GB/T 14258-1993 Barcode symbol printing quality inspection GB/T14258-1993 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
The verification of printed quality of bar code symbol
The verification of printed quality of bar code symbol1Subject content and scope of application
This standard specifies the verification method of bar code symbol printing quality. This standard is applicable to the verification of the printing quality of various bar code symbols. 2 Reference standards
GB2828
GB 7705wwW.bzxz.Net
GB12053
GB 12508
GB 12904
GB 12905
GB 12906
Batch inspection sampling procedures and sampling tables by attributes (applicable to inspection of continuous batches)Lithographic decorative printed products
GB/T 14258-93
Alphanumeric character set for optical recognition Part 1: OCR-A character setShapes and dimensions of printed imagesAlphanumeric character set for optical recognition Part 2: OCR-B character setShapes and dimensions of printed imagesGeneral commodity barcodes
General terms for barcode systems
Terms of barcode symbols
China Standard Book Number (ISBN part)Barcode GB12907
GB 12908
Codabar Barcode
Sanjiu Barcode
GB/T 14257
3Terms
General Commodity Barcode Symbol Position
3.1 De-inking: Printing defect of the bar in the barcode symbol, its reflectivity is similar to the reflectivity of the space. 3.2 Stain: Printing defect in the empty or blank area of ​​the barcode symbol, its reflectivity is similar to the reflectivity of the bar. 3.3 Printing thickness: The difference in thickness between the bar and the space of the barcode symbol. 3.4 Magnification factor: The ratio of the length of the barcode symbol to the standard size. 4 Inspection items
4.1 Appearance
4.2 Bar (space) reflectivity, printing contrast (PCS value). 4.3 Bar (space) size error.
4.4 Blank area size.
4.5 Bar height.
4.6 Size of numbers and letters.
4.7 Check code.
4.8 Decoding accuracy.
4.9 Magnification factor.
Approved by the State Administration of Technical Supervision on March 20, 1993 281
Implemented on May 1, 1993
4.10 Printing thickness.
4.11 Printing position.
5 Technical requirements
5.1 Appearance
GB/T 14258--93
5.1.1 The surface of the barcode symbol is neat and tidy, without obvious dirt, wrinkles, damage or perforation. 5.1.2 The numbers, letters and special symbols in the barcode symbol are printed completely and clearly without ambiguity. 5.1.3 The barcode characters have no obvious ink loss, stains or line breaks, and the edges of the bars are neat and without obvious bending or deformation. 5.1.4 The ink color of the barcode characters is uniform, with no obvious differences. 5.2 The technical requirements of clauses 4.2 to 4.11 shall comply with the national barcode standards used by the samples. 6 Inspection methods
6.1 Environmental requirements: The temperature of the inspection room is 23±2°C, and the relative humidity is 50%±5%. 6.2 Sample processing
6.2.1 The sample should be flat, wrinkle-free and non-deformed. 6.2.2 When inspecting the barcode symbols on labels, labels and packaging, sufficient fixed dimensions should be retained around the sample. 6.2.3 When inspecting the barcode symbols on the physical packaging, the sample does not need to be processed. 6.3 Appearance
6.3.1 Self-inspection
The sample is placed under the Ds5 standard light source with a color temperature of 5500~6500K, and visually inspected according to clause 5.1. 6.3.2 Instrument inspection
6.3.2.1 Measuring instruments
Use microscope and mesh eyepiece micrometer. 6.3.2.2 Measuring steps
a. Use microscope and mesh eyepiece micrometer to enlarge and divide the stains and de-inking, and calculate their area according to the number of grids occupied by the stains and de-inking. Compare the area value obtained in a with the area value specified in the national barcode standard used for the sample. b.
6.4 Bar (blank) reflectivity
6.4.1 Measuring conditions
The measuring conditions shall comply with the national barcode standard used for the sample under inspection. 6.4.2 Measuring instruments
Use instruments that meet the requirements of clause 6.4.1. 6.4.3 Measuring steps
6.4.3.1 Instrument calibration.
6.4.3.2 Place a substrate under the sample. The substrate should be a diffuse reflective material with a reflection density of more than 1.50 and no spectral selectivity. 6.4.3.3 Take five measurement positions evenly in the longitudinal direction of the bar code character bar, and measure the reflectivity of each bar (space) from the start symbol to the end symbol one by one. Repeat the above steps for each height position. 6.4.4 Data Processing
6.4.4.1 Take the maximum value of the reflectivity of each bar and the minimum value of the reflectivity of each space at the same height position as the reflectivity of the bar (space) at this height position.
6.4.4.2 Take the maximum value of the reflectivity of each bar and the minimum value of the reflectivity of each space at five different height positions as the reflectivity of the bar (space) of the bar code symbol.
6.5 Printing Contrast (PCS Value)
The printing contrast (PCS value) is calculated according to formula (1). Where: RL is the reflectivity of the space in a barcode; Rp is the reflectivity of the bar in the barcode.
6.6 Bar (space) size error
6.6.1 The measurement conditions are the same as those in 6.3.1.
6.6.2 Measuring instrument
GB/T 14258-93
Length measuring instrument with a minimum graduation value of 0.01mm. 6.6.3 Measurement steps
(1)
Evenly select five measurement positions in the longitudinal direction of the barcode character bar, measure the size of each bar (space) one by one from the start symbol to the end symbol, and repeat the above steps for each height position measurement.
6.6.4 Data processing
6.6.4.1 Take the maximum and minimum values ​​of the size errors of each bar (space) at the same height as the maximum and minimum values ​​of the size error of the bar (space) at this height.
6.6.4.2 Take the maximum and minimum values ​​of the size errors of each bar (space) at five different height positions as the bar (space) size error of the bar code symbol.
6.7 Blank area size
Measure with a steel ruler with a minimum graduation value of 0.5mm under the light source specified in Article 6.3.1. 6.8 Bar height
Measurement method is the same as Article 6.7.
6.9 Number and letter size
Measurement method is the same as Article 6.7.
6.10 Check code
Check according to the calculation method specified in the national bar code standard used by the sample. 6.11 Decoding correctness
Check the result of reading the bar code symbol with the bar code reading equipment with the visual character. 6.12 Magnification factor
The measurement method of the bar code length size is the same as Article 6.7, and the magnification factor is calculated according to the definition of Article 3.4. 6.13 Printing thickness
Measure with a thickness gauge with a minimum graduation value of 0.01mm or an instrument of equivalent accuracy under the light source specified in clause 6.3.1. 6.14 Printing position
Visual inspection shall be carried out in accordance with the provisions of GB/T14257.
7 Inspection report
The inspection report shall be determined according to the inspection content of the sample. The inspection report of the general commodity bar code symbol is shown in Appendix A. The inspection report format of other types of bar code symbols is shown in Appendix A.
8 Sampling
This standard is sampled in accordance with the national standard GB2828. 286
Sample name
Inspection unit
Printing carrier
Inspection date
Inspection compliance standards
Test results
1. Appearance
5. Size of the blank area
7. Size of numbers and letters
9. Decoding correctness
11. Printing thickness
Reviewer:
Inspector:
GB/T14258-93
Appendix A
General commodity bar code symbol quality inspection report (reference)
General commodity bar code symbol quality inspection report Barcode number
Barcode type
Printing method
Inspection date
2. Bar (space) reflectivity
4. Bar (space) size error
6. Bar height
8. Check code
10.Magnification factor
12. Printing position
Year 199
Note: 1) "V" means qualified; \×\ means unqualified; "/\" means this item is not inspected
Serial number:
Additional instructions:
This standard is proposed by China Article Numbering Center. GB/T14258-93
This standard is drafted by China Article Numbering Center. The main drafters of this standard are Wu Hailian and Zhou Gang. 288
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