JP2005178267A - Recording device and recording control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect the correct center point position of an optical recording disc fitted to a disc tray in a shorter time than when a conventional device is used and without advancing the disc tray to the outside of a recording device, in the recording device equipped with the disc tray internally installed in such a way that the disc tray is movable in a subscan direction. <P>SOLUTION: In this recording device, the rear end of a reference mark 73 is detected by a PW sensor 34 and the value obtained by adding a correction value HR_YLU to an integrated value of a conveyance level in a position where the rear end of the reference mark 73 is detected, is given as a reference position (CY=0) for a disc tray 7 conveyance position. In addition, a position which is transferred by a conveyance level obtained by adding a correction value PCYoffset to 1672step as "established value α" toward the center position of an optical recording disc 7 from the reference position (CY=0), is given as a center position Yc of the optical recording disc D in a subscan direction Y. The "established value α" is a value represented by an interval between the reference mark 73 and the center point position CP of the optical recording disc D as fitted to an optical disc fitting part 72 in the subscan direction Y. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a main scanning driving means for reciprocating a recording head for ejecting ink onto a recording material in a main scanning direction, and a label surface of an optical recording disk mounted on an optical recording disk mounting portion to which an optical recording disk can be attached and detached. Is a disc tray movably installed in the sub-scanning direction so as to be a recording surface by the main scanning driving means, and the disc tray is conveyed by a predetermined conveyance amount in the sub-scanning direction, and the optical recording disc is transferred to the disc tray. When attaching and detaching the optical recording disk, the sub-scanning drive means having a configuration capable of extending the disk tray to the outside until the position where the optical recording disk mounting portion is exposed to the outside, and the end of the optical recording disk and the disk tray Optical recording that detects the positions of both ends in the main scanning direction of the optical recording disk mounted on the disk tray by reciprocating in the main scanning direction a detector that can detect the boundary without contact. A recording apparatus and a disc edge position detecting means.

  The operation of ejecting ink from a recording head that reciprocates in the main scanning direction onto a recording material such as recording paper and the operation of conveying the recording material by a predetermined conveyance amount in the sub-scanning direction are alternately repeated to perform recording. In a recording apparatus such as an ink jet recording apparatus that performs recording on the surface of a material, a recording apparatus having a configuration capable of recording on a label surface of an optical recording disk such as a CD-R is known and generally widely used. It is popular. Such a recording apparatus includes a disk tray on which an optical recording disk can be mounted as means for transporting the ink ejection area by the recording head in the sub-scanning direction in the same manner as a recording material such as recording paper. A means for conveying the disk tray in the sub-scanning direction is provided, and the user inserts the disk tray loaded with the optical recording disk from the front or rear surface of the recording apparatus into the recording material conveyance path to the predetermined position in the sub-scanning direction. After that, when the recording start button or the like is operated, the recording to the disc tray is executed in the same manner as the recording to the recording paper, and the recording to the label surface of the optical recording disc is executed. It is common. Therefore, when recording on the label surface of the optical recording disk mounted on the disk tray, recording is performed by appropriately setting the ink ejection area according to the size and shape of the label surface of the optical recording disk. It is necessary, however, if the disc tray insertion position by the user or the optical recording disc mounting position on the disc tray is deviated from the predetermined position, the recording execution position on the label surface of the optical recording disc is misaligned. There is a risk that the disc tray may be stained with ink by jetting ink onto the disc tray.

  As an example of the prior art that solves such a problem, a user inserts a disk tray loaded with an optical recording disk from a front surface or a rear surface of the recording apparatus into a recording material conveyance path to a predetermined position, and then starts a recording start button. And the like, the recording is executed after the accurate position of the optical recording disk is detected before the recording on the label surface of the optical recording disk is started. For example, an optical sensor or the like that can detect the edge of the optical recording disk on the disk tray is disposed on a carriage or the like on which the recording head is mounted, and the optical recording disk is started before recording on the label surface of the optical recording disk. A recording apparatus that detects both end positions in the main scanning direction and both end positions in the sub-scanning direction and sets an ink ejection area in accordance with the position of the optical recording disk based on the detected end position of the optical recording disk is known (For example, see Patent Document 1).

JP 2003-217259 A

  However, in a general ink jet recording apparatus, the speed at which the recording material is conveyed in the sub-scanning direction is much slower than the carriage moving speed in the main scanning direction. As described above, in order to detect the positions of both ends of the optical recording disk in the sub-scanning direction, an operation of transporting the disk tray in the sub-scanning direction by the length of the diameter of the optical recording disk is involved. However, there is a problem that it takes a certain amount of time to detect an accurate position of the optical recording disk. In addition, by the operation that the disc tray is transported in the sub-scanning direction by the length of the diameter of the optical recording disc, the disc tray inserted in the sub-scanning direction up to the predetermined insertion position by the user operates the recording start button and the like, Since the movement is large in the scanning direction, there is a possibility that the user may mistakenly recognize a malfunction or give the user a sense of discomfort.

  Further, for example, a disc tray is built in an ink jet recording apparatus, such as a CD player or a DVD player. When an optical recording disc is attached to or detached from the disc tray, the disc tray is moved outside by operating a button or the like. An ink jet recording apparatus that has a configuration of advancing or retracting inside has also appeared. In such an ink jet recording apparatus, when an optical recording disk is mounted on the disk tray and the disk tray is retracted into the ink jet recording apparatus, a recording start button or the like is operated, and the optical recording disk is moved in the sub-scanning direction. When detecting the position of both ends, the disc tray may temporarily move to the outside, and the disc tray temporarily moves to the outside at a timing unexpected by the user, so it is strong for the user There is a risk of giving a sense of incongruity. Alternatively, the user mistakenly presses the disc tray operation button and tries to push the disc tray back by hand, or the disc tray has a misplaced optical recording disc. May mistakenly recognize that it has advanced to the outside and touch the optical recording disk by hand, so that the mounting position of the optical recording disk is shifted and the accurate position of the optical recording disk cannot be detected. There is a fear.

  The present invention has been made in view of such a situation, and the problem is that in a recording apparatus including a disc tray that is movably provided in the sub-scanning direction, the disc can be used in a shorter time than in the past. An accurate center point position of the optical recording disc mounted on the disc tray is detected without causing the tray to move outside the recording apparatus.

  To achieve the above object, according to a first aspect of the present invention, there is provided an optical recording disc in which a main scanning driving means for reciprocating a recording head for ejecting ink onto a recording material in the main scanning direction and an optical recording disc are detachable. A disc tray that is movably provided in the sub-scanning direction so that the label surface of the optical recording disc mounted on the mounting portion becomes a recording surface by the main scanning driving means, and the disc tray is moved in the sub-scanning direction in a predetermined manner. The disc tray can be extended to the position where the optical recording disc mounting portion is exposed to the outside when the optical recording disc is attached to and detached from the disc tray. And a sub-scanning drive means having a detector that can detect the boundary between the end of the optical recording disk and the disk tray in a non-contact manner in the main scanning direction. Optical recording disk end position detecting means for detecting the positions of both ends of the optical recording disk mounted on the disc tray in the main scanning direction, the main scanning driving means, the sub-scanning driving means, and the optical recording disk end position And a recording control unit that controls the detection unit to perform recording on the label surface of the optical recording disk, and the disk tray serves as a reference for the position of the disk tray in the sub-scanning direction. The reference mark detectable by the detector is formed in a region other than the optical recording disk mounting portion on the same surface as the surface on which the optical recording disk mounting portion is formed, and the reference mark and the light The interval in the sub-scanning direction with respect to the center point position of the optical recording disk mounted on the recording disk mounting section is set as a predetermined value α, and the optical recording disk mounting section and the reference mark The recording control means can scan the optical recording disk with the optical recording disk end position detection means in a state where the disk tray does not protrude outside the recording apparatus. A main scanning line is set in advance on the disk tray, the disk tray is conveyed to a position where the main scanning line can be scanned by the detector, and both end positions of the optical recording disk on the main scanning line are Detected by the optical recording disk end position detecting means, the center point on the main scanning line of the both end positions of the detected optical recording disk is set as the center position in the main scanning direction of the optical recording disk, and the reference mark is detected. The position moved from the position to the center point position of the optical recording disk by the length of the predetermined value α in the sub-scanning direction is set as the center position of the optical recording disk in the sub-scanning direction. A center point position of the optical recording disk is calculated, a recording execution area on the label surface of the optical recording disk is set based on the calculated center point position of the optical recording disk, and The recording apparatus is characterized by executing recording.

  Main scanning lines that can be scanned by the optical recording disk end position detecting means on the optical recording disk in a state where the disk tray does not protrude outside the recording apparatus are set in advance on the disk tray. First, the reference mark is detected by the optical recording disk end position detecting means, and the position of the disk tray in the sub-scanning direction is detected with the position where the reference mark is detected as the reference position. Next, with the above-described disc tray not projecting outside the recording apparatus, the main scanning line that can be scanned by the optical recording disc end position detecting means on the optical recording disc is moved to a position where it can be scanned by the detector. The optical recording disk end position detecting means detects the positions of both ends of the main scanning line. Since the optical recording disk has a circular outer shape, the center point of the both end positions on the main scanning line of the detected optical recording disk is the center position in the main scanning direction of the optical recording disk. On the other hand, when detecting the center position of the optical recording disk in the sub-scanning direction, the position of the reference mark is detected without detecting the end position of the optical recording disk in the sub-scanning direction, that is, the sub-scanning direction of the disk tray. The position moved in the sub-scanning direction from the reference position for detecting the position toward the center point position of the optical recording disk by the length of the predetermined value α is defined as the center position in the sub-scanning direction of the optical recording disk. In the recording apparatus according to the present invention, the disk tray is disposed in the recording apparatus, and is transported by the sub-scanning driving means in the sub-scanning direction by a predetermined transport amount and disposed at the predetermined reference position. A disc tray insertion position shift or inclination which occurs in a recording apparatus configured to manually insert a tray does not occur. Therefore, the center position of the optical recording disk in the sub-scanning direction can be specified with high accuracy from the position of the disk tray in the sub-scanning direction based on the reference mark formed on the disk tray. There is an effect that the accurate center point position of the optical recording disk mounted on the disk tray can be detected without advancing.

  Further, since the end position of the optical recording disk in the sub-scanning direction is not detected when determining the center position of the optical recording disk in the sub-scanning direction, the scanning speed is significantly higher than that in the main scanning direction in a general recording apparatus. The scanning distance in the slow sub-scanning direction can be greatly shortened compared to the conventional method for detecting both end positions in the sub-scanning direction. As a result, it is possible to obtain an operational effect that the accurate center point position of the optical recording disk can be detected in a shorter time than in the prior art.

  A second aspect of the present invention is the recording apparatus according to the first aspect, wherein the predetermined value α is set to an optimum value for each recording apparatus. Since the default value α is set to an optimum value for each recording apparatus, it becomes possible to specify the center position of the optical recording disk in the sub-scanning direction with higher accuracy, and thereby to the label surface of the optical recording disk. Can be set with higher accuracy.

  According to a third aspect of the present invention, there is provided a recording apparatus characterized by having a configuration capable of correcting the value of the predetermined value α in the first aspect or the second aspect described above. is there. For example, if a detection error occurs in the detector due to secular change or a disc tray transport error occurs due to the sub-scanning drive means, the recording execution position on the label surface of the optical recording disc may be shifted. is there. Therefore, for example, by allowing the user to correct the predetermined value α in accordance with the amount of deviation of the recording execution position on the label surface of the optical recording disk after execution of recording, the recording execution position caused by secular change can be corrected. Recording on the label surface of the optical recording disk can be performed with the deviation corrected appropriately.

  According to a fourth aspect of the present invention, in any one of the first to third aspects described above, the optical recording on the same surface as the surface on which the optical recording disk mounting portion is formed on the disk tray. 2 arranged on the same main scanning line in an area other than the disc mounting portion, and formed so that the midpoint position becomes the center point position in the main scanning direction of the optical recording disc mounted on the optical recording disc mounting portion. Two center point position detection marks are formed, and the recording control means conveys the disk tray to a position where the two center point position detection marks can be scanned by the detector, and the optical recording disk The positions of the two center point position detection marks are detected by the end position detecting means, the center position in the main scanning direction of the optical recording disk calculated from the both end positions of the optical recording disk, and the two centers point Compared with the center position in the main scanning direction of the optical recording disk calculated from the position of the position detection mark, and when there is a certain difference or more, calculated from the positions of the two center point position detection marks The recording apparatus is characterized in that a recording execution area on the label surface of the optical recording disk is set based on the center position in the main scanning direction of the optical recording disk.

  When the label surface of the optical recording disk to be recorded is normal, the center position of the optical recording disk in the main scanning direction is obtained from the positions of both ends of the optical recording disk (more precisely, the positions of both ends of the label surface). be able to. However, the label surface of the optical recording disk is in a normal state because, for example, the label surface of the optical recording disk to be recorded is partially soiled or a part of the label surface is missing. Otherwise, the accurate X coordinate value of the center point of the optical recording disk cannot be calculated from the positions of both ends of the optical recording disk, and the recording execution area with respect to the label surface may be greatly shifted. Therefore, in such a case, it is more accurate to calculate the center position in the main scanning direction of the optical recording disk from the positions of the two center point position detection marks formed on the disk tray. The center point position can be obtained. Thus, in this way, the optical recording disk calculated from the center position in the main scanning direction of the optical recording disk calculated from the positions of both ends of the optical recording disk and the positions of the two center point position detection marks formed on the disk tray. The center position in the main scanning direction is compared. If the label surface of the optical recording disk is in a normal state, the center position in the main scanning direction of the optical recording disk calculated from the positions of both ends of the optical recording disk and the two center point positions formed on the disk tray are detected. There should be no substantial difference between the center position in the main scanning direction of the optical recording disk calculated from the position of the mark, and they should almost match. Therefore, if there is a certain difference between the two, it can be considered that the label surface of the optical recording disk is not in a normal state. Therefore, the main record of the optical recording disk calculated from the positions of the two center point position detection marks is used. A recording execution area on the label surface of the optical recording disk is set based on the center position in the scanning direction. Thereby, even when the state of the label surface of the optical recording disk is not normal, it is possible to prevent the recording execution area with respect to the label surface from deviating greatly.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects described above, the recording control means detects both ends of the optical recording disk detected by the optical recording disk end position detecting means. The diameter of the optical recording disk is calculated from the interval of the main positions in the main scanning direction, and a recording execution area on the label surface of the optical recording disk is set based on the calculated diameter of the optical recording disk. Recording device.

  As a general optical recording disk, a disk having a diameter of 12 cm and a disk having a diameter of 8 cm such as a single CD of a music CD are known. The diameter of the optical recording disk mounted on the optical recording disk mounting section is calculated from the end position of the optical recording disk detected by the optical recording disk end position detecting means and the calculated center point position of the optical recording disk. can do. Then, by setting the recording execution area on the label surface of the optical recording disk based on the calculated diameter of the optical recording disk, an accurate recording execution area corresponding to the size of the optical recording disk can be set.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects described above, the sub-scanning drive unit is configured to carry transport that rotates in the sub-scanning direction when the driving force of the driving force source is transmitted. A roller and a conveyance driven roller that is urged against the outer peripheral surface of the conveyance drive roller and is pivotally supported so as to be driven to rotate in the sub-scanning direction, and the disk tray is connected to the conveyance drive roller and the conveyance driven roller. The conveyance drive roller, the conveyance driven roller, and the detector are configured to be conveyed in the sub-scanning direction by the rotation of the conveyance drive roller while being sandwiched, and the detector is arranged on the main scanning line. The recording apparatus is arranged to have a positional relationship to sandwich the optical recording disk mounting portion of the disk tray during scanning.

  Thus, the end of the optical recording disk can be detected while the optical recording disk is sandwiched between the transport driving roller and the transport driven roller, so that the above-described disk tray does not protrude outside the recording apparatus. While detecting the end position in the main scanning direction of the optical recording disk on the main scanning line that can be scanned by the optical recording disk end position detecting means on the optical recording disk, the mounting position of the optical recording disk is shifted. It is possible to reduce the risk of being lost. Thereby, recording on the label surface of the optical recording disk can be performed more accurately.

  According to a seventh aspect of the present invention, in any one of the first to sixth aspects described above, the main scanning drive unit is configured such that the recording head is mounted on a carriage that is pivotally supported so as to reciprocate in the main scanning direction. The optical recording disk end position detecting means includes a detector mounted on the carriage, and the detector is moved in the main scanning direction by reciprocating the carriage in the main scanning direction. The recording apparatus is characterized in that it has a configuration for reciprocating.

  Thus, by mounting the detector on the carriage that is pivotally supported so as to reciprocate in the main scanning direction in order to reciprocate the recording head in the main scanning direction, the detector is reciprocated in the main scanning direction. Without providing this means separately, the detector can be reciprocated in the main scanning direction by reciprocating the carriage. In other words, the cost of the recording apparatus can be reduced by configuring the optical recording disk end position detecting means using the carriage as the main scanning driving means for executing recording and the means for reciprocating the carriage. it can.

  According to an eighth aspect of the present invention, there is provided the main scanning driving means for reciprocating the recording head for ejecting ink onto the recording material in the main scanning direction, and the optical recording disk mounting portion on which the optical recording disk is removable. A disc tray that is movably movable in the sub-scanning direction so that the label surface of the optical recording disc becomes a surface to be recorded by the main scanning driving means, and the disc tray is transported in the sub-scanning direction by a predetermined transport amount. In addition, when the optical recording disk is attached to or detached from the disk tray, sub-scanning driving means having a configuration capable of extending the disk tray to the outside until the optical recording disk mounting portion is exposed to the outside; A detector that can detect the boundary between the end of the optical recording disk and the disk tray in a non-contact manner is reciprocated in the main scanning direction, and is mounted before the disk tray is mounted. In a recording apparatus comprising optical recording disk end position detecting means for detecting both end positions in the main scanning direction of the optical recording disk, the main scanning driving means, the sub-scanning driving means, and the optical recording disk end position A recording control program for causing a computer to execute a control for controlling a detecting unit to perform recording on a label surface of the optical recording disk, wherein the disk tray has a position of the disk tray in a sub-scanning direction. A reference mark that can be detected by the detector serving as a reference is formed in a region other than the optical recording disk mounting portion on the same surface as the surface on which the optical recording disk mounting portion is formed. And an optical recording disk mounted on the optical recording disk mounting portion, a distance in the sub-scanning direction between the center point position of the optical recording disk and the optical recording disk is set as a predetermined value α. It is set based on the mounting position and the formation position of the reference mark, and the optical recording disk is scanned by the optical recording disk end position detecting means in a state where the disk tray does not protrude outside the recording apparatus. Possible main scanning lines are set in advance on the disk tray, and the disk tray is conveyed to a position where the main scanning line can be scanned by the detector, and both ends of the optical recording disk on the main scanning line are conveyed. The position of the optical recording disk is detected by the end position detecting means of the optical recording disk, and the center point on the main scanning line of the detected both end positions of the optical recording disk is set as the center position in the main scanning direction of the optical recording disk, The position moved by the length of the predetermined value α in the sub-scanning direction from the position where the reference mark is detected toward the center point position of the optical recording disk is the sub-scanning direction of the optical recording disk. A procedure for calculating the center point position of the optical recording disk as a center position, and a recording execution area on the label surface of the optical recording disk is set based on the calculated center point position of the optical recording disk, and the optical recording disk A recording control program characterized by having a procedure for executing recording on the label surface.

  According to the recording control program described in the eighth aspect of the present invention, it is possible to obtain the same function and effect as those of the invention described in the first aspect described above, and any one capable of executing this recording control program This recording apparatus can provide the same effects as those of the invention described in the first aspect.

  A ninth aspect of the present invention is the recording control program according to the eighth aspect, wherein the predetermined value α is set to an optimum value for each recording apparatus in the manufacturing process.

  According to the recording control program described in the ninth aspect of the present invention, it is possible to obtain the same effects as the invention described in the second aspect described above, and any one that can execute this recording control program This recording apparatus can provide the same effects as the invention described in the second aspect.

  According to a tenth aspect of the present invention, there is provided a recording control program according to the eighth aspect or the ninth aspect, further comprising a procedure for correcting the value of the predetermined value α.

  According to the recording control program described in the tenth aspect of the present invention, it is possible to obtain the same function and effect as the invention described in the third aspect described above, and any one capable of executing this recording control program This recording apparatus can provide the same effects as the invention described in the third aspect.

  According to an eleventh aspect of the present invention, in any one of the eighth to tenth aspects described above, the optical recording on the same surface as the surface on which the optical recording disk mounting portion is formed on the disk tray. 2 arranged on the same main scanning line in an area other than the disc mounting portion, and formed so that the midpoint position becomes the center point position in the main scanning direction of the optical recording disc mounted on the optical recording disc mounting portion. Two center point position detection marks are formed, and the disk tray is transported to a position where the two center point position detection marks can be scanned by the detector, to the optical recording disk end position detection means. The procedure for detecting the positions of the two center point position detection marks, the center position in the main scanning direction of the optical recording disk calculated from the positions of both ends of the optical recording disk, and the detection of the two center point positions The optical recording disk calculated from the positions of the two center point position detection marks is compared with the center position in the main scanning direction of the optical recording disk calculated from the position of the mark, and if there is a certain difference or more And a procedure for setting a recording execution area on the label surface of the optical recording disk based on the center position in the main scanning direction.

  According to the recording control program described in the eleventh aspect of the present invention, it is possible to obtain the same operational effects as the invention described in the fourth aspect described above, and any one that can execute this recording control program This recording apparatus can provide the same effects as the invention described in the fourth aspect.

  According to a twelfth aspect of the present invention, in any one of the eighth to eleventh aspects described above, the main scanning direction of both end positions of the optical recording disk detected by the optical recording disk end position detecting means And calculating a diameter of the optical recording disk from the interval, and setting a recording execution area on the label surface of the optical recording disk based on the calculated diameter of the optical recording disk. Recording control program.

  According to the recording control program described in the twelfth aspect of the present invention, it is possible to obtain the same operational effects as those of the invention described in the fifth aspect described above, and any one capable of executing this recording control program This recording apparatus can provide the same effects as the invention described in the fifth aspect.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the ink jet recording apparatus, and FIG. 2 is a perspective view of the ink jet recording apparatus with the main body cover removed. FIG. 3 is a schematic side sectional view of the ink jet recording apparatus. FIG. 4 is a block diagram of a control unit that performs various controls of the ink jet recording apparatus.

  First, a schematic configuration of an ink jet recording apparatus 50 as a “recording apparatus” according to the present invention will be described with reference to FIGS. The ink jet recording apparatus 50 has a box-like appearance, is formed as large as a video tape recorder, and is configured to be used in a state of being stored in a TV rack or the like. ing. A front cover 2 that can be opened and closed in front is provided at the front center of the box-shaped body cover 1. From the opening of the front cover 2 that opens to the front, The recording paper P as “recording material” is discharged. Further, the front cover 2 serves as a stacker for stacking recording sheets P discharged after recording is performed with the front cover 2 opened to the front side. Further, the ink jet recording apparatus 50 has a configuration in which an optical recording disk D as a “recording material” can be attached and detached, and the label surface of the optical recording disk becomes a recording surface by a main scanning driving means described later. A disk tray 7 is provided so as to be movable in the scanning direction. When recording is performed on the label surface of an optical recording disk D such as a DVD, the recording is performed on the optical recording disk D mounted on the disk tray 7. The disc tray 7 temporarily protrudes from the inside of the ink jet recording apparatus 50 during recording. A paper feed cassette 8 as a “recording paper storage unit” for stacking the recording papers P is provided below the front cover 2, and recording is performed in the paper feeding cassette 8 while being pulled out to the front side. Paper P can be stacked. An openable / closable cover 3 is provided above the front cover 2, and an ink cartridge unit 15 is provided in the openable / closable cover 3. In the ink cartridge unit 15, a plurality of ink cartridges 16 (see FIG. 3) filled with ink are detachably arranged side by side in the width direction of the ink jet recording apparatus 50, and the open / close cover 3 is opened. The ink cartridge 16 can be replaced. On the left side of the front cover 2, a memory slot cover 4 having a memory slot to which a flash memory card and the like can be attached and detached is disposed.

  Next, an outline of the internal configuration of the ink jet recording apparatus 50 will be described with reference to FIG. The base of the ink jet recording apparatus 50 includes a lower chassis 13, a main frame 11 extending in the width direction of the main body of the ink jet recording apparatus 50, and a depth direction of the main body of the ink jet recording apparatus 50 disposed on both sides of the main frame 11. The side frame right 12 and the side frame left 14 are parallel to each other. Between the right side frame 12 and the left side frame 14, a carriage guide shaft 51 and a sub carriage guide shaft 511 are pivotally supported at a predetermined interval in the sub scanning direction Y in parallel with the main scanning direction X. . The carriage guide shaft 51 and the sub-carriage guide shaft 511 are guide shafts for supporting the carriage 61 on which the recording head 62 for ejecting ink onto the recording paper P is mounted so as to be able to reciprocate in the main scanning direction X. 51, the rear portion of the carriage 61 is inserted, and the sub-carriage guide shaft 511 supports the front portion of the carriage 61 from below, thereby the recording head 62 (FIG. 3) mounted on the carriage 61 and the recording head 62. The carriage 61 is supported so as to be able to reciprocate in the main scanning direction X in a state where a distance between the head surface and the recording paper P facing the platen gap (platen gap: hereinafter referred to as “PG”) is defined.

Next, the conveyance path of the recording paper P as the “recording material” and the disc tray 7 will be described with reference to FIGS.
An “automatic paper feeder” that automatically feeds recording paper P one by one as a recording material toward a “sub-scanning drive unit” described later includes a paper feed cassette 8 and a paper feed roller 83. A hopper 81 is provided at the bottom of the paper feed cassette 8 on which a plurality of recording papers P are stacked. The hopper 81 is disposed so as to be swingable with a shaft 82 as a swing shaft. By pushing up the recording paper P stacked on the hopper 81 from below, recording is performed on a paper feed roller 83 provided on the top. Press the paper P. The paper feed roller 83 has a substantially D shape when viewed from the side, and the outer periphery is formed of a high friction member (for example, a rubber material). When the recording paper P is fed, the uppermost recording paper P in contact with the arc portion of the paper feeding roller 83 is fed in the sub-scanning direction Y by the rotation of the paper feeding roller 83. The “automatic paper feeder” is disposed below the paper feed roller 83, and the recording paper P whose surface is pressed against the outer peripheral surface of the paper feed roller 83 by the hopper 81 is fed by the drive rotation of the paper feed roller 83. A separation pad (not shown) is provided for preventing the other recording paper P from being overlapped when being fed in the paper direction (sub-scanning direction Y). By feeding the recording paper P while rotating the paper feeding roller 83 with the recording paper P sandwiched between the separation pad and the paper feeding roller 83, the recording paper P to be fed and the other are about to be fed. The recording paper P is separated. Further, the “automatic paper feeder” pushes back the recording paper P, which is separated by the separation pad and partially protrudes outside the paper feeding cassette 8 on which the recording paper P is stacked, into the paper feeding cassette 8. In addition, the recording paper P partially protruding outside the paper feed cassette 8 is disposed under the paper feed roller 83 so as to be able to advance into the paper feed path so as to be pushed toward the paper feed cassette 8. A paper return lever (not shown) is provided.

  On the downstream side of the paper feed roller 83 in the sub-scanning direction Y, a conveyance drive roller 53 having a high frictional resistance film uniformly applied to the outer peripheral surface, and can be driven to rotate while being pressed and urged by the conveyance drive roller 53. A conveyance driven roller 54 that is pivotally supported by the PF motor 57 as a “conveyance drive motor” that drives the conveyance drive roller 53 and a “rotation” that detects the rotation amount of the conveyance drive roller 53. The rotary encoder 31 as “amount detection means” constitutes “sub-scanning drive means” for transporting the recording paper P or the disc tray 7 in the sub-scanning direction Y by a predetermined transport amount. The “sub-scanning driving means” sandwiches the recording paper P or the disk tray 7 between the transport driving roller 53 and the transport driven roller 54, and the rotational driving force of the PF motor 57 is transmitted to the pulley 59 via the endless belt 58. The recording paper P or the disk tray 7 is transported in the sub-scanning direction Y by the rotation of the transport driving roller 53 that is driven and rotated by the rotation of the pulley 59 transmitted through an intermediate gear (not shown). Then, the rotation amount of the PF motor 57 is described later according to the rotation amount of the conveyance drive roller 53 detected by the rotary encoder 31 so that the recording paper P or the disc tray 7 is conveyed by a predetermined conveyance amount. It is controlled by the control unit 100 as “means”.

  A platen 52 is disposed on the downstream side of the transport driving roller 53 in the sub-scanning direction Y so as to face the head surface of the recording head 62 in the vertical direction. The recording paper P or the disc tray 7 conveyed by the above-mentioned “sub-scanning driving means” is supported by the platen 52 from below, and the recording head 62 reciprocates in the main scanning direction X by the “main scanning driving means”. Recording is performed by ejecting ink from the ink. The “main scanning driving means” includes a carriage 61 and a CR motor 63 as a “carriage driving motor” serving as a driving force source for reciprocating the carriage 61. The rotational driving force of the CR motor 63 is shown in FIG. A rotational motion is converted into a linear reciprocating motion and transmitted to the carriage 61 via a driving force transmission mechanism such as an endless belt (not shown). In this embodiment, the recording head 62 is provided at the bottom of the carriage 61, but no ink cartridge is mounted on the carriage 61 that reciprocates in the main scanning direction X, and the ink cartridge unit 15 described above. Ink is supplied to the carriage 61 through the flexible collecting tube 17 from the plurality of ink cartridges 16 stored in the printer.

  On the downstream side of the recording head 62 in the sub-scanning direction Y, the rotational driving force of the PF motor 57 is transmitted and rotated to be driven, and the paper driving roller 55 can be driven and rotated while being urged by the paper discharging drive roller 55. A paper discharge driven roller 56 supported on the shaft is disposed. The recording paper P during and after recording is sandwiched between the paper discharge driving roller 55 and the paper discharge driven roller 56, and the rotational driving force of the PF motor 57 is transmitted to the pulley 59 via the endless belt 58. The rotation of 59 is transmitted through an intermediate gear (not shown) and the like, and is discharged from the opening that opens the front panel 2 in the sub-scanning direction Y by the rotation of the discharge driving roller 55 that rotates. A disc tray 7 on which the optical recording disc D can be mounted is disposed above the paper feed cassette 8. The disc tray 7 has a rack 71 (see FIG. 2) formed on the side end thereof, and is arranged so as to be able to move straightly in a substantially horizontal posture by rotation of a pinion gear (not shown) that meshes with the rack 71. ing. Then, after the disk tray 7 is conveyed until the leading end is nipped by the conveyance drive roller 53 and the conveyance driven roller 54 by the rotation of the pinion gear, the conveyance drive roller 53 is rotated in both directions thereafter. It is sent in the sub-scanning direction Y or the reverse feed direction YR. Further, when the optical recording disk D is attached to or detached from the disk tray 7, the optical recording disk D is transported in the sub-scanning direction Y to a position protruding from the opening where the front panel 2 is opened (a position indicated by a virtual line in FIG. 2). Further, the transport drive roller 53, the transport driven roller 54, and the PW sensor 34 scan the optical recording disk D mounted on the optical recording disk mounting section 72 by the PW sensor 34 to detect the end position of the optical recording disk D. When detecting this, the optical recording disk mounting portion 72 of the disk tray 7 is disposed so as to sandwich the optical recording disk mounting portion 72. As a result, the end of the optical recording disk D can be detected while the optical recording disk D on the disk tray 7 is sandwiched between the transport driving roller 53 and the transport driven roller 54. It is possible to reduce the possibility that the mounting position is shifted.

Next, the configuration of the control unit 100 will be described with reference to FIG.
The control unit 100 is connected to a host computer 200 that transmits recording control data to the ink jet recording apparatus 50 so that data can be transmitted and received. The control unit 100 includes a ROM 101, a RAM 102, an interface unit 103, an MPU 104, a DC unit 105, a PF motor driver 106, a CR motor driver 107, a head driver 108, and a nonvolatile memory 109 as a “nonvolatile storage medium”. . The MPU 104 and the DC unit 105 include a rotary encoder 31 as a “rotation amount detection unit” that detects the rotation amount of the transport driving roller 53, and a linear encoder 32 as a “carriage movement amount detection unit” that detects the movement amount of the carriage 61. A paper detector 33 for detecting the start and end of the conveyed recording paper P, a PW sensor 34 mounted on the carriage 61 for detecting the end position of the recording paper P in the main scanning direction X, and an ink jet recording apparatus The output signals of the power source SW 35 for turning on / off the power source 50 and the disk tray SW 36 for performing the operation of inserting / removing the disc tray 7 are input. The PW sensor 34 as a “detector” is an optical sensor provided at the bottom of the carriage 61, and is attached to the disc tray 7 and the presence or absence of the optical recording disc D on the disc tray 7 by main scanning of the carriage 61. This is used to detect the feed position of the disc tray 7 by recognizing the reference mark (described later). Furthermore, it is also used when detecting the end position of the optical recording disk D in the main scanning direction X to detect the center point position of the optical recording disk D.

  The MPU 104 performs arithmetic processing for executing the control program of the ink jet recording apparatus 50 and other necessary arithmetic processing. The ROM 101 stores a control program (firmware) necessary for controlling the ink jet recording apparatus 50, data necessary for processing, and the like. The interface unit 103 has a communication interface function with the host computer 200, receives recording control data from the host computer 200, and also has a driver for the memory slot 37 and an interface function. The RAM 102 is used as a primary storage area for various data including recording control data transferred through the work area of the MPU 104 and the interface unit 103. The nonvolatile memory 109 stores various types of information that need to be retained even after the inkjet recording apparatus 50 is turned off. The DC unit 105 is a control circuit for performing speed control of the PF motor 57 and the CR motor 63 that are DC motors. The DC unit 105 determines the speeds of the PF motor 57 and the CR motor 63 based on the control command sent from the MPU 104, the output signal of the rotary encoder 31, the output signal of the linear encoder 32, and the output signal of the paper detector 33. Various calculations for control are performed, and motor control signals based on the calculation results are sent to the PF motor driver 106 and the CR motor driver 107. The PF motor driver 106 drives and controls the PF motor 57 based on the motor control signal from the DC unit 105. In this embodiment, the PF motor 57 meshes with a paper feed roller 83, a conveyance drive roller 53, a paper discharge drive roller 55, and a rack 71 (see FIG. 2) formed on the side end of the disc tray 7. It becomes a rotational driving force source of a pinion gear (not shown) that conveys the tray 7. The CR motor driver 107 drives or controls the CR motor 63 based on a motor control signal from the DC unit 105 to reciprocate the carriage 61 in the main scanning direction, or stop and hold it. The head driver 59 drives and controls the recording head 62 based on a head control signal from the MPU 104.

  FIG. 5 is a perspective view of the disc tray 7, and FIG. 6 is a plan view of the disc tray 7. The disc tray 7 is formed of a substantially rectangular flat plate member as shown in the figure, and is provided with an optical recording disc mounting portion 72 formed with a circular concave portion in which an optical recording disc D can be mounted. A dot-and-dash line circle indicated by reference numeral D12 represents the outer shape of a typical optical recording disk D having a diameter of 12 cm, and a dot-and-dash line circle indicated by reference numeral D8 is a so-called single CD size light having a diameter of 8 cm. The external shape of the recording disk D is shown. A reference mark 73 that can be detected by the PW sensor 34 serving as a reference for the position of the disk tray 7 in the sub-scanning direction Y is formed on the surface of the disk tray 7 in an area other than the optical recording disk mounting portion 72. . Both ends of the reference mark 73 in the sub-scanning direction Y are bordered by a hole 731 and a hole 732, whereby the reference mark 73 can be formed in a state where the both end positions in the sub-scanning direction Y are positioned with high accuracy. . Further, a mark left 74 and a mark right 75 as “center point position detection marks” that can be detected by the PW sensor 34 are formed on the surface of the disk tray 7. The mark left 74 and the mark right 75 are arranged on the same main scanning line, and the middle point position becomes the center point position CP in the main scanning direction X of the optical recording disk D mounted on the optical recording disk mounting portion 72. It is formed as follows. The left end of the mark left 74 is bordered by a hole 732, and the right end of the mark right 75 is bordered by the right end of the disc tray 7, thereby positioning the position in the main scanning direction X with high accuracy. The mark left 74 and the mark right 75 can be formed.

  Next, control for detecting the center point position CP of the optical recording disk D by the control unit 100 in order to set an accurate recording execution area when recording is performed on the label surface of the optical recording disk D is shown in FIG. This will be described with reference to the plan view of the disc tray 7 and the flowcharts shown in FIGS.

FIG. 7 is a flowchart showing a procedure for detecting the center point position of the optical recording disk D.
With respect to the position in the main scanning direction X of the PW sensor 34 that moves in the main scanning direction X by the reciprocating movement of the carriage 61, one side (left side in FIG. 6) is on the + side and the other side (FIG. The right side in FIG. 6 is defined by the number of EPs in units of the transport amount EP in the negative direction. The transport position of the disc tray 7 in the sub-scanning direction Y is determined by the rear end (reference numeral CY) of the reference mark 73 of the disc tray 7. The position detected by the PW sensor 34 is defined as an integrated value of the number of steps with the minimum transport amount of the PF roller 53 as 1 step, starting from the position detected by the PW sensor 34 (0).
First, a transport driving roller (hereinafter referred to as a PF roller) 53 is rotated in the reverse direction so that the reference mark 72 is an upstream position in the sub-scanning direction Y upstream of the main scanning line of the PW sensor 34 mounted on the carriage 61 ( The disc tray 7 is transported to the position indicated by the symbol S (step S1). Next, the carriage 61 is moved to a position where the detection position of the PW sensor 34 becomes the initial position (position indicated by the symbol W) (step S2). Subsequently, a Y center setting sequence, which will be described later, is executed to obtain the center position of the optical recording disk D in the sub-scanning direction Y (step S3), and an X center setting sequence, which will be described later, is executed to perform the main scanning direction of the optical recording disk D. The center position of X is obtained (step S4). Here, step S5 and subsequent steps in the flowchart will be described after the description of the Y center setting sequence (step S3) and the X center setting sequence (step S4), and FIG. 8 shows the Y center setting sequence. The X center setting sequence will be described with reference to FIGS. 9-1 to 9-3.

FIG. 8 is a flowchart showing a procedure (Y center setting sequence) for obtaining the center position of the optical recording disk D in the sub-scanning direction Y.
Here, the detection value of the PW sensor 34 will be described. The PW sensor 34 is an optical sensor, and measures and outputs the light reflectance of the detection target. The output value of the PW sensor 34 becomes smaller as the light reflectance of the detection target is higher, that is, closer to white, and becomes larger as the light reflectance of the detection target is lower, that is, closer to black. The disc tray 7 is made of a black material, and the reference mark 73, the mark left 74, and the mark right 75 are formed by white coating, so the disc tray 7 (or the hole formed in the disc tray 7). 731, the hole 732, or the outside of the disc tray 7), the output of the PW sensor 34 is substantially the maximum value, and the recording paper P, the optical recording disc D, the reference mark 73, the mark left 74, and The output of the PW sensor 34 in a state in which any of the mark right 75 is detected is substantially minimum. When the output of the PW sensor 34 is larger than the preset threshold value VRS, the disk tray 7 is detected. When the output of the PW sensor 34 is smaller than the threshold value VRS, recording is performed. Assume that any one of the paper P, the optical recording disk D, the reference mark 73, the mark left 74, and the mark right 75 is detected.

  First, the detection position of the PW sensor 34 is in the initial position (the position in the main scanning direction X is indicated by the symbol W and the position in the sub-scanning direction Y is indicated by the symbol S) (step S1, FIG. 7). After resetting the integrated value of the conveyance amount by the PF roller 53 from the step S2), the PF roller 53 is rotated forward until the leading edge of the reference mark 73 is detected by the PW sensor 34, and the disk tray 7 is sub-scanned. While conveying in the direction Y (step S21), it is determined whether or not the PW sensor 34 has detected the tip of the reference mark 73, that is, whether or not the output value of the PW sensor 34 has become less than the threshold value VRS ( Step S22). If the output value of the PW sensor 34 is greater than or equal to the threshold value VRS (No in step S22), that is, if the PW sensor 34 is not detecting the tip of the reference mark 73, then It is determined whether the transport position of the disc tray 7 with respect to the initial position S, that is, the integrated value of the transport amount of the disc tray 7 due to the positive rotation of the PF roller 53 from the initial position S exceeds a certain value (3500 steps) (step) S23). This value is set to a value sufficiently longer than the distance from the initial position S to the tip position of the reference mark 73, and the integrated value of the transport amount of the disc tray 7 due to the positive rotation of the PF roller 53 does not exceed a certain value. (No in step S23), the process returns to step S22 to continue the transport of the disc tray 7 by the PF roller 53, and the integrated value of the transport amount of the disc tray 7 by the positive rotation of the PF roller 53 exceeds a certain value. (Yes in step S23), it is assumed that some abnormality has occurred, the rotation of the PF roller 53 is stopped (step S24), and the procedure ends as an error.

  On the other hand, when the PW sensor 34 detects the tip of the reference mark 73 (Yes in step S22), the PF roller 53 is rotated by 170 steps from the position, and then the rotation of the PF roller 53 is stopped (step S25). . This 170 step corresponds to the width of the reference mark 73 in the sub-scanning direction Y, that is, the distance from the front end to the rear end of the reference mark 73. Subsequently, after resetting the integrated value of the transport amount of the disc tray 7 by the PF roller 53 again, the PF roller 53 is rotated forward until the rear end of the reference mark 73 is detected by the PW sensor 34, and the disc tray 7 is sub-scanned. While conveying in the direction Y (step S26), whether or not the PW sensor 34 has detected the rear end of the reference mark 73 (the boundary between the reference mark 73 and the hole 732), that is, the output value of the PW sensor 34 is the threshold. It is determined whether or not the value VRS has been exceeded (step S27). If the output value of the PW sensor 34 is less than the threshold value VRS (No in step S27), that is, if the PW sensor 34 has not detected the rear end of the reference mark 73, the PF roller It is determined whether or not the integrated value of the transport amount of the disk tray 7 from the time when the integrated value of the transport amount of the disk tray 7 by 53 is reset (step S26) exceeds a certain value (200 step) (step S28). This value is an integrated value of the transport amount of the disk tray 7 from the state in which the detection position of the PW sensor 34 is already positioned in the vicinity of the rear end of the reference mark 73, and therefore a relatively short transport amount even when transport errors are taken into account. Is enough. If the integrated value of the transport amount of the disc tray 7 due to the positive rotation of the PF roller 53 does not exceed a certain value (No in step S28), the process returns to step S27 and the transport of the disc tray 7 by the PF roller 53 is performed. When the integrated value of the transport amount of the disc tray 7 due to the forward rotation of the PF roller 53 exceeds a certain value (Yes in step S28), it is considered that some abnormality has occurred and the rotation of the PF roller 53 is performed. (Step S29), and the procedure ends as an error.

  On the other hand, when the PW sensor 34 detects the rear end of the reference mark 73 (Yes in step S27), a value obtained by adding the correction value HR_YLU to the integrated value of the transport amount at the position where the rear end of the reference mark 73 is detected is obtained from the disk. A reference position (CY = 0) of the transport position of the tray 7 is set (step S30). HR_YLU is a correction value for the detection position shift when detecting the disc tray 7, the hole 731, or the boundary between the hole 732 and the reference mark 73 in the sub-scanning direction Y. From the reference position toward the center position of the optical recording disk 7 (in the direction opposite to the sub-scanning direction Y), the position moved by the carry amount obtained by adding the correction value PCYoffset to 1672 step as the “predetermined value α” is set in the sub-scanning direction Y. The center position Yc of the optical recording disk D is set (step S31). The “predetermined value α” is a value that is an interval in the sub-scanning direction between the reference mark 73 and the center point position CP of the optical recording disk D mounted on the optical recording disk mounting portion 72. The correction value PCYoffset is a correction value for correcting the deviation of the center position of the optical recording disk D in the sub-scanning direction Y due to variations in manufacturing errors of the ink jet recording apparatus 50, and the ink jet recording apparatus 50 is shipped from the factory. This value is adjusted for each ink jet recording apparatus 50 during adjustment. Further, the correction value PCYoffset may be arbitrarily adjusted by the user from the recording execution state on the label surface of the optical recording disk D after recording execution. Then, when the transport amount of the disc tray 7 from the time when the PW sensor 34 detects the rear end of the reference mark 73 reaches 283 step, the PF roller 53 is stopped and the transport of the disc tray 7 is stopped (step S32). . This position is the starting position of the PW sensor 34 in the X center setting sequence described later.

FIGS. 9A to 9C are flowcharts illustrating a procedure (X center setting sequence) for obtaining the center position of the optical recording disk D in the main scanning direction X. FIGS.
The disk tray 7 is a position at which the transport amount of the disk tray 7 has reached 283 steps when the PW sensor 34 detects the rear end of the reference mark 73 at the time when the procedure of step S32 of the above-described Y center setting sequence is executed. Has stopped at. The position of the PW sensor 34 in the sub-scanning direction Y is set in advance as a main scanning line that can scan the optical recording disk D by the PW sensor 34 in a state where the disk tray 7 does not protrude outside the ink jet recording apparatus 50. It is a position that has been. From this state, first, the carriage 61 is moved to a position where the detection position of the PW sensor 34 becomes −475EP (step S41). In addition, it is determined whether or not the output value of the PW sensor 34 has dropped below the threshold value VRS during that time (step S42). If the output value of the PW sensor 34 has not decreased below the threshold value VRS (No in step S42), that is, if the optical recording disk D could not be detected, the optical recording disk mounting portion 72, it is determined that the optical recording disk D is not loaded, and the procedure ends as an error. On the other hand, when the output value of the PW sensor 34 falls below the threshold value VRS (Yes in step S42), the output of the PW sensor 34 is continued while moving the carriage 61 from left to right (step S43). It is determined whether or not the value exceeds the threshold value VRS (step S44). If the output value of the PW sensor 34 is equal to or less than the threshold value VRS (No in step S44), it is then determined whether or not the PW sensor 34 has moved to a position to the right of −884EP (step S45). If the PW sensor 34 has not moved to a position to the right of −884EP (No in step S45), the process returns to step S44 to determine whether or not the output value of the PW sensor 34 exceeds the threshold value VRS. If the PW sensor 34 has moved to a position to the right of −884EP (Yes in step S45), that is, even if the PW sensor 34 is moved to a position to the right of −884EP, the end of the optical recording disk D ( If the boundary between the optical recording disk D and the disk tray 7 cannot be detected, it is determined that there is some abnormality, the movement of the carriage 61 is stopped (step S46), and the procedure ends as an error. On the other hand, when the output value of the PW sensor 34 exceeds the threshold value VRS (Yes in step S44), that is, when the end of the optical recording disk D in the main scanning direction X is detected, the EP value at that position is detected. A value obtained by adding the correction value HR_XLD to the right end position MXR (step S47), and the movement of the carriage 61 is stopped (step S48). The correction value HR_XLD includes the disc tray 7 (or the hole 731 formed in the disc tray 7, the hole 732, or the outside of the disc tray 7) in the main scanning direction X, the optical recording disc D, the mark left 74, and the mark right. 75 is a correction value for a detection position shift when detecting a boundary with any one of 75.

  Subsequently, after the carriage 61 is moved until the detection position of the PW sensor 34 becomes −884EP (step S49), the carriage 61 is further moved from left to right (step S50), and the output value of the PW sensor 34 is changed. It is determined whether or not it has decreased below the threshold value VRS, and the position of the mark right 75 is detected (step S51). When the output value of the PW sensor 34 is equal to or greater than the threshold value VRS (No in step S51), that is, when the mark right 75 is not detected by the PW sensor 34, the PW sensor 34 is on the right side of -927EP. It is determined whether or not it has been moved to the position (outside of the disc tray 7) (step 52). If the PW sensor 34 has not moved to the position to the right of -927EP (No in step S52), the process returns to step S51 to continue detection of the mark right 75, and the output value of the PW sensor 34 is equal to the threshold value VRS. If the PW sensor 34 has moved to a position to the right of -927EP without decreasing below (Yes in step S52), the carriage 61 stops moving (step S53), and the procedure ends as an error. On the other hand, when the output value of the PW sensor 34 falls below the threshold value VRS (Yes in step S51), the carriage 61 continues to move from the left to the right (step S54), and the mark right 75 is displayed. It is determined whether or not the output value of the PW sensor 34 that has been detected and decreased below the threshold value VRS has exceeded the threshold value VRS (step S55), and the right end of the disc tray 7, that is, the mark right 75 is determined. The right end position is detected. When the output value of the PW sensor 34 is equal to or lower than the threshold value VRS (No in step S55), that is, when the PW sensor 34 has not detected the right end of the disc tray 7, the PW sensor 34 is- It is determined whether or not it has moved to the right position (outside of the disc tray 7) from 927EP (step 56). If the PW sensor 34 has not moved to the position to the right of -927EP (No in step S56), the process returns to step S55 to continue detection of the right end of the mark right 75, and the output value of the PW sensor 34 is If the PW sensor 34 moves to a position to the right of -927EP (outside of the disc tray 7) without exceeding the threshold value VRS (Yes in step S56), the carriage 61 stops moving (step S57), and an error occurs. The procedure is finished as follows. On the other hand, when the output value of the PW sensor 34 exceeds the threshold value VRS (Yes in step S55), that is, when the right end of the mark right 75 (the right end of the disc tray 7) is detected, the position is detected. The value obtained by adding the correction value HR_XLD to the EP value is set as the mark right position TXR (step S58), and the movement of the carriage 61 is stopped (step S59).

  Subsequently, the carriage 61 is moved until the detection position of the PW sensor 34 becomes −320EP (step S60), and during that time, it is detected whether or not the output value of the PW sensor 34 has decreased below the threshold value VRS (step S60). Step S61). If the output value of the PW sensor 34 has not decreased below the threshold value VRS (No in step S61), that is, if the optical recording disk D could not be detected, the optical recording disk mounting portion 72, it is determined that the optical recording disk D is not loaded, and the procedure ends as an error. When the carriage 61 is moved until the detection position of the PW sensor 34 becomes −320EP, if the output value of the PW sensor 34 has dropped below the threshold value VRS (Yes in step S61), that position The carriage 61 is moved from right to left (step S62), and it is determined whether or not the output value of the PW sensor 34 exceeds the threshold value VRS (step S63). If the output value of the PW sensor 34 is equal to or less than the threshold value VRS (No in step S63), it is subsequently determined whether or not the PW sensor 34 has moved to a position to the left of -64EP (step S64). If the PW sensor 34 has not moved to the position to the left of −64EP (No in step S64), the process returns to step S63 to determine whether or not the output value of the PW sensor 34 exceeds the threshold value VRS. If the PW sensor 34 has moved to a position to the left of -64EP (Yes in step S64), that is, even if the PW sensor 34 is moved to a position to the left of -64EP, the end of the optical recording disk D ( If the boundary between the optical recording disk D and the disk tray 7 cannot be detected, it is determined that there is some abnormality, the movement of the carriage 61 is stopped (step S65), and the procedure ends as an error. On the other hand, when the output value of the PW sensor 34 exceeds the threshold value VRS (Yes in step S63), that is, when the end of the optical recording disk D in the main scanning direction X is detected, the carriage 61 is moved. The process stops (step S66), and the value obtained by adding the correction value HR_XLD to the EP value at that position is set as the left end position MXL (step S67).

  Subsequently, after the carriage 61 is moved until the detection position of the PW sensor 34 becomes −64EP (step S68), the carriage 61 is further moved from right to left (step S69), and the output value of the PW sensor 34 is changed. It is determined whether or not it has decreased below the threshold value VRS, and the position of the mark left 74 is detected (step S70). If the output value of the PW sensor 34 is equal to or greater than the threshold value VRS (No in step S70), that is, if the left mark 74 is not detected by the PW sensor 34, the PW sensor 34 is to the left of -64EP. It is determined whether or not it has been moved to the position (outside of the disc tray 7) (step 71). If the PW sensor 34 has not moved to the position to the left of -64EP (No in step S71), the process returns to step S70 to continue detection of the left marker 74, and the output value of the PW sensor 34 is equal to the threshold value VRS. If the PW sensor 34 has moved to a position to the left of −64EP without decreasing below (Yes in step S71), the carriage 61 stops moving (step S72), and the procedure ends as an error. On the other hand, when the output value of the PW sensor 34 falls below the threshold value VRS (Yes in step S70), the carriage 61 continues to move from the right to the left (step S73), and the mark left 74 is displayed. It is determined whether or not the output value of the PW sensor 34 that has been detected and decreased below the threshold value VRS has exceeded the threshold value VRS (step S74), and the left end portion of the mark left 74 (the mark left 74 and the hole) 732). When the output value of the PW sensor 34 is equal to or lower than the threshold value VRS (No in step S74), that is, when the PW sensor 34 has not detected the left end portion of the mark left 74, the PW sensor 34 is at the reference position. It is determined whether or not it has moved to a position to the left of W (step 75). If the PW sensor 34 has not moved to the position to the left of the reference position W (No in step S75), the process returns to step S74 to continue detection of the left end of the mark left 74, and the output value of the PW sensor 34 is If the PW sensor 34 has moved to a position to the left of the reference position W without exceeding the threshold value VRS (Yes in step S75), the carriage 61 stops moving (step S76), and the procedure ends as an error. To do. On the other hand, when the output value of the PW sensor 34 exceeds the threshold value VRS (Yes in step S74), that is, when the left end of the mark left 74 (the boundary between the mark left 74 and the hole 732) is detected. A value obtained by adding the correction value HR_XLD to the EP value at that position is set as a mark position TXL (step S77), and the movement of the carriage 61 is stopped (step S78).

  Then, a value ½ of the value obtained by adding the mark position TXR to the mark position TXL is set as the center position TCX in the main scanning direction X of the optical recording disk D calculated from the mark position in the main scanning direction X (step S79). Further, the center position in the main scanning direction X of the optical recording disk D calculated from the end position in the main scanning direction X of the optical recording disk D, which is a half of the value obtained by adding the right end position MXR to the left end position MXL. MCX is set (step S80). Further, a value obtained by subtracting the right end position MXR from the left end position MXL is set as a detection width MX of the optical recording disk D in the main scanning direction X (step S81).

Here, returning to FIG. 7 again, step S5 and subsequent steps will be described.
The center position MCX of the optical recording disk D in the main scanning direction X calculated from the end position of the optical recording disk D in the X center setting sequence, and the mark left 74 and mark right 75 of the disk tray 7 in the same X center setting sequence. The center position TCX in the main scanning direction X of the optical recording disk D calculated from the detected position is compared, and it is determined whether or not the difference is larger than a certain difference (3EP) (step S5). If the difference is equal to or less than a certain difference (No in step S5), the center position MCX of the optical recording disk D in the main scanning direction X calculated from the end position of the optical recording disk D is used as the light in the main scanning direction X. The center position Xc of the recording disk D is set (step S6). On the other hand, if the difference is larger than a certain difference (Yes in step S5), it is considered that the label surface of the optical recording disk D is not in a normal state, and the detection positions of the mark left 74 and the mark right 75 of the disk tray 7 are detected. The center position TCX in the main scanning direction X of the optical recording disk D calculated from the above is set as the center position Xc of the optical recording disk D in the main scanning direction X (step S7). Thereby, even when the state of the label surface of the optical recording disk D is not normal, it is possible to prevent the recording execution area with respect to the label surface from being greatly shifted.

  Subsequently, it is determined whether or not the detection width MX of the optical recording disk D calculated in the X center setting sequence is equal to or larger than a predetermined size (500 EP corresponding to a diameter of 12 m) (step S8). When the detection width MX of the optical recording disk D is smaller than a predetermined size (500 EP corresponding to a diameter of 12 m) (No in step S8), the optical recording disk D having a diameter of 8 m is mounted on the disk tray 7. Therefore, it is determined whether or not the recording data to be executed is data corresponding to the optical recording disk D having a diameter of 8 m (step S9). If the recording data is not data corresponding to the optical recording disk D having a diameter of 8 m (No in step S9), that is, if the recording data is data corresponding to the optical recording disk D having a diameter of 12 m, the recording is executed as it is. If this happens, there is a possibility that the ink is ejected to the outside of the optical recording disk D having a diameter of 8 cm and the disk tray 7 is soiled with ink, so that the procedure is terminated as it is as a disk size error. In this embodiment, the diameter of the optical recording disk D is limited to 12 cm or 8 cm. However, the recording execution area can be flexibly set according to the calculated detection width MX of the optical recording disk D. It is. On the other hand, when the detection width MX of the optical recording disk D is equal to or larger than a predetermined size (Yes in step S8), or in step S9, the recording data is data corresponding to the optical recording disk D having a diameter of 8 m. In the case (No in step S9), the carriage 61 is moved to the recording start position (main scanning direction X) on the label surface of the optical recording disk D (step S10), and the disk tray 7 is moved to the recording start position (sub-scanning direction Y). (Step S11), and the procedure ends. The diameter of the optical recording disk D mounted on the optical recording disk mounting portion 72 can be calculated from the detection width MX of the optical recording disk D and the calculated center point position (Xc, Yc) of the optical recording disk D. it can. Then, a recording execution area is set based on the center position Xc of the optical recording disk D in the main scanning direction X, the center position Yc of the optical recording disk D in the sub-scanning direction Y, and the calculated diameter of the optical recording disk D. Thus, an accurate recording execution area can be set according to the center position CP and the size of the optical recording disk D.

  In this way, it is possible to detect the exact center point position CP of the optical recording disk D mounted on the disk tray 7 without causing the disk tray 7 to move outside the ink jet recording apparatus 50. Further, since the end position of the optical recording disk D in the sub-scanning direction Y is not detected when determining the center position Yc of the optical recording disk D in the sub-scanning direction Y, the carriage 61 (main The both ends of the conventional sub-scanning direction Y are detected from the transport distance (scan distance) of the disc tray 7 by the transport drive roller 53 (sub-scan drive means) whose scanning speed is much slower than the scanning drive means). Compared to the method, it can be greatly shortened. Accordingly, the accurate center point position CP of the optical recording disk D can be detected in a shorter time than conventional.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  The present invention can be used when detecting the center position of an optical recording disk in an ink jet recording apparatus.

1 is a perspective view of an ink jet recording apparatus. FIG. 3 is a perspective view of the ink jet recording apparatus with a main body cover removed. 1 is a schematic side sectional view of an ink jet recording apparatus. It is a block diagram of the control part which performs various controls of an ink jet recording device. It is a perspective view of a disk tray. It is a top view of a disk tray. The flowchart which showed the procedure which detects the center position of an optical recording disc. It is the flowchart which showed the Y center setting sequence. It is the flowchart which showed X center setting sequence. It is the flowchart which showed X center setting sequence. It is the flowchart which showed X center setting sequence.

Explanation of symbols

4 Memory slot cover, 7 Disc tray, 8 Paper cassette, 16 Ink cartridge, 17 Ink tube, 34 PW sensor, 50 Inkjet recording device, 51 Carriage guide shaft, 52 Platen, 53 Transport drive roller, 54 Transport driven roller, 55 Discharge drive roller, 56 Discharge driven roller, 57 PF motor, 61 Carriage, 62 Recording head, 63 CR motor, 83 Paper feed roller, 72 Optical recording disk mounting part, 73 Reference mark, 74 mark left, 75 mark right , 101 ROM, 102 RAM, 103 interface unit, 104 MPU, 105 DC unit, 106 PF motor driver, 107 CR motor driver, 108 head driver, 109 nonvolatile memory, D optical recording disk, P recording paper, X Main scanning direction, Y Sub scanning direction

Claims (12)

The main scanning drive means for reciprocating the recording head for ejecting ink onto the recording material in the main scanning direction, and the label surface of the optical recording disk mounted on the optical recording disk mounting portion to which the optical recording disk can be attached and detached are An internal disc tray that is movable in the sub-scanning direction so as to be a recording surface by the scanning drive means, and the disc tray is transported in the sub-scanning direction by a predetermined transport amount, and the optical recording is performed on the disc tray. A sub-scanning drive unit having a configuration capable of extending the disk tray to a position where the optical recording disk mounting unit is exposed to the outside when the disk is attached and detached; and an end of the optical recording disk; A main run of the optical recording disc mounted on the disc tray by reciprocating a detector capable of detecting the boundary with the disc tray in a non-contact manner in the main scanning direction. An optical recording disk end position detecting means for detecting the position of both ends in the direction, the main scanning driving means, the sub-scanning driving means, and the optical recording disk end position detecting means to control the label of the optical recording disk A recording apparatus comprising recording control means for performing recording on a surface,
On the disk tray, the optical recording disk having a reference mark that can be detected by the detector serving as a reference for the position of the disk tray in the sub-scanning direction is the same as the surface on which the optical recording disk mounting portion is formed. An interval in the sub-scanning direction between the reference mark and the center point position of the optical recording disk in a state of being mounted on the optical recording disk mounting portion is formed in a region other than the mounting portion as a predetermined value α, It is set based on the optical recording disk mounting portion and the formation position of the reference mark,
The recording control means preliminarily places main scanning lines on the disc tray that can be scanned by the optical recording disc end position detecting means on the optical recording disc in a state where the disc tray does not protrude to the outside of the recording apparatus. Set,
The disc tray is transported to a position where the main scanning line can be scanned by the detector, and both end positions of the optical recording disc on the main scanning line are detected by the optical recording disc end position detecting means, The midpoint on the main scanning line of the both end positions of the detected optical recording disk is set as the center position in the main scanning direction of the optical recording disk, and the position from the position where the reference mark is detected to the center point position of the optical recording disk Calculating the center point position of the optical recording disk with the position moved in the sub-scanning direction by the length of the predetermined value α as the center position in the sub-scanning direction of the optical recording disk;
A recording apparatus comprising: setting a recording execution area on the label surface of the optical recording disk based on the calculated center point position of the optical recording disk and executing recording on the label surface of the optical recording disk . The recording apparatus according to claim 1, wherein the predetermined value α is set to an optimum value for each recording apparatus. The recording apparatus according to claim 1, wherein the recording apparatus has a configuration capable of correcting the value of the predetermined value α. 4. The disc tray according to claim 1, wherein the disc tray is disposed on the same main scanning line in a region other than the optical recording disc mounting portion on the same surface as the surface on which the optical recording disc mounting portion is formed. Two center point position detection marks formed so that the midpoint position is the center point position in the main scanning direction of the optical recording disk in a state of being mounted on the optical recording disk mounting portion,
The recording control means conveys the disc tray to a position where the two center point position detection marks can be scanned by the detector, and the optical recording disc end position detecting means detects the two center point positions. The position of the detection mark is detected, and the optical recording calculated from the center position of the optical recording disk in the main scanning direction calculated from the positions of both ends of the optical recording disk and the positions of the two center point position detection marks When the difference between the center position in the main scanning direction of the disk is greater than a certain value, the center position in the main scanning direction of the optical recording disk calculated from the positions of the two center point position detection marks is used. A recording execution area on the label surface of the optical recording disk. 5. The optical recording disk according to claim 1, wherein the recording control unit is configured to calculate a distance between both end positions of the optical recording disk detected by the optical recording disk end position detecting unit in a main scanning direction. And a recording execution area on the label surface of the optical recording disk is set based on the calculated diameter of the optical recording disk. 6. The sub-scanning driving unit according to claim 1, wherein the sub-scanning driving unit presses against a conveyance driving roller that rotates in a sub-scanning direction when a driving force of a driving force source is transmitted, and an outer peripheral surface of the conveyance driving roller. And a driven roller that is supported so as to be driven to rotate in the sub-scanning direction. The disk drive is rotated by the rotation of the transfer driving roller while the disk tray is sandwiched between the transfer driving roller and the transfer driven roller. The transport drive roller, the transport driven roller, and the detector are configured to be transported in a scanning direction, and the optical recording disk is mounted on the disk tray when the detector scans the main scanning line. A recording apparatus, wherein the recording apparatus is disposed so as to have a positional relationship for sandwiching the portions. 7. The optical recording disk according to claim 1, wherein the main scanning drive unit has a configuration in which the recording head is mounted on a carriage that is pivotally supported so as to reciprocate in the main scanning direction. The end position detecting means has a configuration in which the detector is disposed in the carriage and reciprocates in the main scanning direction by reciprocating the carriage in the main scanning direction. Characteristic recording device. The main scanning drive means for reciprocating the recording head for ejecting ink onto the recording material in the main scanning direction, and the label surface of the optical recording disk mounted on the optical recording disk mounting portion to which the optical recording disk can be attached and detached are An internal disc tray that is movable in the sub-scanning direction so as to be a recording surface by the scanning drive means, and the disc tray is transported in the sub-scanning direction by a predetermined transport amount, and the optical recording is performed on the disc tray. A sub-scanning drive unit having a configuration capable of extending the disk tray to a position where the optical recording disk mounting unit is exposed to the outside when the disk is attached and detached; and an end of the optical recording disk; A main run of the optical recording disc mounted on the disc tray by reciprocating a detector capable of detecting the boundary with the disc tray in a non-contact manner in the main scanning direction. In a recording apparatus comprising optical recording disk end position detecting means for detecting both end positions in the direction, the main scanning driving means, the sub scanning driving means, and the optical recording disk end position detecting means are controlled. A recording control program for causing a computer to execute control for recording on a label surface of the optical recording disk,
The optical recording on the same surface as the surface on which the optical recording disk mounting portion is formed has a reference mark that can be detected by the detector serving as a reference for the position of the disk tray in the sub-scanning direction. An interval in the sub-scanning direction between the reference mark and the center point position of the optical recording disk in a state of being mounted on the optical recording disk mounting portion is formed in an area other than the disk mounting portion as a default value α, It is set based on the formation position of the optical recording disk mounting portion and the reference mark,
Main scanning lines that can be scanned by the optical recording disk end position detecting means on the optical recording disk in a state where the disk tray does not protrude outside the recording apparatus are set in advance on the disk tray,
The disc tray is transported to a position where the main scanning line can be scanned by the detector, and both end positions of the optical recording disc on the main scanning line are detected by the optical recording disc end position detecting means, The midpoint on the main scanning line of the both end positions of the detected optical recording disk is set as the center position in the main scanning direction of the optical recording disk, and the position from the position where the reference mark is detected to the center point position of the optical recording disk Calculating the center point position of the optical recording disk with the position moved in the sub-scanning direction by the length of the predetermined value α as the center position in the sub-scanning direction of the optical recording disk;
And setting a recording execution area on the label surface of the optical recording disk based on the calculated center point position of the optical recording disk, and executing recording on the label surface of the optical recording disk. A recording control program characterized by that. 9. The recording control program according to claim 8, wherein the predetermined value α is set to an optimum value for each recording apparatus in a manufacturing process. The recording control program according to claim 8, further comprising a procedure for correcting the value of the predetermined value α. 11. The disc tray according to claim 8, wherein the disc tray is arranged on the same main scanning line in a region other than the optical recording disc mounting portion on the same surface as the surface on which the optical recording disc mounting portion is formed. Two center point position detection marks formed so that the midpoint position is the center point position in the main scanning direction of the optical recording disk in a state of being mounted on the optical recording disk mounting portion,
The disk tray is transported to a position where the two center point position detection marks can be scanned by the detector, and the positions of the two center point position detection marks are detected by the optical recording disk end position detection means. Steps to detect,
A center position in the main scanning direction of the optical recording disk calculated from the positions of both ends of the optical recording disk, and a center position in the main scanning direction of the optical recording disk calculated from the positions of the two center point position detection marks. If there is a difference greater than a certain level, the label surface of the optical recording disk is moved to the label surface of the optical recording disk based on the center position in the main scanning direction of the optical recording disk calculated from the positions of the two center point position detection marks. And a recording control program for setting the recording execution area. The diameter of the optical recording disk according to any one of claims 8 to 11, wherein a diameter of the optical recording disk is calculated from an interval in a main scanning direction between both end positions of the optical recording disk detected by the optical recording disk end position detection unit. A recording control program comprising a procedure for setting a recording execution area on a label surface of the optical recording disk based on the calculated diameter of the optical recording disk.

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