公开(公告)号：US3676646A

公开(公告)日：1972-07-11

申请号：US3676646D

申请日：1970-08-31

Applicant: IBM

Inventor： CARLSEN DONALD W ,  KOTLA JOHN J ,  PARKER ARDEN A

IPC: G06K9/18 ,  G06K19/04 ,  B41M3/14 ,  B42D15/00 ,  C08F45/66 ,  G06K19/06

CPC classification number: G06K19/04 ,  G06K9/18

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 translation: 在光学字母数字字符读取器中可处理的文件具有多个相同的约束字符图案，其印刷在改进的湿度调节或平版印刷油墨中的未处理基板上，作为操作者的手动打印引导件，人眼是可见的，但是不能机器识别 直到图案的可选择部分由通过笔施加的显影溶液显影以产生由这样的机器可识别的强度的多个字母数字字符中期望的一个。 不连续的图案配置确保了明确的独特机器识别字符，而没有不希望的羽化边缘或“抽搐”。 高反光显影剂在无意中施加到基底的未染色区域时不提供机器识别的图像。