JP5825469B2 - Recording apparatus and recording method - Google Patents

Description

The present invention relates to a recording apparatus having a recording head that discharges ink from nozzles to a recording medium, a carriage that can move in the width direction of the recording medium, and a guide member that guides the carriage in the width direction. And a recording method in the recording apparatus.
In the present application, the recording apparatus includes types such as an ink jet printer, a copying machine, and a facsimile.

  Conventionally, as shown in Patent Document 1, a printer includes a carriage and a shaft. The carriage has a print head and is movably provided in the width direction of the paper. In addition, the shaft extends in the width direction of the paper and is configured to guide the carriage. Still further, the carriage is provided with a gyro detector for detecting the inclination of the carriage. When the installation direction of the printer changes, the inclination of the print head with respect to the gravity direction changes. The inclination is detected by the gyro detection unit, and the magnitude of energy when ink is ejected from the print head is controlled according to the inclination value of the print head.

JP-A-8-112898

However, the gyro detection unit is configured to detect the inclination of the print head with respect to the direction of gravity when the printer is installed, and is not configured to take into account the linearity of the shaft.
In a large printer, the length of the shaft tends to be long, and it is difficult to guarantee the straightness of the shaft.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a recording apparatus that takes into account distortion of a guide member that guides a carriage, and a recording method in the recording apparatus.

In order to achieve the above object, a recording apparatus according to a first aspect of the present invention includes a carriage that has a recording head that discharges ink from nozzles to a recording medium and is movable in the width direction of the recording medium; a guide member for guiding the carriage in the width direction, and the angular velocity sensor provided on the carriage, during movement in the guide member with the information of change in the attitude of the angular velocity sensor when the angular velocity sensor is moved together with the carriage An information processing unit that processes information related to the position of the angular velocity sensor, and a control unit that controls the operation of the carriage and adjusts the ejection timing of ink from the recording head. The control unit moves the carriage in a range facing the recording medium before starting recording, so that the angular velocity sensor and the information The processing section measures the straightness of the guide member, and adjusting the ejection timing of the ink based on the straightness of the measured said guide member.

According to this aspect, even if the guide member is distorted as a result of measuring the linearity of the guide member, the recording medium is adjusted by adjusting the ejection timing as compared with the configuration in which the guide member is not adjusted. The deviation of the landing position of the ink can be reduced or eliminated. As a result, the recording quality can be improved.
For example, when the recording apparatus is a large printer, the guide member is relatively long and tends to be distorted. Therefore, the ink ejection timing is adjusted based on the measured linearity of the guide member. The configuration is particularly effective.

  According to a second aspect of the present invention, in the first aspect, as a result of measuring the linearity of the guide member, the posture of the carriage changes in a direction around the axis about the feeding direction of the recording medium. When the guide member is distorted, when the direction in which ink is ejected from the nozzle of the recording head is tilted forward in the traveling direction of the carriage with respect to the perpendicular direction of the recording medium, the reference nozzle is The timing is adjusted so that ink is ejected at an earlier timing according to the degree of tilting compared to the timing when it is not tilted, and the direction in which ink is ejected from the nozzles of the recording head is perpendicular to the recording medium. When the carriage is tilted rearward in the direction of travel, the tilt is compared with the timing when the reference nozzle is not tilted. Wherein the response to a configuration to adjust the timing to discharge ink at a later time.

According to this aspect, in addition to the same effect as the first aspect, the so-called pitch in which the posture of the carriage changes in the direction around the axis of the lateral direction (the feeding direction) with respect to the traveling direction as a reference. This is effective when changes.
Even when the pitch changes, the deviation of the ink landing position due to the change of the pitch can be reduced or eliminated.

According to a third aspect of the present invention, in the second aspect, when the position of the nozzle is relatively close to or relatively far from the recording medium in the direction in which the carriage and the recording medium face each other. It is characterized in that the timing is adjusted so that ink is ejected at a later timing than in the above.
According to this aspect, in addition to the same effect as the second aspect, when the guide member is distorted so that the pitch changes, the change between the recording head and the recording medium occurs as the pitch changes. The distance between changes. Even in such a case, it is possible to reduce or eliminate the deviation of the ink landing position due to the change in the distance between the recording head and the recording medium.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the angular velocity sensor includes a base portion and a drive system provided to extend from the base portion to both sides in a predetermined direction. Two T-shaped vibrators, and two resonance arms which are detection systems provided so as to extend on both sides from the base body in a direction crossing the predetermined direction. The character vibrator is configured to be line symmetric with respect to the two resonance arms as an axis of symmetry. This is an angular velocity sensor using a so-called “double T-type vibrator”.

According to this aspect, in addition to the same operational effects as in any one of the first to third aspects, the resonance arm is disposed on the axis of symmetry where the two T-shaped vibrators face each other. The influence of the drive vibration on the resonance arm can be almost eliminated. In other words, “leakage vibration” can be made extremely small.
Here, “leakage vibration” refers to the influence (vibration) that the vibration of the drive system has on the detection system.

Therefore, the angular velocity sensor of this aspect can have a higher sensitivity than a conventional sensor (for example, a tuning fork type vibration gyro sensor). As a result, the linearity of the guide member can be measured with high accuracy.
Further, by using a “double T-type vibrator” having two T-shaped vibrators having a line-symmetric relationship, the size can be reduced as compared with a conventional sensor. As a result, the angular velocity sensor can be sized to be easily attached to the carriage.

According to a fifth aspect of the present invention, in the fourth aspect, the angular velocity sensor is provided with three elements having a structure having the base portion, the two T-shaped vibrators, and the two resonance arms. The directions of the elements having the three structures are non-parallel to each other.
According to this aspect, in addition to the same effect as the fourth aspect, the angular velocity sensor can detect the respective angular velocity information about three axes that are not parallel to each other. As a result, when the traveling direction when the carriage moves is the X-axis direction, information about the roll around the X-axis, the pitch around the Y-axis, and the yaw around the Z-axis can be obtained with a single movement.

The recording method of the sixth aspect of the present invention includes a moving step of moving a carriage provided with an angular velocity sensor in a range facing the recording medium in the width direction of the recording medium while being guided by a guide member; said angular velocity sensor is the relationship between the position of the angular velocity sensor on the move in information and the guide member changes the attitude of the angular velocity sensor when moving together with the carriage, the information processing unit is any information processing association Based on the measurement step of measuring the linearity of the guide member and the measured linearity of the guide member, the ejection timing of the ink from the nozzles of the recording head provided on the carriage to the recording medium is controlled. An adjustment process adjusted by the printing unit, and the nozzle of the recording head at a timing when the control unit moves and adjusts the carriage. Characterized by comprising a recording step of ejecting Luo ink, a.
According to this aspect, even if the guide member is distorted as a result of measuring the linearity of the guide member, the recording medium is adjusted by adjusting the ejection timing as compared with the configuration in which the guide member is not adjusted. The deviation of the landing position of the ink can be reduced or eliminated. That is, the same effect as the first aspect can be obtained.

  According to a seventh aspect of the present invention, in the sixth aspect, as a result of measuring the linearity of the guide member in the measurement step, the attitude of the carriage about the axis about the feeding direction of the recording medium When the guide member is distorted so that the angle of the recording head changes, in the adjustment step, the direction in which ink is ejected from the nozzles of the recording head is tilted forward in the traveling direction of the carriage with respect to the perpendicular direction of the recording medium. The timing of adjusting the timing so that ink is ejected at an earlier timing according to the degree of tilting compared to the timing when not tilting as a reference, and the direction of ejecting ink from the nozzles of the recording head is Compared with the reference timing when the recording medium is not tilted when tilted to the rear side in the direction of travel of the carriage with respect to the perpendicular direction of the recording medium Te, and adjusting the timing to discharge ink at a slower timing in accordance with the order of the inclination.

  According to this aspect, in addition to the same effects as the sixth aspect, in particular, the so-called pitch in which the posture of the carriage changes in the direction around the axis in the lateral direction (the feeding direction) with reference to the traveling direction. This is effective when changes. Even when the pitch changes, the deviation of the ink landing position due to the change of the pitch can be reduced or eliminated. That is, the same effect as the second aspect can be obtained.

According to an eighth aspect of the present invention, in the seventh aspect, the adjustment step is performed when the position of the nozzle is relatively close to the recording medium in a direction in which the carriage and the recording medium are opposed to each other. The timing is adjusted so that ink is ejected at a later timing than when it is relatively far.
According to this aspect, in addition to the same effect as the seventh aspect, when the guide member is distorted so that the pitch changes, the change between the recording head and the recording medium occurs with the change in the pitch. The distance between changes. Even in such a case, it is possible to reduce or eliminate the deviation of the ink landing position due to the change in the distance between the recording head and the recording medium. That is, the same effect as the third aspect can be obtained.

FIG. 2 is a side view illustrating the outline of the printer according to the embodiment. The perspective view which shows the outline of the measurement means which measures the linearity of the guide member of a present Example. FIG. 3 is a side sectional view showing an outline of a relationship between a carriage and a guide member according to the present embodiment. (A) (B) is a figure which shows the inside of the angular velocity sensor apparatus of a present Example. FIG. 4 is a diagram illustrating a recording method for adjusting ink ejection timing based on the linearity of a guide member. (A)-(C) are figures which show the relationship between the measurement result when a pitch changes, and a guide member. FIGS. 4A to 4D are principle diagrams for explaining adjustment (part 1) of ink ejection timing. FIGS. FIGS. 6A to 6D are principle diagrams for explaining ink ejection timing adjustment (part 2). FIGS.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side sectional view showing an outline of the overall configuration of a large-sized inkjet printer 1 (hereinafter simply referred to as a printer) as a recording apparatus of the present embodiment.
As illustrated in FIG. 1, the printer 1 includes a feeding unit 2, a recording unit 13, and a winding device 24. Among these, the feeding means 2 is configured so that the roll medium R wound in a roll shape can be unwound and fed in the feeding direction A. Specifically, it has a first holder portion 8 and a roller pair 12.

Among these, the 1st holder part 8 is provided so that the both ends of the roll medium R can be hold | maintained so that rotation is possible. The first holder portion 8 includes a shaft portion 9 that fits into the core port 31 of the roll core 30 of the roll medium R, and a flange portion 10 that can come into contact with the end portion of the roll medium R. The shaft portion 9 may be configured to be rotatable or may be driven by the power of a motor (not shown). This is because, in the case of a rotatable configuration, the roll medium R is pulled and unwound by the roller pair 12 driven downstream in the feed direction.
Note that a pair of first holder portions 8 are arranged facing each other. Of these, at least one of the first holder portions 8 is configured to slide in the width direction X in accordance with the difference in the width dimension of the roll medium R so as to adjust the mounting position.

  Further, below the first holder portion 8, a temporary placement table 7 as a temporary placement portion and a lifting means 3 are provided. The temporary placement table 7 is a table for temporarily placing the roll medium R before attaching it to the first holder portion 8. As an example, it is constituted by two first shafts 6 extending in the width direction X. The lifting means 3 is configured to easily lift the heavy roll medium R placed on the temporary table 7 upward and to easily attach the side end of the roll medium R to the first holder portion 8. Yes. The Z-axis direction is the vertical direction. Further, it is also a direction in which the roll medium R and a recording head 16 to be described later face each other.

  Specifically, the lifting means 3 includes a base member 32 slidable in the width direction X with respect to the two first shafts 6, an operation lever 4, and an elevating part 5. Then, by rotating the operation lever 4 in one direction, the elevating unit 5 is raised and the roll medium R can be lifted. On the other hand, by rotating the operation lever 4 in the opposite direction, the elevating unit 5 is lowered and the roll medium R can be lowered.

  The recording unit 13 includes a printer main body 11. The printer main body 11 is provided with a guide member 15 as a long body extending in the width direction X, a carriage 14, a recording head 16, and a medium support portion 17. The guide member 15 includes a first guide member 15a as a main guide shaft and a second guide member 15b as a sub guide shaft. The carriage 14 is provided so as to be movable in the width direction X while being guided by the first guide member 15a and the second guide member 15b.

Further, the recording head 16 is provided at a position facing the medium support portion 17 in the carriage 14 and is configured so that ink can be ejected onto the roll medium R and recorded. Furthermore, the medium support unit 17 supports the roll medium R and is provided so that the distance between the roll medium R and the recording head 16 can be a predetermined distance.
Although the roller pair 12 is provided inside the printer main body 11, it may be provided outside. This is because it is sufficient that the roll medium R can be fed in the feeding direction A.
Furthermore, the winding device 24 winds up the roll medium R by the power of a motor (not shown), and winds the roll medium R wound up on the second holder portion 28 attached to the two second shafts 26. It is comprised so that it can hold | maintain.

A tension bar 21 is provided for applying tension to the roll medium R when winding. Accordingly, the roll medium R can be wound up in a roll shape by removing the deflection.
Further, the printer 1 includes left and right ends so as to oppose side-view inverted T-shaped support frames 22 each having a caster 23 for movement at the lower end. The printer main body 11 is provided on the support frame 22.

FIG. 2 shows an outline of the measuring means 33 for measuring the linearity of the guide member 15 of this embodiment.
As shown in FIG. 2, the measuring means 33 for measuring the linearity of the guide member 15 is provided so as to be able to measure the linearity of the first guide member 15a among the guide members 15. Specifically, the measuring unit 33 that measures the linearity of the guide member 15 includes an angular velocity sensor device 34, a cable 40, and an information processing unit 39.

Among these, the angular velocity sensor device 34 is a high-precision sensor, is small, and is provided on the carriage 14. The cable 40 is provided so as to connect the angular velocity sensor device 34 and the information processing unit 39. The angular velocity sensor device 34 is configured to send information acquired by the angular velocity sensor device 34 to the information processing unit 39 via the cable 40.
As a technical idea, it is only necessary that the information acquired by the angular velocity sensor device 34 can be sent to the information processing unit 39. Accordingly, the information may be transmitted from the angular velocity sensor device 34 to the information processing unit 39 wirelessly. That is, the measuring unit 33 that measures the linearity of the guide member 15 may be configured without the cable 40.

Further, the information processing unit 39 is provided so as to be able to process information acquired by the angular velocity sensor device 34. The information processing unit 39 has a display unit 39a.
The information acquired by the angular velocity sensor device 34 when the carriage 14 as the moving body moves in the width direction X while being guided by the first guide member 15a and the second guide member 15b attached to the base frame 51 is information. The processing unit 39 performs processing. At this time, the information processing result is displayed on the display unit 39a.

Next, the relationship between the carriage 14 and the first guide member 15a and the second guide member 15b attached to the base frame 51 will be described.
FIG. 3 is a side sectional view showing an outline of the relationship between the carriage 14 and the guide member 15 of this embodiment.
As shown in FIG. 3, the carriage 14 is configured to be guided by the first guide member 15a as the main guide shaft and the second guide member 15b as the sub guide shaft, as described above.

Specifically, the position of the carriage 14 in the Y-axis and Z-axis directions is determined by the first guide member 15a, and the posture of the carriage 14 around the X-axis is determined by the second guide member 15b. That is, the carriage 14 is configured to lean against the second guide member 15b.
The first guide member 15 a is attached to the base frame 51 via the first L-shaped component 46. The first guide member 15a is supported at a plurality of locations in the X-axis direction.

Similarly, the second guide member 15 b is attached to the base frame 51 via the second L-shaped component 50. The second guide member 15b is supported at a plurality of locations in the X-axis direction.
As will be described in detail later, the control unit 41 can control the operation of the carriage 14 and adjust the timing at which the ink L (see FIGS. 7 and 8) is ejected from the nozzles 16a of the recording head 16. Is provided.
Further, as described above, the carriage 14 is configured to lean against the second guide member 15b. Therefore, in the case of this configuration, there is no problem even if the second guide member 15b is distorted in the radial direction around the first guide member 15a.

Next, the inside of the angular velocity sensor device 34 will be described.
4A and 4B are views showing the inside of the angular velocity sensor device 34 of the present embodiment. Among these, FIG. 4 (A) is an exploded perspective view. On the other hand, FIG. 4B is a plan view showing a double T-type crystal element 38 (double T-type vibrator) of the angular velocity sensor. In the figure, the angular velocity around the Z axis is detected.
As shown in FIG. 4A, the angular velocity sensor device 34 includes a case 35, an angular velocity sensor element 38, a circuit board 37, and a lid 36. Of these, the case 35 and the lid 36 are members for protecting the angular velocity sensor element 38 and the circuit board 37. Further, the element 38 of the angular velocity sensor is attached to the circuit board 37.

As shown in FIG. 4B, the angular velocity sensor element 38 has a so-called double T-type structure. Specifically, the element 38 of the angular velocity sensor has a base portion 38a, two T-shaped vibrators 38b as a drive system, and two resonance arms 38c as a detection system. The two T-shaped vibrators 38b are provided so as to extend to both sides from the base portion 38a in a predetermined direction, for example, in the Y-axis direction. Further, the two resonance arms 38c are provided so as to extend on both sides from the base portion 38a in the X-axis direction intersecting the Y-axis direction.
The element 38 of the angular velocity sensor is configured so that the two T-shaped vibrators 38b are line symmetric with respect to the two resonance arms 38c. This structure is called a double T type structure.

By adopting the double T-type structure, the resonance arm 38c is disposed on the symmetrical axis line where the two T-shaped vibrators 38b face each other, so that the influence of the drive vibration on the resonance arm 38c can be almost eliminated. it can. In other words, “leakage vibration” can be made extremely small.
Here, “leakage vibration” refers to the influence (vibration) that the vibration of the drive system has on the detection system.
Further, the double T-type structure can reduce the size as compared with the conventional sensor. As a result, the angular velocity sensor device 34 can be sized to be easily attached to the carriage 14.

  In FIG. 4B, one double T-type element 38 is shown. However, it is desirable to have three double T-type elements 38. This is because the directions of the three elements 38 having the above-mentioned structures are not parallel to each other (non-parallel to each other), so that angular velocity information about the X axis, the Y axis, and the Z axis can be detected. . If the traveling direction when the carriage 14 moves is the X-axis direction, information about the roll around the X axis, the pitch around the Y axis, and the yaw around the Z axis can be obtained with a single movement. .

Next, a measurement method for measuring the linearity of the first guide member 15a and the second guide member 15b and a recording method for adjusting the ink discharge timing based on the linearity will be described.
FIG. 5 is a diagram showing a measuring method for measuring the linearity of the first guide member 15a and the second guide member 15b of this embodiment and a recording method for adjusting the ink discharge timing based on the linearity. .
As shown in FIG. 5, in step S1, the carriage 14 is moved to a reference position that is one end of a movable range in the X-axis direction.

  In step S2, the carriage 14 is moved from one end side to the other end side of the movable range in the X-axis direction. The movement of the carriage 14 at this time may be manual or automatic. At this time, it is desirable to move the carriage 14 at a substantially constant speed. The correspondence between the information on the change in angular velocity (information on the change in posture) acquired by the angular velocity sensor device 34 and the position of the angular velocity sensor device 34 in the X-axis direction in the first guide member 15a and the second guide member 15b is easily taken. Because it can.

Further, as a technical idea, the carriage 14 may be moved only one way from the one end to the other end, and does not need to be reciprocated. This is because the forward path and the return path are reproducible, and a symmetrical waveform can be obtained if the horizontal axis is time.
In order to further improve the reliability, reciprocal movement may be performed. Needless to say, the average value may be obtained by reciprocating a plurality of times.

  In step S <b> 3, the angular velocity sensor device 34 acquires angular velocity data during movement of the carriage 14. Here, when the angular velocity sensor device 34 has one double T-type element 38, information on any one of the roll around the X axis, the pitch around the Y axis, and the yaw around the Z axis is obtained. Can be obtained. In such a case, the remaining two pieces of information can be obtained by changing the direction of the angular velocity sensor device 34 and moving the carriage 14.

  Further, as described above, when the angular velocity sensor device 34 has three double T-shaped elements 38, information about the roll around the X axis, the pitch around the Y axis, and the yaw around the Z axis is obtained. Can be acquired at once. When the angular velocity sensor device 34 has one double T-type element 38, three angular velocity sensor devices 34 may be provided. This is also because the information about the roll around the X axis, the pitch around the Y axis, and the yaw around the Z axis can be acquired at once.

  In step S <b> 4, the information processing unit 39 performs information processing by associating the relationship between the change in the attitude of the angular velocity sensor device 34 and the position of the angular velocity sensor device 34 that is moving on the guide member 15. At this time, for example, the angular velocity data is integrated once and corrected as necessary. Thereby, the relationship between the angle (posture) of the angular velocity sensor device 34 and the position in the X-axis direction can be obtained, and the degree of linearity of the first guide member 15a and the second guide member 15b can be grasped. . Specifically, it is possible to specify at which position in the X-axis direction the roll around the X-axis, the pitch around the Y-axis, and the yaw around the Z-axis have changed due to the change in the angular velocity during the movement of the carriage 14. it can.

In step S <b> 5, the control unit 41 adjusts the timing of ejecting the ink L (see FIGS. 7 and 8) from the nozzle 16 a based on the distortion of the guide member 15. A detailed description of the adjustment will be described later, and the concept will be briefly described here.
When the guide member 15 is distorted, the posture and position of the carriage 14 with respect to the roll medium R are different from those when the guide member 15 is not distorted.

Here, it is assumed that the ink L (see FIGS. 7 and 8) is ejected from the nozzles 16a of the recording head 16 at the same timing as in the case where there is no distortion. In this case, the landing position of the ink L (see FIGS. 7 and 8) on the roll medium R is deviated from the landing position when the ink is not distorted as a reference.
Therefore, the ink L (see FIGS. 7 and 8) is set so that the landing position of the ink L (see FIGS. 7 and 8) is as close as possible to the landing position when the ink L is not distorted as a reference. Adjust the discharge timing.
In step S5, printing is performed at the adjusted ink discharge timing. Specifically, the control unit 41 performs recording by ejecting ink L from the nozzles 16a of the recording head 16 to the roll medium R while moving the carriage 14 by the power of a motor (not shown). Then, the sequence ends.

Next, the state of the first guide member 15a and the second guide member 15b estimated from the information processing result, and the adjustment of the ink ejection timing in that case will be described.
FIGS. 6A to 6C show, as an example, the relationship between the measurement result when the pitch (angle around the Y axis) changes and the first guide member 15a and the second guide member 15b. It is.
Among these, FIG. 6A shows the result of information processing. The vertical axis indicates the angle in the pitch (around the Y axis) direction. On the other hand, the horizontal axis indicates the position of the angular velocity sensor device 34 in the X-axis direction.
FIG. 6B is a schematic sectional side view.
FIG. 6C is a schematic rear view seen from the upstream side to the downstream side in the arrow direction of the Y axis.

As shown in FIG. 6A, for example, in the result of information processing, the pitch is such that the left side with respect to the approximate center in the X-axis direction has a peak on the negative side and the right side has a peak on the positive side. It is assumed that (the angle around the Y axis) has changed.
Here, in this embodiment, the change of the pitch to the positive side in FIG. 6A is the change in the posture of the carriage 14 in the clockwise direction in FIG. 6C.

In such a case, after the posture of the carriage 14 is tilted counterclockwise in FIG. 6C, the posture is changed clockwise and the original posture is once returned in the direction around the Y axis. After that, after tilting clockwise, the posture is changed counterclockwise, and it can be seen that the original posture has returned in the direction around the Y axis.
Therefore, as shown in FIGS. 6B and 6C, it is estimated that the approximate center of the first guide member 15a in the X-axis direction is distorted so as to protrude toward the downstream side in the arrow direction of the Z-axis. can do.
It should be noted that the degree of distortion is emphasized for easy understanding.

FIGS. 7A to 7D are principle diagrams for explaining the adjustment (part 1) of the ink ejection timing.
7A, the direction N in which the ink L is ejected from the nozzle 16a is inclined to the front side in the traveling direction of the carriage 14 (the arrow direction of the X axis) with respect to the perpendicular direction (Z axis direction) of the roll medium R. This is a case where the ink L is ejected without adjusting the ink ejection timing. In FIG. 7B, the direction N in which the ink L is ejected from the nozzles 16a is inclined to the front side of the carriage 14 in the traveling direction (X-axis arrow direction) with respect to the perpendicular direction (Z-axis direction) of the roll medium R. In this case, the ink discharge timing is adjusted and the ink L is discharged.

Further, FIG. 7C shows that the direction N in which the ink L is ejected from the nozzles 16a is based on the perpendicular direction (Z-axis direction) of the roll medium R, and the rear side in the traveling direction of the carriage 14 (the direction opposite to the arrow on the X-axis). This is a case where the ink L is ejected without adjusting the ink ejection timing. In FIG. 7D, the direction N in which the ink L is ejected from the nozzle 16a is to the rear side in the traveling direction of the carriage 14 (the direction opposite to the arrow on the X axis) with respect to the perpendicular direction (Z axis direction) of the roll medium R. This is a case where the ink is inclined and ink L is ejected by adjusting the ink ejection timing.
7A to 7D, only the posture of the carriage 14 with respect to the roll medium R will be described in order to facilitate understanding of how the timing is adjusted.

  As shown in FIG. 7A, the direction N in which the ink L is ejected from the nozzles 16a is inclined to the front side in the traveling direction of the carriage 14 (the arrow direction of the X axis) with respect to the perpendicular direction (Z axis direction) of the roll medium R. Yes. Here, it is assumed that the ink L is ejected without adjusting the ink ejection timing. In such a case, compared to the case where the direction N in which the ink L is ejected from the nozzle 16a is not inclined with respect to the perpendicular direction (Z-axis direction) of the roll medium R, the position where the ink L lands is from the target position T. The distance d1 is shifted to the front side in the traveling direction (the arrow direction of the X axis).

Therefore, as shown in FIG. 7B, the control unit 41 causes the ink L to be ejected at an earlier timing by the time necessary for the carriage 14 to move forward by the distance d1 in the forward direction (X-axis arrow direction). Adjust timing.
As a result, the ink L can be landed on the target position T in the roll medium R.

  On the other hand, as shown in FIG. 7C, the direction N in which the ink L is ejected from the nozzle 16a is the rear side in the traveling direction of the carriage 14 (reverse to the arrow on the X axis) with respect to the perpendicular direction (Z axis direction) of the roll medium R. Direction). Here, it is assumed that the ink L is ejected without adjusting the ink ejection timing. In such a case, compared to the case where the direction N in which the ink L is ejected from the nozzle 16a is not inclined with respect to the perpendicular direction (Z-axis direction) of the roll medium R, the position where the ink L lands is from the target position T. The distance d2 is shifted to the rear side in the traveling direction (the direction opposite to the arrow on the X axis).

Therefore, as shown in FIG. 7D, the control unit 41 causes the ink L to be ejected at a timing that is delayed by the time necessary for the carriage 14 to move forward by the distance d2 in the forward direction (X-axis arrow direction). Adjust timing.
As a result, the ink L can be landed on the target position T in the roll medium R.
Note that the landing position of the ink L varies depending on the inclination of the direction N in which the ink L is ejected from the nozzle 16a. Needless to say, the degree to which the ink ejection timing is advanced and delayed is adjusted according to the degree of the inclination in the direction N in which the ink L is ejected from the nozzle 16a.

FIGS. 8A to 8D are principle diagrams for explaining the adjustment (part 2) of the ink ejection timing.
8A shows a case where the distance from the nozzle 16a to the roll medium R is longer than the reference predetermined distance D, and the case where the ink L is ejected without adjusting the ink ejection timing. FIG. 8B shows a case where the distance from the nozzle 16a to the roll medium R is longer than the reference predetermined distance D, and the ink L is ejected by adjusting the ink ejection timing.

Further, FIG. 8C shows a case where the distance from the nozzle 16a to the roll medium R is shorter than the reference predetermined distance D, and the case where the ink L is ejected without adjusting the ink ejection timing. FIG. 8D shows the case where the distance from the nozzle 16a to the roll medium R is shorter than the reference predetermined distance D, and the case where the ink L is discharged by adjusting the ink discharge timing.
In FIGS. 8A to 8D, only the distance between the roll medium R and the nozzle 16a will be described for easy understanding of how the timing is adjusted.

  As shown in FIG. 8A, when the distance from the nozzle 16a to the roll medium R is longer than the reference predetermined distance D by the distance d3, the ink L is discharged from the nozzle 16a correspondingly, and the ink L is discharged from the roll medium R. It takes longer time to land on. That is, the timing at which the ink L lands on the roll medium R is delayed as compared with the case where the distance from the nozzle 16a to the roll medium R is the reference predetermined distance D. Here, the carriage 14 ejects the ink L while moving in the traveling direction. Therefore, as compared with the case where the distance from the nozzle 16a to the roll medium R is the reference predetermined distance D, the position where the ink L is landed is the distance d4 from the target position T (the arrow on the X axis). Direction).

Therefore, as shown in FIG. 8B, the control unit 41 causes the ink L to be ejected at an earlier timing by the time necessary for the carriage 14 to move forward by the distance d4 in the forward direction (X-axis arrow direction). Adjust timing.
As a result, the ink L can be landed on the target position T in the roll medium R.

  On the other hand, as shown in FIG. 8C, when the distance from the nozzle 16a to the roll medium R is shorter than the reference predetermined distance D by the distance d5, the ink L is rolled after the ink L is ejected from the nozzle 16a. The time until landing on the medium R is shortened. That is, the timing at which the ink L lands on the roll medium R is earlier than that when the distance from the nozzle 16a to the roll medium R is the reference predetermined distance D. Here, the carriage 14 ejects the ink L while moving in the traveling direction. Accordingly, as compared with the case where the distance from the nozzle 16a to the roll medium R is the reference predetermined distance D, the position where the ink L lands is the rear side in the traveling direction (the X-axis of the X axis from the target position T by the distance d6). The direction is opposite to the arrow.

Therefore, as shown in FIG. 8D, the control unit 41 causes the ink L to be ejected at a timing that is delayed by the time necessary for the carriage 14 to advance forward by the distance d6 in the forward direction (X-axis arrow direction). Adjust timing.
As a result, the ink L can be landed on the target position T in the roll medium R.

Since the landing position of the ink L is shifted depending on the degree of change in the distance between the nozzle 16a and the roll medium R, the ink discharge timing depends on the degree of change in the distance between the nozzle 16a and the roll medium R. It goes without saying that the degree of advancement and delay of adjustment is adjusted.
In order to facilitate understanding, the predetermined distance D has been described as a reference, but the predetermined distance D as a reference may not be provided. An arbitrary distance may be used as a temporary reference, and an average of changes in relative distance may be used as a temporary reference.

As described above, the control unit 41 adjusts the timing at which the ink L is ejected from the nozzles 16a based on the distortion of the guide member 15, so that the landing deviation of the ink L can be reduced or eliminated. As a result, the recording quality can be improved.
For ease of understanding, adjustment of the ink discharge timing (part 1) for dealing with a change in the posture of the carriage 14 and ink discharge timing for dealing with a change in the distance between the nozzle 16a and the roll medium R are described. Although the adjustment (part 2) has been described separately, it goes without saying that the ink discharge timing can be adjusted by combining the two.

In the above embodiment, the carriage 14 is guided by the first guide member 15a and the second guide member 15b as the guide member 15. However, the guide member 15 is a single first guide member 15a. But you can. That is, the structure which does not have the 2nd guide member 15b may be sufficient.
Further, in the above embodiment, the recording is performed on the roll medium R as an example of the recording medium, but the invention is not limited to the roll medium R. A sheet of paper, film, cloth, etc. may be used.

  The printer 1 as a recording apparatus of the present embodiment includes a recording head 16 that ejects ink L from a nozzle 16a to a roll medium R that is an example of a recording medium, and is movable in the width direction X of the roll medium R. Carriage 14, a guide member 15 for guiding the carriage 14 in the width direction X, an angular velocity sensor device 34 which is an angular velocity sensor provided on the carriage 14, and an angular velocity sensor device when the angular velocity sensor device 34 moves together with the carriage 14. The information processing unit 39 for processing information relating to the relationship between the posture change information 34 and the position of the moving angular velocity sensor device 34 on the guide member in association with each other and the operation of the carriage 14 are controlled to And a control unit 41 that can adjust the ejection timing of the ink L. The carriage 14 is moved in a range facing the ink medium R, the linearity of the guide member 15 is measured by the angular velocity sensor device 34 and the information processing unit 39, and the ink L is ejected based on the measured linearity of the guide member 15. It is characterized by adjusting the timing.

  Further, in this embodiment, as a result of measuring the linearity of the guide member 15, the guide member so that the posture of the carriage 14 changes around the Y axis with the feed direction A (Y) of the roll medium R as the Y axis. 15 is distorted, when the direction N in which the ink L is ejected from the nozzles 16a of the recording head 16 is tilted forward in the direction of travel of the carriage 14 with respect to the perpendicular direction (Z-axis direction) of the roll medium R, the reference and The timing N is adjusted so that the ink L is ejected at an earlier timing according to the degree of tilting compared to the timing when the nozzle 16a is not tilted, and the direction N in which the ink L is ejected from the nozzles 16a of the recording head 16 Is inclined to the rear side in the traveling direction of the carriage 14 with respect to the perpendicular direction (Z-axis direction) of the roll medium R, the reference nozzle 16a is inclined. Compared with the timing of the absence, characterized in that it is configured to adjust the timing to discharge ink L at a slower timing in accordance with the order of the inclination.

Furthermore, in this embodiment, when the position of the nozzle 16a is relatively close to the roll medium R in the direction in which the carriage 14 and the roll medium R face each other, the timing is later than when the nozzle 16a is relatively far. A feature is that the timing is adjusted so that the ink L is ejected.
Further, in this embodiment, the angular velocity sensor device 34 includes a base portion 38a, two T-shaped vibrators 38b that are drive systems provided so as to extend on both sides from the base portion 38a in a predetermined direction, and the predetermined speed. Two resonance arms 38c that are detection systems provided so as to extend on both sides from the base portion 38a in a direction crossing the direction, and the two T-shaped vibrators 38b include the two resonance arms 38b. The configuration is symmetrical with respect to the axis of symmetry 38c.
Furthermore, in this embodiment, the angular velocity sensor device 34 is provided with three elements 38 having a structure having a base portion 38a, the two T-shaped vibrators 38b, and the two resonance arms 38c. The directions of the three elements 38 having the above-described structure are non-parallel to each other.

  The recording method of this embodiment includes a moving step of moving the carriage 14 provided with the angular velocity sensor device 34 in the range facing the roll medium R in the width direction X of the roll medium R while being guided by the guide member 15. The information processing unit 39 associates information on the relationship between the change in the attitude of the angular velocity sensor device 34 when the angular velocity sensor device 34 moves with the carriage 14 and the position of the angular velocity sensor device 34 that is moving on the guide member. By performing the processing, the ink L from the nozzle 16a of the recording head 16 provided on the carriage 14 to the roll medium R is measured based on the measurement step of measuring the linearity of the guide member 15 and the measured linearity of the guide member 15. The adjustment process in which the control unit 41 adjusts the discharge timing of the ink and the control unit 41 moves the carriage 14 to adjust the discharge timing. Characterized by comprising to a recording step of ejecting the ink L from the nozzles 16a of the recording head 16 at the timing was, the.

  In this embodiment, as a result of measuring the linearity of the guide member 15 in the measurement step, the attitude of the carriage 14 changes around the Y axis with the feed direction A (Y) of the roll medium R as the Y axis. When the guide member 15 is distorted, the adjustment process proceeds with the carriage 14 with respect to the direction N in which the ink L is ejected from the nozzles 16a of the recording head 16 as a reference (the Z-axis direction). When the ink is tilted forward, the timing is adjusted so that the ink L is ejected at an earlier timing according to the degree of the tilt than the reference timing when the head is not tilted. Reference is made when the direction N in which the ink L is ejected is inclined rearward in the direction of travel of the carriage 14 with respect to the perpendicular direction (Z-axis direction) of the roll medium R. Compared with the timing of when the serial not inclined, and adjusts the timing to discharge ink L at a slower timing in accordance with the order of the inclination.

  Furthermore, in the present embodiment, the adjustment step is compared with the case where the position of the nozzle 16a is relatively close to the roll medium R in the direction in which the carriage 14 and the roll medium R face each other. The timing is adjusted so that the ink L is ejected at a later timing.

  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. Printer, 2. Feeding means, 3. Lifting means, 4. Control lever, 5. Lifting part,
6 First shaft, 7 Temporary table, 8 First holder, 9 Shaft, 10 Flange,
11 Printer body, 12 roller pair, 13 recording unit, 14 carriage,
15 guide member, 15a first guide member, 15b second guide member,
16 recording head, 16a nozzle, 17 medium support, 21 tension bar,
22 support frame, 23 casters, 24 winding device, 26 second shaft,
28 Second holder part, 30 roll core, 31 core port, 32 base member,
33 measuring means, 34 angular velocity sensor device (angular velocity sensor), 35 case,
36 lid, 37 circuit board, 38 element of double T type structure (double T type vibrator),
38a base part, 38b T-shaped vibrator, 38c resonance arm, 39 information processing part,
39a Display unit, 40 cable, 41 control unit, 46 1st L-shaped part,
50 Second L-shaped part, 51 Base frame, A Feed direction,
D reference predetermined distance, d1 to d6 distance, L ink,
N direction of ejecting ink from the nozzle, R roll medium, T target position,
X width direction, Y direction perpendicular to X axis and Z axis,
Z Vertical direction (vertical direction, direction in which the roll medium and recording head face each other)

Claims (8)

A carriage having a recording head for discharging ink from nozzles to the recording medium, and movable in the width direction of the recording medium;
A guide member for guiding the carriage in the width direction;
An angular velocity sensor provided on the carriage;
And an information processing unit for the angular velocity sensor is the relationship between the position of the angular velocity sensor during movement of the guide member with the information of change in the attitude of the angular velocity sensor when moving together with the carriage, to any information processing association,
A controller that controls the operation of the carriage and adjusts the ejection timing of ink from the recording head,
The control unit moves the carriage in a range facing the recording medium before starting recording, and measures the linearity of the guide member by the angular velocity sensor and the information processing unit,
An ink jetting timing is adjusted based on the measured linearity of the guide member. 2. The recording apparatus according to claim 1, wherein the linearity of the guide member is measured, and as a result, the guide member is distorted so that the attitude of the carriage changes in a direction around the axis about the feeding direction of the recording medium. If
When the direction in which ink is ejected from the nozzles of the recording head is tilted forward with respect to the direction of the perpendicular of the recording medium, the timing when the reference nozzle is not tilted is compared with the timing when the reference nozzle is not tilted. Adjust the timing so that ink is ejected at an early timing according to the degree of inclination,
When the direction in which ink is ejected from the nozzles of the recording head is tilted backward with respect to the direction of travel of the recording medium as a reference, the timing when the reference nozzle is not tilted is compared The recording apparatus is configured to adjust the timing so that ink is ejected at a slow timing according to the degree of inclination.   3. The recording apparatus according to claim 2, wherein, in a direction in which the carriage and the recording medium are opposed to each other, the position of the nozzle is relatively close to the recording medium and is slower than that of the recording medium. A recording apparatus that adjusts timing so that ink is ejected at timing. The recording apparatus according to any one of claims 1 to 3, wherein the angular velocity sensor is
A base part;
Two T-shaped vibrators that are drive systems provided so as to extend from the base portion to both sides in a predetermined direction;
Two resonance arms that are detection systems provided so as to extend on both sides from the base portion in a direction intersecting the predetermined direction,
2. The recording apparatus according to claim 1, wherein the two T-shaped vibrators are configured to be line symmetric with respect to the two resonance arms. 5. The recording apparatus according to claim 4, wherein the angular velocity sensor includes three elements having a structure including the base portion, the two T-shaped vibrators, and the two resonance arms,
3. The recording apparatus according to claim 1, wherein directions of the three elements having the structure are non-parallel to each other. A moving step of moving a carriage provided with an angular velocity sensor in a range facing the recording medium in the width direction of the recording medium while being guided by the guide member;
Said angular velocity sensor is the relationship between the position of the angular velocity sensor on the move in information and the guide member changes the attitude of the angular velocity sensor when moving together with the carriage, the information processing unit is any information processing association By the measuring step of measuring the linearity of the guide member,
An adjustment step in which the control unit adjusts the ejection timing of ink from the nozzles of the recording head provided on the carriage to the recording medium based on the measured linearity of the guide member;
A recording step in which the control unit moves the carriage and ejects ink from the nozzles of the recording head at an adjusted timing. 7. The recording method according to claim 6, wherein in the measurement step, the linearity of the guide member is measured, and as a result, the posture of the carriage changes around the axis about the feeding direction of the recording medium. If the guide member is distorted,
The adjusting step includes a timing when the ink is ejected from the nozzles of the recording head when the ink is tilted forward with respect to the direction of travel of the carriage with respect to the perpendicular direction of the recording medium. In comparison, adjust the timing to eject ink at an early timing according to the inclination,
When the direction in which ink is ejected from the nozzles of the recording head is inclined to the rear side in the traveling direction of the carriage with respect to the perpendicular direction of the recording medium, as compared to the reference timing when the inclination is not performed, A recording method characterized in that the timing is adjusted so that ink is ejected at a slow timing in accordance with the degree of inclination. The recording method according to claim 7, wherein the adjustment step includes:
In the direction in which the carriage and the recording medium face each other, when the position of the nozzle is relatively close to the recording medium, the timing is set so that the ink is ejected at a later timing than when the nozzle is relatively far. A recording method characterized by adjusting.

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