JP2009259319A - Disk recording and reproducing apparatus and method for detecting attached ink mist for disk recording and reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk recording and reproducing apparatus capable of previously detecting contamination of the inside of the apparatus with ink, and to provide a method for detecting attached ink mist for the disk recording and reproducing apparatus. <P>SOLUTION: The apparatus comprises a rotation drive section 536 in which a disk-like medium is placed attachably and detachably and which rotates the disk-like medium; a movable printing head 550 which discharges ink droplets to the printing surface of the disk-like medium rotated by the rotation drive section; and an ink detection section 582 to which ink mist of a smaller volume than the ink droplets discharged from the printing head and scattered in the vicinity of the disk-like medium is attached and which detects the attached state of the ink mist. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a disk recording / reproducing apparatus and a method for detecting attached ink mist in a disk recording / reproducing apparatus.

  As a typical example of a disk recording / reproducing apparatus for recording / reproducing information using a disk-shaped recording medium, an optical disk apparatus using an optical disk as a recording medium is generally known. An optical disc apparatus is an apparatus that irradiates an optical disc with laser light to write data on the optical disc or read data recorded on the optical disc. The optical disk device can be classified into a tray system and a slot-in system according to the optical disk loading / unloading method.

  The tray-type optical disk apparatus has a tray configured to be able to be taken in and out of the apparatus housing. The optical disk is placed on a tray and is transported to a disk mounting position where a recording / reproducing operation is performed in the apparatus housing and a disk ejection position outside the apparatus housing.

  On the other hand, the slot-in type optical disk apparatus is provided with a disk entrance / exit in the apparatus housing, and a disk transport mechanism for transporting the optical disk sandwiched inside the disk entrance / exit. In the slot-in type optical disk apparatus, when an optical disk is inserted into the disk entrance / exit, the disk transport mechanism transports the optical disk to the disk mounting position with the optical disk interposed therebetween. When the eject button is operated to select the disc ejection operation, the disc transport mechanism holds the optical disc and transports it from the disc loading position to the disc ejection position.

  There has been a strong demand for optical disk devices such as an increase in recording capacity and high-density recording, and in recent years, for example, a Blu-ray disc capable of high-density recording has been provided. The basic configuration of an optical disc apparatus using a Blu-ray disc is the same as that of a conventional optical disc apparatus (DVD or the like). An optical disk device using a Blu-ray disc increases the recording capacity from 5 times to more than 10 times compared to DVD, etc. by shortening the wavelength of the light source or increasing the numerical aperture (NA) of the lens. is doing.

  In such an optical disk apparatus capable of recording at high density, the amount of information recorded on one optical disk increases dramatically. Furthermore, when the number of recorded optical disks increases, the amount of information is large and it becomes difficult to manage a plurality of optical disks.

  In Patent Document 1, as a management method of an optical disc, there is a method of recording the content of information recorded on an optical disc, for example, on the information recording surface of the optical disc, using the laser beam of an optical pickup, outside the information recording portion. It is disclosed.

On the other hand, as a method for writing the information content recorded on the optical disk on the label surface opposite to the information recording surface of the optical disk, a printing device having an inkjet print head is mounted on the optical disk device, and the information content is recorded by this printing device. It has also been proposed to write.
For example, Patent Document 2 discloses an optical disc apparatus in which an inkjet head is mounted on an optical disc apparatus and label printing is performed on a rotating optical disc. Japanese Patent Application Laid-Open No. H10-228561 discloses an optical disc apparatus that incorporates a printing apparatus in which a print head can move in the radial direction of the disc.

Japanese Patent Laid-Open No. 2004-280953 Special table 2002-512140 gazette Japanese Patent No. 3341572

  However, in an optical disc apparatus equipped with a printing device that prints characters or the like on the label surface of the optical disc, the ink mist that does not reach the label surface among the ink droplets ejected during printing and diffuses in the optical disc apparatus There was a problem of contaminating the inside.

  When the ink mist adheres to the objective lens of the optical pickup device, the transmittance of the objective lens through which the laser beam is transmitted is lowered, and there is a problem that the recording / reproducing process in the optical disc apparatus cannot be executed. Further, when the ink mist adheres to the electric circuit inside the optical disk apparatus, there are problems that a short circuit of the electric circuit, malfunction of the optical disk apparatus, malfunction, etc. occur.

  Furthermore, if the tray on which the optical disk is placed is contaminated by ink mist, the tray is a component that can be visually recognized by the user, which may cause the user to misunderstand that the function of the optical disk device has failed. There was sex. Further, if the tray is contaminated with ink mist, lint, dust, etc. are likely to adhere. For this reason, when the tray is inserted into the optical disc apparatus, lint, dust and the like are taken into the apparatus at the same time, and there is a risk of causing a failure in the components inside the optical disc apparatus.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a new and improved disc recording / reproducing capable of detecting in advance contamination by ink in the apparatus. It is an object of the present invention to provide an ink mist detection method for an apparatus and a disk recording / reproducing apparatus.

  In order to solve the above problems, according to an aspect of the present invention, a disk-shaped medium is detachably mounted, a rotation driving unit that rotates the disk-shaped medium, and a disk-shaped medium rotated by the rotation driving unit. A movable print head that ejects ink droplets onto the printing surface, and an ink detection unit that detects the state of ink mist adhesion by a small volume of ink mist adhering to the ink droplets ejected from the print head and diffused near the disc-shaped medium A disc recording / reproducing apparatus is provided.

The objective lens for irradiating the disk-shaped medium with light is further provided, and the ink detection unit is located downstream of the print head in the rotational direction of the disk-shaped medium and upstream of the objective lens in the rotational direction of the disk-shaped medium. May be provided.
The disk-shaped medium may further include an objective lens that irradiates the first light, and the ink detection unit may be provided in the vicinity of the objective lens.

  It may further include a concave disk tray on which the disk-shaped medium can be placed, and the ink detection unit may be provided on the disk tray.

The ink detection unit may have a detection window formed of a transparent material or a translucent material.
The ink detection unit further includes a light irradiation unit that irradiates the detection window with the second light, and a light detection unit that detects the second light reflected by the detection window or the second light transmitted through the detection window. May be.

  You may further have the adhesion state notification part which notifies the adhesion state of an ink mist according to the adhesion state of the ink mist which the said ink detection part detected.

An ink removing unit that removes ink mist adhering to at least one of the objective lens and the detection window according to the ink mist adhering state detected by the ink detecting unit may be further included.
The ink removing unit may be formed of a material that adsorbs ink.

  Ejecting ink droplets onto the printed surface of the rotated disk-shaped medium and smaller than the ink droplets ejected together with the ink droplets and diffused near the disk-shaped medium in the vicinity of the objective lens for irradiating the disk-shaped medium with the first light. And a method for detecting an adhering ink mist of a disk recording / reproducing apparatus including a step of detecting an adhering state of a capacity ink mist.

  The step of detecting the adhesion state of the ink mist includes irradiating the detection window formed of a transparent material or a translucent material to which the ink mist adheres with the second light, the second light reflected by the detection window, or Detecting the second light transmitted through the detection window.

  The method may further include a step of removing the ink mist adhering to at least one of the objective lens and the detection window according to the adhering state of the ink mist.

  According to the present invention, contamination due to ink in the apparatus can be detected in advance.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(First embodiment)
First, the optical disc apparatus 100 according to the first embodiment of the present invention will be described. FIG. 1 is a perspective view showing an optical disc apparatus according to the present embodiment. FIG. 2 is a perspective view showing the optical disk apparatus according to this embodiment, and shows a state in which the top plate of the housing is removed. FIG. 3 is a plan view showing the optical disk apparatus according to the present embodiment, and shows a state in which the top plate of the housing is removed.

  The optical disc apparatus 100 according to the first embodiment of the present invention newly records (writes) an information signal on the information recording surface of the optical disc 5 that is an example of a disc-shaped recording medium that is a print target, An information signal recorded in advance can be reproduced (read). The disc-shaped recording medium is, for example, an optical disc such as a CD (Compact Disc), a CD-R (Recordable), a DVD, a DVD-RW (Rewritable), a Blu-ray disc (BD), a magneto-optical disc, a magnetic disc, or the like. .

  The optical disc apparatus 100 according to the present embodiment is a recording / reproducing apparatus with a tray-type printing function capable of printing visible information such as characters, symbols, photographs, pictures, and patterns on the label surface of the optical disc 5.

  The disc recording / reproducing apparatus of the present invention is not limited to an optical disc apparatus capable of both recording and reproducing information, but only a disc recording apparatus capable of only recording information signals and reproducing information signals. The present invention can be applied to possible disc playback devices. Further, the disk-shaped recording medium is not limited to an optical disk that records and reproduces information signals using laser light, but an optical disk that uses near-field light, a magneto-optical disk that uses light and magnetism, and only magnetism. Various disk-shaped recording media whose outer shape forms a disk shape, such as a magnetic disk using a disk, can be used as the recording medium.

  Next, the configuration of the optical disc apparatus according to the present embodiment will be described with reference to FIGS.

  As shown in FIGS. 1 to 3, the optical disc apparatus 100 includes a casing 103 formed of a hollow container, an apparatus main body accommodated in the casing 103, an input device such as a remote controller (not shown), and the like. It is configured. The optical disk device 100 can be electrically connected to an external device such as an image display device or a sound output device (not shown) so that information read from the information recording unit of the optical disk 5 can be displayed as an image or sound. It has become. Examples of the image display device include a liquid crystal display device, an organic EL display device, a plasma display device, and the like. Moreover, as an audio output device, a speaker apparatus etc. can be mention | raise | lifted, for example.

  The housing 103 of the optical disc apparatus 100 includes a rectangular base plate 104, an upper surface plate 105 covering the upper surface of the base plate 104, a front plate 106 covering the front surface, and a rear plate 107 covering the back surface. A hollow container is constructed. Side surfaces 104a and 104a are provided on both sides of the base plate 104 in the width direction of the housing 103, respectively. Each side surface portion 104 a extends at a predetermined height in the longitudinal direction of the base plate 104. The upper surface plate 105 includes a rectangular upper surface portion 105a and left and right side surface portions 105b and 105b that are formed continuously on both sides of the upper surface portion 105a in the width direction and cover the side surfaces. The upper surface plate 105 is attached to the upper portion of the base plate 104, and is attached by fixing the side surface portions 105b and 105b to the side surface portions 104a and 104a with fixing screws (not shown). A cylindrical front opening formed by the upper surface plate 105 and the base plate 104 is closed by a front plate 106, and a rear opening is closed by a back plate 107. The front plate 106 and the back plate 107 are screwed to the base plate 104 and the top plate 105 with fixing screws (not shown).

  A disc doorway 111 extending in the lateral direction is provided at a substantially central portion in the height direction of the front plate 106. A disc tray 112 is mounted in the disc entrance 111 so as to be able to put in and out. The disk tray 112 is a housing in which the optical disk 5 placed in the disk storage unit 113 is read out from the housing 103 and the information signal is recorded (written) and reproduced (read out) from the optical disk 5. It is transported selectively to the disk mounting position in the body 103. The disc tray 112 includes a tray main body 114 made of a plate-like member having a slightly larger planar rectangle than the optical disc 5 and a shielding plate 115 fixed to one end in the longitudinal direction of the tray main body 114. On the upper surface, which is one flat surface of the tray main body 114, a disk storage portion 113 formed of a circular recess for storing the optical disk 5 is provided.

  In addition, the tray body 114 is provided with a notch 116 for avoiding contact with a disk mounting portion described later. The notch 116 is formed by being greatly cut out from one short side of the disc tray 112 to the center of the disc storage portion 113. A shielding plate 115 is integrally provided on the short side of the tray body 114 opposite to the notch 116. The shielding plate 115 functions as a lid that closes the disk entrance 111 when the disk tray 112 moves to the disk mounting position. The shielding plate 115 is a horizontally long rectangle corresponding to the shape of the disc entrance 111 and is detachably fitted to the disc entrance 111.

  The apparatus main body of the optical disk apparatus 100 includes a disk drive device 109, a printing device, a control device, and the like. The disc drive device 109 writes information signals to the information recording unit of the provided optical disc 5 to newly record information, or reads and reproduces information recorded in advance in the information recording unit. is there. In addition, the printing apparatus relates to information recorded in the information recording unit in advance or information newly recorded on the label surface of the optical disc 5 to be provided or a label sheet attached to the label surface. Items are printed and displayed as visible information such as letters, numbers, photographs, pictures and patterns. Then, the control device drives and controls the disk drive device 109 and the printing device, and other devices as necessary, and causes the disk drive device 109 to execute predetermined recording / reproducing operations and other operations, or causes the printing device to perform predetermined control. The printing operation and other operations are executed.

  4 is a perspective view showing the optical disk apparatus according to the present embodiment, and shows a state in which the printing apparatus is detached from the optical disk apparatus shown in FIG. In the present embodiment, a disk drive device 109 is disposed below the housing 103 and a printing device is disposed above the housing 103. In order to realize this arrangement, a chassis plate (not shown) that partitions the space portion in the vertical direction is arranged inside the housing 103. The chassis plate is formed of a rectangular plate that is slightly smaller than the base plate 104, and a rectangular opening hole (not shown) extending in the longitudinal direction with a predetermined width passes through the front and back surfaces thereof. Is provided. A printing device is mounted on the upper surface, which is one surface of the chassis plate, and the disk drive device 109 is disposed with a predetermined gap between the lower surface, which is the other surface.

  Since the disk drive device 109 has the same configuration as that generally used in this type of optical disk device, the configuration and the like will be briefly described here. The disk drive device 109 has a disk rotating mechanism having a disk mounting part 120 (see FIG. 3) on which the optical disk 5 is detachably mounted, and moves the disk mounting part 120 up and down to chuck and release the optical disk 5. A mounting-part raising / lowering mechanism that performs recording, an optical pickup 123 that is an example of a pickup device that records and reproduces information signals with respect to the optical disc 5, a pickup moving mechanism that moves the optical pickup 123 in the radial direction of the optical disc 5, and A drive control circuit for driving and controlling the mechanism and the like is provided.

  The disk rotation mechanism is composed of, for example, a spindle motor using a stepping motor or a DC servo motor, and a turntable fixed to the rotation shaft of the spindle motor. The turntable constitutes a disk mounting portion 120 to which the optical disk 5 is detachably mounted. The stepping motor to which the turntable is attached is disposed so as to be positioned at a substantially central portion of the disc storage portion 113 when the disc tray 112 is conveyed to the disc mounting position. The turntable includes a disc fitting portion that is detachably fitted into the center hole of the optical disc 5 and a disc placement portion that supports the periphery of the center hole.

  The mounting unit elevating mechanism mounts or releases the optical disk 5 on the turntable by moving the disk rotating mechanism up and down at the disk mounting position. The mounting portion lifting mechanism includes, for example, a motor base on which a spindle motor is mounted and supported swingably on the base plate 104 of the housing 103, a cam mechanism for swinging the motor base, and the cam mechanism. It is constituted by an electric motor or the like that moves the spindle motor up and down. A chucking plate 127 is disposed above the spindle motor. The chucking plate 127 is used to hold the optical disk 5 lifted by the lifting / lowering operation of the spindle motor from above by being attracted by a magnet built in the turntable. By sandwiching the optical disk 5 between the chucking plate and the turntable, the optical disk 5 is prevented from slipping out of the turntable or sliding on the turntable.

  The chucking plate 127 is rotatably supported by a plate support plate 128 fixed to the upper end edge of the side surface portion 104 a of the base plate 104. The plate support plate 128 is made of a rectangular plate-like member, and a chucking plate 127 is rotatably supported on one side in the longitudinal direction. The plate support plate 128 is attached in a cantilever manner by fixing the other side in the longitudinal direction to the upper end edge of the side surface portion 104 a of the base plate 104. The plate support plate 128 is supported by the auxiliary plate 129 and is supported so as not to be bent. The position of the chucking plate 127 supported by the plate support plate 128 is a disk mounting position where information signals are recorded (written) and reproduced (read) by the optical pickup 123 with respect to the optical disk 5.

  The disk tray 112 can be transported by the tray transport mechanism between the disk mounting position and the disk ejection position outside the housing 103. Since the tray transport mechanism has the same configuration as that generally used in this type of optical disc apparatus, the configuration and the like will be briefly described here. The tray transport mechanism includes, for example, a rack portion provided on the disk tray 112, a pinion engaged with the rack portion, an electric motor that rotationally drives the pinion, and the like. By rotating the pinion by driving the electric motor, the rotational force is transmitted to the rack portion. As a result, the disc tray 112 is conveyed from the disc loading position to the disc ejection position or from the disc ejection position to the disc loading position according to the rotation direction of the electric motor.

  During the operation of the tray transport mechanism, the optical pickup 123 of the disk drive device 109, particularly the pickup lens that faces the information recording section of the optical disk 5 and the vicinity thereof enter the notch 116 of the disk tray 112. Then, when the optical disk 5 placed on the disk storage portion 113 of the disk tray 112 is mounted on the turntable and lifted up by a predetermined amount, the optical pickup 123 enters the lower side of the optical disk 5. As a result, the information signal can be written to and read from the information recording unit of the optical disk 5 by the optical pickup 123. 2 and 4 is an eject button for inserting or ejecting the tray transport mechanism.

  Then, when the disc tray 112 is conveyed to the disc mounting position, the spindle motor is moved upward by raising the motor base by the mounting portion lifting mechanism. At this time, the disc fitting portion of the turntable is fitted into the center hole of the optical disc 5 and the optical disc 5 is lifted from the disc storage portion 113 by a predetermined distance. The chucking plate is attracted by the magnet built in the turntable, and the optical disk 5 is sandwiched between the chucking plate and the turntable. Further, by moving the mounting portion elevating mechanism in the reverse direction to lower the motor base, the disc fitting portion of the turntable comes out downward from the center hole of the optical disc 5. As a result, the optical disc 5 comes out of the turntable and is placed on the disc storage portion 113.

  The optical pickup 123 includes, for example, a photodetector, an objective lens, and a biaxial actuator that causes the objective lens to face the information recording unit of the optical disc 5. The optical detector of the optical pickup 123 includes a semiconductor laser serving as a light source that emits a light beam, a light receiving element that receives a return light beam, and the like. The optical pickup 123 emits a light beam from a semiconductor laser, condenses the light beam by an objective lens, irradiates the information recording unit of the optical disc 5, and returns a return light beam reflected by the information recording unit. Light is received by a photodetector. Thereby, the optical pickup 123 can record (write) an information signal in the information recording unit or reproduce (read) an information signal recorded in advance in the information recording unit.

  The optical pickup 123 is mounted on a slide member 126 and is moved integrally with the slide member 126. Further, two guide shafts (not shown) are slidably inserted into the slide member 126 so as to be parallel to each other. The two guide shafts are disposed substantially parallel to the main surface forming the front surface of the information recording unit of the optical disc 5 and extend in the moving direction of the disc tray 112. A slide member 126 slidably held on the two guide shafts is movable in the radial direction of the optical disc 5 by a pickup moving mechanism.

  As the pickup moving mechanism, for example, a feed screw mechanism composed of a combination of a feed screw and a feed nut can be applied. However, the pickup moving mechanism is not limited to the feed screw mechanism, and for example, a rack and pinion mechanism, a belt feeding mechanism, a wire feeding mechanism, and other mechanisms can be applied. When the slide member 126 moved by the pickup moving mechanism moves, information signal recording and reproduction operations are performed on the information recording unit of the optical disc 5 by the optical pickup 123.

  2 and 3, the printing apparatus of the optical disc apparatus 100 includes a print head 151 in which an ink tank is accommodated, a head moving mechanism 132 that moves the print head 151 along the printing surface of the optical disc 5, and A distance detection unit (not shown) that detects the distance between the print head 151 and the printing surface, a cleaning mechanism (not shown) that cleans detection elements and the like of the distance detection unit, and these print heads 151 And a print control circuit (not shown) for controlling operations of the head moving mechanism 132, the distance detection unit, the cleaning mechanism, and the like.

  The print head 151 is, for example, an inkjet print head 151 used for label printing, and has a system in which an ink tank unit and an ink discharge unit are integrally formed.

  The print head 151 includes one hollow head casing, and one color (for example, black) or two or more colors (for example, three colors of magenta, cyan, and yellow) are provided in the head casing. ) And an ink discharge mechanism (not shown) that discharges each color individually from the nozzles. The head housing is configured by providing a cuboid bulging portion (not shown) in approximately half of the longitudinal direction of one surface of the cuboid. An ink discharge portion 137 for discharging ink is provided at a substantially central portion of the bulge portion. The ink ejection unit 137 is provided with nozzles having a large number of fine diameter holes (several hundreds of holes having a diameter of several μ to several tens of μ), and these nozzles correspond to the number of colors used. Are arranged as the same number of columns. For example, in the case of a print head that uses three colors of magenta, cyan, and yellow, three rows of nozzles are provided.

  The print head 151 having such a configuration is configured to be movable along the print surface of the optical disc 5 by the head moving mechanism 132. The head moving mechanism 132 includes a head holder 152 that holds the print head 151, a head slider 141 that movably supports the head holder 152, and two head guide shafts 142 that movably support the head slider 141, 144, two guide bearings 140A and 140B for fixing and supporting the two head guide shafts 142 and 144, a feed screw shaft 161 and a feed nut 162 for moving the print head 151, and a feed screw shaft 161. A head feed motor 163 that rotates and the like is provided.

  The head holder 152 is configured as a member having a rectangular frame shape into which the print head 151 is fitted. When the print head 151 is assembled, the ink ejection unit 137 penetrates the head holder 152 and protrudes downward from the lower surface which is one surface thereof. On the lower surface of the head holder 152, there is provided a gate-shaped mounting bracket formed in a U shape and projecting downward.

  Two distance detection sensors, ie, a first distance detection sensor and a second distance detection sensor, which are an example of a distance detection section, are arranged side by side and fixed at a substantially central portion of the lower surface of the mounting bracket. The first and second distance detection sensors detect the distance between the surface of the ink ejection unit 137 of the print head 151 and the printing surface of the optical disk 5 that is mounted on the disk mounting unit 120 and rotated. . The first and second distance detection sensors may be any sensors as long as they can detect the distance S between the ink ejection unit 137 and the printing surface of the optical disc 5. A photo interrupter is preferred.

  A photo interrupter is an optical sensor in which a light emitting diode (LED) and a photodiode are set, and infrared rays are mainly used. Photointerrupters include a reflection type and a transmission type, and a reflection type can be used in the present invention. The reflection type photo interrupter can detect the distance from the object with high accuracy by emitting light from the LED and detecting the reflected light or the like with a photodiode to examine the reflectance of the light of the object. As a specific example of this reflection type photo interrupter, for example, a reflection type photo interrupter SG-105 manufactured by KODENSHI CORPORATION can be raised. In the reflective photo interrupter SG-105, the light emitting element and the light receiving element are arranged on the same plane, and the distance to the object can be detected by the reflected light of the detected object.

  The two distance detection sensors are arranged side by side on the inner side in the radial direction of the optical disc 5 with respect to the ink ejection unit 137 of the print head 151 and upstream in the rotation direction of the optical disc 5. The reason why these two distance detection sensors are arranged on the upstream side in the rotation direction of the optical disk 5 is that a part of the ink ejected from the ink ejection unit 137 becomes mist and floats in the air. This is to make it difficult to adhere to the detection unit. In the present embodiment, the two distance detection sensors are arranged on the extension line of the substantially central portion of the ink ejection unit 137 and on the rotation center side of the optical disc 5.

  The printing surface of the optical disk 5 is a label surface 5 a that forms one surface of the optical disk 5. When a label sheet is affixed to the label surface 5a of the optical disc 5, the surface of the affixed label sheet becomes the printing surface. The head holder 152 combined with the print head 151 is supported by the head slider 141 so as to be relatively movable.

  The optical disk 5 is mounted on a turntable (not shown) of a disk rotation mechanism of the disk drive device 109 disposed on the opposite side of the chassis plate, and an optical pickup 123 is attached to the optical disk 5 with respect to the turntable. It is possible to approach and leave in a direction perpendicular to the surface direction which is the main surface.

  The head slider 141 is disposed at a predetermined interval in the left-right direction with the front member 141A and the rear member 141B disposed at a predetermined interval in the front-rear direction, which is the longitudinal direction of the print head 151, and the front member. 141A and left and right connecting members that connect the rear member 141B. The front side member 141A and the rear side member 141B are raised upward at a predetermined interval in the left-right direction intersecting the longitudinal direction. Then, the first bearing portion 143a, 143a projecting sideways is provided at the leading end on one rising side, and the second projecting side projecting on the opposite side is provided at the leading end on the other rising side. Bearing portions 143b and 143b are provided.

  The first bearing portions 143a and 143a are each provided with a first bearing hole, and the two first bearing holes are set on the same axis. Similarly, the second bearing portions 143b and 143b are each provided with a second bearing hole, and the two second bearing holes are also set on the same axis. Then, bearing members are mounted in the first bearing hole and the second bearing hole, respectively, and are fixed by fixing means such as press fitting. Two head guide shafts 142 and 144 are slidably inserted into these bearing members.

  A print head 151 is movably supported by two head guide shafts 142 and 144. As shown in FIG. 5, the first head guide shaft 142 is slidably inserted into the respective bearing members of the two bearing holes of the first bearing portions 143a and 143a provided on one side of the head slider 141. Yes. The second guide shaft 43B is slidably inserted into the respective bearing members of the two bearing holes of the second bearing portions 143b and 143b provided on the other side of the head slider 141.

  The two head guide shafts 142 and 144 extend in the longitudinal direction of the opening hole provided in the chassis plate, and are arranged in parallel to each other while maintaining a predetermined interval. The two head guide shafts 142 and 144 are fixed by two guide bearings 140A and 140B and supported at both ends. The two guide bearings 140A and 140B are arranged at both ends in the longitudinal direction of the opening hole of the chassis plate, and are respectively fixed to the chassis plate by fixing screws.

  A feed screw shaft 161 is disposed outside the one head guide shaft 144 at a predetermined interval. The feed screw shaft 161 is set in parallel with the two head guide shafts 142 and 144, and is connected to the rotary shaft of the head feed motor 163 by a joint 164 attached to one end in the axial direction. The head feed motor 163 is fixed to a motor bracket 165, and the motor bracket 165 is fixed to the chassis plate by fixing means such as a fixing screw. A feed nut 162 is screwed onto the feed screw shaft 161, and a nut mounting plate 166 is fixed to the feed nut 162. The nut mounting plate 166 is fixed to the head slider 141 with a fixing screw.

  With such a configuration, when the head feed motor 163 is driven, the rotational force of the rotary shaft is transmitted to the feed screw shaft 161 via the joint 164 and further to the feed nut 162. At this time, since the feed nut 162 is fixed to the head slider 141 via the nut mounting plate 166, it does not rotate. However, the head slider 141 is guided by the two head guide shafts 142 and 144, and its axial direction It is possible to move to. Therefore, the feed nut 162 selectively moves in a direction approaching the head feed motor 163 or in a direction away from the head feed motor 163 according to the rotation direction of the feed screw shaft 161. As a result, the head slider 141 moves integrally with the feed nut 162, and as a result, the print head 151 is moved in the front-rear direction which is the same as the axial direction of the feed screw shaft 161.

  The movement of the print head 151 in the front-rear direction can be detected by the two position detection sensors 174 and 175. The first position detection sensor 175 detects a disk inner stop position where the ink ejection unit 137 of the print head 151 moves inward in the radial direction of the optical disk 5 and passes through a portion closest to the center part by a predetermined distance. . The second position detection sensor 174 detects the outer disk stop position farthest away from the center portion when the ink ejection section 137 of the print head 151 moves outward in the radial direction of the optical disk 5.

  In order to detect these positions, a position detection piece 176 is attached to the nut attachment plate 166. The position detection piece 176 is detected by the first position detection sensor 175, whereby the disk inner stop position is detected, and the print head 151 is stopped at that position. Similarly, by detecting the position detection piece 176 with the second position detection sensor 174, the disk outer stop position is detected, and the print head 151 is stopped at that position.

  FIG. 3 shows a state in which the printing apparatus is housed in the housing 103 with the chassis plate removed, and is superposed on the disc tray 112 and the like. In this optical disc apparatus 100, the head center line Lb passing through the ink ejection part 137 at the approximate center of the print head 151 of the printing apparatus is the rotation of the disc mounting part (turn table) 120 which is the central part of the disc drive apparatus 109. It is set at a position that is eccentric by a distance E from the main body center line La passing through the center Oc. Therefore, the print head 151 moves on the trajectory of the head center line Lb that is decentered by the distance E from the rotation center Oc with respect to the print surface of the optical disc 5 and executes the print operation.

  In addition, on the back side of the housing 103 on the head center line Lb, a head cap 181 that is attached to the ink ejection unit 137 of the print head 151 and an ink reservoir 182 are disposed. The head cap 181 prevents the nozzles of the ink discharge unit 137 from drying and prevents the ink from drying and clogging the nozzles. Further, the ink reservoir 182 prevents a printing error such that ink does not come out so that air does not enter the nozzles of the ink discharge unit 137.

  Next, the detection apparatus 190 according to the present embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a perspective view showing the tray and the detection device according to this embodiment, and shows the installation areas A1 and A2 of the detection device. FIG. 6 is a perspective view showing the tray and the detection device according to the present embodiment, and shows an installation area B of the detection device. 5 and 6 show the positional relationship of each component when the disc tray 112 is completely inserted into the optical disc apparatus.

  The detection device 190 includes, for example, a laser diode 191, a detection window 192, a detector 193, and the like. The detection device 190 detects the degree of contamination of the disk tray 112 by ink mist.

  The laser diode 191 is an example of a light irradiation unit, and irradiates laser light in the direction of the detection window 192. In FIGS. 5 and 6, the laser diode 191 shows a case where the detection window 192 is directly irradiated with laser light, but a laser mirror may be provided in the middle of the laser light path. With this configuration, the optical disc apparatus 100 can be reduced in size.

  The detection window 192 is formed of, for example, a transparent member or a translucent member, and is installed on the disc tray 112. The detection window 192 receives the laser beam from the laser diode 191 and reflects the laser beam to the detector 193. The detection window 192 is exposed on the disk placement surface side of the disk tray 112, and ink mist floating in the optical disk apparatus 100 can adhere to the detection window 192. As the ink mist adheres, the reflectance of the laser beam at the detection window 192 increases.

  As shown in FIG. 5, the installation area of the detection window 192 is preferably in the areas A1 and A2, for example. The areas A1 and A2 are on the downstream side in the rotational direction of the optical disc 5 with respect to the print head 151 and on the upstream side in the rotational direction of the optical disc 5 with respect to the optical pickup 123 on which the objective lens is placed. 5 and 6, the print head 151 is not shown, but the print head 151 moves on the remaining area side other than the areas A1 and A2 when the disk tray 112 is divided into two as in FIG. .

Areas A1 and A2 are positions where ink mist that diffuses in the optical disc apparatus 100 is likely to accumulate. By installing a detection window 192 at such a position, contamination of the optical pickup by ink, particularly the objective lens, can be detected at an early stage. can do. Note that a region A1 closer to the optical pickup 123 than the region A2 is more desirable as an installation position.
Further, the installation area of the detection window 192 is preferably, for example, the area B as shown in FIG. Region B is a region in the vicinity of the optical pickup 123. By installing the detection window 192 at a position such as the region B, contamination of the optical pickup, particularly the objective lens, with ink can be detected at an early stage.

  The detector 193 is an example of a light detection unit, and is, for example, a light receiving element such as a photodiode. The detector 193 receives the light reflected by the detection window 192. When ink mist adheres to the detection window 192 and the reflectance increases, the amount of light received by the detector 193 increases.

  Next, the cleaning device 200 according to the present embodiment will be described with reference to FIG. FIG. 7 is a perspective view showing a tray, a detection device, and a cleaning device according to the present embodiment.

The cleaning device 200 is an example of an ink removing unit, and includes, for example, a rotation motor 201, a rotation unit 202, a support base 203, a support member 204, a cleaner 205, and the like. The cleaning device 200 removes ink from, for example, the detection window 192 contaminated by the ink mist and the objective lens of the optical pickup 123.
For example, the cleaning device 200 is installed on the disc tray 112 by fixing the rotating unit 202 to the disc tray 112.

  The rotation motor 201 starts or stops rotational driving based on a cleaning start or stop control signal. The rotation motor 201 is in contact with the rotation unit 202 and rotates the rotation unit 202. The rotating unit 202 is fixed to the disc tray 112 and connected to the support base 203. The support table 203 rotates together with the rotating unit 202. The support base 203 can be driven by a brush motor so that the cleaner 205 is driven in the AB direction.

The support member 204 is connected to the support base 203 at one end side and is connected to the cleaner 205 at the other end side. The cleaner 205 is formed of a material that can absorb ink mist adhering to the detection window 192 and the objective lens of the optical pickup 123. The cleaner 205 is a spongy body member such as a nonwoven fabric or a sponge.
Since the cleaning device 200 of the present embodiment is rotatable, it can remove ink mist from both the detection window 192 and the objective lens at different positions.

  Next, the behavior of ink mist in the optical disc apparatus according to the present embodiment will be described. FIG. 8A is a perspective view showing the flow of ink mist when printing on the outer peripheral side of the optical disc in the optical disc apparatus according to the present embodiment. FIG. 8B is a plan view showing the flow of ink mist when printing on the outer peripheral side of the optical disc in the optical disc apparatus according to the present embodiment.

First, when the optical disc apparatus 100 is printing on the outer peripheral side of the optical disc 5, as shown in FIGS. 8A and 8B, the mist of the ink 10 ejected from the ink ejection portion 137 of the print head 151 is The airflow generated by the rotation of the airframe floats near the outer periphery of the optical disk 5 in the housing 103. More specifically, the mist of the ink 10 ejected from the ink ejection unit 137 of the print head 151 is downstream in the rotation direction of the optical disc 5 with respect to the ink ejection unit 137 (in FIGS. 8A and 8B, the X axis and the Y axis). And then floats along the outer periphery of the optical disk 5 in the positive direction of the Y axis, and further reaches the side where the X axis is in the negative direction and the Y axis is in the positive direction. . At this time, the floating amount (concentration) of the ink 10 is highest in the region 20 on the downstream side in the rotation direction of the optical disc 5 with respect to the ink discharge portion 137 as shown in FIG. 8B. Have been confirmed.
Therefore, it is more efficient to detect the adhesion of ink mist that floats in the vicinity of the downstream side of the rotation direction of the optical disc 5 in the ink discharge unit 137. That is, as described with reference to FIG. 6, by arranging the detection device 190 in the vicinity of the ink ejection unit 137 and the optical pickup 123, the ink 10 is effectively collected and the contamination detection effect in the housing 103 is improved. Can be made.

Even when the optical disc apparatus 100 is printing the inner peripheral side of the optical disc 5, the mist of the ink 10 ejected from the ink ejection portion 137 of the print head 151 is caused by the air flow generated by the rotation of the optical disc 5, and the housing 103. Floating inside. More specifically, the mist of the ink 10 ejected from the ink ejection part 137 of the print head 151 floats along the rotation direction of the optical disk 5 with respect to the ink ejection part 137 and finally near the center of the optical disk 5. To (around the spindle axis). At this time, the floating amount (concentration) of the ink 10 is the highest in the casing 103 on the downstream side in the rotation direction of the optical disc 5 with respect to the ink discharge portion 137 as shown in FIGS. It has been confirmed by the present inventors that the regions are the left half regions A1 and A2.
Therefore, it is more efficient to collect the ink mist that floats in the vicinity of the direction of the downstream side of the rotation direction of the optical disk 5 of the ink discharge unit 137. That is, as described with reference to FIG. 5, the detection device 190 is effectively arranged on the downstream side in the rotational direction of the optical disk 5 with respect to the print head 151 and on the upstream side in the rotational direction of the optical disk 5 with respect to the objective lens. The ink 10 can be collected and the contamination detection effect in the housing 103 can be improved.

  Next, the configuration of the optical disc apparatus 100 according to the present embodiment will be described with reference to FIG. FIG. 9 is a block diagram showing a configuration of an optical disc apparatus having a label printing function according to the present embodiment.

  As shown in FIG. 8, the optical disc apparatus 100 mainly includes a recording / reproducing unit 500A for recording information on the optical disc 5 or reproducing information recorded on the optical disc 5, and a printing unit 500B for performing label printing on the optical disc 5. Prepare for.

  The recording / playback unit 500A includes, for example, a recording / playback control unit 510, a spindle motor controller 512, a video / audio processing unit 514, a D / A conversion unit 516, an interface 518, a matrix amplifier / synchronization detection unit / ECC unit 520, and the like. A thread control unit 522, a servo control unit 524, a laser control unit 526, a buffer memory 528, a spindle motor 536, an optical pickup 540, a pickup moving mechanism 544, a thread motor 546, and the like.

  The recording / playback control unit 510 inputs / outputs various signals to each of a spindle motor controller 512, a matrix amplifier / synchronization detection unit / ECC unit 520, a thread control unit 522, a servo control unit 524, a laser control unit 526, and the like which will be described later. The entire control unit is controlled centrally.

  The spindle motor 536 is an example of a rotation drive unit, and functions as a rotation drive mechanism that rotates the optical disc 5. The spindle motor 536 is controlled to have an appropriate rotation speed by, for example, a spindle motor controller 512 to which a signal from the recording / reproducing control unit 510 is input.

  The optical pickup 540 includes a laser light source, an objective lens that condenses the laser light emitted from the laser light source on the disk, a photo detector (PD) that detects reflected return light from the disk, and the like (all not shown). .) As the laser light source, for example, a semiconductor laser, particularly a laser diode (LD) is used, but is not limited thereto. In addition, the optical pickup 540 includes an optical system (not shown) for guiding laser light emitted from the laser light source to the objective lens.

  The matrix amplifier in the matrix amplifier / synchronization detection unit / ECC unit 520 calculates and generates a focus error signal, a tracking error signal, an RF signal, and the like based on various signals output from the PD of the optical pickup 540. Similarly, an actuator (not shown) mounted on the optical pickup 540 includes an objective lens, and moves the objective lens in the tracking direction, the focusing direction, and the tilt direction. The synchronization detector (and an A / D converter (not shown)) further generates a clock based on the synchronization signal recorded on the optical disc 5 at a predetermined interval, and converts the analog signal into a digital signal. Further, the ECC unit (and the signal modulator / demodulator) performs error correction processing based on signal modulation, demodulation, addition of ECC, and ECC (Error Correcting Code).

  The thread control unit 522 outputs a signal for controlling the movement of the optical pickup 540 in the radial direction of the optical disk 5 to control the recording / reproducing position (thread servo). More specifically, a signal output from the sled control unit 522 is input to the sled motor 546, and the sled motor 546 drives the pickup moving mechanism 544 based on the input signal. The pickup 540 moves to the recording / reproducing position.

  The servo control unit 524 outputs various servo signals to the actuator mounted on the optical pickup 540 described above based on the focus error signal, the tracking error signal, and the RF signal, and performs appropriate posture control of the objective lens. Note that the servo control unit 524 may output a control signal related to the above-described thread servo, a control signal for the number of rotations of the spindle motor 536, and the like.

  The laser control unit 526 receives a modulation signal from the matrix amplifier and ECC unit (and signal modulator / demodulator (not shown)) in the matrix amplifier / synchronization detection unit / ECC unit 520 and writes a signal to the optical disc 5 in order to write a signal to the optical disk 5. The laser power is modulated, and the laser power is controlled based on the RF signal.

  The buffer memory 528 temporarily stores data when processed by the signal modulator / demodulator and the ECC unit. The video / audio processing unit 514 performs necessary video processing and audio processing, and outputs video and audio in analog form (for example, video / audio output) via the D / A conversion unit 516. An interface 518 is an interface for connecting an external computer, a video / audio source, and the like (not shown). The interface 518 is an example of an adhesion state notifying unit, and may warn the user that cleaning is necessary according to the degree of contamination detected by the contamination detection unit 580.

  The printing unit 500B includes, for example, a print head 550, a head drive motor 560, a print head moving mechanism 562, a head drive circuit 564, a print controller 570, and a memory 572.

  The print head 550 is an example of a print head and corresponds to the print head 151 described above. The head drive motor 560 corresponds to the motor 171 described above. The print head moving mechanism 562 is the above-described pinion gear 172 and rack gear 173 driven by the head drive motor 560. The print head moving mechanism 562 moves the print head 550 in a direction parallel to the radial direction at a position offset from the central axis of the optical disk 5. The head drive circuit 564 is normally integrated with the print head 550 and controls the ejection of ink from the print head 550.

  The print controller 570 receives a signal from the recording / playback control unit 510 and outputs a signal to the recording / playback control unit 510. The print controller 570 controls the print head moving mechanism 562 and the head drive motor 560 that drives the print head moving mechanism 562.

  The memory 572 stores print information data (hereinafter referred to as print data) which is information of print contents. The memory 572 temporarily stores print data from, for example, a personal computer, a memory card, and other external devices.

  Hereinafter, the operation of the optical disc apparatus 100 having such a configuration will be described. At the time of data recording, digital data input to an interface from an external computer (not shown) is modulated by adding an error correction code (ECC) by a signal modulator / demodulator and an ECC unit. Based on the modulated digital data, a pulse is generated by the laser controller 526, and the optical disk 5 is irradiated with laser light through the optical pickup 540, whereby the digital data is recorded. During data recording, servo control is appropriately performed by the servo control unit 524, the spindle motor controller 512, the thread control unit 522, and the like, and laser control is performed.

  On the other hand, at the time of data reproduction, when the optical disc 5 is irradiated with laser light, the return reflected light is detected by the PD of the optical pickup 540. The reflected light detected by the PD is amplified and waveform equalized by the matrix amplifier, the RF signal is reproduced, and a bit string in which the RF signal is binarized by the synchronization detector and the A / D converter is generated. Generated. The generated bit string is subjected to signal demodulation and error correction by a signal modulator / demodulator and an ECC unit. The demodulated signal is separated into video data and audio data by the video / audio processing unit 514, D / A converted by the D / A conversion unit 516, and analog output. During data reproduction, servo control is appropriately performed by the servo control unit 524, the spindle motor controller 512, the thread control unit 522, and the like, and laser control is also performed.

  In the label printing, the spindle motor 536 is controlled based on the signal from the disk surface of the optical disk 5 as in the data reproduction and the printing control is performed. The label printing is performed while rotating the optical disk 5 at a constant rotation speed. It is carried out. In addition, the present invention is not limited to this, and label printing may be performed while recording data, or printing may be performed while changing the rotation speed of the optical disk 5. In this case, for example, the print controller 570 determines that the one-time movement distance of the print head 550 is 1 / n (n is a natural number) of the maximum print width of the print head 550, in this embodiment, the width of the ink ejection unit. Thus, the print head moving means can be controlled.

  The dirt detection unit 580 receives information such as the amount of light from the tray detector 582, for example. The stain detection unit 580 determines the degree of contamination by comparing the amount of light received by the tray detector 582 when the detection window 192 is not contaminated with ink mist with the amount of light received by the tray detector 582 during the stain detection measurement. To do.

The tray detector 582 is an example of an ink detection unit, and is, for example, the detection device 190 described above. The tray detector 582 irradiates a detection window with laser light and detects the amount of reflected laser light.
The cleaning unit 590 is, for example, the cleaning device 200 described above, and removes the objective lens of the optical pickup 540 to which the ink mist has adhered and the ink mist from the detection window.
The brush motor 592 drives the cleaner 205 in the AB direction as shown in FIG. 7, for example, and efficiently removes ink mist.

The cleaning controller 594 drives and controls the cleaning unit 590 according to the degree of dirt detected by the dirt detector 580. The cleaning controller 594 receives a signal from the recording / playback control unit 510 and sends a drive signal to the brush motor 592 and the unit rotation motor 596.
The unit rotation motor 596 is, for example, the rotation motor 201 described above, and rotates the cleaning unit 590 based on a drive signal from the cleaning controller 594.

  Next, contamination detection and cleaning operations of the optical disc apparatus 100 according to the present embodiment will be described. FIG. 10 is a flowchart showing contamination detection and warning operations of the optical disc apparatus according to the present embodiment.

  First, when visible information such as characters, symbols, photographs, pictures, patterns, and the like is frequently printed on the label surface of the optical disk 5 by the optical disk apparatus 100 of this embodiment, the disk tray 112 is contaminated by ink mist. At this time, the detection window 192 provided on the disk tray 112 and exposed to the disk loading side is also contaminated (step S101).

  When the detection window 192 is contaminated, the output of the detector 193 changes because the reflectance of the laser beam in the detection window 192 changes (step S102). The dirt detection unit determines the degree of dirt according to the output of the detector 193, and if it is necessary to remove ink from the optical pickup 123, displays a cleaning warning to the user (step S103). As a result, a failure due to ink contamination of the optical pickup 123 can be prevented in advance.

  Further, ink removal (cleaning) of the optical pickup 123 by the cleaning device 200 is started according to the degree of contamination (step S104). The start of cleaning is determined by, for example, the cleaning controller 594 shown in FIG. As a result, a failure due to ink contamination of the optical pickup 123 can be prevented in advance, and further, it is possible to save the user from having to determine the contamination and perform cleaning.

  Furthermore, it demonstrates in detail with reference to FIG. FIG. 11 is a flowchart showing the contamination detection and ink removal operation of the optical disc apparatus according to the present embodiment.

  First, it is determined whether the output of the detector 193 is sufficient because the disk tray 112 and the detection window 192 are not contaminated (step S201). When it is determined that the disc tray 112 and the detection window 192 are not contaminated, visible information such as characters is printed on the label surface of the optical disc 5 (step S202).

  On the other hand, when it is determined that the disk tray 112 or the detection window 192 is contaminated, it is determined whether or not the number of cleanings up to the present is equal to or less than a predetermined number (step S203). When the number of cleanings is equal to or less than the predetermined number, the cleaning device 200 of the present embodiment starts a cleaning sequence. Specifically, first, the cleaner 205 is moved to a predetermined position (to the direction A in FIG. 7) (step S204). Further, the optical pickup 123 is moved to a predetermined position where the objective lens is easily cleaned (step S205).

  Next, the cleaner 205 is driven in the AB direction to clean the objective lens of the optical pickup 123 (step S206). Thereby, the ink mist adhering to the objective lens can be removed. Next, by driving the rotary motor 201, the cleaner 205 is rotated to a predetermined position where the detection window 192 is easily cleaned (step S207). Then, the detection window 192 installed on the disc tray 112 is cleaned (step S208). Thereby, the ink mist adhering to the detection window 192 can be removed.

  If it is determined in step S203 that the number of cleanings up to now is greater than the predetermined number, the optical disc apparatus 100 outputs an error, for example, via an interface (step S209). Thereby, when the cleaning is frequently performed and there is a possibility that an abnormality has occurred in the printing apparatus of the optical disc apparatus 100, the user can be notified of the possibility of the abnormality.

(Second Embodiment)
Next, an optical disc device according to a second embodiment of the present invention will be described. Since the optical disk apparatus of this embodiment is different from the cleaning apparatus 200 of the first embodiment only in the cleaning apparatus 300 as compared with the first embodiment, the cleaning apparatus 300 will be described. Since other components are the same, detailed description thereof is omitted.

FIG. 12 is a perspective view showing a cleaning device 300 according to the second embodiment of the present invention. The cleaning device 300 includes, for example, a brush motor 301, a support base 302, a gear 303, a support member 304, a cleaner 305, and the like. For example, the cleaning device 300 removes ink from the objective lens of the optical pickup 123 contaminated by ink mist.
Although the disk tray 112 is omitted in FIG. 12, the cleaning device 300 is installed on the disk tray 112 by fixing the support base 302 to the disk tray 112, for example.

  The brush motor 301 starts or stops rotational driving based on a cleaning start or stop control signal. The brush motor 301 meshes with the gear 302 and moves the support member 304 connected to the gear 302.

  The support member 304 is connected to the gear 303 on one end side and connected to the cleaner 305 on the other end side. The cleaner 305 is formed of a material that can absorb ink mist attached to the objective lens of the optical pickup 123. The cleaner 305 is, for example, a spongy body member such as a nonwoven fabric or a sponge.

  Next, contamination detection and cleaning operations of the optical disc apparatus 100 according to the present embodiment will be described. FIG. 13 is a flowchart showing the contamination detection and ink removal operation of the optical disc apparatus according to the present embodiment.

  First, it is determined whether the output of the detector 193 is sufficient because the disk tray 112 and the detection window 192 are not contaminated (step S301). When it is determined that the disc tray 112 and the detection window 192 are not contaminated, visible information such as characters is printed on the label surface of the optical disc 5 (step S302).

  On the other hand, when it is determined that the disc tray 112 or the detection window 192 is contaminated, it is determined whether or not the number of cleanings up to now is a predetermined number or less (step S303). When the number of cleanings is equal to or less than the predetermined number, the cleaning device 300 of the present embodiment starts a cleaning sequence. Specifically, first, the cleaner 205 is moved to a predetermined position (to the direction A in FIG. 12) (step S304). Further, the optical pickup 123 is moved to a predetermined position where the objective lens is easily cleaned (step S305).

  Next, the cleaner 205 is driven in the AB direction to clean the objective lens of the optical pickup 123 (step S306). Thereby, the ink mist adhering to the objective lens can be removed.

  If it is determined in step S303 that the number of cleanings up to now is greater than the predetermined number of times, the optical disc apparatus 100 outputs an error, for example, via an interface (step S307). Thereby, when the cleaning is frequently performed and there is a possibility that an abnormality has occurred in the printing apparatus of the optical disc apparatus 100, the user can be notified of the possibility of the abnormality.

  According to the first embodiment and the second embodiment, it is possible to effectively determine the state of contamination inside the apparatus as compared with the optical disc apparatus having the conventional printing function. Further, the contamination can be detected more effectively by arranging the installation position of the detection device at a position where the ink mist is easily collected. Furthermore, by providing a means for warning the user to perform cleaning according to the contamination state, it is possible to prevent a failure of the apparatus in advance. In addition, since a cleaning device provided in advance is operated according to the contamination state, a failure can be prevented in advance and the user's trouble can be saved.

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  For example, in the above embodiment, the detector 193 detects the light reflected by the detection window 192, but the present invention is not limited to such an example. For example, the amount of light once transmitted through the detection window and reflected by the optical disk may be measured. In addition, when the optical disc is not placed on the disc tray, the detector may detect light transmitted through the detection window. At this time, unlike the configuration of FIGS. 5 and 6, the detector is installed at a position opposite to the laser diode 191 across the detection window 192.

1 is a perspective view showing an optical disc apparatus according to a first embodiment of the present invention. It is a perspective view which shows the optical disk apparatus based on the embodiment, and shows the state which removed the upper surface board of the housing | casing. It is a top view which shows the optical disk apparatus based on the embodiment, and shows the state which removed the upper surface board of the housing | casing. FIG. 3 is a perspective view showing the optical disc apparatus according to the embodiment, showing a state in which the printing apparatus is detached from the optical disc apparatus shown in FIG. 2. It is a perspective view which shows the tray and detection apparatus which concern on the embodiment, and shows installation area | region A1, A2 of a detection apparatus. It is a perspective view which shows the tray and detection apparatus which concern on the same embodiment, and shows the installation area | region B of a detection apparatus. It is a perspective view which shows the tray, the detection apparatus, and cleaning apparatus which concern on the same embodiment. FIG. 4 is a perspective view showing a flow of ink mist when printing on the outer peripheral side of the optical disc in the optical disc apparatus according to the embodiment. FIG. 6 is a plan view showing the flow of ink mist when printing on the outer peripheral side of the optical disc in the optical disc apparatus according to the embodiment. It is a block diagram which shows the structure of the optical disk apparatus which has a label printing function based on the embodiment. 3 is a flowchart showing an operation of the optical disc apparatus according to the embodiment. 5 is a flowchart showing contamination detection and ink removal operation of the optical disc apparatus according to the embodiment. It is a perspective view which shows the cleaning apparatus which concerns on the 2nd Embodiment of this invention. 5 is a flowchart showing contamination detection and ink removal operation of the optical disc apparatus according to the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Optical disk 100 Optical disk apparatus 102 Eject button 103 Housing | casing 111 Disc inlet / outlet 112 Disc tray 120 Disc mounting part 123 Optical pick-up 128 Plate support plate 137 Ink ejection part 140A, 140B Guide bearing 141 Head slider 142, 144 Head guide shaft 143a 1st Bearing portion 143b Second bearing portion 151 Print head 152 Head holder 161 Feed screw shaft 162 Feed nut 163 Head feed motor 171 Motor 172 Pinion gear 173 Rack gear 174, 175 Position detection sensor 176, 177 Position detection piece 181 Head cap 182 Ink reservoir 183 Support member

Claims (12)

A rotation drive unit on which a disk-shaped medium is detachably mounted and rotates the disk-shaped medium;
A movable print head for ejecting ink droplets onto a printing surface of the disk-shaped medium rotated by the rotation drive unit;
A disk recording / reproducing apparatus, comprising: an ink detection unit that detects an adhesion state of the ink mist to which a small volume of ink mist has adhered to the ink droplets ejected from the print head and diffused in the vicinity of the disk-shaped medium. An objective lens for irradiating the disk-shaped medium with light;
2. The ink detection unit according to claim 1, wherein the ink detection unit is provided on a downstream side in the rotation direction of the disk-shaped medium with respect to the print head and on a upstream side in the rotation direction of the disk-shaped medium with respect to the objective lens. Disc recording / playback device. An objective lens for irradiating the disc-shaped medium with the first light;
The disk recording / reproducing apparatus according to claim 1, wherein the ink detection unit is provided in the vicinity of the objective lens. A concave disk tray on which the disk-shaped medium can be placed;
The disc recording / reproducing apparatus according to claim 1, wherein the ink detection unit is provided on the disc tray.   The disk recording / reproducing apparatus according to claim 1, wherein the ink detection unit has a detection window formed of a transparent material or a translucent material. The ink detection unit
A light irradiator for irradiating the detection window with second light;
6. The disc recording / reproducing apparatus according to claim 5, further comprising: a light detection unit configured to detect the second light reflected by the detection window or the second light transmitted through the detection window.   The disc recording / reproducing apparatus according to claim 1, further comprising an adhesion state notification unit that notifies the adhesion state of the ink mist according to the adhesion state of the ink mist detected by the ink detection unit.   8. The ink removal unit according to claim 2, further comprising an ink removal unit that removes the ink mist attached to at least one of the objective lens and the detection window in accordance with an attachment state of the ink mist detected by the ink detection unit. The disc recording / reproducing apparatus according to any one of the above.   The disk recording / reproducing apparatus according to claim 8, wherein the ink removing unit is formed of a material that adsorbs the ink. Discharging ink droplets onto the printed surface of the rotated disk-shaped medium;
Detecting an adhering state of ink mist having a smaller capacity than the ink droplets ejected together with the ink droplets and diffused in the vicinity of the disc-shaped medium in the vicinity of the objective lens that irradiates the disk-shaped medium with the first light. A method for detecting attached ink mist in a disk recording / reproducing apparatus. The step of detecting the adhesion state of the ink mist includes:
Irradiating the detection window formed of a transparent material or a semi-transparent material to which the ink mist adheres with a second light;
11. The method for detecting attached ink mist of a disk recording / reproducing apparatus according to claim 10, further comprising: detecting the second light reflected by the detection window or the second light transmitted through the detection window. The attached ink of the disk recording / reproducing apparatus according to claim 9, further comprising a step of removing the ink mist attached to at least one of the objective lens and the detection window according to the attached state of the ink mist. Mist detection method.

Images