在CSS中指定打印的细线粗细 [英] Specify hairline thickness in CSS for printing
问题描述
如果我有一个打印CSS样式的元素：
If I have a print CSS styling an element with:
border:1px solid black;
或：
border:0.25pt solid black;
打印时线非常粗 - 至少1pt。如果我尝试一个更小的值，如0.05pt，该行不会出现。如何获得细线？在像InDesign这样的程序中，您将厚度设置为0.25pt用于细纹，即非常细的线，但不能太薄，因此不能打印。
The line is very thick when it prints – at least 1pt. If I try a much smaller value, such as 0.05pt, the line doesn't appear at all. How can I get a thin line? In programs like InDesign you set the thickness to 0.25pt for a 'hairline', i.e. a very thin line but not so thin that it won't be printable.
注：这个问题似乎问同样的事情，但没有人解决了线厚度的实际问题，只是最好的使用单位：
pt或px指定打印边框宽度
Note: this question seems to ask the same thing, but nobody has addressed the actual issue of the line thickness, merely the best units of measure to use: pt or px for specifying border-width for print
推荐答案
感谢您的帮助。看来，浏览器在这方面是没用的。
Thanks for your help. It would seem that browsers are just useless in this respect.
我做了一些更多的测试，结论似乎是：
I've done some more testing and the conclusion seems to be:
- 没有浏览器对打印点尺寸有任何好处。
- 您不能假定用户将看到宽度小于1.25pt prinout。
我测试了以下网页的变体，每次调整边框点大小。我打印的适合页面已关闭。
I tested variations of the following web page, adjusting the border point size each time. I printed with 'fit to page' turned off.
<html>
<body style="width:17cm; background-color:rgb(245,245,245);">
<div style="border:0.3pt solid black; width:100%; height:20cm">IE 0.3pt</div>
</body>
</html>
这些是最小可打印点大小的结果，以及与打印输出从InDesign。我还包括了一些其他笔记：
These are the results of the minimum printable point size and what it looks like compared to a printout of lines from InDesign. I've included a few other notes, too:
FF：0.25pt，看起来像1.25pt。 DIV宽度看起来像是17厘米，但由于FF的大量打印边距，右边框被切断。看来16.5cm是最大可用宽度。 BODY高度适合页面高度。
FF: 0.25pt, looks like 1.25pt. DIV width looks like it is 17cm, but because of FF's massive print margins the right-hand border gets cut off. It seems 16.5cm is the largest usable width. The BODY height fits the height of the page.
Safari 5：0.75pt，看起来像1pt。 DIV宽度为18.2厘米，BODY宽度为19.5厘米 - Safari似乎适合页面，即使没有迹象表明它会这样做。 BODY高度在DIV高度后不久完成。
Safari 5: 0.75pt, looks like 1pt. DIV width is 18.2cm and BODY width is 19.5cm - Safari appears to be fitting to page even though there's no indication that it would do this. The BODY height finishes shortly after the DIV height.
Opera 11：0.4pt，看起来像0.75pt。 DIV宽度为16.2cm，BODY背景只出现在div中 - 虽然文本行出现在白色背景上
Opera 11: 0.4pt, looks like 0.75pt. DIV width is 16.2cm and the BODY background only appears within the div - although the line of text, appears on a white background
IE7：0.4pt，看起来像0.5pt （如0.5pt）。与FF一样，DIV宽度看起来像是17厘米，但由于IE的大量打印边距，右边框被切断。
IE7: 0.4pt, looks like 0.5pt (as does 0.5pt). As with FF, DIV width looks like it is 17cm, but because of IE's massive print margins the right-hand border gets cut off.
IE9：0.1工作低），但仍然看起来像0.5pt。否则与IE7相同。
IE9: 0.1 works (and possibly lower), but still looks like 0.5pt. Otherwise same as IE7.
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