Quality of Printed Images

Since it is often desirable to get a good quality print on paper directly from the browser, here areFigure  showseq:pics15 the same equations as [page]earlieron page eq:pics. This time the `extrascale=' option has been used with a value of 1.5 . More than twice the number of pixels are available, for a cost of approximately 1.7 times the disk-space[*].

Figure: Displayed math environments with extra-scale of 1.5
  $\displaystyle \hbox{\scalebox{.4}{\includegraphics{psfiles/eqn15}}}
$ (4)

$\displaystyle \hbox{\scalebox{.4}{\includegraphics{psfiles/eqarrA15}}}$     
$\displaystyle \hbox{\scalebox{.4}{\includegraphics{psfiles/eqarrB15}}}$    (5)

Since it is often desirable to get a good quality print on paper directly from the browser, here areFigure  showseq:pics15 the same equations as [page]earlieron page eq:pics. This time the `extrascale=1.5' option has been used. This value of 1.5 means that more than twice the number of pixels are available, for a cost of approximately 1.7 times the disk-space[*]. On-screen these images appear slightly blurred or indistinct. However there can be marked improvement in the print quality, when printed from some browsers; others may show no improvement at all. The “anti-aliasing” helps on-screen. In the printed version jagged edges are indeed softened, but leave an overall fuzziness.

Here areFigure  showseq:pics2 the same equations yet again; this time with `extrascale=2.0'. Now there are 4 times the pixels at a cost of roughly 2.45 times the disk space. Compared with the previous images (having 1.5 times extra-scaling), there is little difference in the on-screen images. Printing at 300 dpi shows only a marginal improvement; but at 600 dpi the results are most satisfying, especially when scaled to be comparable with normal 10 pt type.

Figure: Displayed math environments with extra-scale of 2.0
  $\displaystyle
\setbox 1=\hbox{\scalebox{.3}{\includegraphics{psfiles/eqn2}}}
\lower.5\ht1 \box1
$ (6)

$\displaystyle
\setbox 1=\hbox{\scalebox{.3}{\includegraphics{psfiles/eqarrA2}}}
\lower.5\ht1 \box1$     
$\displaystyle
\setbox 1=\hbox{\scalebox{.3}{\includegraphics{psfiles/eqarrB2}}}
\lower.5\ht1 \box1$    (7)



Footnotes

... disk-space[*]
This figure varies with the graphics format used, and the complexity of the actual image.
... disk-space[*]
This figure varies with the graphics format used, and the complexity of the actual image.