Electric Paper
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Electric Paper
Choosing The Right Electric Paper Cutter
If you are in the market for an electric paper cutter you have probably noticed that there a ton of options available. In fact you can spend as little as a couple thousand dollars and as much as hundreds of thousands of dollars. What is the difference? How do you know what cutter will be right for your needs? This article is designed to provide you with some quick tips for determining the right electric paper cutter for your company's needs. Here are a few things to consider...
1. Width: One of the first things that you should consider when looking for a paper cutter is the width of the cutting blade. This will require you to have a general idea of the items that you are planning on cutting. If you are going to primarily be cutting digital size sheets (12" x 18") you will need a much smaller size cutter than if you plan on cutting press sheets. It might be important to remember that most parent size sheets of paper are either 23" x 35" or 26" x 40". If you plan on cutting parent sheets you will need a cutter capable of handling these sizes.
2. Depth: In addition to the width of the cutting blade it is also important to know how deep the cutter is. The question that you need to ask is; how far can the material I am cutting extend behind the cutting blade. This will determine your maximum cut size.
3. Capacity: In addition to width and depth you will also need to know how much paper your cutter can cut at one time. Many cutters are capable of cutting entire reams of paper in a single pass. However, you will want to check the maximum capacity of the cutter to make sure that it will meet your needs.
4. Safety: All electric cutters should come with safety features to help ensure that you don't hurt yourself. The cutter should have a safety shield and double push button activation to prevent users from cutting off fingers or hands. If a cutter does not have these features you do not want to buy it since it will be a safety risk. Many higher end cutters will include other safety features such as an optical eye that can detect hands or objects close to the blade. These cutters are a little bit easier to use since the guards are not as obtrusive.
5. Accuracy and Adjustability: The best electric paper cutters have programmable backstops that are accurate to the nearest hundredth of an inch. These cutters allow you to digitally set the length of the cut that you want to make and it will move the backstop for you. Less expensive cutters will require you to move the backstop by hand using a hand crank. These cutters are still excellent but are more difficult to use. I would definitely suggest getting a programmable cutter if you can afford it. However, if you can't then you absolutely need to make sure that the paper stop is solid and square otherwise your cuts will not be accurate.
There are five simple tips for choosing an electric paper cutter for your needs. There are definitely a number of great cutters available on the market and these criteria should help you narrow down your search. However, you might also want to consider the warranty, availability of parts, cost of consumables and availability of service in your area before choosing the cutter for your business.
About the Author
Jeff McRitchie is the designer and Director of Marketing for
my binding.com
. He has written over 100 articles on
binding machines
,
Paper Cutters
, binding supplies, laminating supplies,laminator and more.
a photo copier sprays charged droplets of ink onto paper. An electric field in the copier head produces...?
a force on the droplets.
a) find the electric field strength that produces a force of 2.2x10^-4N on a droplet having a charge of 1.2x10^-10C.
b) if the electric fild were increaes in strength by 20%, by what factor would the force on the charged droplets have increases?
Could you help with explanation, formulas and working.
thanks
a) Because F = Eq, you could find the electric field strength by plugging in the numbers. F = 2.2*10^-4 and q = 1.2*10^-10.
(2.2*10^-4)=E(1.2*10^-10)
E = 1.83*10^6 N/C
b) To increase the electric field strength by 20%, just multiply the last answer by a factor of 1.2. Therefore the new electric field strength would be 2.2*10^6 N/C.
F=Eq
F = (2.2*10^6)(1.2*10^-10) = 2.64*10^-4 N
To find the ratio (or factor) just divide the answer we just got for part b by part a.
(2.64*10^-4)/(2.2*10^-4) = 1.2
Just 1.2 times stronger.
--------------------------------
Easy way....
This is part a:
F = Eq
This is part b:
F' = E'q
You know that E' = 1.2*E, so substituting that would yield:
F' = 1.2*E*q = 1.2*F
F' = 1.2*F
F'/F = 1.2
Thus the answer is 1.2 for part b.
Fujitsu's FLEPia Electric Paper : DigInfo