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|SIGMA HI-CHEMICAL INC.|
Magnetic recording has kept top position among a number of data storage technologies. There are many kind of magnetic media such as tapes, disks, cards and so on. For each medium, for example, video tape, DAT or hard disk, various standards are defined.
Our products enable easy and accurate observation of such magnetic records.
Thanks to the ultra fine ferromagnetic particles, about 10 nm in diameter, even submicron bit pitch records can be detected. With our sophisticated techniques colloidal particles never settle even during a long period storage. They are very suitable for observing recorded patterns of hard and flexible disks, DAT or video tapes.
Using them is very easy -- only applying a small amount of a Colloid to the part to be observed and letting it dry, then the patterns appear.
There are three types:
1. Contained in a bottle with an applicator -- coating rod made of porous plastic.
2. Contained in a felt tipped pen.
3. Contained in a plain bottle.
for Magnetic Tapes -- With the attached coating rod, colloids can be uniformly applied with ease on tapes in any width. Sigmarker Q-EX, which is resulted from removal of the solvent from Sigmarker Q, is not classified as dangerous goods, so that it can be shipped as ordinary cargo. It needs dissolution in a solvent separately prepared before use. Sigmarker W is water-based colloid bottled in a container with a coating rod. Colloids are applicable for other media such as magnetic disks, cards, etc. as well as tapes. They do not expand or shrink resin films or magnetic coatings of media.
Sigmarker Pens -- These are felt-tipped pens with ferromagnetic colloid ink. Magnetic records can be observed by simply uncapping and rubbing the media with their tips. You can use anywhere without staining fingers or clothing. Soft felt tip dose not harm media surface and colloids do not expand or shrink resin films or magnetic coatings of media.
for general Magnetic Media -- These Colloids are for magnetic tapes, disks, cards and most of other media. A small amount of a Colloid is applied and allowed to dry, the patterns on media are visualized immediately. Water and quick drying oil base are provided