The causes and how to fix lines on printouts

12 Replies Scott Williams

If you own a printer, chances are you’ll experience some sort of trouble with it at some point, if you haven’t already. One of the most common ailments plaguing printers is horizontal lines across the page – lines you didn’t ask to be there.

The good news is that there are several steps you can take to try to cure this problem before having to call in a professional or replace the printer entirely.

Basic Causes and Fixes

Fortunately, most fixes for horizontal lines fall into this category. It’s always a good idea to start with the simplest, easiest remedies before taking more drastic measures and risking further damage.

Ink level is low
This is one of the most common reasons unwanted lines appear on printouts. If your printer is running out of ink, simply replace or refill your ink cartridges following the manufacturer’s instructions and recommendations.

Often new printers come with ink cartridges that are either low on ink or have ink cartridges that have dried out from lack of use while sitting on the shelf. If you’ve just purchased a new printer, double-check the cartridges that came with it.

Settings are incorrect
It can make a big difference in the quality of your printout if your settings are not correct. Check the following:A woman with a hammer about to hit a printer

  • Paper type – Make sure the paper type selected matches the paper you are actually using. Printing photos and the use of photo paper is especially affected by incorrect settings.
  • Print quality – Settings usually offer a choice between Draft, Normal and Best. Select the highest quality possible.
  • Color or black and white – Select “Color” printing even if you are printing a document that is only in black and white. While it may seem counterintuitive, some printers that have separate colour and black and white cartridges use ink from both cartridges – even for black and white documents. Choosing the “Color” option will often fix horizontal lines appearing in black and white printouts.
  • Speed – Turning off high speed printing mode often eliminates unwanted lines.



Test, clean, and align
Part of good printer maintenance is periodically running your printer through a cycle of test, clean, and align – even when there aren’t problems. This helps keep the printer operating smoothly. It’s also a good basic step toward resolving problems with your printouts.

Troubleshoot
Most printers have a troubleshooting option. Go ahead and run your computer’s troubleshooting program for your printer. Windows users can reach this through the Control Panel, while Mac users go through System Preferences.

Read the manual
If you haven’t thrown out or misplaced your printer’s manual, it can actually be helpful to take a look through it and check for helpful hints. Manuals also usually have their own specific troubleshooting guides – as well as a tech support hotline.

Defective cartridge
Once in a while, an ink cartridge is simply defective. If the printer is working and you’ve tried everything else, you may just need to replace the cartridge.

Advanced Causes and Fixes

Unfortunately, there are times when the basic fixes just aren’t enough. These fixes take a bit more time and effort, but they can ultimately save you the expense and hassle of either having your printer repaired or purchasing a new one.

Clogged/dirty print head
If the horizontal lines on your printouts are black or in colour and are not simply streaks where ink is missing, a clogged or dirty print head is a likely culprit. There are several methods of cleaning print heads, depending on the make and model of the printer. It’s always best to check with the printer’s manufacturer for the recommended method. However, there are some do’s and don’ts that apply regardless of printer brand:

  • DO unplug the printer and remove the ink cartridges before cleaning the print head.
  • DON’T use tap water to clean the print head. Most inks are water-soluble, so purified water is effective and relatively safe to use for cleaning. However, tap water can contain minerals and other impurities that can damage the print head.
  • DO use distilled water to clean the print head.
  • DON’T use compressed air to blow out print heads or nozzles. These parts are delicate and can be damaged by compressed air.
  • DO consider cleaning the backside of the print head assembly if cleaning the print head alone does not resolve the problem.

Defective print head
If after cleaning the print head assembly there are still unwanted lines, the print head may be defective and should be replaced.



If All Else Fails

Sometimes there’s truly nothing to be done except to either take the printer in to be serviced or buy a new one altogether. If it comes to that after trying the above fixes, at least you’ll know you did everything possible first.

How to proceed in the age of big data?

4 Replies Jonny Hankins

A couple of weeks ago I read an article in the New York Times about the age of big data, and today at a science and technology conference I got into a conversation about the same thing with a US public health official.

Much has been written (and I am a guilty party) about Google’s quest for information, including allegations of infringements of privacy etc, but not all of this capability should be seen in a negative light. I would like to give you a few examples of why.

A wealth of data

Google collect all of the search terms used by every user and categorize them. Let’s take a hypothetical situation. You are director of a large hospital inManchester. What can Google tell you about your job? Well probably a lot, let’s say that this week there is an enormous peak in the search terms “Flu symptoms” used across the Greater Manchester area, or “rash on back and neck”. Indirectly the knowledge of these search trends tells you that you should prepare your hospital, because late next week you will have a massive influx of patients with the Flu or some other contagious disease as it takes hold of the population.

This information is potentially lifesaving, as one of the main problems with epidemics is they come out of nowhere and so health centres are not properly prepared.

Search terms can also give an indication of how the housing market will behave too, with a rise in searches for houses in a certain area being reflected 6 months later in new sales. The type of house searched could also improve planning, as developers would see what people were looking for and where.

Analysts and programmers are currently working on how to expand on the simple examples above using search terms as wider indicators, a system called ‘sentiment analysis’ looks particularly promising.

This form of analysis looks at terms used during on line communication and categorizes them in terms of their sentiments. The logic is that in an area that is prospering terms will be generally positive, but in an area that is threatened by demise, such as the closure of industry or other societal problems, the terms will differ. This is not dissimilar to the conversation analysis sociologists use to obtain a person’s own sentiments about their position in life, with their true feelings reflected in the terms they use without thought. The hope is that an accurate analysis of this type might signal unfolding problems before they become a reality so that action can be taken in specific areas to avoid social breakdown.

I have addressed these issues in more depth on the Bassetti Foundation website, but want to conclude by saying the following; in my posts I have often raised the issue of data collection as a problem, and collection of personal data for advertising or any other purpose for that matter does raise serious ethical issues, but here Google et al could be sitting on a mine of extremely useful and possibly globally important data if the technology and political will is developed to use it correctly.

New Samsung Devices – Announced and Rumoured

5 Replies Luke Jordan

Samsung have certainly had a busy few months. In 2011 they saw huge success with their Galaxy S2 Smart Phone, which is still continuing to thrive even today. They also saw the success of their largest tablet on the market – the Galaxy Tab 10.1 – and rolled out similar high quality devices with the Galaxy Nexus and the Galaxy Tab 8.9.

At the end of 2011, Samsung snook another two tablets into the market, the Samsung Galaxy Tab 7.0 Plus and the Galaxy Tab 7.7 – almost without anyone realising. The Galaxy Tab 7.7 is only available in small quantities currently, but due to its initial success, it is expected to be made more widely available in the near future.

Samsung's LogoHowever, for a company that seems to have the best products currently in the market, they certainly haven’t held fire when it comes to announcing and releasing even more devices.

Just recently, Samsung announced their newest tablet (although it may not be their newest for long, but we’ll get to that) the Galaxy Tab 2 – a more entry level tablet similar in spec to the Galaxy Tab 7.0 Plus but with a slightly slower processor, a 1 GHz dual-core processor compared to the 1.2GHz dual-core processor in its 7.0 Plus counterpart, with Samsung trying to succeed in the market of cheaper electronic goods which has seen Amazon compete so successfully in recently.

Not to rest on their laurels, Samsung are also rumoured to be announcing a 10.1 inch version of their Galaxy Note (one of the biggest smart phones currently in the market, often referred to as a ‘phablet’ due to its similarities to a tablet rather than a phone) which has been reported from several sources due to Samsung accidentally releasing details about the Galaxy Note 10.1 being announced at this month’s MWC and also advertising for a young male to be seen using a ‘Galaxy Note 10.1’ device.

So, will Samsung’s new devices do as well as their previous releases? Only time will tell, but my guess is that they will.