To change the density of a barcode by using the mouse
密度 |
条形码的“密度”是指每英寸可编码的字符数。 One factor that controls the density of a barcode is its symbology. 不同的符号体系要求不同的条和间隔数来表示同一信息。 The density of a barcode is also affected by the width of the narrow and wide bars and spaces. 条和间隔越窄，打印条形码所需的空间越小，而用每英寸字符数表示的条形码密度就越高。
To change the density of a barcode by using the mouse
To change the density of a barcode by using the Symbology and Size property page
As the character density of a barcode increases, the space that is required to print it decreases, which enables the barcode message to be smaller. Although this may be desirable, if the density is increased too much, the readability of the barcodes can decrease due to the following factors:
The optics of the scanning device may not be precise enough to properly detect the narrow lines and spaces of the barcodes.
The printing tolerance of the printing device may not be precise enough to produce good-quality bars at the higher density settings.
当在点阵或激光打印机上打印高密度条形码时，请记住，您需要使用高分辨率的光学扫描仪来读取条形码。 由于各种原因（例如，点阵打印机头已老化或激光打印机出现墨粉污点），可能导致条之间的白色窄间隔太窄，从而使中低分辨率的光学扫描仪无法检测出来。 另外，激光打印机打印出的线条也可能会太细，超出光学扫描仪的光学分辨能力。 因此，如果您计划打印高密度的条形码，建议您使用高分辨率的光学扫描仪。
使用低密度点阵条形码可以生成高质量的照相制版作品。 如果以照相缩版方式缩小低密度条形码，点阵打印机中的单独点将消失，从而使其呈现使用高质量激光打印机打印的效果。