JPS61283066A - Optical information recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent the position dislocation of the optical card by providing the pressuring means to pressure contact shiftably along the guide member at the guide member where the holding stand to hold a card-shaped optical information recording media is provided along the prescribed direction. CONSTITUTION:At a holding stand 6 to hold an optical card 5, the clearance a little wider than the thickness of a card 5 is formed between card retaining members 8 and 9, and the card 5 is inserted into the clearance. The holding stand 6 is slidably supported through bearings 14 and 15 to fixed shafts 16 and 17 and the shafts 16 and 17 are arranged along the A direction of an arrow. One edge of springs 27 and 28 for preventing the vibration is fixed to the holding stand 6 and at other end, rollers 29 and 30 are provided. The rollers 29 and 30 are abutted to a rail 31, and while the holding stand 6 is held shiftably in the A direction of an arrow, the holding stand 6 is pressed by the elastic force of the springs 27 and 28. Thus, the dislocation of the position in the B direction of an arrow can be suppressed when the card 5 reciprocates.

Description

Detailed Description of the Invention [Technical Field] The present invention records or reproduces information by moving a card-shaped optical information recording medium in a predetermined direction relative to an optical head that irradiates the recording medium with a light beam. The present invention relates to an optical information recording/reproducing device.

In the present invention, the optical information recording/reproducing apparatus refers to an apparatus for recording information on a medium as described above, an apparatus for reproducing information recorded on a medium, and an apparatus for performing both recording and reproduction.

[Prior art]

Conventionally, information has been recorded using light, and the recorded information has been read out in the form of a disk.

Various types such as card-shaped, tape-shaped, etc. are known. Among these, card-shaped optical information recording media (hereinafter referred to as optical cards) are expected to be in great demand as mediums with large storage capacities that are small, lightweight, and convenient to carry.

By the way, when recording or reproducing information on the optical card as described above, a mechanism is required to move the optical card relative to the optical head, but such a mechanism has conventionally been used with magnetic cards etc. The one shown in FIG. 6, which is often used, is well known. In FIG. 6, l is a card-shaped recording medium, 2 is a recording area, 3 is a recording or reproducing head, and 4
a.

4b, 4c, and 4d each form a pair, and at least one of the pairs is a conveyance roller having a driving force. A card-shaped recording medium (hereinafter referred to as a card) 1 is transported by transport rollers 4a to
4d and reciprocates in the direction of arrow A, and information is recorded or reproduced in the recording area 2 by the recording or reproducing head 3.

However, the mechanism described above has the drawback that the position of the card in the direction of arrow B may shift depending on how the card is inserted or during repeated reciprocating movements. Furthermore, there is also the drawback that slippage between the conveying roller and the card causes a shift in the moving speed in the A direction (hereinafter referred to as jitter). These drawbacks were not a major problem with cards using magnetic recording bands or barcodes because the track width in the direction of arrow B was large and the movement speed was slow.
In a large-capacity optical card of ~20 megabits, the information unit (hereinafter referred to as a bit) is as small as 5 to 10 Bm.
Since high accuracy is required, the above-mentioned drawbacks sometimes cause problems in recording and reproducing.

[Summary of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical information recording/reproducing device that is simple and inexpensive in structure and can move an optical card with high precision.

The above object of the present invention is to provide a guide member provided along a predetermined direction, a holding stand for holding a card-shaped optical information recording medium, and a movement of the holding stand to the guide member along the guide member. This is achieved by an optical information recording/reproducing device equipped with a pressing means that allows pressure contact.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIGS. 2(a) and 2(b) are schematic diagrams showing the structure of a first embodiment of the optical information recording/reproducing apparatus of the present invention, and are a perspective view, a plan view, and a front view, respectively.

Here, reference numeral 6 denotes a holding stand for holding the optical card, and a step 7 is provided on one side of the holding stand to form a gap slightly wider than the thickness of the optical card 5 between it and the card holding member 8.9. ing. The optical card 5 is inserted into this gap and is held by being pressed against the edge of the step 7 by a member 10.11 having a spring property of 1. Further, the holding stand 6 is provided with a protrusion 12 for stopping the inserted optical card 5 at a predetermined position and a notch 13 for facilitating the insertion and removal of the optical card.

Holes are drilled at both ends of the holding base 6, and the holding base 6 is slidably supported by fixed shafts 16 and 17 serving as guide members through bearings 14 and 15 made of a slippery material fitted into the holes. There is. The fixed shaft 16.17 is arranged along the direction of arrow A and is fixed to the chassis 22 by means of fixing devices 18, 19, 20.21. Here, the holding table 6 is given a driving force by the fixed belt 23 and moves in the direction of arrow A. Further, an optical head 24 is provided above the holding table 6 and records or reproduces information by irradiating the optical card 5 with a light beam. The optical card 5 moves in the direction of arrow B, stops at a desired position, and performs recording or playback.Also, when recording or playing back continuously, move the direction of arrow B in synchronization with the reversal of the moving direction of the optical card 5. Steps are sent in the direction.

In the configuration as described above, the holding base 6. Fixed axis 16.17
etc. have sufficient strength and the influence of deformation can be ignored, the positional deviation that occurs in the direction of arrow B when the holding table 6 reciprocates is mainly due to the fixed shafts 16, 17, bearings 14,
This is due to the gap (so-called backlash) that is essential to the sliding part between 15 and 15. Therefore, in this embodiment, the vibration prevention spring 2
The above-mentioned positional shift is prevented by pressing the holding base 6 with the 7° 28 to press against one side of the bearing and shifting the play in one direction. Spring for preventing vibration 27.28
One end is fixed to the holding table 6, and the other end is provided with smoothly rotating rollers 29 and 30. These rollers 29 and 30 abut against the rail 31 and press the holding table 6 by the elastic force of the springs 27 and 28 while keeping the holding table 6 movable in the direction of arrow A. With such a configuration, in this embodiment, when the optical card moves back and forth, the arrow B
It was possible to suppress the positional deviation in the direction to 5 gm or less. The bearing 14 described above has an elongated hole whose longitudinal direction is in the direction of the arrow B, and does not have the function of regulating movement in the B direction.

Further, the belt 23 described above moves the holding table 6 relative to the optical head 24 by a mechanism as shown in a schematic side view in FIG. Here, the belt 23 fixed to the holding base 6
is passed around a rotatable pulley 32 and a pulley 33 attached to a servo motor 34. Therefore,
The belt 23 moves in the direction of arrow A according to the rotation of the servo motor 34.
direction, and the holding table also moves in the A direction accordingly.

FIGS. 4(a) and 4(b) show the configuration of a second embodiment of the present invention, and are a plan view and a front view, respectively.

Here, the optical card holding means and the driving means for the holding stand are not shown as they are the same as in the first embodiment. In this embodiment, the spring 35, which has the same purpose as the first embodiment, is attached to a holding base 36.
It is incorporated inside the . The holder 36 that holds the optical card is connected to a fixed shaft 38 through a bearing, and also connected to a fixed shaft 39 through a fixture 40 having a built-in bearing or the like.

Therefore, the holding base 36 can be smoothly slid in the A direction. The convex portion of the holding base 46 is engaged with the concave portion of the fixture 40 so as to be slidable in the B direction. Holding stand 36 and fixture 4
There is a spring 35 between 0, a holding base 36 and a fixture 40.
This forces the essential backlash in the sliding part between the bearing built in and the fixed shaft 38, 39 in a certain direction. Therefore, when the holding table 36 makes a reciprocating linear movement in the A direction, the vibration in the B direction can be suppressed to a minimum.

FIGS. 5(a) and 5(b) show a third embodiment of the present invention in which a pressing means is provided on the guide side, and show a plan view and a front view, respectively. Here, the holding stand 42 that holds the optical card 41 is a roller 4.
3 to the guides 44 and 45, and the guide 4
5 is biased from the chassis 47 toward the holding base 42 by a spring 46. Therefore, the holding base 42 is a movable part smoothly in the direction of the arrow A, but because the guide 45 is pressed by the repulsive force of the spring 46, there is very little play in the direction of the arrow B.

The present invention can be modified in various ways in addition to the embodiments described above.

〔Effect of the invention〕

As described above, the present invention provides a pressing means for pressing the optical card holder against the guide member, thereby suppressing misalignment of the optical card and enabling highly reliable recording and reproduction. Furthermore, since the accuracy required for the members constituting the device is relaxed, it has the effect of reducing the manufacturing cost of the device.

[Brief explanation of drawings]

1, 2(a) and 2(b) are schematic diagrams showing the configuration of the first embodiment of the present invention, and FIG. 3 is a schematic diagram showing the drive mechanism of the holding base in the first embodiment. Figure 4 (a), (b)
5(a) and 5(b) are schematic diagrams showing the configuration of a third embodiment of the present invention, respectively, and FIG. 6 is a schematic diagram showing the configuration of a third embodiment of the present invention. FIG. 3 is a schematic diagram showing a card moving mechanism in the information recording/reproducing device. 5-m-optical card, 6--holding stand, 14.15--one bearing, 16, 17'--one fixed shaft, 24--one optical head, 27.28-one-sway prevention spring, 29.30--One roller, 31--Rail.

Claims (1)

[Claims] (1) In an optical information recording/reproducing device that records or reproduces information by moving a card-shaped optical information recording medium in a predetermined direction relative to an optical head, a guide member provided along the predetermined direction; An optical information recording/reproducing apparatus comprising: a holding stand for holding the recording medium; and a pressing means for pressing the holding stand against the guide member so as to be movable along the guide member.