Flatbed Printer mod

[news.virgin.net]

I have built a flatbed printer from an old Epson Stylus 640 but need to fool
the
printer into thinking there is paper in, when the drive stepper is disabled
I have tried timing relays but can't get it right. Does any clever person
know how I do this. Maybe some way of resetting the control chip

I have a good knowledge of electronics but can't find the relevant info.

This would be a great project if it were possible.
DH

 

[Lord Garth]

"news.virgin.net" <dave,pittam@virgin.net> wrote in message
news:F_E5i.2079$rW2.1063@newsfe7-win.ntli.net...

I have built a flatbed printer from an old Epson Stylus 640 but need to
fool
the
printer into thinking there is paper in, when the drive stepper is
disabled
I have tried timing relays but can't get it right. Does any clever person
know how I do this. Maybe some way of resetting the control chip

I have a good knowledge of electronics but can't find the relevant info.

Since you're attempting to re-engineer this printer, why don't you try to
get
the service manual from Epson. If nothing else, it would show you were
the sensors are / were located.

 

[Don McKenzie]

news.virgin.net wrote:

I have built a flatbed printer from an old Epson Stylus 640 but need to fool
the
printer into thinking there is paper in, when the drive stepper is disabled
I have tried timing relays but can't get it right. Does any clever person
know how I do this. Maybe some way of resetting the control chip

I have a good knowledge of electronics but can't find the relevant info.

This would be a great project if it were possible.
DH

I guess the answers that were already given to you on
sci.electronics.basics (including mine) didn't suit.

Don...


--
Don McKenzie

Site Map: http://www.dontronics.com/sitemap
E-Mail Contact Page: http://www.dontronics.com/email
No More Damn Spam: http://www.wizard-of-oz.com

USB Flash Drive interface for existing products.
http://www.dontronics-shop.com/product.php?productid=16654

 

[news.virgin.net]

No thanks for the info I am trying your method toworrow I just like to get
as much info first please don't take the hump I am very grateful.
"Don McKenzie" <look@mysig.com> wrote in message
news:46575228$0$23424$afc38c87@news.optusnet.com.au...

news.virgin.net wrote:

I have built a flatbed printer from an old Epson Stylus 640 but need to
fool the
printer into thinking there is paper in, when the drive stepper is
disabled
I have tried timing relays but can't get it right. Does any clever person
know how I do this. Maybe some way of resetting the control chip

I have a good knowledge of electronics but can't find the relevant info.

This would be a great project if it were possible.
DH

I guess the answers that were already given to you on
sci.electronics.basics (including mine) didn't suit.

Don...


--
Don McKenzie

Site Map: http://www.dontronics.com/sitemap
E-Mail Contact Page: http://www.dontronics.com/email
No More Damn Spam: http://www.wizard-of-oz.com

USB Flash Drive interface for existing products.
http://www.dontronics-shop.com/product.php?productid=16654

 

[news.virgin.net]

I have the all the wiring diagrams but can't find a datasheet for the main
control chip E05B43YA
Cheers.
"Lord Garth" <LGarth@Tantalus.net> wrote in message
news:KNH5i.30140$Um6.27678@newssvr12.news.prodigy.net...

"news.virgin.net" <dave,pittam@virgin.net> wrote in message
news:F_E5i.2079$rW2.1063@newsfe7-win.ntli.net...
I have built a flatbed printer from an old Epson Stylus 640 but need to
fool
the
printer into thinking there is paper in, when the drive stepper is
disabled
I have tried timing relays but can't get it right. Does any clever person
know how I do this. Maybe some way of resetting the control chip

I have a good knowledge of electronics but can't find the relevant info.


Since you're attempting to re-engineer this printer, why don't you try to
get
the service manual from Epson. If nothing else, it would show you were
the sensors are / were located.

 

[Lord Garth]

"news.virgin.net" <dave,pittam@virgin.net> wrote in message
newslJ5i.1046$VS.238@newsfe3-win.ntli.net...

I have the all the wiring diagrams but can't find a datasheet for the main
control chip E05B43YA
Cheers.

I have service manuals for several very date impact printers. They show
everything
including the timing adjustments. Perhaps the documents aren't as well
written as it is
expect that the printer will be tossed.

For want of a drive belt, I had to dispose of an otherwise functional HP
printer. I
thought it odd that a 20 year old dot matrix printer has a functional drive
belt yet a
5 year old ink jet has a degraded belt and no spares available, new or used.

I did scrap the steppers out of it however.