A-A-2753
11/15/91
2.3 Condition in container From visual examination while stirring, the material should be soft plastic like ink having no skins and lumps, free from impurities, and should show no more pigment caking than can be readily reincorporated to a smooth homogeneous state.
2.4 Printability - Physical properties of the ink shall be balanced so that it will not mist or fly off the rollers; it will print sharp, clean lines and halftones; will not scum or tint; will not pull the sheets out of the grippers; cause distortion or curl; pick the paper surface; or tear the sheet (See section 3.1).
2.5 Setting and Bleeding - The ink when printed on 40 pound white bond paper shall set rapidly and dry within four hours to a hard, non-smutting condition.
2.6 Scumming and bleeding - The ink shall be no show through or loss of half tone detail from a 140 line halftone master.
2.7 Pigment grind - There shall be no coarse particles or undisposed agglomerates which might cause piling or caking on the press rollers, plates and blankets; wear of plate images, filling in of halftone or scumming. Fineness of grind shall not be less than 5 on the Hegman fitness of grind gage (see 3.2)
2.8 Color - The ink shall give a jet black impression when printed on 40 pound white bond paper.
2.9 Tack - The ink shall maintain a relatively constant tack over a period of at least seven hours. When measured with an inkometer, the ink shall start with a tack between 10 and 20 at 400 RPM and shall not exceed 25 after seven hours (see 3.3).
2.10 Shelf Life - The items shall have a shelf life of one year after delivery and shall be capable of withstanding normal usage and handling and pass the Printability test (see section 3.1).
2.11 Workmanship - The ink shall be free from defects or imperfections of manufacture which may affect its durability, appearance, serviceability or present a hazard to the user.
3. TEST METHODS
3.1 Printability - When tested in accordance with ASTM F413 and ASTM F506.
3.2 Pigment grind - Fineness of grind shall not be less than the NPIRI equivalent of 5 on the Hegman fitness of grind gage when tested in accordance with ASTM D1316.
3.3 Tack - The tack shall be tested in accordance with ASTM D-4361.
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