JPH01115597A - Aggregate sheet member of optical information record medium unit and manufacture thereof - Google Patents

Abstract

PURPOSE: To improve cutting precision of a recording medium and reproducing precision of information by forming an information track, and a mark serving as the reference of a position for cutting a card-shaped optical information recording medium unit, at an aggregated-sheet member formed by arranging the optical data recording medium unit. CONSTITUTION: In an aggregated-sheet member 1 formed by arranging a card- shaped optical information recording medium unit, a cutting mark 4 serving as the reference of a position for cutting the optical information recording medium unit, and an information track 104 are written. The cutting mark 4 is made to serve as a reference, and an optical data recording medium where the data track 104 is written is cut. It is thus possible to improve precision of parallelism and perpendicularity between one cut edge and the information track 104 and always keep the orientation of the information track 104 constant for high information reproducing precision by positioning the optical information recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cart-shaped information recording medium that optically reads information.

[Prior Art] In recent years, information has been reproduced using optical information recording carriers such as optical files and compact discs. Furthermore, recently, information reproduction using card-shaped optical information record carriers (hereinafter referred to as optical cards), which are more portable than these record carriers and have a relatively large capacity, has begun to attract attention. .

FIG. 8 is a schematic plan view showing an example of the recording format of the optical cart.

In the figure, a recording area 102 is provided on an optical cart 101 which is a record carrier, and the recording area 102 is formed by arranging a plurality of hunts 103. Further, each node 103 is formed by arranging a large number of information tracks 104, and each track 104 has an information capacity of about several tens to 100 hits. Further, each note is separated by a reference line (hereinafter referred to as an R line) 105. Note that arrow A is the moving direction of the optical card 101 during playback, and arrow C is the direction of information reading operation by the optical head during playback.

Such optical cards include, for example, types that allow for repeated recording, playback, and erasure, in which information is recorded based on the direction of magnetization, and types that allow for additional recording and playback, in which information is recorded using bit string patterns, for example. For example, there are types that can only be reproduced, in which information is recorded based on the magnitude of light reflectance, and they are used in forms that take advantage of their respective characteristics.

In addition, when producing a large number of cards on which the same information is recorded, it is preferable to use the above-mentioned read-only optical card (hereinafter referred to as an optical ROM card), which has a high S/N ratio and is easy to manufacture. be done.

The optical ROM card is manufactured, for example, as follows.

That is, for example, a low melting point metal such as Te or an organic dye such as cyanine or polymethine is laminated on a plastic substrate with a thickness of several hundred gm by vapor deposition or coating, and then a layer with a thickness of several hundred lumen is laminated on top of the plastic substrate with a thickness of several hundred gm. A protective film is formed by laminating an optically transparent plastic film. Information is recorded by irradiating it with an energy beam. Alternatively, as a simpler method, for example, paper or the like is used as the material for the optical ROM card, and the optical ROM card is used in a printing device such as a conventional printer.
Possible methods include scanning the M card material or recording information track by track on the optical ROM card material using a large number of arranged heads.

Figure 9 shows an optical ROM having the above recording format.
FIG. 1 is a schematic configuration diagram of a device for playing a cart.

In the figure, an optical cart 101 can be reciprocated in the direction of arrow A by a rotation mechanism 106. Information recorded on the optical card 101 is read and reproduced track by track by the optical card 111. First, light from a light source 107 such as an LED is focused by a lens system 108, and the optical cart 10
Illuminate 1. An image of the track of the optical card 101 is formed on a one-dimensional sensor array 110 by an imaging optical system 109. Since the optical cart 101 is moving in the direction of arrow A, the image of the information track on the sensor array 110 moves correspondingly. The sensor array 110 is read and scanned several times while each information track is imaged onto the sensor array 110. In this way, the recorded information of several information tracks in a certain band is reproduced, and when this is completed, the optical head 11
1 is appropriately moved in the direction of arrow C in FIG. 8 so that an information track in another target hand is imaged on the sensor array, and the recorded information is reproduced in the same manner as described above.

At this time, the information reading device, including its optical system, is set so that the movement of the rotation mechanism 106 and the direction in which the cells of the one-dimensional sensor array 110 are arranged are perpendicular. Also, optical card 101
When attaching the optical card to the rotating mechanism 106, the movement of the rotating mechanism 106 and the information track 10 are determined based on one side of the optical card.
4 is installed vertically. In other words, the parallelism or perpendicularity between the reference side of the optical card and the information track greatly influences the parallelism between the image of the information track 104 and the cell arrangement direction of the one-dimensional sensor array 110.

Conventionally, in order to make the information track and the reference side parallel to each other when manufacturing an optical card, first find a part such as the reference line 105 in the information recording area 102 that can serve as the reference, and then use a position parallelly moved by a predetermined interval as the reference. I was cutting it off as a part of it.

However, when the reference line 105 or the like is used to determine the position when cutting the card as in the above conventional example, the pit size of the reference line 105 is several pm to
It is difficult to detect because it is small, only a few pm, and information track 10 is difficult to detect because it is far from the cutting position, which forms one side of the card.
It becomes difficult to cut parallel or perpendicular to 4. Furthermore, in this case, the parallelism between the information track 104 and the line sensor 110 is not guaranteed when the optical card is inserted into the information reading device, making it difficult to reproduce information. Alternatively, each time an optical card is installed, the inclination of the information track 104 with respect to the line sensor 110 is detected and the information track 104 or the optical card 1 is detected.
It is necessary to correct the inclination by rotating 11, etc., and the configuration becomes complicated.

[Problems to be Solved by the Invention] In order to overcome the above-mentioned problems of the prior art, the present invention provides a method of cutting the optical A collection sheet member for a cart-shaped optical information recording medium that allows the information recording medium to be cut with high precision, and a card-shaped optical information recording that allows accurate information reproduction without complicating the configuration of an information reading device. The object of the present invention is to provide a method for manufacturing a medium.

[Means for Solving the Problems] The above objective is to provide a collection sheet member for cart-shaped optical information recording medium units, characterized in that the collection sheet member has marks serving as a reference for information tracks and card cutting portions. Manufacturing of an optical information recording medium, characterized in that the assembled sheet member of the optical information recording medium unit and the assembled sheet member of the cart-shaped optical information recording medium unit are cut based on the mark attached to the assembled sheet member. achieved by the method.

By cutting the aggregate sheet member based on the mark, desired cutting accuracy can be obtained, and by applying the mark at the time of recording ROM information, the mark can be applied more accurately and easily. That is, for example, when writing an information track, the collective sheet member is moved, for example, parallel or perpendicularly with respect to the information track, and a cutting mark is written;
Then, by using the cutting mark, for example, the cutting area can be specified easily and accurately by cutting using the line of the mark, the edge of the polygon, the vertex of the polygon, or the line connecting these, It is possible to ensure the accuracy of parallelism and perpendicularity between one side cut according to the mark and the information track. Further, the cutting mark may be written before the information track is written, and in this case, the assembly sheet member is formed along the line of the mark, the edge of the polygon, the vertex of the polygon, or the line connecting these. For example, information tracks can be written with parallel or perpendicular movement.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows one embodiment of the present invention, where l is a collective sheet member for each optical information recording medium, 2 is an information recording section, 3 is an area to be cut, and 4 is a cutting mark that serves as a reference when cutting. It is. The cutting mark 4 is written after writing the information track on the collecting sheet member and after the collecting sheet member is moved parallel or perpendicular to the information track. and/or after the cutting mark 4 is written, the assembly sheet member is moved parallel or perpendicular to the line of the cutting mark, the vertex edge of the polygon, or the line connecting the edge and the vertex of the polygon. An information track is written.

That is, the cutting mark and the information track are the same.

Written in a planar coordinate system. In contrast, conventionally, information has already been written on the collective sheet member, and after finding a new reference point for cutting, such as a reference line, the collective sheet member is moved in parallel and cut. Therefore, the coordinate system used for writing and the coordinate system used for determining the cut portion are different, and it is extremely difficult to match the two coordinate systems completely. Parallelism and perpendicularity between one side of the recording medium and the information track are not guaranteed.

Therefore, according to the present invention, the accuracy of the parallelism and perpendicularity between the cut side and the information track 104 is higher than in the past, and by positioning the optical information recording medium in the reproducing device, the information track The direction of 104 is always kept constant. In other words, since the orientation of the sensor array 110 can be set in advance to match the orientation of the information track 104, accurate information reproduction is possible without complicating the configuration of the reproduction apparatus.

Furthermore, although Fig. 1 shows the case where two or more optical cards are manufactured vertically and horizontally for one cart-like optical information recording medium assembly sheet member, it goes without saying that the number of optical cards is not limited to this. stomach. Regarding the number of cutting marks 4, although they are recorded at four vertices of the cutting area 3 in FIG. 1, they may be recorded at two locations if the shape and size of the optical card are constant.

The present invention is particularly effective in manufacturing optical cards with high recording density such as those that perform recording using a laser, and in particular, plain paper can be used as a material for optical ROM cards that are easy to issue, such as optical ROM cards. This method is effective in manufacturing optical ROM cards in which information is recorded on the paper using a laser beam printer and reproduced using a CCD.

[Embodiment 1] FIG. 2 is a diagram showing a first embodiment of the present invention. 1 is a collective sheet member of the optical information recording medium. Plain paper with a thickness of 0.2 mm was used as this material. Reference numeral 2 denotes an information recording section, and in the case of this embodiment, no processing is performed on this section. 3 is an area to be cut, and 4 is a cutting mark that serves as a reference when cutting.

Next, the assembled sheet member was set in a laser beam printer. The laser beam is scanned on the drum of the laser beam printer according to the information track and cutting mark data input to the laser beam printer, and the image shown in FIG. 3 is formed on the drum, and the image moves in the C direction. transcribed into.

The assembly sheet member on which the cutting marks and information tracks were written was cut with a cutter according to the cutting marks. When the cart-shaped optical information recording medium thus obtained was reproduced using a reproducing apparatus, good information reproduction was achieved. Note that the cutting mark 4 is not limited to the shape of this embodiment, and may be used as long as it can specify a cutting area.

FIGS. 3 to 7 show some other ways of making cutting marks.

In FIG. 3, the cutting area is directly provided as a cutting mark 4. Cutting can be done along this line.

In FIG. 4, L-shaped marks are recorded at at least two of the four vertices of the cutting area 3, and the line connecting the inner sides of the cutting marks 4 is defined as the cutting area 3.

In FIG. 5, the cutting mark 4 is a triangle, and a line connecting the vertices of the cutting mark 4 as shown in the figure is one side of the cutting area.

In FIG. 6, rectangles are alternately provided on both sides of the cutting area, and cutting is performed along the edges of the rectangles.

FIG. 7 shows the case where optical cards are manufactured in one row on the aggregate sheet member 1. The cutting area is just one side of the optical card,
The vertices of opposing cutting marks 4 are connected to form a cutting area.

Example 2 FIG. 3 shows a second embodiment.

Polymethyl methacrylate was used as the aggregate sheet member of the optical information recording medium. There is no particular restriction on the material used for this collective sheet member as long as it satisfies its function as a support.

Next, a polymethine dye was applied as a recording layer to the entire upper surface of the aggregate sheet member, and a polycarbonate resin was further laminated as an MR retaining layer. A light energy beam, such as a semiconductor laser, is scanned over this to record cutting marks 4 and information tracks 104. First, the optical head writes the cutting mark 4-1 while moving in the D direction, and when that is completed, the collective sheet member moves in parallel in the C direction to write the information track 104, and then the cutting mark 4-2 is written. It will be done. This will be repeated from now on.

When the optical information recording medium obtained by cutting the assembled sheet member on which cutting marks and information tracks are written according to the cutting marks, which was produced as described above, was played back by a playback device, a good playback signal was obtained. or obtained. At this time, the cutting mark is not limited to the shape of this embodiment, and it is sufficient that the cutting area can be specified.
Cutting marks such as those shown in FIGS. 3 to 7 are used in exactly the same manner as in the first embodiment.

[Effects of the Invention] The following effects can be observed by the above-described method for manufacturing a cart-shaped optical information recording medium assembly sheet member and a card-shaped optical information recording medium.

1. Cards can be cut accurately.

2. The parallelism and perpendicularity between the standard side of the card and the information track have become more accurate than before, improving the accuracy of information reproduction.

[Brief explanation of the drawing]

1, 2, 3, 4, and 5. FIG. 6 and FIG. 7 are explanatory diagrams each showing an embodiment of the cutting mark attached to the collective sheet member of the present invention. FIG. 8 is an explanatory diagram of the format of the optical card. FIG. 9 is a schematic configuration diagram of an optical card reader. 1, 2, 3, 4, and 5. 1 in FIGS. 6 and 7...A collection sheet member 104 for each optical information recording medium
...Information track in FIG. 8, 101...Optical card 102...Recording area 103...Band 104...Information track 105...Reference line In FIG. 9, 101...Optical cart 106...Rotation mechanism 107...Light source 108...Lens system 109...Imaging optical system 110...Sensor array 111...Optical head Fig. 2A Fig. 4r -------1 S factor Figure 6

Claims (12)

[Claims] (1) A collective sheet member formed by arranging card-shaped optical information recording medium units, which has an information track on which optical information is recorded and a mark that serves as a reference for the position at which the card-shaped optical information recording medium units are cut. A collective sheet member for optical information recording medium units, characterized by: (2) The collective sheet member of optical information recording medium units according to claim 1, wherein the mark is attached based on the information track. (3) The optical information recording medium unit assembly sheet member according to claim 1, wherein the information track is attached based on the mark. (4) A collective sheet member for an optical information recording medium unit according to claim 1, wherein the mark is attached to the collective sheet member by recording. (5) A collective sheet member for optical information recording medium units according to claim 4, wherein the mark is attached to the collective sheet member by printing. (6) The optical information recording medium according to claim 1, wherein the marks are selected from lines and polygons attached to at least two of the four vertices of the cutting position of the optical information recording medium. Unit assembly sheet member. (7) A collective sheet member for optical information recording medium units according to claim 1, wherein ROM information is provided by recording on each card-shaped optical information recording medium unit arranged on the collective sheet member. (8) An assembly sheet member for optical information recording medium units according to claim 7, wherein the ROM information is provided on each optical information recording medium unit by printing. (9) A method for manufacturing an optical information recording medium, which comprises cutting an aggregated sheet member of card-shaped optical information recording medium units based on marks attached to the aggregated sheet member. (10) The method for manufacturing an optical information recording medium according to claim 9, wherein the assembly sheet member is cut using a mark selected from a line of the mark, a vertex of a polygon, or an edge. (11) The method for manufacturing an optical information recording medium according to claim 10, wherein the mark is attached when recording ROM information. (12) The method for manufacturing an optical information recording medium according to claim 11, wherein the ROM information is attached to each optical information recording medium unit by printing.