputs data indicating the read image to the printer-side control unit 15. The printer-side control unit 15 outputs data relating to the read image to the host-side control unit 25.

On the other hand, the host computer 5 includes a host-side control unit 25, a display unit 26, an input unit 27, an interface unit 28, and a storage unit 29.
The host-side control unit 25 centrally controls each unit of the host computer 5 and includes a CPU, a ROM, a RAM, and other peripheral circuits, like the printer-side control unit 15.
The display unit 26 includes a liquid crystal display panel, and displays an image related to a video signal input from the host side control unit 25 on the liquid crystal display panel under the control of the host side control unit 25. The display unit 26 may include an organic EL panel or a CRT instead of the liquid crystal display panel.
The input unit 27 is connected to an input device such as a mouse or a keyboard, detects an operation of the input device by the user, and outputs an operation signal corresponding to the detected operation to the host-side control unit 25.
The interface unit 28 is connected to the printer 1 via a signal cable or the like, and transmits and receives various signals to and from the printer 1 under the control of the host-side control unit 25.
The storage unit 29 includes a hard disk, an EEPROM, and the like, and stores various data in a rewritable manner. As shown in FIG. 3, the correction step number table 30 is stored in the storage unit 29. The correction step number table 30 will be described later. Note that the storage unit 29 may store the position of the intersection of the first pattern and the second pattern when no positional deviation occurs.

  The host computer 5 stores a printer control program (program) for controlling the printer 1 such as a printer driver. The host-side control unit 25 of the host computer 5 reads the printer control program, By executing, the printer 1 is controlled.

Next, a basic operation when the printer 1 records an image on the recording medium 3 under the control of the host computer 5 will be described with reference to FIGS. 1 and 2.
Here, it is assumed that a predetermined application program is running on the host computer 5. The application program has a function of displaying an image that can be recorded on the recording medium 3 on the liquid crystal display panel of the display unit 26, and the user operates an input device such as a mouse or a keyboard while referring to the image. When an instruction to start recording an image on the recording medium 3 is given, the image data of the image is output to a printer control program.

When the start of image recording is instructed by the user, the printer-side control unit 15 should perform resolution conversion processing, color correction processing, halftone processing, and rasterization processing on the image data and record it on the recording medium 3. Raster data of the entire image is generated, and control data including the generated raster data is generated. The control data is data for causing the printer 1 to perform an operation related to image recording. In addition to the raster data, a recording start command for instructing start of image recording and scanning for instructing to scan the recording head 2. Commands and commands such as a feed command for instructing to send the recording medium 3 by a predetermined amount in the transport direction are included.
After generating the control data, the host side control unit 25 outputs the control data to the printer side control unit 15.
When control data is input from the host computer 5, the printer-side control unit 15 determines from the nozzle holes 7 formed in the nozzle rows 8-11 based on the scanning command and recording raster data included in the control data. While ejecting a predetermined amount of ink, the recording head 2 moves from the position P1 (starting position) in FIG. 1A to the position P2 (folding position) in FIG. 1B in the forward direction (the direction indicated by the arrow Y3). To scan. As a result, an image is recorded in an area corresponding to the recording area R1 (FIG. 1B). The length of the recording region R1 in the transport direction is defined by the nozzle row length T1 (FIG. 1A) of each nozzle row 8-11.
Scanning of the recording head 2 from the position P1 to the position P2 is executed by rotating the carriage drive motor 17 by a predetermined number of steps under the control of the printer-side control unit 15.

Next, the printer-side control unit 15 transports the recording medium 3 in the transport direction based on the feed command included in the control data. Here, during execution of normal image recording, the feed amount is the same value as the nozzle row length T1.
Next, the printer-side control unit 15 folds the recording head 2 at the position P2 set as the wrapping value, and discharges a predetermined amount of ink from the nozzle holes 7 of each color based on the recording raster data. The recording head 2 is scanned from P2 to the position P1. As a result, an image is recorded in an area corresponding to the recording area R2 continuous with the recording area R1. In this way, based on the control data, the printer-side control unit 15 records a predetermined image on the recording medium 3 by alternately scanning the recording head 2 and transporting the recording medium 3.

  The host computer 5 according to the present embodiment can operate the printer 1 based on two operation modes, that is, a misregistration detection / correction mode and a transport misalignment detection mode. Hereinafter, the positional deviation detection / correction mode and the conveyance deviation detection mode will be described.

First, the misregistration detection / correction mode will be described.
As described above, in the printer 1 according to this embodiment, the recording head 2 records an image on the recording medium 3 while scanning in the forward direction (arrow Y3 in FIG. 1A), and then performs predetermined folding. At the position (position P2 in FIG. 1B), the image is turned back and an image is recorded on the recording medium 3 while scanning in two directions (arrow Y4 in FIG. 1A).
Here, the return position of the recording head 2 is a position where the recording head 2 reaches when the carriage drive motor 17 is rotated by a predetermined number of steps from a predetermined starting position (position P1 in FIG. 1A). Managed as. However, the carriage 6, the carriage drive motor 17, the timing belt (not shown) that connects the carriage 6 and the carriage drive motor 17, the aging deterioration of members related to the carriage 6 such as the motor drive circuit 16, and the mass production of the printer 1. Even if the carriage drive motor 17 is rotated by a predetermined number of steps, the recording head 2 may reach a position different from the assumed folding position due to the individual difference of each printer 1. In this case, there is a deviation between the image recorded by the recording head 2 that scans in the forward direction and the image that is recorded by the recording head 2 that scans in the two directions (hereinafter, such deviation is referred to as “positional deviation”). End up.
The misregistration detection / correction mode is an operation mode for detecting whether or not the aforementioned misregistration has occurred, and correcting the misregistration when the misregistration has occurred.

FIG. 4 is a flowchart showing the operation of the host computer 5 in the misregistration detection / correction mode. It is assumed that the recording medium 3 is set in the printer 1 and the recording head 2 is located at the starting position (position P1 in FIG. 1A).
Referring to FIG. 4, the host-side control unit 25 of the host computer 5 outputs control data to the printer-side control unit 15 and scans the recording head 2 in the forward direction, while causing the recording medium 3 to shift the first position. The detection pattern 40 is recorded (step SA1).

FIG. 5A is a diagram schematically showing the first misregistration detection pattern 40.
As shown in FIG. 5A, the first misregistration detection pattern 40 is a pattern including a plurality (four in this embodiment) of the first misregistration detection modules 41. Each of the first misregistration detection modules 41 is a linear image having a length T2 extending in the transport direction. In the first misregistration detection pattern 40, the first misregistration detection modules 41 are spaced apart in the width direction. It is shown parallel to the width direction.
After the process of step SA1, the host-side control unit 25 rotates the carriage drive motor 17 in the reverse direction when the carriage drive motor 17 rotates by a predetermined number of steps and the recording head 2 reaches the return position. Thus, the recording head 2 is folded back (step SA2). Here, in the normal printing operation, as described above, the recording head 2 is folded and the recording medium 3 is transported in the transport direction. In this misregistration detection / correction mode, the recording medium 3 is transported. Do not carry in the direction.
Next, the host control unit 25 records the second misregistration detection pattern 42 while scanning the recording head 2 in multiple directions (step SA3).

FIG. 5B is a diagram schematically illustrating the second misregistration detection pattern 42.
As shown in FIG. 5B, the second misregistration detection pattern 42 is a pattern including a plurality (four in this embodiment) of the second misregistration detection modules 43. Each of the second misregistration detection modules 43 is a linear image, and has a width in the width direction so as to correspond to each of the first misregistration detection modules 41 of the first misregistration detection pattern 40. Appears parallel to the direction. Each of the second misregistration detection modules 43 is inclined by an angle θ1 with respect to the transport direction, in other words, with respect to the direction in which the first misregistration detection module 41 extends. Further, as shown in FIG. 5B, the length of the second misregistration detection module 43 in the transport direction is the length T2 as in the first misregistration detection module 41.

FIG. 5C is a diagram schematically showing an image on the recording medium 3 after the processing of step SA3 is executed. In particular, an image recorded by the recording head 2 that scans in the forward direction and a multi-direction are shown. FIG. 3 is a diagram showing an image recorded on a recording medium 3 when no positional deviation, which is a deviation from an image recorded by the recording head 2 that scans, has occurred.
As shown in FIG. 5C, when the process of step SA3 is executed, each of the first misalignment detection modules 41 of the first misalignment detection pattern 40 and the second misalignment of the second misalignment detection pattern 42 are obtained. Each of the detection modules 43 intersects at the intersection K1. In particular, when there is no misalignment, as shown in FIG. 5C, the first point is such that the intermediate point C1 in the transport direction of the first misregistration detection module 41 and the intersection K1 are the same point. A misregistration detection module 41 and a second misregistration detection module 43 are set.
Returning to FIG. 4, after the processing in step SA <b> 3, the host-side control unit 25 outputs control data to the printer-side control unit 15 to control the medium feed motor 18 and the scanner 12, and the first recorded on the recording medium 3. The image of the positional deviation detection pattern 40 and the second positional deviation detection pattern 42 is read, and bitmap format image data indicating the read image is generated (step SA4).
Next, the host-side control unit 25 detects whether or not a positional deviation has occurred by analyzing the image data (step SA5). Here, an example of the operation related to the process of step SA5 will be described.

FIG. 6 is a diagram of the first misregistration detection pattern 40 and the second misregistration detection pattern 42 for use in explaining step SA5.
For example, the host-side control unit 25 analyzes the image data in the bitmap format, and a combination of one first misregistration detection module 41 and a second misregistration detection module 43 that intersects the first misregistration detection module 41. To extract. This extraction is performed by pattern matching, color detection for each pixel, or the like.
Next, as shown in each drawing of FIG. 6, the host-side control unit 25 uses the midpoint C1 of the line segment indicating the first misregistration detection module 41 as the origin, and the Y axis overlaps the first misregistration detection module 41. In the extended coordinate system 45, the extracted line segment indicating the first misalignment detection module 41 and the line segment indicating the second misalignment detection module 43 are developed. The line segment indicating the first misalignment detection module 41 and the line segment indicating the second misalignment detection module 43 are developed in the coordinate system 45 so that the direction toward the + direction of the Y axis is the transport direction. Is done.
Next, the host-side control unit 25 has an origin (= intermediate point C1) and an intersection K1 (= intersection of the line segment indicating the second misalignment detection module 43 and the Y axis in the coordinate system 45) at different positions. Whether or not is detected.
When there is no position shift, the intersection point K1 is located at the origin as shown in FIG. Based on this, the host-side control unit 25 detects that no misalignment has occurred by detecting that the intersection K1 is located at the origin.
On the other hand, if there is a positional shift, the intersection point K1 is positioned in the + direction of the Y axis from the origin as shown in FIG. 6B, or the intersection point K1 as shown in FIG. 6C. Is located in the negative direction of the Y axis from the origin. Based on this, the host-side control unit 25 detects that a positional deviation has occurred by detecting that the intersection point K1 is not located at the origin.

Now, returning to FIG. 4 above, when it is detected as a result of the detection in step SA5 that no positional deviation has occurred (step SA6: NO), the printer 1 is in a normal state with no positional deviation. The host side control unit 25 ends the process.
On the other hand, when it is detected that a positional deviation has occurred (step SA6: YES), the host-side control unit 25 executes a correction process (step SA7) for correcting the positional deviation. Here, the correction process will be described in detail.

FIG. 7 is a flowchart showing the operation of the host computer 5 in the correction process.
The host-side control unit 25 intersects K1 between the first misregistration detection module 41 and the second misregistration detection module 43 formed when the second misregistration detection pattern 42 is recorded on the recording medium 3 by the process of step SA3. And the distance from the intermediate point C1 of the first misregistration detection module 41 is detected. Specifically, the host-side control unit 25 develops a line segment indicating the first misregistration detection module 41 and a line segment indicating the second misalignment detection module 43 in the coordinate system 45 described above. Then, based on the distance between the origin (= intermediate point C1) and the intersection K1, the distance between the intermediate point C1 and the intersection K1 is detected (step SB1).
Here, as shown in FIG. 6B, when the intersection point K1 is located in the + direction of the Y axis from the origin, and as shown in FIG. 6C, the intersection point K1 is − of the Y axis from the origin. Differences from the case of being located in the direction will be described.
When the intersection point K1 is located in the + direction of the Y axis from the origin (FIG. 6B), the actual return position of the recording head 2 is located on the side toward the double direction from the return position that does not cause a positional shift. Therefore, the relative position of the second misalignment detection module 43 with respect to the first misalignment detection module 41 is on the multi-directional side compared to the relative position when no misalignment occurs. Accordingly, the intersection K1 is located on the + side of the Y axis from the origin.
Similarly, when the intersection point K1 is positioned in the Y-axis direction from the origin (FIG. 6C), the actual return position of the recording head 2 is on the forward direction from the return position that does not cause a positional shift. Therefore, the relative position of the second misalignment detection module 43 with respect to the first misalignment detection module 41 is compared with the relative position when no misalignment occurs, and the forward direction side Accordingly, the intersection K1 is located on the negative side of the Y axis from the origin.
Furthermore, the distance between the origin and the intersection K1 is proportional to the distance between the return position where no positional deviation occurs and the actual return position. For example, the relative position of the second misregistration detection module 43 with respect to the first misregistration detection module 41 is also proportional to the actual folding position in two directions with respect to the folding position where no misalignment occurs. In the direction, the intersection K1 is displaced to the + side of the Y axis with respect to the origin. Similarly, the relative position of the second positional deviation detection module 43 with respect to the first positional deviation detection module 41 is also proportional to the actual folding position in the forward direction with respect to the folding position that does not cause positional deviation. In the forward direction, the intersection K1 is displaced to the negative side of the Y axis with respect to the origin.
Now, referring back to FIG. 7, after detecting the distance between the intermediate point C1 and the intersection K1 in step SB1, the host-side control unit 25 refers to the correction step number table 30 stored in the storage unit 29 (step SB2). ), The number of steps (hereinafter referred to as “correction”) that should be increased or decreased from the number of steps set as the number of steps from the current starting position to the return position (hereinafter referred to as “set number of steps”) in order to correct the positional deviation. Step ") is acquired (step SB3). Here, the operation of step SB2 and step SB3 will be described in detail.

FIG. 8 is a diagram schematically showing the correction step number table 30.
As shown in FIG. 8, the correction step number table 30 includes a separation distance field 30a and a correction step number field 30b.
The separation distance field 30a stores separation distance data indicating the distance between the intermediate point C1 and the intersection K1. In the present embodiment, when the first misalignment detection module 41 and the second misalignment detection module 43 are developed in the coordinate system 45, when the intersection K1 is located in the Y axis + direction with respect to the origin, the separation distance is When it is a positive value and the intersection point K1 is located in the Y-axis-direction with respect to the origin, the separation distance is a negative value.
In the correction step number field, correction step number data indicating the correction step number described above is stored.
The separation distance data stored in the separation distance field 30a and the correction step number data stored in the correction step number field 30b are associated as follows. In other words, the correction step number data stored in association with one separation distance data is such that a positional deviation that causes the intermediate point C1 and the intersection K1 to be separated by the distance indicated by the separation distance data occurs. In this case, the value indicates the number of steps to be increased or decreased from the set number of steps when correcting the folding position so as to eliminate the positional deviation. Therefore, in the example of the uppermost record in the correction step number table 30 shown in FIG. 8, when the separation distance between the intermediate point C1 and the intersection K1 is “+0.1 mm”, the set step number is increased by one step. As a result, the positional deviation is eliminated. As described above, the positional deviation occurs due to the deviation of the folding position, and the positional deviation is eliminated by appropriately correcting the folding position.
In step SB3, the host-side control unit 25 refers to the correction step number table 30 and identifies and identifies a record storing separation distance data indicating the distance between the intermediate point C1 and the intersection K1 acquired in step SB1. The correction step is acquired by referring to the correction step number data stored in the correction step number field 30b of the record.

Returning to FIG. 7, after the process of step SB3, the host-side control unit 25 corrects the set step number based on the correction step number acquired in step SB3 (step SB4). As a result, the number of setting steps is corrected, and the positional deviation caused by the deviation of the folding position is eliminated.
As described above, in the misregistration detection / correction mode, misregistration detection and correction when misregistration occurs are performed. As described above, the first misregistration detection pattern 40 and the first misregistration pattern 40 During the recording of the two-position shift detection pattern 42, the conveyance of the recording medium 3 in the conveyance direction is not executed. Accordingly, it is possible to detect misalignment in a state where the recording medium 3 is not affected at all by the “deviation” caused by the conveyance in the conveyance direction.

Next, the conveyance deviation detection mode will be described.
As described above, in the printer 1 according to the present embodiment, during normal image recording, scanning of the recording head 2 in the forward direction and recording of the image, conveyance of the recording medium 3 in the conveyance direction, and the recording head 2 are performed. Scanning in multiple directions and recording of an image, transport of the recording medium 3 in the transport direction, and so on, image recording by the recording head 2 and transport of the recording medium 3 in the transport direction are performed alternately. Here, aged deterioration of a member for feeding the recording medium 3 in the conveyance direction, for example, “reduction” of the conveyance roller itself, deterioration of balance between a plurality of conveyance rollers, etc., and an individual generated in the manufacturing process of the printer 1 Due to the difference or the like, when the recording medium 3 is transported in the transport direction, the recording medium 3 may be transported out of the transport direction.
The conveyance deviation detection mode is an operation mode for detecting whether or not the conveyance deviation described above has occurred.

FIG. 9 is a flowchart showing the operation of the host computer 5 in the conveyance deviation detection mode. It is assumed that the recording medium 3 is set in the printer 1 and the recording head 2 is located at the starting position (position P1 in FIG. 1A). Further, it is assumed that the above-described misregistration detection / correction mode has been executed in advance, and no misregistration has occurred in the printer 1.
Referring to FIG. 9, the host-side control unit 25 of the host computer 5 outputs control data to the printer-side control unit 15 and scans the recording head 2 in the forward direction while shifting the first conveyance to the recording medium 3. The detection pattern 46 is recorded (step SC1).

FIG. 10A is a diagram schematically illustrating the first conveyance deviation detection pattern 46. The first conveyance deviation detection pattern 46 is a pattern having substantially the same shape as the first positional deviation detection pattern 40, and includes a plurality (four in this embodiment) of first conveyance deviation detection modules 47.
After the process of step SC1, the host-side control unit 25 outputs control data to the printer-side control unit 15 and rotates the medium feed motor 18 to transport the recording medium 3 in the transport direction (step SC2). The transport amount in the transport direction of the recording medium 3 in step SC2 is different from that in the normal recording operation, and second transport deviation detection recorded on the recording medium 3 by the recording head 2 that scans in multiple directions in step SC4 described later. The conveyance amount is within a range where the pattern 48 and the first conveyance deviation detection pattern 46 intersect. For example, the distance is half the nozzle row length T1 of the nozzle row 8-11.
Next, the host-side control unit 25 outputs control data to the printer-side control unit 15, turns the recording head 2 back at the turn-back position (step SC3), and scans the recording head 2 in a plurality of directions while feeding it to the recording medium 3. The second conveyance deviation detection pattern 48 is recorded (step SC4).

FIG. 10B is a diagram schematically showing the second conveyance deviation detection pattern 48.
As shown in FIG. 10B, the second conveyance deviation detection pattern 48 includes a plurality (four in this embodiment) of the second conveyance deviation detection modules 49. Each of the second conveyance deviation detection modules 49 is a linear image inclined by a predetermined angle θ2 with respect to the conveyance direction, and corresponds to each first conveyance deviation detection module 47. Each of the second conveyance deviation detection modules 49 is set so as to intersect with each of the corresponding first conveyance deviation detection modules 47 when it is recorded on the recording medium 3 in step SC4.

FIG. 10C is a diagram schematically showing an image on the recording medium 3 after executing the process of step SC4. In particular, an image recorded on the recording medium 3 when no conveyance deviation occurs is shown. FIG.
As shown in FIG. 10C, when the process of step SC4 is executed, each of the first conveyance deviation detection module 47 of the first conveyance deviation detection pattern 46 and the second conveyance deviation of the second conveyance deviation detection pattern 48 are displayed. Each of the detection modules 49 intersects at the intersection K2. In particular, when there is no conveyance deviation, the position of the intersection K2 in each of the first conveyance deviation detection modules 47 is the same, and the straight line S1 connecting the intersections K2 and the first conveyance deviation detection module 47 are orthogonal. It becomes a state to do.
Returning to FIG. 4, after the process of step SC <b> 4, the host-side control unit 25 outputs control data to the printer-side control unit 15 to control the medium feed motor 18 and the scanner 12, and the first recorded on the recording medium 3. The image of the conveyance deviation detection pattern 46 and the second conveyance deviation detection pattern 48 is read, and bitmap format image data indicating the read image is generated (step SC5).
Next, the host-side control unit 25 detects whether or not conveyance deviation has occurred by analyzing the image data (step SC6). Here, an example of the operation related to the process of step SC6 will be described.

FIG. 11 is a diagram of the first conveyance deviation detection pattern 46 and the second conveyance deviation detection pattern 48 for use in the description of step SC6.
For example, the host-side control unit 25 analyzes the image data in the bitmap format, and all the first conveyance deviation detection modules 47 of the first conveyance deviation detection pattern 46 and all of the first conveyance deviation detection modules 47 that intersect with each other. A combination with the second conveyance deviation detection module 49 is extracted. This extraction is performed by pattern matching, color detection for each pixel, or the like.
Then, as shown in each drawing of FIG. 11, the host-side control unit 25 is a line segment indicating the first conveyance deviation detection module 47, the first conveyance deviation detection module 47 </ b> L closest to the multi-direction side, All of the extracted first coordinate systems 50 are extended to the coordinate system 50 extending from the intersection K2 with the second conveyance deviation detection module 49L corresponding to the first conveyance deviation detection module 47L, with the Y axis overlapping the first conveyance deviation detection module 47L. A line segment indicating the misregistration detection module 41 and a line segment indicating all the second misregistration detection modules 43 are developed. It should be noted that the line segment indicating the first conveyance deviation detection module 47 and the line segment indicating the second conveyance deviation detection module 49 are arranged such that the direction toward the + direction of the Y axis is the conveyance direction and the X axis is The coordinate system 50 is expanded so that the direction toward the + direction is the forward direction and the direction toward the-direction is the double direction.

Next, the host-side control unit 25 has a straight line formed by connecting the intersection K2 of each first transport deviation detection module 47 and each second transport deviation detection module 49 on the same straight line as the X axis of the coordinate system 50. Whether or not is detected.
Here, when there is no conveyance deviation, as shown in FIG. 11A, a straight line formed by connecting the intersections K2 of the first conveyance deviation detection modules 47 and the second conveyance deviation detection modules 49. Exists on the same straight line as the X axis of the coordinate system 50. Based on this, the host-side control unit 25 determines that the straight line formed by connecting the intersections K2 of the first conveyance deviation detection modules 47 and the second conveyance deviation detection modules 49 is the same as the X axis of the coordinate system 50. By detecting the presence on the line, it is detected that no conveyance deviation has occurred.
On the other hand, when a conveyance deviation occurs, as shown in FIG. 11B, a straight line formed by connecting the intersections K2 of the first conveyance deviation detection modules 47 and the second conveyance deviation detection modules 49 is formed. In this state, the coordinate system 50 is inclined with respect to the X axis. Based on this, the host-side control unit 25 determines that a straight line formed by connecting the intersections K2 of the first conveyance deviation detection modules 47 and the second conveyance deviation detection modules 49 with respect to the X axis of the coordinate system 50. By detecting that the vehicle is inclined, it is detected that a conveyance deviation has occurred.

Now, returning to FIG. 9 above, if it is detected as a result of the detection at step SC6 that no conveyance deviation has occurred (step SC7: NO), the printer 1 is in a normal state with no conveyance deviation. The host side control unit 25 ends the process.
On the other hand, when it is detected that a conveyance deviation has occurred (step SC7: YES), the host-side control unit 25 controls the display unit 26 to display that a conveyance deviation has occurred (step SC8). As a result, a user, an operator, or the like can quickly and surely recognize that a transport deviation has occurred, and based on the recognition, a user can perform necessary processing such as a transport roller check or a repair request. it can.

As described above, in the present embodiment, the recording head 2 is scanned in the width direction to record the first misalignment detection pattern 40 on the recording medium 3, and then the recording head 2 is scanned in the width direction to move to the first position. A second positional deviation detection pattern 42 including a second positional deviation detection module 43 that intersects the first positional deviation detection module 41 of the deviation detection pattern 40 is recorded on the recording medium 3, and the first positional deviation detection module 41 and the second positional deviation are recorded. Based on the manner of intersection with the detection module 43, a positional deviation is detected.
According to this, the mode of intersection of the first positional deviation detection module 41 and the second positional deviation detection module 43 when no positional deviation occurs, and the first positional deviation detection when the positional deviation occurs. Based on the manner of intersection between the first positional deviation detection module 41 and the second positional deviation detection module 43, utilizing the fact that the manner of intersection between the module 41 and the second positional deviation detection module 43 is different, Misalignment can be detected.
In the present embodiment, the recording head 2 is scanned in the width direction to record the first conveyance deviation detection pattern 46 on the recording medium 3, and then the recording head 2 is scanned in the width direction to obtain the first conveyance deviation detection pattern 46. A second conveyance deviation detection pattern 48 including a second conveyance deviation detection module 49 intersecting with the first conveyance deviation detection module 47 is recorded on the recording medium 3, and the first conveyance deviation detection module 47 and the second conveyance deviation detection module 49 are recorded. The conveyance deviation is detected based on the crossing mode.
According to this, the mode of intersection of the first conveyance deviation detection module 47 and the second conveyance deviation detection module 49 when no conveyance deviation occurs, and the first conveyance deviation detection when the conveyance deviation occurs. Based on the manner of intersection between the first conveyance deviation detection module 47 and the second conveyance deviation detection module 49, utilizing the fact that the manner of intersection between the module 47 and the second conveyance deviation detection module 49 is different, Can detect transport deviation.

Further, the printer 1 according to the present embodiment records an image while scanning the recording head 2 in the forward direction, and then transports the recording medium 3 by a predetermined distance and folds the recording head 2 at the folding position. A predetermined image is recorded on the recording medium by repeatedly performing the operation of recording the image while the recorded recording head 2 is scanned in multiple directions. Then, after the recording head 2 is scanned in the forward direction and the first positional deviation detection pattern 40 is recorded on the recording medium 3, the recording head 2 is folded back at the folding position without carrying the recording medium 3. The recording head 2 is scanned in two directions to record the second positional deviation detection pattern 42 on the recording medium 3, and based on the manner of intersection of the first positional deviation detection pattern 40 and the second positional deviation detection pattern 42, A positional deviation between an image recorded by the recording head 2 scanning in the forward direction and an image recorded by the recording head 2 scanning in the multi-direction is detected.
According to this, the mode of intersection of the first positional deviation detection module 41 and the second positional deviation detection module 43 when no positional deviation occurs, and the first positional deviation detection when the positional deviation occurs. Based on the manner of intersection between the first positional deviation detection module 41 and the second positional deviation detection module 43, utilizing the fact that the manner of intersection between the module 41 and the second positional deviation detection module 43 is different, Misalignment can be detected.
In particular, according to the above, the conveyance of the recording medium 3 is not executed between the recording of the first misregistration detection pattern 40 on the recording medium 3 and the recording of the second misregistration detection pattern 42 on the recording medium 3. . Accordingly, it is possible to detect the positional deviation in a state where the influence of the deviation caused by the conveyance of the recording medium 3 is eliminated, and it is possible to detect the positional deviation more reliably and accurately.

In the present embodiment, the first misalignment detection module 41 of the first misalignment detection pattern 40 is a linear image, and the second misalignment detection module 43 of the second misalignment detection pattern 42 is the first misalignment. This is a linear image inclined from the detection module 41 by a predetermined angle θ1, and the actual intersection point K1 of the first misalignment detection module 41 and the second misalignment detection module 43 and the first misalignment when no misalignment has occurred. The positional deviation is detected by comparing with the intersection K1 of the first positional deviation detection module 41 and the second positional deviation detection module 43.
According to this, the actual position K1 of the first misalignment detection module 41 and the second misalignment detection module 43 when no misalignment occurs and the first misalignment detection when the misalignment occurs. By utilizing the fact that a deviation occurs between the module 41 and the actual position K1 of the second position deviation detection module 43, the position deviation can be detected appropriately.

Further, in the present embodiment, when a positional deviation is detected, the positional deviation is corrected.
According to this, when the positional deviation is detected, the positional deviation is automatically corrected, so that the convenience for the user can be improved.

Further, in the present embodiment, after the recording head 2 is scanned in the width direction to record the first conveyance deviation detection pattern 46 on the recording medium 3, the first conveyance deviation detection module 47 of the first conveyance deviation detection pattern 46, The recording medium 3 is conveyed by a predetermined distance so as to maintain the state where the second conveyance deviation detection pattern 48 intersects the second conveyance deviation detection module 49, and further, the recording head 2 is scanned in the width direction to perform the second. A mode in which the conveyance deviation detection pattern 48 is recorded on the recording medium 3 and the first conveyance deviation detection module 47 of the first conveyance deviation detection pattern 46 and the second conveyance deviation detection module 49 of the second conveyance deviation detection pattern 48 are intersected. Based on the above, a conveyance deviation is detected.
According to this, the mode of intersection of the first conveyance deviation detection module 47 and the second conveyance deviation detection module 49 when the conveyance deviation occurs, and the first conveyance deviation when the conveyance deviation does not occur. By utilizing the fact that the detection module 47 and the second conveyance deviation detection module 49 are different from each other, conveyance deviation can be appropriately detected.

In the present embodiment, the first conveyance deviation detection pattern 46 is an image in which a plurality of first conveyance deviation detection modules 47 appear in parallel with the width direction at intervals in the width direction. The pattern 48 corresponds to each of the first conveyance deviation detection modules 47, and the second position deviation detection module 43 inclined by a predetermined angle θ2 with respect to the first conveyance deviation detection module 47 is spaced apart in the width direction. A plurality of images appearing in parallel with the width direction, and the actual intersection K2 between each of the first conveyance deviation detection module 47 and each of the second positional deviation detection modules 43 and when no conveyance deviation occurs. By comparing the intersection K2 between each of the first conveyance deviation detection modules 47 and each of the second positional deviation detection modules 43, a conveyance deviation is detected.
According to this, the intersection K2 between each of the first conveyance deviation detection module 47 and each of the second positional deviation detection modules 43 when no conveyance deviation occurs, and the first when the conveyance deviation occurs. By utilizing the fact that a deviation occurs at each intersection K2 between each of the conveyance deviation detection modules 47 and each of the second position deviation detection modules 43, it is possible to detect the conveyance deviation appropriately.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.
For example, in the above-described embodiment, the host computer 5 controls the printer 1 to execute the misalignment detection / correction mode and the transport misalignment detection mode. However, the misalignment detection / correction is performed by the printer 1 alone. A mode and a conveyance deviation detection mode may be performed. In this case, the printer 1 functions as a recording device.
The above-described printer 1 is an ink jet printer. However, the type of the printer is not limited to this, and for example, a recording wire provided in a recording head is struck against the recording medium 3 via an ink ribbon to form dots. It may be a dot impact printer that records an image by recording. In other words, the invention can be applied to any printer including a transport unit that transports the recording medium 3 in the transport direction and a recording unit that scans the width direction of the recording medium 3.

  DESCRIPTION OF SYMBOLS 1 ... Printer (recording apparatus), 3 ... Recording medium, 5 ... Host computer (recording apparatus), 12 scanner (image reading part), 40 ... 1st position shift detection pattern, 42 ... 2nd position shift detection pattern, 46 ... First conveyance deviation detection pattern, 48... Second conveyance deviation detection pattern.

Claims (8)

A recording apparatus configured to be capable of reciprocating scanning in the width direction of a recording medium and including a recording unit that records an image on the recording medium,
An image reading unit for reading an image recorded on a recording medium;
The recording unit is scanned in the width direction to record the first pattern on the recording medium, and then the recording unit is scanned in the width direction to record the second pattern intersecting the first pattern on the recording medium, The image after recording is read by the image reading unit, and an operation shift related to recording of an image on a recording medium is detected based on an aspect of intersection of the first pattern and the second pattern. Recording device.   After the recording portion is scanned in the forward direction and the first pattern is recorded on the recording medium, the recording portion is folded back at a predetermined position, and the folded recording portion is scanned in a plurality of directions to form the second pattern. Is recorded on the recording medium, the recorded image is read by the image reading unit, and is recorded by the recording unit that scans in the forward direction based on the mode of intersection of the first pattern and the second pattern. The recording apparatus according to claim 1, wherein a position shift between an image and an image recorded by the recording unit that scans in the multi-direction is detected. The first pattern is a linear image, and the second pattern is a linear image inclined by a predetermined angle from the first pattern,
The position of the intersection of the first pattern and the second pattern read by the image reading unit and the one stored in the storage unit, and the first pattern and the second pattern when the positional deviation does not occur The recording apparatus according to claim 2, wherein the positional deviation is detected by comparison with a position of an intersection of patterns. A transport unit for transporting the recording medium;
After the recording unit is scanned in the width direction and the first pattern is recorded on the recording medium, the conveying unit moves the recording medium by a predetermined distance within a range where the first pattern and the second pattern intersect. Further, the recording unit is scanned in the width direction to record the second pattern on a recording medium, the image after recording is read by the image reading unit, and the first pattern and the second pattern The recording apparatus according to claim 1, wherein a deviation in conveyance of the recording medium by the conveyance unit is detected based on a mode of intersection. The first pattern is an image in which a plurality of linear images appear in parallel with the width direction at intervals in the width direction, and the second pattern is an image of the linear image according to the first pattern. Corresponding to each, a plurality of linear images inclined by a predetermined angle from the linear image related to the first pattern appear in parallel with the width direction at intervals in the width direction. ,
Each of the linear images according to the first pattern and the position of the intersection read by the image reading unit of each of the linear images according to the second pattern are stored in the storage unit, Each of the linear images according to the first pattern and the position of each intersection of the linear images according to the second pattern when no deviation of the conveyance of the recording medium by the conveyance unit has occurred, The recording apparatus according to claim 4, wherein a shift in conveyance of the recording medium by the conveyance unit is detected by comparing the two.   The recording apparatus according to claim 1, wherein the deviation is corrected when the deviation is detected. A recording apparatus configured to be capable of reciprocating scanning in the width direction of the recording medium, and having a recording unit that records an image on the recording medium and an image reading unit that reads an image recorded on the recording medium;
The recording unit is scanned in the width direction to record the first pattern on the recording medium, and then the recording unit is scanned in the width direction to record the second pattern intersecting the first pattern on the recording medium, The image after recording is read by the image reading unit, and an operation shift related to recording of an image on a recording medium is detected based on an aspect of intersection of the first pattern and the second pattern. Control method of recording apparatus. It is configured to be capable of reciprocating scanning in the width direction of the recording medium, and is executed by a control unit that controls a recording apparatus that includes a recording unit that records an image on the recording medium and an image reading unit that reads an image recorded on the recording medium. A program,
The control unit
The recording unit is scanned in the width direction to record the first pattern on the recording medium, and then the recording unit is scanned in the width direction to record the second pattern intersecting the first pattern on the recording medium, The image after recording is read by the image reading unit, and based on the mode of intersection of the first pattern and the second pattern, the function of detecting a shift in operation related to recording of the image on the recording medium is performed. A featured program.

Images