JP2001338266A - Recording and reproducing device using optical recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording and reproducing device using an optical recording medium capable of the stable recording operation of high reliability at all times by preventing unnecessary elastic deformation from occurring, when recording information on a card-like optical recording medium. SOLUTION: This device is provided with an LD 5a, a CCD 5b, a body 5f of impact head and a light transmissive resin block 7a and the light transmissive resin block 7a has a receiving plane 7a2 to become one receiving plane of an optical recording medium (card) 4, in the case of pressing the other side of the card 4 with the main body 5f of impact head and attaching planes 7a1 and 7a3 for respectively locating the LD 5a and the CCD 5b at prescribed positions and has light transmissity, capable of transmitting light 7c of a single color.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical recording medium recording / reproducing apparatus for recording / reproducing a card-shaped optical recording medium most suitable for a prepaid card, a credit card, a cash card and the like.

[0002]

2. Description of the Related Art In today's society, various types of cards are used for purposes such as payment means for commerce and identification means.

[0003] Current prepaid cards, credit cards, cash cards, and the like have a magnetic recording portion called a magnetic stripe as a recording means, in which a balance amount, an ID number for confirming the identity, and the like are recorded. In, the balance obtained by subtracting the amount paid with the use of the card is changed and recorded at any time.

[0004] Such a card as a recording medium is convenient to carry and contributes to a so-called cashless society without troublesome cash transfer. The recording and reproduction of information on the magnetic recording portion of such a card is performed by moving a magnetic head in contact with it, as in a so-called magnetic tape recorder.

However, since the recording medium of the above-described card has a magnetic recording layer, it is possible to easily read and write the recorded contents, and therefore, it is easy to forge, and telephone cards and prepaid cards can be used. It is often forged in large quantities, which has become a social problem. In order to cope with such forgery, complicated magnetic recording systems and IC cards have been proposed in place of the conventional simple magnetic recording system, but they have a problem of requiring a cost and have not been widely used.

Further, a technique relating to a recording medium using a diffraction grating or a hologram as optical recording has been proposed, for example, one described in Japanese Patent Publication No. 7-97388. However, according to the configuration of the above-described technology, it is useful to identify whether the card is genuine or counterfeit, but further complicated information, such as the amount of the prepaid card, the password on the cash card, etc. And it was not suitable for recording card numbers and the like.

Conventionally, a complicated device is required to read such complicated information, and it has been difficult to realize it in terms of cost and reliability. Accordingly, the present applicant has developed a low-cost optical recording medium suitable for recording complicated information such as the amount of a prepaid card, a personal identification number or a card number in a cash card, and disclosed in Japanese Patent Application Laid-Open No. H10-198259. It is proposed as the technology described. The outline of the proposed technology is described in CGH (Computer Generated).
A hologram pattern called Hologram (computer generated hologram) is arranged on the surface or inside of the card-like medium, and the reader irradiates monochromatic light to the hologram pattern, and captures a diffraction image by transmission or reflection to obtain character information and graphics. The configuration was such that information recorded by the hologram pattern, such as information, was read.

Further, the present applicant has specifically proposed an optical recording medium recording / reproducing apparatus for reading information from or writing information to the optical recording medium in the technology disclosed in Japanese Patent Application Laid-Open No. 11-120299. ing.

[0009]

The structure of the conventional apparatus for recording on an optical recording medium described above is based on the fact that a CGH pattern disposed on an information recording section in an optical recording medium is formed by an impact pin driven by a solenoid. Information was recorded irreversibly by physically destroying it. A recording method using an impact pin is disclosed in Japanese Patent Application Laid-Open No. 10-1982 by the present applicant.
There is a technique disclosed in Japanese Patent Application Laid-Open No. 59-120 and Japanese Patent Application Laid-Open No. H11-120299, but as described below, there is a problem that a medium (card) is lifted during recording by an impact pin due to the structure of a recording / reproducing apparatus. Was left as. The problem to be solved by the present invention will be described below.

FIG. 1 shows an optical recording medium 1 used in an optical recording medium recording / reproducing apparatus disclosed in JP-A-11-120299.
FIG. 2 shows the internal configuration of the optical recording medium recording / reproducing apparatus 2.
FIG. 3 shows a recording operation on the optical recording medium 1 by the impact head 2f in the apparatus. In FIG. 1 illustrating the configuration of an optical recording medium (hereinafter, also referred to as a card) 1, a surface of a substrate 1c formed of a light transmitting resin is a laser beam irradiation surface 1b, and a recording area in which a plurality of CGH patterns are arranged. 1a is formed. Further, there may be a configuration in which the recording area 1a is formed not inside the surface of the substrate 1c but inside.

An aluminum reflection film 1d is formed on the back surface of the substrate 1c, and a UV protection film 1e is applied over the aluminum reflection film 1d.

Referring to FIG. 2 for explaining the internal structure of the optical recording medium recording / reproducing apparatus 2, the apparatus 2 uses an optical recording medium 1 inserted from an insertion portion 2h and a motor-driven transport belt 2c and a roller bearing (not shown). Thus, it is transported to a predetermined information write / read position. The write / read position is detected by the card 1 blocking the light path of the photodetector 2g from light. Also card 1
When the paper is discharged, the conveyor belt is driven in the reverse direction.

Referring to FIG. 3 for explaining the recording operation on the card 1, when the card 1 is at a predetermined position for writing / reading information, the optical axis of the laser beam irradiation device 2b and the optical axis of the laser beam irradiation device 2b on the reflection surface of the half mirror 3a. The optical axes of light rays that are perpendicularly incident on the imaging surface of the CCD 3b, which is an imaging device, are orthogonal to each other, and the plane including these optical axes is substantially perpendicular to the plane of the recording area 1a, which is the main plane of the optical recording medium 1. The optical system is arranged as follows.

At the time of reading information, the optical recording medium 1 is moved to a predetermined reading position by the above-mentioned transport means, while the optical system is not moved at a fixed position. Recording of information is performed by heating the thermal head or by irreversibly changing the hologram pattern of the recording area 1a to a state where no diffracted light is generated by physically destroying the hologram pattern by the pin 3c of the impact head 2f.

By destroying a specific hologram pattern (single or plural) in the recording area 1a of the card 1, for example, the balance amount of the prepaid card is zero, or the expiration date of the card is expired. Is recorded, and a warning is issued to the reader when the card is used at the next opportunity.

In addition, in the above-mentioned conventional apparatus, as shown in FIG. 3, regardless of whether the recording method is a thermal head or an impact head, the position on the card 1 to be imaged by the CCD 3b and the position to be erased by the impact head or the thermal head. They are arranged so that their positions match. Therefore, the recording and the recording confirmation can be performed at the same time.

In the conventional recording / reproducing apparatus, in which information is recorded and reproduced as shown in FIG. 3, a reproducing position (a laser for irradiating a hologram pattern) is set so that recording and reproducing can be performed simultaneously on one hologram pattern. Light irradiation spot position) and recording position (impact pin 3)
(the position of the hologram pattern where c protrudes). Since an image pickup system for performing reproduction exists on the opposite surface of the medium 1 which receives an impact due to the impact head 2f driven by the pins 3c, it is necessary to secure a clear space through which light for reproduction can be transmitted. The backing member for prevention cannot be arranged in contact with the card surface on the opposite side to the impact head 2f.

Therefore, at the time of recording by driving the impact pin 3c, the medium 1 is elastically deformed by the protruding force of the pin 3c accompanying the driving and rises and escapes from the pin tip,
There has been a problem that a stable and reliable recording operation cannot be performed.

As a second best configuration for solving the above-described problem, the distance between the recording position and the reproduction position on the card 1 is sufficiently large, and information is read from the recording area of the optical recording medium 1, and then, if necessary. A configuration and a method of transporting the card 1 to a recording position provided with a backing member at the time of impact pin driving are also conceivable. However, with the above-described configuration, new problems such as an increase in required space, an increase in cost due to the transporting means, and an increase in processing time required for recording and reproduction have occurred.

Even when heating by a thermal head is used for the recording means, the thermal head comes into contact with the surface of the card 1 and pushes (projects) during recording, so that the medium 1 is elastically deformed so as to escape. Therefore, there is a similar problem that a stable contact posture cannot be obtained between the card 1 and the thermal head, and a stable and highly reliable recording operation cannot be performed.

Therefore, the present invention is directed to a contact surface serving as a receiving surface on one side of the optical recording medium, particularly when the recording unit presses the other side of the optical recording medium; And an arrangement surface for arranging each at a predetermined position,
In addition, the optical recording medium is provided with an optical block having a light-transmitting property capable of transmitting the monochromatic light, so that it is possible to prevent the recording unit from pressing the optical recording medium more than necessary during recording, so that the optical recording medium is largely elastically deformed. It is an object of the present invention to provide an optical recording medium recording / reproducing apparatus which prevents the recording operation from being performed at all times and enables stable and highly reliable recording operation.

[0022]

In order to solve the above problems, the present invention provides an optical recording medium recording / reproducing apparatus having the following configuration. Hologram pattern (recording area)
Card-shaped optical recording medium (card, medium) 4 having 4a
Irradiating means (LD) 5a for irradiating a monochromatic light (incident light) 7c onto the hologram pattern 4a from one side, and a diffraction image obtained based on a reflected light (diffractive light) 7d by the irradiation of the monochromatic light 7c And the hologram pattern 4a
Imaging means (CC) for reproducing information recorded in
D) 5b, a recording unit (impact head body) 5f for performing recording by hitting or heating the hologram pattern 4a from the other surface side of the optical recording medium 4, and the recording unit 5f includes the optical recording medium 4 A contact surface (receiving surface) 7a2, which is a receiving surface on one side of the optical recording medium 4 when the other surface side is pressed, and the irradiating means 5a and the imaging means 5b are respectively arranged at predetermined positions. An optical block (light-transmitting resin block) 7a having an arrangement surface (light source mounting surface) 7a1 and an (imaging element mounting surface) 7a3, and having a light transmitting property capable of transmitting the monochromatic light 7c. An optical recording medium recording / reproducing apparatus 5 characterized in that:

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the recording / reproducing apparatus for an optical recording medium according to the present invention will be described below with reference to FIGS. In the following description, the description of the same components as those described as the configuration of the related art will be omitted, and the same reference numerals may be used. FIG. 4 is a plan view and a cross-sectional view of an optical recording medium used by the optical recording medium recording / reproducing apparatus according to one embodiment of the present invention. FIG. 5 is a perspective view of the optical recording medium recording / reproducing apparatus of the present embodiment. 4 and 5 are perspective views of the main part of the optical recording medium recording / reproducing apparatus, FIG. 7 is a sectional view of the main part of the optical recording medium recording / reproducing apparatus shown in FIG. 5, and FIG. 8 is an optical recording apparatus according to another embodiment of the present invention. FIG. 9 is a perspective view of a main part of a medium recording / reproducing apparatus.
Is a perspective view of a main part of an optical recording medium recording / reproducing apparatus according to another embodiment of the present invention, and FIG. 10 is a perspective view of a main part of an optical recording medium recording / reproducing apparatus of another embodiment of the present invention.

First, a description will be given with reference to a plan view and a cross-sectional view illustrating the structure of an optical recording medium (hereinafter, also referred to as a card) 4 used in a recording / reproducing apparatus 5 according to an embodiment of the present invention shown in FIG. Do.

The optical recording medium 4 is a card-shaped recording medium.
Information recording area 4a corresponding to optical information recording / reproduction
And an IC module 4f having another configuration for recording information can be mounted.

Next, in FIG. 5 which is a perspective view for explaining the schematic internal structure of the optical recording medium recording / reproducing apparatus 5 of this embodiment, an LD (Laser Diode) 5a, a CCD (C
An image pickup unit 5c composed of a charge coupled device 5b and a light-transmitting resin component as a light-transmitting medium is fixed to an apparatus housing (not shown) via a bracket 5d.

The medium 4, which is the above-mentioned card, is transported inside the apparatus while being held by the medium holding section 5e, and is reproduced by the image pickup unit 5c.
Recording is performed by It is also possible to adopt a configuration in which a thermal head (not shown) is mounted in place of the impact head 5f.

This apparatus uses three motors in the configuration shown in the figure, and the first motor M1
g to the medium holding unit 5e, and the second motor M2 conveys the medium holding unit 5e along the shaft 5h by a lead screw (not shown). The third motor M3 moves the impact head 5f in a direction orthogonal to the moving direction of the medium 4 as needed to move the recording position.

FIG. 5 shows the state of the recording / reproducing apparatus 5 when the medium 4 is inserted. That is, when the insertion of the optical recording medium 4 is detected by the first sensor S1 near the insertion port 5g, the first motor M1 is driven to rotate the roller 5i to convey the optical recording medium 4 to the medium holding unit 5e.

When the medium 4 moves to a predetermined position of the medium holding portion 5e, the second sensor S2 detects the position, and the plate disposed in the insertion port 5g below the medium 4 closes to close the insertion port 5g, and the medium is closed. 4 to a predetermined recording / reproducing position.

FIG. 6 to be described next is a perspective view for explaining a schematic internal structure of the apparatus 5 when the medium 4 is at a predetermined recording / reproducing position. Brackets and the like that support the imaging system unit 5c are not shown.

In the state shown in FIG. 6, the information of the recording area on the medium 4 is temporarily read by moving the medium 4 together with the medium holding portion 5e in the transport direction. If it is determined that the medium is an unauthorized medium (forged or falsified card), the medium 4 is ejected to the outside of the apparatus 5. If it is determined that the medium is a valid medium 4, recording and reproduction are performed as described below as necessary.

FIG. 7 shows the medium 4, the image pickup unit 5c, and the impact head 5 when information is recorded by the impact head 5f.
It is principal part sectional drawing showing the state of f. In the present apparatus 5, the hologram pattern 4 in the recording area of the recording object and the recording area of the reproduction object
a is arranged so as to coincide.

As shown in FIG. 7, the light-transmitting resin block 7a, which is the main structure of the image pickup unit 5c, has a light source mounting surface 7a1 on which the LD 5a is mounted, a receiving surface 7a2 that contacts the card 4, and a CCD 5b. Imaging element mounting surface 7a3.

The optical path of the reproduction light (the incident optical path 7c emitted from the LD 5a and the optical path 7d of the diffracted light reflected by the hologram pattern) inside the image pickup unit 5c is optimal in consideration of the refractive index of the light-transmitting resin block 7a. Designed to take the light path. The device 5 of the present embodiment reproduces information recorded on the hologram pattern 4a of the card 4 using the above configuration.

Further, referring to FIG.
f drives pin 7b by solenoid drive,
Information is recorded by destroying a specific hologram pattern in the recording area of the card 4. Pin 7 of impact head 5f
The leading end b is configured not to touch the receiving surface 7a2 even during a full stroke. Therefore, the receiving surface 7a2 will not be damaged even in the case of idling without the medium 4.

In this embodiment, a light-transmitting resin block 7a having a receiving surface 7a2 for receiving the card 4 mechanically.
Conventionally, the components for supporting the imaging system components such as CCD and LD and the components for preventing the floating of the medium are separate components. As a result, it is possible to realize a structure in which recording can be confirmed on the spot where the recording is performed, and to suppress the lifting of the medium 4 during recording.

The light-transmitting resin block 7a of the imaging unit 5c has a light source mounting surface 7 on which light enters from the LD 5a.
a1, a receiving surface 7a2 on the medium 4 side, and an image pickup element mounting surface 7a3 for receiving the diffracted light by the CCD 5b are mirror-finished, and the other surfaces are for preventing intrusion of disturbance light (stray light).
The surface is roughened and has a fine embossed finish like a cloudy glass. With the above configuration, it is possible to prevent disturbance light from entering, and to achieve an effect of achieving stable reproduction.

In the present apparatus 5, after the above-described recording, reproduction is performed to confirm that the recording has been correctly performed. If it is not confirmed that the information has been recorded by the imaging system, the information is recorded again. When the necessary recording is completed, the optical recording medium 4 is discharged out of the apparatus 5. When the discharge of the optical recording medium 4 is confirmed by the photodetector S1 as the first sensor, the transfer operation is stopped.

FIG. 8 shows the apparatus 5 of the present embodiment described above.
FIG. 2 is a perspective view illustrating an apparatus having a configuration different from the main point, and components not used in the description are not shown.
In the configuration shown in FIG. 8, the receiving surface 7a2 (concealed in FIG. 8) is configured to be rotatable around the rotary shaft 8a, so that the receiving surface 7a2 extends along the transported medium 4. 7a2 moves, the resistance due to contact with the medium 4 is reduced, and at the time of recording, the recording surface of the hologram pattern coincides with the axis of the impact pin, so that the receiving surface 7a2
Since the position and the inclination are determined stably and stably, the function as the receiving surface 7a2 which receives the protruding output while being movable is not impaired.

In the configuration shown in FIG. 8, the rotating shaft 8a is configured to be parallel to the main plane 8b of the card 4 and perpendicular to the carrying direction. However, a rotating shaft parallel to the carrying direction is also possible. It may be configured. Similarly, in the configuration of FIG. 8, the entire light-transmitting resin block 7a, which is the main structure of the imaging unit 5c, is rotatable. However, a configuration is provided in which at least a partial block including the receiving surface 7a2 is provided, and only the partial block is rotated. It may be movable.

According to the configuration shown in FIG. 8 described above,
Since the light-transmitting block 7a serving as the medium backing is movable along the medium 4 to be conveyed, there is an effect that smooth conveyance is possible.

FIG. 9 is an assembly perspective view of the image pickup unit in the device 5 according to the present embodiment, which has a different configuration from that of the above-described key change. In the configuration shown in FIG. 9, the light-transmitting resin block is composed of two members: a first block 9a having a mounting surface for the LD 5a and the CCD 5b, and a second block 9c having a receiving surface.

The rubber block 9b is interposed between the first block 9a and the second block 9c, and is assembled by a fixing screw 9d. In the case where the impact due to the impact head pin driving is large, it is possible to reduce the impact transmitted to the imaging system element by sandwiching the rubber sheet 9b between the blocks 9a and 9c which are separated into two parts as shown in FIG. Become.

The material of the block 9c including the receiving surface includes
This makes it possible to use glass having higher hardness, and has an advantageous effect in terms of durability.

As described above, the structure shown in FIG. 9 has a structure in which the light transmissive block is composed of two members and is assembled with the rubber sheet interposed therebetween. Therefore, even when the impact by the impact pin is strong, the rubber sheet is formed of the cushioning material. Since it plays a role, it has the effect of reducing the impact transmitted to the imaging component.

FIG. 10 is a perspective view of a main part of an apparatus having a different configuration from that of the apparatus 5 of this embodiment.
In the configuration shown in FIG. 10, a light-transmitting resin block of the imaging unit and a member on the same side as the imaging unit in the medium holding unit are configured as an integrated block 10a.

The medium 4 inserted in the device 5 is supplied to the second medium holding unit 10 below the medium holding unit (on the impact head side).
b and the block 10a, which is integral with the medium 10b, is conveyed to the recording / reproducing position together with the medium holding section in the state of being retained, and the recording / reproducing state is maintained. Can be done. In FIG. 10, an arrow marked “conveying direction” indicates a direction in which the medium holding unit 10b and the medium 4 are conveyed in an integrated state.

According to the configuration shown in FIG. 10 described above, the medium backing is integrated with the medium holding section,
When the medium is inserted, the medium and the backing portion are brought into close contact with each other, and all the processes up to discharge can be performed in the same state, so that more stable recording can be performed.

[0050]

As described above in detail, the present invention particularly provides an abutting surface which is a receiving surface on one side of the optical recording medium when the recording means presses the other side of the optical recording medium, The recording means is provided at the time of recording by providing an arranging surface for arranging the irradiating means and the imaging means at predetermined positions, respectively, and having an optical block having a light transmitting property capable of transmitting the monochromatic light. Since it is possible to prevent the optical recording medium from being pressed more than necessary, it is possible to prevent the optical recording medium from being largely elastically deformed, to enable a stable and reliable recording operation at all times, and It is possible to provide an optical recording medium recording / reproducing apparatus capable of clearly confirming a recording trace of a hologram pattern in a field.

[Brief description of the drawings]

FIG. 1 is a plan view and a sectional view of a conventional optical recording medium.

FIG. 2 is a perspective view of a conventional optical recording medium recording / reproducing apparatus.

FIG. 3 is an explanatory diagram of a recording / reproducing operation performed by a conventional optical recording medium recording / reproducing apparatus.

FIG. 4 is a plan view and a sectional view of an optical recording medium used by the optical recording medium recording / reproducing apparatus according to one embodiment of the present invention.

FIG. 5 is a perspective view of an optical recording medium recording / reproducing apparatus according to an embodiment of the present invention.

6 is a perspective view of a main part of the optical recording medium recording / reproducing apparatus of FIG.

FIG. 7 is a sectional view of a main part of the optical recording medium recording / reproducing apparatus of FIG. 5;

FIG. 8 is a perspective view of a main part of an optical recording medium recording / reproducing apparatus according to another embodiment of the present invention.

FIG. 9 is a perspective view of a main part of an optical recording medium recording / reproducing apparatus according to another embodiment of the present invention.

FIG. 10 is a perspective view of a main part of an optical recording medium recording / reproducing apparatus according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 4 optical recording medium, card, medium 4a information recording area (hologram pattern) 5 optical recording medium recording / reproducing device 5a LD (irradiating means) 5b CCD (imaging means) 5f impact head (recording means) 7a light-transmitting resin block ( Optical block) 7a1 Light source mounting surface (arrangement surface) 7a2 Receiving surface (contact surface) 7a3 Image sensor mounting surface (arrangement surface) 7c Incident light (monochromatic light) 7d Diffracted light (reflected light)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06K 19/06 G11B 7/0065 5D090 G11B 7/0065 11/18 11/18 B42D 15/10 511 // B42D 15/10 511 G06K 19/00 DF term (reference) 2C005 HA30 HB04 HB09 JA18 JB08 LA29 2K008 AA04 AA13 BB00 EE04 FF27 GG05 HH01 HH28 5B035 BA03 BB03 BB05 BB12 BC02 5B058 CA33 KA01 KA04B35 CC03 KA01 KA04B35 CC02 AA03 BB03 CC01 CC03 CC04 DD03 FF36

Claims (1)

[Claims] An irradiation means for irradiating a monochromatic light onto the hologram pattern from one surface side of a card-shaped optical recording medium having a hologram pattern, and a diffraction image obtained based on the reflected light by the irradiation of the monochromatic light. Imaging means for imaging and reproducing information recorded in the hologram pattern; recording means for recording by hitting or heating the hologram pattern from the other side of the optical recording medium; When pressing the other surface side of the optical recording medium, a contact surface serving as a receiving surface on one surface side of the optical recording medium, and an arrangement surface on which the irradiating means and the imaging means are respectively arranged at predetermined positions. And an optical block having a light transmitting property capable of transmitting the monochromatic light.