JPH1027458A - Disc label printing method and apparatus, and optical disc - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly and satisfactorily print a label by transferring a toner image to a transfer belt in an electrophotographic system and transferring this toner image onto the surface of an optical disk. SOLUTION: A toner image is imparted in accordance with a printing pattern to the transfer belt 25 in the electrophotographic system by using an image making device 11. Subsequently, the toner image imparted to the transfer belt 25 is nonelectrically transferred with heat and pressure to the optical disk 1 conveyed by a disk conveying device 13 by using a transfer device 12. By this method, since the transfer of the toner image to the optical disk 1 is nonelectrically performed, a different dielectric constant of each part of the optical disk 1 does not influence the uniformity of the toner transfer. Consequently, evne when there are differences between individual parts of the optical disk in dielectric constant, the toner transfer to each part of the optical disk 1 is uniformly carried out, thus performing the label printing uniformly and satisfactorily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk label printing method and apparatus for printing a disk label such as an optical disk using an electrophotographic method, and an optical disk.

[0002]

2. Description of the Related Art An optical disk is provided with a reflective film formed by depositing gold, aluminum, or the like on a resin molded substrate of polycarbonate or the like, and protects the reflective film with an ultraviolet curable resin or the like for preventing oxidation of the reflective film. It has a structure with a membrane. In this optical disc, uneven data recording pits are formed on the surface of the substrate, and a reflective film is provided thereon. In this optical disc, an index display indicating recording contents and a label having various designs are printed on the reflective film or the protective film.

[0003] Label printing of an optical disk is performed by screen printing or offset printing using an ultraviolet curable ink. However, in these printing methods, a plate making process for manufacturing a printing plate is performed as a preparation process for printing. Required, and many types of equipment are required in this plate making process.

On the other hand, in label printing of an optical disk, the use of an electrophotographic system can shorten the printing process and simplify the printing apparatus.
No. 96 proposes to adopt an electrophotographic method using toner when providing a printing film between a reflective film provided on a recording surface of a disk substrate and a protective film for protecting the reflective film. .

[0005]

However, the prior art using electrophotography for label printing on an optical disk has the following problems. The optical disc has a portion provided with a reflection film and a portion not provided with a reflection film, and the dielectric constant differs between these portions.

When label printing is to be performed on the surface of an optical disk by using an electrophotographic method, a space at the time of toner transfer is formed between a portion provided with a reflection film and a portion not provided with the reflection film due to the difference in dielectric constant. As a result of the different electric field strengths, it is difficult to apply a uniform label printing to both parts.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for performing label printing on a disk by using an electrophotographic method, in which toner is uniformly transferred to each part of the disk to perform uniform and good label printing.

[0008]

According to a first aspect of the present invention, there is provided a label printing method for a disk for printing a label on a disk, the method comprising: applying a toner image to a transfer medium by an electrophotographic method; Non-electrically transferring the applied toner image to the surface of the disk.

According to a second aspect of the present invention, there is provided a disk label printing apparatus for printing a label on a disk, comprising: an image forming apparatus for applying a toner image to a transfer medium by an electrophotographic method; And a transfer device for non-electrically transferring the applied toner image to the surface of the disk.

According to a third aspect of the present invention, in the second aspect of the present invention, the transfer medium is made of a resin material.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the transfer medium is made of a PTFE resin material.

According to a fifth aspect of the present invention, in the third aspect of the present invention, the transfer medium is made of a polyimide resin material.

According to a sixth aspect of the present invention, in the second aspect of the present invention, the surface of the transfer medium is made of a material subjected to a release treatment.

The present invention according to claim 7 provides the invention according to claims 2 to 6
In the present invention described in any one of the above, the transfer medium may further comprise an endless transfer belt.

The present invention according to claim 8 provides the present invention according to claims 2-6.
In the invention according to any one of the above, the transfer medium may further comprise a transfer belt wound from a feeding device to a winding device.

According to a ninth aspect of the present invention, in the optical disk, labels are printed on both the portion where the reflection film is provided and the portion where the reflection film is not provided.

According to a tenth aspect of the present invention, labels are printed on both a portion provided with a reflective film and a portion not provided with the reflective film by using the method according to the first aspect. Things.

According to the present invention, the following effects are obtained. A toner image is temporarily applied to a transfer medium by an electrophotographic method, and the toner image applied to the transfer medium is non-electrically transferred to a disk by heat, pressure, or the like. Since the transfer of the toner image to the disk is performed non-electrically, the difference in the dielectric constant of each part of the disk does not affect the uniformity of the toner transfer. Therefore, even if there is a difference in the dielectric constant between each part of the disk, the toner can be transferred uniformly to each part of the disk, and uniform and good label printing can be performed. That is,
Uniform and good label printing can be performed on both the portion where the reflection film is provided and the portion where the reflection film is not provided.

When the transfer medium is made of a PTFE-based or polyimide-based resin material or a material whose surface has been subjected to a release treatment, the releasability of the toner is improved, and the toner is transferred from the transfer medium to the disk. Transferability can be improved.
The transfer medium may be in the form of a sheet, a film, or the like.

A transfer belt whose transfer medium is endless,
Alternatively, by using a transfer belt that is wound from the feeding device to the winding device, the toner can be continuously transferred from the transfer medium to the disk, and the productivity can be improved.

[0021]

FIG. 1 is a schematic diagram showing a first embodiment of a label printing device, FIG. 2 is a schematic diagram showing a second embodiment of a label printing device, and FIG. 3 is printing on a protective film of an optical disk. FIG. 4 is a schematic view showing a state, and FIG. 4 is a schematic view showing a state of printing on a reflection film of an optical disk.

(First Embodiment) (FIGS. 1, 3, and 4) As shown in FIG. 1, a label printing apparatus 10 prints a label on an optical disc 1 by using an electrophotographic method. As shown in FIG. 3, the optical disc 1 has a structure in which a reflective film 1B is provided on a substrate 1A, and a protective film 1C is provided on the reflective film 1B. And the label printing device 1
0 can be printed on the protective film 1C of the optical disk 1 (FIG. 3) or (b) printed on the reflective film 1B of the optical disk 1 (FIG. 4).

The label printing device 10 includes an image forming device 11
, A transfer device 12 and a disk transport device 13.

The image forming apparatus 11 includes a photosensitive belt (photosensitive member) 2
1, a charging device 22, an exposure device 23, a developing device 24, a transfer belt (transfer medium) 25, and an electrostatic transfer device 26, and a toner image is applied to the transfer belt 25 by an electrophotographic method.

The photosensitive belt 21 moves in an endless orbit, and the charging device 22 charges the surface of the photosensitive belt 21. The exposure device 23 performs image exposure according to a predetermined print pattern on the charged surface of the photosensitive belt 21 using a laser exposure device or the like, and charges the exposed portion of the charge on the surface of the photosensitive belt 21 applied by the charging device 22. Is eliminated by a photoconductive phenomenon to form an electrostatic latent image. Exposure device 23
May be an exposure using a document of a print pattern, or may be an exposure in accordance with a print signal output from a computer in which the print pattern is registered. The developing device 24 applies a charged colored powder or colored liquid toner (negative charge) to the surface of the photosensitive belt 21 and develops the electrostatic latent image to obtain a toner image. The toner is
It is attracted by the electric field of the electrostatic latent image to become a visible toner image. The transfer belt 25 moves endlessly around the photosensitive belt 21, and the electrostatic transfer device 26 electrostatically transfers the toner image obtained by the development of the photosensitive belt 21 to the transfer belt 25. The electrostatic transfer device 26 is, for example, a transfer belt 25
And a corona of the opposite polarity to that of the toner. As a result, a toner image is applied to the transfer belt 25. The photosensitive belt 21 is provided with a cleaning device 27.
The transfer belt 25 has a cleaning device 28.

The transfer device 12 includes a pair of sheet rolls 3.
The transfer belt 25 is wound around one of the sheet rolls 31. Sheet roll 3
Numerals 1 and 32 are disposed on both sides of the transport path of the optical disk 1 which is transported by the disk transport device 13 and squeeze the optical disk 1 so that the above-described toner image applied to the transfer belt 25 is instantaneously applied to the surface of the optical disk 1. Non-electrical transfer and fixation by heat and pressure.

The transfer belt 25 includes (a) PTF
A material made of an E-based resin material, (b) a material made of a polyimide-based resin material, and (c) a material made of a material having a surface subjected to a release treatment can be used.

The label printing method by the label printing apparatus 10 is performed according to the following procedures (1) and (2). (1) Using the image forming device 11, a toner image according to a print pattern is applied to the transfer belt 25 by an electrophotographic method.

(2) The transfer device 12 non-electrically transfers the toner image applied to the transfer belt 25 to the optical disc 1 conveyed by the disc transfer device 13 by heat and pressure.

The printing according to the above (2) can be performed on the protective film 1C of the optical disk 1 (FIG. 3) or on the reflective film 1B of the optical disk 1 (FIG. 4). 3 and 4
In either case, printing is performed on the reflective film 1B of the optical disc 1.
Can be applied to both the outer peripheral portion provided with the inner peripheral portion and the inner peripheral portion not provided (FIGS. 3 and 4). 3 and 4, reference numeral 3 denotes a toner, 4 denotes a printing film, and 4 denotes a printing film.
A is the printing film on the outer peripheral side where the reflection film 1B is provided, 4B
Is a print film on the inner peripheral side where the reflective film 1B is not provided.

Therefore, according to the present embodiment, the following:
Has the effect of A toner image is temporarily applied to the transfer belt 25 by an electrophotographic method, and the toner image applied to the transfer belt 25 is non-electrically transferred to the optical disk 1 by heat, pressure, or the like.
Since the transfer of the toner image to the optical disk 1 is performed non-electrically, the difference in the dielectric constant of each part of the optical disk 1 does not affect the uniformity of the toner transfer. Therefore, even if there is a difference in the dielectric constant between each part of the optical disc 1, the toner can be uniformly transferred to each part of the optical disc 1 and uniform and good label printing can be performed. That is, uniform and good label printing can be performed on both the portion where the reflection film 1B is provided and the portion where the reflection film 1B is not provided.

Since the transfer belt 25 is made of a PTFE-based or polyimide-based resin material or a material whose surface has been subjected to a release treatment, the toner releasability is improved, and the transfer belt 25 is moved from the transfer belt 25 to the optical disk 1. The transferability of the toner to the toner can be improved. Note that the transfer belt 25 may be in the form of a sheet, a film, or the like.

When the transfer belt 25 is formed of an endless transfer belt, the transfer of the toner from the transfer belt 25 to the optical disk 1 is continuously performed, and the productivity can be improved.

(Second Embodiment) (FIG. 2) The difference between the label printing device 40 of the second embodiment and the label printing device 10 of the first embodiment is that the transfer belt 41 replaces the transfer belt 25 of the label printing device 10. Is only used. The transfer belt 41 is made of a raw roll material such as a PTFE-based resin material or a polyimide-based resin material. The transfer belt 41 is wound from a feeding device 42 to a winding device 43, and is transferred from the photosensitive belt 21 by the electrostatic transfer device 26 in the feeding process. The toner image is electrostatically transferred, and thereafter, the toner image is non-electrically transferred and fixed to the surface of the optical disc 1 by the transfer device 12 by heat and pressure.

[0035]

【Example】

(Example 1) In the label printing apparatus 10, PTFE
A transfer belt 25 is formed by processing a sheet having a thickness of 100 μm of the system resin into a belt shape, and the image forming apparatus 11 adjusts the transfer voltage and current of the electrostatic transfer device 26 to transfer the toner image from the photosensitive belt 21 to the transfer belt 25. The electrostatic transfer was performed, and the toner image was non-electrically transferred and fixed from the transfer belt 25 to the optical disc 1 while adjusting the temperature and the nip pressure of the sheet rolls 31 and 32 in the transfer device 12. As a result, it was possible to obtain uniform and good printing with no difference in printing state between the portion where the reflection film 1B was provided and the portion where the reflection film 1B was not provided.

The above-described printing on the optical disk 1 was performed on both the surface of the reflective film 1B and the surface on which the protective film 1C was provided on the reflective film 1B. In each case, it was good by adjusting the nip pressure.

(Example 2) In the label printing apparatus 10, a 100 μm-thick polyimide resin sheet processed into a belt shape was used as a transfer belt 25, and the transfer voltage and current of the electrostatic transfer device 26 were changed in the image forming apparatus 11. The toner image is electrostatically transferred from the photosensitive belt 21 to the transfer belt 25 while being adjusted, and the toner image is transferred from the transfer belt 25 to the optical disc 1 while adjusting the temperature and the nip pressure of the sheet rolls 31 and 32 in the transfer device 12. The transfer and fixing were performed non-electrically. As a result, the reflection film 1B of the optical disc 1
It was possible to obtain uniform and good printing with no difference in the printing state between the portion provided with and the portion not provided.

The above printing on the optical disk 1 was performed on both the surface of the reflective film 1B and the surface on which the protective film 1C was provided on the reflective film 1B. In each case, it was good by adjusting the nip pressure.

Example 3 In a label printing apparatus 40, a PTFE-impregnated glass cloth (composite thickness of about 80 μm) having a 50 μm thick glass cloth base material and having good releasability by surface treatment with PTFE was used as a raw roll. The photosensitive belt 21 is adjusted by adjusting the transfer voltage and current of the electrostatic transfer device 26 in the image forming apparatus 11.
Performs electrostatic transfer of the toner image to the transfer belt 41 from the
Temperature of the sheet rolls 31 and 32 in the transfer device 12;
While adjusting the nip pressure, the toner image is transferred to the transfer belt 4.
1 was transferred to the optical disc 1 electrically and fixed. As a result, it was possible to obtain uniform and good printing with no difference in printing state between the portion where the reflection film 1B was provided and the portion where the reflection film 1B was not provided.

The above printing on the optical disk 1 was performed on both the surface of the reflective film 1B and the surface on which the protective film 1C was provided on the reflective film 1B. In each case, it was good by adjusting the nip pressure.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific structure of the present invention is not limited to the embodiments, and the design may be changed without departing from the scope of the present invention. The present invention is also included in the present invention. For example, in the label printing apparatus 10, the transfer belt 25 is removed,
Alternatively, the label printing device 40 from which the transfer belt 41 has been removed is used as the image forming device 11 of the label printing devices 10 and 40, the transfer medium of the present invention is used as the photosensitive belt 21 of the image forming device 11, and the transfer device 12 uses this transfer medium. The toner image applied to the photosensitive belt 21 may be non-electrically transferred to the surface of the optical disc 1.

The transfer medium of the present invention is not limited to a belt shape, but may be a drum shape or the like.

[0043]

As described above, according to the present invention, when performing label printing on a disk using an electrophotographic system,
The toner can be uniformly transferred to each part of the disc, and uniform and good label printing can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a first embodiment of a label printing apparatus.

FIG. 2 is a schematic diagram illustrating a second embodiment of the label printing apparatus.

FIG. 3 is a schematic diagram showing a printing state on a protective film of an optical disc.

FIG. 4 is a schematic diagram showing a state of printing on a reflective film of an optical disk.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 optical disk 1B reflective film 10 label printing device 11 image forming device 12 transfer device 25 transfer belt (transfer medium) 40 label printing device 41 transfer belt (transfer medium) 42 feeding device 43 winding device

Claims (10)

[Claims] 1. A method for printing a label on a disk, the method comprising the steps of: applying a toner image to a transfer medium by an electrophotographic method; and applying the toner image applied to the transfer medium to a non-electrical surface of the disk. A label printing method for a disk. 2. A label printing apparatus for a disk for printing a label on a disk, comprising: an image forming apparatus for applying a toner image to a transfer medium by an electrophotographic method; And a transfer device for non-electrically transferring to the surface of the disc. 3. The transfer medium according to claim 2, wherein the transfer medium is made of a resin material.
A label printing apparatus for the disc according to the above. 4. The label printing apparatus for a disk according to claim 3, wherein the transfer medium is made of a PTFE resin material. 5. The label printing apparatus for a disk according to claim 3, wherein the transfer medium is made of a polyimide resin material. 6. The label printing apparatus for a disk according to claim 2, wherein the transfer medium is made of a material that has been subjected to a release treatment. 7. The label printing apparatus for a disk according to claim 2, wherein the transfer medium is an endless transfer belt. 8. The label printing apparatus for a disk according to claim 2, wherein the transfer medium comprises a transfer belt wound from a feeding device to a winding device. 9. An optical disk having a label printed on both a portion where a reflection film is provided and a portion where a reflection film is not provided. 10. An optical disk having a label printed on both a portion where a reflection film is provided and a portion where a reflection film is not provided, using the method according to claim 1.