GB/T 9314-1995 General technical requirements for serial impact dot matrix printers
Some standard content:
National Standard of the People's Republic of China
Serial impact dot matrix printer
General technical conditions
General specification of serial impact dot matrix printer
1 Subject content and scope of application
GB/T9314
Replacement of GB 9311
This standard specifies the general technical conditions for serial impact dot matrix printers. The main contents include: terminology, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc. This standard applies to general serial impact dot matrix printers without display function. Special serial impact dot matrix printers can refer to it for implementation. 2 Reference standards
GB 191
Packaging, storage and transportation pictorial symbols
GB 1988
GB2312
Information processing Seven-bit coded character set for information interchange Basic set of Chinese coded character set for information processing interchange GB2423.8 Basic environmental regulations for electric and electronic products Test Ed: Free drop test method GB 2787
GB 3261
GB3909
GB 3911
GB4873
Seven-bit abbreviated character set for information processing and exchange; Layout of keystroke alphanumeric area; Width of woven printing ribbon for office machines and printers for information processing; Dot matrix shape of graphic characters for information exchange; Seven-bit coded character set for information processing; Graphical representation of control characters; Continuous format paper size and feed holes for information processing; GB49431
Safety of information technology equipment (including electrical business equipment); GB5007.1
Chinese character 24×24 dot matrix font set for information exchange; GB 5007. 2
GB 5080.7
GB 5792
GB 6107bzxz.net
Chinese character 24×24 dot matrix font data set for information exchange Equipment reliability test Failure rate and mean time between failures under constant failure rate assumption Verification test plan Serial impact dot matrix printer ribbon cartridge Use serial binary data exchange data terminal equipment and data circuit terminating equipment connection! GB6833.2 Test specification for electromagnetic compatibility of electronic measuring instruments - Magnetic field sensitivity test GB6833.3 Test specification for electromagnetic compatibility of electronic measuring instruments - Electrostatic discharge sensitivity test GB6833.4 Test specification for electromagnetic compatibility of electronic measuring instruments - Power supply transient sensitivity test GB6833.5 Test specification for electromagnetic compatibility of electronic measuring instruments - Radiated sensitivity test
GB6833.6 Test specification for electromagnetic compatibility of electronic measuring instruments - Conducted sensitivity test (GB6881 Determination of power level of acoustic noise source - Reverberation chamber precision method and one-pass method GB 9254
Radio interference limits and measurement methods for information technology equipment Approved by the State Administration of Technical Supervision on June 21, 1995, Implementation on June 1, 1996
GB/T 9314—1995
GB9655 Information processing equipment Spacing and line spacing of Chinese characters GB12508 Alphanumeric character set for optical recognition Part 2: (CR-B character set Image and size of printed images 3 Terminology
3.1 Character printer character printer Printer whose basic function is to print letters, numbers and symbols. 3.2 Chinese character printer Chinese character printeren Print head·Printer that can print one or more types of Chinese character dot matrix that meet the national standard requirements in one scan: 3.3 Graphic printer graphic printer Printer that can copy graphics with specified positioning accuracy, resolution and scale. 3.4 Printing speed print speed
The number of characters or Chinese characters that can be printed per unit time in the process of the print head moving from the beginning of the line to the end of the line. Unit: characters/second, or Chinese characters/sand.
averageprintspccd
3.5Average print speed
The number of characters that the printer can print per unit time when printing a full line continuously (including line breaks). Unit: characters/second. or Chinese characters/second, 3.6 Distance between rows The distance between the center lines of characters or Chinese characters printed in two adjacent lines. Unit: mm: 3.7 Distance between words--The distance between the center lines of two adjacent characters or Chinese characters in a printed line. Unit: mm. 3.8 Row width
The maximum number of characters that can be printed in a line when the word spacing is 2.54mm. Unit: characters/line. 3.9 Degree of making rows The maximum distance that the same needle prints a line and deviates from the reference position. Unit. mm3. 10 Degree of making rows DCGrce of Miaking columns The maximum distance that the intended dot column deviates from the reference position. Unit: mm3.11 Row reference axis The row reference axis is drawn in this row with the rated row spacing, taking the center line of any dot row in the previous row as the reference line. This is the row reference axis of this row, as shown in Figure 1. The figure assumes that the center line of the previous row coincides with the actual printed dot row. Center line of previous dot row
Line turning line of this row
Also line guide
Line line when paper is fed forward
Line center line of long row
·Center line of dot row
Rated line spacing
Figure 1 Row reference axis
GB/T9314—1995
3.12 Column reference axis The line perpendicular to the center line drawn from a printing point on the center line of any point row in the previous row is used as the reference line. Taking the rated character spacing as the unit, all straight lines drawn continuously and parallel to the reference line are the column reference lines on the corresponding column positions in this row, as shown in Figure 2. Rated Huahu Gallery
Select point
Specify reference line
Figure 2 Column reference line
3.13 Chu Paper Accumulated Error
paperadvanceaccumulated errorPoint row center line
On row center line
The printer prints continuously at the specified row spacing. Within the specified number of rows, the maximum distance that any point of the print result deviates longitudinally from the standard row position.
The standard row position of a needle of the print head is shown in Figure 3. The actual printing result is not drawn in the figure. From the printing point row center line
Rated row spacing
4 Technical requirements
4.1 Appearance and structural requirements
Figure 3 Standard row position
Standard row position
4.1.1 The product surface should not have obvious dents, scratches, cracks, deformation, etc. The surface coating should not bubble, crack or fall off. Metal parts should not have rust and other mechanical damage. 4.1.2 Each operating switch and button should be flexible, reliable and convenient. The selection switch for users should be easy to operate. 4.1.3 Paper loading and ribbon loading and unloading should be convenient.
4.1.4 The power supply and alarm indicator lights should be placed in obvious positions. 4.1.5 Each detection device should respond correctly and sensitively. 4.2 Environmental conditions
The product's climate and environmental adaptability are divided into three levels, see Table 1. 9.1
Relative humidity
Atmospheric pressure
4.3 Power supply conditions
Storage and transportation
Storage and transportation
4.3.1 The nominal value of the product power supply must be: Voltage: 220V;
Frequency: 50Hz.
GB/T 9314
535℃
40%~~80%
4.3.2 The power adaptability of the product is divided into three levels, see Table 2. Table 2
Rated voltage range
Rated frequency range
0～40℃
40~-55(
40%~90%
≤93%(40C)
86~~106kPa
198~~242
49~~51
Note: Voltage fluctuation is only for fluctuations of more than 0.2s. Transition changes within 0.25 are not specified. 4.4 Electromagnetic compatibility
4.4.1 Allowable value of radio interference
20%~90%(40 )
187~253
47.5~52. 5
The permissible value of radio interference of the product shall comply with the requirements of GB9254. The permissible value of radio interference specified by Class A or Class R shall be clearly specified in the product standard.
4.4.2 Sensitivity
4.4.2.1 Magnetic field sensitivity
The magnetic field sensitivity of the product must meet the requirements of Chapter 1 of GB6833.2. 4.4.2.2 Electrostatic discharge sensitivity
The electrostatic discharge sensitivity of the product must meet the requirements of Chapter 1 of GB6833.3. 4.4.2.3 Power supply transient sensitivity
The power supply transient sensitivity of the product must meet the requirements of Chapter 1 of GB6833.4. 4.4.2.4 Radiated sensitivity
GB/T 9314...1995
The radiated sensitivity of the product must meet the requirements of Chapter 1 of GB6833.5. 4.4.2.5 Conducted sensitivity
The conducted sensitivity of the product must meet the requirements of Chapter 1 of GB6833.6. 4.5 Safety requirements
The safety requirements of the product must meet the requirements specified in GB4943. 4.6 Main technical performance
4.6.1 Interface
The serial interface of the product shall comply with the provisions of GB6107. The parallel interface of the product shall be specified by the specific product standards. 4.6.2 Information code
4.6.2.1 Character information
The character information exchange code of the product shall comply with the provisions of GB1988. The basic shape and size of the dot matrix graphic characters in the product shall comply with the provisions of GB3909. If there are graphics representing control characters in the product, they shall comply with the provisions of GB3911. 4.6.2.2 Chinese character information
For products with basic Chinese character library, the Chinese character information exchange code shall comply with the provisions of GB2312. The Chinese character font dot matrix in the product shall comply with the provisions of GB5007.1, GB5007.2 and other corresponding national standards. 4.6.2.3 Other ethnic language information shall comply with the corresponding national standards. 4.6.3 Keyboard
For products with keyboard, the arrangement of characters on the keyboard shall comply with the provisions of GB2787. The character fonts on the keycaps of the keyboard shall comply with the provisions of GB12508. 4.6.4 Line width
The preferred line widths of the product are 40, 80, 132, and 136 characters/line. Other optional line widths are specified by specific product standards. 4.6.5 Printing speed and average printing speed
4.6.5.1 Printing speed
The printing speed of the product is specified by specific product standards. 4.6.5.2 Average printing speed
The average printing speed of the product is divided into three levels, see Table 3. Table 3
Average printing speed
Product category
Character printer
Character/second
Graphic printer
Character/second
Hanyu printer
Character/second
4.6.6 Line spacing
4.6.6.1 Character line spacing
The product must have a character line spacing of 4.233mm (6 lines/inch); B
80 180
30~~67
GB/T 9314...1995
If the product also has an optional line spacing, it should include a character line spacing of 3.175mm (8 lines/inch). b.
4.6.6.2 Chinese character line spacing
The Chinese character line spacing of the product must comply with the provisions of GB9655. 4.6.7 Character spacing
4.6.7.1 Character spacing
a. The product must have a character spacing of 2.51mm (10 characters/inch); b. The product also has an optional line spacing Character spacing should include 2.117mm Chinese character spacing (12 characters/ten) 4.6.7.2 Chinese character spacing
The Chinese character spacing of the product must comply with the regulations of GB9655. 4.6.8 Printing accuracy
4.6.8.1 Clarity
The characters printed by the product should be clear and legible, and the colors of the color printer should be clearly distinguishable 4.6.8.2 Linearity
According to the type of printer and the change of paper feeding direction, the linearity of the product printing should comply with Table 4 Table 4
Printing direction
Printer
4.6.8.3 Accumulated paper feeding error
Ningfu printer, Hanyu printer
Graphic printer
The product feeds 180 lines of paper in the same direction, and the accumulated paper feeding error (including skew) during the 60-line paper feeding shall comply with the provisions of Table 5: Table 5
Printer level
Accumulated error
4.6.8.4 Alignment
Character printer, Chinese character printer
Figure Graphic printer
According to the type of printer and the change of printing direction, the printing alignment of the product shall comply with the provisions of Table 6, Table 6
Printer
Printing direction
4.6.9 Paper handling function
Character printer, Chinese character printer
4.6.9.1 Paper handling mechanism
Graphic printer
The paper handling mechanism of the product shall comply with the requirements of Table 7. The requirements of the same level items in the table shall be available when asked, mm
GB/T 9314-—1995
Paper feeding mechanism
Jiang: I) A-level paper feeding mechanism only has roller or chain type. Single negative paper inserter
2) Printers using chain paper feeding mechanism shall be able to use printing paper that complies with GB4873 4.6.9.2 Number of copies
The copying capacity of the product shall comply with the requirements of Table 8. Table 8
Number of copies
Note: does not include the original.
4.6.10 Ribbon and ribbon cassette
4.6.10.1 Ribbon width
Automatic mode
Approach mechanism
The ribbon width used in the product shall comply with the provisions of GB3261. Monochrome printers shall preferably use ribbons with a width of 12.7*2mm. 4.6.10.2 Ribbon cassette
The ribbon cassette used in the product shall comply with the provisions of GB5792. 4.6.11 Alarm
The product shall issue an alarm signal in the following circumstances: a.
Self-detection shows that the hardware is faulty;
Self-detection shows that the firmware is faulty;
The paper is exhausted;
The carriage is out of bounds or stuck.
The self-test (program) of the product should have the following functions: a.
Check whether the hardware is wrong;
Can print all the characters and Chinese characters of the basic character set; Can reflect whether all the printing pins are normal. 4.6.13 Noise
The noise of the product is divided into three levels, see Table 9.
4.6.14 Vibration
GB/T9314--1995
The product is divided into three levels according to its vibration resistance, see Table 10. Table 10
Resonance search
Resonance hold
Vibration cycle
4.6.15 Shock
Frequency range
Sweep rate
Drive amplitude
or acceleration
Displacement amplitude
or acceleration
Frequency range
Drive amplitude
or acceleration
Sweep rate
5～~35Hz
10±0.5 min
5~~35~5 Hz
l oct/min
5~55 Hz
1.5 mm(5~~10 Hz)
0. 75 mm(10 ~ 25 Hz)
0.15mm(25~55Hz)
100.5 min
5~55~5 H2
1 cct/min
The product is divided into three levels according to its impact degree when not in operation, see Table 11Table 11
4.6.16 Package drop
Acceleration
Duration
Number of impacts
Three times on each side
The product is tested with the mass and height specified in Table 12 under the specified packaging conditions. 20
55-500112
20m/s2
20m/sa
30±1 min
55~~500~55Hz
Half normal
4.6.17 Reliability
Packaging quality
215~～30
≥30～40
40~~45
GB/T 9314
Drop height
The mean time between failures (MTBF) of the product is divided into three levels, and its m, value should not be lower than the value specified in Table 13. Table 13
Test method
5.1 Test environment conditions
Except for the climate environment test and reliability test, all other tests are conducted under the standard atmospheric conditions of the following tests: temperature:
Relative humidity:
Atmospheric pressure:
15~35C;
45%~75%;
86~106 kPa.
5.2 Appearance and structure inspection
The appearance and structure inspection shall be conducted by visual inspection. The product shall meet the requirements of Article 4.1. 5.3 Environmental test
5.3.1 General requirements
When conducting environmental tests, unless otherwise specified, the tested product shall not be added with any protective packaging. 5.3.2 When changing the temperature during the test, the average rate of temperature change shall be 0.7~1℃/min. There shall be no condensation. 5.3.3 High temperature test
5.3.3.1 Operating temperature upper limit test
The product power supply shall be placed in the disconnected position. Put it in the test box, and let the temperature inside the box rise to the value specified in Table 1. When the temperature reaches a stable state, turn on the power for 2 hours, and the self-test prints for 20 minutes every hour. The tested product should work normally. During this specified time, the temperature change in the test box should not exceed ±2°C.
5.3.3.2 Storage and transportation temperature upper limit test
The power supply of the product is disconnected. Put it in the test box, and let the temperature inside the box rise to the value specified in Table 1. When the temperature reaches a stable state, store it for 100
GB/T9314.-1995
2h. During this specified time, the temperature change in the test box should not exceed ±2°C. After the test period expires, reduce the temperature in the test box to the standard atmospheric conditions of the test in Article 5.1, and restore it under this condition for 2 hours. The appearance inspection should meet the requirements of Article 4.1, and the self-test prints for 10 minutes. The tested product should work normally.
5.3.4 Low temperature test
5.3.4.1 Lower limit test of operating temperature
The power supply of the product is in the disconnected position. Put it in the test box and let the temperature in the box drop to the value specified in Table 1. After the temperature stabilizes, turn on the power for 2 hours. During this period, the self-test prints continuously for 20 minutes every hour (self-test can be done remotely outside the box). The tested product should work normally: during this specified time, the temperature change in the test box should not exceed +3 (. 5.3.4.2 Storage and transportation temperature lower limit test
The power supply of the product is disconnected. Put it in the test box. Let the temperature in the box drop to the value specified in Table 1. After the temperature stabilizes, store it for 2 hours. During this specified time, the temperature change in the test box should not exceed 23°C. During the test, in order to prevent the product from freezing and condensing, it is allowed to seal the product with a moisture-proof film for testing. If necessary, a moisture absorbent can be placed in the sealing sleeve.
After the test period expires, the temperature in the test box is raised to the standard atmospheric conditions of the test in Article 5.1, and it is restored under this condition for 2 hours. The heating time in the test box is not included in the recovery time.
The appearance of the inspection should meet the requirements of Article 4.1. The power-on self-test prints 10 min, the product under test should work normally. 5.3.5 Steady-state humidity test
5.3.5.1--General requirements
When conducting the test, the humidity-sensitive recording media used on the product under test can participate in the test according to the conditions specified in the media (such as printing paper) technical standards.
5.3.5.2 Working humidity upper limit test
The product power is turned off and placed in the test chamber. The temperature in the chamber is adjusted to the working temperature and humidity upper limits specified in Table 1 (the temperature of Class C products is 4 0℃) value, so that the temperature reaches a stable value, then start to input water vapor, and make the temperature and humidity reach the values specified in Table 1 within 1 hour. These two times are not included in the storage time. The storage time is 48 hours. After the storage period expires, the appearance should be immediately inspected to meet the requirements of Article 4.1. Power-on self-test printing for 10 minutes, and the tested product should work normally. During this specified time, the temperature change in the box should not exceed ±2 (, and the relative humidity test change should not exceed ±2% to -3%. 5.3.5.3 Storage and transportation conditions humidity test||tt| |The product power supply is turned off, placed in the test chamber, and the temperature and humidity in the test chamber are adjusted to the values specified in Table 1 according to the method in 5.3.5.2. The storage time in the chamber is specified by the product standard (at least not less than 48 hours). During this time, the temperature change in the chamber should not exceed +2%, and the relative humidity change should not exceed -3% to +2%. After the storage period expires, stop the water vapor input first, and then disconnect the heat source. The relative humidity in the test chamber should drop to 753% within 30 minutes. The temperature in the chamber should be adjusted to the values specified in Table 1. These two items are The time is not included in the recovery time. The test product recovers for 2 hours under this condition. After the recovery period expires, the appearance inspection should meet the requirements of Article 4.1. Power-on self-test printing for 10 minutes, the test product should work normally. 5.4 Power adaptability test
The product should work normally after self-test printing for 10 minutes according to the values specified in Table 2. 5.5 Electromagnetic compatibility test
5.5.1 Radio interference limit test
Perform according to the measurement method in GB9254, and the measured values should meet the requirements of Articles 4 and 4.1. 5.5.2 Sensitivity test
5.5.2.1 Magnetic field convergence sensitivity test
Perform according to the test equipment and methods specified in GB6833.2, and meet the requirements of Article 4.4.2.1. 5.5.2.2 Electrostatic discharge sensitivity test
Perform the test equipment and methods specified in GB6833.3. It should comply with the requirements of Article 4.4.2.2.19]
5.5.2.3 Power supply transient sensitivity test
GB/T9314-:1995
Perform the test equipment and methods specified in GB6833.4. It should comply with the requirements of Article 4.4.2.3. 5.5.2.4 Radiated sensitivity test
Perform the test equipment and methods specified in GB6833.5. It should comply with the requirements of Article 4.4.2.4. 5.5.2.5 Conducted sensitivity test
Perform the test equipment and methods specified in GB6833.6. It should comply with the requirements of Article 4 .4.2.5 requirements, 5.6 safety test
Perform in accordance with the relevant provisions of GB4943.
5.7 Interface test
Connect a host or a verified simulator that is compatible with the interface of the test product to the test product. The host (or simulator) sends an interface test program to test the correctness of the status of each signal line on the interface. It must comply with the provisions of 4.6.1. The serial interface should test its entire transmission rate and must meet the requirements of the specific product standards. The total number of prints during the test shall not be less than 60 lines. 5.8 Information code test
When the product is in the online working state, the host starts the program to test the printer function. The test product shall meet the requirements of 4.6.2. The test time shall not be less than 10 minutes.
5.9 Keyboard
The keyboard arrangement of the product and the font of the characters on the keycaps shall be visually inspected to comply with the provisions of Article 4.6.3. 5.10 Line width
When the product is in the online working state, the host starts the program to test the printer function. The tested product shall meet the requirements of Article 4.6.4. The test time shall not be less than 10 minutes.
5.11 Printing speed test
When the product is in the offline working state, the total time from the first column to the last column of the needle is measured divided by the number of characters in a line and shall meet the requirements of Article 4.6.5.
5.12 Average printing speed test
5.12.1 The working state of the product must meet the following items: a. In the online working state Under this condition, the host sends character codes (all characters in GB1988) or Chinese character code changes (first-level Chinese characters in the middle part of GB2312):
The information transmission rate between the host and the test product should be selected to minimize the printing waiting time of the test product; h.
Monochrome normal density printing;
d. The character dot matrix meets the requirements of Article 4.6.2; e. The character line spacing and word spacing meet the requirements of Item a. in Article 4.6.6.1 and Item a. in Article 4.6.7.1 respectively; The Chinese character word spacing should be selected so that there is a certain gap between each adjacent word, and the ratio of line spacing to word spacing is not less than 1.3. 5.12.2 The test product prints more than 50 lines in a row, and its average printing speed should meet the specific product standards. 5.13 Inspection of line spacing and character spacing
Products shall be measured with a tool microscope during finalization inspection and routine inspection in accordance with the requirements of 4.6.6 and 4.6.7. The monthly measurement method shall be used for delivery inspection:
5.14 Printing accuracy inspection
5.14.1 Clarity inspection
Monthly measurement method shall be used to inspect and meet the requirements of 4.6.8.1. 5.14.2 Line spacing inspection
In the online working state, the line spacing shall meet the requirements of 4.6.6.1 a.The test product continuously changes the paper feeding direction, prints the "" symbol for 30 lines, and measures its line formation, which should meet the requirements of the "direction" column in Table 4. The specific inspection method shall be carried out according to Appendix B (reference). 5.14.3 Accumulated paper feeding error test
In the online working state, the line spacing should be carried out under the condition of meeting the conditions of item a. in Article 6.6. ". The test production is continuously full-line marked with "-" symbol for 180 lines (or 3 negatives), and the 60 lines with the largest continuous error are taken to measure the accumulated paper feeding error. The error should meet the requirements of Article 4.6.8.3. The specific test method shall be carried out in accordance with Appendix B (reference). 5.14.4 Alignment test
In the online working state, the line spacing is carried out under the condition of meeting the conditions of item a. in Article 4.6.6.1. The product under test prints 60 lines of "full line" symbols continuously. The degree of alignment shall meet the requirements of 4.6.8.4. The specific inspection method shall be carried out in accordance with Appendix B (reference). 5.15 Paper handling function inspection
The product under test shall specify the corresponding paper handling function inspection method in the product standard according to the functions of the different paper handling mechanisms:
5.16 Number of copies inspection
The product under test shall specify the corresponding number of copies inspection method in the product standard according to the copying capacity level and paper specifications.
5.17 Ribbon and ribbon cassette inspection
The product under test shall specify the corresponding ribbon and ribbon cassette inspection method in the product standard according to the ribbon mechanism and the ribbon and ribbon cassette used.
5.18 Alarm inspection
The product under test shall specify the corresponding alarm function inspection method in the product standard according to the various alarm functions it has. 5.19 Self-test inspection
The test product shall specify the corresponding inspection methods and steps in the product standard according to the self-test function it has. 5.20 Noise test
In the acoustic laboratory, the test product is placed in the repeated working state of Article 5.12, and a Class A noise meter is placed 1m away from the test product. The front, back, left, right and top are measured once each. The average value shall comply with the provisions of Table 9. If there is no acoustic laboratory condition, it can be measured in a free sound field. The test method can refer to Appendix C (reference), but the noise value calculated by this method is not used for arbitration.
The Chinese character printer is measured when printing Chinese characters, and the character printer and graphic printer are measured when printing characters. 5.21 Vibration test
The test product shall be subjected to vibration test according to the requirements of Table 10. During the test, the product shall not have any mechanical damage or in-machine adjustment, and the fastening parts shall not be loose.
5.21.1 Test sequence
a, resonance search;
b. Resonance retention;
Vibration cycle;
Repeat resonance search.
5.21.2 Resonance search
In one axial direction, perform scanning vibration on the test product according to the provisions of Table 10, and record the resonance points on each axial direction. When there are many vibration points, take 4 larger resonance points on each axial direction. 5.21.3 Resonance retention
Perform resonance retention test on the resonance points on the three axial directions of the test product according to the provisions of Table 10. aA-level test product: If there is no obvious resonance point in the range of 5 to 35Hz, it should be vibrated at a frequency of 35Hz with an amplitude of 0.15mm for 10 minutes;
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