At 08:53 AM 11/8/01 +0800, Kathy Quinlan wrote: >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 ? Seiko LTP mech, though that's in question at this point. Still, they all are pretty much the same in operation. The axiohm mech that I worked with before had multiple enables too, but it could take a full burn on all elements (19A@32V for about 300uS every 1200uS or less) >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. Oh THAT one! > 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. Wasn't that the silver paper? IIRC the electrodes burned up after a while. -- 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