JP6311334B2 - Liquid ejection device and electromagnetic wave curable liquid curing method - Google Patents

Description

  The present invention relates to a liquid ejecting apparatus and an electromagnetic wave curable liquid curing method.

Conventionally, a liquid ejection device that ejects an electromagnetic wave curable liquid to a medium has been used. Such a liquid discharge apparatus is provided with an irradiation unit that irradiates an electromagnetic wave in order to cure the electromagnetic wave curable liquid. If the electromagnetic wave is continuously irradiated from such an irradiating part, the electromagnetic wave curable liquid is cured in the discharging part for discharging the electromagnetic wave curable liquid, which may cause a discharge failure. For this reason, in the state where the irradiation unit is not opposed to the electromagnetic wave curable liquid discharged to the medium, it is preferable to suppress irradiation of the electromagnetic wave from the irradiation unit.
Therefore, for example, Patent Document 1 discloses a printer device that turns off the lamp as the irradiation unit that is movable with respect to the support table when the image receiving member as the medium or the end of the support table intersects the image receiving member. It is disclosed.

JP 2006-56254 A

However, since the printer device disclosed in Patent Document 1 is configured to detect the end portion of the image receiving member or its supporting base, for example, when a transparent image receiving member is used, the detection may be difficult. Further, when detecting the end of the support base, it is impossible to suppress the irradiation of electromagnetic waves from the irradiation section, particularly when the recorded image recorded by the printer device is smaller than the support base.
As described above, in the liquid ejection device that ejects the electromagnetic wave curable liquid to the conventional medium, the irradiation of the electromagnetic wave can be suppressed in a state where the irradiation unit is not opposed to the electromagnetic wave curable liquid ejected to the medium. In other words, the discharge failure when discharging the electromagnetic wave curable liquid could not be suppressed.

  Therefore, an object of the present invention is to suppress ejection failure when ejecting the electromagnetic wave curable liquid.

  In order to solve the above problems, a liquid ejection apparatus according to a first aspect of the present invention includes an ejection unit that ejects an electromagnetic wave curable liquid, a medium support unit that supports a medium, an irradiation unit that radiates electromagnetic waves, and the ejection. Based on the detection result of the detection unit, the moving unit that reciprocates the unit, the irradiation unit, and the medium support unit, the detection unit that can detect the medium or the detection target unit supported by the medium support unit And a control unit that controls the irradiation unit.

Here, the “detected part supported by the medium or the medium supporting part” is a detected part arranged with a relationship with respect to the position of the medium, and is detectable by the detecting part. If it is, the shape, size, material and the like are not particularly limited. Further, even if the medium is manually supported by the user or the medium support unit, the liquid ejecting apparatus automatically performs the operation according to the size of the medium, the size of the image ejected on the medium, or the like. It may be supported.
In addition, the “moving unit that reciprocates the ejection unit and the irradiation unit and the medium support unit” means a configuration that relatively reciprocates the ejection unit and the medium support unit, The liquid discharge apparatus including the moving unit corresponds to a so-called serial type liquid discharge apparatus. Note that examples of the liquid ejecting apparatus including the moving unit include a configuration in which the ejecting unit and the like are reciprocated with respect to a medium supporting unit that supports the medium, and a direction intersecting the reciprocating direction. The thing of the structure which reciprocates the said discharge part etc. with respect to the said medium support part while conveying a medium is mentioned.
According to this aspect, the detected portion can be supported by the medium or the medium support portion according to the size of the medium, the size of an image or the like that is ejected onto the medium, and the like. And the said control part can judge the state which the said irradiation part does not oppose the electromagnetic wave curable liquid discharged to the said medium with high precision, when the said detection part detects a to-be-detected part. Therefore, it is possible to suppress the irradiation of the electromagnetic wave in a state where the irradiation unit is not opposed to the electromagnetic wave curable liquid discharged to the medium. For this reason, the discharge failure at the time of discharging an electromagnetic wave curable liquid can be suppressed.

  In the liquid ejection device according to a second aspect of the present invention, in the first aspect, the moving unit is capable of reciprocating the ejection unit with respect to the medium support unit, and the irradiation unit is reciprocating. The detection unit is provided on at least one side of the discharge unit in the reciprocation direction.

  According to this aspect, the ejection unit, the irradiation unit, and the detection unit can reciprocate with respect to the medium support unit, and are arranged side by side in the reciprocal movement direction. For this reason, for example, when the discharge unit discharges the electromagnetic wave curable liquid only in one direction of the reciprocating movement, the discharge unit discharges the electromagnetic wave curable liquid in the unidirectional movement. The detection unit detects the detected portion, and the control unit controls the irradiation of the electromagnetic wave L of the irradiation unit. Therefore, the electromagnetic wave curable liquid can be efficiently cured.

  In the liquid ejection device according to a third aspect of the present invention, in the second aspect, the irradiation unit is provided on both sides of the ejection unit in the reciprocation direction, and the detection unit is in the reciprocation direction. It is provided on both sides of the discharge part.

  According to this aspect, the irradiation unit is provided on both sides of the discharge unit in the reciprocation direction, and the detection unit is provided on both sides of the discharge unit in the reciprocation direction. Therefore, in both the forward movement and the backward movement of the reciprocating movement, the discharge section discharges the electromagnetic wave curable liquid, the detection section detects the detected section, and the control The unit can control the irradiation of the electromagnetic wave of the irradiation unit. Therefore, the electromagnetic wave curable liquid can be cured more efficiently than in the second embodiment.

  The liquid ejection device according to a fourth aspect of the present invention is the liquid ejection device according to the third aspect, wherein the ejection unit, the irradiation unit, and the detection unit are arranged in the reciprocating direction in the detection unit, the irradiation unit, and the ejection unit. Part, the said irradiation part, and the said detection part are provided in order.

According to this aspect, the ejection unit, the irradiation unit, and the detection unit are provided in the order of the detection unit, the irradiation unit, the ejection unit, the irradiation unit, and the detection unit in the reciprocal movement direction.
Therefore, the control unit can control the irradiation of the electromagnetic wave of the irradiation unit with high accuracy in both the forward movement and the backward movement of the reciprocating movement, and the irradiation unit is applied to the medium. Irradiation of the electromagnetic wave in a state where it is not opposed to the discharged electromagnetic wave curable liquid can be suppressed with high accuracy.
In this aspect, in the direction of the reciprocating movement, if the detection unit, the irradiation unit, the discharge unit, the irradiation unit, and the detection unit are provided in this order, the liquid discharge device is further provided between them. A structural member may be provided.

  The liquid ejection device according to a fifth aspect of the present invention is characterized in that, in the fourth aspect, the detection unit is further provided between the ejection unit and the irradiation unit.

According to this aspect, the detection unit is further provided between the ejection unit and the irradiation unit. That is, for example, in the direction of reciprocation, the detection unit, the irradiation unit, the detection unit, the discharge unit, the detection unit, the irradiation unit, and the detection unit are provided in this order.
For this reason, the control unit can perform irradiation control of the electromagnetic wave of the irradiation unit in both forward movement and backward movement of the reciprocating movement, and the irradiation unit is discharged onto the medium. Irradiation of the electromagnetic wave in a state not facing the electromagnetic wave curable liquid can be suppressed with high accuracy.

  In a liquid ejection device according to a sixth aspect of the present invention, in any one of the first to fifth aspects, the irradiation unit includes a plurality of irradiation elements in a direction intersecting the reciprocating direction. A plurality of the detection units are provided corresponding to the plurality of irradiation elements, and the control unit can individually control the plurality of irradiation elements based on detection results of the plurality of detection units. It is characterized by.

  According to this aspect, the irradiation unit has a plurality of irradiation elements in a direction intersecting the reciprocating direction, and the control unit is provided in a plurality corresponding to the plurality of irradiation elements, and the control unit Can individually control the plurality of irradiation elements based on detection results of the plurality of detection units. For this reason, when using the medium having a greatly different length in the reciprocating direction in the direction intersecting the reciprocating direction or when forming an image or the like, the control unit individually sets the plurality of irradiation elements. By controlling to, the irradiation of the electromagnetic wave in a state where the irradiation unit is not opposed to the electromagnetic wave curable liquid discharged to the medium can be suppressed with high accuracy.

  The liquid ejection device according to a seventh aspect of the present invention is the liquid ejection device according to any one of the first to sixth aspects, wherein the ejection unit and the irradiation unit are positioned relative to the medium support unit based on a detection result of the detection unit. It is characterized by comprising a position detection unit for detecting.

Here, the “position detection unit” is not particularly limited in configuration, for example, a configuration in which the position is measured using a linear encoder or the like, or a configuration in which the position is calculated from a driving time of a motor or the like. Etc.
According to this aspect, the position detection part which detects the said position based on the detection result of the said detection part is provided. For this reason, in addition to the detection result of the said detection part, since the said position detection part can detect the said position, the detection accuracy of the said position becomes high.

  The liquid ejection apparatus according to an eighth aspect of the present invention is characterized in that, in the seventh aspect, the control unit can control the irradiation unit based on a detection result of the position by the position detection unit. To do.

  According to this aspect, the control unit can control the irradiation unit based on a detection result of the position by the position detection unit. For this reason, for example, the detection unit can be detected by the detection unit in an initial operation, and the position detection unit can be controlled to detect the position in the subsequent operation. Can be increased.

  In the liquid ejection device according to a ninth aspect of the present invention, in the eighth aspect, the control unit can determine the consistency between the detection result of the mark detection unit and the detection result of the position by the position detection unit. It is characterized by being.

  According to this aspect, the control unit can determine the consistency between the detection result of the detection unit and the detection result of the position by the position detection unit. For this reason, when an error occurs in the liquid ejection device due to a difference in the position between the detection result of the detection unit and the detection result of the position detection unit, the error is notified or the liquid ejection device The driving can be stopped.

  The method for curing an electromagnetic wave curable liquid according to the tenth aspect of the present invention includes a supporting step of supporting a detected portion on a medium or a medium supporting portion that supports the medium, a detecting step of detecting the detected portion, A step of discharging the electromagnetic wave curable liquid to the medium based on discharge data, and a step of curing the electromagnetic wave curable liquid to irradiate the medium with an electromagnetic wave based on a detection result of the detection step. .

  According to this aspect, in the supporting step, the detected part is supported by the medium or the medium supporting part according to the size of the medium, the size of the image or the like that is ejected onto the medium, and the like. be able to. And by detecting the said to-be-detected part at the said detection process, the state which the irradiation part which irradiates the said electromagnetic wave is not facing the electromagnetic wave curable liquid discharged to the said medium can be judged with high precision. Therefore, it is possible to suppress the irradiation of the electromagnetic wave in a state where the irradiation unit is not opposed to the electromagnetic wave curable liquid discharged to the medium. For this reason, the discharge failure at the time of discharging an electromagnetic wave curable liquid can be suppressed.

1 is a schematic perspective view illustrating a recording apparatus according to a first embodiment of the invention. 1 is a schematic front view illustrating a main part of a recording apparatus according to a first embodiment of the invention. 1 is a schematic front view illustrating a main part of a recording apparatus according to a first embodiment of the invention. FIG. 3 is a schematic plan view illustrating a main part of the recording apparatus according to the first embodiment of the invention. FIG. 3 is a schematic plan view illustrating a main part of the recording apparatus according to the first embodiment of the invention. 1 is a block diagram of a recording apparatus according to Embodiment 1 of the present invention. FIG. 6 is a schematic front view illustrating a main part of a recording apparatus according to a second embodiment of the invention. FIG. 6 is a schematic plan view illustrating a main part of a recording apparatus according to a third embodiment of the invention. FIG. 6 is a schematic side view illustrating a recording apparatus according to a fourth embodiment of the invention. FIG. 6 is a schematic plan view illustrating a main part of a recording apparatus according to a fourth embodiment of the invention. The flowchart showing the hardening method of the electromagnetic wave hardening type liquid which concerns on one Example of this invention.

Hereinafter, a recording apparatus according to an embodiment as a liquid ejection apparatus of the present invention will be described in detail with reference to the accompanying drawings.
[Example 1] (FIGS. 1 to 6)
First, the recording apparatus according to the first embodiment of the invention will be described.
FIG. 1 is a schematic perspective view of a recording apparatus 1 according to this embodiment.

The recording apparatus 1 according to the present exemplary embodiment includes a recording unit 2 including a recording head H as an ejection unit that ejects electromagnetic wave curable ink serving as an electromagnetic wave curable liquid, and an image is formed by ejecting ink from the recording head H. And a medium support part 3 that supports the recording medium (recording medium P).
The recording apparatus 1 according to the present embodiment moves the recording head H in the direction B intersecting the direction A while moving the recording unit 2 in the direction A with respect to the recording medium P supported by the medium support unit 3. Record. This is a so-called flood bed type recording apparatus. However, the liquid ejection apparatus of the present invention is not limited to such a configuration.

  When recording on the recording medium P, the recording apparatus 1 of the present embodiment moves the recording unit 2 in the direction A1 of the directions A and moves the recording head H in the direction B1 (forward direction) of the directions B and Recording is performed while alternately reciprocating in the direction B2 (reverse direction). When the recording is completed, the recording unit 2 is moved in the direction A2 of the directions A.

  Further, the recording apparatus 1 of the present embodiment includes irradiation units IA and IB that irradiate the electromagnetic wave L (see FIG. 2) that can cure the electromagnetic wave curable ink to both ends of the recording head H in the direction B. . Then, a mark that is supported on the recording medium P or the medium support unit 3 by being placed on the side opposite to the recording head H of the irradiation unit IA in the direction B (see the marks MA and MB in FIGS. 2 to 5). The optical sensor DA is provided as a mark detection unit capable of detecting. Note that an optical sensor DB serving as a mark detection unit capable of detecting the mark is provided on the side opposite to the recording head H of the irradiation unit IB in the direction B (see FIGS. 2 to 5).

Note that the mark is a mark (detected portion) arranged with a relationship with respect to the position with respect to the recording medium P, and is formed on the width of the recording medium P (length in the direction B) or on the recording medium P. The user can freely place the image on the recording medium P or the medium support unit 3 in accordance with the width of the image (the length in the direction B). Specific examples of the mark include a tape, an LED, a plate-like magnet, and the like, but are not particularly limited. Moreover, there is no limitation in particular about a material, a magnitude | size, and a shape.
Further, the recording apparatus 1 of the present embodiment is configured such that the user can freely place the mark on the recording medium P or the medium support unit 3. On the other hand, according to the shape and size of the recording medium P or the shape and size of the image formed on the recording medium P, the recording apparatus 1 automatically marks the recording medium P or the medium support unit 3. It is good also as a structure which can be mounted on.

  When the size of the image formed on the recording medium P is smaller than the size of the recording medium P, it may be preferable to support the mark on the recording medium P instead of the medium support unit 3. Many. However, the recording apparatus 1 of the present embodiment can also record on the transparent recording medium P. When recording on the transparent recording medium P, the medium support unit 3 and the recording medium The mark may be set between P.

  The recording apparatus 1 according to the present exemplary embodiment includes an image forming region R (an area in which ink is ejected onto the recording medium P in the direction B or the upper part of the medium support portion 3 on both sides of the recording medium P in the direction B (see FIG. 4 and FIG. 5), it is assumed that the mark is set above the recording medium P on both sides of the recording medium P or between the medium support portion 3 and the recording medium P.

Next, the irradiation timing of the electromagnetic wave L in the irradiation units IA and IB in the recording apparatus 1 of the present embodiment will be described.
2 and 3 are schematic front views showing the main part of the recording apparatus 1 of the present embodiment, and FIGS. 4 and 5 are schematic plan views showing the main part of the recording apparatus 1 of the present embodiment. Specifically, FIGS. 2 and 4 show the irradiation start timing of the electromagnetic wave L of the irradiation units IA and IB when the recording head H is moved in the direction B1, and FIGS. 3 and 5 show the recording head H. The irradiation stop timing of the electromagnetic waves L of the irradiation units IA and IB when moving in the direction B1 is shown.

As shown in FIGS. 2 and 4, when the recording apparatus 1 of this embodiment moves the recording head H in the direction B1, the optical sensor DA faces the mark MA and detects the mark MA. By the control of 12 (see FIG. 6), the electromagnetic waves L can be irradiated from the irradiation units IA and IB.
Note that when the recording head H is moved in the direction B1, the irradiation unit IA is located upstream of the recording head H in the direction B1. For this reason, when the optical sensor DA faces the mark MA and detects the mark MA, the electromagnetic wave L may be irradiated only from the irradiation unit IB that is downstream in the direction B1 from the recording head H. The recording apparatus 1 of the present embodiment can also irradiate the electromagnetic wave L only from the irradiation unit on the downstream side of the reciprocating movement of the recording head H.

  However, the recording apparatus 1 of the present embodiment is configured to perform so-called multi-pass recording in which recording is performed by reciprocating the recording head H a plurality of times in the same portion of the image forming region R. In a recording apparatus configured to perform such multi-pass recording, there is a case where it is not necessary to cure the electromagnetic wave curable ink ejected to the recording medium P in one pass (movement). For example, temporary curing may be performed in the first pass among a plurality of reciprocating movements of the recording head H, and main curing may be performed in the remaining passes. The recording apparatus 1 of the present embodiment has such a configuration that can suppress the irradiation energy of the electromagnetic wave L from the irradiation units IA and IB.

On the other hand, as shown in FIGS. 3 and 5, when the recording apparatus 1 of the present embodiment moves the recording head H in the direction B1, the optical sensor DB faces the mark MB and detects the mark MB. Under the control of the control unit 12, the irradiation of the electromagnetic wave L from the irradiation units IA and IB is stopped.
In this way, the irradiation of the electromagnetic wave L from the irradiation units IA and IB is stopped at a position where the irradiation units IA and IB do not face the electromagnetic wave curable ink ejected onto the recording medium P, whereby the recording medium P and the medium The electromagnetic wave L reflected by the support portion 3 or the like is prevented from reaching the recording head H.
Similarly, when the optical sensor DB moves in the direction B2 from the mark MB side toward the mark MA side, when the optical sensor DB detects the mark MB, the electromagnetic wave L is irradiated from the irradiation units IA and IB, and the optical When the sensor DA detects the mark MA, the irradiation of the electromagnetic wave L from the irradiation units IA and IB is stopped, so that the irradiation unit IA and IB does not face the ink ejected onto the recording medium P. Irradiation is suppressed with high accuracy.

Next, the electrical configuration of the recording apparatus 1 of the present embodiment will be described.
FIG. 6 is a block diagram of the recording apparatus 1 of the present embodiment.
The control unit 12 is provided with a CPU 13 that controls the entire recording apparatus 1. The CPU 13 is connected via a system bus 14 to a ROM 16 that stores various control programs executed by the CPU 13 and a RAM 15 that can temporarily store data.

The CPU 13 is connected to a head driving unit 17 for driving the recording head H via the system bus 14.
The CPU 13 is connected to an irradiation unit driving unit 18 for driving the irradiation units IA and IB via the system bus 14.

The CPU 13 is connected to a motor drive unit 19 for driving the carriage motor 20 and the transport motor 21 via the system bus 14.
Here, the carriage motor 20 is a motor for moving the recording head H and the irradiation units IA and IB in the direction B, and moves the recording head H and the irradiation units IA and IB in the direction B together with a carriage (not shown). The moving part for making it constitute is comprised. The transport motor 21 is a motor for moving the recording unit 2 in the direction A with respect to the medium support unit 3.
Further, the CPU 13 is connected to the input / output unit 22 connected to the PC 24, the optical sensors DA and DB, and the encoder reading unit 23 for transmitting and receiving data and signals such as recording data via the system bus 14. Yes.
Here, the recording apparatus 1 of the present embodiment can recognize the positions of the recording head H and the irradiation units IA and IB in the direction B when the optical sensors DA and DB read the marks MA and MB. Further, a linear encoder (not shown) is provided, and the optical sensors DA and DB start reading the marks MA and MB. Using the linear encoder, the recording head H, the direction B of the irradiation units IA and IB are used. It is possible to recognize the position at. The encoder reading unit 23 is a part that reads the linear encoder.

As described above, the recording apparatus 1 according to the present embodiment includes the recording head H that ejects electromagnetic wave curable ink, the medium support unit 3 that supports the recording medium P, and the irradiation units IA and IB that irradiate the electromagnetic wave L. And. In addition, a carriage (not shown) and a carriage motor 20 that constitute a moving unit that reciprocally moves the recording head H, the irradiation units IA and IB, and the medium support unit 3 are provided. The control unit 12 controls the irradiation units IA and IB based on the detection results of the optical sensors DA and DB that can detect the marks MA and MB supported on the recording medium P or the medium support unit 3.
With such a configuration, the recording apparatus 1 according to the present embodiment records the marks MA and MB according to the size of the recording medium P, the size of the image discharged from the recording medium P, and the like. It can be supported by the medium P or the medium support part 3. Then, the control unit 12 detects that the optical sensors DA and DB detect the marks MA and MB so that the irradiation units IA and IB do not face the electromagnetic wave curable ink ejected onto the recording medium P. Judgment can be made with high accuracy. Therefore, the irradiation of the electromagnetic wave L in a state where the irradiation portions IA and IB are not opposed to the electromagnetic wave curable ink discharged to the recording medium P is suppressed, and the discharge failure when the electromagnetic wave curable ink is discharged is suppressed. doing.
Note that the “moving unit that reciprocates the recording head H, the irradiation units IA and IB, and the medium support unit 3” has a configuration that relatively reciprocates the recording head H and the medium support unit 3. Good. That is, the liquid ejecting apparatus including the moving unit corresponds to a so-called serial type liquid ejecting apparatus. As an example of the liquid ejecting apparatus including the moving unit, in addition to the configuration of the present embodiment, a recording medium in a direction A1 that intersects the reciprocating direction B as in the configuration of Example 4 described later. A configuration in which the recording head H or the like is reciprocated with respect to the medium support unit 3 while conveying P can be used.

Further, as described above, the carriage motor 20 can reciprocate the recording head H with respect to the medium support unit 3, and the irradiation units IA and IB and the optical sensors DA and DB perform recording in the reciprocating direction B. It is provided on both sides of the head H.
On the other hand, if the irradiation unit and the optical sensor are provided on at least one side of the recording head H in the reciprocating direction B, for example, the recording head H discharges ink only in one-way movement of the reciprocating movement. In this case, in the one-way movement, the recording head H ejects ink, the optical sensor detects the marks MA and MB, and the control unit 12 controls the irradiation of the electromagnetic wave L of the irradiation unit. . Therefore, the electromagnetic wave curable ink can be efficiently cured. For this reason, the irradiation unit and the optical sensor may be provided on at least one side of the recording head H in the reciprocating direction B.

  However, as in this embodiment, if the irradiation unit and the optical sensor are provided on both sides of the recording head H in the reciprocating movement direction B, the movement in the forward direction B1 and the returning direction B2 of the reciprocating movement. In both cases, the recording head H ejects ink, the optical sensors DA and DB detect the marks MA and MB, and the control unit 12 can control the irradiation of the electromagnetic wave L of the irradiation units IA and IB. Therefore, the electromagnetic wave curable ink can be cured more efficiently than the configuration including one of the irradiation unit IA or IB and one of the optical sensors DA or DB.

Further, the recording apparatus 1 of this embodiment is provided in the order B of the reciprocating movement in the order of the optical sensor DA, the irradiation unit IA, the recording head H, the irradiation unit IB, and the optical sensor DB.
In the medium support portion 3, the mark MA, the electromagnetic wave curable ink ejection area (image forming area) R, and the mark MB are arranged in this order in the reciprocating direction B.
For example, when the optical sensor DA side moves from the mark MA side toward the mark MB side when the optical sensor DA detects the mark MA, the electromagnetic wave L is emitted from the irradiation unit IB, and the optical sensor DB When the mark MB is detected, the irradiation of the electromagnetic wave L from the irradiation unit IB is stopped, so that the irradiation of the electromagnetic wave L in a state where the irradiation units IA and IB are not opposed to the ink ejected onto the recording medium P is highly accurate. Can be suppressed.
Similarly, for example, when the optical sensor DB side moves from the mark MB side toward the mark MA side, when the optical sensor DB detects the mark MB, the electromagnetic wave L is emitted from the irradiation unit IA, and the optical sensor DA is When the mark MA is detected, the irradiation of the electromagnetic wave L from the irradiation unit IA is stopped, so that the irradiation of the electromagnetic wave L in a state where the irradiation units IA and IB are not opposed to the ink ejected to the recording medium P is performed with high accuracy. Can be suppressed.
Therefore, the control unit 12 controls the irradiation of the electromagnetic waves L of the irradiation units IA and IB with high accuracy in both the movement in the forward direction B1 and the movement in the backward direction B2 of the reciprocating movement, and the irradiation unit 12 Irradiation of the electromagnetic wave L in a state not facing the ink ejected to the recording medium P is suppressed with high accuracy.
In this embodiment, the optical sensor DA, the irradiation unit IA, the recording head H, the irradiation unit IB, and the optical sensor DB are provided in this order in the reciprocating direction. May be provided.

Further, the recording apparatus 1 of the present embodiment includes a linear encoder that constitutes a position detection unit that detects positions of the recording head H and the irradiation units IA and IB with respect to the medium support unit P based on the detection results of the optical sensors DA and DB. An encoder reading unit 23 is provided.
Here, the “position detection unit” is not particularly limited in configuration, and has a configuration in which the position is measured using a linear encoder or the like as in the present embodiment, and the position from the drive time of the carriage motor 20 or the like. It may be configured to calculate
The recording apparatus 1 of the present embodiment includes a linear encoder and an encoder reading unit 23 that detect the position based on detection results of the optical sensor units DA and DB. For this reason, in addition to the detection results of the optical sensors DA and DB, the position can be detected by the linear encoder and the encoder reading unit 23, so that the detection accuracy of the position can be increased.

  Further, the control unit 12 of the recording apparatus 1 of the present embodiment can control the irradiation units IA and IB based on the detection result of the position by the linear encoder and the encoder reading unit 23. In detail, for example, the marks MA and MB are detected by the optical sensors DA and DB in the initial operation, and the position is detected by the linear encoder and the encoder reading unit 23 in the subsequent operation such as the recording operation. As described above, the recording apparatus 1 according to the present embodiment has many options for driving the recording apparatus 1.

  Further, the control unit 12 of the recording apparatus 1 according to the present embodiment can determine the consistency between the detection results of the optical sensors DA and DB and the detection result of the position by the linear encoder and encoder reading unit 23. For this reason, when the detection results of the optical sensors DA and DB and the detection results of the linear encoder and encoder reading unit 23 are different in the position and an error occurs in the recording apparatus 1, the error is transferred to the monitor of the PC 24 or the like. It is possible to perform notification or to stop the drive of the recording apparatus 1.

[Example 2] (FIG. 7)
Next, the recording apparatus of Example 2 will be described in detail with reference to the accompanying drawings.
FIG. 7 is a schematic front view showing the main part of the recording apparatus 1 of the present embodiment. In addition, the structural member which is common in the said Example is shown with the same code | symbol, and abbreviate | omits detailed description.
The recording apparatus 1 of the present embodiment is the same as that of the first embodiment except that the optical sensor Da is provided between the irradiation unit IA and the recording head H and the mark detection unit Db is provided between the recording head H and the irradiation unit IB. The recording apparatus 1 has the same configuration.

As described above, in the recording apparatus 1 of the present embodiment, the optical sensors Da and Db are further provided between the recording head H and the irradiation units IA and IB. That is, in the reciprocation direction B, the optical sensor DA, the irradiation unit IA, the mark detection unit Da, the recording head H, the optical sensor Db, the irradiation unit IB, and the mark detection unit DB are provided in this order.
In the medium support portion 3, the mark MA, the electromagnetic wave curable ink ejection region R, and the mark MB are arranged in this order in the reciprocating direction B.
With such a configuration, for example, when the optical sensor DA side moves from the mark MA side toward the mark MB side, when the optical sensor Da detects the mark MA, the irradiation unit IB emits the electromagnetic wave L, and the optical sensor DB When the mark MB is detected, the irradiation of the electromagnetic wave L from the irradiation unit IB is stopped, so that the irradiation of the electromagnetic wave L in a state where the irradiation units IA and IB are not opposed to the ink ejected onto the recording medium P is highly accurate. Can be suppressed.
Similarly, for example, when the optical sensor DB side moves from the mark MB side toward the mark MA side, when the optical sensor Db detects the mark MB, the electromagnetic wave L is emitted from the irradiation unit IA, and the optical sensor DA is When the mark MA is detected, the irradiation of the electromagnetic wave L from the irradiation unit IA is stopped, so that the irradiation of the electromagnetic wave L in a state where the irradiation units IA and IB are not opposed to the ink ejected to the recording medium P is performed with high accuracy. Can be suppressed.
For this reason, the control unit 12 uses the electromagnetic waves of the irradiation units IA and IB with higher accuracy than the recording apparatus 1 of the first embodiment in both the movement in the forward direction B1 and the movement in the backward direction B2 of the reciprocal movement. The irradiation of the electromagnetic wave L is controlled with high accuracy in a state where the irradiation portions IA and IB are not opposed to the ink ejected onto the recording medium P.
In this embodiment, optical sensors are provided both between the recording head H and the irradiation unit IA and between the recording head H and the irradiation unit IB. The structure provided with the optical sensor may be sufficient.

[Example 3] (FIG. 8)
Next, the recording apparatus of Example 3 will be described in detail with reference to the accompanying drawings.
FIG. 8 is a schematic plan view showing the main part of the recording apparatus 1 of the present embodiment. In addition, the structural member which is common in the said Example is shown with the same code | symbol, and abbreviate | omits detailed description.
The recording apparatus 1 according to the present embodiment includes a plurality of irradiation elements IA1 to IA4 and IB1 to IB4 in a direction A in which the irradiation units IA and IB intersect the reciprocating direction B, and the optical sensors DA and DB include Except that a plurality (optical sensors DA1 to DA4 and DB1 to DB4) are provided corresponding to the plurality of irradiation elements IA1 to IA4 and IB1 to IB4, the configuration is the same as that of the recording apparatus 1 of the first embodiment.

As described above, the recording apparatus 1 of the present embodiment has a plurality of irradiation elements IA1 to IA4 and IB1 to IB4 in the direction A intersecting with the reciprocating direction B as an irradiation unit. As a mark detection unit, a plurality of optical sensors DA1 to DA4 and DB1 to DB4 are provided corresponding to the plurality of irradiation elements IA1 to IA4 and IB1 to IB4. And the control part 12 can control several irradiation element IA1-IA4 and IB1-IB4 separately based on each detection result of optical sensor DA1-DA4 and DB1-DB4. For this reason, as shown in FIG. 8, when using the recording medium P whose length in the direction B is significantly different in the direction A or when forming an image or the like, the control unit 12 has a plurality of irradiation elements IA1 to IA1. IA4 and IB1 to IB4 can be controlled individually.
For example, in FIG. 8, since the optical sensors DA1 and DA2 detect the mark MA, the control unit 12 irradiates the electromagnetic wave L from the irradiation elements IA1, IA2, IB1, and IB2. On the other hand, since the optical sensors DA3 and DA4 do not detect the mark MA, the irradiation of the electromagnetic wave L from the irradiation elements IA3, IA4, IB3 and IB4 is stopped.
As described above, the recording apparatus 1 according to the present embodiment can suppress the irradiation of the electromagnetic wave L with high accuracy in a state where the irradiation units IA and IB are not opposed to the ink ejected to the recording medium P.

[Example 4] (FIGS. 9 to 10)
Next, a recording apparatus of Example 4 will be described in detail with reference to the accompanying drawings.
FIG. 9 is a schematic side view showing the recording apparatus 1 of this embodiment, and FIG. 10 is a schematic plan view showing the main part of the recording apparatus 1 of this embodiment. In addition, the structural member which is common in the said Example is shown with the same code | symbol, and abbreviate | omits detailed description.
Note that the recording apparatus 1 of the present embodiment is not a so-called flood bed type recording apparatus, but a recording apparatus configured to convey the recording medium P to the recording unit 2 for recording.

The recording apparatus 1 of this embodiment includes a support shaft 4 that supports a roll R1 of a roll-shaped recording medium P for recording. When the recording apparatus 1 of the present embodiment transports the recording medium P in the transport direction A, the support shaft 4 rotates in the rotation direction C. In this embodiment, a roll-type recording medium P wound so that the recording surface is on the outer side is used. However, a roll-type recording medium P is wound so that the recording surface is on the inner side. When the recording medium P is used, the roll R1 can be sent out by rotating in the reverse direction to the rotation direction C of the support shaft 4.
Further, the recording apparatus 1 of the present embodiment uses a roll type recording medium as the recording medium P, but is not limited to a recording apparatus that uses such a roll type recording medium. For example, a single-sheet recording medium may be used.

Further, the recording apparatus 1 of the present embodiment includes a transport unit 9 including a plurality of transport rollers (not shown) for transporting the recording medium P in the transport direction A. The transport section 9 is provided with a platen heater 5 that can heat the recording medium P supported by the medium support section 3.
The platen heater 5 of this embodiment is an infrared heater that is provided at a position facing the medium support portion 3 and can heat the surface of the recording medium P from 35 ° C. to 50 ° C. However, the heater is limited to such a heater. Alternatively, a heater capable of heating the recording medium P from the medium support portion 3 side may be used. Here, a preferable infrared wavelength is 0.76 to 1000 μm. In general, infrared rays are further classified into near infrared rays, middle infrared rays, and far infrared rays depending on the wavelength, and the definitions of the divisions are various, but the wavelength ranges are approximately 0.78 to 2.5 μm, 2.5 to 4. 0 μm, 4.0 to 1000 μm. Among these, it is preferable to use mid-infrared rays.

  Further, the recording apparatus 1 of the present embodiment mounts a recording head H as a recording unit on a carriage (not shown) in a direction B intersecting the conveyance direction A of the recording medium P, and reciprocally moves a plurality of nozzles. A recording unit 2 is provided for recording by discharging ink from the nozzles on the nozzle surface F provided.

Further, the recording apparatus 1 of the present embodiment is also configured such that the recording apparatus 1 of the present embodiment cures the electromagnetic wave curable ink at both ends of the recording head H in the direction B, as in the recording apparatus 1 of the first embodiment. Irradiation parts IA and IB for irradiating possible electromagnetic waves L are provided. On both sides of the recording head H in the direction B, there are provided optical sensors DA and DB as mark detection units capable of detecting the marks MA and MB formed on the medium pressing unit 11.
The medium pressing unit 11 is configured to be movable in the direction B according to the width of the recording medium P used by the user.

  On the downstream side of the transport unit 9 and the recording unit 2 in the transport direction A of the recording medium P, a drying unit 10 that dries the recording medium P transported to the medium support unit 6 by an after heater 7 constituted by an infrared heater. It has. The after heater 7 is an infrared heater capable of heating the surface of the recording medium P from 60 ° C. to 120 ° C. in order to dry the ink used in the recording apparatus 1 of the present embodiment, but is not limited to such a heater. . Moreover, as a drying part, ventilation apparatuses, such as a fan other than heating apparatuses, such as an infrared heater, may be sufficient.

  A take-up shaft 8 capable of winding the recording medium P as a roll R2 is provided on the downstream side in the transport direction A of the recording medium P of the drying unit 10. In this embodiment, since the roll type recording medium P wound so that the recording surface is on the outer side is used, when the recording medium P is wound, the winding shaft 8 is rotated in the direction of rotation C. Rotate to. On the other hand, when using a roll-type recording medium P that is wound so that the recording surface is on the inside, the roll R1 can be wound up by rotating in the reverse direction to the rotation direction C.

[Example of Curing Method of Electromagnetic Curing Liquid] (FIG. 11)
Next, a method for curing the electromagnetic wave curable liquid of this example will be described.
FIG. 11 is a flowchart showing a method for curing an electromagnetic wave curable liquid according to this embodiment.
The electromagnetic wave curable liquid curing method of this embodiment is an embodiment performed using the recording apparatus 1 of the first embodiment.

In the electromagnetic wave curable liquid curing method of the present embodiment, first, the marks MA and MB are supported on the recording medium P or the medium supporting unit 3 by the user in the mark supporting step of Step S110.
When the marks MA and MB are supported on the recording medium P or the medium support unit 3 by the user, the recording apparatus 1 then detects the marks MA and MB by the optical sensors DA and DB in the mark detection process of step S120. To do. The mark detection process may be performed together with the recording operation (the curing process in step S130) or may be performed as an initial operation performed before the recording operation.
Then, in the curing process of step S130, ink is ejected to the recording medium P based on the recording data (ejection data), and from the irradiation units IA and IB based on the detection result of the mark detection process of step S120. Irradiate P with an electromagnetic wave L.
In the electromagnetic wave curable liquid curing method of the present embodiment, in the mark supporting step, the marks MA and MB are selected in accordance with the size of the recording medium P, the size of the image discharged from the recording medium P, and the like. Can be supported by the recording medium P or the medium support unit 3. Then, by detecting the marks MA and MB in the mark detection step, it is possible to determine with high accuracy whether the irradiated portions IA and IB are not facing the ink ejected onto the recording medium P. Therefore, it is possible to suppress irradiation of the electromagnetic wave L in a state where the irradiation units IA and IB are not opposed to the ink ejected onto the recording medium P. For this reason, it is possible to suppress ejection defects when ejecting ink.

1 recording device (liquid ejection device), 2 recording unit, 3 medium support unit, 4 support shaft,
5 Platen heater, 6 Medium support, 7 After heater, 8 Winding shaft,
9 transport unit, 10 drying unit, 11 medium pressing unit, 12 control unit, 13 CPU,
14 system bus, 15 RAM, 16 ROM, 17 head drive unit,
18 irradiation unit driving unit, 19 motor driving unit, 20 carriage motor (moving unit),
21 transport motor, 22 input / output unit, 23 encoder reading unit (position detection unit),
24 PC, DA, Da, DB, Db Optical sensor, IA, IB irradiation unit,
H recording head, L electromagnetic wave, P recording medium, R image forming area,
R1 roll of recording medium, R2 roll of recording medium

Claims (8)

A discharge unit for discharging the electromagnetic wave curable liquid;
A medium support for supporting the medium;
An irradiating unit for irradiating electromagnetic waves;
A moving unit for reciprocating the discharge unit and the irradiation unit;
A detection unit capable of detecting the medium or a detection target supported by the medium support unit;
A control unit for controlling the irradiation unit based on a detection result of the detection unit;
Equipped with a,
The irradiation unit has a plurality of irradiation elements in a direction crossing the reciprocating direction,
A plurality of the detection units are provided corresponding to the plurality of irradiation elements,
The controller controls the plurality of irradiation elements based on detection results of the plurality of detection units.
A liquid ejecting apparatus which can be individually controlled . The liquid ejection apparatus according to claim 1,
The moving unit is capable of reciprocating the ejection unit with respect to the medium support unit,
The irradiation unit is provided on at least one side of the discharge unit in the reciprocating direction,
The liquid ejecting apparatus according to claim 1, wherein the detecting unit is provided on at least one side of the ejecting unit in the reciprocating direction. The liquid ejection apparatus according to claim 2, wherein
The irradiation unit is provided on both sides of the discharge unit in the reciprocating direction,
The liquid ejecting apparatus according to claim 1, wherein the detecting unit is provided on both sides of the ejecting unit in the reciprocating direction. The liquid ejection apparatus according to claim 3, wherein
The ejection unit, the irradiation unit, and the detection unit are arranged in the reciprocating direction in the detection unit,
A liquid ejection apparatus, comprising: the irradiation unit, the ejection unit, the irradiation unit, and the detection unit in this order. The liquid ejection apparatus according to any one of claims 1 to 4 , wherein
A liquid ejection apparatus comprising: a position detection unit that detects positions of the ejection unit and the irradiation unit with respect to the medium support unit based on a detection result of the detection unit. The liquid ejection apparatus according to claim 5 , wherein
The liquid ejecting apparatus according to claim 1, wherein the control unit is capable of controlling the irradiation unit based on a detection result of the position by the position detection unit. The liquid ejection apparatus according to claim 6 , wherein
The liquid ejecting apparatus according to claim 1, wherein the control unit can determine consistency between a detection result of the detection unit and a detection result of the position by the position detection unit. A discharge unit for discharging the electromagnetic wave curable liquid;
A medium support for supporting the medium;
An irradiating unit for irradiating electromagnetic waves;
A moving unit for reciprocating the discharge unit and the irradiation unit;
A detection unit capable of detecting the medium or a detection target supported by the medium support unit;
A control unit for controlling the irradiation unit based on a detection result of the detection unit;
Equipped with a,
In the direction of the reciprocating movement, the ejection unit, the irradiation unit, and the detection unit are
The detection unit, the irradiation unit, the detection unit, the ejection unit, the detection unit, the irradiation unit,
A liquid ejection apparatus, wherein the liquid ejection apparatus is provided in the order of the detection units.

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