Some standard content:
ICS37. 040. 20
Registration No.: 413—1997
Chemical Industry Standard of the People's Republic of China
HG/T2909—1997
idtISo6408：1991
Photography-Paper dimensions-Rolls for photocomposition1997-05-23Published
Ministry of Chemical Industry of the People's Republic of China
1997-10-01Implementation
HG/T 2909—1997
This standard is equivalent to ISO6408—1991 "Size of roll paper for phototypesetting", the difference is: two international standard numbers that have been converted into Chinese standards have been changed:
Appendix A, B and C of this standard are all indicative appendices. This standard is proposed by the Technical Supervision Department of the Ministry of Chemical Industry. This standard is under the jurisdiction of China Lucky Film Company, the technical unit responsible for the standardization of photosensitive materials of the Ministry of Chemical Industry; the responsible drafting unit of this standard is China Lucky Film Co., Ltd.; the participating drafting units of this standard are China Lucky Film Group Chemical Industry Department Second Film Factory, Gongyuan Photosensitive Material Industry Company Black and White Film Factory China Printing and Equipment Industry Association. Drafters of this standard: Wang Ronghua, Wang Lei, Huang Linwei, Zhang Boling, HG/T2909--1997
ISO Foreword
ISO (International Organization for Standardization) is a worldwide joint organization of national standard groups (ISO member groups) to formulate international standards. The standardization is accomplished through ISO technical committees. Each member body interested in the subject for which a technical committee has been established has the right to participate in the technical committee: governmental and non-governmental international organizations may also participate in the work after contacting ISO. ISO cooperates closely with the International Electrotechnical Commission (TEC) on all matters of electrotechnical standardization. The draft international standard confirmed by the technical committee is circulated to the member bodies for voting. At least 75% of the members participating in the voting need to approve it before it can be published as an international standard. International Standard ISO6408 was prepared by ISO/TC42 Technical Committee on Photography. Annexes A, B and C of this international standard are indicative annexes. HG /T 2909—1997 The rapid development of phototypesetting technology and the lack of authoritative national standards have led to a surge in the specifications of equipment and photographic products. In order to minimize this surge and promote a reduction in the total number of photographic paper specifications currently in use, this international standard lists recommended and recognized paper sizes. It is hoped that with the cooperation of manufacturers of plastic photographic products and equipment, recognized sizes can be cancelled and only recommended sizes can be used. However, due to this booming industry, the criteria for calculating the size of new specifications of photographic paper that may be needed for future changes have been determined. Chemical Industry Standard of the People's Republic of China
Dimensions of roll photographic paper for photocomposition
HG / T 2909 —1997
idtISO6408:1991
Photography-Paper dimensions-Rolls for photocomposition Range
This standard specifies the nominal width and cutting width and their limit deviations of roll photographic paper used for photocomposition equipment, as well as the recommended shaft core size, winding direction and packaging markings. The length of photographic paper is not specified, but Appendix A gives a series of nominal paper lengths for guiding equipment manufacturers. This standard applies to non-perforated photographic paper, but since some older equipment still requires perforated photographic paper, Appendix B gives the specifications for perforation. Equipment manufacturers are actively encouraged to use only non-perforated roll photographic paper when designing new equipment. The corresponding standard for roll film for phototypesetting is HG/T2907--1997. This standard mainly uses metric units.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard: When this standard is published, the versions shown are valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards: HG/T 2907-1997 Dimensions of roll film for phototypesetting (idt ISO 3772: 1991 (E)) ISO 1: 1975 Standard reference temperature for industrial length measurement ISO 554: 1978 Specification for standard atmosphere for conditioning and/or testing ISO 6221: 1991 Determination of dimensional changes of photographic films and photographic papers 3 Conditions for measuring dimensions
The dimensions and limit deviations specified in this standard are applicable to measurements during manufacturing in accordance with ISO 5541 (see Appendix C) under atmospheric conditions of temperature (23 ± 2)°C and relative humidity (50 ± S)%. 4 Roll width
4.1 Recommended width
Recommended cutting width and its limit deviation shall conform to the values given in Table 1. 1) All measuring instruments shall be calibrated at a relative humidity of 20 (as specified in ISO 1) and 50% relative humidity. Approved by the Ministry of Chemical Industry of the People's Republic of China on May 23, 1997 and implemented on October 1, 1997
Nominal width
4, 2 Approved width
HG/T2909-1997
Recommended roll paper width
Cutting width
The temporarily approved cutting width and its limit deviation shall conform to the values given in Table 2. Table 2 Approved roll paper width
Nominal width
Cutting width
Limit deviation
±0, 2
Limit deviation
However, manufacturers of phototypesetting equipment are strongly encouraged to use only the recommended widths given in Table 1 in the design of their future equipment. 2
4.3 Rules for cutting and limit deviations
HG/T 2909 —1997
The rules for cutting and limit deviations of roll paper width are listed in Table 3. Table 3 Rules for cutting and limit deviations of roll paper Nominal width
120-260
Cutting width
Nominal value -0.2
Nominal value -0.4
Nominal value -0.8
The actual usable length of roll paper should not be shorter than the nominal length. The nominal paper length is not specified (see Appendix A). Joints
Roll paper for phototypesetting shall not have joints. 7 Core
7.1 Core length
The core length should be equal to the minimum width of the paper, with a limit deviation of -1. mm. 7.2 Core inner diameter
The recommended core inner diameter should be 50.7 mm ± 0.8 mm, but two other diameters are also recognized: 28.8 mm ± 0.3 mm and 71.9 mm ± 0.5 mm8 Perforated paper
Although new equipment is designed based on non-perforated paper, some existing equipment still requires perforated paper (see Appendix B)9 Winding
Limit deviation
It is recommended that the paper roll be wound on the core with the photosensitive side facing inwards. If it must be wound in a non-standard manner with the photosensitive side facing outwards, this should be clearly marked on the packaging.
It is recommended that the photo paper is not fixed on the core. However, for applications that require reverse operation, the photo paper can be fixed on the core with a pressure-sensitive adhesive tape and marked on the packaging.
It is recommended that when the photo paper is rolled on the core, the indentation of the core is symmetrical relative to the roll of photo paper. Never make one side of the core concave or convex.
"The actual width\including the lateral roll deviation should not exceed the maximum cutting width of the photo paper plus 1mm. 10 Packaging marking
10.1 Information
Sufficient information should be given on the packaging to ensure the correct use of the product. The packaging should be marked with:
a) product name and specifications;
b) usage conditions (such as safety lights);
c) transportation and storage conditions
HG/T2909—1997 ||tt| |Any given level of packaging shall meet one or more of the above requirements and shall therefore be identified using the appropriate of the following items:-Name or trade name of the product2》:
Name or trademark of the manufacturer:
Product identification number of the manufacturer:
A barcode information, if applicable;
Number of units contained in the package:
Nominal width and length in metric units, width first-Batch number and/or original reel number:
Warranty period or*Latest development period' or inventory control code: Manufacturer's recommended safe lighting conditions3): Manufacturer's recommended storage conditions3";
A mark for non-standard winding, if applicable2)3);-A mark for fixing the paper to the reel, if applicable2)3:-A mark for perforated paper, if applicable2)\)10.2 Conformity
If you want to indicate that your product complies with this standard, you should use the following wording: *Conforms to HG/T XXXX—XXXX\,
2) This item should be clearly visible on the unit packaging under recommended safe lighting conditions (excluding total darkness), 3) It can be indicated in words or codes,
Appendix A (Suggestive Appendix)
Nominal paper length
Because the thickness of the support used is different, the permissible paper length is different, so the nominal paper length is not specified. However, in order to guide equipment manufacturers in designing future equipment, the following recommended lengths are given: 30 m.45m. 60 m120 m.
Appendix B (Suggestive Appendix)
Perforated Photo Paper
B.1 Although new equipment is designed for non-perforated photo paper, some existing equipment still requires perforated photo paper. Paper with holes perforated on both sides is found in the following widths:
70 mm; 76. 2 mm (3in); 100 mm; 127 mm (5 in); 150 mm; 200 mm; 250 mm; 254 mm(10in): 310mm.
Paper with holes perforated on one side is found in the following widths; 101.6mm (4in); 152.4mm (6in): 203.2mm (8in): 254mm (10n)B.2 Due to the fragile nature of photo paper, perforations on one side cause the paper to wrinkle in the machine. The holes of paper with holes punched on both sides are skewed, so that the holes are not arranged in a straight line. For paper with a roll width of more than 130 mm, the position of the second row of holes should avoid the problem caused by the change of paper size due to aging and temporary shrinkage. B.3 The holes punched on both sides of the paper should comply with the dimensions shown in Figure B.1 and specified in Table B.1. A
0goo0g
Dimensions of roll paper for phototypesetting
Punching dimensions (see Figure B.1)
L (100 consecutive hole spacing)
Cutting width (see Tables 1 and 2)
4. 75±0.03
2. 80 ± 0. 03
1. 98± 0. 03
2. 00 ± 0. 25
475± 0, 40
0. 50 Nominal
When A250
When A≥250
Table B.1 (end)
The distance between holes punched on both sides is not specified to avoid problems caused by double dimensions and accumulated limit deviations. Large
0.25 MaximumwwW.bzxz.Net
0. 50 Maximum
If required by the design, the dimension and its related limit deviation can be derived from the data listed in Table B.1 using the following relationship: MrA-2(C+E)
R.4 The dimensions specified in Table B.1 are similar to the P-type holes shown in HG/T2695-95, however, the dimensional limit deviations of some parameters are greater than those of HG/T 2695--95 gives the large.
These larger limit deviations are necessary for phototypesetting papers, because most of the specifications are relatively wide. At these widths, the paper support is not absolutely flat or easy to bend. Therefore, these papers require larger dimensional limit deviations during manufacturing operations. Because these dimensional limit deviations are relatively large, it is recommended that when designing equipment, it is best to use the sheet edge guide next to the hole, and do not use a sprocket to match the guide in the hole: because the margin size E between the hole edge and the sheet edge has a larger limit deviation, the sprocket tooth width should be designed to be correspondingly narrower than the hole width C. For photo paper with holes on both sides, the sprocket teeth must be designed more precisely. It is usually used to drive the edge of the film opposite the guide edge. The distance E must be considered during the design, as well as the cross-hole distance M. B.5 Photo paper with holes on one side should preferably be wound in the winding direction A of GB6850-86, as shown in Figure B.2, with the photosensitive surface facing inward.
Figure B.2 Winding direction A
B.6 References
HG/T2695-95 Motion picture film size
GB6 850--86 Minimum content requirements for labels of unglazed film boxes 1
Standard search network Appendix C (suggestive appendix)
Dimensional stability
The specified dimensions and limit deviations are applicable to the production of photographic paper and should be measured after equilibrium under the standard atmospheric temperature (23±2) and relative humidity (50±5)% specified in ISO554. These dimensions may change with permanent aging shrinkage and temporary shrinkage or expansion caused by changes in environmental moisture content and temperature. For non-coated photographic paper, a 10% change in relative humidity can cause up to 0.3% dimensional change. However, within the warranty period of the photographic paper, the size when opening the package under the same environmental conditions as when packaged, temperature (23±2)℃, relative humidity (50±5)%, should not differ by more than ±0.5% from the size at the time of manufacturing. According to ISO6221, the photographic paper samples cut from the roll of photographic paper must be conditioned for at least 8H1 for non-plastic-coated paper and at least 14d for plastic-coated paper.6 References
HG/T2695--95 Movie film dimensions
GB6850--86 Minimum content requirements for unglazed movie film box labels 1
Standard search network Appendix C (suggestive appendix)
Dimensional stability
The specified dimensions and limit deviations apply to the production of photographic paper and should be measured after equilibrium under the standard atmospheric temperature (23±2) and relative humidity (50±5)% specified in ISO554. These dimensions may change with permanent aging shrinkage and temporary shrinkage or expansion caused by changes in environmental moisture content and temperature. For non-coated photographic paper, a 10% change in relative humidity can cause up to 0.3% dimensional change. However, within the warranty period of the photographic paper, the size when opening the package under the same environmental conditions as when packaged, temperature (23±2)℃, relative humidity (50±5)%, should not differ by more than ±0.5% from the size at the time of manufacturing. According to ISO6221, the photographic paper samples cut from the roll of photographic paper must be conditioned for at least 8H1 for non-plastic-coated paper and at least 14d for plastic-coated paper.6 References
HG/T2695--95 Movie film dimensions
GB6850--86 Minimum content requirements for unglazed movie film box labels 1
Standard search network Appendix C (suggestive appendix)
Dimensional stability
The specified dimensions and limit deviations apply to the production of photographic paper and should be measured after equilibrium under the standard atmospheric temperature (23±2) and relative humidity (50±5)% specified in ISO554. These dimensions may change with permanent aging shrinkage and temporary shrinkage or expansion caused by changes in environmental moisture content and temperature. For non-coated photographic paper, a 10% change in relative humidity can cause up to 0.3% dimensional change. However, within the warranty period of the photographic paper, the size when opening the package under the same environmental conditions as when packaged, temperature (23±2)℃, relative humidity (50±5)%, should not differ by more than ±0.5% from the size at the time of manufacturing. According to ISO6221, the photographic paper samples cut from the roll of photographic paper must be conditioned for at least 8H1 for non-plastic-coated paper and at least 14d for plastic-coated paper.
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