没有什么比提前完成项目但由于“扫描(Scan)或打印速度慢”问题而延迟提交更糟糕的了。同样，扫描仪的其他问题也会让用户感到沮丧。在今天的专栏中，我们重点介绍了一些主要的扫描仪硬件问题(Scanner hardware problems)及其故障排除方法和解决方案。
扫描仪(Scanner)问题、故障排除、解决方案
设备的质量非常重要，有时，即使是全新的、无划痕的塑料载体也会降低扫描质量。以下是确保它们始终正常运行的方法！
1]论文Logjam
使用任何打印机/扫描仪时，不可避免地会遇到卡纸。这是纸张或其他打印材料卡住或卡入打印机而无法弹出的事件。在大多数情况下，您的用户指南(User Guide)或控制面板说明应该足够轻松地引导您完成这个错误的任务。大多数扫描仪/打印机都提供视频帮助，使清除卡纸变得无忧无虑。
首先检查纸张路径并清除所有卡住的材料，小心不要撕裂它。如果它被夹在滚筒之间，请缓慢释放压力以将其移除。
如果纸张未对齐导致卡纸，请取出纸盘并正确放置纸张并重新安装纸盘。此外，检查它们是否正确平方并重新定位。
2]打印时间慢
在许多情况下，高分辨率设置可能会导致打印时间变慢。高分辨率图像会消耗更多数据并需要更多时间来处理。这总是会导致打印时间变慢。因此，如果您不太想获得画廊质量的图像，请使用普通(Normal)或草稿(Draft)质量的普通纸进行打印，以获得更快的打印速度。
其次，检查打印驱动程序设置同样重要，因为它们决定了速度结果。例如，高端激光器可用于 -
一般来说，PCL适合更快的办公室打印，而后者，PostScript最适合图形密集型应用程序和行业。
最后，从双面模式切换到单面模式。为什么？单面打印所需的时间要少得多。
3] 不良/不合适的印刷品
通常，您的打印机工作得很好，但无法产生预期的结果。图像可能会显得褪色或质量很差。这甚至可以将最好的创作变成不受欢迎的东西。为避免这种情况，请检查电缆连接。扫描仪的背面很可能有两个连接。
- 插入电源插座的电缆
- 插入计算机的电缆
确保这两条电缆已牢固插入。某些扫描仪仅依靠USB电缆供电，因此它们没有单独的电源线。将此类扫描仪直接连接到 PC (Connect)USB端口，而不是将它们连接到未通电的USB集线器。众所周知，USB 集线器(USB Hub)有时无法产生足够的电力来运行扫描仪。此外，检查定影器调整。在少数激光打印机中，定影器可以调整纸张类型。如果您的打印机的热凝器可以手动调整，请检查它是否设置正确。
4] Wi-Fi 打印耗时异常长
如果连接较弱并且您没有得到正确的打印，则将打印机放置在非常靠近路由器的位置可以提高吞吐量并减少打印时间。除了上述方法之外，您还可以尝试以下解决方法来提高Wi-Fi性能，同时保持打印机放置的灵活性– 使用(– Use)支持 802.11n 并提供5GHz频段和2.4GHz 频段(2.4 GHz)的路由器。此外，请确保其固件是最新的。如有必要，您可以添加无线扩展器或中继器以提高性能。
阅读(Read)：如何安装 TWAIN 驱动程序(How to install TWAIN driver)。
5] 墨水/碳粉问题
如果图像在屏幕上的显示方式与打印时的显示方式不同，则可能是墨盒/碳粉盒存在问题。在这种情况下，校准打印机可以确保您打印的内容与您在屏幕上看到的内容保持一致。
话虽如此，但必须注意每种产品处理校准过程的方式不同。此外(Besides)，每个校准套件都带有自己的一套标准说明。
但是，您可以手动调整打印机对话框中的颜色选项，以匹配您从原装墨盒获得的结果。打印机驱动程序中包含用于微调打印机颜色整体外观的控件。因此，根据您的需要，这可能足以获得您想要的颜色。
此外，如果新墨水/碳粉插入不正确，可能会出现墨水/碳粉盒问题。为避免此类情况，请正确修复它。
6]删除其他设备
作为预防措施，您还可以检查连接到计算机的其他设备是否干扰了扫描仪的功能。如果有任何其他不需要的设备连接到您的计算机，请尝试将其关闭并断开非必要设备的连接。Parallel、SCSI、Firewire和其他USB设备可能会干扰扫描仪操作。
阅读下一篇(Read next)：扫描仪无法在 Windows 10 上运行(Scanner is not working on Windows 10)。
Scanner problems, troubleshooting tips and solutions
Nothing is worse than cоmplеting a projеct before time but submitting it late due to ‘Slow Scan or Print’ problem. Simіlarly, other issues with the scanner can cause frustration to the users. In today’s column, we’ve highlighted some major Scanner hardware problems alongside their troubleshooting methods and solutions.
Scanner problems, troubleshooting, solutions
The quality of your equipment is highly important, and sometimes, even brand-new, unscratched plastic carriers can degrade scan quality. Here’s how you can ensure they are up and running, always!
1] The paper Logjam
When working with any printer/scanner, it is inevitable that you will encounter a paper jam. It’s an event where a paper or other printed material gets stuck or lodged into a printer and is unable to eject. In most cases, your User Guide or control panel instructions should walk you through this erroneous task easily enough. Most, scanners/printer, provide video assistance to make jam clearance a hassle-free experience.
Start by inspecting the paper path and remove any jammed material, being careful in not tearing it. If it’s caught between rollers, release the pressure slowly to remove it.
If the misalignment of the papers has caused the jam, remove the tray and position the papers correctly and reseat the tray. Also, check to see if they are squared properly and repositioned.
2] Slow Print Time
On many occasions, slow print time can be caused by a high-resolution setting. High-resolution images consume more data and require more time to process. This invariably leads to slow print times. So, if you aren’t so hell-bent on getting gallery quality images, print with plain paper in Normal or Draft quality for faster print speeds.
Second, it’s equally important to check the print driver settings as they determine speed outcome. For instance, high-end lasers are available with-
- PostScript
- PCL and the manufacturer’s host-based driver.
In general, PCL is suitable for faster office printing while the latter, PostScript is best suited for graphics-intensive applications and industries.
Lastly, switch from two-sided to simplex mode. Why? One-Sided printing takes considerably less time.
3] Bad/Inappropriate looking prints
Often, your printer works just fine but fails to yield desired results. The images might appear faded or very poor in quality. This can turn even the best creations into something undesirable. To avoid this, check the cable connection. A scanner most likely has two connections located on its rear side.
- A cable plugged into a power outlet
- A cable plugged into the computer
Be sure these two cables are securely plugged in. Some scanners rely solely on the USB cable for power, and thus they don’t have a separate power cord. Connect such scanners directly to the PC USB port rather than connecting them to an unpowered USB hub. It is known that USB Hub sometimes does not generate enough power to run the scanner. Also, check fuser adjustment. In few laser printers, the fuser has an adjustment for paper type. If your printer’s fuser can be adjusted manually, check if it’s set properly.
4] Wi-Fi printing takes an unusually long time
If the connection is weak and you do not get the right print, placing your printer very close to your router can increase throughput and reduce printing time. In addition to the above, you can try the following workaround to improve Wi-Fi performance while retaining the flexibility of printer placement – Use a router that supports 802.11n and offer the 5GHz band as well as 2.4 GHz. Also, ensure that its firmware is up to date. If necessary, you can add a wireless extender or a repeater to increase performance.
Read: How to install TWAIN driver.
5] Ink/Toner Issues
If the way images look on screen differs from the way they look in print, there’s likely an issue with the ink/toner cartridge. At such times, calibrating your printer can ensure what you print remains consistent with what you get on screen.
Having said that, it is essential to note that each product handles the calibration process differently. Besides, every calibration kit comes with their own set of standard instructions.
You can, however, manually adjust the color options in the printer dialog to match the result you got from original cartridges. Within the printer driver are controls for fine-tuning the overall appearance of color from your printer. So, depending on your needs, this may be enough to get the color you want.
Also, an ink/toner cartridge problem may arise if new ink/toner has just been inserted incorrectly. To avoid such instances, fix it correctly.
6] Remove other devices
As a precautionary measure, you can also check if other devices connected to the computer are interfering with the functioning of the scanner. If there are any additional, unwanted devices connected to your computer, try shutting it down and disconnecting non-essential devices. Parallel, SCSI, Firewire, and other USB devices may interfere with the scanner operations.
Read next: Scanner is not working on Windows 10.
