| 摘要 |
<p>PURPOSE:To prevent the printing area of a character from becoming narrow by eliminating absorption and reflection in a visible area or setting them to be considerably small in ink printing a bar code. CONSTITUTION:The bar code 2 is printed by specified ink for character printing manufactured by pigments which do not have absorption and reflection at all in an infrared area whose wavelength is more than 780nm or which have considerably small ones on the prescribed position of the regular card 1 on which the specified character 11 including a name is printed. In such a case, the bar code 11 printed on the card 1 can hardly be viewed and the state of the reflection of illumination is increased/decreased by changing the angle of a glance. Thus, the existence of the bar code 11 is barely recognized. The facility of the reading of the character and an appearance do not change from those of a general card at all.</p> |
