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Process for producing said multilayered information recording medium, and apparatus for producing multilayered information recording medium and screen constituting the apparatus

A technology of information recording and manufacturing methods, which is applied in the direction of optical record carrier manufacturing, data recording, information storage, etc., can solve problems such as uneven thickness and quality deviation, and achieve the effect of suppressing quality deviation

Inactive Publication Date: 2010-05-19
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the thickness of the coating layer is different for each coating layer, the quality of multiple multi-layer information recording media will vary
In addition, even a single paint layer or resin layer may have uneven thickness

Method used

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  • Process for producing said multilayered information recording medium, and apparatus for producing multilayered information recording medium and screen constituting the apparatus
  • Process for producing said multilayered information recording medium, and apparatus for producing multilayered information recording medium and screen constituting the apparatus
  • Process for producing said multilayered information recording medium, and apparatus for producing multilayered information recording medium and screen constituting the apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0123] In Embodiment 1, use Figure 1 ~ Figure 5D An example of the manufacturing method of the multilayer information recording medium of this invention and an example of the multilayer information recording medium manufactured by this method are demonstrated.

[0124] figure 1 It is a cross-sectional view of an example of the multilayer information recording medium of the present invention. Such as figure 1As shown, the multilayer information recording medium has a first signal substrate 601 and a first information recording portion 602 disposed on the information surface of the first signal substrate 601 . The first signal substrate 601 has a surface with pits or guide grooves as a concave-convex information surface. In addition, the multilayer information recording medium has a second signal substrate 603 arranged on the first information recording portion 602 . The second signal substrate 603 has a surface having pits or guide grooves as an uneven information surfac...

Embodiment approach 2

[0229] In Embodiment 2, using Figure 6A ~ Figure 8 illustrate figure 1 Another example of the manufacturing method of the shown multilayer information recording medium.

[0230] Figure 6A with Figure 7A A cross-sectional view illustrating one step of an example of a method for manufacturing a multilayer information recording medium according to this embodiment, Figure 6A For the figure showing the appearance just before coating, Figure 7A For the figure showing the state immediately after the coating, Figure 6B A plan view showing the appearance of the screen and squeegee just before coating, Figure 7B It is a plan view showing the appearance of the screen and the squeegee immediately after coating. As the resin-containing paint 903, the same paint as the resin-containing paint 103 used in Embodiment 1 can be used.

[0231] In these figures, 901 denotes a squeegee, 902 denotes a screen frame, 903 denotes a resin-containing paint containing an ultraviolet curable...

Embodiment approach 3

[0251] In Embodiment 3, using Figure 9A ~ Figure 10B illustrate figure 1 Another example of the manufacturing method of the shown multilayer information recording medium.

[0252] Figure 9A with Figure 10A A cross-sectional view illustrating one step of an example of a method for manufacturing a multilayer information recording medium according to this embodiment, Figure 9A A picture showing the appearance just before coating, Figure 10A For the figure showing the state immediately after the coating, Figure 9B A plan view showing the appearance of the screen and squeegee just before coating, Figure 10B It is a plan view showing the appearance of the screen and the squeegee immediately after coating.

[0253] In these figures, 1001 denotes a squeegee, 1002 denotes a screen frame, 1003 denotes a resin-containing paint containing an ultraviolet curable resin, 1004 denotes a screen, 601 denotes a first signal substrate, 602 denotes a first information recording part,...

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Abstract

This invention provides a process for producing a multilayered information recording medium comprising two or more information recording parts and a resin layer disposed between the information recording parts, wherein the assembly is disposed on a signal substrate. The production process comprises a first step of forming a predetermined information recording part on one main side of the signal substrate and a second step of feeding a resin-containing coating material onto a screen comprising a coating region with a plurality of first holes and a removal region with a plurality of second holes, passing a part of the fed resin-containing coating material through the plurality of the first holes by sliding a squeegee on the screen to form a coating material layer onto the predetermined information recording part, and curing the resin contained in the coating material layer to form the resin layer. The production process is characterized in that the first step and the second step each arecarried out by a predetermined number of times. In each second step, at least a part of the resin-containing coating material remaining, on the screen, uncoated onto the predetermined information recording part is passed through the plurality of second holes for removal from on the screen.

Description

technical field [0001] The present invention relates to a multilayer information recording medium for the purpose of recording or reproducing information and a method for manufacturing the same. Background technique [0002] In recent years, with the increase in the amount of information processed by information equipment or video and audio equipment, information recording media such as optical discs that are simple in data access, capable of storing large-capacity data, and adaptable to equipment miniaturization have attracted attention. . In addition, high-density recording of information has been studied for information recording media. As an information recording medium capable of high-density recording, it has been proposed to use a laser light source with a wavelength of about 400 nm and a laser beam source with a numerical aperture (NA, numerical aperture) of 0.85. An information recording medium on which information is recorded and reproduced by a recording and repr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/26G11B7/24G11B7/24038
CPCG11B7/266G11B7/24038G11B7/26
Inventor 留河优子富山盛央锦织圭史
Owner PANASONIC CORP