2) Plate preparation: My glass comes fromthe glass shop 慶leaned� withWindex or something similar that leaves an oily, water repellent coating.First: wash with hot, soapy water. Rinse in tap water and vinegar. Next:Although my glass shop does a great job sanding the edges, for the glassnegatives, I go a step further. Using an emery brick, sold for smoothingceramic tile cuts, I try to make as round and smooth an edge as possible - thetheory being that you don抰 want to provide any sharp su**ces to cut the dried emulsion duringprocessing. If you eliminate an area where water can get in and under theemulsion, you - by default - reduce the chances of frilling.
2)准备涂布玻璃板:#纯意译# 玻璃板要求没有任何防水图层或油性图层。首先用热的肥皂水洗涤,然后用白醋漂洗,然后用自来水冲净。用金刚砂打磨玻璃板边缘,要使边缘尽可能的圆滑,这样可以防止尖利的边缘划破其他玻璃板的乳剂,这样有可能造成乳剂起皱。
After sanding: the final round of cleaning,this time with Barkeeper抯 Friend and a soft chamois cloth (the kind given out by opticians toclean eyeglasses): Use gentle, but thorough, circular rubbing motions, **sure to go over the entire su**ce of the glass. Rinse with tap water, drain,and dip in Everclear. Dry with a clean, soft dish towel. From this point on, only handle the glasswith gloved hands.
最后的清洁步骤:这次需要一块麂皮(就是不掉落纤维的高级擦镜布),轻柔的,但是彻底的像拓印那样转圈吸干整个玻璃表面的水分。然后用自来水冲洗,使水自然流干,将玻璃板浸入95%的酒精中。用干净柔软的洗碗布吸干水分,从这步以后,此玻璃板只能带橡胶手套拿取。
Backing prep: Turn the glass plate facedown and apply double back tape to the edges of the glass. Handling by theedges, wearing clean cotton gloves, turn the plate over onto a sheet of mylar.Set a metal ruler on edge up along each edge of the glass and cut with a verysharp X-acto knife. This will leave you with about a 1 mm edge around the entire plate. As you coat, excess emulsionwill set up on this little shelf and provide extra protection from frilling.After development the edge looks (and feels) like clam gills. What doesn抰 fall off by itself duringdevelopment is easily removed with fingernails during washing. The only caveatis that you have to be careful that none of the 慻ill� pieces dry on the su**ce of the negative. After the emulsiondries, shmootz can抰 be removed.
背部贴膜:把玻璃片准备涂布的面向下放置,在玻璃板的背面都沿外边对齐粘上双面胶。然后带上干净的棉手套,把玻璃板翻过来,摁在聚酯薄膜上。#以下是我的理解 # 用一把钢尺,立起来贴在玻璃板的边上,然后用锋利的裁纸刀沿着钢尺切割,这样全切完,会在玻璃板四周留下一个1毫米长的聚酯薄膜的边,也就是说钢尺至少得厚1毫米,这样做的优点是,当你涂布乳胶的时候,多余的乳剂可以附着在这个边上,这个边可以避免玻璃板四周的乳胶出现褶皱。显影之后,这个边上的多余乳剂看起来很像实际上感觉起来也很像贝壳上面的褶皱,那些没有随着显影而掉落的多余乳剂在最后水洗的时候也可以很容易的扣下来。唯一要注意的是,最后一定要保证乳剂面上没有残余的被扣下来的乳剂碎片,一旦干燥后,这将成为无法去除的污点。
The mylar backing also keeps the back ofthe plate clean. After the plates are dry, before loading or stacking,carefully remove the mylar and any tape that sticks to the glass rather thanbeing pulled away with the mylar . The emulsion band is pretty tough, but takecare to avoid breaking it off.
这个聚酯薄膜后背同样也保持着玻璃板后背的清洁。当涂布的干板彻底干燥后,在装入片盒或者码垛起来之前,我们需要仔细的把聚酯薄膜和双面胶的胶膜撕掉,要避免只撕掉聚酯薄膜的情况。双面胶的胶膜其实很坚韧,撕得时候要尽量保证整体撕掉,不要斯断。
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