Help on printing circuit boards


Although not directly linked to HP calculators, but as I see this site is plenty of engineers, I would like to get some help about printing PCBs.
I was looking in Ebay there are some HP plotter, like HP 7475, and others X-Y plotters/recorders.
First: the small ones, like 7475 could be used to draft printed circuit boards (remember the board can not be bended).
Second: is difficulto to use them, if I would like to connect to my HP calculator?
Third: what are the X-Y recorders? I could see some specs telling about calibration up to 10Vdc? I have to connect them directly to a power source? If so, why the RS232 connection?
Any advice would be greatly appreciated!


Why would you put the printed circuit board in the plotter? All of the printed circuit boards that I have seen made were created by putting the artwork on flexible mylar film, either by hand or with a computer. The mylar film is then used to expose the photoresist coating on the printed circuit board, which is then etched and drilled.


Someone I know modified an old HP 9872A flatbed plotter to plot resist directly onto copper-clad PCB material. He had to modify the pen holder/lift assembly to account for the thickness of the PCB.

For the non-flatbed plotters, in which the pen is moved on one axis and the paper is moved on the other, this would be difficult if not impossible. They are designed specifically to grip and move paper or similarly thin and lightweight material.


Having used a 7475A plotter to make circuit board images on drafting film, I think you will get much better, faster and easier results using a laser printer and the "Toner Transfer" system.

$15 for 10 sheets at Digikey. Part # 182-1003-ND

I haven't actually tried toner transfer, but I would if I were to make homemade boards again.

Good luck!

Possibly Related Threads...
Thread Author Replies Views Last Post
  Printing the HP Prime manual BobVA 3 637 10-25-2013, 09:53 PM
Last Post: BobVA
  HP-65 short circuit Ignacio Sánchez 2 558 10-22-2013, 08:27 AM
Last Post: Ignacio Sánchez Reig
  USB flashing/Li-po boards patryk 6 826 09-08-2013, 12:31 PM
Last Post: patryk
  3D printing custom molds Han 3 566 08-02-2013, 03:26 AM
Last Post: Bruce Larrabee
  Printing HP 9825 data Norman Pillsbury 3 596 06-01-2013, 10:08 PM
Last Post: David Ramsey
  Does IR printing not work on your converted WP34s? Then read on... Harald 3 645 04-04-2013, 05:46 PM
Last Post: Harald
  WP34s IR Printing Update? Thomas Chrapkiewicz 2 445 02-24-2013, 01:53 PM
Last Post: Marcus von Cube, Germany
  is there a printing error in the HP 50G Quick Starrt Guide? Al 12 1,146 11-23-2012, 07:07 PM
Last Post: Al
  WP 34S Printing Harald 15 1,306 04-28-2012, 08:54 PM
Last Post: Les Wright
  WP 34S: IR printing - update Marcus von Cube, Germany 79 4,187 04-25-2012, 11:24 AM
Last Post: Walter B

Forum Jump: