CN1275768A - 使紫外线固化树脂层固化的装置 - Google Patents

使紫外线固化树脂层固化的装置 Download PDF

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CN1275768A
CN1275768A CN00108649A CN00108649A CN1275768A CN 1275768 A CN1275768 A CN 1275768A CN 00108649 A CN00108649 A CN 00108649A CN 00108649 A CN00108649 A CN 00108649A CN 1275768 A CN1275768 A CN 1275768A
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F·W·范德比利吉
A·H·M·博南
P·H·艾姆伯茨
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Abstract

一种使涂覆于一主表面或一圆盘状记录载体的两个圆盘件之间的紫外线固化树脂层固化的装置,它包括一支承圆盘状记录载体的转动装置和一对紫外线固化树脂层进行紫外线辐射的直线式紫外线辐射源。直线式紫外线辐射源相对于转动平面设置成一个角度,因此也就不平行于或垂直于该平面。该直线式紫外线辐射源可与圆盘状记录载体相对地设置成使它延伸到其边缘以外,以同时对涂覆于圆盘状记录载体边缘表面的紫外线固化树脂层进行曝光。

Description

使紫外线固化树脂层固化的装置
本发明涉及一种使涂覆于一主表面或一圆盘状记录载体的两个圆盘件之间的紫外线固化树脂层固化的装置，它包括支承圆盘状记录载体并使其在一平面内转动的转动装置以及一相对于圆盘状记录载体径向设置的、用于对紫外线固化树脂层进行紫外线辐射的直线式紫外线辐射源，其中，直线式紫外线辐射源的长度和位置是这样的，即该直线式辐射源相对于圆盘状记录载体而设置并从圆盘状记录载体的中心到其边缘与其相隔一段距离。
这种类型的一个装置可以认为是公知的，如欧洲专利No.0574975中顺便提到的。
在现有技术的装置中，直线式紫外线辐射源平行于上述平面而设置，因此，紫外线固化树脂层不均匀地暴露于直线式紫外线辐射源的紫外线辐射。
本发明的目的在于提供紫外线固化树脂层的均匀曝光。
为了实现此目的，本发明提供了序言中所述类型的一种装置，它的特点在于，直线式紫外线辐射源相对于所述平面设置成0到90度之间的角。
已开发出了一个模型，以此模型为基础，根据直线式紫外线辐射源相对于所述平面的位置和直线式紫外线辐射源的长度，可确定一最佳角度。通过测量圆盘状记录载体半径方向上的紫外线辐射强度的不均匀性，已证明了该模型可表示紫外线辐射能量作为圆盘状记录载体半径的一个函数而变化，因而可以看出，该模型实际上是令人满意的。尤其已表明，最佳角度在20度到70度之间的范围内变化，具体取决于直线式紫外线辐射源的长度。
当然，也可以根据经验来确定最佳角度，因而可提供调节所述角度用的装置。
在现有技术的装置中，需要额外的反射器来帮助涂覆于圆盘状记录载体边缘表面的紫外线固化树脂层的固化。关于这方面，可参见德国专利No.19545943。
本发明的另一目的在于消除使用上述额外的反射器的必要，这部分是因为它们经常会结垢，为了实现此目的，本发明进一步提供了这样一个方面，即把直线式紫外线辐射源与圆盘状记录载体相对地设置成使其延伸到所述圆盘状记录载体的边缘以外。
有人指出，上述欧洲专利No.0574975中所揭示的装置也能够在使涂覆于圆盘状记录载体边缘表面的紫外线固化树脂层曝光的同时使涂覆于圆盘状记录载体主表面的紫外线固化树脂层有均匀的曝光。然而，在该现有技术的装置中，一管状紫外线辐射源相对于上述平面设置成90度角，并提供一回转体反射器，在该反射器中心轴线上设置该管状紫外线辐射源。该现有技术装置的这种结构导致紫外线辐射剂量太小，因为大部分的辐射是间接辐射。具体说，紫外线辐射的波长小于250纳米的部分太少了。反射器可反射约80％的紫外线-A/B，约40％的紫外线-C。紫外线-C对涂覆于圆盘状记录载体主表面的紫外线固化树脂层的固化尤为重要。过低的剂量使得无法缩短周期，从而需要使用具有更大能量的管状紫外线辐射源，因此热量输入较大。
本发明用于增加光强的一个实施例的特点在于，将一反射体平行于直线式紫外线辐射源的远离圆盘状记录载体的一侧而设置。
为了消除反射器的结垢现象，本发明的一个实施例的特点在于，直线式紫外线辐射源在远离圆盘状记录载体的一侧具有一反射器。该反射器可包括一在部分直线式紫外线辐射源上的涂层。当更换该直线式紫外线辐射源时，可再次得到一个新的反射器。
最好，该反射器是一种可传递热辐射的冷光反射器。
由于本发明的直接曝光，可实现较高的紫外线辐射效率，这样便可以使用能产生更强、具体说是高达约180纳米的紫外线辐射。本发明可缩短周期。可以实现小于两秒的周期。
本发明的实质是提供一种设置成这样一个角度的直线式紫外线辐射源，即需要曝光的圆盘状记录载体在转动时可产生均匀的曝光。由于最小能量实际上保持恒定，因而直线式紫外线辐射源的能量不需要比直线式紫外线辐射源是平行于圆盘状记录载体而设置的传统情况更高。
涂覆于圆盘状记录载体主表面的紫外线固化树脂层可以是一保护涂层，记录载体可以是CD型的。
涂覆于圆盘状记录载体的两片圆盘构件之间的紫外线固化树脂层是一种在紫外线固化时连接所述圆盘构件的粘料、粘结剂或胶层。记录载体可以是DVD型或SACD型的。DVD型的记录载体可以有两片以上的圆盘构件和一个以上的紫外线固化树脂(粘料)层(例如DVD18)。紫外线固化树脂层可以如WO 97/36737或DE-A1-4041199中所揭示的那样涂覆。
下面参照附图来详细描述本发明，附图中：
图1是本发明装置的一个实施例的示意图；
图2是图1的紫外线辐射源和抛物面反射器的剖视图；
图3是表示具有不同长度L灯的直线式紫外线辐射源的辐射量的不均匀度随倾斜角α变化的图表；以及
图4是本发明装置的另一个实施例的示意图。
在图1中，转动装置1支承一圆盘状记录载体2，用于使圆盘状记录载体2在线A所示的一平面内转动。需要通过紫外线辐射来固化的紫外线固化树脂层5位于圆盘状记录载体2(例如是CD型的)的主表面3上。相对于圆盘状记录载体2径向地设置有一直线式紫外线辐射源7，用于对紫外线固化树脂层5进行紫外线辐射。在图1中由L灯表示的直线式紫外线辐射源7的长度以及该直线式紫外线辐射源7的位置是这样的，即该直线式辐射源7相对于圆盘状记录载体2而设置并从图1中C所示中心轴线所限定的圆盘状记录载体2的中心到图1中R盘所示圆盘状记录载体2的边缘与其相隔一段距离r灯。直线式紫外线辐射源7相对于平面A而设置在0到90度的角，该角在图1中由α表示。
在图1所示的实施例中，直线式紫外线辐射源7是以这样的方式相对于圆盘状记录载体而设置，即它延伸到圆盘状记录载体2的边缘R盘以外。在图1中，P表示直线式紫外线辐射源7的所谓起始点，h表示直线式紫外线辐射源7的起始高度，而R灯表示从直线式紫外线辐射源7的起始点P到中心轴线C的距离。直线式紫外线辐射源7的起始高度h是在R灯处从待固化的紫外线固化树脂层5到直线式紫外线辐射源7的起始点P的距离。起始高度可以是一负高度。r灯、R盘和R灯分别也可称作终点半径、圆盘半径和起点半径，α可称作倾斜角。
当直线式紫外线辐射源7延伸到圆盘半径以外时，位于图1中圆盘状记录载体2的边缘表面8上的紫外线固化树脂层9将在紫外线固化树脂层5的同时受直线式紫外线辐射源7照射。
如图1和2中所示，平行于直线式紫外线辐射源7的远离圆盘状记录载体2的一侧而设置有一反射器10，该反射器可以是一抛物面反射器，并最好是一冷光反射器。有利的是，虽然图中没有示出，但反射器10位于直线式紫外线辐射源7上，例如是涂层的形式。
已经草拟了一个表示曝光能量随圆盘状记录载体2的半径而变化的模型。在所述模型中，L灯、α和P(R灯，h)均为变量。图3中表示在R灯＝7.5厘米和h＝2厘米的情况下对于不同L灯的结果，即在圆盘状记录载体2完成一圈时，圆盘状记录载体2的半径方向上的辐射强度的不均匀性(最大值与最小值之间的差)随α而作函数变化。
从图3可以归纳出，当不均匀度需要低于20％时，倾斜角α必须在20到70度之间的范围内变化。
由于最佳倾斜角α是L灯和P的一个函数，因而使倾斜角α可调是较为有利的。为此，本发明装置的一个实施例(未图示)包括倾斜角α调节装置。
直线式紫外线辐射源7可以是一种能产生更强、具体说高达约180纳米的紫外线辐射的辐射源。
图4是类似于图1。对于图1中已讨论过的内容，采用与图1中相同的标号。图4与图1的不同在于，待固化的紫外线固化层5位于圆盘状记录载体2(例如是DVD型或是SACD型的)的两片圆盘构件21、22之间。所述紫外线固化层5在这种情况下是用于连接或粘结圆盘构件21、22而形成一个整体记录圆盘2。辐射源7在操作中透过圆盘构件21对紫外线固化树脂层5进行紫外线辐射。

Claims (9)

1.一种使涂覆于一主表面或一圆盘状记录载体的两个圆盘件之间的紫外线固化树脂层固化的装置，它包括支承圆盘状记录载体并使其在一平面内转动的转动装置以及一相对于圆盘状记录载体径向设置的、用于对紫外线固化树脂层进行紫外线辐射的直线式紫外线辐射源，其中，直线式紫外线辐射源的长度和位置是这样的，即该直线式辐射源相对于圆盘状记录载体而设置并从圆盘状记录载体的中心到其边缘与其相隔一段距离，其特征在于，该直线式紫外线辐射源相对于上述平面设置成一个0到90度之间的角。
2.如权利要求1所述的装置，其特征在于，所述角在20到70度之间的范围内变化。
3.如权利要求1或2所述的装置，其特征在于，所述装置还包括调节所述角用的装置。
4.如前述任一项权利要求所述的装置，其特征在于，该直线式紫外线辐射源与圆盘状记录载体相对地设置成使其延伸到所述圆盘状记录载体的边缘以外。
5.如前述任一项权利要求所述的装置，其特征在于，平行于该直线式紫外线辐射源的远离圆盘状记录载体的一侧设置有一反射器。
6.如权利要求1-4的任一项所述的装置，其特征在于，该直线式紫外线辐射源在远离圆盘状记录载体的一侧具有一反射器。
7.如权利要求5或6所述的装置，其特征在于，该反射器是一冷光反射器。
8.如前述任一项权利要求所述的装置，其特征在于，该直线式紫外线辐射源可产生更强的紫外线辐射。
9.如权利要求8所述的装置，其特征在于，该直线式紫外线辐射源可产生高达约180纳米的更强紫外线辐射。
CNB001086499A 1999-05-07 2000-05-08 使紫外线固化树脂层固化的装置 Expired - Fee Related CN1200418C (zh)

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CN100350316C (zh) * 2003-06-26 2007-11-21 友达光电股份有限公司 紫外线干燥装置
CN100433154C (zh) * 2005-10-11 2008-11-12 达信科技股份有限公司 承载装置及应用其的紫外光固化方法

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KR100823245B1 (ko) * 2001-08-21 2008-04-17 삼성전자주식회사 디스크 제조장치 및 그 투과층 형성방법
US10730072B2 (en) * 2015-03-13 2020-08-04 Excelitas Canada, Inc. Dispensing and ultraviolet (UV) curing with low backscatter
CN111589674A (zh) * 2020-06-10 2020-08-28 宁波视睿迪光电有限公司 紫外固化装置及紫外固化方法

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JPS6269457A (ja) * 1985-09-20 1987-03-30 Nagase Screen Insatsu Kenkyusho:Kk 紫外線ランプ
JPH06302020A (ja) * 1993-04-15 1994-10-28 Dainippon Ink & Chem Inc 回転塗布方法および回転塗布装置
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CN100350316C (zh) * 2003-06-26 2007-11-21 友达光电股份有限公司 紫外线干燥装置
CN100433154C (zh) * 2005-10-11 2008-11-12 达信科技股份有限公司 承载装置及应用其的紫外光固化方法

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US6603132B1 (en) 2003-08-05
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CN1200418C (zh) 2005-05-04
DE60036434D1 (de) 2007-10-31
NL1011991C2 (nl) 2000-11-09
EP1050876A1 (en) 2000-11-08
KR100774033B1 (ko) 2007-11-06
HK1031947A1 (en) 2001-06-29
EP1050876B1 (en) 2007-09-19
TW486691B (en) 2002-05-11
DE60036434T2 (de) 2008-06-26

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