Fountain pen occupation standard

From;  Author:Stand originally

[Hui Cong manages network of general articles for use] This level is comfortable the tap water of the liquid ink that is pigment at having dye of water-solubility of harbour lay aside and device of metallic pen point.

1 classification and level

Gold fountain pen of cent of 1.1 fountain pen and iridium-point pen two kinds. Needle of gold fountain pen is made with golden alloy, most advanced solder has pen point alloy of platinum a group of things with common features, iridium-point pen needle is made with stainless steel, most advanced solder has pen point alloy of platinum a group of things with common features or wear-resisting hard alloy.

1.2 iridium-point pen divide iridium-point pen of tall difficulty class and common iridium-point pen two kinds.

2 technologies ask

The index of 2.1 various fountain pen must accord with regulation issueing a list:

Iridium-point pen of project name gold fountain pen is advanced the class that taste general tastes nib to slip degree of main writing surface: The front slants left 30º , slant right 30º is smooth, the opposite is general good write (consult real kind) main writing surface: The front slants left 30º , slant right 30º is smooth, the opposite is general good write (consult real kind) main writing surface: The front slants left 30º , slant right 30º is smooth, the opposite is general very write (consult real kind) 70mmHg of the ability in swimming that fight leakage does not drip high slack 50mmHg does not drip high slack 30mmHg does not drip high slack and successive book writes 30min ceaseless water intermittence writes 20min ceaseless water 15min is ceaseless, 40g is less than to fight appearance of chromic layer of corrode sex plating after 50g exhaustion is less than after exhaustion 4min not show-through, inside component 3min not show-through is outside a 3min not layer of film of show-through aluminium oxidation is outside a 40s is not bubbly, component 20s does not bubble inside outside degree of finish of not bubbly handwriting is not more than a 20s 0.30mm is not more than 0.40mm not less than bright needle 1.2ml that are more than 11.2mm at caliber of shaft of 0.35mm water absorption not quite, be more than not less than 0.8ml of 10.5mm, not less than 0.6ml(that are less than 10.5mm are special structural water absorption is exceptional) the exterior 1. The surface is bright and clean
2. handwriting, brand can identify
3. fittings is made the same score take firm