[sebhc] printer driver

[Barry Watzman]

The printhead was never changed.  I don't remember how thermal monitoring
was done, it may have been via a calculation (count number of "hits" on the
printhead wires per unit of time) or it might have been measured, but you
definitely could drive it to the point at which it did thermal throttling to
allow the printhead to cool.


-----Original Message-----
From: sebhc at sebhc.org [mailto:sebhc at sebhc.org] On Behalf Of H.E. Robert,
[Just Bob!]
Sent: Tuesday, February 22, 2005 11:02 AM
To: sebhc at sebhc.org
Subject: Re: [sebhc] printer driver

Boy isn't that the the truth!!! I built one of those babies when
they first came out, for use with my Altair, and If I remember
it used to calculate the printhead temp by monitoring the resistance
of one of the printhead coils?  That was aggravating, as it would only
print about a page and a half, before going "over temp", and then would
print a line or two, and cool for 5 to 10 minutes, before printing the next
line or two.  Then to top it off, the handshake between it and the Altair
was not bullet-proof, and the end result was always a useless printout.
I thought I had died and gone to heaven when I could finally afford a used
Centronics 701!!  Anybody know if the printhead was ever upgraded?

And okay, I can't leave it alone...

......old programmers never die, they just....

A. GOSUB
B. LOOP until NEXT (for the reincarnationist's on the list)
C. go to tape...(paper or magnetic)
D. reach the EOF
E. hit "RUBOUT" instead of "HEREIS"
F. get "FORKED"...(resource or data)
G. are ready for archive!

Allright, I'll stop now,

Just Bob!


Barry Watzman wrote:

>It was only a low-duty cycle 7-wire printhead.  We looked at doing graphics
>a few times, but concluded that anything with heavy "black" coverage would
>smoke the printhead.
>
>
>-----Original Message-----
>From: sebhc at sebhc.org [mailto:sebhc at sebhc.org] On Behalf Of Mark Garlanger
>Sent: Monday, February 21, 2005 8:52 PM
>To: sebhc at sebhc.org
>Subject: RE: [sebhc] printer driver
>
>Yes, the H-14 was the printer. I used to have one of those. The lower-case
>letters didn't even have true descender. I think it only handle ASCII I
>doubt a driver would provide any extra capabilities.
>
>		Mark
>
>-----Original Message-----
>From: sebhc at sebhc.org [mailto:sebhc at sebhc.org] On Behalf Of Barry Watzman
>Sent: Monday, February 21, 2005 2:48 PM
>To: sebhc at sebhc.org
>Subject: RE: [sebhc] printer driver
>
>There is no H17 printer.  The H17 was a disk system.  Printers had model
>numbers ending in "4", mostly.
>
>Also, printer driver for what system/software?
>
>
>-----Original Message-----
>From: sebhc at sebhc.org [mailto:sebhc at sebhc.org] On Behalf Of Ken Guenther
>Sent: Monday, February 21, 2005 2:24 PM
>To: sebhc at sebhc.org
>Subject: [sebhc] printer driver
>
>Does anyone have the printer driver for the h17 printer?  I have the h24 
>that I downloaded off the archive site and it works ok but would like to
get
>
>the one for the h17.  Thank you.
>
>
>Ken Guenther
>
>Old programmers never die...  They just "GOTO"
>
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