This part of GB/T 20226 specifies the characteristics of four-channel envelopes for 16mm microfilm, two-channel envelopes for 35mm microfilm, one 35mm and two 16mm channel envelopes, and two 35mm and one 16mm channel envelopes. This part is applicable to the production of different types of envelopes for 16mm and 35mm microfilms. GB/T 20226.2-2006 Microfilming Technology Microfilm A6 Size Envelopes Part 2: Other Types of Envelopes for 16mm and 35mm Microfilms GB/T20226.2-2006 Standard Download Decompression Password: www.bzxz.net
This part of GB/T 20226 specifies the characteristics of four-channel envelopes for 16mm microfilm, two-channel envelopes for 35mm microfilm, one 35mm and two 16mm channel envelopes, and two 35mm and one 16mm channel envelopes. This part is applicable to the production of different types of envelopes for 16mm and 35mm microfilms.

ICS 37.080
National Standard of the People's Republic of China
GB/T 20226.2—2006
Micrographics-A6 size microfilm jackets—Part 2:Other types of jacket for 16 mm and 35 mm microfilm(IS0 8127-2.1999, M0D)
2006-04-19 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2006-10-01 ImplementationWww.bzxZ.net
061205000046
GB/T20226 "Microfilm A6 size envelope for microfilm technology" is divided into two parts: Part 1: Five-channel envelope for 16mm microfilm; Part 2: Other types of envelopes for 16mm and 35mm microfilm. This part is Part 2 of GB/T20226. KANrKAca-
GB/T20226.2--2006
This part is modified by ISO)8127-2:1999 "Microfilm technology A6-inch microfilm cover Part 2: H and other types of covers for 1fmm and 35rmm microfilm" (English version). The main technical differences between this part and ISO8127-2:1999 (English version) are as follows: - In the normative reference documents, national standards and current international standards are used instead of the corresponding international standards; - References are no longer included as Appendix A, and national standards are used instead of the corresponding international standards. Correct the following calculation errors according to the values ​​in Table 1: (1) Figure 2c 59.3 is changed to: =59.2;
(2) Figure 3—α8,2 is changed to >7.3, 620.2 is changed to b=21,1,=48.8 is changed to c-49.4, d=67.3 is changed to d=67.9, r=85.6 is changed to e=86, 4; (3) Figure 4---az7 is changed to a>6c=59.3 to -59.2, d=88 to d=87.5, -Figure 1 f65 to f=66±Q.15;
Positioning hole positions 48, 4110.2 in Figures 1, 2, 3 and 4 are changed to 48.4±0.2 Item A of Table 1 35mm film channel "38.1+0.15\ is changed to *38.1-0.15\; Item C of Table 1 Type 2: four 16mm film channels *>65\ is changed to \66-0.15". Appendix A of this Part is an informative appendix.
This Part was proposed and managed by the National Technical Committee for Standardization of Document Imaging Technology (SAC/TC86). This Part was drafted by the Fourth Sub-Technical Committee of the National Technical Committee for Standardization of Document Imaging Technology (SAC/TC86/SC-4). The main drafters of this part are Sun Jinglai and Guo Yudong. This standard is published for the first time.
GB/T 20226. 2—2006
Microfilm envelopes are a means of arranging and interrelated groups or sections of multiple information units in microfilm form. This arrangement can be modified or added without reshooting the entire content. Envelopes are mainly used for linked microfilm systems, but can also be used as storage packaging for strips or single-frame microfilms. In order to help users and manufacturers of microfilm equipment, it is necessary to standardize the basic requirements of envelopes. Information systems using envelopes must not only have envelopes, but also envelope film loaders, microfilm holders, readers, reader-copiers and copiers. When planning a system that uses different microfilm formats, it is advisable to consult the relevant national or international standards and select appropriate hardware to ensure system compatibility.
The envelope consists of a support sheet and a thinner cover sheet, which is fixed to the support sheet with a certain distance and forms a film path, so that the microfilm can be inserted into the film path. The cover sheet is the side that contacts the photosensitive film when copying. Envelopes are divided into two categories: envelopes with locating holes and envelopes without locating holes. Some film capture machines can handle both types of envelopes, while other envelope loading machines can only handle certain types of envelopes. However, all types of envelopes are suitable for use in readers, copiers and enlargers. These types of envelopes are divided into two types: one with the cover sheet on the back and the other with the cover sheet on the front to accommodate different generations of microfilm. The cover sheet on the back is more common. This cover is a microfilm produced by photographing with a flat camera or a rotary camera with an even number of mirrors.
Microfilm is always inserted into the cover with the image-bearing side in contact with the cover sheet. When inserted in this way, the microfilm reads right side when viewed from the support sheet side and the header also reads right side. Second generation microfilm should not be inserted into the cover. If necessary, the specific requirements for the original should be followed. This standard specifies the dimensions and other basic requirements for microfilm A6 size covers. This part applies to microfilm covers consisting of a transparent support sheet and a cover sheet bonded together and divided into multiple channels to accommodate single or multiple 16 mm or 35 mm microfilms and including a header area.
1 Scope
Microfilm technology
Microfilm A6 size cover
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GB/T 20226.2---2006
Part 2: Other types of covers for 16 mm and 35 mm microfilms (This part of GB/T 20226 specifies "Characteristics of four-channel covers for 16 mm microfilm, characteristics of two-channel covers for 35 mm microfilm, characteristics of one 35 mm and two 16 mm channels, and characteristics of two 35 mm and one 16 mm channels Features of mm film channel envelopes.
This part applies to the production of different types of envelopes for 16mm and 35mm microfilms. 2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of GB/T 20226. For any dated referenced document, all subsequent amendments (excluding error-promoting content) or revisions are not applicable to this part. However, parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For dated references, the latest version shall apply to this section.
GB/T6159.1-2003 Microfilm Vocabulary Part 1: General Terms (ISO6196-1: 1993, MOD) GB/T6159.3-2003 Microfilm Vocabulary: Part 3: Film Processing (ISO6196-3: 1997, MOD) Microfilm Vocabulary Part 4: Materials and Packaging (ISO6196-4: 1998, MOD) GH/T 6159:4—20031
GB/T 6159. 5 -~2000
6196-5:1987)
Micrographic vocabulary Part 5: Quality, readability and inspection of images (eqy ISO Micrographic vocabulary Part f: Equipment (ISO) 6196-6:1992, M0D) GB/T 6159. 6---2003
GB/T 6159.222000 Micrographic vocabulary Part 2: Layout and recording methods of images (cqvISO) 6196-2:1993)
GB/T 6161-1994 Characteristics of micrographic test No. 2 and its application in microfilm (qTSC) 3334:1989)
GB/T 6847—1995
Determination of curl of photographic film and paper (iitIS0)/DIS43301993)GB/T184052001 Microfilming technology ISO character and: characteristics of test charts and their use (idtISO) 446:1991)S () 6148:2001 Photographic film dimensions Microfilming technology (2001 version replaces 1993 version) IS011906:2000 Imaging materials Specifications for safety film for photography IS018911:2000 Imaging materials Processed safety photographic film stored in 3 Terms and definitions
GB/T 6159.1—2003, CB/T 6159.3-2003, (GI/TG159.4-2003, GI3/T6159.52000, GB/T6159.62003 and GB/I6159.22-2000 The terms and definitions in this standard apply to this part: 4 Physical characteristics (see Figure 1)
4.1 Envelope dimensions
The overall dimensions of an A6 size envelope shall be:
1053.smm×148mm+0.25mm
GB/T20226.2-2006
4.2 Channel arrangement
The envelope shall have a number of horizontal channels that can accommodate 16mm and/or 35mm microfilms. 4.3 Channel width
The minimum width of a 16mm channel shall be 16.3mm, and the minimum width of a 35mm channel shall be 35.4mm, so as to facilitate the insertion of microfilms.
4.4 Socket
The socket is the channel entrance, which shall be wider than the width of the microfilm and symmetrical with respect to the channel centerline. The dimensions and position of the socket are shown in Figures 1, 2, 3 and 4. When the header is read upright and the support film faces the observer, the socket should be at the right end of the envelope. Note: The shape of the socket is optional and is determined by the manufacturer. 4.5 Envelope positioning hole (optional)
If there is a positioning hole, the diameter of the circular hole should be 1.4mm ± 0.03mm and it should be located at the position shown in Figures 1, 2, 3 and 4. The hole farthest from the socket can be a circular hole or an oblong hole.
4.6 Film track center line
The distance between the center lines of the film tracks and the distance from the center line of the uppermost film track to the center line of the two positioning holes (when the positioning holes are used) or the bottom edge (when the positioning holes are not used) shall be as specified in Table 1.
All center lines should be parallel to the bottom edge of the envelope Table 1 Distance between the center lines of the film tracks and the distance between the center line of the top film track and the center line of the positioning holes or the bottom edge 16mm film track
Distance between two film tracks
am Film track center line to adjacent film track center line 16
am Film track center line to adjacent film track center line 35m
Distance between the center line of the top film track and the center line of the two positioning holes Distance from the center line of the top film track to the bottom edge Type 2 Four 16mm film tracks
Type 3, two 35mm film tracks
Type 4:
35mm film 5: Two 16mm film channels and one 16mm film channel
28.3±0.15
11.8±0.15
Unit is millimeter
35mm film channel
28.3±0.15
38.1±0.15
58.3±0.15
75.8±0.15
76.9±0.15
Note: For envelopes with positioning holes, C is mandatory and C is optional; for envelopes without positioning holes, C is mandatory and there is no B. 4.7 Header area
The header area should be specified between the topmost film channel.
4.8 Header Area Coating (Optional)
Measured from the top edge of the envelope, its minimum width shall conform to Figures 1, 2, 3 and 4. Any coating or treatment shall be on the non-reading side and shall extend from the top edge of the support sheet to approximately the top edge of the first sheet divider. 4.9 Colour Mark
If a colour mark is used, it shall be along the top edge of the header area and shall be 1.2 mm ± 0.4 mm wide. 4.10 Cover Sheet Identification
If a cover sheet identification mark is used, it shall be located in the upper right corner of the envelope when the envelope is held with its long side in a vertical position with the cover sheet facing the viewer.
This standard does not exclude the use of rounded corners, bevels or notches for archival or indexing purposes. 4.11 Coding Notch
When notch coding is used, the notch shall be cut into the top edge of the envelope to a depth of 1.6 + 4 mm. 2
4.12 Parallelism
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The strip separation area should be parallel to the center line of the two positioning holes or the bottom edge of the envelope, and the tolerance is ±0.2mm in the entire length of the envelope.
4.13 Verticality
The verticality of the envelope should be located independently by two ideal rectangles, and they should be used for comparison inspection at the same time. One of the two rectangles has the minimum tolerance specified in 4.1, and the other has the maximum tolerance. No point on the periphery of the envelope should fall within the smaller rectangle or outside the larger rectangle (see ISO6148:2001). 4.14 Warp or bend
When the empty envelope is placed on a flat surface, the warp or bend of the envelope in any direction shall not exceed 6.5 mm above the flat surface when measured by the method described in Chapter 5
4.15 Wrinkles, scratches, spots
The envelope shall not have wrinkles, scratches or spots that may affect the viewing or reproduction of images. 4.16 Envelope material
The security transparent material used to make the envelope shall not have a detrimental effect on the microfilm in the film channel. The material shall comply with the previous technical requirements of ISO11906:2000 and ISO 18911:2000. The envelope material shall not cause damage to the film that may affect the viewing or reproduction of images, nor cause damage to the envelope itself during the insertion and removal of films.
5 Test method
5.1 Warp or bend S
Warp or bend shall be measured according to method C in GB/T6847-1995. Place an empty envelope with the convex side facing downward on a flat surface and place it at 23±2)℃ and (50±5)% relative humidity for at least 6 hours. No part of the envelope shall be more than 6.5mm above the flat surface. Use a hand-held scale to make it perpendicular to the flat surface and as close to the warped or bent part as possible to measure the degree of warp or bend. The eyes should be level when measuring.
5.2 Optical transparency of envelope material
Due to the loss of clarity caused by the cover film, the copy made from the film inserted in the envelope will not be the same as the copy made by direct contact printing. To control the clarity, a copy of the microfilm with the No. 1 or No. 2 test pattern that meets the requirements of GB/T18405-2001 and GB/T61611994 should be made. The first copy is made by using the method of direct contact between the first-generation microfilm and the copy film, and then the first-generation microfilm is inserted into the envelope to make the second copy. The two copies are compared with the help of a microscope. The difference in clarity between the two copies should not be greater than that of the first-level test pattern or digital.
GB/T 20226. 2-2006
5= 11. 8±0. 15
c=33. 3±C, 15
d-48. 8±0. 15
e=67.3±0.13
f-- 65±0.15
g2.3±0.2
148±0.25
63.5±0.1
1. 4±0. 03
48.4±0.2
Unit is millimeter
Jiang, in the sealing attenuation with positioning holes, size: 1. 8 nlm is mandatory, size 66 mm + In envelopes without locating holes, dimension 66 tmm is mandatory. Dimension 1i, &mm are optional.
Figure 12 Envelope Dimensions
6=21.1±0. 2
C=59.2±0.2
d-58.3±0.2
=2.3±0.2
148±0.25
63.5±0.1
1.4±0.03
48.4±0.2
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GB/T 20226.2—2006
Unit is millimeter
Note: In envelopes with locating holes. Size 21.1rmm is also mandatory, size 8.3ram is optional. In envelopes without locating holes, size 58.3mm is mandatory. Size 21.1mn is optional. Figure 23 Type envelope dimensions
GB/T20226.2—2006
6-21.1=0.2
c=49.4±0.2
d=67.9±0.2
F-758=0.15
148±0.25
63.5±0.1
48.4±0.2
Unit: millimeters
e=86.4±0.2
Note: In envelopes with locating holes, dimension 21.1mm is mandatory and dimension 75.8mm is optional; in envelopes without locating holes, dimension 75.8mm is mandatory and dimension 21.1mm is cancelled. Figure 34 Envelope Dimensions
6-21.1±0.2
c-59.2±0.2
d-87.5±0.2
e-76.9±0.15
148±0.25
63.5±0.1
01.4±0.03
48.4±0.2
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Unit: millimeters
Note: In envelopes with locating holes, size 21.1mm is mandatory and size 76.9mm is optional. In envelopes without locating holes, size 76.9mm is mandatory and size 21.1mm is cancelled. Figure 45 Size of Envelope
GB/T20226.2—2006
Appendix A
(Informative Appendix)
Loading of Different Envelopes
When using an automatic film loader, the three 16mm strips of the Type 4 envelope are aligned with the four 16mm strips of the Type 2 envelope. For Type 4 and Type 5 envelopes, the films can be loaded manually by using a tool or some reader-loader. 8
References
GB/T18503—2001Microfilming technology Technical specification for alignment of A6 transparent microfilm images
Standard atmosphere for adjustment and/or testing
ISO 554:1976
1ISO5123：1984 Bibliography
Titles of single and continuous microfilms
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