Foreword
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QB/T 1745 consists of two parts under the general title Fountain pen inks:
——Part 1: Non-pigment inks;
——Part 2: Carbonic inks.
This is Part 1 of QB/T 1745.
This part is a revision of QB/T 1745-1993 Fountain pen inks.
The following main technology changes have been made with respect to GB/T 1745-1993:
——The standard name is modified;
——The application scope is modified; (see Clause 1; Clause 1 of Edition 1993);
——The product classification by color is modified (see 3.1; 3.1 of Edition 1993);
——The product classification by usage is added (see 3.3);
——The requirements for black ink and red ink are added (see 4.1);
——The requirements for document writing ink are added (see 4.2);
——The definition of test method is deleted (see Clause 6; Clause 5 of Edition 1993);
——The light fastness is modified as light resistance, the test method is modified (see 4.1 and 6.5; 4.1 and 5.5 of Edition 1993);
——The test methods for diffusion, water resistance and interval writing are modified (see 4.1, 6.3, 6.4 and 6.7; 4.1, 5.3, 5.4 and 5.7 of Edition 1993);
——The capacity tolerance is modified as net quantity (see 4.3 and 6.15; 4.2 and 5.10 of Edition 1993);
——The requirements and test methods for scuff resistance, ethanol resistance, hydrochloric acid resistance, ammonia resistance and bleaching resistance are added (see 4.2, 6.10, 6.11, 6.12, 6.13 and 6.14);
——The requirements and test method for migration element content are added (see 4.4 and 6.18);
——The environmental conditions are added (see Clause 5).
This part was proposed by the China National Light Industry Council.
This part is under the jurisdiction of National Technical Committee on Writing Instrument of Standardization Administration of China (SAC/TC 378).
This part replaces the former professional standard QB/T 1745-1993 Fountain pen inks issued by the Ministry of Light Industry from the implementation date hereof.
The previous editions of this part are as follows:
——QB/T 551-1984 and QB/T 1745-1993.
Fountain pen inks - Part1: Non-pigment inks
1 Scope
This part specifies the classification, requirements, test methods, inspection rules as well as marking, packaging, transportation and storage of non-pigment inks for fountain pens and dip pens.
This part is applicable to the iron tannate ink and dye-based ink for fountain pens and dip pens.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 460-2008 Paper - Determination of the sizing value
GB/T 1468 Tracing paper
GB/T 1541-2007 Paper and board - Determination of dirt
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 6388 Transport package shipping mark
GB/T 12654 Writing paper
GB 21027-2007 Request in common use of security for student's articles
QB/T 2775 Fountain pen
JJF 1070 Rules of metrological testing for net quantity of products in prepackages with fixed content
3 Classification
3.1 Classified according to the color: blue-black ink, pure blue ink, black ink and red ink.
3.2 Classified according to the performance: high-quality ink and normal ink.
3.3 Classified according to the usage: general writing ink and document writing ink.
4 Requirements
4.1 The physical and chemical properties of general writing inks shall meet those specified in Table 1.
Table 1
Test method Item Requirement
Blue-black ink Pure blue ink Black ink Red ink
High-quality Normal High-quality Normal
6.1 Chroma (absorbance) ≥0.30 ≥0.26 ≥0.28 ≥0.24 ≥0.40 ≥0.40
6.2 Insoluble matter/mm2 ≤2.0 ≤2.5 ≤2.0 ≤2.5 - ≤2.0
6.3 Diffusion/grade ≤3
6.4. Water resistance The scribing line shall remain visible for at least 24h. The scribing line shall remain visible for at least 1h. -
6.5 Light resistance The scribing line shall remain visible for at least 72h. The scribing line shall remain visible for at least 24h. -
6.6 Stability Shall be free from mildew or peculiar odour
6.7 Interval writing/min ≥30 ≥20 ≥30 ≥20 ≥20
6.8 pH ≥1.5 ≥1.5 ≥7.5 6.0~7.8
6.9 Ink appearance No suspended solids or odour on the surface
4.2 The physical and chemical properties of the document writing ink shall meet those specified both in Table 1 (excluding water resistance and light resistance) and Table 2.
Table 2
Test method Item Requirement
6.4 Water resistance The scribing line shall remain visible for at least 24h.
6.5 Light resistance The scribing line shall remain visible for at least 72h.
6.10 Scuff resistance The scribing line shall remain visible after wiping.
6.11 Ethanol resistance The scribing line shall remain visible for at least 10min.
6.12 Hydrochloric acid resistance The scribing line shall remain visible for at least 24h.
6.13 Ammonia resistance The scribing line shall remain visible for at least 24h.
6.14 Bleaching resistance The scribing line shall remain visible for at least 5min.
4.3 The packaging quality of inks shall meet those specified in Table 3.
Table 3
Test method Item Requirement
6.15 Net quantity Complying with JJF 1070
6.16 Tightness No leakage when inverted
6.17 Package appearance a) No contamination on the surface;
b) Bottle body and cap: complete in shape, free of defects and burrs;
c) Bottle label, packaging box and trademark: clear in text, well-marked, neatly and properly pasted.
4.4 The migration element content in inks for underage students shall meet the requirements of GB 21027-2007, 3.1.
Foreword i
1 Scope
2 Normative references
3 Classification
4 Requirements
5 Environmental conditions
6 Test methods
7 Inspection rules
8 Marking, packaging, transport and storage
