印刷過程涉及到機械、材料、電子等許多技術領域，生產中出現(xiàn)的印刷故障十分復雜，故障產生的原因往往與許多因素有關。下面來講講濟南印刷時出現(xiàn)常見的七大質量問題。

The printing process involves many technical fields such as machinery, materials, electronics, etc. The printing failures in production are very complex, and the causes of the failures are often related to many factors. Now let's talk about seven common quality problems in Jinan printing.

1、偏色

1. Dichroism

原因可能有原稿質量較差、制版不準確、曬版條件控制不一致、墨色控制步好、看樣臺光源不標準等。

The reasons may include poor quality of the original, inaccurate plate making, inconsistent control of printing conditions, good ink control, non-standard light source of the sample stand, etc.

2、顏色暗淡，不鮮艷

2. The color is dim and not bright

原因可能有原稿質量較差、制版曲線設計不佳、分色片密度較低、曬版不實印跡過淺、印刷壓力不足、印刷機老化、潤版液過量、紙張粗糙、白度過低等。

The reasons may include poor quality of the original, poor design of the plate making curve, low density of color separators, poor printing, insufficient printing pressure, aging of the printing machine, excessive fountain solution, rough paper, low whiteness, etc.

3、文字發(fā)水

3. Writing water

原因可能有陽圖密度較低、膠片灰霧度較大、曬版不實印跡過淺、印刷壓力不足、印刷機老化、潤版液過量、油墨量不足等。

The reasons may be low positive image density, high film haze, poor printing, insufficient printing pressure, aging of the printing machine, excessive fountain solution, insufficient ink, etc.

4、糊版

4. Paste version

由于印版圖文部分溢墨，造成承印物上的印跡不清晰，屬膠印印品故障。

Due to the overflow of ink on the image and text of the printing plate, the print on the substrate is not clear, which belongs to offset printing fault.

5、臟版

5. Dirty edition

因印版潤濕部分不良，造成空白部分著墨。

Due to the poor wetting part of the printing plate, the blank part is inked.

6、掉版

6. Version dropping

平印版的圖文細微調子變淺，網點和線條面積減小，甚至失去親墨性。

The fine tone of the image and text of the lithographic plate becomes lighter, the area of the dot and line decreases, and even loses the ink affinity.

7、網點增大

7. Increase of outlets

承印物上網點面積比印版上相應部分的網點面積增大。

The dot area of the substrate is larger than that of the corresponding part on the printing plate.

此外要注意再好的機器如果使用的人操作不到位，相應的產品也會有瑕疵。所以印刷人員的操作規(guī)范程度也會直接影響到印品好壞。關注我們http://buiy.cn了解更多相關內容！

In addition, it should be noted that if the user of the best machine does not operate it properly, the corresponding product will also have defects. Therefore, the standard level of operation of printing personnel will also directly affect the quality of printed products. Follow us http://buiy.cn Learn more!