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Groups > alt.os.linux > #51577
| From | "Carlos E. R." <robin_listas@es.invalid> |
|---|---|
| Newsgroups | alt.os.linux, alt.os.linux.ubuntu |
| Subject | Re: A problem with "convert" - security related |
| Date | 2018-11-12 14:17 +0100 |
| Message-ID | <g4tcr8Fu9tvU1@mid.individual.net> (permalink) |
| References | (1 earlier) <ps657g$cn$1@dont-email.me> <ps73u6$t0r$1@gioia.aioe.org> <ps7kj3$r8a$1@dont-email.me> <ps8548$gq1$1@gioia.aioe.org> <ps8b26$n7q$1@dont-email.me> |
Cross-posted to 2 groups.
On 11/11/2018 05.26, Paul wrote:
> Paulo da Silva wrote:
...
> I agree it doesn't make any sense. Not on writes.
> It's a reading/interpreting issue.
>
> One of the reasons these capabilities existed in the first
> place, is some laser printers had "resident" fonts. These
> may have been stored on a hard drive inside the laser printer.
> At the time, flash (NOR) memory was too expensive to hold
> the fonts.
>
> You could send a specially formulated .ps print job, to send
> a font to the printer. I've never done it, but heard you
> could do such a thing at the time.
>
> Some file capabilities existed in PostScript, that might not
> have been there, if it wasn't for the printer requirement.
>
> Today, we send embedded fonts in documents, so a printer
> with resident fonts isn't as necessary. The embedded font
> is a subset. I have document samples here, where a font table
> only has one character in it, as an example of how few characters
> they're willing to embed when sending them with the document.
All printers, even ribbon printers (pin matrix), have "fonts" :-)
In some form. They need to handle fonts in order to be able to print
plain ascii.
Well, maybe winprinters don't, I do not know.
Postscript printers have more sophisticated fonts. They can be scaled
(vector based?) and you do not see the "dots", the quality normally
keeps. Similarly I think PDF printers also have some fonts, because the
PDF format assumes the receiver knows how to handle a small set of
fonts. You can try print directly (raw) a PDF without embedded fonts and
it should print.
My printer handles ps and I can send it plain ps files without sending
fonts and they print fine.
--
Cheers,
Carlos E.R.
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A problem with "convert" - security related Paulo da Silva <p_s_d_a_s_i_l_v_a_ns@netcabo.pt> - 2018-11-10 02:35 +0000
Re: A problem with "convert" - security related Paul <nospam@needed.invalid> - 2018-11-10 00:15 -0500
Re: A problem with "convert" - security related stepore <linshine@here.now> - 2018-11-10 00:34 -0800
Re: A problem with "convert" - security related Paul <nospam@needed.invalid> - 2018-11-10 07:32 -0500
Re: A problem with "convert" - security related Paulo da Silva <p_s_d_a_s_i_l_v_a_ns@netcabo.pt> - 2018-11-10 17:19 +0000
Re: A problem with "convert" - security related Paul <nospam@needed.invalid> - 2018-11-10 17:03 -0500
Re: A problem with "convert" - security related Paulo da Silva <p_s_d_a_s_i_l_v_a_ns@netcabo.pt> - 2018-11-11 02:45 +0000
Re: A problem with "convert" - security related Paul <nospam@needed.invalid> - 2018-11-10 23:26 -0500
Re: A problem with "convert" - security related "Carlos E. R." <robin_listas@es.invalid> - 2018-11-12 14:17 +0100
Re: A problem with "convert" - security related Paul <nospam@needed.invalid> - 2018-11-12 09:21 -0500
Re: A problem with "convert" - security related "Carlos E. R." <robin_listas@es.invalid> - 2018-11-12 17:09 +0100
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