JP2005262622A - Printing attachment and optical disk apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label printing attachment which can easily print a label of an optical disk through the use of an existing optical disk apparatus by equipping the attachment with compatibility with a mounting part of the existing optical disk apparatus, and constituting the attachment by integrating a rotary table, a driving means and a recording means in the attachment. <P>SOLUTION: This printing attachment 50 comprises the rotary table 5 which has compatibility with at least a clamper (mounting part) 4 of the optical disk 2, a motor (driving means) 10 for rotating the rotary table 5 at a predetermined rotational speed, and a thermal head (recording means) 6 for recording information on the label 1 which is placed on the rotary table 5. In addition, a rotary shaft of the motor 10 can also be equipped with a transmission means 9 using a pulley or a gear for speed reduction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a print attachment and an optical disk device to which the print attachment can be mounted. More specifically, the print attachment is mounted without structurally changing the optical disk device, and the necessary information is printed on a label attached to the optical disk. It is about attachment.

In recent years, various types of disc-shaped media in which digital information by pits or magnetism is recorded on the disc-shaped media have become widespread. These are generally collectively called optical disks. As types of such optical discs, information such as music CDs, CD-ROMs, or DVDs is recorded in advance, a write-once optical disc that can be written only once, and a rewritable optical disc that can be rewritten multiple times. These are rapidly spreading.
On the other hand, an optical disc on which information is recorded in advance is generally attached with a label on the surface for the purpose of displaying the recorded contents or improving the design. For example, a title and a song title are printed on a label surface of a music CD along with a predetermined pattern, and a recorded content and the like are printed on a label surface of the CD-ROM along with a predetermined pattern. On the other hand, a write-once optical disk and a rewritable optical disk are used by the user himself / herself to write desired information, so that a label on which predetermined items are printed cannot be pasted. For this reason, it is common for such types of optical discs to be able to write the recorded contents in a case that accommodates them. However, it is convenient if a write-once or rewritable optical disc is provided with a label on which information is printed in advance such as affixed to a music CD or the like, and a user can write necessary information on this label. For this reason, printers that can print necessary items on labels attached to write-once optical discs have been commercialized.
Japanese Patent No. 3341572 discloses a technique in which such a printing mechanism is incorporated in an optical disc apparatus that records and reproduces information with respect to the optical disc. Japanese Patent Application Laid-Open No. 11-283356 discloses a technique for printing on a rewritable optical disk, because it is necessary to rewrite the recorded contents recorded on the label in accordance with the rewriting of the recorded information. ing.
Japanese Patent No. 3341572 JP-A-11-283356

However, in the case of a conventional printing apparatus that has already been commercialized, there is a problem that the user must purchase, install, and use the printing apparatus separately.
The prior art disclosed in Patent Document 1 includes a print head and a drive unit that freely drives in the X and Y directions on an optical disc, and prints a print image by spraying ink onto the optical disc. Therefore, there is a problem that it cannot be used for a rewritable optical disc and the range of use is limited.
Further, the conventional technique disclosed in Patent Document 2 has a problem that an existing optical disc apparatus must be modified or an optical disc apparatus provided with the function in advance must be prepared, and the existing optical disc apparatus cannot be used as it is. There is.
In view of the above problems, the present invention includes an attachment that is compatible with a mounting portion of an existing optical disk device, and the attachment includes a rotary table, a driving unit, and a recording unit as a single unit. Another object of the present invention is to provide a label printing attachment that enables easy label printing of an optical disk using an existing optical disk device.
Another object is to make the label reusable by making the label a thermoreversible material.

In order to solve the above-described problems, the present invention provides a printing attachment including a rotary table compatible with at least a mounting portion of an optical disc, and driving means for rotating the rotary table at a predetermined rotational speed. And a recording means for recording information on a label placed on the rotary table, and when recording predetermined information on the label, the print attachment is mounted on the optical disk mounting portion instead of the optical disk. Then, after setting the label on the rotary table of the printing attachment, the predetermined information is recorded by the recording means while rotating the rotary table by the driving means.
A feature of the present invention is that an existing optical disk device is used to mount a printing attachment rotary table on its mounting portion, and information is recorded on a label set on the rotary table while the rotary table is rotated by a dedicated driving means. To do. Therefore, it is possible to record information on a label using an existing optical disk device.
According to this invention, when recording predetermined information on a label affixed to the optical disc, the printing attachment is mounted on the mounting portion of the optical disc instead of the optical disc, the label is set on the rotary table of the printing attachment, and the driving means Thus, since the information is recorded by the recording means while rotating the rotary table, label printing can be easily and reliably performed using the existing optical disk device.
According to a second aspect of the present invention, the rotary table, the driving unit, and the recording unit are integrally formed by a housing.
In order not to modify the existing optical disc apparatus, all the components necessary for the present print attachment must be configured as a single unit.
According to this invention, since the rotary table, the driving unit, and the recording unit are integrally formed by the housing, information can be recorded on the label without any modification to the structure of the existing optical disc apparatus. it can.

According to a third aspect of the present invention, the transparency or color tone of the label is reversibly changed by heat applied to the label, and the transparency or color tone is maintained in at least two types at room temperature. It is composed of a material.
In order to reuse the label many times, the information recorded on the label must be able to be erased and recorded. Moreover, it is necessary that the state is stable at room temperature. As an optimum recording medium, there is a thermoreversible material that can realize two or more modes depending on the temperature and stably hold the mode at room temperature. A typical example is a TC film.
According to this invention, the label is made of a thermoreversible material in which the transparency and color tone of the label are reversibly changed by heat applied to the label, and the transparency or color tone is maintained in at least two forms at room temperature. Since it is configured, information can be rewritten and can be reused when used as a label.
According to a fourth aspect of the present invention, the label includes a recording unit that generates a first temperature for shifting the label to a translucent state, and an erasing unit that generates a second temperature for shifting the label to a transparent state. It is characterized by comprising.
The property of the thermoreversible material is that when the temperature is heated from room temperature to a predetermined temperature range (second temperature), the transparency increases (erase), and the state (transparency) is maintained even after the state is returned to room temperature. Further, when it is heated from room temperature to a temperature range (first temperature) higher than the above temperature, it becomes translucent, and when it is returned to room temperature, it becomes cloudy (recording). When information is recorded on the label using this characteristic, the information can be recorded by modulating the recording unit with the information while maintaining the first temperature. In the case of reuse, the erased portion may be maintained at the second temperature to heat the portion to be erased.
According to this invention, the recording means includes a recording unit that generates a first temperature for shifting the label to a translucent state, and an erasing unit that generates a second temperature for shifting the label to a transparent state. Thus, by controlling the temperature, it is possible to repeatedly record information on the label and to erase the information.

According to a fifth aspect of the present invention, the center opening of the label and the mounting portion of the rotary table are provided with a fitting portion that fits each other.
The alignment of information on the label can be performed by always setting the label at a certain place when setting the label on the rotary table. That is, if the position is shifted each time the label is set on the rotary table, there is a risk that information is partially erased or a portion that is not related to rewriting is erased. Therefore, in the present invention, a fitting portion is provided so that the center opening portion of the label and the mounting portion of the rotary table are fitted with unevenness. Thereby, fixed alignment can always be performed only by fitting the center opening part of a label with the fitting part of a rotary table.
According to this invention, since the center opening portion of the label and the mounting portion of the rotary table are provided with the fitting portions that are fitted to each other, the relative position between the label and the rotary table can be always constant.
Claim 6 comprises speed detection means for detecting the speed of the rotary table on the circumference of the rotary table, and the speed detection means is transmitted light from a slit formed on the circumference of the rotary table or from a reflecting plate. It is an optical sensor for detecting reflected light or a magnetic sensor for detecting a magnetic change of a magnetic pattern.
In order to detect the speed of the rotary table, it is most accurate and reliable to detect the rotation of the rotary table by some method. For example, a slit is formed on the circumference of the rotary table and read by a transmission type sensor, a reflection plate is provided on the circumference and read by a reflection type sensor, or a magnetic pattern is provided on the circumference. Reading with a magnetic sensor can be considered, but any method may be used.
According to this invention, the speed detecting means is an optical sensor that detects transmitted light from the slit formed on the circumference of the rotary table or reflected light from the reflecting plate, or a magnetic sensor that detects a magnetic change in the magnetic pattern. The accuracy of speed detection of the actual rotary table can be increased.
According to a seventh aspect of the present invention, there is provided a start position detecting means for detecting a rotation start position of the rotary table on the circumference of the rotary table, and the start position detecting means is transmitted light from a slit formed on the circumference of the rotary table or It is an optical sensor for detecting reflected light from a reflecting plate or a magnetic sensor for detecting a magnetic change of a magnetic pattern.
In order to detect the absolute position of the label on the turntable, it is necessary to specify the start position of the turntable. For this purpose, a slit is formed only at one location on the circumference and read by a transmission type sensor, a reflection plate is provided at one location on the circumference and read by a reflection type sensor, or a magnetic pattern is circumferentially arranged. It is conceivable to use one of these methods to read with a magnetic sensor, but any method may be used.
According to this invention, since the start position detecting means is an optical sensor that detects transmitted light from a slit formed on the circumference or reflected light from a reflecting plate, or a magnetic sensor that detects a magnetic change of a magnetic pattern, The distance from the starting position of the table can be accurately determined.

According to an eighth aspect of the present invention, when the label is set on the turntable, an elastic member is further disposed between the turntable and the label.
When recording information on the label, the recording means and the label must be in contact with each other at a constant pressure in order to record heat by heating from the recording means. Therefore, in the present invention, the adhesiveness is increased by further disposing an elastic member between the rotary table and the label.
According to this invention, when the label is set on the rotary table, the elastic member is further arranged between the rotary table and the label, so that the adhesion between the label and the recording means can be further increased.
A ninth aspect is characterized in that the print attachment according to any one of the first to eighth aspects can be mounted, and the drive of the optical disc apparatus is stopped while the print attachment is being driven.
Since the mounting portion of the printing attachment of the present invention is compatible with an existing optical disk, any optical disk apparatus can be used as long as the optical attachment is removed and the printing attachment of the present invention is attached. When driving this printing attachment, it is necessary to stop driving the optical disk apparatus because the driving source (motor) is different.
According to this invention, the optical disc apparatus can be mounted with a print attachment, and while the print attachment is being driven, the drive of the optical disc apparatus is stopped, so that adverse effects on the optical disc apparatus can be prevented.

According to the first aspect of the present invention, when predetermined information is recorded on a label to be affixed to the optical disc, the print attachment is attached to the optical disc attachment portion instead of the optical disc, and the label is set on the rotary table of the print attachment. Since the information is recorded by the recording means while rotating the rotary table by the driving means, label printing can be easily and reliably performed using the existing optical disk device.
According to the second aspect of the present invention, since the rotary table, the driving unit, and the recording unit are integrally formed by the housing, information can be recorded on the label without any modification to the structure of the existing optical disc apparatus. it can.
Further, in claim 3, the label is made of a thermoreversible material in which the transparency and color tone of the label are reversibly changed by heat applied to the label, and the transparency or color tone is maintained in at least two forms at room temperature. Since it is configured, information can be rewritten and can be reused when used as a label.
According to a fourth aspect of the present invention, the recording means includes a recording unit that generates a first temperature for shifting the label to a translucent state, and an erasing unit that generates a second temperature for shifting the label to a transparent state. Thus, by controlling the temperature, it is possible to repeatedly record information on the label and to erase the information.
According to the fifth aspect of the present invention, since the center opening portion of the label and the mounting portion of the rotary table are provided with fitting portions that are fitted to each other, the relative position between the label and the rotary table can be always constant.
According to a sixth aspect of the present invention, the speed detecting means is an optical sensor that detects transmitted light from a slit formed on the circumference of the rotary table or reflected light from a reflecting plate, or a magnetic sensor that detects a magnetic change of a magnetic pattern. The accuracy of speed detection of the actual rotary table can be increased.
According to the seventh aspect of the present invention, since the start position detecting means is an optical sensor that detects transmitted light from a slit formed on the circumference or reflected light from a reflecting plate, or a magnetic sensor that detects a magnetic change of a magnetic pattern, The distance from the starting position of the table can be accurately determined.
According to the eighth aspect of the present invention, when the label is set on the rotary table, an elastic member is further disposed between the rotary table and the label, so that the adhesion between the label and the recording means can be further increased.
According to the ninth aspect of the present invention, since the optical disc apparatus can be mounted with a print attachment, and the drive of the optical disc apparatus is stopped while the print attachment is being driven, it is possible to prevent the optical disc apparatus from being adversely affected.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention only unless otherwise specified. .
FIG. 1 is an exploded perspective view of an optical disc and a label according to an embodiment of the present invention. FIG. 2 is a plan view showing an example of label printing. As shown in FIGS. 1 and 2, it is assumed that the user attaches the label 1 to one side (non-recording surface) of the optical disc 2 on the optical disc 2. This label 1 is a so-called TC film made of a thermoreversible recording medium. That is, a film composed of a thermoreversible material whose transparency and color tone are reversibly changed by applied heat and whose transparency or color tone is maintained in two or more forms at room temperature is used as the label 1. .

More specifically, the recording principle of the thermoreversible recording medium will be described with reference to FIG. The vertical axis represents the transparency of the TC film, and the horizontal axis represents the heating temperature. In the case of the label 1 of this embodiment, when heated to temperatures T0 (A), T1 (B), T2 (C), and T3 (D), the transparency becomes large (point of E). D), T2 (C), and T0 (E) or less, even if it returns to normal temperature, a transparent state is maintained largely. Also, when heated to temperatures T0 (A), T1 (B), T2 (C), T3 (D), and T4 (F) or higher, it becomes translucent, and then T4 (F), points G, T0 (A ) When it returns to the following normal temperature, it becomes cloudy. Such a phenomenon occurs because the organic low-molecular substance particles dispersed in the resin base material constituting the label 1 are closely adhered to the resin base material, and voids are also formed in the organic low-molecular substance particle portion. In the absence of light, the light incident from one side is transmitted through the opposite side without being scattered, so that the label 1 appears transparent. On the other hand, fine crystals of low-molecular-weight organic substances aggregate to form a polycrystal. When configured, the gap is formed at the interface of the crystal or the interface between the particle and the resin base material, and the light incident from one side is refracted / reflected at the interface between the gap and the crystal and the crystal / resin and scattered. This is because it looks white.
However, the label 1 is not limited to the label 1 of the present embodiment in which the state is maintained by changing into two modes of a transparent state and a cloudy state, and the state is maintained by changing the color tone to two or more modes. It is possible to selectively use various thermoreversible recording media. That is, if the medium is in the first state when heated to the first temperature and becomes the second state different from the first state when heated to the second temperature, it is used as the label 1. Is possible.
Also, what is recorded as data on the write-once and rewritable optical discs depends on the user, but the contents cannot be determined only by appearance. Accordingly, as shown in FIG. 2, if simple information such as the title, artist name 1a, date, and remaining capacity (remaining recording time) 1b can be easily recognized as shown in FIG.
FIG. 3 is a side view of a general optical disc apparatus. The same components as those in FIG. 1 will be described with the same reference numerals. In FIG. 3, the optical disk 2 is integrally supported by a magnetic force of a permanent magnet that is rotatably supported by a rotary drive motor 3 and incorporated in a clamper 4. On the other hand, the laser light is converged by the objective lens 7a installed in the optical pickup 7 for accessing the optical disc 2, and recording or reproduction is performed. The optical pickup 7 is supported so as to be movable in the radial direction of the optical disc 2 as indicated by the arrow in FIG.

FIG. 4 is a side view showing a schematic configuration of a print attachment set in the optical disc apparatus according to the embodiment of the present invention. The printing attachment 50 includes a rotary table 5 compatible with at least the clamper (mounting portion) 4 of the optical disc 2, a motor (driving means) 10 that rotates the rotary table 5 at a predetermined rotational speed, and a rotary table 5. And a thermal head (recording means) 6 for recording information on the mounted label 1. The motor 10 may include a transmission means 9 using a speed reducing pulley or gear on its rotating shaft. As will be described later, the transmission means 9 contacts the table 5 and rotates it.
In this example, a rotary table 5 having a label 1 attached to the upper surface is rotatably supported instead of the optical disk 2 of FIG. A thermal head 6 for printing the label 1 is installed on the upper side facing the optical pickup 7. The thermal head 6 needs to be in close contact with the label 1 in order to convert print information into heat and efficiently transmit it to the label 1 to obtain good print quality.
FIG. 5 is an exploded perspective view for explaining the printing attachment 50 of FIG. 4 in more detail. The same components as those in FIG. 4 are described with the same reference numerals. The thermal head 6 includes a substrate 6a in which a plurality of heating elements are patterned on a substrate and a heat radiating plate 6b that radiates excess heat generated from the heating elements. The optical disk apparatus is provided with an optical disk rotation drive motor 3 for data recording. However, data recording on the optical disk has been speeded up, and the optical disk is rotated at a speed close to 10,000 rotations per minute. On the other hand, the heat-sensitive recording on the label needs to be driven at a low speed of 1 to 2 revolutions per minute, and it is extremely difficult to drive both with high accuracy with a single motor. Therefore, a motor 10 for low-speed rotation is provided, and the motor 10 transmits a rotational force to the rotary table 5 by bringing a pulley 9 using friction into contact with the outer peripheral side surface 5 a of the rotary table 5. Instead of the pulley 9, a gear 5e may be formed on the outer peripheral side surface of the rotary table 5 as shown in FIG. 6, and the rotational force of the motor 10 may be transmitted by the gear 9a. In order not to modify the existing optical disk apparatus, the rotary table 5, the thermal head 6, the pulley 9, and the motor 10 that are necessary for the printing attachment 50 must be configured integrally. There is no difficulty to the left. For example, as shown in FIG. 7, the motor 10 is fixed to a sturdy casing 34 and the pulley 9 is set to abut against the rotary table 5. The rotary table 5 is supported from below by auxiliary pulleys 31 and 32 in order to fix the position. The auxiliary pulleys 31 and 32 have their shaft centers fixed to the shafts 30 and 33, respectively. It is supported. The auxiliary pulleys 31 and 32 rotate following the rotation of the rotary table 5. Further, the thermal head 6 is fixed to the housing 34 so as to be retractable in the direction of the arrow. Thus, when the label 1 is set on the rotary table 5, the thermal head 6 can be released in the direction of the arrow.

FIG. 8 is an exploded perspective view of the printing attachment according to the first embodiment of the present invention. The turntable 5 includes a positioning projection 5c for positioning the label 1. Correspondingly, a fitting recess 1c having a shape suitable for fitting the fitting protrusion 5c in an aligned state is cut out in the label 1. By fitting the two, the position of the label 1 and the rotary table 5 in the rotational direction is uniquely determined. Therefore, when a rewritable label is used on a rewritable optical disk, the information written originally is saved by the application, or the information originally written is read and added to it. It becomes possible to rewrite only the part. In addition, slits 5b are formed on the turntable 5 at a predetermined pitch over the entire outer periphery in order to detect a low-speed rotation speed (only a part is shown in the figure, and the others are omitted). In the example of FIG. 8, the slit 5b for the optical sensor is used, but as another means, a reflection plate is formed over the entire outer periphery of the rotary table 5 and detected by the reflection type sensor, or the magnetic sensor and the magnetic slit are It may be provided.
FIG. 9 is a perspective view showing an example of the start position detecting means of the rotary table 5. This start position detecting means can be implemented by providing, for example, one transmission slit 5d at an appropriate position. If the start position of the turntable 5 can be detected, the position is determined by fitting positioning with respect to the label 1, so that the optical disc apparatus of the present invention can accurately know which rotation position the label is in, and It is possible to add a label or rewrite only a part. In the example of FIG. 9, the slit 5d is for the optical sensor. However, as another means, a reflection plate may be formed and detected by a reflection type sensor, or a magnetic sensor and a magnetic slit may be provided.

FIG. 10 is a diagram for explaining the positional relationship between the slit and the sensor in the rotary table 5 of FIG. The speed detection means and the start position detection means include transmission slits 5b and 5d of the turntable 5 and light emitting elements 11b and 12b. When the turntable 5 rotates and the transmission slits 5b and 5d are between the light emitting elements 11b and 12b and the light receiving elements 11a and 12a, the light receiving elements 11b and 12a receive the light from the light emitting elements 11b and 12b, and the light receiving elements 11a and 12a are electrically When the light shielding portion that is not the transmissive slit crosses the light of the light emitting element, the light does not enter the light receiving element, and thus becomes Low or High. The rotational speed can be calculated by the number of switching between the High and Low signals per unit time. With respect to position detection based on the same principle, the moment when the light-shielding portion is switched to the transmission slit 5d can be known by the change of the signal of the light receiving element that receives the light of the light emitting element from High to Low or from Low to High.
In addition, optical disks, which are currently mainstream, are made of polycarbonate from the standpoints of their optical characteristics, mass productivity, and price. Since this polycarbonate is a thin plate of 1.2 mm, the warp shown in FIG. 11 occurs due to environmental changes during transportation and storage as well as during production. In particular, a DVD is formed by bonding two 0.6 mm polycarbonates to form a single 1.2 mm disk, and further warping is inevitable because it is produced by bonding. The thermal head 6 must be in close contact with the label 1 in order to efficiently convert the print information to heat and transmit it to the label 1 to obtain good print quality. If a layer of air in micron units is formed between the thermal head and the label without being in close contact, the heat transfer becomes extremely poor. Therefore, when printing on a labeled optical disk, the thermal head 6 is indicated by an arrow as shown in FIG. The indicated pressure P must be applied to adhere to the surface of the label 1. However, it is difficult to correct the warp of the optical disk and bring it into close contact over the entire radial direction. This is because there is an optical pickup 7 at a position opposite to the thermal head, and when accessing with laser light, a complicated mechanism for retracting the thermal head must be provided. According to the present invention, the turntable 5 is made of a material different from that of the optical disk 2 and uses glass or metal having good mechanical properties, so that it has good flatness and does not require high pressure on the thermal head 6. Further, since the rigidity can be increased, the resistance to pressure is also high.
FIG. 13 is a view for explaining an example in which an elastic member is disposed on the rotary table of the present invention. By disposing an elastic member 5f made of a PET film or the like between the turntable 5 and the label 1 as in the present embodiment, the thermal head 6 made of a hard ceramic material using the softness of the label 1 is used. It becomes possible to improve the adhesion to the surface.

FIG. 15 is a block diagram of the control system of the optical disk apparatus of the present invention. The optical disc device 60 includes a controller 21 that controls the entire optical disc device 60, an optical pickup 7 that reads and writes information on the optical disc 2, a sledge motor 23 that moves the optical pickup 7 in the radial direction of the optical disc 2, and an optical disc. 2, a spindle motor 3 that rotates the rotary table 5, a motor 10 that rotates the rotary table 5 at a low speed, a thermal head 6 that records information on the label 1 attached to the optical disk 2, and a speed detection that detects the rotational speed of the rotary table 5. A means 11, a start position detecting means 12 for detecting the home position of the rotary table 5, and a driver circuit 24 having various drivers, ROM, RAM and the like are configured.
The optical pickup 7 is supported by a carrier shaft 8 that supports the optical pickup 7 so as to be movable in the radial direction of the optical disc 2 (see FIG. 5). That is, the optical pickup 7 is slidably attached to the pair of carrier shafts 8 and is driven by the sledge motor 23 via a power transmission mechanism (not shown) to move in the radial direction of the optical disc 2. Here, only the objective lens 7a is shown in FIG. 3, 4 or 5, but the optical pickup 7 is not shown, but the laser diode and the laser light emitted from the laser diode are passed through the objective lens. An irradiation optical system that irradiates the recording surface of the optical disc 2 with a spot, and a return optical system that guides the reflected light of the optical disc 2 to various light receiving units in order to obtain a reference signal, tracking signal, and focusing signal from the reflected light of the optical disc 2 are mounted. ing. Here, the irradiation optical system and the return optical system share many optical components.
The thermal head 6 has a large number of heating elements arranged on the line, and is driven and controlled by a controller 21, which will be described later, so that each heating element has two types of heat generation energy of a first temperature and a second temperature. To generate heat selectively. That is, the first temperature of the heating element in the thermal head 6 is a temperature at which the label 1 attached to the optical disc 2 is heated to a temperature T4 or higher, and the second temperature of the heating element is the temperature from the temperature T2 to the label 1. It is the temperature which heats to the temperature between T3. Here, the arrangement direction of the heating elements in the thermal head 6 is a direction perpendicular to the radial direction of the optical disc 2 mounted on the clamper 4.

  The driver circuit 24 is a circuit configured by connecting the optical pickup 7, the thermal head 6, and various motor drivers to the controller 21 connected by bus to the host computer 20. Under such a circuit configuration, the controller 21 controls the irradiation timing and irradiation intensity of the laser light from the laser diode provided in the optical pickup 7, and the presence / absence of heat generation of each heating element of the thermal head 6, the heat generation timing, and the heat generation. The temperature and the like are controlled, and the timing of drive control signals for the spindle motor 3 and the sledge motor 23 to the various motor drivers are controlled. That is, the host computer 20 executes various arithmetic processes that operate according to the operation program stored in the ROM, and gives various drive control signals to the controller 21 under the control of the CPU that controls each part in a centralized manner. Based on the control signal, the controller 21 controls driving of each unit. In this case, the user creates input of write information to the label 1 by the thermal head 6 using the host computer 20 and a keyboard (not shown), and outputs a write signal based on the input information from the host computer 20 to the optical disc device 60. To do. At this time, the write information is temporarily developed in a memory buffer built in the optical disk device 60, and a write signal is output based on the write data developed in the memory buffer.

  FIG. 16 is a flowchart showing the flow of label printing according to the present invention. First, the optical disc 2 is removed from the optical disc apparatus 60, and a label 1 is set on the rotary table 5 by inserting, for example, a print attachment 50 as shown in FIG. 7 into the clamper 4 (S1). If the optical disk is inserted (NO in S2), the process proceeds to the optical disk mounting process (S8). If it is the print attachment 50 in step S2 (YES route in S2), the controller 21 receives the print data created by the host computer 20 (S3). The controller 21 converts the signal to be applied to the thermal head 6 (S4), and rotates the rotary table 5 at a low speed to detect the home position (S5). Next, the speed of the rotary table 5 is detected, and print data is printed on the label 1 by the thermal head 6 while controlling to maintain a constant speed (S6). Then, after the printing is finished, the rotation of the rotary table 5 is stopped (S7).

The disassembled perspective view of the optical disk and label of embodiment of this invention. The top view which shows the example of label printing of this invention. The side view of a general optical disc device. FIG. 2 is a side view illustrating a schematic configuration of a print attachment set in the optical disc apparatus according to the embodiment of the present invention. The disassembled perspective view for demonstrating in more detail the printing attachment 50 of FIG. The partial view at the time of comprising a rotary table and a pulley with a gear. The block diagram of the integrated printing attachment. The disassembled perspective view of the printing attachment of the 1st Embodiment of this invention. The perspective view which shows an example of the absolute position detection of the turntable 5. FIG. The figure explaining the positional relationship of a slit and a sensor in the rotary table 5 of FIG. The figure showing the relationship with a thermal head when an optical disk warps. The figure which corrected the curvature of the optical disk by applying pressure to the thermal head. The figure explaining the example which has arrange | positioned the elastic member to the rotary table. The figure showing the relationship between the temperature of a TC film, and transparency. The block diagram of the control system of the optical disk apparatus of this invention. The flowchart which shows the flow of the label printing of this invention.

Explanation of symbols

  1 label, 2 optical disk, 3 spindle motor, 4 clamper, 5 rotary table, 6 thermal head, 7 optical pickup, 9 pulley, 10 low-speed rotating motor

Claims (9)

A printing attachment comprising a rotary table compatible with at least an optical disc mounting portion,
A drive unit that rotates the rotary table at a predetermined rotation speed; and a recording unit that records information on a label placed on the rotary table. When recording predetermined information on the label, Instead, the printing attachment is mounted on the optical disk mounting portion, the label is set on the rotating table of the printing attachment, and then the predetermined information is recorded by the recording unit while rotating the rotating table by the driving unit. A printing attachment characterized by   The printing attachment according to claim 1, wherein the rotary table, the driving unit, and the recording unit are integrally formed by a casing.   The label is composed of a thermoreversible material in which the transparency and color tone of the label are reversibly changed by heat applied to the label, and the transparency or color tone is maintained in at least two forms at room temperature. The printing attachment according to claim 1.   The recording means includes a recording unit that generates a first temperature for shifting the label to a translucent state, and an erasing unit that generates a second temperature for shifting the label to a transparent state. The printing attachment according to claim 1, wherein the printing attachment is a printed attachment.   The printing attachment according to claim 1, wherein the center opening portion of the label and the mounting portion of the rotary table are provided with fitting portions that are fitted to each other.   Speed detection means for detecting the speed of the rotary table is provided on the circumference of the rotary table, and the speed detection means detects transmitted light from a slit formed on the circumference of the rotary table or reflected light from a reflecting plate. 6. The printing attachment according to claim 1, wherein the printing attachment is an optical sensor or a magnetic sensor that detects a magnetic change of a magnetic pattern.   Start position detecting means for detecting the rotation start position of the rotary table is provided on the circumference of the rotary table, and the start position detecting means is transmitted light from a slit formed in the circumference of the rotary table or reflected from a reflecting plate. 6. The printing attachment according to claim 1, wherein the printing attachment is an optical sensor for detecting light or a magnetic sensor for detecting a magnetic change of a magnetic pattern.   The printing attachment according to any one of claims 1 to 6, wherein, when the label is set on the turntable, an elastic member is further arranged between the turntable and the label.   9. An optical disc apparatus, wherein the print attachment according to claim 1 can be mounted, and the drive of the optical disc apparatus is stopped while the print attachment is being driven.

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