This standard is modified to adopt ISO 6200:1999, which specifies the test method for the diffuse transmission visual density of microforms. According to the quality of the source documents being photographed and the production requirements of the microforms, this standard lists the control range of the image density values ​​of the first generation silver-gelatin microforms of the source documents. This standard applies to the negative image microforms of the source documents. GB/T 6160-2003 Microphotographic technology Source document first generation silver-gelatin microform density specification and measurement method GB/T6160-2003 Standard download decompression password: www.bzxz.net
This standard is modified to adopt ISO 6200:1999, which specifies the test method for the diffuse transmission visual density of microforms. According to the quality of the source documents being photographed and the production requirements of the microforms, this standard lists the control range of the image density values ​​of the first generation silver-gelatin microforms of the source documents. This standard applies to the negative image microforms of the source documents.

ICS 37.050
National Standard of the People's Republic of China
GB/T 6160-—2003
Generation GF/TG60—1995
Micrographics-
First generatlon silver-gefatin micruforms of sourve douuments-Density specifications and methd of measnreent (ISO6200:1999, M0D)
2003-05-14 Issued
Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
2003-12-01 Implementation
GI/T6160—2003
This standard adopts the ISCS 20019994 microfilm technology source file of the first generation of silver one glue type moving product specification and the English version of the wood standard 1506200 Compared with ISO 153, this standard has the following technical differences: This standard changes the "background density given in Table F is equivalent to the density of the base plus the gray fog" in ISO 52001999 to "the density including the base plus the gray fog"; this standard changes the original note in Table 1 of ISO 1506200:1999 to a footnote. This standard has the following shortened revisions: This standard divides ISO 1506200:1999 Section 5 into 5.1, 3.2 and 5.3, 5.2 into 5.2.1 and 5.2.2, and 5.2.2 further into 5.2.2. and 3.2.2. 21 This standard is based on the notes in Table 1 of ISC 6237:1399 moved to 5.2.2.2 of this standard. Compared with GH611, this standard has the following changes:
- The density of the film base plus double fog of non-negative film base products shall not exceed 16\ and is changed to "should not exceed 3.10"; the file category 1:1 group in Table 1 is adjusted to 1.
This standard was proposed by the National Imaging Technology Standardization Technical Committee (H1%/1C). This standard was drafted by the National Imaging Technology Standardization Technical Committee. The main authors of this standard are Xiao Zuoti, Zhong Jingrong, Liu Dingjun, Yu Lianyang, and Liu Peiping. This standard was first issued in January 183, and was accepted for the first time in November 1995. This revision is the second revision. T
GB/T 616D—2003
The quality of microforms is guaranteed, the information contained is limited to printing and reading, and it is suitable for use. The quality of the microform source files meets the requirements for making microforms. This is very cost-effective:
Controlling the output of microform images helps to ensure high-quality results: 1 Specification for microfilm
Micrographic technology
Source file First generation silver-gelatin microform density specification and measurement method
CB/T6160—2003
This standard specifies the method for measuring the density of microforms through diffuse transmission. According to the quality inspection and production requirements of the source documents to be used, this standard lists the control range of the image rate value of the source documents of the first generation of silver-coated micro-reduction products. This standard applies to the negative image system micro-products of the source documents under the application of this standard. This standard is not applicable to the technical drawing micro-products involved in HGB/T8989-1, nor is it applicable to the heavy cavity micro-bubble liquid film box micro-products involved in 6H/113984-1 and BT17204-1998 (0M micro-products, 2 Normative references
The clauses in the following documents become the clauses of this standard before the application of this standard. For all referenced documents with a certification date, all subsequent amendments (excluding those mentioned in the salt) or Revisions do not apply to this standard. However, the parties who have reached an agreement on the standard are encouraged to use the latest version of this document. For referenced documents without previous references, the latest version applies. GH/76159.1-2003 Microphotography Technical Specifications: Part 106.9311193, MOD) G/T (R.53.4-2(007 Addendum: Part 4, Materials and Materials (IS (5196-4: 1S98.MO1)) (IS (5196-4: 1S98.MO1)) (IS (5196-4: 1S98.MO1)) (IS (5196-1 ... 61665::037)
GB/6_59.623 Microphotography - Part 6: Preparation (1S0) 6196.6:1992.M>) Photographic density measurement - Part 1, Techniques, symbols, coordinate system and exposure number representation IS 5-1:1984
Measurement of the degree of transmission density Part 2, Geometric conditions for transmission density 1505-21991
1505H, 1!15 Measurement of the degree of transmission density Part 3: Optical conditions 3 Terms and definitions
G3/6.5.12C63.GB/T615.200,G3T615!5—2000G3/159.6-)031S5-1:1984 establishes the terms and definitions that shall apply to this standard. 4 The measurement method
The meter shall comply with S()1-2::99! and 1) =-2:1995 drug requirements, the appropriate diffuse viewing zone should have 0.mm~.5mm sampling hole control
Each measurement should have a seat, almost completely cover the density sampling hole, for this reason, in the production of the first generation of microscope center, can provide: a standard area for density measurement, when measuring density, the film emulsion side should be facing the densitometer head: when there is no sample image on the back of the sample, if the density is small and the background of the image is uniform, it is recommended to abandon the uneven density area in the image and carry out multi-point sampling.
5 Density specification
5.1 General
All specified density information is standard diffuse visual density, GB/T 6160-- 2003
5.2 Window quality of non-colored micro-film products
5.2.1 The density of the film base plus gray
The density of non-scientific film reduction products should not be higher than 10.5.2.2 Background density
5.2.2. The background density of the reduction film shall not exceed the requirements of Table 1, which includes the density of the image. For documents containing fine lines or with mixed characters, the density of the background image of the microfilm should be within the value specified in the table, but the lower limit is 0.70.
5.2.2.2 The density difference of the image background in the same plate (sheet) should be as small as possible. When shooting a group of high-quality documents with inner edges, the density of the background image of the microfilm should be kept within the range of 1.0. When the quality of the original is different, the density of the background image of the microfilm should be kept within the range of 1.0.0. When the quality of the original is different, the density of the background image of the microfilm should be kept within the range of 1.0.0.0. 5.3 The density of the microfilm of the base is relatively large and often higher than 0.10. In some cases, the specific density should be controlled according to the specific recommended values ​​of the film manufacturer: Table 1 The ten main characteristics of the document are as follows: the shape of the document is complete, the symbol and the image are effective in reflecting the total high-level development of the document, or the expression line should be taught or it has medium sensitivity and poor female material effective in reflecting the long-term heart of the document. The document should use -12 or higher rate pressure, 1. 00 ~. 50
(6. 90 ~1. 10
<. 63 ~1. 00*bZxz.net
G, 0~1, 65
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