This standard specifies the technical specifications for diazonium salt positive image printing paper. This standard applies to diazonium salt photosensitive paper that directly obtains positive images after contact copying with transparent or semi-transparent originals and ammonia fumigation development. QB/T 2205-1996 Diazonium Salt Positive Image Printing Paper QB/T2205-1996 Standard download decompression password: www.bzxz.net

QB/T 2205—1996
This standard confirms QB738-1980 "Diazo Salt Image Printing Drawing", and its content is mainly changed as follows: It is written according to GB/T1.1--1993 "Guidelines for Standardization Work Unit 1: Drafting and Expression Rules of Standards Part 1: Basic Regulations for the Writing of Standards".
The atmospheric conditions of 23℃ and 50% relative humidity are adopted. The folding endurance is adjusted accordingly in the technical requirements. The inspection rules adopt the provisions of GB/T2828-1987 "Batch Inspection Count Sampling Procedure and Sampling Table (Applicable to the Inspection of Continuous Batch)".
This standard is proposed by the Food Papermaking Department of China Light Industry Association. This standard is under the jurisdiction of the National Papermaking Standardization Center. The drafting unit of this standard: Beijing Papermaking Factory No. 1. The main drafter of this standard: Qiu Gangyi.
From the date of implementation of this standard, the former Ministry of Light Industry Standard QB738-1980 "Diazo Salt Positive Image Printing Paper" shall be invalidated. 419
1 Scope
Light Industry Industry Standards of the People's Republic of China
Diazo Salt Positive Image Printing Paper
This standard specifies the technical specifications of diazonium salt positive image printing paper. QB/T 2205-1996
This standard is applicable to diazonium salt photosensitive paper that directly obtains positive images after contact copying with transparent or semi-transparent originals and nitrogen fumigation development.
2 Cited 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, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T450-1989 Paper and paperboard sampling GB/T 457.--1989
Determination of paper folding endurance
GB/T 2828—1987
GB/T 7974—-1987
Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches) Paper and paperboard whiteness determination method (diffuse/vertical method) GB/T8940.1—1988
Paper and paperboard whiteness determination method
45/0 directional reflection method
GB/T 10342--1989
GB/T 10739—1989
QB/T 3506—1999
3 Product classification
3.1 The printing paper is roll paper.
4 Technical requirements
Paper packaging and marking
Standard atmospheric printing paper for pulp, paper and paperboard sample processing and testing
The printing paper shall be made of printing paper in accordance with the provisions of QB/T3506. 4.1
4.2 The specifications of the roll printing paper are 930mm, 880mm, 630mm in width or produced according to the contract. 4.3 The technical indicators of the printing paper shall comply with the provisions of Table 1. Table 1
Indicator name
Photographic speed
Maximum color density
Color light fastness
Not less than
Not less than
Approved by China Light Industry General Association on March 22, 1996
60～70
Implemented on December 1, 1996bzxZ.net
Indicator name
Color water fastness
Whiteness of base color| |tt||Folding endurance (number of reciprocating times)
Developing speed
Curl
Not less than
Not less than
Not greater than
Not greater than
QB/T2205—1996
Table 1 is complete)
4.4 The paper surface should be flat, and the surface photosensitive layer of the paper should be evenly coated. No white spots, spots, folds, wrinkles, or drug stains are allowed. 4.5 When copying the paper, the lines should be clear (2mm2 small characters and 0.1mm lines can be clearly observed by the naked eye). Blue line
4.6 The length of the paper before and after the joint should not be less than 10m. Every time a joint appears, 1m should be added to the paper roll. The joints should be neat and marked. 4.7 The shelf life of the paper before development should be no less than 6 months (moisture should be strictly controlled). 4.8 The following conditions may be classified as second-class products, but no more than two conditions may be found at the same time. a) Uneven coating, but the base color is still clear after exposure; b) White spots no larger than 1 cm2 on the paper surface, spots (measured by the maximum length) within three within 1m2, but no more than 50 per roll of 100m;
c) Dark streaks on the paper surface are no longer than 15cm, no wider than 3cm, and no more than 3 per roll of 100m; d) There are cracks within 5mm in width and drug ulcers within 1cm on one side of the paper; e) The number of joints per roll of paper is no more than two. 5 Test methods
5.1 The sampling of samples shall be carried out in accordance with the provisions of GB/T450. 5.2 The processing of samples shall be carried out in accordance with the provisions of GB/T10739. 5.3 Determination of photosensitive speed
5.3.1 Instruments
a) 10 cyan fluorescent lamps (20W, illumination 25001x±1001x, temperature 35℃～40℃); b) elastic paper press;
c) opaque board;
d) stopwatch;
e) ammonia fumigation.
5.3.2 Test steps
Put the paper with the drug coating side down and measure it with the following method. Put an opaque board (such as black cardboard, thin iron plate, etc.) between the light source and the drug, move it outward about 15cm every 5s, and then carry out ammonia fumigation to determine the photosensitive speed in seconds. 5.4 Determination of maximum density of color
Take two (folded in half) 100mm×100mm paper samples that are completely unexposed and fully developed, and use a densitometer to measure the density values ​​of five points on the diagonal line. The arithmetic mean is taken as the maximum density of the paper. 5.5 Determination of color fastness
5.5.1 Instrument
One ultraviolet lamp (30W, voltage 220V) is placed in a metal lampshade painted with white paint. 5.5.2 Test steps
QB/T2205—1996
Take a 40mm×80mm ammonia-fumigated sample, cover half of the sample with black opaque paper, and place it under the ultraviolet lamp. The distance between the lamp and the paper surface is 20mm. The ultraviolet light directly irradiates the other half of the sample. After irradiation for 48 hours, measure the density of the irradiated part and the unirradiated part at the same time to compare and see the decrease number.
5.6 Determination of color water fastness
Take a 50mm×50mm ammonia-fumigated sample, place it in 20℃ tap water, soak it for 5 minutes, then take it out, use filter paper to absorb the surface moisture, measure its density and compare it with the unsoaked paper sample to see the decrease number. 5.7 Whiteness shall be measured according to GB/T8940.1 or GB/T7974. During arbitration, it shall be measured according to GB/T7974. 5.8 Folding resistance shall be measured according to GB/T457. 5.9 Determination of development speed
Take a 30mm×150mm paper sample and clamp it with a clip and place it in a specimen bottle (clip length 35mm, bottle diameter 120mm, length 300mm), fill the bottle with 100mL of 25% nitrogen water, maintain the temperature of the ammonia water (water bath insulation) at (40±1)℃, measure the time of complete coupling (i.e. the time when the yellow paper turns completely blue), take the arithmetic mean of 5 paper samples, and add 3.5mL of ammonia water after measuring 10 paper samples. 5.10 Determination of curl
Take two 300mm (vertical)×200mm (horizontal) paper samples and fully develop them. After balancing for 30 minutes in an environment with normal room temperature and relative humidity of 50%~~60%, test them. Place the two paper samples on a flat surface, one facing up and the other facing down, measure and record the maximum arch of any part of the paper sample from the plane, expressed in millimeters, and indicate the direction of curling. 5.11 Take out a paper sample with a width of 20cm and a full length from the paper roll produced in the workshop, roll it up tightly, wrap it (the packaging method is the same as that of the large roll), and place it in a constant humidity box or aging instrument at a temperature of (40±1)℃ and a relative humidity of 80%. If there is no change for three days and three nights, it is considered to be qualified for the shelf life. 6 Inspection rules
6.1 The supplier shall ensure that the product meets the requirements of this standard, and a product quality certificate shall be attached when delivering the product. 6.2 The number of deliveries at one time is considered as a batch, but it shall not exceed 90 boxes. 6.3 The sampling for delivery inspection shall be carried out in accordance with the provisions of GB/T2828, and the sample unit is box. The sampling plan and batch judgment shall comply with the provisions of Table 2. Table 2
1～25
Normal inspection secondary sampling plan inspection level Class ⅡB non-conforming products
Sample size
Class C non-conforming products
AQL = 6.5
Classification of non-conformity
Class C non-conformity
Class B non-conformity
Color fastness to sunlight
Color fastness to water
Photographic speed
Color maximum density
Whiteness of base color
Folding endurance
Developing speed
Curl
Appearance quality
6.4 If the buyer has any objection to a batch of products, he shall notify the supplier for re-inspection within 1 month after arrival. If it does not meet the requirements of this standard, it shall be judged as a batch non-conformity and the supplier shall be responsible for handling it; if it meets the requirements of this standard, it shall be judged as a batch qualified and the buyer shall be responsible for handling it. 7 Marking, packaging, transportation, storage
7.1 The packaging of the drying drawings shall be carried out in accordance with the provisions of GB/T10342. Under the premise of ensuring the shelf life of the drying drawings, each region shall determine the packaging according to the material supply situation or carry out it according to the contract provisions. 7.2 Each box of paper should be labeled with a trademark and indicate the color, specification, grade, production date, expiration date, etc. 7.3 The product should be stored in a ventilated and dry warehouse, and be careful to prevent moisture and sunlight, and prevent the influence of alkaline chemicals. 7.4 During transportation, a canopy and clean transportation vehicle should be used, and it is strictly forbidden to drop from a high place. 422
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