JP2011051218A - Image recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means for highly accurately detecting a position of a tray through the use of a stepping motor and encoders, etc. <P>SOLUTION: A printer part 11 includes: a conveying path 23 configure to convey the tray 100; a recording part 25 for selectively ejecting ink droplets to a CD 111 supported on the tray 110; a conveying roller 41 and a pinch roller 42 for conveying the tray 110; the linear encoder 66 for detecting the position of the recording part 25 in the width direction 101; the rotary encoder 67 for detecting the driving amount of the conveying roller 41; and a control part 60 configured to convey the tray 110 based on the driving amount detected by the rotary encoder 67 as long as a distance corresponding to the target driving amount, then, stop the tray 110, and then, control the recording part 25 to selectively discharge the ink droplets while moving the recording part 25 in the width direction based on the position of the recording part 25 detected by the linear encoder 66. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image recording apparatus in which a tray that supports a recording member having a thin plate shape is conveyed.

  The image recording apparatus records an image by conveying a recording medium. An inkjet image recording apparatus can perform image recording on various recording media. Examples of the recording medium of the ink jet type image recording apparatus include a sheet such as a recording sheet and a thin plate-shaped member such as a CD or a DVD.

  A CD, DVD, or the like is placed on a tray or the like that matches a conveyance path corresponding to a standard recording sheet, and image recording is performed while being conveyed along the conveyance path. In such image recording, the tray is inserted into the conveyance path from the outside, such as the front side of the apparatus, and conveyed onto the platen. For example, when image recording is performed on a CD on a tray with no margin or with very little margin, the recording head is required to be accurately positioned with respect to the CD. Therefore, it is required that the position of the CD on the tray is accurately detected with respect to the recording head.

  In Patent Document 1, a detection means such as a reflecting surface that reflects light is provided at a predetermined position of a tray, and this detection means is detected by a detection means having a light emitting element and a light receiving element, and a CD or the like on the tray is detected. A configuration for determining the position is disclosed.

  Patent Document 2 discloses a configuration in which a marker for position detection that reflects light is provided at a predetermined position on a disc tray, the marker is detected by an optical sensor, and a printing start position is determined based on the detection result. Yes.

JP 2004-42372 A JP 2006-306062 A

  As disclosed in Patent Documents 1 and 2, in order to accurately detect the position of a CD or the like on the tray by detecting the marker or the like on the tray with an optical sensor, the position of the marker is along the upper surface of the tray. In addition, it is necessary to be detected with high accuracy in a two-dimensional direction. However, in order to increase the detection accuracy by the optical sensor to the required accuracy, an optical sensor that is more expensive than the optical sensor used for detecting a recording sheet or the like is required, which increases the cost of the apparatus.

  In addition to the configurations disclosed in Patent Documents 1 and 2, a method of directly detecting a CD or the like on a tray by an optical sensor is conceivable. Since the rates are different, it is difficult to realize stable and highly accurate position detection for various recording members.

  The present invention has been made in view of the above-described circumstances, and its purpose is to utilize a detection means such as a stepping motor inherent in an image recording apparatus or an encoder possessed for other purposes, An object of the present invention is to provide means capable of detecting the position of a tray with high accuracy.

  (1) An image recording apparatus according to the present invention is provided in a tray having a fixing portion for fixing a thin plate-shaped recording member, a transport path for transporting the tray, and the transport path. A recording unit that selectively ejects ink droplets onto a recording medium supported by the tray while being moved in a second direction that intersects the first direction that is conveyed, and a position that faces the recording unit. A transport unit that transports the tray; and a control unit that transports the tray by a distance corresponding to a target drive amount, stops the tray, and selectively ejects ink droplets while moving the recording unit in the second direction. To do.

  The tray is provided at a fixed position in the first direction with respect to the fixed portion, and a first reference portion that can contact the recording portion in the first direction, and a fixed value in the second direction with respect to the fixed portion. And a second reference portion that can come into contact with the recording portion in the second direction.

  The control unit moves the recording unit to a position where the recording unit can come into contact with the first reference unit, causes the transport unit to transport the tray, and the first unit when the recording unit comes into contact with the first reference unit. The position in the direction is the first origin position, the tray is transported to the transport means to a position where the recording section can come into contact with the second reference section, the tray is stopped, and the recording section is moved in the second direction. Then, the position in the second direction when the recording unit is in contact with the second reference unit is set as the second origin position, and the recording medium member is arranged on the basis of the first origin position and the second origin position. On the other hand, the recording unit determines a recording start position at which image recording starts.

  (2) The image recording apparatus may further include a position detection unit that detects a position of the recording unit in the second direction and a drive amount detection unit that detects a drive amount of the transport unit. Good.

  The control unit stops the tray by transporting the tray by a distance corresponding to the target drive amount based on the drive amount detected by the drive amount detection unit, and stops at the position of the recording unit detected by the position detection unit. Based on this, ink droplets are selectively ejected while moving the recording unit in the second direction. Further, the control means sets the position when it is determined that the tray is stopped based on the drive amount detected by the drive amount detection means as the first origin position, and is set to the position detected by the position detection means. Based on this, the position when it is determined that the recording unit has stopped is set as the second origin position.

  (3) An image recording apparatus according to the present invention is provided in a tray having a fixing portion for fixing a thin plate-shaped recording member, a transport path for transporting the tray, and the transport path. A recording unit that selectively ejects ink droplets onto a recording medium supported by the tray while being moved in a second direction that intersects the first direction that is conveyed, and a position that faces the recording unit. Conveying means for conveying the tray, a guide member that is provided in the conveying path and extends along the first direction, and slides on the tray that is conveyed along the conveying path, and a target driving amount for the tray. And a control means for selectively discharging ink droplets while moving the recording unit in the second direction.

  The tray includes a first reference portion that is provided at a fixed position in the first direction with respect to the fixed portion, and that can come into contact with the recording portion in the first direction.

  The control unit moves the recording unit to a position where the recording unit can come into contact with the first reference unit, causes the transport unit to transport the tray, and the first unit when the recording unit comes into contact with the first reference unit. Recording in which the recording unit starts image recording with respect to the recording medium member based on the first origin position and the second origin position in the second direction obtained in advance as the first origin position. Determine the starting position.

  (4) The image recording apparatus may further include a drive amount detection unit that detects a drive amount of the transport unit.

  The control unit stops the tray by transporting the tray by a distance corresponding to the target drive amount based on the drive amount detected by the drive amount detection unit, and moves the recording unit in the second direction to drop ink droplets. Selectively discharge. Further, the control means sets the position when it is determined that the tray has stopped based on the drive amount detected by the drive amount detection means as the first origin position.

  (5) An image recording apparatus according to the present invention is provided in a tray having a fixing portion for fixing a thin plate-shaped recording member, a transport path for transporting the tray, and the transport path. A recording unit that selectively ejects ink droplets onto a recording medium supported by the tray while being moved in a second direction that intersects the first direction that is conveyed, and a position that faces the recording unit. A conveying unit that conveys the tray, and a positioning member that is provided in the conveying path, and that abuts against a leading end of the tray that is conveyed along the conveying path in a state where the recording member does not face the recording head. And a control means for selectively discharging ink droplets while stopping the tray at a position facing the recording unit and moving the recording unit in the second direction.

  The tray includes a second reference portion that is provided at a fixed position in the second direction with respect to the fixed portion, and that can come into contact with the recording portion in the second direction.

  The control means causes the transport means to transport the tray toward the positioning member, sets a position in the first direction when the tray contacts the positioning member as a first origin position, and sets the tray to the recording position. The tray is stopped by transporting it to the position where the section can come into contact with the second reference section, the tray is stopped, the recording section is moved in the second direction, and the recording section comes into contact with the second reference section. A recording start position at which the recording unit starts image recording with respect to the recording medium member based on the first origin position and the second origin position, with the position in the second direction at this time being the second origin position. To decide.

  (6) The image recording apparatus may further include a driving amount detecting unit that detects a driving amount of the conveying unit, and a position detecting unit that detects a position of the recording unit in the second direction. Good.

  The control unit stops the tray by transporting the tray by a distance corresponding to the target drive amount based on the drive amount detected by the drive amount detection unit, and stops at the position of the recording unit detected by the position detection unit. Based on this, ink droplets are selectively ejected while moving the recording unit in the second direction. Further, the control means sets the position when it is determined that the tray is stopped based on the drive amount detected by the drive amount detection means as a first origin position, and based on the position detected by the position detection means. The position when it is determined that the recording unit has stopped is set as the second origin position.

  (7) The image recording apparatus further includes a guide member that is provided in the conveyance path and extends in the first direction, and on which a tray that is conveyed along the conveyance path is slid. May be.

  The control means contacts the second reference portion while moving the recording portion in a direction approaching the guide member.

  This prevents the tray from moving in the second direction even when the recording unit contacts the second reference unit.

  (8) In the image recording apparatus, the control unit acquires the first origin position while transporting the tray in the first direction of the first direction by the transport unit, and acquires the first origin position. In a state where the tray is positioned on the second direction side in the first direction from the position, the ink droplets are selected while the tray is stopped at a position facing the recording unit and the recording unit is moved in the second direction. In other words, it may be discharged.

  According to the present invention, the structure inherent in the image recording apparatus, such as a stepping motor used as a driving source, a driving amount detecting unit for detecting the driving amount of the conveying unit, and a position detecting unit for detecting the position of the recording unit, is provided. In addition, since the position of the tray can be detected with high accuracy by using detection means such as an encoder for other purposes, the recording medium supported by the tray without significantly increasing the apparatus cost. In contrast, highly accurate image recording can be performed.

1 is an external perspective view of a multifunction machine 10 according to a first embodiment of the present invention. 2 is a longitudinal sectional view showing an internal configuration of a printer unit 11. FIG. 3 is a schematic diagram illustrating a state of the printer unit 11 when an image is recorded on a CD 111 on a tray 110. FIG. 3 is a block diagram illustrating a configuration of a control unit 60. FIG. 4 is a flowchart showing an operation of recording an image on a CD 111 on a tray 110. 3 is a schematic diagram illustrating a state of the printer unit 11 when an image is recorded on a CD 111 on a tray 110. FIG. 3 is a schematic diagram illustrating a state of the printer unit 11 when an image is recorded on a CD 111 on a tray 110. FIG. FIG. 10 is a schematic diagram illustrating a state of the printer unit 11 when image recording is performed on a CD 111 on a tray 110 in the second embodiment. 10 is a flowchart illustrating an operation of recording an image on a CD 111 on a tray 110 in the second embodiment. FIG. 10 is a schematic diagram illustrating a state of the printer unit 11 when image recording is performed on a CD 111 on a tray 110 in the third embodiment. 10 is a flowchart illustrating an operation of recording an image on a CD 111 on a tray 110 in the third embodiment.

[First Embodiment]
Hereinafter, preferred embodiments of the present invention will be described with appropriate reference to the drawings. Note that the embodiment described below is merely one embodiment of the present invention, and it is needless to say that the embodiment is appropriately changed without departing from the gist of the present invention.

[Schematic configuration of MFP 10]
As shown in FIG. 1, the multifunction machine 10 includes a printer unit 11 provided in the lower part, a scanner part 12 provided in the upper part, and an operation panel 14 provided in the upper part of the front. In the present embodiment, the direction indicated by the arrow 101 is the width direction of the multifunction device 10, the direction indicated by the arrow 102 is the height direction of the multifunction device 10, and the direction indicated by the arrow 103 is the multifunction device. 10 depth directions. Further, FIG. 1 shows the multifunction machine 10 in a state where the tray 110 is inserted, and the paper feed cassette 20 is not inserted into the in-body space 15.

  The multifunction machine 10 has various functions such as a print function, a scan function, a facsimile function, and a copy function. The print function is exhibited by the printer unit 11. The printer unit 11 performs image recording by an ink jet method. It should be noted that functions other than the print function in the multifunction device 10 are arbitrary. For example, the image recording apparatus of the present invention may be implemented as a printer having only a print function that does not have a scan function, a copy function, or a facsimile function.

  An opening 13 is formed in the side wall 18 on the front side of the apparatus housing 40 of the printer unit 11. The inside of the opening 13 is a cylinder space 15 of the printer unit 11. The in-body space 15 is a rectangular parallelepiped space having an opening 13 on the front side of the apparatus and extending from the opening 13 to the back side of the apparatus. In the in-body space 15, a pair of inner walls 16 (see FIG. 2) are opposed to each other in the width direction 101. By inserting and removing the paper feed cassette 20 between the pair of inner walls 16, the paper feed cassette 20 is detachably provided in the in-body space 15. Although the detailed configuration of the paper feed cassette 20 will be described later, the recording paper loaded in the paper feed cassette 20 is transported through the printer unit 11 by transport means described later. In this conveyance process, image recording is performed on the recording paper.

  Although the scanner unit 12 is configured as a so-called flatbed scanner, the configuration of the scanner unit 12 is not directly related to the present invention, and thus detailed description thereof is omitted here.

  The operation panel 14 is for operating the printer unit 11 and the scanner unit 12 and includes various operation buttons and a liquid crystal display unit. The user can set various functions and perform operations by operating the operation panel 14.

[Internal configuration of printer unit 11]
As shown in FIG. 2, the printer unit 11 includes a transport path 23 on which the recording paper fed from the paper feed cassette 20 or the tray 110 on which the CD 111 is placed, and a recording provided on the transport path 23. Part 25.

  The printer unit 11 according to the present embodiment is characterized in that when the tray 110 on which the CD 111 is placed is inserted into the transport path 23, the origin position of the tray 110 is acquired and based on the origin position. The image recording is performed on the CD 111. The CD 111 is an example of a recording member in the present invention.

[Paper cassette 20]
As shown in FIG. 2, the paper feed cassette 20 is provided so as to be inserted into and removed from the in-body space 15 through the opening 13 of the printer unit 11. The paper feed cassette 20 has a rectangular box shape with a part of the upper surface opened. A plurality of recording sheets are stacked in the internal space 21 of the sheet feeding cassette 20. The recording paper loaded in the paper feed cassette 20 is fed to the transport path 23 by the paper feed roller 30. The paper discharge tray 22 is configured as a part of the upper surface of the paper feed cassette 20. The recording paper discharged from the conveyance path 23 is stacked on the paper discharge tray 22.

[Conveyance path 23]
As shown in FIG. 2, the conveyance path 23 includes a curved portion 32 that is guided by bending the recording sheet, and a linear portion 33 that is guided by extending the recording sheet. The curved portion 32 is curved toward the front side of the apparatus (the right side in FIG. 2) while extending upward from the back side of the paper feed cassette 20. The straight line portion 33 extends linearly from the curved portion 32 toward the front side of the apparatus to the vicinity of the paper discharge tray 22. The recording paper is sequentially conveyed from the paper feed cassette 20 to the curved portion 32 and the straight portion 33. That is, the curved portion 32 and the linear portion 33 are sequentially arranged in order along the direction in which the recording paper is conveyed. By the curved portion 32 and the straight portion 33, the conveyance path 23 forms a so-called U-turn path.

  The curved portion 32 is defined by an outer guide surface and an inner guide surface. The outer guide surface is constituted by a guide member 28. The guide member 28 is supported by a lid 19 provided on the back side of the apparatus and is rotated together with the lid 19. The inner guide surface is constituted by a guide member 29. The guide member 29 is supported by a frame (not shown).

  The lid 19 is provided in the vicinity of the lower end of the lid 19 so as to be rotatable by a shaft protruding in the width direction 102, and as indicated by an arrow 104, the upper end side is rotated and opened to the outside of the apparatus. The lid 19 is closed when the recording paper is conveyed (see FIG. 2), and is opened when the tray 110 is conveyed. When the lid 19 is opened, the side wall on the back side of the apparatus is opened. Further, the guide member 28 is rotated together with the lid 19 to open the bending portion 32. As a result, a straight conveyance path, that is, a straight path, is formed from the straight portion 33 to the back side of the apparatus. The tray 110 is conveyed along this straight path. The direction indicated by the arrow 105 is the transport direction of the tray 110 and corresponds to the first direction in the present invention.

[Conveying means]
As shown in FIG. 2, the paper feed roller 30 is rotatably supported at the tip of the arm 31. The paper feed roller 30 enters the internal space 21 of the paper feed cassette 20 by the rotation of the arm 31 and comes into contact with the uppermost recording paper loaded in the internal space 21. The paper feed roller 30 is rotated by driving transmission from the ASF motor 73 (see FIG. 4). When the paper feeding roller 30 is rotated in a state where the paper feeding roller 30 is pressed against the recording paper of the paper feeding cassette 20, the uppermost recording paper is fed to the conveyance path 23 by the frictional force with the paper feeding roller 30. Is done.

  A conveyance roller 41 and a pinch roller 42 are provided on the straight line portion 33 of the conveyance path 23. The conveyance roller 41 and the pinch roller 42 are disposed upstream of the recording unit 25 in the recording sheet conveyance direction. The conveyance roller 41 and the pinch roller 42 make a pair. The pinch roller 42 can be brought into contact with and separated from the transport roller 41 and is biased by a spring so as to come into pressure contact with the transport roller 41. The conveyance roller 41 is rotated by driving transmission from the LF motor 69 (see FIG. 4). The recording sheet sandwiched between the transport roller 41 and the pinch roller 42 is transported toward the recording unit 25 under the rotation of the transport roller 41.

  A discharge roller 43 and a spur 44 are provided on the straight line portion 33 of the transport path 23. The paper discharge roller 43 and the spur 44 are disposed on the downstream side of the recording unit 25 in the recording sheet conveyance direction. The paper discharge roller 43 and the spur 44 are paired. The spur 44 can be brought into and out of contact with the paper discharge roller 43 and is spring-biased so as to come into pressure contact with the paper discharge roller 43. The paper discharge roller 43 is rotated by driving transmission from the LF motor 69. The rotation of the paper discharge roller 43 is synchronized with the rotation of the transport roller 41. The recording paper sandwiched between the paper discharge roller 43 and the spur 44 is conveyed toward the paper discharge tray 22 under the rotation of the paper discharge roller 43.

  The transport roller 41 and pinch roller 42, the discharge roller 43 and the spur 44 described above correspond to the transport means in the present invention.

[Recording unit 25]
As shown in FIG. 2, the recording unit 25 is disposed on the linear portion 33 of the transport path 23 and includes a carriage 46 and a platen 47. The carriage 46 is disposed on the upper side of the platen 47 with the linear portion 33 interposed therebetween. A recording head 48 is mounted on the carriage 46. Although not shown in the figure, the recording head 48 has a nozzle for ejecting ink droplets. The recording head 48 is mounted on the carriage 46 with the nozzle opening exposed to the platen 47 side.

  The carriage 46 is driven and transmitted from the CR motor 71 (see FIG. 4) and reciprocates in the width direction 101 (direction perpendicular to the paper surface in FIG. 2) together with the recording head 48. The carriage 46 does not move in the depth direction 103 by being engaged with a guide rail (not shown) extending in the width direction 101. Further, the carriage 46 has one end in the movement range as a home position (HP) (the right end in FIG. 3).

  While the carriage 46 is moved in the width direction 101, minute ink droplets are selectively ejected from the recording head 48 toward the recording paper on the platen 47 or the CD 111. As the ejected ink droplets land on the recording paper or CD 111, an image is recorded on the recording paper or CD 111. Ink is supplied to the recording head 48 from an ink cartridge (not shown). The width direction 101 in which the carriage 46 moves corresponds to the second direction in the present invention.

[Guide member 49]
As shown in FIG. 3, a guide member 49 extending along the transport direction 105 of the tray 110 is provided between the transport roller 41 and the paper discharge roller 43. The guide member 49 is erected from the upper surface of the platen 47 and protrudes from the upper surface to the thickness of the tray 110. The side wall 50 of the guide member 49 is a flat surface that extends along the transport direction 105, and the tray 110 that is transported through the straight portion 33 of the transport path 23 is slid on the side wall 50 of the guide member 49. The The guide member 49 is disposed on the side opposite to the home position with respect to the tray 110 in the width direction 101. The guide member 49 may be disposed on the opposite side or the same side as the home position as long as the guide member 49 is disposed on the same side as the side where the second reference portion 116 described later is provided.

[Encoder disk 51, optical sensor 52]
As shown in FIG. 3, an encoder disk 51 is provided on the shaft 45 of the transport roller 41. The encoder disk 51 has a transparent disk shape, and marks that block light are written at a predetermined pitch in the circumferential direction. The encoder disk 51 is fixed to the shaft 45 of the transport roller 41 and rotates together with the transport roller 41. The optical sensor 52 is configured such that a light emitting element and a light receiving element are opposed to each other with a predetermined interval in the width direction 101.

  The optical sensor 52 is provided so that the peripheral edge of the encoder disk 51 is located in the space between the light emitting element and the light receiving element. When light is received by the light receiving element of the optical sensor 52, an electrical signal having a level corresponding to the luminance of the received light is generated by the optical sensor 52. In the state where the mark is located between the light emitting element and the light receiving element, an electrical signal of LOW level is generated. In the state where the mark is not located between the light emitting element and the light receiving element, an HI level electric signal is generated. That is, a pulse signal is generated each time a mark on the encoder disk 51 is detected by the optical sensor 52. This pulse signal is output to the control unit 100. The encoder disk 51 and the optical sensor 52 implement the drive amount detection means in the present invention.

[Encoder strip 55, optical sensor 56]
As shown in FIG. 3, an encoder strip 55 is provided over the moving range in the width direction 101 of the carriage 46. The encoder strip 55 is in the form of a strip made of a transparent resin. The encoder strip 55 has a pattern in which light blocking portions that block light and light transmitting portions that transmit light are alternately arranged at equal pitches. An optical sensor 56 for detecting the pattern of the encoder strip 55 is mounted on the carriage 46.

  In the optical sensor 56, a light emitting element and a light receiving element are arranged to face each other at a predetermined interval in the depth direction 103. The optical sensor 56 is provided so that the encoder strip 55 is positioned in a space between the light emitting element and the light receiving element. When light is received by the light receiving element of the optical sensor 56, an electrical signal having a level corresponding to the luminance of the received light is generated by the optical sensor 56. In the state where the mark is located between the light emitting element and the light receiving element, an electrical signal of LOW level is generated. In the state where the mark is not located between the light emitting element and the light receiving element, an HI level electric signal is generated. That is, a pulse signal is generated every time the mark on the encoder strip 55 is detected by the optical sensor 56. This pulse signal is output to the control unit 100.

[Control unit 60]
As shown in FIG. 4, the control unit 60 controls the overall operation of the multifunction machine 10 as well as the printer unit 11. The control unit 60 is configured as a microcomputer mainly including a CPU 61, ROM 62, RAM 63, EEPROM 64, and ASIC (Application Specific Integrated Circuit) 65. The control unit 60 corresponds to the control means in the present invention. In FIG. 4, the transmission path of the driving force from each motor 69, 71, 73 is indicated by a broken line.

  The ROM 62 stores a program for the CPU 61 to control the motors 69, 71, 73 and the multifunction machine 10. The RAM 63 is used as a storage area for temporarily storing various data used when the CPU 61 executes the program, or as a work area for data processing. The EEPROM 64 stores settings, flags, and the like that should be retained even after the power is turned off.

  Drive circuits 68, 70, 72, a linear encoder 66, and a rotary encoder 67 are connected to the ASIC 65. The control unit 60 is connected to the scanner unit 12, the operation panel 14, and the like, but since these are not directly related to the gist of the present invention, the description is omitted here.

  The drive circuit 68 drives the LF motor 69. The shaft 45 of the transport roller 41 and the shaft of the paper discharge roller 43 are connected to the LF motor 69 via a transmission gear or the like. The drive circuit 68 receives the output signal from the ASIC 65 and drives the LF motor 69. The driving force of the LF motor 69 is transmitted to the shaft 45 and the like, and the transport roller 40 and the paper discharge roller 43 rotate in synchronization. The tray 110 inserted in the transport path 23 is transported along the transport path 23 in response to the rotational force of the transport roller 41 or the paper discharge roller 43.

  The drive circuit 70 receives the output signal from the ASIC 65 and drives the CR motor 71. The driving force of the CR motor 71 is transmitted to the carriage 41 via a belt driving mechanism or the like. As a result, the carriage 41 moves in the width direction 101.

  The drive circuit 72 drives the ASF motor 73. The ASF motor 73 is connected to the paper feed roller 30 via a drive transmission mechanism (not shown). The drive circuit 72 receives the output signal from the ASIC 65 and rotates the ASF motor 73. Then, the drive transmission mechanism transmits the driving force of the ASF motor 73 to the paper feed roller 30.

  The linear encoder 66 detects the pattern of the encoder strip 51 by the optical sensor 52 mounted on the carriage 41 and outputs a pulse signal. The control unit 60 determines the speed and position of the carriage 41 based on the output pulse signal, and controls the driving of the CR motor 71.

  The rotary encoder 67 detects the mark on the encoder disk 71 with the optical sensor 55 and outputs a pulse signal. The controller 60 determines the amount of rotation of the transport roller 41 based on the output pulse signal, and controls the driving of the LF motor 69.

[Tray 110]
As shown in FIG. 1, the tray 110 is a flat plate larger than the CD 111, and a concave portion 112 on which the tray 110 is placed is formed on the upper surface. At the center of the concave portion 112, a convex portion 113 into which a hole formed at the center of the CD 111 is fitted is formed. The CD 111 is fixed to the tray 110 by fitting the hole at the center of the CD 111 into the convex portion 113 of the concave portion 112. In this fixed state, the printing area of the CD 111 is exposed on the upper surface side. The convex portion 113 of the concave portion 112 corresponds to the fixed portion in the present invention.

  Assuming that the side inserted into the opening 13 in the tray 110 is the front end side and the opposite side is the rear end side, a first reference portion 115 and a second reference portion 116 are provided at one side end portion on the rear end side. . The first reference portion 115 is a wall that rises from the upper surface of the tray 110 along the rear end of the tray 110, and a wall surface on the side on which the CD 111 is placed extends along the width direction 101. The second reference portion 116 is a wall that rises from the top surface of the tray 110 along the side edge of the tray 110, and is a plane that extends along the depth direction 103 on the wall surface on which the CD 111 is placed. In the present embodiment, the first reference portion 115 and the second reference portion 116 are continuously realized in an L shape at one corner of the rear end of the tray 110. In the present invention, however, the first reference portion 115 and the second reference unit 116 are not necessarily realized continuously, and each may be provided independently.

  In the tray 110, the distance from the edge on the rear end side of the CD 111 placed on the concave portion 112 described above to the wall surface of the first reference portion 115 is the depth dimension (depth direction) of the recording head 48 mounted on the carriage 46. Longer than dimension 103).

[Image recording on CD 111 placed on tray 110]
Hereinafter, image recording on the CD 111 will be described with reference to FIGS. The printer unit 11 can perform image recording on the recording paper loaded in the paper feed cassette 20, but since this recording operation is the same as the conventional one, detailed description thereof is omitted here. The

  As shown in FIG. 1, the CD 111 is placed on the tray 110 in advance. When image recording is performed on the CD 111, the lid 19 is opened. When the lid 19 is opened, the guide member 28 fixed to the lid 19 is similarly opened. Thereby, in the curved part 32 of the conveyance path 23, the outer guide member 28 is separated from the inner guide member 29, and the curved part 32 is opened.

  The user instructs the operation panel 14 or a printer driver such as a computer connected to the multifunction machine 10 to start printing on the CD 111. Upon receiving this command, the control unit 60 drives the CR motor 71 to move the carriage 46 to a position corresponding to the first reference unit 115 of the tray 110 as shown in FIG. 3 (S11). This position is a position where the first reference portion 115 and the carriage 46 overlap in the width direction 101.

  The user inserts the tray 110 on which the CD 111 is placed into the in-body space 15 from the opening 13 while being approximately aligned with the height position of the linear portion 33 of the transport path 23. Both ends of the tray 110 in the width direction 101 of the tray 110 inserted into the in-body space 15 are supported by the height guides that are guided by the tray guide 17 and coincide with the straight portion 33 of the transport path 23. When the tray 110 is further inserted, the leading end is inserted into the linear portion 33 of the transport path 23 (S12).

  In response to the print start command, the control unit 60 rotates the LF motor 69 at a predetermined timing (S13). The conveyance roller 41 and the paper discharge roller 43 are rotated by the rotation of the LF motor 69. Since the tray 110 is inserted from the opening 13 on the front side of the apparatus into the linear portion 33 of the conveyance path 23, the rotation direction of the conveyance roller 41 and the discharge roller 43 is opposite to the direction in which the recording paper is conveyed. The direction. That is, the LF motor 69 is reversed. The tray 110 inserted into the straight line portion 33 of the transport path 23 is sandwiched between the paper discharge roller 43 and the spur 44 and transported onto the platen 47, and is then sandwiched between the transport roller 41 and the pinch roller 42 to the front side of the apparatus To the back side (upper side in FIG. 3). The direction in which the tray 110 is inserted from the opening 13 on the front side of the apparatus into the linear portion 33 of the transport path 23, that is, the direction from the front side to the back side of the multifunction machine 10 corresponds to the first direction in the present invention.

  After reversing the LF motor 69, the controller 60 monitors whether the LF motor 69 has stopped (S14). Specifically, the control unit 60 monitors whether the rotation of the shaft 45 of the transport roller 41 has stopped while counting the encoder amount of the rotary encoder 67. If the shaft 45 of the transport roller 41 stops, the control unit 60 determines that the LF motor 69 has stopped (S14: YES). If the shaft 45 of the transport roller 41 is rotating, the control unit 60 determines that the LF motor 69 is rotating (S14: NO), and continues the reverse rotation of the LF motor 69.

  As described above, since the carriage 46 has been moved to a position corresponding to the first reference portion 115 of the tray 110, when the tray 110 is transported to the rear side of the apparatus, as shown in FIG. The first reference portion 115 contacts the carriage 46. As a result, the tray 110 cannot be further conveyed to the back side of the apparatus, and the tray 110 stops. The stopped tray 110 stops the rotation of the transport roller 41 and the paper discharge roller 43, and the rotation of the LF motor 69 is stopped (S14: YES). When the tray 110 is conveyed until the first reference portion 115 comes into contact with the carriage 46, the CD 111 passes immediately below the recording head 48 mounted on the carriage 46. And the control part 60 determines the position which the tray 110 stopped as a 1st origin position (S15).

  Further, when the LF motor 69 stops, the control unit 60 causes the LF motor 69 to rotate a little forward and then stop (S16). By the normal rotation of the LF motor 69, the transport roller 41 and the paper discharge roller 43 rotate, and the tray 110 is slightly returned to the opening 13 side on the front side of the apparatus as shown in FIG. The first reference portion 115 is separated from the carriage 46.

  Next, the controller 60 drives the CR motor 71 to move the carriage 46 toward the guide member 49 (S17). At this time, the tray 110 is stopped, and the carriage 46 overlaps the second reference portion 116 in the depth direction 103 when the tray 110 is stopped.

  After driving the CR motor 71, the control unit 60 monitors whether the CR motor 71 has stopped (S18). Specifically, the control unit 60 monitors whether the carriage 46 has stopped while counting the encoder amount of the linear encoder 66. If the carriage 46 stops, the control unit 60 determines that the CR motor 71 has stopped (S18: YES). If the carriage 46 is moving, the control unit 60 determines that the CR motor 71 is driven (S18: NO), and continues driving the CR motor 71.

  As described above, since the carriage 46 is positioned so as to overlap with the second reference portion 116 of the tray 110, in the process in which the carriage 46 moves toward the guide member 49, as shown in FIG. 2 The reference portion 116 contacts the carriage 46. As a result, the carriage 46 cannot be moved further to the guide member 49 side, and the carriage 46 stops. The rotation of the CR motor 71 is stopped by the stopped carriage 46 (S18: YES). Although the tray 110 receives a force in the width direction 101 due to the contact of the carriage 46, the tray 110 does not move in the width direction 101 by this force when the tray 110 is in sliding contact with the guide member 49. . Then, the control unit 60 determines the position where the carriage 46 is stopped as the second origin position (S19).

  Further, when the CR motor 71 stops, the control unit 60 drives the CR motor 71 slightly to move the carriage 46 to the home position side (S20). As a result, the carriage 46 is separated from the second reference portion 116 as shown in FIG.

  Next, the control unit 60 obtains a print start position for starting image recording on the CD 111 based on the first origin position and the second origin position (S21). The print start position is obtained as a position where the LF motor 69 is rotated by a predetermined encoder amount from the first origin position and a position where the carriage 46 is moved by a predetermined encoder amount from the second origin position.

  Then, the control unit 60 rotates the LF motor 69 in the reverse direction or the normal direction to convey the tray 110 to the print start position. After transporting the tray 110 to the printing start position, the control unit 60 rotates the LF motor 69 forward based on the first origin position. Thereby, the tray 110 is conveyed from the apparatus back side to the apparatus front side (lower side in FIG. 3). When the print area of the CD 111 placed on the tray 110 is transported directly below the recording head 48, the control unit 60 rotates the transport roller 41 intermittently. In this intermittent conveyance, the tray 110 is conveyed by a distance corresponding to a predetermined target drive amount based on the rotation of the conveyance roller 41 and stopped. The direction in which the tray 110 is conveyed from the back side of the apparatus to the front side of the apparatus corresponds to the second direction in the present invention.

  The controller 60 drives the CR motor 71 based on the second origin position while the tray 110 is stopped. Accordingly, the carriage 46 is reciprocated in the width direction 101, and ink droplets are selectively ejected from the recording head 48 to the print area of the CD 111 on the tray 110 during the reciprocation. By repeating such intermittent rotation of the conveying roller 41 and reciprocating movement of the carriage 46, a desired image is recorded in the print area of the CD 111. The CD 111 on which image recording has been performed is ejected to the front side of the apparatus while being placed on the tray 110 and is again supported by the tray guide 17.

[Operational effects of this embodiment]
As described above, like the rotary encoder 67 that detects the rotation amount of the transport roller 41 and the linear encoder 66 that detects the position of the carriage 46, the printer unit 11 is provided for the purpose of recording an image on a recording sheet. Since the position of the tray 110 can be detected with high accuracy by using a device, high-precision image recording can be performed on the CD 111 supported by the tray 110 without significantly increasing the apparatus cost. .

  Further, the guide member 49 that is in sliding contact with the tray 110 prevents the tray 110 from moving in the width direction 101 even when the carriage 46 contacts the second reference portion 116 of the tray 110.

[Modification]
In the present embodiment, the embodiment in which the rotation of the LF motor 69 and the CR motor 71 is grasped by the rotary encoder 67 or the linear encoder 66 has been described. However, if the LF motor 69 or the CR motor 71 is a stepping motor, Even if the multifunction machine 10 does not include the linear encoder 66 or the rotary encoder 89, the control unit 60 can determine the first origin position and the second origin position and calculate the print start position.

  Specifically, after the control unit 60 drives the CR motor 71 and moves the carriage 46 to a position corresponding to the first reference unit 115 of the tray 110 in the same manner as in Step 11 (S11) described above. The LF motor 69 is reversely rotated by a predetermined drive amount. The driving amount of the LF motor 69 is set in advance as a pulse count amount sufficient for the carriage 46 to come into contact with the first reference portion 115 of the tray 110 when the tray 110 is transported in the direction opposite to the recording paper transport direction. ing. That is, the control unit 60 inputs a pulse count amount sufficient for the carriage 46 to contact the first reference unit 115 of the tray 110 to the LF motor 69 that is a stepping motor.

  The first reference portion 115 of the tray 110 contacts the carriage 46 by the reverse rotation of the LF motor 69 described above. As a result, the tray 110 cannot be further conveyed to the back side of the apparatus, and the tray 110 stops. The LF motor 69 is given a pulse count amount sufficient for further rotation. However, the LF motor 69 is stepped out and stopped when the tray 110 is stopped. The controller 60 determines the position in the transport direction of the tray 110 after transmitting all the predetermined pulse count amounts to the LF motor 69 as the first origin position.

  Next, the control unit 60 drives the CR motor 71 by a predetermined drive amount to move the carriage 46 to the guide member 49 side in the same manner as in step 17 (S17). The drive amount of the CR motor 71 is set in advance as a pulse count amount sufficient for the carriage 46 to come into contact with the second reference portion 116 of the tray 110 when the carriage 46 is moved from the home position. That is, the control unit 60 inputs a pulse count amount sufficient for the carriage 46 to come into contact with the second reference unit 116 of the tray 110 to the CR motor 71 that is a stepping motor.

  Since the carriage 46 is positioned so as to overlap the second reference portion 116 of the tray 110, the second reference portion 116 contacts the carriage 46 in the process in which the carriage 46 moves toward the guide member 49. As a result, the carriage 46 cannot be moved further to the guide member 49 side, and the carriage 46 stops. The CR motor 71 is given a pulse count amount sufficient for further rotation, but the CR motor 71 is stepped out and stopped when the carriage 46 is stopped. The controller 60 determines the position of the carriage 46 after transmitting all the predetermined pulse count amounts to the CR motor 71 as the second origin position.

  Then, the control unit 60 calculates a print start position based on the determined first origin position and second origin position. The print start position is obtained as a position where the LF motor 69 is rotated by a predetermined pulse count amount from the first origin position and a position where the carriage 46 is moved by a predetermined pulse count amount from the second origin position.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described. As shown in FIG. 8, in the second embodiment, the first reference portion 115 is provided on the tray 110 in the first embodiment, but the second reference portion 116 is not provided. Different from one embodiment. Since other than that is the same as that of the said 1st Embodiment, detailed description about each structure is abbreviate | omitted.

[Image recording on CD 111 placed on tray 110]
Hereinafter, image recording on the CD 111 in the second embodiment will be described with reference to FIGS. Upon receiving the print command, the control unit 60 drives the CR motor 71 to move the carriage 46 to a position corresponding to the first reference unit 115 of the tray 110 as shown in FIG. 8 (S31). This position is a position where the first reference portion 115 and the carriage 46 overlap in the width direction 101.

  The user inserts the tray 110 on which the CD 111 is placed into the in-body space 15 from the opening 13 while being approximately aligned with the height position of the linear portion 33 of the transport path 23. Both ends of the tray 110 in the width direction 101 of the tray 110 inserted into the in-body space 15 are supported by the height guides that are guided by the tray guide 17 and coincide with the straight portion 33 of the transport path 23. When the tray 110 is further inserted, the leading end thereof is inserted into the linear portion 33 of the transport path 23 (S32).

  In response to the print start command, the control unit 60 rotates the LF motor 69 at a predetermined timing (S33). The conveyance roller 41 and the paper discharge roller 43 are rotated by the rotation of the LF motor 69. Since the tray 110 is inserted from the opening 13 on the front side of the apparatus into the linear portion 33 of the conveyance path 23, the rotation direction of the conveyance roller 41 and the discharge roller 43 is opposite to the direction in which the recording paper is conveyed. The direction. That is, the LF motor 69 is reversed. The tray 110 inserted into the straight line portion 33 of the transport path 23 is sandwiched between the paper discharge roller 43 and the spur 44 and transported onto the platen 47, and is then sandwiched between the transport roller 41 and the pinch roller 42 to the front side of the apparatus To the back side (upper side in FIG. 8). In this conveying process, the side edge of the tray 110 is in contact with the guide member 49, and the tray 110 slides with respect to the guide member 49.

  After reversing the LF motor 69, the controller 60 monitors whether the LF motor 69 has stopped (S34). Specifically, the control unit 60 monitors whether the rotation of the shaft 45 of the transport roller 41 has stopped while counting the encoder amount of the rotary encoder 67. If the shaft 45 of the transport roller 41 stops, the control unit 60 determines that the LF motor 69 has stopped (S34: YES). If the shaft 45 of the transport roller 41 is rotating, the control unit 60 determines that the LF motor 69 is rotating (S34: NO), and continues the reverse rotation of the LF motor 69.

  As described above, since the carriage 46 is moved to a position corresponding to the first reference portion 115 of the tray 110, when the tray 110 is conveyed to the rear side of the apparatus, as shown in FIG. The reference portion 115 contacts the carriage 46. As a result, the tray 110 cannot be further conveyed to the back side of the apparatus, and the tray 110 stops. The stopped tray 110 stops the rotation of the transport roller 41 and the paper discharge roller 43, and the rotation of the LF motor 69 is stopped (S34: YES). When the tray 110 is conveyed until the first reference portion 115 comes into contact with the carriage 46, the CD 111 passes immediately below the recording head 48 mounted on the carriage 46. Then, the control unit 60 determines the position where the LF motor 69 is stopped as the first origin position (S35).

  Further, the control unit 60 reads the second origin position in the tray 110 recorded in advance in the ROM 62. As shown in FIG. 8, in the image recording on the CD 111, the tray 110 is positioned in the width direction 101 by the side end of the tray 110 being in contact with the guide member 49. Therefore, the second origin position serving as a reference in the width direction 101 can be determined in advance at the time of manufacturing or shipping the multifunction machine 10 from the arrangement of the guide members 49 and the dimensions of the tray 110. Then, the control unit 60 obtains a print start position for starting image recording on the CD 111 based on the first origin position and the second origin position (S36). The print start position is obtained as a position where the LF motor 69 is rotated by a predetermined encoder amount from the first origin position and a position where the carriage 46 is moved by a predetermined encoder amount from the second origin position. Then, the control unit 60 rotates the LF motor 69 in the reverse direction or the normal direction to convey the tray 110 to the printing start position. Further, the CR motor 71 is rotated to move the carriage 46 to the printing start position.

  After transporting the tray 110 to the print start position, the control unit 60 records an image on the print area of the CD 111 on the tray 110 in the same manner as in the first embodiment. In the second embodiment as described above, the same operational effects as those of the first embodiment can be obtained. Similarly to the above-described modification, if the LF motor 69 and the CR motor 71 are stepping motors, the first origin position can be obtained even if the multifunction machine 10 does not include the linear encoder 66 or the rotary encoder 89. In addition, the print start position can be calculated by determining the second origin position.

[Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described. As shown in FIG. 10, in the third embodiment, the second reference portion 116 is provided in the tray 110 in the second embodiment, but the first reference portion 115 is not provided. It differs from the said 1st Embodiment in the point by which the positioning member 35 is provided in the lid | cover 19 of the part 11. FIG. The positioning member 35 is a member having a wall surface that extends along the width direction 101 and is disposed on an extension line of the linear portion 33 of the transport path 23 in a state in which the lid 19 is opened. It contacts the tip of the tray 110 to be conveyed. Since other than these are the same as those in the first embodiment, detailed description of each configuration is omitted.

[Image recording on CD 111 placed on tray 110]
Hereinafter, image recording on the CD 111 will be described with reference to FIGS. 10 and 11. When image recording is performed on the CD 111, the lid 19 is opened. When the lid 19 is opened, the positioning member 35 provided on the lid 19 is also moved together with the lid 19 and arranged on the extended line of the linear portion 33 on the back side of the apparatus. Further, in the curved portion 32 of the transport path 23, the outer guide member 28 is separated from the inner guide member 29, and the curved portion 32 is opened.

  As shown in FIG. 10A, the control unit 60 that has received the print start command drives the CR motor 71 to move the carriage 46 to the home position (HP) (S41). If the carriage 46 is already positioned at the home position, this step may be omitted.

  The user inserts the tray 110 on which the CD 111 is placed into the in-body space 15 from the opening 13 while being approximately aligned with the height position of the linear portion 33 of the transport path 23 (S42). In response to the print start command, the control unit 60 rotates the LF motor 69 at a predetermined timing (S43). The transport roller 41 and the paper discharge roller 43 are rotated by the reverse rotation of the LF motor 69, and the tray 110 inserted into the linear portion 33 of the transport path 23 is transported toward the positioning member 35.

  After reversing the LF motor 69, the control unit 60 monitors whether the LF motor 69 has stopped (S44). Specifically, the control unit 60 monitors whether the rotation of the shaft 45 of the transport roller 41 has stopped while counting the encoder amount of the rotary encoder 67. If the shaft 45 of the transport roller 41 stops, the control unit 60 determines that the LF motor 69 has stopped (S44: YES). If the shaft 45 of the transport roller 41 is rotating, the control unit 60 determines that the LF motor 69 is rotating (S44: NO), and continues the reverse rotation of the LF motor 69.

  When the tray 110 is conveyed to the rear side of the apparatus, the tip of the tray 110 comes into contact with the positioning member 35 as shown in FIG. As a result, the tray 110 cannot be further conveyed to the back side of the apparatus, and the tray 110 stops. The stopped tray 110 stops the rotation of the transport roller 41 and the paper discharge roller 43, and the rotation of the LF motor 69 is stopped (S44: YES). When the tray 110 is conveyed until the front end of the tray 110 comes into contact with the positioning member 35, the CD 111 passes directly under the recording head 48 mounted on the carriage 46. And the control part 60 determines the position which the LF motor 69 stopped as the 1st origin position (S45).

  Next, the controller 60 drives the CR motor 71 to move the carriage 46 toward the guide member 49 (S46). At this time, the tray 110 is stopped, and the carriage 46 overlaps the second reference portion 116 in the depth direction 103 when the tray 110 is stopped.

  After driving the CR motor 71, the controller 60 monitors whether the CR motor 71 has stopped (S47). Specifically, the control unit 60 monitors whether the carriage 46 has stopped while counting the encoder amount of the linear encoder 66. If the carriage 46 stops, the control unit 60 determines that the CR motor 71 has stopped (S47: YES). If the carriage 46 is moving, the controller 60 determines that the CR motor 71 is driven (S47: NO), and continues driving the CR motor 71.

  As described above, since the carriage 46 is positioned so as to overlap the second reference portion 116 of the tray 110, in the process in which the carriage 46 moves toward the guide member 49, as shown in FIG. 2 The reference portion 116 contacts the carriage 46. As a result, the carriage 46 cannot be moved further to the guide member 49 side, and the carriage 46 stops. The rotation of the CR motor 71 is stopped by the stopped carriage 46 (S47: YES). Although the tray 110 receives a force in the width direction 101 due to the contact of the carriage 46, the tray 110 does not move in the width direction 101 by this force when the tray 110 is in sliding contact with the guide member 49. . Then, the controller 60 determines the position where the carriage 46 is stopped as the second origin position (S48).

  Further, when the CR motor 71 stops, the control unit 60 drives the CR motor 71 slightly to move the carriage 46 to the home position side (S49). As a result, the carriage 46 is separated from the second reference portion 116.

  Then, the control unit 60 obtains a print start position for starting image recording on the CD 111 based on the first origin position and the second origin position (S50). The print start position is obtained as a position where the LF motor 69 is rotated by a predetermined encoder amount from the first origin position and a position where the carriage 46 is moved by a predetermined encoder amount from the second origin position. Then, the control unit 60 rotates the LF motor 69 in the reverse direction or the normal direction to convey the tray 110 to the printing start position. Further, the CR motor 71 is rotated to move the carriage 46 to the printing start position.

  After transporting the tray 110 to the print start position, the control unit 60 records an image on the print area of the CD 111 on the tray 110 in the same manner as in the first embodiment. In the third embodiment as described above, the same effects as those of the first embodiment can be obtained. Similarly to the above-described modification, if the LF motor 69 and the CR motor 71 are stepping motors, the first origin position can be obtained even if the multifunction machine 10 does not include the linear encoder 66 or the rotary encoder 89. In addition, the print start position can be calculated by determining the second origin position.

11: Printer unit (image recording device)
23 ... conveying path 25 ... recording unit 35 ... positioning member 41 ... conveying roller (conveying means)
42 ... Pinch roller (conveying means)
43... Discharge roller (conveying means)
44 ... spur (conveyance means)
49... Guide member 51... Encoder disk (drive amount detecting means)
52... Optical sensor (drive amount detection means)
55 ... Encoder strip (position detection means)
56 ... Optical sensor (position detecting means)
60... Control unit (control means)
110 ... Tray 111 ... CD (recording member)
112 .. recessed portion (fixed portion)
115 ... 1st reference part 116 ... 2nd reference part

Claims (8)

A tray having a fixing portion for fixing a thin plate-shaped recording member;
A transport path through which the tray is transported;
Recording that is provided in the transport path and selectively ejects ink droplets onto a recording medium supported by the tray while being moved in a second direction that intersects the first direction in which the tray is transported. And
Conveying means for conveying the tray to a position facing the recording unit;
Control means for selectively discharging ink droplets while transporting the tray by a distance corresponding to a target driving amount and stopping the recording unit in a second direction,
The tray is provided at a fixed position in the first direction with respect to the fixed portion, and a first reference portion that can contact the recording portion in the first direction, and a fixed value in the second direction with respect to the fixed portion. And a second reference portion that can come into contact with the recording portion in the second direction,
The control unit moves the recording unit to a position where the recording unit can come into contact with the first reference unit, causes the transport unit to transport the tray, and the first unit when the recording unit comes into contact with the first reference unit. The position in the direction is the first origin position, the tray is transported to the transport means to a position where the recording section can come into contact with the second reference section, the tray is stopped, and the recording section is moved in the second direction. Then, the position in the second direction when the recording unit is in contact with the second reference unit is set as the second origin position, and the recording medium member is arranged on the basis of the first origin position and the second origin position. An image recording apparatus for determining a recording start position at which the recording unit starts image recording. A position detection unit that detects a position of the recording unit in the second direction; and a drive amount detection unit that detects a drive amount of the transport unit;
The control unit stops the tray by transporting the tray by a distance corresponding to the target drive amount based on the drive amount detected by the drive amount detection unit, and stops at the position of the recording unit detected by the position detection unit. Based on this, the ink droplets are selectively ejected while moving the recording unit in the second direction,
The position when it is determined that the tray has stopped based on the drive amount detected by the drive amount detection means is the first origin position, and the recording unit is stopped based on the position detected by the position detection means. The image recording apparatus according to claim 1, wherein the position when it is determined that the second origin position is determined is the second origin position. A tray having a fixing portion for fixing a thin plate-shaped recording member;
A transport path through which the tray is transported;
Recording that is provided in the transport path and selectively ejects ink droplets onto a recording medium supported by the tray while being moved in a second direction that intersects the first direction in which the tray is transported. And
Conveying means for conveying the tray to a position facing the recording unit;
A guide member provided in the transport path and extending along a first direction, on which a tray that is transported along the transport path is slid;
Control means for selectively discharging ink droplets while transporting the tray by a distance corresponding to a target driving amount and stopping the recording unit in a second direction,
The tray has a first reference portion which is provided at a fixed position in the first direction with respect to the fixed portion and can come into contact with the recording portion in the first direction.
The control unit moves the recording unit to a position where the recording unit can come into contact with the first reference unit, causes the transport unit to transport the tray, and the first unit when the recording unit comes into contact with the first reference unit. Recording in which the recording unit starts image recording with respect to the recording medium member based on the first origin position and the previously obtained second origin position in the second direction. An image recording apparatus for determining a start position. A driving amount detecting means for detecting the driving amount of the conveying means;
The control unit stops the tray by transporting the tray by a distance corresponding to the target drive amount based on the drive amount detected by the drive amount detection unit, and moves the recording unit in the second direction to drop ink droplets. Which is selectively ejected,
4. The image recording apparatus according to claim 3, wherein a position when it is determined that the tray has stopped based on the drive amount detected by the drive amount detection means is a first origin position. A tray having a fixing portion for fixing a thin plate-shaped recording member;
A transport path through which the tray is transported;
Recording that is provided in the transport path and selectively ejects ink droplets onto a recording medium supported by the tray while being moved in a second direction that intersects the first direction in which the tray is transported. And
Conveying means for conveying the tray to a position facing the recording unit;
A positioning member that is provided in the transport path and contacts the leading end of the tray in the first direction in the transport path in a state where the recording member does not face the recording head;
Control means for selectively discharging ink droplets while stopping the tray at a position facing the recording unit and moving the recording unit in the second direction,
The tray has a second reference portion that is provided at a fixed position in the second direction with respect to the fixed portion, and can come into contact with the recording portion in the second direction.
The control means causes the transport means to transport the tray toward the positioning member, sets a position in the first direction when the tray contacts the positioning member as a first origin position, and sets the tray to the recording position. The tray is stopped by transporting it to the position where the section can come into contact with the second reference section, the tray is stopped, the recording section is moved in the second direction, and the recording section comes into contact with the second reference section. A recording start position at which the recording unit starts image recording with respect to the recording medium member based on the first origin position and the second origin position, with the position in the second direction at this time being the second origin position. An image recording apparatus for determining A driving amount detection unit that detects a driving amount of the transport unit; and a position detection unit that detects a position of the recording unit in the second direction;
The control unit stops the tray by transporting the tray by a distance corresponding to the target drive amount based on the drive amount detected by the drive amount detection unit, and stops at the position of the recording unit detected by the position detection unit. Based on this, the ink droplets are selectively ejected while moving the recording unit in the second direction,
The position when it is determined that the tray has stopped based on the driving amount detected by the driving amount detection means is the first origin position, and the recording unit has stopped based on the position detected by the position detection means. The image recording apparatus according to claim 5, wherein the position at which it is determined is the second origin position. A guide member provided in the transport path and extending along the first direction; further comprising a guide member on which a tray transported through the transport path is slid;
The image recording apparatus according to claim 1, wherein the control unit makes the recording unit contact the second reference unit while moving the recording unit in a direction approaching the guide member.   The control means acquires the first origin position while the tray is transported in the first direction in the first direction by the transport means, and the tray is located at a position higher than the position where the first origin position is acquired. The ink droplets are selectively ejected while the tray is stopped at a position facing the recording unit and the recording unit is moved in the second direction in a state of being located on the second direction side in the direction. The image recording apparatus according to any one of 1 to 7.

Images