Recording device

Abstract

To suppress an increase in an ink amount of preliminary discharge.SOLUTION: A recording device includes: a reading part 52 that reads an image of a document, a recording part 51 including a conveyance unit that conveys a recording medium and a recording head that discharges ink to the recording medium conveyed by the conveyance unit to record the image; and a control unit that controls document reading operation of reading the image of the document by the reading part 52 and recording operation of conveying the recording medium by the conveyance unit and recording the image by the recording head. When predetermined operation in the recording operation is started after the document reading operation stops, the control unit changes a discharge amount of ink by recovery operation of recovering a discharge state of the ink discharged from the recording head.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a recording device. [Background technology]

[0002] Inkjet recording devices are known that perform preliminary ejection of ink from a recording head during or upon completion of a transport operation that transports a recording medium, such as a feeding operation of the recording medium or an operation of turning the recording medium over. By performing preliminary ejection, the performance of the recording head can be restored, thereby preventing ejection defects from the recording head even if a transport operation causes a period during which ink is not ejected from the recording head. Patent Document 1 discloses a technology that omits preliminary ejection at the completion of a feeding operation in the case of a feeding operation in which the period during which ink is not ejected from the recording head is short.

[0003] It is also known that minimizing the power supply capacity of a recording device to the minimum necessary contributes to downsizing the recording device and reducing manufacturing costs. Patent Document 2 discloses a technology that makes it possible to suppress the power consumption of a recording device and reduce the power supply capacity by staggering the execution timing of multiple parallel operations in the recording device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-43495 [Patent Document 2] Japanese Patent Application Publication No. 2023-158430 Summary of the Invention [Problem to be solved by the invention]

[0005] In a recording device equipped with a reading unit that reads an image from a document, it is possible to reduce the power consumption of the recording device by shifting the timing of the document reading operation by the reading unit and the recording medium transport operation. In this case, the recording medium transport operation starts after the document reading operation stops, so the time during which ink is not ejected from the recording head increases. If the amount of ink ejected from the recording head during preliminary ejection is set taking this into consideration, the amount of ink ejected during preliminary ejection will increase.

[0006] The present disclosure aims to suppress an increase in the amount of ink ejected in a preliminary ejection. [Means for solving the problem]

[0007] A recording device according to one aspect of the present disclosure includes a reading unit that reads an image of a document, a transport unit that transports the recording medium, and a recording unit having a recording head that ejects ink onto the recording medium transported by the transport unit to record an image, and a control unit that controls a document reading operation that reads an image of the document by the reading unit, and a recording operation that transports the recording medium by the transport unit and records an image by the recording head, and the control unit changes the amount of ink discharged by a recovery operation that restores the ejection state of ink ejected from the recording head when it waits for the document reading operation to stop and then starts a predetermined operation in the recording operation. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to suppress an increase in the amount of ink ejected in preliminary ejection. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. [Figure 2] FIG. 2 is a perspective view showing a recording unit of the recording apparatus. [Figure 3] FIG. [Figure 4] FIG. 2 is a side cross-sectional view showing a transport path for a recording medium. [Figure 5]FIG. 2 is a side cross-sectional view showing a transport path for a recording medium. [Figure 6] FIG. 2 is a plan view showing a flatbed scanner unit. [Figure 7] 3 is a side cross-sectional view showing a document transport path in the ADF scanner unit. FIG. [Figure 8] 3 is a side cross-sectional view showing a document transport path in the ADF scanner unit. FIG. [Figure 9] FIG. 2 is a perspective view of a recovery unit. [Figure 10] FIG. 2 is a schematic diagram showing the positional relationship between a recording head and a cap. [Figure 11] FIG. 2 is a block diagram showing a control system of the recording apparatus. [Figure 12] FIG. 2 is a schematic diagram showing the relationship between the torque of a DC motor and the current flowing through the DC motor. [Figure 13] FIG. 4 is a schematic diagram showing the relationship between the power consumption and the power supply capacity of each motor. [Figure 14] 10 is a flowchart showing an example of control of a document reading operation by an ADF scanner unit. [Figure 15] 10 is a flowchart illustrating an example of control of a double-sided recording operation by a recording unit. [Figure 16] 10 is a flowchart illustrating an example of control of a front-to-back reversing operation by a recording unit. DETAILED DESCRIPTION OF THE INVENTION

[0010] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Note that the following embodiments do not limit the scope of the present disclosure, and not all combinations of features described in the following embodiments are necessarily essential to the solutions of the present disclosure. It should be understood that appropriate modifications and improvements to the following embodiments based on the common knowledge of those skilled in the art, within the scope of the present disclosure, are also within the scope of the present disclosure. Note that the same components will be denoted by the same reference numerals.

[0011] <<Embodiment 1>> <Configuration of recording device> FIG. 1 is a perspective view of an inkjet recording apparatus 1 (hereinafter referred to as recording apparatus 1) according to this embodiment. The recording apparatus 1 according to this embodiment is a multifunction peripheral having the functions of recording an image on a recording medium, reading an image from an original document, and copying the image from the original document onto a recording medium. As shown in FIG. 1, the recording apparatus 1 includes a housing 50, a recording unit 51, and a reading unit 52. The recording unit 51 is provided inside the housing 50. The reading unit 52 is provided on top of the housing 50. In each of the figures referred to below, the Z direction indicates the vertical direction, and intersects (or is perpendicular in this embodiment) the XY plane defined by the X and Y directions.

[0012] FIG. 2 is a perspective view showing a recording unit 51 of the recording device 1. FIG. 3 is a side cross-sectional view of the recording unit 51. As shown in FIGS. 2 and 3, the recording unit 51 includes a feed roller 11, a conveyance roller 12, a pinch roller 13, a discharge roller 21, and a relay roller 22 as a transport unit. The recording unit 51 also includes a platen 14, a recording head 15, a carriage 20, and a recording feed unit 17. The feed roller 11 rotates around an axis parallel to the X axis (clockwise when viewed from the front side of the paper in FIG. 3) to feed a recording medium P (see FIG. 4(a)) loaded on the recording feed unit 17 to the conveyance roller 12. Examples of the recording medium P include sheet materials such as recording paper, plastic sheets, and overhead projector sheets. The conveyance roller 12 rotates around an axis parallel to the X axis to transport the recording medium P fed from the feed roller 11. The pinch roller 13 pinches the recording medium P between itself and the conveying roller 12. The pinch roller 13 is driven by the conveying roller 12 with the recording medium P interposed therebetween.

[0013] The recording medium P is conveyed onto a platen 14 while being sandwiched between a conveying roller 12 and a pinch roller 13. Ink droplets ejected from ejection openings (not shown) of a recording head 15 land on the recording medium P on the platen 14, recording characters, symbols, images, etc. The recording medium P with the recorded image, etc. is discharged by an ejection roller 21 to the outside of the housing 50 (for example, to a recording ejection section (not shown) capable of stacking the recording medium P). The feed roller 11, conveying roller 12, and ejection roller 21 are rotated by a conveying motor 105 (see FIG. 11). As shown in FIG. 2, the recording head 15 is held by a carriage 20 so that the ejection openings face the recording medium P. The carriage 20 is supported by a guide rail 19 so as to be slidable in the X direction. The carriage 20 supported by the guide rail 19 is driven by a carriage motor 104 (see FIG. 11). The recording head 15 held by the carriage 20 moves back and forth in the X direction along the guide rails 19. Therefore, the recording head 15 can record on any part of the recording medium P in the width direction (X direction).

[0014] 3, a sheet detection sensor 23 is provided between the feed roller 11 and the transport roller 12. The sheet detection sensor 23 detects the recording medium P fed to the transport roller 12 by the feed roller 11. If the sheet detection sensor 23 does not detect the recording medium P even when the feed roller 11 rotates, this indicates that a jam error or the like has occurred.

[0015] 4 and 5 are side cross-sectional views showing the transport path of the recording medium P. FIG. 4(a) is a side cross-sectional view showing the transport path of the recording medium P when performing a recording operation on the first side (front side) of the recording medium P. FIG. 4(b) is a side cross-sectional view showing the inversion path of the recording medium P when performing an inversion operation of the recording medium P. FIG. 5(a) is a side cross-sectional view showing the tilt correction operation of the recording medium P on the inversion path. FIG. 5(b) is a side cross-sectional view showing the transport path of the recording medium P when performing a recording operation on the second side (back side) of the recording medium P.

[0016] In the transport path of the recording medium P shown in FIG. 4(a), a recording operation is performed on the first side (front side) of the recording medium P. As described above, the recording medium P loaded on the recording feed unit 17 is transported onto the platen 14 by the feed roller 11 and the transport roller 12. An image or the like is recorded by the recording head 15 on the first side of the recording medium P on the platen 14. The discharge roller 21 rotates around an axis parallel to the X axis (counterclockwise as viewed from the front side of the paper in FIG. 4(a)) to transport the recording medium P in the discharge direction (+Y direction). When the recording operation on the first side of the recording medium P is completed, the discharge roller 21 rotates in the opposite direction (clockwise as viewed from the front side of the paper in FIG. 4(a)) to transport the recording medium P in the direction opposite to the discharge direction (-Y direction). The recording medium P transported in the direction opposite to the discharge direction of the recording medium P is again sandwiched between the transport roller 12 and the pinch roller 13.

[0017] Next, the recording medium P is turned over in the reverse path of the recording medium P shown in FIG. 4(b). The conveyance roller 12 rotates in the opposite direction (clockwise as viewed from the front side of the paper in FIG. 4(b)) to the direction used for recording on the first side of the recording medium P, and conveys the recording medium P to the relay roller 22 provided on the hairpin-shaped reverse path. The relay roller 22 rotates around an axis parallel to the X axis (counterclockwise as viewed from the front side of the paper in FIG. 4(b)), and conveys the recording medium P to the conveyance roller 12. At this time, the recording medium P is turned over upside down. Note that the relay roller 22 and the conveyance roller 12 share a drive source (the conveyance motor 105 shown in FIG. 11), but rotate in the same direction regardless of the rotation direction of the conveyance roller 12. Also, as shown in FIG. 4(b), when the leading edge of the recording medium P moves to a position immediately before reaching the sheet detection sensor 23, the conveyance roller 12 (the conveyance motor 105) temporarily stops.

[0018] Next, as shown in Figure 5(a), an inclination correction operation is performed on the reversing path of the recording medium P to correct the inclination of the recording medium P. The conveying roller 12 stops once during the operation of reversing the recording medium P, and then rotates again in the reverse direction (clockwise as viewed from the front side of the paper in Figure 5(a)). The leading edge of the recording medium P conveyed by the relay roller 22 passes the sheet detection sensor 23 and hits the conveying roller 12 rotating in the reverse direction. By hitting the leading edge of the recording medium P against the conveying roller 12 rotating in the reverse direction, the inclination of the recording medium P is corrected.

[0019] Next, a recording operation is performed on the second side (rear side) of the recording medium P along the conveyance path of the recording medium P shown in FIG. 5(b). After the correction operation of the recording medium P, the conveyance rollers 12 rotate in the same direction (counterclockwise as viewed from the front side of the paper in FIG. 5(b)) as during the recording operation on the first side (front side) of the recording medium P. The recording medium P, now upside down, is conveyed onto the platen 14 by the conveyance rollers 12. An image or the like is recorded on the second side of the recording medium P on the platen 14 by the recording head 15. The discharge rollers 21 rotate in the same direction (counterclockwise as viewed from the front side of the paper in FIG. 5(b)) as during the recording operation on the first side of the recording medium P, and convey the recording medium P in the discharge direction (+Y direction). When the recording operation on the second side of the recording medium P is completed, the recording medium P is discharged by the discharge rollers 21 to the outside of the housing 50 (recording discharge section). 4(a), 4(b), 5(a), and 5(b) makes it possible to record on both sides of the recording medium P with a single feeding operation from the feeding roller 11. Hereinafter, the recording operation on both sides of the recording medium P by the recording unit 51 will be referred to as a double-sided recording operation. The transport operation for recording on both sides of the recording medium P will be referred to as a double-sided transport operation of the recording medium P.

[0020] As shown in Fig. 1, the reading unit 52 includes two types of document reading units: a flatbed scanner unit 53 and an ADF scanner unit 54. Fig. 6 is a plan view showing the flatbed scanner unit 53. Fig. 6(a) is a plan view showing a state in which the reading sensor 61 is moving in the flatbed scanner unit 53. Fig. 6(b) is a plan view showing a state in which the reading sensor 61 has moved to a second reading position in the flatbed scanner unit 53.

[0021] As shown in FIG. 6(a), the flatbed scanner unit 53 includes a reading sensor 61 for reading an image of a document and a document table 66. The reading sensor 61 is formed to extend in the width direction (Y direction) of the document. The reading sensor 61 is movable in the X direction below the document table 66 between a first reading position (see FIG. 7(a)) at the end side in the -X direction and a second reading position (see FIG. 6(b)) at the end side in the +X direction. The reading sensor 61 is driven by a scanner motor 106 (see FIG. 11). The flatbed scanner unit 53 reads an image of a document placed on the document table 66 by moving the reading sensor 61 in the X direction using the scanner motor 106 to scan the document.

[0022] 7 and 8 are side cross-sectional views showing the transport path of the original document in the ADF scanner unit 54. FIG. 7(a) is a side cross-sectional view showing the transport path of the original document R from the reading feed unit (not shown). FIG. 7(b) is a side cross-sectional view showing the transport path of the original document R from the reading feed unit to a position just before the reading sensor 61. FIG. 8(a) is a side cross-sectional view showing the transport path of the original document R passing above the reading sensor 61. FIG. 8(b) is a cross-sectional view showing the transport path of the original document R transported to the reading discharge unit 64.

[0023] As shown in FIG. 7(a), the ADF scanner unit 54 includes the above-mentioned reading sensor 61. Furthermore, the ADF scanner unit 54 includes, as an automatic document feeder (ADF), a reading feed roller 62, a reading feed unit (not shown), and a reading discharge unit 64. The reading feed roller 62 transports the document R loaded on the reading feed unit to the reading discharge unit 64 via above the reading sensor 61, which has moved to the first reading position. The reading feed roller 62 is rotationally driven by an ADF motor 107 (see FIG. 11).

[0024] As shown in the order of FIGS. 7(a) and 7(b), the original document R is fed by the reading feed roller 62 from the reading feed section to the transport path in the ADF scanner section 54 and transported above the reading sensor 61. Thereafter, as shown in the order of FIGS. 8(a) and 8(b), the original document R is passed above the reading sensor 61 and transported to the reading discharge section 64 by the reading feed roller 62. When the original document R passes above the reading sensor 61, the image of the original document R is read by the reading sensor 61. When multiple sheets of the original document R are stacked in the reading feed section, as shown in FIG. 8(b), the subsequent original document R is fed to the transport path in the ADF scanner section 54 before the preceding original document R passes above the reading sensor 61 and is discharged to the reading discharge section 64.

[0025] As shown in FIG. 2, the recording apparatus 1 is also provided with a recovery unit 31. FIG. 9 is a perspective view of the recovery unit 31. As shown in FIG. 9, the recovery unit 31 includes a cap 32, a suction pump 33, a suction tube 34, a discharge tube 36, a discharge unit 35, and a waste ink tank 41. The cap 32 caps the ejection surface 16 (see FIG. 10) formed at the bottom of the recording head 15. The ejection surface 16 of the recording head 15 is formed with a plurality of ejection ports (not shown) for ejecting ink from the recording head 15. Two caps 32 are provided, one for black ink and one for color ink, but detailed description of each cap 32 will be omitted. The suction pump 33 sucks ink from the cap 32 through the suction tube 34. The suction tube 34 connects the cap 32 and the suction pump 33. The discharge unit 35 discharges the waste ink sucked by the suction pump 33 into the waste ink tank 41. The discharge tube connects the suction pump 33 and the discharge unit . The waste ink tank 41 stores the waste ink discharged from the discharge unit .

[0026] FIG. 10 is a schematic diagram showing the positional relationship between the recording head 15 and the cap 32. In an inkjet recording device, if the recording head 15 does not eject ink for a certain period of time or longer, the ink in the recording head 15 may dry out, potentially resulting in ejection defects. To prevent ejection defects, the recording head 15 must perform preliminary ejection. During preliminary ejection, as shown in FIG. 10, the carriage 20 moves in the X direction to a position where the ejection surface 16 of the recording head 15 faces the cap 32. The recording head 15 then ejects ink toward the cap 32 without recording an image. Preliminary ejection by the recording head 15 above the cap 32 allows the recovery unit 31 to collect waste ink in the waste ink tank 41.

[0027] <Recording device control system> FIG. 11 is a block diagram showing a control system of the recording apparatus 1 according to this embodiment. As shown in FIG. 11, the recording apparatus 1 includes, as control units, an MPU 101, a ROM 102, a RAM 103, a printhead driver 108, and a motor driver 109. The recording apparatus 1 also includes an operation / display unit 110 and an I / F unit 120. The MPU (Micro Processing Unit) 101 controls the entire recording apparatus 1, including the operation of each unit and data processing. The MPU 101 is electrically connected to the ROM 102, RAM 103, the printhead driver 108, and the motor driver 109. The ROM (Read Only Memory) 102 stores programs executed by the MPU 101 and various data. The RAM (Random Access Memory) 103 temporarily stores processing data executed by the MPU 101, data received from a host computer 150, and the like.

[0028] The printhead driver 108 controls the printhead 15. The motor driver 109 controls the carriage motor 104, the transport motor 105, the scanner motor 106, and the ADF motor 107. The motor driver 109 includes a current upper limit control circuit 119 that sets the upper limit of the current flowing through the carriage motor 104, the transport motor 105, the scanner motor 106, and the ADF motor 107. The current upper limit control circuit 119 can set multiple levels of current upper limit. The multiple levels of current upper limit set by the current upper limit control circuit 119 can be switched based on a command from the MPU 101.

[0029] The MPU 101 is also electrically connected to an operation / display unit 110, a reading unit 52, and an I / F unit 120. The operation / display unit 110 transmits an operation signal corresponding to an operation on the operation / display unit 110 to the MPU 101. The reading unit 52 transmits image data of the original document read by the reading sensor 61 to the MPU 101. The MPU 101 communicates with the host computer 150 via an I / F unit (interface unit) 120. For example, the MPU 101 can output the image data of the original document transmitted from the reading unit 52 to the host computer 150 from the I / F unit 120. The host computer 150 is provided with a printer driver 151 that, when a user issues a command to execute a recording operation, compiles the recorded image and recording information related to the quality of the recorded image and the like, and transmits the information to the recording device 1.

[0030] Next, we will explain the relationship between the upper limit of the current flowing through the motor and the power supply capacity. FIG. 12 is a schematic diagram showing the relationship between the torque [N·m] of a DC motor and the current [A] flowing through the DC motor. To meet the demands of low cost and high stopping accuracy, DC motors are used for the carriage motor 104, transport motor 105, scanner motor 106, and ADF motor 107. As shown in FIG. 12, there is a nearly linear relationship between the torque of the DC motor and the current flowing through the DC motor. In other words, when a DC motor generates a large torque, the current flowing through the DC motor also increases. The larger the upper limit Cp of the current set by the current upper limit control circuit 119, the larger the torque Tp corresponding to that upper limit Cp of the current. Because the power consumption of a motor is proportional to the square of the current flowing through the motor, a large current flowing through the motor results in a large amount of power consumption.

[0031] FIG. 13 is a schematic diagram showing the relationship between the power consumption of each motor and the power supply capacity. FIG. 13(a) is a schematic diagram showing the relationship between the power consumption [W] of the carry motor 105, carriage motor 104, ADF motor 107, scanner motor 106, and other power consumption units and the power supply capacity Pc of the recording apparatus 1. The first bar graph B1 in FIG. 13(a) shows the maximum power consumption of the carry motor 105. The second bar graph B2 in FIG. 13(a) shows the maximum power consumption of the carriage motor 104. The third bar graph B3 in FIG. 13(a) shows the maximum power consumption of the ADF motor 107. The fourth bar graph B4 in FIG. 13(a) shows the maximum power consumption of the scanner motor 106. The fifth bar graph B5 in FIG. 13(a) shows the maximum power consumption of other power consumption units (not shown). The power consumption of the conveying motor 105, the carriage motor 104, the ADF motor 107, the scanner motor 106, and other power consuming parts is smaller than the power supply capacity Pc.

[0032] FIG. 13(b) is a graph showing the relationship between the total power consumption and the power supply capacity Pc when multiple motors operate simultaneously. As shown by the first total bar graph BS1, in many cases where the recording unit 51 and the reading unit 52 operate in parallel, the total power consumption (B12a) of each motor in the recording unit 51, the power consumption of the ADF motor 107, and other power consumption units is less than the power supply capacity Pc. As shown by the second total bar graph BS2, when the power consumption of each motor in the recording unit 51 is high, the total power consumption (B12b) of each motor in the recording unit 51, the power consumption of the ADF motor 107, and other power consumption units exceeds the power supply capacity Pc. If the total power consumption temporarily exceeds the power supply capacity Pc, there is a possibility of a power outage due to a power shortage. As shown by the second total bar graph BS2, an example of a case where the power consumption (B12b) of each motor in the recording unit 51 is high is when tilt correction of the recording medium P is performed. When the tilt correction operation of the recording medium P is not being performed, the power consumption (B12a) of each motor of the recording unit 51 is relatively small, as shown in the first total bar graph BS1. As shown in the third total bar graph BS3, by performing exclusive control to restrict the operation of either the recording unit 51 or the reading unit 52 (e.g., the reading unit 52), it is possible to allocate sufficient power to the operation of the recording unit 51, which consumes a large amount of power. For example, as shown in the third total bar graph BS3, the total power consumption (B12b) of each motor of the recording unit 51 and the power consumption of the other power consuming units is less than the power supply capacity Pc. Note that in many cases, the recording unit 51 and the reading unit 52 can operate in parallel, so exclusive control is unlikely to degrade the operability.

[0033] <Method for controlling a recording device> Next, a control method for the recording device 1 according to this embodiment will be described. In the recording device 1, the reading unit 52 (flatbed scanner unit 53 or ADF scanner unit 54) performs an original reading operation to read an image of the original R. The recording unit 51 performs a recording operation to record an image on the recording medium P based on recording information (image data) transmitted from the host computer 150. Furthermore, in the recording device 1, the recording unit 51 performs a copying operation to record the image of the original R read by the reading unit 52 on the recording medium P. The original reading operation, recording operation, and copying operation are controlled by the MPU 101 constituting the control unit. Except for the case of performing a predetermined operation in the recording operation (for example, an operation to correct the tilt of the recording medium P), the recording unit 51 and the reading unit 52 can operate in parallel.

[0034] As described above, during a double-sided recording operation in which the recording unit 51 records images on both the front and back sides of the recording medium P, the double-sided conveyance operation of the recording medium P is performed through a series of operations shown in FIGS. 4(a), 4(b), 5(a), and 5(b). When performing an inclination correction operation in which the leading edge of the recording medium P abuts against the conveyance roller 12, the recording medium P is pressed strongly against the reverse path, requiring a large torque from the conveyance motor 105 that rotates the relay roller 22, resulting in increased power consumption by the conveyance motor 105. If the torque of the conveyance motor 105 is insufficient during the inclination correction operation of the recording medium P, the inclination of the recording medium P will not be corrected sufficiently, resulting in recording being performed on the recording medium P in an inclined state. When performing an inclination correction operation of the recording medium P, exclusive control is performed to restrict the operation of either the recording unit 51 or the reading unit 52 (e.g., the reading unit 52), thereby enabling sufficient power to be allocated to the operation of the conveyance motor 105, which consumes a large amount of power. After the tilt correction operation of the recording medium P is performed, the parallel operation of the recording unit 51 and the reading unit 52 is resumed.

[0035] <Original scanning operation> Fig. 14 is a flowchart showing an example of control of a document reading operation by the ADF scanner unit 54. In the following description, each step will be simply represented as S101, etc. Furthermore, each step (process) of the flowchart shown in Fig. 14 is executed by the MPU 101 executing a control program stored in the ROM 102.

[0036] In S101, the MPU 101 determines whether the exclusive control of the recording unit 51 has ended. Here, as described with reference to FIG. 13B, the exclusive control of the recording unit 51 refers to control that restricts the operation of the reading unit 52, including the ADF scanner unit 54, when the recording unit 51 temporarily performs an operation that consumes a lot of power. While the exclusive control of the recording unit 51 is being performed, a flag indicating that the exclusive control of the recording unit 51 is being performed may be set. While the exclusive control of the recording unit 51 is being performed, i.e., if the determination in S101 is NO, the MPU 101 does not proceed from S101. During this time, the MPU 101 causes the recording unit 51 to perform an operation that consumes a lot of power (for example, an operation to correct the tilt of the recording medium P). If the exclusive control of the recording unit 51 has ended, i.e., if the determination in S101 is YES, the MPU 101 proceeds to S102.

[0037] In S102, the MPU 101 starts exclusive control of the reading unit 52. Here, the exclusive control of the reading unit 52 is paired with the exclusive control of the recording unit 51 described above, and is control that restricts operations that consume a lot of power by the recording unit 51 while the reading unit 52 including the ADF scanner unit 54 is operating. Note that while the exclusive control of the reading unit 52 is being performed, a flag indicating that the exclusive control of the reading unit 52 is being performed may be set.

[0038] In S103, the MPU 101 feeds one of the documents R stacked on the reading feed unit (not shown) to the transport path in the ADF scanner unit 54 by the reading feed roller 62 (ADF motor 107), and transports it above the reading sensor 61.

[0039] In S104, the MPU 101 causes the reading feed roller 62 (ADF motor 107) to pass the document R from the reading feed unit above the reading sensor 61, and reads the image of the document R with the reading sensor 61. At this time, the MPU 101 may read the images of both the front and back sides of the document R with the ADF scanner unit 54 including the reading sensor 61, or may read the image of one side of the document R.

[0040] In S105, the MPU 101 determines whether or not a subsequent document R is loaded on the reading feed section. For example, it is possible to determine whether or not a subsequent document R is loaded on the reading feed section by using a document detection sensor (not shown) mounted on the reading feed section that can detect the presence or absence of a document R in the reading feed section. If a subsequent document R is not loaded on the reading feed section, it means that the images of all documents R loaded on the reading feed section have been read. If a subsequent document R is loaded on the reading feed section, that is, if the determination in S105 is NO, the MPU 101 proceeds to S106. If a subsequent document R is not loaded on the reading feed section, that is, if the determination in S105 is YES, the MPU 101 proceeds to S108.

[0041] In S106, the MPU 101 determines whether or not there is a request for exclusive control of the recording unit 51. Here, a state in which there is a request for exclusive control of the recording unit 51 refers to a state in which the recording unit 51 is attempting to temporarily perform an operation that consumes a lot of power, but the operation of the recording unit 51 is restricted by the exclusive control of the reading unit 52. If there is a request for exclusive control of the recording unit 51, that is, if the determination in S106 is NO, the MPU 101 proceeds to S108. If there is no request for exclusive control of the recording unit 51, that is, if the determination in S106 is YES, the MPU 101 proceeds to S107.

[0042] In S107, the MPU 101 discharges the original document R read in S104 to the reading discharge unit 64 using the reading feed roller 62 (ADF motor 107). At this time, the MPU 101 also feeds one of the original documents R stacked in the reading feed unit to the transport path in the ADF scanner unit 54 using the reading feed roller 62 (ADF motor 107), and transports it above the reading sensor 61. By simultaneously discharging the read original document R and feeding the subsequent original document R, the time required to read the images of multiple original documents R can be shortened. After S107, the MPU 101 returns to S104 and reads the image of the subsequent original document R. If multiple original documents R are stacked in the reading feed unit and there is no request for exclusive control of the recording unit 51, the MPU 101 repeats S104 and S107 to continuously read the images of multiple original documents R.

[0043] In S108, the MPU 101 causes the reading / feeding roller 62 (ADF motor 107) to discharge the original R read in S104 to the reading / discharging unit 64. Unlike S107, the subsequent original R is not fed.

[0044] In S109, the MPU 101 ends the exclusive control of the reading unit 52. If the operation of the recording unit 51 has been restricted by the exclusive control of the reading unit 52, the MPU 101 starts the double-sided recording operation by the recording unit 51 and performs exclusive control of the recording unit 51 (details will be described later).

[0045] In S110, the MPU 101 determines whether or not a subsequent document R is loaded on the reading feed section, as in S105. If a subsequent document R is loaded on the reading feed section, i.e., if the determination in S110 is NO, the MPU 101 returns to S101. Note that while exclusive control of the recording unit 51 is being performed, the MPU 101 restricts the operation of the reading unit 52 in S101. As described above, if a subsequent document R is not loaded on the reading feed section, it means that the images of all documents R loaded on the reading feed section have been read. If a subsequent document R is not loaded on the reading feed section, i.e., if the determination in S110 is YES, the MPU 101 ends the processing. Note that since the flatbed scanner unit 53 is configured to read the image of a single document, a description of the control of the document reading operation by the flatbed scanner unit 53 will be omitted.

[0046] <Double-sided recording operation> Fig. 15 is a flowchart showing an example of control of double-sided recording operation by the recording unit 51. Note that each step (process) of the flowchart shown in Fig. 15 is executed by the MPU 101 executing a control program stored in the ROM 102. Also, the control example of double-sided recording operation shown in Fig. 15 is a control example when images are recorded on both the front and back sides of one recording medium P.

[0047] In S201, the MPU 101 causes the feed roller 11 (conveyance motor 105) to feed the recording medium P to the conveyance roller 12, and causes the conveyance roller 12 (conveyance motor 105) to convey the recording medium P onto the platen 14. When feeding the recording medium P, the MPU 101 corrects the inclination of the recording medium P by abutting the leading edge of the recording medium P against the conveyance roller 12. At this time, the torque required by the conveyance motor 105, i.e., the power consumption of the conveyance motor 105, is smaller than during the front-to-back reversal operation described below. This allows the recording unit 51 and the reading unit 52 to operate in parallel, so the MPU 101 does not perform exclusive control of the recording unit 51 (and exclusive control of the reading unit 52).

[0048] In S202, the MPU 101 records an image on the first surface (front side) of the recording medium P on the conveying path of the recording medium P shown in Fig. 4(a). At this time, the MPU 101 conveys the recording medium P onto the platen 14 using the conveying roller 12, and moves the carriage 20 in the X direction in Fig. 4(a) using the carriage motor 104, and ejects ink from the recording head 15 toward the first surface of the recording medium P.

[0049] In S203, the MPU 101 causes the recording unit 51 to perform an operation of turning over the recording medium P. The details of the operation of turning over the recording medium P will be explained later.

[0050] In S204, the MPU 101 records an image on the second surface (rear surface) of the recording medium P on the conveying path of the recording medium P shown in Fig. 5(b). At this time, the MPU 101 conveys the recording medium P onto the platen 14 using the conveying roller 12, and moves the carriage 20 in the X direction in Fig. 5(b) using the carriage motor 104, and ejects ink from the recording head 15 toward the second surface of the recording medium P.

[0051] In S205, the MPU 101 causes the discharge roller 21 (conveyance motor 105) to discharge the recording medium P, on which images have been recorded on both sides, to the outside of the housing 50 (recording discharge section), and ends the process. Note that in the flowchart shown in Fig. 15, by omitting the processes of S203 and S204, it is possible to perform a single-sided recording operation in which the recording section 51 records an image on one side of the recording medium P.

[0052] <Front and back flipping> 16 is a flowchart showing an example of control of the front / back reversal operation by the recording unit 51. Note that the MPU 101 executes a control program stored in the ROM 102, thereby executing each step (process) of the flowchart shown in FIG.

[0053] In S301, the MPU 101 rotates the conveying roller 12 by the conveying motor 105 in the direction opposite to that during the recording operation on the recording medium P, thereby drawing the recording medium P into the reversal path shown in Fig. 4(b). At this time, when the leading edge of the recording medium P moves to a position immediately before reaching the sheet detection sensor 23, the MPU 101 stops the rotation of the conveying roller 12 (conveying motor 105).

[0054] In S302, the MPU 101 starts measuring the waiting time, which is the time during which processing cannot proceed due to repetition of S304, which will be described later.

[0055] In S303, the MPU 101 requests exclusive control of the recording unit 51. In S307, which will be described later, the MPU 101 attempts to inhibit the operation of the reading unit 52 in order to temporarily perform an operation that consumes a large amount of power (a tilt correction operation for the recording medium P).

[0056] In S304, the MPU 101 determines whether the exclusive control of the reading unit 52 has ended. While the exclusive control of the reading unit 52 is being performed, that is, if the determination in S304 is NO, the MPU 101 does not proceed with the process from S304. Note that the MPU 101 ends the exclusive control of the reading unit 52 by requesting exclusive control of the recording unit 51, as shown in the example of control of the document reading operation. If the exclusive control of the reading unit 52 has ended, that is, if the determination in S304 is YES, the MPU 101 proceeds to S305.

[0057] In S305, the MPU 101 starts exclusive control of the recording unit 51. By S303 to S305, the operation of the reading unit 52 is restricted, and sufficient power can be allocated to the operation of the recording unit 51 (conveyance motor 105) which consumes a large amount of power.

[0058] In S306, the MPU 101 ends the measurement of the waiting time that started in S302. In this embodiment, the MPU 101 measures the time difference between the time when the processing of S302 is performed and the time when the processing of S306 is performed as the waiting time, and stores the time difference in the RAM 103.

[0059] In S307, the MPU 101 carries out an inclination correction operation to correct the inclination of the recording medium P by carrying the recording medium P using the relay roller 22 (conveyance motor 105) and abutting the leading edge of the recording medium P against the conveyance roller 12 rotating in the reverse direction. At this time, as described above, a large torque is required for the conveyance motor 105, but the exclusive control of the recording unit 51 makes it possible to allocate sufficient power to the operation of the conveyance motor 105.

[0060] In S308, the MPU 101 ends the exclusive control of the recording unit 51. If the operation of the reading unit 52 has been restricted by the exclusive control of the recording unit 51, the MPU 101 resumes the operation of the reading unit 52, as shown in the example of control of the document reading operation.

[0061] In S309, the MPU 101 obtains the waiting time measured in S302 and S306 from the RAM 103 and determines whether the waiting time is equal to or longer than a certain time. If the waiting time is shorter than the certain time, i.e., if the determination in S309 is NO, the MPU 101 proceeds to S311. If the waiting time is equal to or longer than the certain time, i.e., if the determination in S309 is YES, the MPU 101 proceeds to S310.

[0062] In S310, the MPU 101 performs a first preliminary ejection using the printhead 15. In the first preliminary ejection, the printhead 15 ejects ink from its ejection openings multiple times by a first ink amount. If the wait time is lengthened by repeating S304, the time during which ink is not ejected from the printhead 15 increases. Therefore, the MPU 101 performs the first preliminary ejection and the second preliminary ejection to eject a larger amount of ink than when the wait time is shorter (than a certain time), thereby suppressing ejection defects of the printhead 15. On the other hand, if the wait time is shorter than a certain time, the MPU 101 omits the first preliminary ejection to suppress an increase in the amount of ink ejected in the preliminary ejection, thereby appropriately reducing the amount of waste ink that is not used in the printing operation and is discarded. In this way, by changing the amount of ink ejected from the printhead 15 when performing preliminary ejection depending on the wait time, an appropriate amount of ink can be ejected.

[0063] In S311, the MPU 101 causes the conveying roller 12 (conveying motor 105) to convey the recording medium P, which has been turned upside down, onto the platen 14. At this time, the MPU 101 rotates the conveying roller 12 in the same direction as during the recording operation on the first side (front side) of the recording medium P.

[0064] In S312, the MPU 101 performs a second preliminary ejection using the print head 15, and then ends the process. In the second preliminary ejection, the print head 15 ejects ink from the ejection openings a second amount of ink multiple times. By performing the second preliminary ejection even when the first preliminary ejection in S310 is omitted, the MPU 101 can suppress ejection defects of the print head 15 even if a time occurs when ink is not ejected from the print head 15 due to the print medium P being pulled into the reversing path.

[0065] Here, the relationship between the amount of ink ejected from the print head 15 during preliminary ejection and the waiting time will be described. The longer the time when ink is not ejected from the print head 15, the greater the amount of ink required during preliminary ejection to resolve the ejection failure. In this embodiment, when the waiting time is less than a certain time (e.g., 3 seconds), the first ink amount can be set according to the maximum time (e.g., 10 seconds) required for the MPU 101 to execute the control of FIG. 16 (control of the front-to-back reversal operation). Furthermore, when the waiting time is at its maximum, the second ink amount can be set according to the time required for the MPU 101 to execute the control of FIG. 16 and the first ink amount. The maximum waiting time in this embodiment is the time required for the MPU 101 to execute S102 to S105, S108, and S109 of FIG. 14, i.e., the time required for the operation of reading one sheet of document R, which is, for example, 60 seconds.

[0066] In this embodiment, when the waiting time is equal to or longer than a certain time, the first preliminary ejection and the second preliminary ejection are combined to suppress ejection defects of the print head 15, but the method of preliminary ejection is not limited to this. For example, the MPU 101 may continuously change the amount of ink ejected from the print head 15 during preliminary ejection according to the measured waiting time.

[0067] <Copying operation> Next, a copying operation for recording images of originals R on recording medium P will be described with reference to Figures 14 to 16. In this embodiment, a case will be described in which images of multiple originals R are recorded on both the front and back sides of recording medium P. When the user of recording device 1 loads multiple originals R on a reading feed section (not shown) of ADF scanner unit 54 and performs an operation to start the copying operation on operation display unit 110, MPU 101 starts the copying operation. At this time, the user of recording device 1 loads a sufficient number of recording media P for recording images of multiple originals R on recording feed section 17 of recording unit 51.

[0068] In a copying operation, first, an original document reading operation is started by the ADF scanner unit 54 shown in Fig. 14. At the start of the copying operation, exclusive control of the recording unit 51 is not being exercised, so the MPU 101 immediately proceeds from S101 to the processing of S102 and subsequent steps. After the MPU 101 reads the image of one original document R in the processing up to S104, it starts a double-sided recording operation by the recording unit 51 shown in Fig. 15. Note that while a subsequent original document R is loaded on the reading feed unit and there is no request for exclusive control of the recording unit 51, the MPU 101 repeats S104 and S107 to continuously read the images of multiple original documents R.

[0069] When the MPU 101 starts double-sided recording operation by the recording unit 51, the MPU 101 performs the recording operation on the first side (front side) of the recording medium P through the processes of S201 and S202. After performing the recording operation on the first side of the recording medium P, the MPU 101 performs the reverse side reversal operation shown in FIG. 16 through the process of S203. During the reverse side reversal operation, the MPU 101 pulls the recording medium P into the reversal path in S301, and then requests exclusive control of the recording unit 51 in S303. At this time, in the document reading operation shown in FIG. 14, the MPU 101 interrupts the continuous reading of the image of the document R based on the determination in S106, and ends exclusive control of the reading unit 52 in S109. In the reverse side reversal operation shown in FIG. 16, when the MPU 101 ends exclusive control of the reading unit 52, the process proceeds from S304 to S305, and starts exclusive control of the recording unit 51, including the tilt correction operation. At this time, in the document reading operation shown in FIG. 14, the MPU 101 waits for the end of exclusive control of the recording unit 51 in S101. Therefore, in the document turning over operation shown in FIG. 16, the MPU 101 can execute the process of S307 (the tilt correction operation of the recording medium P), which consumes a lot of power, while restricting the operation of the reading unit 52. When the MPU 101 ends the exclusive control of the recording unit 51 in S308, the document reading operation shown in FIG. 14 proceeds to the process of S102 and thereafter, and resumes the document reading operation. Meanwhile, in the document turning over operation shown in FIG. 16, the MPU 101 proceeds to the process up to S312, and performs preliminary ejection of an appropriate amount of ink (first preliminary ejection, second preliminary ejection), thereby suppressing ejection defects of the print head 15. When the front-to-back reversal operation shown in FIG. 16 is completed, the MPU 101 performs the recording operation on the second side (rear side) of the recording medium P in the processing from S204 onwards in the double-sided recording operation shown in FIG.

[0070] The double-sided recording operation shown in FIG. 15 is performed once for each recording medium P (front and back sides) in accordance with the progress of the document reading operation shown in FIG. 14. When the images of all documents R loaded on the reading feed section of the ADF scanner unit 54 have been read, the MPU 101 ends the document reading operation shown in FIG. 14. Thereafter, in the document reversal operation shown in FIG. 16, since the waiting time in S304 is eliminated, the MPU 101 omits the first preliminary ejection in S310 and does not change the ink discharge amount, thereby appropriately reducing the amount of waste ink. As described above, the MPU 101 executes the high-power-consumption process of S307 (the tilt correction operation for the recording medium P) while restricting the operation of the reading unit 52. When the MPU 101 starts exclusive control of the recording unit 51 after exclusive control of the reading unit 52 ends, it restores the ink ejection state from the recording head 15 by preliminary ejecting an appropriate amount of ink. Therefore, even if the power supply capacity of the recording device 1 is reduced, it is possible to recover the performance of the recording head 15 and suppress ejection defects of the recording head 15. When the MPU 101 has recorded the images of all of the originals R on the recording medium P, it ends the copying operation.

[0071] As described above, this embodiment makes it possible to suppress an increase in the amount of ink used in preliminary ejection. In this embodiment, when starting a predetermined operation (e.g., tilt correction operation) in a recording operation after waiting for a certain period of time for the document reading operation to stop, the MPU 101 changes the amount of ink discharged by a recovery operation that restores the ink ejection state from the print head 15. The recovery operation, for example, restores the ink ejection state by performing preliminary ejection of ink from the print head 15. The MPU 101 increases the amount of ink ejected from the print head 15 when performing preliminary ejection (for example, to the sum of the first ink amount and the second ink amount) as the time spent waiting for the document reading operation to stop (the aforementioned waiting time) increases. This allows the performance of the print head 15 to be restored by performing preliminary ejection of an appropriate amount of ink after starting the tilt correction operation (the predetermined operation), even if the time during which ink is not ejected from the print head 15 increases due to waiting for the document reading operation to stop. On the other hand, if the time (waiting time) for the document reading operation to stop is less than a certain time, the MPU 101 does not change the amount of ink discharged by the recovery operation. In this way, it is possible to suppress an increase in the amount of ink discharged by the preliminary ejection.

[0072] Another example of the predetermined operation is a tilt correction operation that corrects the tilt of the recording medium P that has been inverted during a (double-sided) recording operation. The MPU 101 controls the recording unit 51 to wait for the document reading operation to stop before starting the tilt correction operation, after inverting the recording medium P in the inversion path and stopping the double-sided recording operation midway. The MPU 101 performs exclusive control to restrict the document reading operation during the tilt correction operation (predetermined operation). This allows the tilt correction operation (processing of S307) of the recording medium P, which consumes a large amount of power during double-sided recording, to be performed while restricting the operation of the reading unit 52, thereby reducing the power capacity of the recording device 1.

[0073] <Modification> In the above-described embodiment, the MPU 101 increases the amount of ink ejected from the print head 15 when performing preliminary ejection as the waiting time (in other words, the time during which the double-sided printing operation is stopped) increases. However, this is not limiting. For example, the MPU 101 may increase the amount of ink ejected from the print head 15 when performing preliminary ejection as the time required for the operation by the printing unit 51 (the entire reverse-side printing operation), including the time required to wait for the document reading operation to stop, increases. In this case, the amount of ink ejected from the print head 15 when performing preliminary ejection can be more accurately reflected in the amount of ink ejected from the print head 15 when performing preliminary ejection. Furthermore, the MPU 101 is not limited to changing the amount of ink (the number of times ink is ejected), and may also change, for example, the cycle at which the print head 15 ejects ink when performing preliminary ejection. The MPU 101 may change the amount of ink ejected from the print head 15 when performing preliminary ejection without measuring the waiting time when waiting for the document reading operation to stop.

[0074] In the above embodiment, preliminary ejection of ink by the print head 15 is exemplified as an example of a recovery operation for recovering the ejection state of ink ejected from the print head 15, but the present invention is not limited to this. For example, ink may be sucked from the print head 15 by the suction pump 33 while the ejection surface 16 of the print head 15 is capped by the cap 32 of the recovery unit 31.

[0075] In the above-described embodiment, the MPU 101 performs exclusive control of the ADF scanner unit 54 during the document reading operation and performs exclusive control of the recording unit 51 during the tilt correction operation of the recording medium P in the front-back reversing operation, but this is not limiting. For example, the MPU 101 may perform exclusive control of the flatbed scanner unit 53 during the document reading operation by the flatbed scanner unit 53. The MPU 101 may perform exclusive control of the recording unit 51 during operations other than the tilt correction operation in the front-back reversing operation. Furthermore, not limited to copying operations, when a document reading operation and a double-sided recording operation are performed separately and in parallel, the MPU 101 may perform exclusive control of the ADF scanner unit 54 during the document reading operation and perform exclusive control of the recording unit 51 during the tilt correction operation of the recording medium P in the front-back reversing operation.

[0076] In the above-described embodiment, the MPU 101 performs exclusive control to restrict the document reading operation by the reading unit 52 during a double-sided recording operation that consumes a lot of power (a tilt correction operation during a front-to-back inversion operation), but this is not limited to this. For example, the MPU 101 may perform exclusive control to restrict the double-sided recording operation by the recording unit 51 during a document reading operation that consumes a lot of power. Furthermore, in addition to operations that consume a lot of power, the MPU 101 may perform exclusive control to restrict the document reading operation by the reading unit 52 during a double-sided recording operation that generates a lot of vibration, operating noise, etc. The MPU 101 may perform exclusive control to restrict the double-sided recording operation by the recording unit 51 during a document reading operation that generates a lot of vibration, operating noise, etc.

[0077] In the above embodiment, the print head 15 is a so-called serial print head that ejects ink while moving in the scanning direction, but is not limited to this. The print head may be a so-called full-line print head that is capable of ejecting ink across the entire width of the print medium P without moving in the scanning direction.

[0078] <<Other embodiments>> The disclosure of this embodiment includes configurations typified by the following recording apparatus examples.

[0079] <Configuration 1> a reading unit that reads an image of a document; a recording unit having a transport unit that transports a recording medium and a recording head that ejects ink onto the recording medium transported by the transport unit to record an image; a control unit that controls an original reading operation in which the reading unit reads an image of an original, and a recording operation in which the conveying unit conveys a recording medium and the recording head records an image; Equipped with The control unit changes the amount of ink discharged by a recovery operation that restores the ejection state of ink ejected from the recording head when it waits for the document reading operation to stop and then starts a predetermined operation in the recording operation.

[0080] <Configuration 2> The recording device according to configuration 1, wherein the control unit changes the amount of ink discharged by the recovery operation when starting the specified operation after waiting for a certain period of time or more for the document reading operation to stop, and does not change the amount of ink discharged by the recovery operation when the time spent waiting for the document reading operation to stop is less than the certain period of time.

[0081] <Configuration 3> 3. The recording apparatus according to claim 1, wherein the ejection state is restored by performing preliminary ejection of ink from the recording head.

[0082] <Configuration 4> 4. The recording apparatus according to configuration 3, wherein when changing the amount of ink discharged in the recovery operation, the control unit increases the amount of ink discharged from the recording head when the preliminary discharge is performed.

[0083] <Configuration 5> 5. The recording apparatus according to claim 4, wherein the control unit increases the amount of ink ejected from the recording head when performing the preliminary ejection as the time to wait for the document reading operation to stop increases.

[0084] <Configuration 6> The recording device according to configuration 4, wherein the control unit increases the amount of ink ejected from the recording head when performing the preliminary ejection in accordance with an increase in the time required for the operation by the recording unit, including the time required to wait for the document reading operation to stop.

[0085] <Configuration 7> 7. The recording apparatus according to any one of configurations 1 to 6, wherein the control unit performs exclusive control to restrict the document reading operation during the predetermined operation.

[0086] <Configuration 8> 8. The recording device according to any one of configurations 1 to 7, wherein the recording head ejects ink onto the recording medium transported by the transport unit to record an image of the document read by the reading unit.

[0087] <Configuration 9> the transport unit is capable of reversing the recording medium; 9. The recording apparatus according to any one of configurations 1 to 8, wherein the predetermined operation includes a tilt correction operation for correcting a tilt of the recording medium that has been turned over by the transport unit.

[0088] <Configuration 10> The recording device according to configuration 9, wherein the control unit changes the amount of ink discharged by the recovery operation when the recording operation is stopped midway by inverting the recording medium using the transport unit, and the control unit waits for the document reading operation to stop before starting the tilt correction operation. [Explanation of symbols]

[0089] 1. Recording device 12 Conveyor roller 15 Recording head 51 Recording Section 52 Reading unit 53 Flatbed scanner unit 54 ADF scanner section

Claims

1. a reading unit that reads an image of a document; a recording unit having a transport unit that transports a recording medium and a recording head that ejects ink onto the recording medium transported by the transport unit to record an image; a control unit that controls an original reading operation in which the reading unit reads an image of an original, and a recording operation in which the conveying unit conveys a recording medium and the recording head records an image; Equipped with The control unit changes the amount of ink discharged by a recovery operation that restores the ejection state of ink ejected from the recording head when it waits for the document reading operation to stop and then starts a predetermined operation in the recording operation.

2. 2. The recording device according to claim 1, wherein the control unit changes the amount of ink discharged by the recovery operation when starting the specified operation after waiting for a certain period of time or more for the document reading operation to stop, and does not change the amount of ink discharged by the recovery operation when the time spent waiting for the document reading operation to stop is less than the certain period of time.

3. 3. The recording apparatus according to claim 1, wherein the ejection state is restored by performing preliminary ejection of ink from the recording head.

4. 4. The printing apparatus according to claim 3, wherein when the amount of ink discharged in the recovery operation is changed, the control unit increases the amount of ink discharged from the print head when the preliminary discharge is performed.

5. 5. The recording apparatus according to claim 4, wherein the control unit increases the amount of ink ejected from the recording head when performing the preliminary ejection as the time to wait for the document reading operation to stop increases.

6. 5. The recording device according to claim 4, wherein the control unit increases the amount of ink ejected from the recording head when performing the preliminary ejection in accordance with an increase in the time required for the operation by the recording unit, including the time required to wait for the document reading operation to stop.

7. 3. The recording apparatus according to claim 1, wherein the control unit performs exclusive control to restrict the document reading operation during the predetermined operation.

8. 3. The recording apparatus according to claim 1, wherein the recording head ejects ink onto the recording medium transported by the transport unit to record the image of the document read by the reading unit.

9. the transport unit is capable of reversing the recording medium; 3. The recording apparatus according to claim 1, wherein the predetermined operation includes a tilt correction operation for correcting a tilt of the recording medium that has been turned over by the transport unit.

10. The recording device according to claim 9, wherein the control unit changes the amount of ink discharged by the recovery operation when the recording operation is stopped midway by inverting the recording medium using the transport unit, and the control unit waits for the document reading operation to stop before starting the tilt correction operation.

Images