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1. 发明授权

US3687546A Photo-printing apparatus 失效
标题翻译：照片打印机
公开(公告)号：US3687546A
公开(公告)日：1972-08-29
申请号：US3687546D
申请日：1970-08-13
申请人： IPT CORP
发明人： ENDEBROCK EDWARD N , BODINE CHARLES M
IPC分类号： G03B27/20 , G03B27/60
CPC分类号： G03B27/20
摘要： Photo-printing apparatus for duplicating a master photo-mask or plate. A copy is placed on a holder within a door pivotally mounted to a housing enclosing a light exposure system. The master plate is placed upon the housing and automatically aligned with the copy plate when the copy plate is pivoted into an operational position. The copy plate is held in place by negative pressure applied through a piston located in the door. Positive pressure is exerted upon the piston and master plate during exposure, while still maintaining the negative pressure behind the copy plate. After exposure, the positive pressure is removed and, in a preferred embodiment, a negative pressure is provided to the back of the master plate to facilitate separation of the master and copy plates.
摘要翻译：用于复制主光掩模或板的照片打印设备。将副本放置在可枢转地安装到包围曝光系统的外壳的门内的保持器上。当复印板枢转到操作位置时，主板被放置在外壳上并与复印板自动对准。复印板通过位于门中的活塞施加的负压保持在适当位置。在曝光期间，正压力施加在活塞和母板上，同时仍保持复印板后面的负压。曝光后，除去正压，在优选实施例中，在母板的背面设置负压，以便分离母板和复印板。

2. 发明授权

US3834815A Photocopying apparatus with vacuum means 失效
标题翻译：具有真空装置的光电装置
公开(公告)号：US3834815A
公开(公告)日：1974-09-10
申请号：US36785273
申请日：1973-07-06
申请人： IPT CORP
发明人： GREIG A
IPC分类号： G03B27/18 , G03B27/20
CPC分类号： G03B27/18 , G03B27/20
摘要： A device for duplicating a high resolution master transparency onto a photosensitive copy sheet wherein both are placed in a spaced apart relation within a vacuum chamber while the pressure within the chamber is reduced to a very low level significantly less than that of atmospheric pressure. The master transparency and the photocopy sheet are then mechanically urged together followed by a light exposure of the photocopy sheet through the master transparency. Air bubbles do not form between the master transparency and the photocopy sheet with the result of much better copies being made. The photocopy sheet and the master transparency are made ready for exposure in a very short period of time.
摘要翻译：一种用于将高分辨率主透明度复制到感光复印纸上的装置，其中两者在真空室内以间隔的关系放置，同时室内的压力降低到明显低于大气压的非常低的水平。然后将主透明度和复印纸机械地推动在一起，然后通过主透明度对复印纸的曝光。在主透明度和复印纸之间不形成气泡，从而产生更好的副本。复印件和主透明度在很短的时间内准备好曝光。

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