Abstract:
A document processable in optical alphanumeric character readers has a plurality of identical constraint character patterns printed on an untreated substrate in an improved moisture-setting or lithographic ink that is visible to the human eye as a hand printing guide to the operator but not machine-recognizable until selectable portions of the pattern are developed by a developing solution applied by a pen to create a desired one of a plurality of alphanumeric characters of an intensity recognizable by such a machine. The discontinuous pattern configuration assures sharply defined distinctive machine-recognizable characters without undesirable feathered edges or ''''tics.'''' The highly reflective developer provides no machine-recognizable image when inadvertently applied to uninked areas of the substrate.
Abstract:
A HIGH SPEED ADDITIVE CIRCUIT PROCESS FOR MANUFACTURE OF CIRCUIT LINES UPON A POLYESTER OR POLYIMIDE SUBSTRATE, INCLUDING THROUGH-HOLES THEREIN, COMPRISING THE STEPS OF CLEANING, SENSITIZING, ACTIVATING, PRINTING A NEGATIVE FACSIMILE, OF THE FINAL DESIRED PATTERN OVER THE ACTIVATED SURFACE, HEAT SETTING, ELECTROLESS NICKEL PLATING, CURING, AND FINAL CONDUCTIVE COATING BY FLOW SOLDERING. ONLY ONE STEP MAY EXCEED ONE MINUTE IN TIME. TEMPERATURES AND TIME AT TEMPERATURE DETAILS ARE INCLUDED. CONDUCTIVE LINES AS FINE AS 2 MILS WIDE ON 4 MIL CENTERS MAY BE MADE BY THIS PROCESS.