JP6244966B2 - Recording apparatus and recording method - Google Patents

Description

  The present invention relates to a recording apparatus and a recording method.

2. Description of the Related Art Conventionally, a recording apparatus is used in which a recording medium is supported and conveyed by an adhesive belt stretched around a plurality of rotating bodies, and the recording medium is taken up by a winding unit.
Among these, a recording apparatus including a sensor for detecting a peeling position of the recording medium with respect to the adhesive belt is disclosed.

  Patent Document 1 discloses a recording apparatus capable of controlling the peeling position of the recording medium in accordance with the difference in the degree of expansion of the fabric as the recording medium.

  In the recording apparatus, since the drying time after recording has a great influence on the image quality, a device for drying the image after recording in a short time has been devised.

  Patent Document 2 discloses a fabric having excellent drying properties and high-quality recording by containing a predetermined surfactant.

JP 2007-196625 A Japanese Patent Laid-Open No. 10-331078

  In a recording apparatus including the adhesive belt and the winding unit, the recording medium is adhesive when the recording medium is wound up at a lower speed than the conveying speed of the recording medium through the adhesive belt. An entrainment error involving the belt occurs.

Here, the roll diameter of the winding unit is initially a small diameter of the roll core, and gradually increases as the recording medium is wound. If the rotation speed of the winding motor of the winding unit is the same, when the roll diameter is small, the winding speed of the recording medium is relatively low.
As in Patent Document 1, in a recording apparatus configured to continuously convey a recording medium using an adhesive belt, when the roll diameter of the winding unit is small, the winding motor is rotated at a high speed, thereby Since it is necessary to increase the winding speed of the recording medium by the winding unit, a large-capacity winding motor has to be used.

On the other hand, when the peeling position of the recording medium is detected by a sensor and the recording medium is about to be caught in the adhesive belt, the conveyance of the recording medium by the adhesive belt is stopped. The winding error does not occur even when the winding speed of the winding unit is low.
Accordingly, it is possible to reduce the capacity of the take-up motor of the take-up unit, and it is not necessary to speed up the take-up motor.
In addition, the above-described configuration in which the peeling position of the recording medium is detected by a sensor and the drive of the adhesive belt is stopped so as not to cause an entrainment error is referred to as “preventing an entrainment error by stopping the adhesive belt” below. say.

Here, when the rotational speed of the winding motor, that is, the angular speed is constant, the winding speed of the recording medium is small when the roll diameter of the winding section is small, but the recording medium is wound. As the roll diameter increases, the winding speed of the recording medium increases.
As described above, when the winding speed of the recording medium by the winding unit is gradually increased, the use of the configuration of “preventing a winding error by stopping the adhesive belt” causes the following problems.

When the roll diameter of the winding unit is small, the winding speed is low, so that the recording medium is conveyed at a higher speed by the adhesive belt, and the recording medium is immediately wound by the adhesive belt. In that case, the winding of the recording medium is detected by the sensor, the drive of the adhesive belt is stopped, and the winding unit winds up the recording medium while the adhesive belt is stopped, Eliminating the recording medium.
However, since the winding speed of the recording medium by the winding unit is small as described above, the winding takes time. That is, the time during which the adhesive belt is stopped increases.

  On the other hand, as the roll diameter of the winding unit increases, the winding speed also increases, so that when the recording medium is detected by the sensor and the drive of the adhesive belt is stopped, The time during which the adhesive belt is stopped is shortened.

The average speed of conveyance of the recording medium by the adhesive belt (hereinafter sometimes referred to as an average feed speed) is smaller as the time during which the adhesive belt is stopped is longer, and is larger as the stop time is shorter.
That is, when the roll diameter is changed from a small diameter to a large diameter due to the winding of the recording medium by the winding unit, the winding speed of the winding unit gradually increases, and accordingly, the average feeding of the adhesive belt is increased. The speed also increases in accordance with the change in the winding speed.

Here, in a recording apparatus including the adhesive belt and the winding unit, when recording on a recording medium on the adhesive belt, an image after recording is usually taken up by the recording medium. Drying is performed by a drying unit provided at a position until being wound around the unit.
When the roll diameter of the winding unit is increased and the winding speed is increased, and the average feeding speed of the adhesive belt is also increased accordingly, the recording medium on which recording has been performed reaches the drying unit. The time α and the time β passing through the drying section are shortened.

  That is, while the recording medium is conveyed by the adhesive belt and recording is performed, the drying time (α + β) of the recorded image is gradually shortened. If the drying time of the recorded image becomes non-uniform, there is a risk that the recorded image will be uneven.

  Therefore, an object of the present invention is to use a low-capacity winding motor in the winding unit in a recording apparatus that supports and transports a recording medium by an adhesive belt and winds the recording medium by a winding unit. Thus, high-quality printing is achieved while suppressing entrainment errors in the adhesive belt.

  In order to solve the above problems, a recording apparatus according to a first aspect of the present invention includes an adhesive belt that is stretched around a plurality of rotating bodies and supports and conveys a recording medium, and records on the recording medium. A recording head to perform, a first sensor for detecting that the recording medium is peeled in the first range of the adhesive belt, and the recording medium in a second range within the first range of the adhesive belt. A second sensor that detects that the recording medium has been peeled off, a winding unit that winds up the recording medium, and a control unit that controls rotation of the winding unit and movement of the adhesive belt. The recording medium is transported at an average feed speed VA by switching between the moving state and the stopped state of the adhesive belt while rotating the winding unit at a constant angular speed, and the recording medium is conveyed in the second range. The second sensor so that the recording medium is peeled off. Switching between the stopped state to the moving state based on the information, the includes a first mode for controlling the average feed speed VA at a constant average feed rate VC, it is characterized in.

  The “adhesive belt” means a belt coated with an adhesive that holds the recording medium in a peelable manner on the surface that supports the recording medium.

  The control unit switches between the moving state and the stopped state based on information of the second sensor so that the recording medium peels in the second range, and sets the average feed speed VA to a constant average feed speed. A first mode for controlling to VC is provided.

  According to this aspect, the average feeding speed VA of the adhesive belt is set so that the recording medium peels in the second range that is upstream from the winding unit and downstream from the adhesive belt. Since it is controlled to a constant average feed speed VC, the recording medium can be sent downstream at a constant average feed speed VC while suppressing the entanglement error in the adhesive belt, thereby realizing high-quality printing. Can do.

  The recording apparatus according to a second aspect of the present invention is characterized in that, in the first aspect, the control unit controls the constant average feed speed VC by controlling a stop time t0 of the adhesive belt. It is what.

  According to this aspect, the same effect as the first aspect can be obtained because the constant average feed speed VC is controlled by controlling the stop time t0 of the adhesive belt.

  The recording apparatus according to a third aspect of the present invention is the recording apparatus according to the first aspect or the second aspect, wherein the first mode is first detected by the second sensor that the peeling position is in the second range. It is characterized by being started.

  The recording apparatus according to a fourth aspect of the present invention is the recording apparatus according to any one of the first to third aspects, wherein the average feed speed VC of the adhesive belt in the first mode is the first mode. It is the same as the winding speed V1 at the start.

  The recording apparatus according to a fifth aspect of the present invention is the recording apparatus according to any one of the first to third aspects, wherein the average feed speed VC of the adhesive belt in the first mode is the value at the start of the first mode. The winding speed can be set to a value equal to or lower than V1.

  The recording apparatus according to a sixth aspect of the present invention is the recording apparatus according to any one of the first to fifth aspects, wherein the control unit is configured such that the separation position of the recording medium is within the second range by the second sensor. Is detected, the movement of the adhesive belt is stopped, and when the second sensor detects that the recording medium is out of the second range, the movement of the adhesive belt is started. It is characterized by having a second mode in which this is repeated.

  According to this aspect, by providing the second mode, it is possible to perform recording with higher productivity.

  The recording method according to the seventh aspect of the present invention includes a step of supporting and transporting a recording medium on an adhesive belt stretched around a plurality of rotating bodies, and a step of recording on the recording medium by a recording head Detecting the separation of the recording medium in the first range of the adhesive belt by a first sensor; and detecting the target in a second range within the first range of the adhesive belt by a second sensor. A step of detecting that the recording medium is peeled, a step of winding the recording medium by a winding unit, and a moving state and a stopped state of the adhesive belt while rotating the winding unit at a constant angular velocity. The recording medium is transported at an average feed speed VA, and the moving state and the stopping state are switched based on the information of the second sensor so that the recording medium is peeled off in the second range. Average feed speed VA It is characterized in that it comprises the the steps of performing a first mode for controlling the constant average feed rate VC.

  According to this aspect, the same effect as in the first aspect can be obtained.

1 is a schematic side view illustrating a recording apparatus according to an embodiment of the invention. 1 is a block diagram of a recording apparatus according to an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of a recording apparatus according to an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of a recording apparatus according to an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of a recording apparatus according to an embodiment of the present invention. The figure which shows the relationship between the average feeding speed of the adhesive belt in 1st mode, the state of the movement and stop of the adhesive belt 2, and the detection by a 2nd sensor. The figure which shows the relationship between the average feeding speed of the adhesive belt in 2nd mode, the state of the movement of the adhesive belt 2, a stop state, and the detection by a 2nd sensor.

  Hereinafter, a recording apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. The present invention is not limited by these.

[Example 1]
FIG. 1 is a schematic side view showing a recording apparatus 1 according to an embodiment of the present invention.
The recording apparatus 1 of the present embodiment includes an adhesive belt 2 that is stretched around a driving roller 3 and a driven roller 4 that rotate in the rotation direction C, and that supports the recording medium P and conveys it in the conveyance direction A. In other words, the adhesive belt 2 is a conveyance belt that is stretched around a plurality of rotating bodies and supports and conveys the recording medium P. The recording apparatus 1 of the present embodiment includes two rollers, ie, a driving roller 3 and a driven roller 4 as a plurality of rotating bodies, but may include three or more rollers, of which a plurality are driving rollers. May be.
The “adhesive belt” means a belt coated with an adhesive that holds the recording medium in a peelable manner on the surface that supports the recording medium.

  In addition, a recording head 6 including an ink discharge portion F that discharges ink is provided in the conveyance path of the recording medium P by the adhesive belt 2. The recording apparatus 1 forms a desired image by ejecting ink from the ink ejection unit F onto the recording medium P while reciprocating the recording head 6 in the direction B intersecting the transport direction A via the carriage 5.

  When the recording head 6 that performs recording while reciprocating is used, recording is performed by reciprocating the recording head 6 while the conveyance of the recording medium P is stopped. Therefore, conveyance by the adhesive belt 2 is performed intermittently. More specifically, recording is performed by ejecting ink from the ink ejection portion F of the recording head 6 to the recording medium P, and conveyance of the recording medium P performed by moving the adhesive belt 2 by a predetermined amount. Repeated. That is, the recording head 6 performs intermittent recording, and the adhesive belt 2 is intermittently driven accordingly.

  In the “intermittent drive”, the rotating body 3 is continuously driven so as to move the adhesive belt 2 by a predetermined amount d, and when the predetermined amount d is sent, the driving of the rotating body 3 is stopped for a predetermined time and the adhesive belt 2 This is a driving method in which the belt 2 is stopped and the adhesive belt 2 is switched between a moving state and a stopped state alternately.

The recording apparatus 1 of the present embodiment includes the recording head 6 that performs recording while reciprocating. However, the recording apparatus includes a so-called line head in which a plurality of nozzles that eject ink are provided in a direction intersecting the transport direction A. But you can.
Here, the “line head” is provided so that the nozzle region formed in the crossing direction intersecting the transport direction A of the recording medium P can cover the entire crossing direction of the recording medium P. The recording head is used in a recording apparatus that forms an image by fixing one of the recording head and the recording medium and moving the other. The area of the nozzles in the cross direction of the line head may not be able to cover the entire cross direction of all the recording media P supported by the recording apparatus. In the case of a recording apparatus including such a line head, the adhesive belt 2 can be configured to continuously convey the recording medium P.

  In the recording apparatus 1 of the present embodiment, the recording medium P is peeled off from the adhesive belt 2 within a predetermined range and is wound by a winding unit 8 via a driven roller 7 fixed at a predetermined position, as will be described later. It is wound up by. The winding unit 8 rotates the recording medium P in the rotation direction C when winding the recording medium P.

The winding unit 8 is controlled by a control unit 11 to be described later so as to rotate at a constant angular velocity ω1. When the angular velocity ω <b> 1 of the winding unit 8 is constant, the winding speed of the recording medium P increases as the roll diameter of the winding unit 8 increases due to winding of the recording medium P. Therefore, the constant angular velocity ω <b> 1 of the winding unit 8 is set small, so that a low-capacity motor can be used for the winding unit 8.
At this time, at the initial stage where the winding amount of the recording medium P in the winding unit 8 is small and the roll diameter is small, the winding speed of the winding unit 8 is low.

Further, a heater H for heating and drying an image formed by ejecting ink onto the recording medium P is provided between the winding unit 8 and the driven roller 7. The formed image is naturally dried after the ink is ejected from the ink ejection part F until it reaches the heater H, and then is heated and dried by passing through a heating region by the heater H.
The recording medium P after recording is wound up by the winding unit 8 through the natural drying and drying by heat drying.

Between the position where the recording medium P is peeled from the adhesive belt 2 and the position where the driven roller 7 is provided along the conveyance path of the recording medium P, the first sensor 9 and the second sensor 10 Is provided.
Here, the first sensor 9 and the second sensor 10 irradiate light from a direction intersecting the surface of the recording medium P, and receive reflected light from the surface of the recording medium P, thereby receiving the first sensor. 9 and an optical sensor capable of detecting the position of the recording medium P at the position of the second sensor 10, by detecting the position of the recording medium P at the position of the first sensor 9 and the second sensor 10. The position where the recording medium P is peeled off from the adhesive belt 2 can be detected.
For this reason, for example, by using an optical sensor configured to receive a reflected light from the reflecting portion provided on the side facing the irradiating portion, the light is irradiated from the direction along the surface of the recording medium P, and By detecting that the reflected light is blocked by the recording medium P, the detection accuracy is higher than the conventional method of detecting that the recording medium P is peeled from the adhesive belt 2. In such a conventional method, since the length (thickness) in the direction intersecting the surface of the recording medium P is short, the detection timing by the optical sensor and the timing at which the reflected light is blocked by the recording medium P This is because a misdetection may occur due to the deviation.

Next, the electrical configuration of the recording apparatus 1 of the present embodiment will be described.
FIG. 2 is a block diagram of the recording apparatus 1 of the present embodiment.
The control unit 11 is provided with a CPU 12 that controls the entire recording apparatus 1. The CPU 12 is connected via a system bus 13 to a ROM 14 that stores various control programs executed by the CPU 12, a maintenance sequence, and the like, and a RAM 15 that can temporarily store data.

The CPU 12 is connected to a head drive unit 16 for driving the recording head 6 via the system bus 13.
The CPU 12 is a drive source of a drive roller 3 as a moving mechanism of the carriage belt 18 for moving the carriage 5 and the recording belt P that supports and conveys the recording medium P via the system bus 13. It is connected to a motor drive unit 17 for driving the transport motor 19 and a winding motor 20 that is a drive source of the winding unit 8.
The CPU 12 is connected via a system bus 13 to a heater driving unit 23 for driving a heater H that heats and drys an image formed on the recording medium P.
Further, the CPU 12 is connected to the input / output unit 21 via the system bus 13, and the input / output unit 21 inputs the first sensor 9, the second sensor 10, the recording data, etc. to the recording apparatus 1. Is connected to the PC 22. The PC 22 includes a GUI (graphical user interface) 24.

Next, it will be described in further detail with reference to an enlarged view of a main part of the recording apparatus 1 of the present embodiment.
3 to 5 are enlarged views of main parts of the recording apparatus 1 of the present embodiment.

3 to 5, the first sensor 9 detects whether or not the recording medium P exists in the detection range of the length L1 (whether or not the reflected light from the surface of the recording medium P is incident). By doing so, it is possible to detect whether or not the peeling position 25 of the recording medium P with respect to the adhesive belt 2 is within the first range R1. That is, the first sensor 9 detects that the recording medium P is peeled from the adhesive belt 2 in the first range R1.
The second sensor 10 detects whether or not the recording medium P exists in the detection range of the length L2 (whether or not the reflected light from the surface of the recording medium P is incident). It is possible to detect whether or not the peeling position 25 of the recording medium P with respect to the conductive belt 2 is within the second range R2 within the first range R1. That is, the second sensor 10 detects that the recording medium P is peeled from the adhesive belt 2 in the second range R2 within the first range R1.

FIG. 3 shows a state in which the peeling position 25 of the recording medium P is within the first range R1 but outside the second range R2. FIG. 4 shows a state where the peeling position 25 of the recording medium P is outside the first range R1 (that is, outside the second range R2). FIG. 5 shows a state where the peeling position 25 of the recording medium P is within the first range R1 and also within the second range R2.
That is, on the basis of the state of FIG. 3, the state in which the winding speed of the recording medium P by the winding unit 8 is higher than the conveying speed of the recording medium P by the adhesive belt 2 continues, When the movement is stopped and the recording medium P is continuously wound by the winding unit 8, the state shown in FIG. Then, the state in which the winding speed of the recording medium P by the winding unit 8 is slower than the conveying speed of the recording medium P by the adhesive belt 2 continues or the winding of the recording medium P by the winding unit 8 is stopped. If the adhesive belt 2 continues to move, the state shown in FIG. 5 is obtained.

Here, the control unit 11 controls the winding unit 8 to wind up the recording medium P when the first sensor 9 detects that the separation position 25 of the recording medium P is within the first range R1. 3 and 5 show a state in which the separation position 25 of the recording medium P is within the first range R1, and the winding unit 8 moves the recording medium P in the rotation direction C under the control of the control unit 11. The winding state is shown.
FIG. 4 shows a state in which the peeling position 25 of the recording medium P is outside the first range R1, and the winding operation of the recording medium by the winding unit 8 is stopped by the control of the control unit 11. The drive roller 3 is intermittently driven in the rotational direction C along with the intermittent recording by the recording head 6.

The control unit 11 has a first mode described with reference to FIG.
In the first mode, the adhesive belt 2 is switched between the moving state and the stopped state based on the information of the second sensor 10 so as to peel from the recording medium P adhesive belt 2 in the second range R2, and the adhesive belt. 2 is controlled to a constant average feed speed VC.

When the recording medium P is transported by switching between the moving state and the stopped state of the adhesive belt 2, the winding of the recording medium P by the winding unit 8 continues even when the adhesive belt 2 is in the stopped state. ing.
Thereby, even if the adhesive belt 2 stops, the recording medium P can be continuously wound by the winding unit 8.

  In addition, since the average feed speed VA of the adhesive belt 2 is controlled to a constant average feed speed VC, the recording medium P is moved downstream at the constant average feed speed VC while suppressing the entanglement error in the adhesive belt 2. Can be sent to.

  Accordingly, it is possible to make the arrival time from the recording by the discharge unit to the heater H provided on the upstream side of the winding unit 8 constant, for example. That is, since it is possible to reduce variation in the drying time of the image after recording, high-quality printing can be realized.

In the recording apparatus 1 according to the present embodiment, the moving state of the adhesive belt 2 that is intermittently driven is such that a predetermined amount d corresponding to the intermittent recording by the recording head 6 is sent by one drive. Driving is performed while the moving speed VB and the moving time tB during the movement are set to be constant.
Therefore, the average feed speed VA of the adhesive belt 2 can be changed by changing the stop time t0 of the adhesive belt 2 that is intermittently driven. When the stop time t0 is short, the average feed speed VA increases, and when the stop time t0 is long, the average feed speed VA decreases.
Further, by making the stop time t0 constant, the average feed speed VA by the adhesive belt 2 becomes constant.

Here, when recording is performed and the recording medium P is wound around the winding unit 8, the winding speed of the winding unit 8 gradually increases. Therefore, the maximum average feed speed Vmax of the adhesive belt 2 is The size is set so as to correspond to the winding speed when the roll diameter of the winding unit 8 increases. The stop time t0 when the average feed speed VA becomes the maximum average feed speed Vmax is tmin.
When the control by the control unit 11 is not performed, the adhesive belt 2 is intermittently driven at the maximum average feed speed Vmax.

  Next, the adhesive belt 2 is switched between the moving state and the stopped state based on the information of the second sensor 10 so that the recording medium P peels from the adhesive belt 2 in the second range R2. The configuration for controlling the average feed speed VA to a constant average feed speed VC will be described in more detail.

FIG. 6 shows the average feed speed (upper stage) of the adhesive belt 2 when the first mode is performed, the state of movement and stop of the adhesive belt 2 (middle stage), and detection by the second sensor (lower stage). Showing the relationship.
First, at the start of recording, when recording is started from a state where the peeling position 25 of the recording medium P is within the first range R1 but outside the second range R2, the control by the control unit 11 is not performed. Therefore, the adhesive belt 2 is intermittently driven at the maximum average feed speed Vmax, that is, the stop time t0 = tmin.

When the recording apparatus 1 starts recording, for example, when the winding unit 8 is substantially in the state of a core tube and the winding speed of the recording medium P by the winding unit 8 is low, the winding unit 8 winds up. Since the feeding amount of the adhesive belt 2 is larger than the amount, if the recording is continued, the peeling position 25 of the recording medium P enters the second range R2.
FIG. 5 shows a state where the peeling position 25 of the recording medium P is within the second range R2, and the rotation of the driving roller 3 is stopped so as to stop the movement of the adhesive belt 2 under the control of the control unit 11. It represents the state of being.

When the second sensor 10 detects the peeling position 25, the control unit 11 controls the drive roller 3 to stop the movement of the adhesive belt 2. The movement of the adhesive belt 2 is stopped in accordance with the timing when the rotating body is not driven due to intermittent driving. Time T1 is the time when the second sensor 10 first detects the peeling position 25 after the start of recording. In the present embodiment, the first mode is started when the recording is started and the second sensor 10 detects the recording medium P for the first time.
In the lower graph of FIG. 6, the state where the second sensor 10 detects the peeling position 25 is represented as ON, and the state where it is not detected is represented as OFF.

When the adhesive belt 2 is stopped, only the winding unit 8 is rotationally driven to wind up the recording medium P. When the peeling position 25 deviates from the second range R2 (FIG. 3), the second sensor 10 is in a state where the peeling position 25 is not detected (OFF), and the movement of the adhesive belt 2 is started and enters a moving state.
Time T2 (see the middle graph in FIG. 6) is a time when the second sensor 10 no longer detects the peeling position 25 and the movement of the adhesive belt 2 is resumed.
At this time, the time during which the adhesive belt 2 is stopped, that is, the time T2-the time T1 is referred to as a stop time t1.

  After acquiring the stop time t1, the stop time t0 in the stop state of the adhesive belt 2 in the intermittent drive after the time T2 is set to a constant value of the acquired t1. Accordingly, the average feeding speed VA of the adhesive belt can be controlled to a constant average feeding speed VC so that the recording medium P is peeled from the adhesive belt 2 in the second range R2.

  The stop time t1 is a time during which detection of the second sensor 10 can be turned off from ON when the recording medium P is wound at the winding speed V1 of the winding unit 8 at the start of recording in the first mode. It is. By setting the stop time t0 = t1, the constant average feed speed VC of the adhesive belt 2 can be set to a speed corresponding to the winding speed V1 of the winding unit 8 at the start of the first mode. That is, the average feed speed VC can be made substantially the same as the winding speed V1.

  It is desirable that the constant average feed speed VC by the adhesive belt 2 is the same as the winding speed V1 of the winding unit 8 at the start of the first mode. The average feed speed VC is “same” as the take-up speed V1 of the take-up unit 8 is the same value as that of the take-up part 8, and the amount of take-up of the take-up part 8 and the feed by the adhesive belt 2 Including the case where the amount is almost equal.

The winding speed V1 of the winding unit 8 is calculated by obtaining the radius r1 of the winding unit 8 based on the information of the integrated winding amount of the recording medium P and the thickness of the recording medium P in the winding unit 8. (V1 = r1 · ω1).
The winding unit 8 may be provided with a sensor that detects the radius of the winding unit 8 and a speed sensor that directly measures the winding speed V1.

Further, the stop time t0 may be set longer than the stop time t1. If the stop time is lengthened, the average feed speed VC becomes smaller. Accordingly, since the winding speed V1 is larger than the constant average feed speed VC, it is possible to reliably prevent the recording medium P from being caught by the adhesive belt 2.
The constant average feed speed VC by the adhesive belt 2 can be set by the user at a value equal to or lower than the winding speed V1 of the winding unit 8 at the start of the first mode.

In addition, if the constant speed conveyance for switching the moving state and the stopped state of the adhesive belt 2 is continued at the stop time t0 = t1, the winding speed of the winding unit 8 gradually increases. As shown in the graph, the second sensor 10 is turned off while the adhesive belt 2 is stopped. However, during the first mode, the stop state at the stop time t0 = t1 is prioritized.
Further, since the winding speed of the winding unit 8 increases during the first mode, if the conveyance at the constant average feed speed VC set at the start of the first mode is continued, the recording medium P is recorded. The peeling position moves out of the second range R2 and moves to the first range R1.

Note that the first mode can be executed by setting a constant t0 without performing the step of obtaining the stop time t1. For example, the ROM 14 is preliminarily provided with data on the relationship between the integrated winding amount of the recording medium P in the winding unit 8 and the stop time t1, and the first mode is calculated from the integrated winding amount of the recording medium P recorded on the PC 22. A stop time t1 that can be acquired when the start time is performed may be obtained, and a constant value may be determined based on the stop time t1.
The start of the first mode can also be started by a user instruction. The user's instruction is performed by pressing a start button displayed on the GUI 24, for example.

  The first mode is canceled when the recording of one image is completed. Also, it can be canceled by a user instruction. The user's instruction is performed, for example, by pressing a release button displayed on the GUI 24.

  Furthermore, it can also be controlled so as to be canceled when the recording length in the first mode exceeds a specified value. If the recording is continued, the roll diameter of the winding unit 8 becomes large, and the winding speed becomes gradually faster than the winding speed V1 at the start of the first mode. On the other hand, since the adhesive belt 2 is controlled to a constant average feed speed VC, if the recording becomes longer and the take-up speed of the winding unit 8 exceeds the average feed speed VC, the peeling position 25 of the recording medium P is reached. Is outside the first range R1. When the peeling position 25 of the recording medium P is outside the first range R1, it is detected by the first sensor 9 and the rotation of the winding unit 8 is stopped. Even if it continues as it is, since the adhesive belt 2 is controlled to a constant average feed speed VC, the arrival time to reach the heater H provided on the upstream side of the winding unit 8 should be kept constant. It is possible to reduce the variation in the drying time of the image after recording, but when the rotation of the winding unit 8 is stopped, the rotation of the winding unit 8 does not stop, Since it is possible to reset to a higher average feed speed, the first mode is canceled before the take-up speed of the take-up unit 8 is such that the peeling position 25 of the recording medium P is outside the first range R1. It is also possible to set in advance.

When the first mode is not performed, recording in the following second mode is performed.
In the second mode, the movement of the adhesive belt 2 is stopped when the second sensor 10 detects that the peeling position 25 of the recording medium is within the second range R2, and the second sensor 10 stops the movement of the recording medium P. When it is detected that the peeling position 25 is outside the second range R2, the movement of the adhesive belt 2 is repeatedly performed. FIG. 7 shows the relationship between the average feeding speed of the adhesive belt at this time, the state of movement and stop of the adhesive belt 2, and detection by the second sensor.

When the second mode is executed when the winding unit 8 has a small diameter close to the core tube, the roll diameter of the winding unit 8 increases as recording is performed, and the winding speed of the recording medium P by the winding unit 8 increases. Become. Therefore, when the movement and stop of the adhesive belt 2 are repeated based on the detection of the second sensor 10, the time from the stop of the adhesive belt 2 to the start of the movement is shown in the middle graph of FIG. Gradually becomes shorter. That is, the stop time of the adhesive belt is shortened, and t1>t2>t3>t4> t5.
In the lower graph of FIG. 7, the state where the second sensor 10 detects the peeling position 25 is ON, and the non-detected state is OFF.

  When the stop time of the adhesive belt is shortened, the average feed speed VA of the adhesive belt 2 is gradually increased (see the upper graph in FIG. 7). When the roll diameter of the winding unit 8 becomes sufficiently large, the stop time of the adhesive belt 2 becomes tmin, and the average feed speed VA of the adhesive belt 2 becomes equal to the moving speed Vmax of the adhesive belt 2.

As described above, in the second mode, the average feed speed VA of the adhesive belt 2 increases as the winding speed of the recording medium P by the winding section 8 increases.
According to the second mode, the average feeding speed VA of the adhesive belt 2 is increased in conjunction with the increase of the winding speed of the winding section 8, so that recording with higher productivity can be performed.

[Other Configuration of Recording Apparatus 1]
As described above, the recording apparatus 1 of the present embodiment includes the recording head 6 that reciprocally moves in the direction B that intersects the conveyance direction A of the recording medium P.
Here, the control unit 11 controls the drive roller 3 so that the drive roller 3 is intermittently driven with the reciprocation. When the second sensor 10 detects that the separation position 25 of the recording medium P is within the second range R2 during recording by the recording head 6, the control unit 11 performs the recording of the reciprocating movement. It is desirable to control the moving mechanism of the recording head 6 including the carriage motor 18 and the like so that the recording head 6 is moved to the home position after the recording accompanying the movement in one direction is completed.
By such control of the control unit 11, the recording accompanying the movement in one direction during the reciprocating movement is terminated in the middle, thereby causing a defect in the recorded image, and the previous recording is wasted. The recording head 6 is protected at the home position while suppressing this.

As described above, the recording apparatus 1 of the present embodiment includes the recording head 6 that reciprocally moves in the direction B that intersects the conveyance direction A of the recording medium P.
Here, the control unit 11 controls the drive roller 3 so that the drive roller 3 is intermittently driven with the reciprocation. Then, the second sensor 10 is controlled so as to detect whether or not the peeling position 25 of the recording medium P is within the second range R2 before driving the driving roller 3 accompanying the intermittent driving. And if it is in 2nd range R2, the drive roller 3 is controlled so that the stop of the movement of the adhesive belt 2 may be maintained. And if it is not in 2nd range R2, it is desirable to control the drive roller 3 so that the drive roller 3 drives according to the drive timing of the said drive roller 3 accompanying the said intermittent drive.
By such control of the control unit 11, it is detected whether or not the peeling position 25 of the recording medium P is within the second range R2 with the movement of the adhesive belt 2 stopped. Then, the occurrence of a malfunction in the recording operation is suppressed by stopping the movement of the adhesive belt 2 at a halfway position.

  It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

1 recording device, 2 adhesive belt, 3 driving roller, 4 driven roller,
5 Carriage, 6 Recording head, 7 Driven roller, 8 Winding part,
9 first sensor, 10 second sensor, 11 control unit, 12 CPU,
13 system bus, 14 ROM, 15 RAM, 16 head drive unit,
17 motor drive, 18 carriage motor, 19 transport motor,
20 winding motor, 21 input / output unit, 22 PC, 23 heater drive unit,
24 GUI, 25 Peeling position of the recording medium P,
H heater,
L1 The detection range of the recording medium P by the first sensor 9;
L2 The detection range of the recording medium P by the second sensor 10,
P Recording medium, R1 first range, R2 second range

Claims (7)

An adhesive belt that is stretched around a plurality of rotating bodies and supports and conveys a recording medium;
A recording head for recording on the recording medium;
A first sensor for detecting that the recording medium is peeled in a first range of the adhesive belt;
A second sensor for detecting that the recording medium has peeled in a second range within the first range of the adhesive belt;
A winding unit for winding the recording medium;
A control unit for controlling the rotation of the winding unit and the movement of the adhesive belt,
The controller is
While rotating the winding part at a constant angular velocity, the adhesive belt is moved between a moving state and a stopped state, and the recording medium is conveyed at an average feed speed VA.
Based on the information of the second sensor, the moving state and the stop state are switched based on the information of the second sensor so that the recording medium is peeled in the second range, and the average feed speed VA is controlled to a constant average feed speed VC. Has one mode,
A recording apparatus. The recording apparatus according to claim 1,
The recording apparatus according to claim 1, wherein the control unit controls the constant average feed speed VC by controlling a stop time t0 of the adhesive belt. The recording apparatus according to claim 1 or 2,
The recording apparatus according to claim 1, wherein the first mode is started when the second sensor first detects that the peeling position is in the second range. The recording apparatus according to any one of claims 1 to 3,
The recording apparatus according to claim 1, wherein an average feed speed VC of the adhesive belt in the first mode is the same as the winding speed V1 at the start of the first mode. The recording apparatus according to any one of claims 1 to 3,
The recording apparatus according to claim 1, wherein an average feed speed VC of the adhesive belt in the first mode can be set to a value equal to or less than the winding speed V1 at the start of the first mode. The recording apparatus according to any one of claims 1 to 5,
The controller is
When the peeling position of the recording medium is detected by the second sensor to be within the second range, the movement of the adhesive belt is stopped, and the peeling position of the recording medium is set by the second sensor. A second mode in which the movement of the adhesive belt is repeatedly started when it is detected to be out of two ranges;
A recording apparatus. A step of supporting and transporting a recording medium on an adhesive belt stretched around a plurality of rotating bodies;
Recording on the recording medium by a recording head;
Detecting by the first sensor that the recording medium is peeled in the first range of the adhesive belt;
Detecting by the second sensor that the recording medium is peeled in a second range within the first range of the adhesive belt;
A step of winding the recording medium by a winding unit;
While rotating the winding unit at a constant angular velocity, the adhesive belt is moved between a moving state and a stopped state, and the recording medium is conveyed at an average feed speed VA.
Based on the information of the second sensor, the moving state and the stop state are switched based on the information of the second sensor so that the recording medium is peeled in the second range, and the average feed speed VA is controlled to a constant average feed speed VC. Executing one mode;
A recording method comprising:

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