Posts Tagged ‘time’

Paper time

This year my twin sons are freshman in high school so the dynamic at our house has changed a whole bunch. They’re so much busier now than they were in middle school!

Because they’re also taking some honors classes and already in SAT prep classes we’re relying alot on the internet for their education. So when I came across www.satellitestarinternet.com I decided to switch over to it so that I wouldn’t have to hear them complain about it not working the night before they have papers due.

No matter how many times I tell them, they never start really working on essays and term papers until the night before they’re due in school. I’m really hoping that this won’t be the way that they’ll approach SAT prep.

Getting into college is so much more competitive now than it was when I was their age. And so many people are going to it now, that the importance of where you’re going has a lot more weight. That is just around the corner and I keep trying to remind them about it.

Ink cartridges defined

An inkjet ink cartridges is a removable and replaceable component of an inkjet printer. This contrasts with a dot matrix printer (also called needle printer) that uses an ink ribbon and a laser printer that works with a toner. A cartridge contains one or more ink reservoirs, electronic contacts and possibly a chip to communicate with the printer. There are many kinds of patterns, since almost every brand uses a different format. There are patterns to print in color and black cartridges to print. In general, one finds four colors in one inkjet printer. Black is almost always in a separate cartridge, the other colors can also sit in a cartridge. These are cyan, magenta and yellow. It is also possible that a special photo cartridge is installed with a special black ink which creates a higher gloss.
There are generally two types of cartridges:
- Ink Tanks: Ink tanks are filled with ink cartridges, which the (fixed) printhead into the printer be put. These patterns contribute little to the print quality of the printer. The printhead can usually be replaced separately.
HP delivers a mostly solid color cartridge, but also models with separate ink tanks. Also, Epson and Canon individual ink tanks can deliver.
- Patterns print head: Cartridges where the print head attached. This means that the print is actually the owner himself. Every time you replace the cartridge is replaced, thus the print head every time it a “like new” quality.

Cartridges in the aftermarket sales are very expensive (ink cartridges will cost about 1000 euros per liter converted, in some cases up to 3400 euros). Sometimes it is also cheaper than a new printer on sale now with matching ink (the included patterns are sometimes only partially filled). But there are solutions to the ink in a cartridge to refill, but that is usually only a few times (4-12 times) as possible. Because they are most profitable on the patterns (using the ‘razor-strategy), some manufacturers such as HP, in certain models of their cartridges a chip installed that allows the cartridge does not work after refilling.

Repair the Rotating camera selector switches

Before we start on the actual camera repair, the usual warning of  “Follow these procedures at your own risk”. These procedures should only be considered as a last resort on a broken camera with an expired warranty. I take no responsibility should you damage your camera in following these steps. Also note that there is some danger of electrical shock from the camera’s flash capacitor. I also take no responsibility if you zap yourself while following these procedures.”

here is your digital camera repair tips. It will be necessary to remove the back face from your camera to access the switch. The procedures vary little from camera  to camera. It  usually  involves   removing all the visible  screws along  the perimeter of the camera (also look for hidden ones,  such as under  the battery door or other camera flaps), then prying the back case off, usually starting at the lower portion of the case. A ribbon cable may be attached between the back case and the camera’s circuit board. Recommend leaving the cable attached as you usually should still  be able  to access  the switch. With the case open, and before proceeding further, remember to discharge the flash capacitor with the batteries removed.

Now note the simplicity of the design of the mode dial. It’s merely a rotating contact plate with two brushes that complete the circuit of the contact dial on the circuit board. With this design it’s easy to see how  the brushes or contact  plate may become fouled with gunk  to  interfere with contact. The brushes  may also  easily become slightly bent, say from a camera fall,   thus   also  interfering with operation. You may have already deduced what we need to do. The first is to clean the brushes and circuit dial of any visible gunk that may have accumulated on them. I recommend a Q-tip, very slightly dampened with a drop of alcohol. Be careful with the alcohol, you don’t want it running all over the circuit board. Remember   to check  and clean off any residual cotton hairs/lint from the Q-tip on both of these components.  A little compressed air blowing would help here. Just as reminder, Rotating camera selector switches (also called “Mode Dial” on Canon camera repair situation) enables the camera to select different modes of operation.

Finally, only bend the brushes if you suspect them of being damaged (remember that time you dropped the camera?  Ain’t it funny that it started to act up then?)  Ever so gently lift up on both brushes to bend them slightly upward to ensure contact with the contact dial.  Emphasis on the gently, we just want to bend them up the tiniest bit. That should do it.  Reassemble the camera and try it out. Good luck!