Having problem with Parallel printer and Printing

Archiver

Dear Friends

I connected the BS2 to printer by 74HC595, and running the code from
Files directory of this group.

I have two problems:

1) The printer doesn't print when it should, it waits and waits
suddenly it starts printing and prints to many copies of the text
that I ordered before.
Basically it put all of them in a memory or something and start
printing when I don't want to.

2) pin number 11 of the parallel connection (connected to
Printer) generates -4.5 volts. I read the pin out for that and
datasheet says
"11 Busy Input status register INVERTED High indicates printer
cannot accept"

Therefore, I do not know if it is my printer or what, but I connect
it to ground through a resistor and it kind of working.

I appreciate any help or suggestion

Archiver

What is the mfg and model of printer?

--- In basicstamps@yahoogroups.com, "NIMA" <nimjah@y...> wrote:
> Dear Friends
>
> I connected the BS2 to printer by 74HC595, and running the code
from
> Files directory of this group.
>
> I have two problems:
>
> 1) The printer doesn't print when it should, it waits and waits
> suddenly it starts printing and prints to many copies of the text
> that I ordered before.
> Basically it put all of them in a memory or something and start
> printing when I don't want to.
>
> 2) pin number 11 of the parallel connection (connected to
> Printer) generates -4.5 volts. I read the pin out for that and
> datasheet says
> "11 Busy Input status register INVERTED High indicates printer
> cannot accept"
>
> Therefore, I do not know if it is my printer or what, but I connect
> it to ground through a resistor and it kind of working.
>
> I appreciate any help or suggestion