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It's a similar story with Hewlett Packard HP cartridges. Cut open a HP inkjet cartridge and you'll find what is going on. The size of the sponges inside, which hold the ink, have progressively reduced over the years. The rest of the cartridge is now simply empty space.

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In Epson cartridges, meanwhile, the ink tank has been systematically reduced in size. Chris Brooks, technical director of industry group the UK Cartridge Remanufacturers Association, is more forthright: "The big printer companies do all they can to squeeze ever-increasing amounts of cash out of the poor consumer in exchange for less ink. Worst value, say the experts, are the colour cartridges. All three leading players, including Canon, sell single tri-colour cartridges — cyan, magenta and yellow — often with less than 2ml of ink per colour.

The shrinking amount of ink in cartridges has enabled manufacturers to offer a remarkable new product — called "XL" extra large but almost exactly the same size as the standard cartridge. But both are nearly identical in size. Indeed, some makers' "XL" cartridges may contain less ink than standard cartridges issued a few years ago. XL cartridges are an "insult" to the consumer, says Patrick Stead of cartridge recycler Environmental Business Products: "HP sells half-full cartridges, then sticks an 'XL' on, fills them up, and sells them for even more money.

The difference in manufacturing costs is pennies. It's a shocking rip-off. The printer companies dispute that they are squeezing consumers to ramp up profits. Most of our Pigma products can last longer than the 24 months with the exception of running out of ink or damage to the nib under ideal use conditions. Our Gelly Roll or SumoGrip pen products provide an alternative for a more durable point and are ideally suited for everyday writing use.


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From our tests results we estimate that our Pigma inks will not have any noticeable ink hue change for up to years. Beyond this many years, the papers they are tested on become a problem and there is a question of whether the paper color is changing or the ink color is changing. Accelerated light tests such as theses are the only practical way of estimating light-fastness results. You may want to find out if other manufacturers actually test their inks, or just make marketing claims of lightfastness. Besides light exposure, inks can also be effected by other environmental exposures such as humidity, temperature, and airborne chemicals, and liquids.

Each of these factors should be individually considered as well. The average write out length of the Pigma Microns The wider the line width, the lower the write-out length. So here are some general approximate length write-outs for the black ink:. Write-out is very dependent upon the type of paper used, e. Write-out is affected by the "cap-off time," i. Although not proven, we suspect that treating paper, for example by "paper sizing," might affect the write-out. Some people try to treat the acidity of their paper by adding calcium carbonate. If they don't fully dilute the powder some of the particles may clog the Micron nibs.

Pigma Microns are considered disposable pens. The product specifications and design use are for paper and not for rough surfaces such as wood or nubby fabrics.

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However, the Pigma Micron is the pen of choice for many tole painters. Here are a few helpful hints from tole painters sent to us over the years. Note: We do not necessarily endorse these practices, and suggest each individual conduct their own tests before undertaking any project. This will prevent uneven wear to the tip of the nib. Use a 05 or 08 point size when marking against hard, rough surfaces such as wood or nubby fabrics. Use more than one pen, and rotate your pen use. This allows pens to rejuvenate the ink flow overnight and this extends the life of the pen.

Do not press down hard on the nib while you write. The excessive pressure wears down the plastic nib faster, especially on rough surfaces. Do not make long uninterrupted lines against rough paper surfaces or wood with the pen. Make shorter line strokes and the pen nib will last longer. When writing on paint, make sure that the paint is fully dried, not just surfaced cured. Acrylic paints may feel dry to the touch but just below the surface, may not be. The nib picks up bits of the wet paint and will clog easily.

One needs to experiment to be sure the paint is completely dry due to differences in weather conditions. Remember, the paint drying time will differ depending upon the brand of paint you use. If you have one Micron pen which is out of ink and the nib is not clogged , you can exchange its nib with another Micron pen which is not out of ink, but has a clogged nib. Here's how -- With a needle nose pliers, firmly grasp the metal sleeve and gently pull the nib straight out. A long ink wick will be attached to the back of the nib holder.

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This ink wick is what brings the ink to the nib. Now gently insert the good nib into the pen with ink. Make sure the nib assembly is seated snugly into the pen barrel. Put the cap back on the pen. Then you must wait for about 3 hours for the ink to gradually pull itself through the ink wick into the nib. Do not try to rush the process by shaking the pen - you'll only create a mess by making the ink go around the ink wick and flood the pen cap. Note: This process does not always work, but it is worth a try.

Also, do not mix ink colors. Do not take a red pen nib and insert it into a green ink pen! It is not advisable to use any product on tableware that may come in direct contact with food that has not been tested and cleared specifically for that use. Pigma Microns are not permanent on glass.

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You would have to test the effect of putting glaze over them on a practice piece to see if that seals them satisfactorily for non-tableware;. Our inks have not been tested for use on tableware that comes into contact with food. We do not recommend that they be used in that manner. Regardless what product you use for hand tinting, we recommend you try it on some similar photos that are not one of a kind to see how you like the results, colors, effect, etc.

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You might even want to wait a few weeks to check for surface degradation. If everything works out to your liking, you could then feel more confident about using that product on non-replaceable photos. Since there are so many types of photographic paper, Sakura cannot guarantee that Pigma inks will produce the hand tinting results you desire. Many photographers have told us they get the best results using non-RC resin coated papers. To prevent this bleeding effect, raise the ruler to a height so that its edge runs along the metal shaft of the Micron Pen. If raising the ruler while writing becomes a challenge, tape some pennies to the back of the ruler.

The raised backing prevents the nib from touching the ruler and thus prevents bleeding. Today, Pigma Micron pens have both the numbering system , 01, 02, 03, 05, 08 , as well as an approximate line width imprinted on the barrel. We say approximate line width because the actual line width can be affected by writing pressure, the absorbency of the paper and the speed of writing. The following cross reference shows the numbering system on the barrel and the approximate line width equivalent:.

The Pigma Micron pen was originally designed in the early s as a disposable alternative for expensive, refillable technical pens. See Illustration 1, Area A. Under normal use, the air flows into the barrel through the vent area. The equalized pressure allows the ink to flow through the microscopic nib structure via capillary action. However, when the pen is unconsciously waved, tapped or spun in your hand while capped, the centrifugal force can cause the ink to come out of the air vent, which is the path of least resistance. Most people are unaware that they have used the pen as an outlet for nervous energy.

Centrifugal force can also be applied to the pen during shipping. The performance characteristics of Pigma ink require a special ink delivery system within the nib, but the trade off is that the Pigma Micron has to be handled more carefully than an ordinary ball point pen.

We pack our pens full of pigment ink. Pigment ink particles are much larger than dye ink particles and therefore more susceptible to gravitational pressure. The pen should also be stored horizontally when not in use. For a pen that has leaked, the area around the air vent can be carefully wiped clean, but there will also be ink residue inside of the cap. Take a look inside of your Micron pen cap and you will see a secondary inner cap. See Illustration 1, Area B. This 2nd inner cap must also be wiped clean. Otherwise, every time you place the cap back on, the inner cap will transfer more ink to the vent area.

The pen should work fine after both areas are wiped clean. What makes this pen so unique is the hard nylon nib that withstands heavy pressure and constant use and provides you with even ink flow from edge to edge. Writing with Pigma Calligrapher for the first time is a very different experience, especially if you are used to a felt nib calligraphy pen. Some calligraphers have said that they prefer the Pigma Calligrapher after using it for a few minutes.

We recommend lettering a few sentences to determine the correct amount of pressure for your needs and to get a feel for the pen before attempting a final project. The Pigma Calligrapher is unlike other disposal calligraphy pens. The unique nib structure responds to a bit of pressure applied against the paper surface to create ink flow.