JP2021100808A - Recording device and control method of the same - Google Patents

Abstract

To move an ink near a discharge port with a simple structure in a serial type inkjet recording device.SOLUTION: A recording device 100 includes: an ink tank 103 which stores an ink; a supply tube 102 which supplies the ink from the ink tank 103; and a recording head 101 which has a pressure chamber 408 with discharge ports 401 for discharging the ink disposed therein and which scans in a reciprocating manner. The recording head 101 has: a first liquid chamber 402 having a connection part with the supply tube 102; a second liquid chamber 403 communicating with the first liquid chamber 402 through the pressure chamber 408; and a variable volume part 406 which varies a volume of the second liquid chamber 403. A CPU 301 controls at least one of an acceleration and a deceleration of the recording head 101 when reciprocating scan is inverted according to the time needed for recording scan of the recording head 101 which involves discharge of the ink from the discharge port 401.SELECTED DRAWING: Figure 7

Description

The present invention relates to a recording device and a method for controlling the recording device.

There is a so-called serial type inkjet recording device in which a recording operation is performed by repeating movement of a recording head in the main scanning direction and transfer of a recording medium. Patent Document 1 describes an inkjet head having a collection side ink chamber, a supply side ink chamber, and an ink circulation device in a serial type inkjet recording apparatus. In Patent Document 1, the collection side ink chamber, the supply side ink chamber, and the ink circulation device are formed integrally with the inkjet head above the inkjet head. It is described that the ink circulation device includes an ink circulation pump and a pressure sensor, and drives the ink circulation pump to circulate ink between ink chambers through nozzles.

Japanese Unexamined Patent Publication No. 2016-52769

The technique described in Patent Document 1 includes an ink circulation device integrally formed with an inkjet head, and the ink circulation device uses a large number of parts such as an ink circulation pump and a pressure sensor. Therefore, if an attempt is made to circulate the ink in the vicinity of the nozzle by using the technique described in Patent Document 1, there is a risk that the configuration of the recording head becomes complicated and the control of the apparatus becomes complicated.

An object of the present invention is to move ink near a discharge port in an inkjet recording device with a simple configuration.

The recording device according to one aspect of the present invention has a tank for accommodating ink, an ejection port for ejecting ink, and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning. A recording device including a head and a supply flow path for supplying ink from the tank to the recording head, wherein the recording head has a first liquid chamber having a connection portion with the supply flow path and the pressure. The recording head having a second liquid chamber communicating with the first liquid chamber via the chamber and a volume variable portion for changing the volume of the second liquid chamber, and accompanied by ejection of ink from the ejection port. It is characterized by comprising a control means for controlling at least one of the acceleration and the deceleration of the recording head at the time of reversing the reciprocating scanning according to the time required for the recording scanning.

According to the present invention, in an inkjet recording device, ink in the vicinity of a discharge port can be moved with a simple configuration.

It is a schematic perspective view which shows the appearance of a recording apparatus. It is a figure which shows the ink path from an ink tank to a recording head. It is a block diagram which shows the outline of the control structure of a recording device. It is a figure explaining the liquid chamber in a recording head. It is sectional drawing of the recording head. It is a figure explaining the inertial force with the movement of a carriage. It is a figure which shows the change of the discharge rate with respect to the length of the non-discharge time during a recording operation. It is a figure explaining the control of acceleration / deceleration. It is a figure explaining the control of acceleration / deceleration. It is a figure explaining the control of acceleration / deceleration. It is a figure explaining the control of acceleration / deceleration. It is a figure explaining the control of acceleration / deceleration. It is a figure explaining the control of acceleration / deceleration. It is a figure explaining the posture change. It is a figure explaining the example which affects the landing accuracy when the scanning speed is not constant. It is a figure explaining acceleration / deceleration. It is a figure explaining acceleration / deceleration. It is a figure which shows the ink path from an ink tank to a recording head. It is a figure explaining the inertial force with the movement of a carriage.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. It should be noted that the following embodiments do not limit the present invention, and not all combinations of features described in the present embodiments are essential. The same configuration will be described with the same reference numerals.

In this specification, the term "record" is not limited to the case of forming significant information such as characters or figures, and may be significant or unintentional. In addition, regardless of whether or not it is manifested so that it can be visually perceived by humans, there are cases where an image, pattern, pattern, etc. is widely formed on a recording medium, or when the recording medium is processed. It shall be represented.

The term "ink" (sometimes referred to as "liquid") should be broadly construed as in the definition of "recording" above. Therefore, by being applied onto the recording medium, an image, a pattern, a pattern, etc. is formed, the recording medium is processed, or the ink is processed (for example, the colorant in the ink applied to the recording medium is solidified or insolubilized). It shall represent the liquid that can be provided to.

The term "recording medium" refers not only to paper used in general recording devices, but also to a wide range of materials such as cloth, plastic film, metal plate, glass, ceramics, wood, and leather that can accept ink. Shall be.

<< First Embodiment >>
In the present embodiment, the recording operation is performed by repeating the movement of the recording head in the main scanning direction and the transfer of the recording medium in the direction intersecting the main scanning direction (hereinafter referred to as the sub-scanning direction), that is, so-called serial. The type inkjet recording apparatus will be described. Then, in the inkjet recording device (hereinafter, simply referred to as a recording device), a mode of moving the ink in the vicinity of the ejection port will be described.

First, the background of the requirement to move the ink in the vicinity of the ejection port will be schematically described. The recording head of the recording device is configured to eject ink from the ejection port by driving an energy generating element (recording element) arranged in a pressure chamber. As a method of giving energy, an electric heat conversion element (heater), a piezoelectric element, or the like can be used. The ink filled in the pressure chamber is ejected from the ejection port by driving the energy generating element.

If the ink is not ejected from the ejection port during the recording operation for a long time, the evaporation component of the ink evaporates at the meniscus, which is the interface between the ink and the outside air at the ejection port. Therefore, the density and viscosity of the ink in the vicinity of the ejection port become high, and the ejection port is likely to be clogged. In order to suppress such a phenomenon, in general, in a serial type recording device, when the recording head is reciprocated, ink is ejected from the ejection port outside the recording range of the recording medium, and the ink is ejected in the vicinity of the ejection port. A process is performed to eject ink whose characteristics have changed. This process is called a pre-discharge process (or flushing process). The pre-discharge processing is executed once every several round trips, and when higher image quality is required, it is executed once per round trip, and at the maximum, it is executed once for each of the outward route and the return route. Such a preliminary discharge process lowers the recording speed and causes an extra recording time. In addition, ink that is not used for recording images is consumed. Further, a configuration for processing the waste ink discharged by the preliminary ejection is also required.

In this embodiment, an example of moving the ink in the vicinity of the ejection port from the ejection port will be described. As a result, it is possible to suppress the evaporation of the evaporation component of the ink in the vicinity of the ejection port, so that the thickening of the ink in the vicinity of the ejection port can be suppressed without performing the preliminary ejection process. In the present embodiment, the ink in the vicinity of the ejection port is moved by utilizing the characteristics of the serial type recording head. More specifically, an example of moving the ink in the vicinity of the ejection port by utilizing the pressure fluctuation generated in the tube communicating with the recording head during the reciprocating scanning of the recording head will be described. That is, an example of suppressing thickening of the ink near the ejection port with a simple configuration without providing a circulation mechanism such as a pump for moving the ink near the ejection port will be described.

<Appearance of recording device>
FIG. 1 is a schematic perspective view showing the appearance of the recording device 100 in the present embodiment. The recording device 100 has a recording head 101. The recording head 101 has a plurality of ejected ports arranged, and can eject ink of a different color for each row of the ejected ports. The recording head 101 communicates with the ink tank 103 via a supply tube 102 that functions as a supply flow path. The ink tank 103 is fixedly installed at a predetermined position of the recording device 100. Ink of each color is supplied from the ink tank 103 to the discharge port row of each ink color of the recording head 101 via the supply tube 102 for each color. When the ink is ejected from the ejection port, the ink is supplied from the ink tank 103 to the recording head 101.

The recording head 101 is detachably mounted on the carriage 104. The carriage 104 reciprocates along the guide shaft 107 in the main scanning direction of the coordinate axis X during the recording operation. The recording head 101 moves in the main scanning direction integrally with the carriage 104 as the carriage 104 moves. The recording medium 105 is conveyed by the conveying roller 106 in the sub-scanning direction in the coordinate axis Y direction. During standby when the recording operation is not performed, the discharge port of the recording head 101 is capped by the cap 108. The position where the discharge port of the recording head 101 is capped by the cap 108 is the standby position of the recording head 101.

The carriage 104 reciprocates along the X direction together with the recording head 101. Specifically, the carriage 104 is movably supported along a guide shaft 107 arranged along the X direction, and is fixed to an endless belt (not shown) that moves substantially parallel to the guide shaft 107. .. The endless belt reciprocates by the driving force of the carriage motor (CR motor), thereby reciprocating the carriage 104 in the X direction.

<Ink path>
FIG. 2 is a schematic view of the recording device 100 viewed from the + Y direction in FIG. FIG. 2 shows the path of ink for one color from the ink tank 103 arranged at a fixed position of the main body of the apparatus to the recording head 101.

The ink supply system 203 including the ink tank 103 has a hollow tube 204 and a buffer chamber 205, and is held and fixed at a predetermined position of the recording device 100 main body. The supply tube 102 is used as an ink flow path. The supply tube 102 is connected to the ink supply system 203 via an on-off valve 202 that can be opened and closed. The supply tube 102 is made of a flexible material, and can supply ink to the recording head 101 while reciprocating the carriage 104 in the X direction. The supply tube 102 can be connected to the recording head 101 at an arbitrary position of the recording head 101. Further, the supply tube 102 is arranged so as to have a section substantially parallel to the moving direction of the carriage 104. Details will be described later. The arrangement of the supply tubes 102 shown in FIGS. 1 and 2 is an example, and is not limited to this.

Next, a method of supplying ink from the ink tank 103 will be described. The ink tank 103 is detachably mounted on the recording device 100 main body. The ink tank 103 is connected to the supply tube 102 by a hollow tube 204. An on-off valve 202 capable of opening and closing the flow path is provided in the supply tube 102. The on-off valve 202 is configured to open when the power of the recording device 100 is turned on and to close when the power is turned off. That is, the on-off valve 202 is in the open state when the recording operation is being performed. The on-off valve 202 may be closed even after the power is turned on, and the on-off valve 202 may be opened when a recording command is input to the recording device 100. The ink tank 103 is connected by a thin tube 206 so as to communicate with the buffer chamber 205. The connection position between the ink tank 103 and the thin tube 206 is substantially downward in the ink tank 103, similar to the connection position between the ink tank 103 and the hollow tube 204. The buffer chamber 205 is connected by a thin tube 206 similar to the hollow tube 204 so as to communicate with the ink tank 103. While the buffer chamber 205 is connected to the ink tank 103, it is connected to the communication pipe 207 for opening to the atmosphere. As a result, the internal pressure of the ink tank 103 and the atmospheric pressure are balanced. The thin tube 206 that connects the buffer chamber 205 and the ink tank 103 has a structure in which the flow path is sufficiently narrow so as to minimize ink evaporation in the ink tank 103 while communicating the ink tank 103 and the buffer chamber 205. Is made up of.

<Block diagram>
FIG. 3 is a block diagram showing an outline of a control configuration of the recording device 100 of the present embodiment. The CPU 301 reads the program that controls the system control stored in the ROM 302 into the RAM 312 and executes it, and controls the entire system according to the executed program. The RAM 312 is used as a work area for temporarily storing programs and input data required for processing executed by the CPU 301.

Further, the CPU 301 controls the operations of the cleaning unit 304, the transport unit 303, and the like. The transfer unit 303 controls the drive of the transfer roller 106. Further, the CPU 301 controls the recording operation of the recording head 101 through the drive circuit 307, the binarization circuit 308, and the image processing unit 309. The image processing unit 309 performs predetermined image processing on the input color image data to be recorded. The image processing unit 309 executes data conversion for mapping the color gamut reproduced by the input image data of each RGB color component into the color gamut reproduced by the recording device, for example. Based on the converted data, the image processing unit 309 performs processing to obtain CMYK component density data, which is color separation data corresponding to the combination of inks that reproduce the colors indicated by each data, and the color separation data decomposed into each color. Gradation conversion is performed for each of.

The binarization circuit 308 performs halftone processing or the like on the multi-value density image data converted by the image processing unit 309, and then converts it into binary data (bitmap data). The drive circuit 307 executes the ink ejection operation by the recording head 101 according to the binar data obtained by the binarization circuit 308 and the like. The CPU 301 controls the transfer unit 303 to convey the recording medium 105 in response to the recording operation of the recording head 101, and the image is recorded on the recording medium 105.

<Recording head liquid chamber>
FIG. 4 is a diagram illustrating a liquid chamber in the recording head 101. FIG. 4A is a schematic cross-sectional view of the recording head 101 of the present embodiment. Each discharge port 401 is arranged in the depth direction of the paper surface. A heater is arranged as an energy generating element 407 in the pressure chamber 408 inside the recording head 101. Foaming occurs by applying pulsed electric power to the heater, and ink droplets are ejected from the ejection port 401.

The recording head 101 has two liquid chambers, a first liquid chamber 402 and a second liquid chamber 403, which sandwich the discharge port 401. The first liquid chamber 402 is a liquid chamber connected to the supply tube 102. The second liquid chamber 403 is a liquid chamber located on the opposite side of the first liquid chamber 402 with respect to the discharge port 401. The first flow path 404 is a flow path connecting each discharge port 401 and the first liquid chamber 402. The second flow path 405 is a flow path connecting each discharge port 401 and the second liquid chamber 403.

The second liquid chamber 403 includes a volume variable portion 406. The volume variable portion 406 is a member capable of changing the volume in the liquid chamber. In FIG. 4A, the variable volume portion 406 includes a bellows-shaped telescopic member 411 and a liquid chamber wall 410 to which the telescopic member 411 is joined and movable by the telescopic member 411. FIG. 4B is a diagram showing an example in which the configuration of the volume variable portion 406 is different from the example shown in FIG. 4A. In FIG. 4B, the variable volume portion 406 is a rubber-like telescopic member 412.

As shown in FIGS. 4A and 4B, the variable volume portion 406 uses a mechanism that expands and contracts in response to pressure or a flexible member. For example, when pressure is applied in the direction from the first liquid chamber 402 to the second liquid chamber 403, the volume variable portion 406 changes, and the volume of the second liquid chamber 403 is expanded. As a result, the ink that fluctuates due to the reciprocating scanning can be temporarily stored in the second liquid chamber 403 without overflowing from the discharge port 401.

FIG. 5 is a cross-sectional perspective view of the recording head 101 as viewed from the surface on which the discharge port 401 is formed. The discharge ports 401 are arranged in a row. The first flow path 404 and the second flow path 405 are arranged for each discharge port 401. The first liquid chamber 402 and the second liquid chamber 403 extend along the discharge port row. That is, the ink in the first liquid chamber 402 can pass through the first flow path 404, pass through each discharge port 401, and then pass through the second flow path 405 and join in the second liquid chamber 403. The recording head 101 has a plurality of colors of ink, and a plurality of rows of ejection ports 401 are arranged.

<Explanation of inertial force due to movement of carriage>
FIG. 6 is a diagram for explaining the inertial force accompanying the movement of the carriage 104. The recording head 101, which is connected to the ink tank 103 by the supply tube 102, is integrated with the carriage 104 and reciprocates left and right in the X-axis direction of FIG. 1, which is the main scanning direction. That is, in FIG. 6, the carriage 104 reciprocates left and right. The reciprocating movement of the carriage 104 may be performed during the recording operation or may be performed when the recording operation is not performed.

FIG. 6A is a schematic view of the arrangement of the supply tube 102 when the carriage 104 moves to the left end side in the main scanning direction. The left end side is the side in the + X direction in FIGS. 1 and 6 (a), and the left end side in the paper surface of FIG. 6 (a). When the carriage 104 accelerates or decelerates on the left end side in the main scanning direction, an inertial force is generated in the ink in the supply tube 102. Specifically, as shown in FIG. 6A, the ink in the region R1 (the region that moves with the movement of the carriage 104) of the supply tube 102 is inertial in the direction toward the left side of FIG. 6A. Force is generated. The inertial force acting on the region R1 in the supply tube 102 is generated in the direction from the recording head 101 to the ink tank 103 when viewed from the entire flow path. As described above, the on-off valve 202 is in an open state, and the ink tank 103 communicating with the supply tube 102 is open to the atmosphere. Therefore, when an inertial force is generated as shown in FIG. 6A, the ink flows in the direction from the second liquid chamber 403 to the first liquid chamber 402 as shown in FIG. 6B.

FIG. 6C is a schematic view of the arrangement of the supply tube 102 when the carriage 104 moves to the right end side in the main scanning direction. The right end side is the side in the −X direction in FIGS. 1 and 6 (c), and the right end side in the paper surface of FIG. 6 (c). When the carriage 104 accelerates or decelerates on the right end side in the main scanning direction, an inertial force is generated in the ink in the supply tube 102. Specifically, as shown in FIG. 6 (c), the ink in the region R2 (the region that moves with the movement of the carriage 104) of the supply tube 102 is inertial in the direction toward the right side of FIG. 6 (c). Force is generated. The inertial force acting on the region R2 in the supply tube 102 is generated in the direction from the ink tank 103 to the recording head 101 when viewed from the entire flow path. That is, pressure due to inertial force is applied in the direction from the first liquid chamber 402 to the second liquid chamber 403 in the recording head 101. In the present embodiment, as shown in FIG. 6D, the volume variable portion 406 expands the volume of the second liquid chamber 403 and can accommodate the ink that has flowed by pressurization. Therefore, the ink does not leak from the discharge port 401 due to pressurization, but flows in the direction from the first liquid chamber 402 to the second liquid chamber 403.

As described with reference to FIGS. 6 (a) to 6 (d), the carriage 104 performs acceleration / deceleration scanning at the left and right ends, so that the ink reciprocates in the vicinity of the discharge port 401. That is, it is possible to move the ink in the vicinity of the discharge port 401 without using a circulation pump or the like.

In addition, in FIGS. 6A to 6D, an example in which the supply tube 102 is crawled into a substantially J-shape connected so as to lie down the J-shape has been described. Further, an example has been described in which the crawling direction of the supply tube 102 does not change depending on whether the carriage is moved to the left end side or the right end side. Further, FIG. 6 shows an example in which the supply tube 102 is connected to the first liquid chamber 402 so as to wrap around from the left side of the drawing in the vicinity of the connection portion between the first liquid chamber 402 and the supply tube 102. There is. Here, the inertial force acts on the ink in the supply tube 102 (R1 shown in FIG. 6A or R2 shown in FIG. 6C) that moves with the movement of the carriage 104. Therefore, if the crawling direction of the entire supply tube 102 does not change when the carriage is moved, the ink is the same regardless of which direction the supply tube 102 is connected to the first liquid chamber 402 near the connection portion. It will move in the direction.

<Explanation of ink movement>
Next, a phenomenon caused by the movement of ink near the ejection port 401 will be described. As described above, the evaporation component of the ink evaporates at the meniscus, which is the interface between the ink of the discharge port 401 and the outside air. The higher the temperature of the ink, the more the evaporation component of the ink is likely to evaporate. Further, the evaporation component of the ink is more likely to evaporate as the humidity of the air, which is the outside air, is lower. As described above, the characteristics of the ink in the vicinity of the ejection port 401 may change, the ejection accuracy may decrease, or the ejection port 401 may be clogged to cause ejection failure.

In order to recover the ejection port 401 in which the ink having changed characteristics is retained, it is required to replace the ink retained in the ejection port 401 with the ink having unchanged characteristics. Ink with changed characteristics has a high viscosity and density, the ejection speed is slower than that of normal ink ejection, and the landing position on the recording medium deviates from the desired landing position, which causes deterioration of the image quality of the recorded image. Become. Further, the change in the volume of the ejected ink and the increase in the recording density also cause deterioration in the image quality of the recorded image. Therefore, in order to maintain the desired ink ejection, it is required to move the ink whose characteristics have changed due to evaporation at the meniscus in the vicinity of the ejection port 401 from the vicinity of the ejection port 401 (at least the meniscus portion).

In the present embodiment, as described above, the ink near the ejection port 401 moves with the reciprocating movement of the carriage 104, so that the ink thickened near the ejection port 401 is not thickened. It will be mixed with and relaxed.

FIG. 7 shows a change in the discharge rate during the non-discharge time during the recording operation. In FIG. 7, the ejection speeds were actually measured in the case where the flow due to the inertial force was generated near the ejection port 401 at regular intervals (ink moving state) and in the case where no flow was generated (ink stationary state). It is the figure which showed the result. The measurement is performed by using a discharge observation jig capable of applying an arbitrary drive pulse and continuously discharging at a constant frequency while the recording head 101 is fixed. The ejected droplets are photographed with strobes with different emission delays, and the difference in the positions of the droplets is converted into the velocity. If there is no ink flow near the ejection port 401, the ink near the ejection port 401 evaporates when the non-ejection time becomes long, so the ejection speed suddenly slows down, and finally evaporation progresses to thicken and non-ejection. It becomes a state (see the dotted line in FIG. 7). On the other hand, in the recording device 100, when the ink reciprocates in the vicinity of the ejection port 401 due to the reciprocating scanning of the carriage 104, the progress of evaporation of the ink accumulated in the vicinity of the ejection port 401 is suppressed. Therefore, it is possible to maintain a normal discharge state without a decrease in the discharge speed (see the solid line in FIG. 7).

As described above, in the present embodiment, when the carriage 104 performs acceleration / deceleration scanning at the left and right ends, the ink flows in the vicinity of the ejection port 401, so that the change in the characteristics of the ink can be suppressed. By utilizing the reciprocating movement of the carriage 104, which is a characteristic of the serial type, it is possible to move the ink in the vicinity of the discharge port 401 without using a circulation pump or the like. Further, since the change in the characteristics of the ink can be suppressed by moving the ink in the vicinity of the ejection port 401, it is not necessary to perform the preliminary ejection operation performed during the scanning of the carriage 104 as described above. Therefore, since the continuous recording operation can be performed without performing the preliminary discharge process, the entire recording time can be shortened. In addition, the ink consumption associated with the preliminary ejection process can be reduced. Further, according to the recording device 100 of the present embodiment, it is possible to use high-viscosity ink or the like, which was difficult to eject normally even after the preliminary ejection process, and the degree of freedom of the ink is improved. The device 100 can be provided.

The recording device 100 described in this embodiment can be applied to any serial recording device. In the case of a recording device that records a large-sized recorded object such as large-format printing, the time required for reciprocating movement is long, so that the characteristics of the ink near the ejection port 401 that is not used for ejection are likely to change. By using the configuration described in this embodiment, it is possible to significantly reduce the recording time particularly when performing a continuous recording operation in a large-sized recording device. Although it has been explained that the recording device 100 of the present embodiment can perform the continuous recording operation without performing the preliminary ejection process, performing the preliminary ejection process itself in the recording device 100 of the present embodiment itself. Of course it is possible.

<Control of acceleration / deceleration>
Next, in the reciprocating movement of the carriage 104, an example of controlling the acceleration and deceleration of the carriage 104 according to the time required for recording scanning will be described. The recording scan is a scan of the carriage 104 in a region where ink is ejected from the ejection port 401. The time required for recording scanning is determined by, for example, the recording scanning width, which is the width at which recording scanning is performed in the scanning direction. Therefore, in the present embodiment, the acceleration and deceleration of the carriage 104 at the time of reversing the reciprocating scanning of the carriage 104 are controlled according to the recording scanning width. As described above, from the viewpoint of moving the ink near the ejection port 401, the larger the acceleration and deceleration of the carriage 104 at the end (inversion) in the scanning direction, the larger the inertial force generated. preferable. On the other hand, if the acceleration and deceleration of the carriage 104 are large, the electric power for driving the carriage 104 and the temperature rise of the drive motor are large, which is not preferable.

Therefore, in the present embodiment, the larger the recording scanning width is, the larger the acceleration and deceleration are controlled, and the smaller the recording scanning width is, the smaller the acceleration and deceleration are controlled. For example, the recording scan width is assumed to be a first width and a second width larger than the first width. At this time, the acceleration and deceleration in the case of the first width are controlled to be equal to or less than the acceleration and deceleration in the case of the second width.

FIG. 8 is a diagram illustrating control of acceleration / deceleration of the present embodiment. In FIG. 8A, the vertical axis shows the scanning speed (moving speed) of the carriage (CR), and the horizontal axis shows the scanning position of the carriage. As shown in FIG. 8A, the speed of the carriage 104 is constant at the position corresponding to the recording scan width. FIG. 8B is a diagram showing the acceleration / deceleration of the carriage 104 with respect to the recording scanning width. In FIG. 8, the recording scanning width is classified into three categories, and the acceleration / deceleration of the carriage 104 corresponding to each category is set. The recording device 100 controls the carriage 104 at an acceleration / deceleration corresponding to the recording scanning width.

Specifically, in the example of FIG. 8, the acceleration and deceleration when the recording scanning width is less than 20 inches are set to ^{9 m / sec 2.} The acceleration and deceleration when the recording scanning width is 20 inches or more and less than 40 inches are set to ^{12 m / sec 2.} The acceleration and deceleration when the recording scanning width is 40 inches or more are set to ^{15 m / sec 2.}

The larger the recording scan width, the larger the evaporation in the vicinity of the ejection port 401 during the recording scan, and the larger the increase in the viscosity of the ink. Therefore, the inertial force required for the flow of ink near the ejection port 401 increases. Therefore, the larger the recording scanning width, the larger the acceleration / deceleration is controlled. On the other hand, the smaller the recording scan width, the smaller the evaporation near the ejection port 401 during the recording scan, and the smaller the increase in the viscosity of the ink. Therefore, the inertial force required for the ink flow near the ejection port 401 becomes small. Therefore, the smaller the recording scanning width, the smaller the acceleration / deceleration.

As described above, in the present embodiment, the acceleration / deceleration of the carriage 104 is controlled according to the recording scanning width. As a result, the ink in the vicinity of the ejection port can be moved while suppressing the electric power for driving the carriage 104 and the temperature rise due to the driving. Therefore, it is possible to reduce the pre-discharged ink during the recording scan and reduce the image deterioration due to the evaporation of the ink in the vicinity of the discharge port.

In the present embodiment, an example of controlling the acceleration / deceleration according to the recording scanning width has been described, but the control may be performed according to the width of the recording medium or the recorded image size. The width of the recording medium and the size of the recorded image are also parameters corresponding to the time required for the recording scan, and the larger the width of the recording medium and the size of the recorded image, the longer the time required for the recording scan.

<< Second Embodiment >>
In the first embodiment, an example of controlling the acceleration / deceleration mainly according to the recording scanning width has been described. In this embodiment, an example of controlling the acceleration / deceleration of the carriage 104 according to the scanning speed of the carriage 104 will be described. This embodiment can be applied, for example, when a plurality of carriage scanning speeds different depending on the print mode are set. Since the configuration of the recording device 100 and the like are the same as those of the first embodiment, the description thereof will be omitted.

FIG. 9 is a diagram illustrating control of acceleration / deceleration of the present embodiment. The time required for recording scanning varies depending on the carriage scanning speed. In the present embodiment, the slower the carriage scanning speed is, the larger the acceleration and deceleration are controlled, and the faster the carriage scanning speed is, the smaller the acceleration and deceleration are controlled. For example, the carriage scanning speed is assumed to be a first speed and a second speed slower than the first speed. At this time, the acceleration and deceleration in the case of the first speed are controlled to be equal to or less than the acceleration and deceleration in the case of the second speed.

Specifically, in the present embodiment, two types of carriage scanning speeds of 30 inch / sec and 60 inch / sec are provided depending on the recording mode. The acceleration and deceleration when the carriage scanning speed is 30 inches / sec are set to ^{15 m / sec 2.} The acceleration and deceleration when the carriage scanning speed is 60 inches / sec are set to ^{9 m / sec 2.}

The slower the carriage scanning speed, the greater the evaporation near the ejection port 401 during recording scanning, and the greater the increase in ink viscosity. Therefore, the inertial force required for the flow of ink near the ejection port 401 increases. Therefore, the slower the carriage scanning speed is, the larger the acceleration / deceleration is controlled. On the other hand, the faster the carriage scanning speed, the smaller the evaporation near the ejection port 401 during recording scanning, and the smaller the increase in ink viscosity. Therefore, the inertial force required for the ink flow near the ejection port 401 becomes small. Therefore, the faster the carriage scanning speed is, the smaller the acceleration / deceleration is controlled.

As described above, in the present embodiment, the acceleration / deceleration of the carriage 104 is controlled according to the scanning speed of the carriage 104. As a result, the ink in the vicinity of the ejection port can be moved while suppressing the electric power for driving the carriage 104 and the temperature rise due to the driving. Therefore, it is possible to reduce the pre-discharged ink during the recording scan and reduce the image deterioration due to the evaporation of the ink in the vicinity of the discharge port.

<< Third Embodiment >>
The third embodiment is an example in which the first embodiment and the second embodiment are combined. That is, in the present embodiment, the time required for the recording scan is determined by referring to both the recording scanning width and the carriage scanning speed.

FIG. 10 is a diagram illustrating acceleration / deceleration of the present embodiment. In the present embodiment, when the recording scanning width is less than a predetermined width, the same acceleration / deceleration speed is set regardless of the carriage scanning speed. On the other hand, when the recording scanning width exceeds a predetermined width, the acceleration / deceleration is set according to the carriage scanning speed. Specifically, the acceleration and deceleration when the recording scanning width is less than 20 inches are set to ^{9 m / sec 2.} The acceleration and deceleration when the recording scanning width is 20 inches or more and less than 40 inches and the carriage scanning speed is 30 inches / sec are set to ^{12 m / sec 2.} The acceleration and deceleration when the recording scanning width is 20 inches or more and less than 40 inches and the carriage scanning speed is 60 inches / sec are set to ^{9 m / sec 2.} The acceleration and deceleration when the recording scanning width is 40 inches or more and the carriage scanning speed is 30 inches / sec are set to ^{15 m / sec 2.} Further, the acceleration and deceleration when the recording scanning width is 40 inches or more and the carriage scanning speed is 30 inches / sec are set to ^{12 m / sec 2.}

The larger the recording scan width or the slower the carriage scanning speed, the greater the evaporation near the ejection port 401 during the recording scan, and the greater the increase in ink viscosity. Therefore, the inertial force required for the flow of ink near the ejection port 401 increases. Therefore, the larger the recording scanning width or the slower the carriage scanning speed, the larger the acceleration / deceleration speed is controlled. On the other hand, the smaller the recording scanning width or the faster the carriage scanning speed, the smaller the evaporation in the vicinity of the ejection port 401 during recording scanning, and the smaller the increase in ink viscosity. Therefore, the inertial force required for the ink flow near the ejection port 401 becomes small. Therefore, the smaller the recording scanning width or the faster the carriage scanning speed, the smaller the acceleration / deceleration speed is controlled.

As described above, in the present embodiment, the acceleration / deceleration of the carriage 104 is controlled according to the recording scanning width and the scanning speed. As a result, the ink in the vicinity of the ejection port can be moved while suppressing the electric power for driving the carriage 104 and the temperature rise due to the driving. Therefore, it is possible to reduce the pre-discharged ink during the recording scan and reduce the image deterioration due to the evaporation of the ink in the vicinity of the discharge port.

The acceleration / deceleration may be set according to the recording scanning time obtained from the recording scanning width and the carriage scanning speed. Then, control may be performed so that the acceleration / deceleration corresponds to the recording scanning time. That is, in the setting information shown in FIG. 10, acceleration / deceleration may be set according to the recording scanning time.

<< Fourth Embodiment >>
This embodiment is an example of controlling the acceleration / deceleration of the carriage according to the humidity in the vicinity of the recording device obtained by a humidity sensor (not shown). The humidity in the vicinity of the recording device is, for example, the humidity of the place where the recording device is installed. The lower the humidity, the larger the evaporation near the discharge port 401 during recording scanning, and the higher the humidity, the smaller the evaporation near the discharge port 401 during recording scanning. In consideration of this point, in the present embodiment, the acceleration / deceleration of the carriage 104 is controlled according to the humidity.

FIG. 11 is a diagram illustrating acceleration / deceleration of the present embodiment. In the present embodiment, the higher the humidity, the lower the acceleration / deceleration of the carriage 104, and the lower the humidity, the higher the acceleration / deceleration of the carriage 104. Specifically, the acceleration and deceleration when the humidity near the recording device 100 is less than 30% is set to ^{15 m / sec 2.} The acceleration and deceleration when the humidity is 30% or more and the humidity is less than 60% are set to ^{12 m / sec 2.} The acceleration and deceleration when the humidity is 60% or more are set to ^{9 m / sec 2.}

The lower the humidity in the vicinity of the device, the greater the evaporation in the vicinity of the ejection port 401 during recording scanning, and the greater the increase in ink viscosity. Therefore, the inertial force required for the flow of ink near the ejection port 401 increases. Therefore, the lower the humidity in the vicinity of the device, the greater the acceleration / deceleration of the carriage 104. On the other hand, the higher the humidity in the vicinity of the device, the smaller the evaporation in the vicinity of the ejection port 401 during the recording scan, and the smaller the increase in the viscosity of the ink. Therefore, the inertial force required for the ink flow near the ejection port 401 becomes small. Therefore, the higher the humidity in the vicinity of the device, the smaller the acceleration / deceleration of the carriage 104.

As described above, in the present embodiment, the acceleration / deceleration of the carriage 104 is controlled according to the humidity in the vicinity of the recording device. As a result, the ink in the vicinity of the ejection port can be moved while suppressing the electric power for driving the carriage 104 and the temperature rise due to the driving. Therefore, it is possible to reduce the amount of ink ejected by the preliminary ejection during the recording scan, and to reduce the image deterioration due to the evaporation of the ink in the vicinity of the ejection port.

It should be noted that the control may be performed not only by humidity but also by temperature. As described above, the higher the temperature, the more the ink evaporates. Therefore, the higher the temperature, the higher the acceleration / deceleration of the carriage 104 may be. Further, the present embodiment may be combined with the examples described in the first to third embodiments.

<< Fifth Embodiment >>
In this embodiment, an example of controlling the acceleration / deceleration of the carriage according to the number of discharges during recording scanning will be described. By ejecting ink in the vicinity of the ejection port 401, the ink in the vicinity of the ejection port 401 is replaced with fresh ink that is not thickened. On the other hand, the ink near the ejection port 401, which is not used for ejection, may evaporate as described above. As the number of discharges during recording scanning decreases, the number of discharge ports 401 that are not used for discharge increases. As a result, the increase in ink viscosity increases. Therefore, in the present embodiment, the acceleration / deceleration of the carriage is controlled according to the number of discharges during the recording scan.

FIG. 12 is a diagram illustrating acceleration / deceleration of the present embodiment. In the present embodiment, the smaller the number of discharges during the recording scan, the larger the acceleration / deceleration, and the larger the number of discharges during the recording scan, the smaller the acceleration / deceleration. Specifically, the acceleration and deceleration when the number of discharges during recording scanning is less than 1 × 10E4dot is set to ^{15 m / sec 2.} The acceleration and deceleration when 1 × 10E4dot or more and less than 1 × 10E6dot are set to ^{12 m / sec 2.} The acceleration and deceleration when 1 × 10E6 dots or more are set to ^{9 m / sec 2.} The number of discharges during the recording scan is obtained based on the recorded data used for recording the image. Further, in the present embodiment, the acceleration / deceleration is controlled according to the number of discharges for each recording scan, but the present invention is not limited to this. For example, the acceleration / deceleration in the plurality of recording scans may be controlled according to the number of discharges in which a plurality of recording scans are collectively united. Further, the acceleration / deceleration in each recording scan of the recorded image may be controlled according to the total number of ejected images of the recorded image. The acceleration / deceleration in one recording scan can be, for example, an acceleration / deceleration composed of an acceleration on one end side and a deceleration on the other end side in the scanning region of the carriage 104. Alternatively, it can be an acceleration / deceleration composed of a deceleration on one end side and an acceleration on the other end side.

The smaller the number of ejects during the recording scan, the greater the evaporation near the ejection port 401 during the recording scan, and the greater the increase in the viscosity of the ink. Therefore, the smaller the number of ejections during the recording scan, the greater the inertial force required for the ink flow near the ejection port 401. Therefore, the smaller the number of discharges during the recording scan, the larger the acceleration / deceleration speed is controlled. On the other hand, the larger the number of ejects during the recording scan, the smaller the evaporation near the ejection port 401 during the recording scan, and the smaller the increase in the viscosity of the ink. Therefore, the larger the number of ejections during the recording scan, the smaller the inertial force required for the ink flow near the ejection port 401. Therefore, the acceleration / deceleration is controlled to decrease as the number of discharges during the recording scan increases.

As described above, in the present embodiment, the acceleration / deceleration of the carriage 104 is controlled according to the number of discharges during the recording scan. As a result, the ink in the vicinity of the ejection port can be moved while suppressing the electric power for driving the carriage 104 and the temperature rise due to the driving. Therefore, it is possible to reduce the pre-discharged ink during the recording scan and reduce the image deterioration due to the evaporation of the ink in the vicinity of the discharge port.

When the recording head has a plurality of colors, the control may be performed according to the smallest number of discharges of each color in order to surely obtain the effect. Further, it may be combined with the examples described in the first to fourth embodiments.

<< 6th Embodiment >>
In the previous embodiments, an example in which the acceleration and deceleration of the carriage 104 are set to the same value has been described. In this embodiment, an example in which the acceleration and the deceleration of the carriage 104 are set as different speeds will be described. More specifically, in the present embodiment, the acceleration of the carriage 104 is controlled to be smaller than the deceleration.

FIG. 13 is a diagram illustrating acceleration / deceleration of the present embodiment. In FIG. 13, the vertical axis shows the scanning speed of the carriage (CR), and the horizontal axis shows the scanning position of the carriage. FIG. 13 shows the acceleration and deceleration when the carriage 104 is located on the right end side. As shown in FIG. 13, in the present embodiment, the acceleration ^{is set to 9 m / sec 2} and the deceleration is set to 15 m / sec ² .

Basically, the larger the acceleration and the deceleration, the more advantageous for the ink flow near the ejection port 401. However, when the acceleration is equal to or higher than a predetermined value, the ink landing accuracy may be affected by the posture change of the carriage 104 or the vibration of the guide shaft 201 during the subsequent recording operation. Therefore, in the present embodiment, the acceleration of the carriage 104 is set to be smaller than the deceleration.

FIG. 14 is a diagram illustrating a change in posture of the carriage. As shown in FIG. 14A, it is ideal that the carriage 104 scans while being supported in parallel with the guide shaft 201. On the other hand, immediately after acceleration, as shown in FIGS. 14 (b) and 14 (c), the carriage 104 scans while slightly changing its posture. As a result, the landing accuracy of the ink may be affected. Further, with the acceleration operation of the carriage 104, a minute impact of landing may occur due to the recording head 101 receiving the vibration of the guide shaft 201 itself.

On the other hand, when the carriage 104 is decelerated, such an effect is unlikely to occur. This is because even if the deceleration of the carriage 104 is large, the attitude change and the vibration of the carriage support member are converged when the scanning direction is reversed and the recording operation is performed thereafter, and there is almost no influence thereof.

As described above, in the present embodiment, the acceleration of the carriage 104 is set to be smaller than the deceleration. As a result, the ink in the vicinity of the ejection port can be moved while suppressing the influence on the landing accuracy due to the acceleration of the carriage. Therefore, it is possible to reduce the pre-discharged ink during the recording scan and reduce the image deterioration due to the evaporation of the ink in the vicinity of the discharge port.

<< 7th Embodiment >>
This embodiment is an example in which the acceleration of the carriage 104 is set to be smaller than the deceleration, as in the sixth embodiment. In the case of the example of FIG. 13 used for explanation in the sixth embodiment, the carriage 104 is also accelerated in the recording area. This is due to the difference between acceleration and deceleration. That is, the position where the deceleration of the carriage 104 is completed becomes the inverted position of the carriage 104, and when the carriage 104 is inverted and accelerated from this position, the acceleration is smaller than the deceleration, so that the carriage 104 is also in the recording area. Is accelerated.

FIG. 15 is a diagram illustrating an example in which the landing accuracy is affected when the recording operation (discharge operation) is performed when the scanning speed of the carriage 104 is not constant. As shown in FIG. 15A, when the acceleration of the carriage 104 is completed and the carriage 104 is scanned at a constant speed, the landing positions at each discharge timing are fixed intervals. On the other hand, as shown in FIG. 15B, when the carriage 104 is accelerating, the landing position at each discharge timing is deviated.

FIG. 16 is a diagram illustrating acceleration / deceleration of the present embodiment. FIG. 16 shows an example of controlling the acceleration start position so that recording is not performed during acceleration, that is, recording is started after acceleration is completed. Specifically, the carriage 104 is further moved from the position where the deceleration operation at the time of deceleration ends to the acceleration start position. After that, acceleration is performed from the acceleration start position, and recording is started.

As described above, in the present embodiment, the acceleration start position is controlled so that the recording starts after the acceleration is completed. That is, the acceleration start position of the carriage 104 is controlled so that the scanning speed of the carriage 104 that is recording is within a predetermined range. As a result, it is possible to suppress the recording operation from being performed while accelerating, and it is possible to reduce the influence on the image due to the landing position deviation.

<< Eighth Embodiment >>
This embodiment is an example in which the acceleration of the carriage 104 is set to be smaller than the deceleration, as in the sixth embodiment. In the example described in the seventh embodiment, acceleration and deceleration are performed again after the deceleration ends after the recording scan in order to set the acceleration start position so that the recording starts after the acceleration ends. In this case, the recording operation becomes slow. Therefore, in the present embodiment, the carriage deceleration start position is controlled so that the carriage deceleration end position after the recording scan becomes the carriage acceleration start position.

FIG. 17 is a diagram illustrating acceleration / deceleration of the present embodiment. As shown in FIG. 17, in the present embodiment, the carriage deceleration start position is controlled so that the carriage deceleration end position after the recording scan becomes the carriage acceleration start position. That is, the deceleration start position of the carriage 104 is controlled so that the position where the carriage 104 decelerates and stops at the end portion in the scanning direction becomes the acceleration start position of the carriage 104 at the end portion. That is, the deceleration start timing of the carriage 104 is delayed. Thereby, after the deceleration is completed after the recording scan, the acceleration start position can be controlled without accelerating and decelerating again.

As described above, according to the present embodiment, it is possible to suppress the recording operation while accelerating while reducing the operation time of the carriage.

<< 9th Embodiment >>
In this embodiment, an example in which the configuration of the recording head 101 and the ink tank 103 is different from that of the above-described embodiment will be described. Specifically, an example will be described in which a plurality of tubes are connected to the ink tank 103 as supply tubes 102, and each tube is connected to the recording head 101. The example of this embodiment is an example in which the volume variable portion 406 does not have to be provided. This embodiment can be combined with any of the first to eighth embodiments.

FIG. 18 is a diagram showing an ink path from the ink tank to the recording head in this embodiment. FIG. 18 shows the ink path from the ink tank 103 arranged at a fixed position of the main body of the apparatus to the recording head 101.

The supply tube 102 of the present embodiment includes a first tube 102a and a second tube 102b that form a flow path. That is, in this example, the supply tube 102 is a general term for the first tube 102a and the second tube 102b. The on-off valve 202 is arranged in the first tube 102a and the second tube 102b, respectively.

In the example of FIG. 18, an example of an ink path including an ink tank 103 of one color ink is shown. The ink tank 103 is a tank that also supplies and collects ink. A hollow tube 204 connected to the first tube 102a and the second tube 102b is arranged from the ink tank 103, respectively. It is preferable that the ink tank 103 is arranged substantially at the center in the X direction of the recording area (passing area of the recording medium 105) where recording is performed by the recording head 101. As a result, the first tube 102a and the second tube 102b have a symmetrical crawling configuration. This is to ensure that the pressure is uniformly obtained in the tube in the outward scanning and the inbound scanning of the recording head 101 in order to move the ink whose characteristics have changed on the meniscus surface of the ejection port 401. The first tube 102a can be connected to the first liquid chamber 402 in the recording head 101. The second tube 102b can be connected to the second liquid chamber 403 in the recording head 101. Further, the first tube 102a and the second tube 102b are arranged so as to have a section substantially parallel to the moving direction of the carriage 104.

FIG. 19 is a diagram illustrating an inertial force associated with the movement of the carriage 104. The recording head 101, which is connected to the ink tank 103 via the supply tube 102 (first tube 102a, second tube 102b), is integrated with the carriage 104 and reciprocates left and right in the X-axis direction of FIG. 1, which is the main scanning direction. Moving. That is, in FIG. 19, the carriage 104 reciprocates left and right. The reciprocating movement of the carriage 104 may be performed during the recording operation or may be performed when the recording operation is not performed.

FIG. 19A is a schematic view of the arrangement of the first tube 102a and the second tube 102b when the carriage 104 moves to the left end side in the main scanning direction. The left end side is the side in the + X direction in FIG. 19 (a) and the left end side in the paper surface of FIG. 19 (a). When the carriage 104 accelerates and decelerates on the left end side in the main scanning direction, an inertial force is generated in the inks of the first tube 102a and the second tube 102b. More specifically, an inertial force is generated in the direction from the first tube 102a to the recording head 101 and from the recording head 101 to the second tube 102b. That is, an inertial force is generated in the direction toward the left side in FIG. 19A. This inertial force is generated in the direction from the recording head 101 to the ink tank 103 via the second tube 102b when viewed from the entire flow path. As described above, the on-off valve 202 is in an open state, and the ink tank 103 communicating with the first tube 102a and the second tube 102b is open to the atmosphere. Therefore, when an inertial force is generated as shown in FIG. 19A, the ink is charged from the first tube 102a to the first liquid chamber 402, the pressure chamber 408, and the second liquid chamber as shown in FIG. 19B. It flows with 403. Then, it flows from the second liquid chamber 403 to the ink tank 103 via the second tube 102b.

FIG. 19C is a schematic view of the arrangement of the first tube 102a and the second tube 102b when the carriage 104 is moved to the right end side in the main scanning direction. The right end side is the side in the −X direction in FIG. 19 (c) and the right end side in the paper surface of FIG. 19 (c). When the carriage 104 accelerates or decelerates on the right end side in the main scanning direction, an inertial force is generated in the ink in the first tube 102a and the second tube 102b. More specifically, an inertial force is generated from the second tube 102b toward the recording head 101 and from the recording head 101 toward the first tube 102a. That is, an inertial force is generated in the direction toward the right side in FIG. 19 (c). This inertial force is generated in the direction from the recording head 101 to the ink tank 103 via the first tube 102a when viewed from the entire flow path. As described above, the on-off valve 202 is in an open state, and the ink tank 103 communicating with the first tube 102a and the second tube 102b is open to the atmosphere. Therefore, when an inertial force is generated as shown in FIG. 19 (c), the ink is charged from the second tube 102b to the second liquid chamber 403, the pressure chamber 408, and the first liquid chamber as shown in FIG. 19 (d). It flows with 402. Then, it flows from the first liquid chamber 402 to the ink tank 103 via the first tube 102a.

As described with reference to FIGS. 19 (a) to 19 (d), the carriage 104 performs acceleration / deceleration scanning at the left and right ends, so that the ink reciprocates in the vicinity of the discharge port 401. That is, it is possible to move the ink in the vicinity of the discharge port 401 without using a circulation pump or the like.

<< Other Embodiments >>
In the sixth to eighth embodiments, an example in which the acceleration of the carriage 104 is controlled to be slower than the deceleration has been described. These may be combined with the 1st to 5th embodiments.

The present invention supplies a program that realizes one or more functions of the above-described embodiment to a system or device via a network or storage medium, and one or more processors in the computer of the system or device reads and executes the program. It can also be realized by the processing to be performed. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

101: Recording head 102: Supply tube 103: Ink tank 104: Carriage 401: Discharge port 402: First liquid chamber 403: Second liquid chamber 406: Variable volume

Claims (22)

A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A supply flow path for supplying ink from the tank to the recording head, and
It is a recording device equipped with
The recording head
A first liquid chamber having a connection with the supply flow path and
A second liquid chamber communicating with the first liquid chamber via the pressure chamber,
A volume variable portion that changes the volume of the second liquid chamber,
Have,
A control means for controlling at least one of acceleration and deceleration of the recording head at the time of reversal of the reciprocating scanning is provided according to the time required for recording scanning of the recording head accompanied by ejection of ink from the ejection port. A featured recording device. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A first flow path capable of supplying ink from the tank to the recording head,
A second flow path different from the first flow path, which can supply ink from the tank to the recording head, and
It is a recording device equipped with
The recording head
A first liquid chamber having a connection portion with the first flow path and
A second liquid chamber that communicates with the first liquid chamber via the pressure chamber and has a connection portion with the second flow path.
Have,
A control means for controlling at least one of acceleration and deceleration of the recording head at the time of reversal of the reciprocating scanning is provided according to the time required for recording scanning of the recording head accompanied by ejection of ink from the ejection port. A featured recording device. When the time required for the recording scan is the first value, the control means performs at least one of the acceleration and the deceleration as compared with the case where the time required for the recording scan is longer than the first value. The recording device according to claim 1 or 2, wherein the recording device is made smaller. The recording apparatus according to any one of claims 1 to 3, wherein the time required for the recording scan is determined by the width at which recording is performed by the recording scan in the scanning direction of the recording head. The recording apparatus according to any one of claims 1 to 4, wherein the time required for the recording scan is determined by the size of the recording medium on which the ink is ejected. The recording apparatus according to any one of claims 1 to 5, wherein the time required for the recording scan is determined by the scanning speed of the recording head during the recording scan. The recording device according to claim 6, wherein the scanning speed is determined according to a mode in which recording is performed. The recording according to any one of claims 1 to 7, wherein the control means controls at least one of the acceleration and the deceleration according to the humidity of the place where the recording device is installed. apparatus. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A supply flow path for supplying ink from the tank to the recording head, and
It is a recording device equipped with
The recording head
A first liquid chamber having a connection with the supply flow path and
A second liquid chamber communicating with the first liquid chamber via the pressure chamber,
A volume variable portion that changes the volume of the second liquid chamber,
Have,
A recording device including a control means for controlling at least one of acceleration and deceleration of the recording head at the time of reversal of the reciprocating scanning according to the humidity of the place where the recording device is installed. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A first flow path capable of supplying ink from the tank to the recording head,
A second flow path different from the first flow path, which can supply ink from the tank to the recording head, and
It is a recording device equipped with
The recording head
A first liquid chamber having a connection portion with the first flow path and
A second liquid chamber that communicates with the first liquid chamber via the pressure chamber and has a connection portion with the second flow path.
Have,
A recording device including a control means for controlling at least one of acceleration and deceleration of the recording head at the time of reversal of the reciprocating scanning according to the humidity of the place where the recording device is installed. The claim is characterized in that when the humidity is a third value, at least one of the acceleration and the deceleration is reduced as compared with the case where the humidity is a fourth value lower than the third value. Item 8. The recording apparatus according to any one of Items 8 to 10. One of claims 1 to 11, wherein the control means controls at least one of the acceleration and the deceleration in the recording scan according to the number of discharges discharged in the recording scan of the recording head. The recording device according to paragraph 1. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A supply flow path for supplying ink from the tank to the recording head, and
It is a recording device equipped with
The recording head
A first liquid chamber having a connection with the supply flow path and
A second liquid chamber communicating with the first liquid chamber via the pressure chamber,
A volume variable portion that changes the volume of the second liquid chamber,
Have,
At least one of the acceleration and deceleration of the recording head at the time of reversal of the reciprocating scan in the recording scan is set according to the number of ejected inks in the recording scan of the recording head accompanied by the ejection of ink from the ejection port. A recording device including a control means for controlling. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A first flow path capable of supplying ink from the tank to the recording head,
A second flow path different from the first flow path, which can supply ink from the tank to the recording head, and
It is a recording device equipped with
The recording head
A first liquid chamber having a connection portion with the first flow path and
A second liquid chamber that communicates with the first liquid chamber via the pressure chamber and has a connection portion with the second flow path.
Have,
At least one of the acceleration and deceleration of the recording head at the time of reversal of the reciprocating scan in the recording scan is set according to the number of ejected inks in the recording scan of the recording head accompanied by the ejection of ink from the ejection port. A recording device including a control means for controlling. The control means is characterized in that at least one of the acceleration and the deceleration is reduced when the discharge number is the fifth value, as compared with the case where the discharge number is the sixth value smaller than the fifth value. The recording device according to any one of claims 12 to 14. The control means according to any one of claims 1 to 15, wherein the control means controls the acceleration at the end of the recording head in the scanning direction to be smaller than the deceleration at the end. Recording device. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A supply flow path for supplying ink from the tank to the recording head, and
It is a recording device equipped with
The recording head
A first liquid chamber having a connection with the supply flow path and
A second liquid chamber communicating with the first liquid chamber via the pressure chamber,
A volume variable portion that changes the volume of the second liquid chamber,
Have,
A recording device including a control means for controlling the acceleration of the recording head at the end of the recording head in the scanning direction to be smaller than the deceleration at the end. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A first flow path capable of supplying ink from the tank to the recording head,
A second flow path different from the first flow path, which can supply ink from the tank to the recording head, and
It is a recording device equipped with
The recording head
A first liquid chamber having a connection portion with the first flow path and
A second liquid chamber that communicates with the first liquid chamber via the pressure chamber and has a connection portion with the second flow path.
Have,
A recording device including a control means for controlling the acceleration of the recording head at the end of the recording head in the scanning direction to be smaller than the deceleration at the end. Any of claims 16 to 18, wherein the control means controls the acceleration start position of the recording head so that the scanning speed of the recording head performing the recording is within a predetermined range. The recording device according to one item. The control means controls the deceleration start position of the recording head at the end so that the position where the recording head decelerates and stops at the end becomes the acceleration start position of the recording head at the end. The recording device according to any one of claims 16 to 18. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A supply flow path for supplying ink from the tank to the recording head, and
It is a control method of a recording device including
The recording head
A first liquid chamber having a connection with the supply flow path and
A second liquid chamber communicating with the first liquid chamber via the pressure chamber,
A volume variable portion that changes the volume of the second liquid chamber,
Have,
It is characterized by having a step of controlling at least one of acceleration and deceleration of the recording head at the time of reversal of the reciprocating scanning according to the time required for recording scanning of the recording head accompanied by ejection of ink from the ejection port. Control method of the recording device. A tank that holds ink and
A recording head that has a discharge port for ejecting ink and a pressure chamber filled with ink, and ejects ink for recording while reciprocating scanning.
A first flow path capable of supplying ink from the tank to the recording head,
A second flow path different from the first flow path, which can supply ink from the tank to the recording head, and
It is a control method of a recording device including
The recording head
A first liquid chamber having a connection portion with the first flow path and
A second liquid chamber that communicates with the first liquid chamber via the pressure chamber and has a connection portion with the second flow path.
Have,
It is characterized by having a step of controlling at least one of acceleration and deceleration of the recording head at the time of reversal of the reciprocating scanning according to the time required for recording scanning of the recording head accompanied by ejection of ink from the ejection port. Control method of the recording device.

Images