Hi David, RadioSpares are at www.RS-Components.com. If you are in the USA you will need to use UK export IIRC, set up an account (does not cost anything) and they will quote you, and you get access to the online technical library. What brand and make is the print head ? The electro thermal uses a silver paper, which is at ground potential, and just puts a voltage on the print head pin, the short circuit current burns the paper thus creating the image, Axiom corp. made lots of these printers. From what I remember, this method did not have problems with varying print density ie all black or no print, as the print head did not warm all that much. Regards, Kat. ____________________________________________________________________________ /"\ ASCII Ribbon Campaign | K.A.Q. Electronics \ / - NO HTML/RTF in e-mail | Software and Electronic Engineering X - NO Word docs in e-mail | Perth Western Australia / \ | Ph +61 419 923 731 ____________________________________________________________________________ ----- Original Message ----- From: "David VanHorn" To: Sent: Thursday, November 08, 2001 8:00 AM Subject: Re: A printing conundrum > At 07:40 AM 11/8/01 +0800, Kathy Quinlan wrote: > >I know this is not the answer, but IIRC RS (RadioSpares) has a dedicated > >print head controller IC. I guess you have checked the manufactureres site > >(I hope they have one) to see how they recommend to do it ? > > Where do you find radiospares? I've heard the name, but I can't remember > where. > > > >I prefer the electro thermal system, seemed easier to use :o) > > ? > > -- > Dave's Engineering Page: http://www.dvanhorn.org > > Got a need to read Bar codes? http://www.barcodechip.com > Bi-directional read of UPC-A, UPC-E, EAN-8, EAN-13, JAN, and Bookland, with > two or five digit supplemental codes, in an 8 pin chip, with NO external parts. > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu