A markerboard may become badly stained or the erasability may deteriorate, depending on the use
environment. The possible causes of stains are listed below. The following section also describes what to do when the markerboard is badly stained or when the
erasability has deteriorated.
Cause of noticeable stains
① The use of a badly stained eraser will also leave bad stains on the markerboard surface.
② If you erase a letter or word written in marker ink immediately after you write it, the marker ink will
spread over the board because it has not yet dried.
③ If you use a neutral detergent or a dirty dust cloth to clean the surface of the board, the detergent or
water stain on the surface may absorb the dirt from the eraser, making the markerboard dirty.
④ Air discharged from an air conditioner, tar, dirt left by hands, or finger marks may badly stain the board surface.
Cleaning a badly stained markerboard
1.Wipe the board surface with a clean, wet dust cloth, and then wipe it with a dry dust cloth to remove all the residual water.
2. If the stain remains after performing the previous step, use a commercially available ethyl alcohol (99.9%) to clean the board. Do not use a dirty dust cloth or neutral detergent. Doing so will make the board surface susceptible to stains.
3.Be sure to use a clean eraser. If the eraser is extremely dirty, wash it with water, and then let it dry
thoroughly before using it.
4.A thicker-piled eraser works better.
Causes of deterioration in eraser performance
1.Letters written with old markers (with faint parts or faded colors) may be hard to erase, even during
normal use, because of an imbalance in the ink components.
2.Letters that are left unerased for a long time and those which have been exposed to sunlight or air from an air conditioner may be hard to erase.
3.Letters are hard to erase with an old eraser (with worn or torn fabric) or one with a lot of marker dust on it.
4.Letters written with a marker are extremely difficult to erase if you clean the board surface with
a chemical such as acid and alkali or a neutral detergent.
What to do when letters written with markers are hard to erase
1.Replace the marker with a new one when the letters written are faint or their colors appear faded.
2.Replace the eraser with a new one when the fabric is worn or torn. When an eraser is extremely dirty, clean it by washing it with water, and then let it dry thoroughly before using it.
3.Do not clean the board surface with a chemical such as acid and alkali or a neutral detergent.
Ordinary markerboard maintenance
Wipe the markerboard with a clean, wet dust cloth, and then wipe it with a clean dry cloth.
Post time: Jun-09-2022