1、/ - L-F-315C (GSA-FSB) INT. AMENDMENT - 1 October 28, 1975 i INTERIM AMENDMENT To FEDERAL SPECIFICATION FILM, DIAZOTYPE, SENSITIZED (DIRECT IMAGE MICROFORMS) This interim amendment was developed by the General Serviees Admin- istration, Federal Supply Service, Washington, W: 20406, based upon curren
2、tly available technical information. It is recommended that Federal agencies use it in procurement and forward recommendations for changes to the preparing activity at the address shown above. The General Services Administration has authorized the use of this interim amendment as a valid exception t
3、o Federal Specifieation L-F-315C (GSA-FSS), dated November 15, 1971. PAGE 6 Table II, add: M. Dynamic tested film. This film shall be designed to eliminate nonmechanical hardware produced double imaging or resolution loss when dynamic tested in accordance with 4.3.15. Any size film designated as dyn
4、amic tested film shall be of the same materiaLcoating, application, and characteristics (excluding size dimensions) as the film submitted for the dynamic test (see 4.3.15 and 6.2). PAGE 14 Add the following: 4.3.15 Dynamic tested film. 4.3.15.1 Material requirements. A. Duplicator. The duplicator us
5、ed for the following test shall be a Scott Graphic microcopier model 705, Extek Microcystems microcopier model XD-1, or equal. B. The silver test masters shall be positive appearing with a base plus 0.08 density units. acetate 4 to 7 mils thick. U.S.A.F. resolution targets of at least 228 lines per
6、millimeter shall be imaged on the silver master with a minimum of four (4) targets per foot. a minimum length of 30 feet. of 105 mm film to obtain a minimum of 100 test targets from each roll of film. The diazo film shall be classified in accordance with table I and shall meet all applicable require
7、ments of this specification. used for the target reading. Silver test masters. The film base may be either polyester or The master width shall be 4.50 inches 5 0.50 inch having C. Diaz0 film to be tested. Enough film shall be exposed of two (2) separate rolls D. Microscope. An 80 to 120x power micro
8、scope of professional quality shall be ,- I .* / -. THIS DOCUMENT CONTAINS &!. PAGES FSC 6750 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- L-F-315C INT AND L 67 = 999977Ll O032422 3 L-B-315C (GCA-FCS ) ant. Amendment-1 the duplicator should be se
9、t to obtain the optimum of copying. The best speed obtainable, not less than 40 fpm, shall be used throughout the test. The silver master shall be used to reproduce targets onto a minimum of 30 feet of the diazo film to be tested. The reproduced targets shall be closely observed and evaluated under
10、a microscope. One hundred percent (100%) of all targets read shall have no image degradation less than 114 lines per millimeter or double image targets. Fifty percent (50%) of all targets read shall have no image degradation less than 182 lines per millimeter or double image targets. The samples fro
11、m each roll of diazo ilm shall be evaluated separately. Sample film that does not meet the above requirement shall not be classified as dynamic tested film. 4.3.15.2 Dynamic test. Using the microscope, determine at what printing speed PAGE 17 Paragraph 6.2 , add : K. Dynamic tested film so state (see TABLE II, paragraph M.) . 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
