5.3.1 Drying Time. Place a sheet of paper on a smooth, flat surface and partially cover with a second sheet of paper. Place cylindrical weight, approximately 200 grams and about 25.4 mm (1 inch) on top of the second sheet of paper. Write a five letter word on the exposed portion of the bottom sheet, allow to dry 5 seconds. Immediately thereafter draw the top sheet and weight towards the top of the bottom sheet, across the written characters at a rate of approximately 10 cm per second. The writing should not smear when tested. Examine both sheets for compliance.
5.3.3 Machine Writing Test. The machine test shall be conducted on a Anja model W-10A, Hartley model W10-F, Minitek writing test machines or equivalent capable of testing pens or refills, with the following parameters set:
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Writing Load: |
0.981 N (100 gF) to 1.225N (125 gF). |
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Writing Angle: |
75o + 5o (non varying) Or 60o to 90o (continuously varying). |
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Writing Speed: |
670 cm + 10.0 cm/ min. (22 ft/ min.) |
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Writing Pattern: |
Ellipse |
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Writing Surface: |
Polished stainless steel. |
5.3.4 The ink cartridge shall be subjected to the following condition and examined for compliance with the Machine Writing Test after being allowed to return to test temperature and humidity.
Condition. 168 hours (7 days) at 60 degrees C + 2 degrees C in a chamber with the ink cartridges suspended vertically (point down) at 85 to 90% relative humidity.
5.3.5 After being subjected to the above condition, the ink cartridge shall be written for a minimum distance of 1524 meters (5000 feet). Smooth writing shall start within the first 10 centimeters of the writeout without starvation of fluctuation of the line intensity. The written line shall maintain its relative color intensity throughout the writeout. Visual defects include blobs, skips, dotting and density variations of line intensity. The actual length of each visual defect shall be totaled for each cartridge and shall not exceed 1% of the written line.
6. Packaging:
6.1 Preservation, packing, and marking shall be as specified in the contract or order.
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