DE19725250A1 - Treatment of compact discs and CD-ROMs to reduce scattered light - Google Patents

Abstract

Treatment of compact discs (CDs) to reduce irritating scattered light from the laser beam or data recording in CD-ROMs and similar items comprises coating the read side on the non-written (15) outer edge with a medium (M) with a not completely coated, translucent or limited transmission layer ((M1-M3) containing a complimentary colour to the laser. Also claimed are the above treatment medium and an apparatus for treating CDs and CD-ROMs as above.

Description

The invention relates to a method and devices and Agents for the treatment of compact discs, such as CDs, CD-ROMs and similar data storage, especially for their partial Coating, to reduce stray light from the laser beam the scanning system, to improve the sound image and Increase in the recorded and reproduced sound volume CD's and the amount of information that can be read out treated CD's, CD-ROM's or similar data storage.

Attempts have been made for many years, that in itself already very good sound and the sound volume or the To further improve sound reproduction from CD's optimize, especially in the so-called "high end area", with particularly high quality music systems.

Various proposals have already been made for this, however cannot convince everyone yet.

So after [1.] = magazine: "stereoplay" 1/97, page 56, commercially z. B. relatively expensive fluorescent mats offered, with whose help "something imprecise sounding Players "to" more bass stiffness and slimmer Figure "should be helped.

According to [2.] = magazine: "stereoplay" 5/97, page 22, middle, the CD's with a slightly concave, scattered light swallowing, green colored plastic plate pressed.

In contrast, it is from [3.] = magazine: "STEREO" 1/96, Page 144, known that CD's sound better when you have theirs The edge is colored green. Here, with a green pen, one of red scanning laser, to which it is exactly complementary is. For lasers in the infrared range it is proposed here the outer edge of the CD at an angle - preferably at an angle  of 36 degrees and additionally with matt black Cover adhesive varnish.

This should "more homogeneity, basic tone and spatiality" be achieved.

There has been a green one on the market since 1990 Water-based paint marker, labeled "CD STOP LIGHT "to reduce laser light scatter, see [4.] = catalog: "Audio Advisor, Summer 1994 Sale Catalog ", excerpt.

In [5.] = magazine: "stereoplay" 2/97, among other things recommended to treat CD's with several layers of hairspray, so that they are "less aggressive, rounder in the bass and springy" sound.

Alternatively - also to other "suggestions for improvement" - is also suggested herein, "the outside and inside edges sanding the CD's first and then with a green one To paint foil painters "so that the CD sounds" less harsh ".

All known measures, devices and means are either relatively expensive, cumbersome to use and / or only insufficiently effective.

The object of the present invention is therefore a Methods, devices and means for the treatment of Compact discs (CD's), CD-ROMs and similar data storage propose reducing the vagabond or irritating scattered light from the scanning laser beam corresponding CD player or CD-ROM or CD-WROM Drives - and thus their playback quality and the Readable amount of data - on relatively simple and inexpensive Way is achieved.

This object is achieved with the in claims 1, 5, 6 and 11 included methods, devices and means achieved.

Advantageous further developments and refinements of Invention are included in the additional claims.  

The proposed procedure for the treatment of Compact Discs (CD's) to reduce stray or irritating scattered light from the scanning laser beam Scanning system and thus to improve the sound image and the volume of sound and the spatial depth of the music of thus treated CD's or the recordable data volume of CD-ROM's and similar data storage, looks essentially before that the CD to be treated on its peripheral surface and on the reading page on the outer edge area not described is covered or coated with an agent (M) which a not fully opaque, translucent or transparent, d. H. limited translucent order results. This covering means (M), or the one produced with it Coating is said to add a total of one to the scanning laser light have complementary color.

According to the proposed method, the respective CD ( 1 ) is to be provided with the covering means on its peripheral surface ( 11 ) and on the reading side ( 15 ) on the outer edge region not described, and possibly also on the inner region of the reading side not described (M) are coated in order to cover the entire sound spectrum or to ensure the optimal data yield in full.

If the coating (M1, M2, M3) is applied all around in a uniform form by rotating the CD ( 1 ) or by evenly moving around the application contour with the application body ( 200 ), a particularly uniform and uniform sound image results.

In particular, an agent (M) should be used for coating be essentially an organic Solvent (LM), a binder (BM) and at least a colorant (FM) the one - preferably green - Coating results, and possibly surfactants (T) and / or further additives (Z).  

If the result is a green coating, this will result assumed that the scanning laser had a red laser beam as used in most players becomes.

The invention is therefore based on this color combination illustrated and described in detail without however referring to this to remain confined.

A proposed device for the treatment of compact discs (CD's), to reduce the stray or irritating scattered light from the scanning laser beam of a scanning system and thus to improve the sound image and the sound volume as well as the spatial depth of the music, the CD's treated with it or the detectable data volume from CD-ROMs and similar data storage, consists of a writing instrument or a writing instrument-like holder ( 2 ), which has a free or a capillary ink storage and a, preferably outwardly or inwardly wedge-shaped, application tip ( 21 , 22 ). Wedge-shaped ( 21 ) on the outside, especially if a vertical coating position is provided exclusively or primarily and a wedge-shaped tip ( 22 ) that has an - possibly off-center - notch ( 22 ), especially if the front and the outer ring-shaped coating (M1, M2) by hand and / or together in one operation, with the applicator ( 2 ) placed at an angle - such as, for. B. shown in Fig. 2 - should take place. The application tip ( 21 , 22 ) should preferably have a diameter of 1 to 4 mm and protrude freely from the tip holder ( 20 ) at least to the extent of the plate thickness, so that the circumferential end face ( 11 ) of the CD ( 1 ) can also be easily touched by lateral contact with the usually wick-like application body ( 2 ) can be coated.

In a further addition to the invention, the device should consist of a writing instrument or a writing instrument-like holder ( 2 ) and a compass or a compass-like device ( 3 ) with a pen holder ( 321 ) for the writing instrument or the holder ( 2 ).

In addition, the device can or should be further developed advantageously by having a centering insert ( 4 ) with a centering ( 43 ) for the central insertion of the compass or compass-like device ( 3 ). This centering insert ( 4 ) should be loose, easily detachable and rotatable in the central bore ( 10 ) of the CD ( 1 ) and have a recessed center as a centering ( 43 ).

If the device has a compass or a compass-like device ( 3 ), this or such should be designed and dimensioned such that the writing instrument or the pen-like holder ( 2 ) used therein lies in the radii of the inner and outer regions ( 12 , 13 ) is essentially vertical or inclined on the CD ( 1 ) in a manner inclined to the wedge bevels ( 222 , 223 ) and can be opened to such an extent that the end face ( 11 ) or the outer edge of the CD ( 1 ) also extends from the side surfaces ( 23 ) of the application tip ( 21 , 22 ) or of the corresponding inner wedge surface ( 222 , 223 ) can be touched and coated. It is also advantageous here if the compass or the compass-like device ( 2 ) has an adjusting means ( 33 ), preferably an adjusting spindle ( 331 ) running perpendicularly or transversely to the compass axis, thereby thereby on the one hand an exact limitation of the coating radii and on the other hand a secure fixation the set diameter remains guaranteed and unwanted covers, e.g. B. in the area of the storage zone can be safely avoided.

The agent according to the invention for the treatment of compact discs (CD's), to reduce vagabond or irritating scattered light from the scanning laser beam Scanning system and thus to improve the sound image and the volume of sound and the spatial depth of the music thus treated CD's or the detectable or off or deliverable amount of data from CD-ROM's and similar  Data storage, should preferably be composed in such a way that the smear after drying is translucent or transparent, d. H. translucent, remains and that that Colorant (FM) at least one to the scanning laser has complementary - preferably green - dye. In the proposed agent, the solvent (LM) in essential ethanol and the binder (BM) essentially be a phenol-formaldehyde resin.

As a colorant (FM) is essentially a dye Group "Basic Green 1" or CI-42040 can be used. The solvent (LM) can also be particularly advantageous Mixture of ethanol and 1-methox-propanol-2.

The agent (M) should also be a surfactant (T) or a surfactant Contain mixture, which is preferably a perfluorinated alkyl ester can act.

It has proven to be particularly advantageous if that Colorant (FM) a mixture of "Basic Green 1" and "Solvent Yellow 162" - approximately in a ratio of 5: 1.

Using some examples and some illustrations some advantageous embodiments of the invention below described in more detail.

Framework example 1

60 to 98% by weight of solvent (LM),
3 to 10% by weight of binder (BM),
4 to 18% by weight of colorant (FM) and possibly
0 to 10 wt .-% surfactants (T) and / or other additives.

Framework example 2

75 to 90% by weight of solvent (LM),
4 to 6% by weight of binder (BM),
10 to 14 wt .-% colorant (FM) and
0.05 to 2 wt .-% surfactants (T) and / or other additives.

Embodiment

82.4% by weight of solvent (LM),
5% by weight of binder (BM),
12.5% by weight of colorant (FM) and
0.1 wt .-% surfactant (T) and / or other additives (Z).

The components used can be used to prepare the By means of (M) pure or in pre-made mixtures with each other or used or mixed with each other.

The proposed solutions have a remarkable effect Improvements across the frequency range accordingly Hi-fi systems and an increase and improvement of data Playback of CD-ROM's and similar data storage in Computer equipment.

The figures according to the invention are intended to be illustrated by means of Devices are illustrated.

Here show:

Fig. 1, a CD with a complete device according to the invention,

Fig. 2, a device with centering and application device,

Fig. 3, a tapered outwardly wedge-shaped applicator tip,

Fig. 4, a bottom view according to the tip. Fig. 3,

Fig. 5, an inward tapered tip and

Fig. 6, a bottom view according to the tip. Fig. 5.

The device shown in FIG. 1 essentially consists of a writing device-like holder 2 with an application tip 21 . In the central bore 10 of the CD 1 , a centering insert 4 formed in one piece from a centering core 42 and a stop disk 41 is arranged in an easily detachable manner, in the center 43 of which the centering tip 311 of a compass 3 engages. The centering leg 31 and the holding leg 32 of the compass 3 , which is also provided with a bearing head 34 and with a turning handle 35 , are mounted such that they can be adjusted relative to one another in the bearing head 34 . Both legs 31 and 32 are connected to one another by an adjusting means 33 or by its adjusting spindle 331 in such a way that the respectively desired adjusting radius can be easily produced and reliably maintained by turning the adjusting wheel 332 and thus the adjusting spindle 331 firmly connected to it. On the retaining leg 32, an adjustable pin holder 321 is mounted, the application device 2 is fastened with the fastening means 322 and is held securely. The respective coating areas M1, on the front side 11 of the CD 1 or M2, in the outer coating area 12 or also M3, in the inner coating area 13 are produced by direct contact and by rotating movement of the application device 2 or of the application body 200 . If necessary, the spacer collar 14 can also be provided with a coating if this is desired for further optimization.

The centering device 5 according to FIG. 2 has a centering mandrel 52 which is mounted in the bore 10 of the CD 1 so that it can rotate easily and a centering plate 51 for holding and fixing the CD to be treated.

This centering device 5 can optionally also be part of a plastic sleeve for CD's or be arranged on a separate support 54 by means of centering bearings 53 .

The application device 2 , which is set here at an oblique angle, has an application body 200 with an application tip 22 .

In Figs. 3 have to 6 illustrated applicator body 200 in tip holders 20 held order peaks 21 and 22, the chisel-shaped wedge tips 211 or notched inner wedge edge 221 of the outer wedge-shaped surfaces 212, as shown in FIGS. 3 and 4, or of the inner wedge surfaces 222 and 223 , as shown in FIGS. 5 and 6.

Reference list

19th

Compact Disc = CD, CD-ROM u. Ä.

10th

Bore (from

1

)

11

Face / circumferential surface (from

1

) =
M1 first coating area / order

11

12th

outer coating area / ring =
M2 second coating area / application acc.

12th

13

inner coating area / ring =
M3 third coating area / application acc.

13

14

Spacer

15

Reading page

2nd

Application device / writing device / = writing device-like cold

20th

Top version

200

Order body, general

21

Order tip with outer wedge

211

Chisel tip (from

21

)

212

Wedge surface (from

21

)

22

Order tip with inner wedge

221

inner wedge edge (from

22

)

222

first wedge surface (from

22

)

223

second wedge surface (from

22

)

23

Side surface (s) (of

21

,

22

)

3rd

Rotation aid = compass / compass-like device

31

Centering leg (from

3rd

)

311

Centering point (an

31

)

32

Holding leg (from

3rd

, For

2nd

)

321

Pen holder (at

32

)

322

Fasteners (at

321

)

33

Adjusting means

331

Adjusting spindle / rotating spindle

332

Adjusting wheel

34

Bearing head (from

3rd

)

35

Twist grip (on

3rd

)

4th

Centering insert

41

Stop disc

42

Centering core

43

Centering / deepening / center

5

Centering device

51

Centering plate

52

Centering mandrel

53

Centering bearing

54

Edition

Claims (19)

1. Method for the treatment of compact discs (CD's), for reducing the stray or irritating scattered light of the scanning laser beam of a scanning system and thus for improving the sound image and the sound volume as well as the spatial depth of the music of the CD's treated with it or of the recordable and deliverable data volume from CD-ROMs and similar data storage, characterized in that
that the CD ( 1 ) to be treated is covered on its circumferential surface or end face ( 11 ) and on the reading side ( 15 ) on the outer edge region (not described) with a means (M) which is not fully opaque, translucent or has limited light transmission Order (M1, M2, M3) results
and that the covering means (M) has a color complementary to the scanning laser. 2. The method according to claim 1, characterized in that the respective CD except on its peripheral surface ( 11 ) and on the reading side ( 15 ) on the non-described outer edge area also on the non-described inner area of the reading side ( 15 ) with the cover Agent is coated. 3. The method according to claim 1 or 2, characterized in that the coatings (M1, M2, M3) all around in a uniform shape by rotation of the CD ( 1 ) or by uniformly driving around the contour of the order with the application body ( 200 ). 4. The method according to any one of the preceding claims, characterized, that an agent (M) is used for coating that essentially from an organic solvent (LM), a binder (BM) and at least one green Dye (FS) and any other additives (Z). 5. Device for the treatment of compact discs (CD's), for reducing the stray or irritating scattered light of the scanning laser beam of a scanning system and thus for improving the sound image and the sound volume as well as the spatial depth of the music of the CD's treated thereby or of the recordable and output-capable data volume from CD-ROMs and similar data storage devices, characterized in that it consists of a writing instrument or a writing device-like holder ( 2 ) which has an ink storage device and an application tip ( 21 , 22 ), preferably wedge-shaped outwards or inwards . 6. Device for the treatment of compact discs (CD's), for reducing the stray or irritating scattered light of the scanning laser beam of a scanning system and thus for improving the sound image and the sound volume as well as the spatial depth of the music of the CD's treated thereby or of the recordable and dispensable data volume from CD-ROM's and similar data storage devices, characterized in that they consist of a writing instrument or a writing instrument-like holder ( 2 ) and a compass or a compass-like device ( 3 ) with a holder or with a pen holder ( 321 ) for the writing instrument or the holder ( 2 ). 7. The device according to claim 5 or 6, characterized in that it has a centering ( 43 ) for the central insertion of the compass or the compass-like device ( 3 ). 8. The device according to claim 7, characterized in that the centering ( 43 ) on a loose, easily detachable and possibly rotatable in the central bore ( 10 ) of the CD ( 1 ) insertable centering insert ( 4 ) is arranged and a recess as the center having. 9. Device according to one of claims 5 to 8, characterized in that the compass or the compass-like device ( 3 ) is designed and dimensioned such that the writing instrument or the pen-like holder ( 2 ) used therein in the inner and outer regions to be coated essentially vertical or corresponding to the slope of the wedge surfaces ( 222 , 223 ) on which the CD ( 1 ) stands and can be opened to such an extent that the end face ( 11 ) of the CD ( 1 ) also extends from the side surfaces ( 23 ) of the application tip ( 21 , 22 ) can be touched and coated. 10. Device according to one of claims 5 to 9, characterized in that the compass or the compass-like device ( 3 ) has an adjusting means ( 33 ), preferably with an adjusting spindle ( 331 ) running perpendicular to the compass axis. 11. Agents for the treatment of compact discs (CD's), for Reduction of vagabond or irritating Scattered light from the scanning laser beam of a scanning system and thus to improve the sound and Sound volume as well as the spatial depth of the music of the thus treated CD's or the detectable and output data volume from CD-ROM's and the like Data storage, characterized, that it is composed in such a way that the smear after the drying remains translucent or translucent and that the colorant (FM) has at least one for scanning Has laser complementary dye (FM1). 12. Composition according to claim 11, characterized, that the solvent (LM) is essentially ethanol and the binder (BM) is essentially a phenolic Formaldehyde resin is. 13. Composition according to claim 11 or 12, characterized, that the colorant (FM) is essentially a dye the group "Basic Green 1" or CI-42040. 14. Composition according to one of claims 11 to 13, characterized, that the solvent (LM) is a mixture of ethanol and 1-methox-propanol-2. 15. Agent according to one of claims 11 to 14, characterized, that it contains a surfactant (T) or a surfactant mixture and that the surfactant (T) is a perfluorinated alkyl ester is.   16. Composition according to one of claims 11 to 15, characterized, that the colorant (FM) is a mixture of dyes from the groups "Basic Green 1" and "Solvent Yellow 162" is. 17. Agent according to one of claims 1 to 16, characterized in that it consists of:
60 to 98% by weight of solvent (LM),
3 to 10% by weight of binder (BM),
4 to 18% by weight of colorant (FM) and possibly
0 to 10 wt .-% surfactant (T) and / or other additives (Z). 18. Composition according to claim 17, characterized in that it consists of:
75 to 90% by weight of solvent (LM),
4 to 6% by weight of binder (BM),
10 to 14 wt .-% colorant (FM) and
0.05 to 2 wt .-% surfactants (T) and / or other additives (Z). 19. Composition according to claim 18, characterized in that it consists of:
82.4% by weight of solvent (LM),
5% by weight of binder (BM),
12.5% by weight of colorant (FM) and
0.1 wt .-% surfactants (T) and / or other additives (Z).