JPS63265378A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To secure the accurate recording/reproducing actions of information despite the deformation of a recording medium and at the same time to ensure the smooth transport of cards for improvement of the operability of a card feed mechanism, by forming a card slit in parallel to the bending direction of an information recording medium. CONSTITUTION:A card slit 29 is formed in parallel to the bending direction of an optical card 4, i.e., to a sloping surface 24b of a guide rail 24. The card 4 is inserted through the slit 29 and detected by a card insertion sensor 8. Thus a drive roller 12 is rotated and the card 4 is held between a loading roll 17 and a loading pinch roller 18 to be loaded. In this case, the card 4 is shifted in parallel to a rubbing surface 24a and forcibly bent by holder pieces 20-23 and a roll 12 for formation of a surface having satisfactory flatness on the upper surface of the roll 12. Then the card 4 can be recorded and reproduced by a head. Furthermore, the card 4 and the surface 24b are set almost in parallel with each other. When the card 4 is ejected, the loading process is reversed. In such a way, the information is accurately recorded and reproduced and the card 4 is smoothly inserted and ejected.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for recording information on a recording medium and/or reproducing information recorded on a recording medium, and in particular, A recording medium that records and/or reproduces information by moving a head unit for processing information relative to a card-shaped or sheet-shaped recording medium and the recording medium. The present invention relates to an information recording/reproducing device with an improved feeding mechanism.

Such an information recording/reproducing device is suitably used as an optical information recording/reproducing device or a magnetic information recording/reproducing device.

[Background of the invention]

Conventionally, various types of recording media such as card-shaped, disk-shaped, tape-shaped, etc. are known as recording media used for recording information using a light beam and reproducing the recorded information using the light beam. ing. Among them, optical information recording media formed in the form of cards (hereinafter referred to as "optical cards")
) is expected to be in great demand as a recording medium that is easy to manufacture, has good portability, and has good accessibility.

In an optical card, the information tracks are formed in a straight line, and a large number of such information tracks are arranged in parallel in a predetermined area on the card surface. Therefore, in an information recording/reproducing device using an optical card as a recording medium, the light beam spot is continuously moved relative to the information track on the surface of the optical card, and at this time information is not recorded or reproduced. After the light beam spot has been moved a predetermined distance, the light beam spot is moved a predetermined distance on the surface of the optical card in a direction transverse to the direction of the information track.

At this time, no information is recorded or reproduced.

Then again relative to the direction of the information track 8! At this time, information is recorded or reproduced, and in the same manner, relative movement in the direction of the information track and relative movement in the direction across the direction are alternately repeated a desired number of times.

In addition to Chichijoki, there is a playback-only optical card that can copy recorded patterns in large quantities and at high speed using photolithography technology.

This has a structure in which a non-silver salt pattern layer and an At reflective film are provided between the substrate and the protective layer, and metal is deposited during electroless plating only in the areas exposed to light, which become recording bits and have a high reflectance. Information is recorded in two values: low reflectance area and low reflectance area. (The size of a bit is from several microns to 100 microns.) Normally, for high-speed playback, a line sensor such as COD is used to reproduce dozens of pits and hundreds of bits at a time (one track).
Main scanning is performed, and sub-scanning is performed in a direction across the track. After moving a predetermined distance, the reproducing head is moved a predetermined distance in the direction of the gold information track and performs sub-scanning in the direction across the track again. Thereafter, similarly, the relative movement in the direction across the information track and the relative movement in the direction of the information track are alternately repeated a desired number of times.

Incidentally, since optical cards are generally manufactured using flexible materials such as polycarbonate, vinyl chloride resin, acrylic resin, etc., they are subject to various mechanical pressures, heat, etc. during use, for example, during storage. After long-term use, the optical card inevitably becomes warped or stiff. When recording and reproducing information using an optical card modified in this manner, various inconveniences may occur.

This inconvenience means that the principal ray of the light beam emitted from the optical head does not return to the optical head normally due to the undulation of the optical card, or if the optical card is used only for playback, only one image is formed on the CCD line sensor. Problems like the above can be solved by forcibly deforming the card using at least three rollers (pressing roller 90°92 and drive roller 94) as shown in Figure 9. Flatness at the recording and/or playback position can be maintained, and the problem can be solved. Moreover, since the optical card is forcibly deformed, the optical card cannot be inserted or ejected smoothly, or the operability of insertion is reduced. In other words, in Fig. 1, there is no problem because it is not curved when it is inserted, but it is curved when it is discharged, so a discharge roller is provided to return it to the inlet.
This means that you need to lift the tip of the card as shown by the dotted line.

[Purpose of the invention]

The present invention was made in view of the problems of the prior art described above, and its purpose is to accurately record and reproduce information even when the recording medium is deformed, and to enable smooth card feeding. An object of the present invention is to provide an information recording/reproducing device having a feeding mechanism with excellent operability.

[Means for solving problems]

According to the present invention, the above object is achieved by moving a flexible information recording carrier in a forcibly curved state relative to a recording and/or reproducing head, thereby recording and/or reproducing information.
or an information recording/reproducing device for performing reproduction, wherein the direction of insertion of the information recording carrier into the device and/or the direction of ejection from the device is determined by a tangent to an end of the information recording carrier in the curved state. This is achieved by an information recording/reproducing device characterized in that the directions are almost the same.

In addition, in this specification, "information recording and reproducing device" is used.

It is treated as a device that can record and/or reproduce information. Therefore, it goes without saying that the present invention is not limited to devices that can both record and reproduce information.

〔Example〕

Hereinafter, embodiments of the present invention will be described specifically and in detail based on the drawings.

Here, all examples of information generating devices for read-only optical cards will be explained.

FIG. 1 is an internal perspective view showing an embodiment of the information extraction device according to the present invention. In the figure, the head feeding mechanism is omitted.

1#'i shown in the figure is the optical head body [double-dashed line].

It has a rectangular shape and is made of die-cast material. The head body l has an illumination system and an imaging system described below. 2 is an illumination light source consisting of an LED or the like. Reference numeral 3 denotes an illumination optical system for condensing the light emitted from the illumination light source 2 onto the information recording surface 4a of the optical card 4. When an LED is used as a light source for illumination, the light emitting part of the LED usually has a size of about several hundred microns, and can be regarded as a uniform surface light source. Therefore, the illumination optical system 3 can illuminate a certain area of the information recording surface 4& of the optical card 4 (ie, an area containing a plurality of pieces of information or information tracks).

The thus illuminated information recording surface 4a is transmitted to a line sensor 7 such as a COD via an imaging optical system 5 and a reflecting mirror 6.
Upper KM@! I am forced to do it.

The line sensor 7 has light receiving elements arranged parallel to the head moving direction X, and sequentially scans (main scans) information on optically corresponding portions of the information recording surface 4a and converts it into an electrical signal.

Reference numeral 8 denotes a card insertion detection sensor that detects that the optical card 4 is inserted and drives the motor 9.

It is installed perpendicularly to the insertion port. The motor 9 transmits power to the drive roller gear 11 via the reduction gear lO, drives the drive roller 12, and idler #-? 13,14.
15 to the loading roller gear 16;
The loading roller 17 is driven. 58 is above the loading roller 17 and loading roller 1
7 is a loading pinch roller which is urged by the card feeding body (not shown) and rotatably supported by a shaft. 19 is a reed above the driving roller.The card feeding body (not shown) is urged by the driving roller 12 and rotated by the card feeding body. The drive pinch roller is pivotably supported. Both the loading pinch roller 18 and the driving pinch roller 19 are located on the opposite side of the information recording surface 4a from the reference end 46 of the optical card. 20,
21, 22, and 23 are located parallel to the drive roller, and the distance between the drive roller and the drive roller is narrower than the thickness of the original card 4, and the position is such that the card is forcibly bent in the feeding direction. The presser foot is rotatably supported on the card feeding body, which is located outside the information recording surface 4& when the card is fed. 24 is a guide rail. The inner side 24& of the rail 24 is the reference end 4 of the optical card 4.
A slope 24b is provided along the sliding surface of the slider 24a along the movement of the card feeder. Sensors 25 and 26 for reversing the card feeding direction, which are composed of photo interrupters and the like, are in contact with both ends of the guide rail 240.

It is provided perpendicularly to the card feeding direction Y.

If the reversing sensor 25 or 26 is placed in front of the specified position, there is a risk that the optical card may be reversed even though it is in the information recording position, and if it is placed in the rear of the specified position, it may come off the roller and become unable to be reversed. be. In other words, providing a margin before and after the predetermined position leads to a reduction in the amount of information recorded.

In addition, if a drive member with good controllability is used, it may lead to a cost increase or a decrease in the dent recovery speed. Therefore, in order to improve positional accuracy, it is provided perpendicularly to the card feeding direction.

Reference numeral 27 denotes a leaf spring, which is located at a position that biases the optical card 4 toward the guide rail 24 and biases the optical card 4 only when the optical card 4 is outside the position where information can be reproduced. Reference numeral 28 denotes a leaf spring, which is located at a position that biases the optical card 4 toward the guide rail 24 and always biases the optical card 4 when it is in the information playback 5J enabled position.

Reference numeral 29 denotes an insertion slot, which is provided parallel to the front direction of the optical card, that is, parallel to the slope 24bK of the guide rail 24.

FIG. 2 is a plan view of the optical card 4. In the figure, 4m
is the information recording surface, and information is recorded in two values: high reflectance area and low reflectance area.The upper side is a little larger than the presser frame 21.22 compared to the outer shape of the card, and the lower side is Push piece 2
0.23 and the drive pinch roller 19 is also a little larger, and the left and right are the drive roller 12 and presser pieces 20, 21,
At the m4bu reference end, which is an information recording area, is a little larger than the distance υ from 22° to 23, and binary information is recorded in a pattern with respect to this reference end. 4C is the sliding surface of the leaf springs 27 and 28.

FIGS. 3(-) to 3(f) are cross-sectional views of FIG. #I1 viewed from direction A. The operation will be explained with reference to this. In addition, IKG
! The reference numerals used are the same as those in FIG.

Figure 3 (&) shows the optical card 4 being inserted.

The card passes through the insertion slot 29, and the card insertion detection sensor 8 detects the insertion of the card and drives the motor 9 shown in FIG.
clockwise direction in the figure), reduction gear 10. The drive roller 12 is rotated via the roller drive gear 11, and the loading roller 17 is rotated via the idler gear 13.14.150-dying roller gear 16. When the optical card is inserted, it is sandwiched between the loading roller and the loading pinch roller, and loading of the card begins. Since the loading pinch roller 18 drives only the side opposite to the reference end 4b of the optical card 4, the tip of the optical card 4 faces left, and the left tip slides on the sliding surface 24m of the guide and trail 24. It is loaded onto the drive roller 12 almost parallel to the slope 24b of the guide rail 24 (the inclination of the slope will be described later). (The state shown in FIG. 3(b)) Next, the optical card 4 is loaded between the driving roller 12 and the driving pinch roller, and at this time, the optical card 40 is pushed by the leaf spring 27 to the rear side guide rail of the reference end 4b. 24
The card is pressed against the sliding surface 241 of the guide rail 24, and the card becomes completely parallel to the sliding surface 241 of the guide rail 24.
．． Sent to 23.

Next, the optical card 4 is pressed and engaged with the T pieces 22 and 23, and the optical card 4 is forcibly bent by the presser pieces 20, 21, 22, 23 and the drive roller 12. (10-odd microns) makes it possible to create a surface with sufficient flatness.

At this time, the rear end of the card is separated from the slope 24b of the guide rail, and the card and slope 24b are almost parallel to each other. From this position, information can be reproduced using the head on the information recording surface 4a, resulting in sub-scanning. Hand moving away from presser frame 20°21! At flt, the information recording surface 4a is located on the upper surface of the drive roller, and this area becomes the sub-scanning range. (Figure 3(,)
and (d)) Next, the sub-scanning is completed and the head is sent to the next track. Then, the optical card 4 is further fed, and the shifter motor 9 is reversed by a detection signal from the card feed reversal sensor 26. (Fig. 3 (-)) The card is returned by reversing the motor, and is reversed again by the detection signal of the card feed reversal sensor 25. By repeating the above process a predetermined number of times, the card is returned. (Fig. 3-) and (f)) In addition, when ejecting the card, the motor 9 is reversed (counterclockwise in the figure) and rotated in the opposite direction to loading. It can be discharged by performing the process.

Next, I will explain how much oil is required and how the card moves accordingly.

No standard has been established for optical cards, and here, the standard JI8B 9560 (Tarenot card with magnetic stripe) will be used for explanation.

In JI8, the maximum anti-shi amount is set as 2 cabinets when placed on a plane.

Here, as shown in Figure 4, a constant R is applied in the longitudinal direction of the card.
Maximum warpage jia = Longitudinal dimension when warped at 2m b =
In order to force the card of 85.6 ■ to bend by 1, it is necessary to bend it by more than the amount of reversal.

FIG. 5 is a diagram showing forced bending by three rollers with a roller spacing of C. When a card is fed by such a roller, the card does not touch each of the three rollers at one point due to its elasticity, but instead wraps around each roller and is fed. To make it easier to feed, the card is bent at one point (the center of the drive roller), and the rest is straight and touches the two rollers, and the card is fed. In the card shown in Figure 4, the difference between the amount of warpage at a position C away from the center and the maximum amount of warp is the value d shown in Figure 5, and the reverse angle of the card when it is forcibly bent is -1A. You can do what you want.

If the radius of the warp in FIG. 4 is R and the thickness of the card is t, then 2(a-t) where m=0.7481 m=2w* b=*85.
By substituting 6sse c=10-, from the above, the card with maximum warp Ji2 m is row 2-spacing 1
It can be seen that in order to forcibly bend the card with a roller of 0 m, it is necessary to bend the card by about 0.07 points of dζ, and the card is sent with a tilt of about 0.4 fist.

From the above, it is possible to determine the area that does not come in contact with the card during information recording or playback of the optical card, and also the relative positional inclination of the three rollers, head inclination, or detection sensor inclination to ensure smooth insertion and ejection. .

FIG. 6 is a view of a ninth embodiment showing a case where the optical card is inserted vertically, as opposed to the case where the optical card is inserted horizontally in the previous embodiment. When inserting a card with your right hand, it is easier to insert it if it faces slightly inward, so when viewed from above, the card faces slightly inward as shown in Figure 7, and by bending it in that direction, you can make the card stand up. In some cases, there is also the advantage of being able to use space effectively. The same effect can be obtained for the left hand by curving it in the opposite direction to the right hand.

FIG. 8 shows two card reversal detection sensors of the above embodiment.
This is an example in which a leaf switch is provided on the edge of the Odo Interagueta. By providing the movable contact piece 100 substantially perpendicular to the direction of movement of the card, the accuracy of detecting the position of the optical card is improved as in the case of using a photointerrupter.

At the same time, the circuit is simplified, contributing to cost reduction.

Father, what is the direction of curvature when forcing a card to deform?

In the embodiments of this specification, a convex shape with respect to the head portion is illustrated, but the present invention is not limited to this, and includes a concave curved shape with respect to the head portion.

It is also conceivable that by curving it into a concave shape, the installation of the insertion port and the insertion operation become easier.

〔Effect of the invention〕

As described above in detail and in detail, the present invention is applicable to the insertion and ejection directions of the insertion slot of the information recording main device.

Since the information recording medium is bent in substantially the same direction as the tangential direction of the end when it is curved along the moving direction, the insertion and ejection operations of the medium can be performed smoothly.

[Brief explanation of the drawing]

Figure 1g1 is an internal perspective view showing one embodiment of the information reproducing device according to the present invention, Figure 2 is a plan view of the optical card, and Figure 3 (a).
~(f) is a sectional view of FIG. 1 viewed from the entry direction, FIG. 4 is a side view of the card, FIG. 5 is a side view of the card that has been forcibly bent, and FIG. FIG. 7 is a plan view of FIG. 6, FIG. 8 is a side view of another embodiment of the present invention, and FIG. 9 is a side view of a conventional example. l... Optical head body, 4... Optical card, 12...
Drive roller, 24... Guide rail, 29... Insertion port. Representative Patent Attorney Minoru Yamashita Figure 6 Figure 7

Claims (1)

[Claims] (1) Information recording and reproduction in which information is recorded and/or reproduced by moving a flexible information recording carrier in a forcibly curved state relative to a recording and/or reproduction head. In the device, the direction in which the information recording carrier is inserted into the device and/or the direction in which it is ejected from the device is substantially the same as the tangential direction of the end of the information recording carrier in the curved state. An information recording and reproducing device characterized by: