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 Posted: Thu 6:34, 23 Dec 2010 Post subject: ed hardy clothing Preservation on microfilm explan |
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Preservation on microfilm explanation
Acetate can not be distributed in a closed container (a savings of acetic acid as catalyst.) A 48-2) high humidity (water for reaction.) 3) and iron content (tinplate sheet box) contact (iron for reaction). 5 to prevent the rapid deterioration of the storage method of the film and monitoring test for the rapid deterioration ① prevent the preservation of elements of the film See Table 2. Recommended storage conditions: use of international standards is being revised (ISO5446), relative humidity of 20 to 30%. It should be noted, the Japanese Industrial Standard (Z6009) on the preservation of film materials, detailed provisions. Table 2 to prevent the rapid deterioration of the preserved elements of the film - Save Star Degree: 20 ~ 30% (relative humidity) I ・ Storage Temperature: 2L ℃ l-ventilation of the following: a longer storage time on the film, Paul l ventilation tube should be used. l-check: check about once every two years (including visual, odor, and packages l packing materials). Such as unusual, in addition to isolation and acid treatment (release l acetic acid), well corresponding increase in the number of inspections and sampling number. l ② low humidity for long-term preservation method, see Table 3. In short, we must pay great attention to environmental conditions (temperature, humidity, air conditioning) management. Management of saving cabinet see Table 4. Table 3 to achieve long-term preservation needs of the low humidity means relative to the custody of Table 4 save points, save for non-mechanical closed-type cabinet, use silica gel for drying Jing carefully managed. Save a pair of mechanical sealed cabinet. Can use the humidity regulator and activated carbon. Regulatory function that has kept resisting humidity. - Deterioration of the film will be isolated,[link widoczny dla zalogowanych], effectively prevent the spread of deterioration. This is being sold on the market with Built-in dehumidifier cabinet microfilm preservation technology institutions 4 / 1995, the exchange of experience ③ Check Method 1) periodic inspection recommended triacetate film about 25 years with the release of acetic acid after treatment. (Polyester film release without the need for treatment). 2) Check whether the program first smell the odor, (or check the PH value) and then, slowly rewind, visual check for abnormalities. 6 measures the time of the film ① abnormal smell stinky ignorant as ignorant foul smell when the acetate film,[link widoczny dla zalogowanych], finds PH value decreased, open cabinets, doors and windows of the day the Treasury to release acetic acid. In order to obtain better results can be again through the film developing machine, the washing and drying. Film storage box on the film, the (Continued from page 40) A. 3 measurements should be in the negative frame in the literature as the most dark image areas or in the frame just as the brightest in the Department of measuring density, and each frame to be measured at least three readings are averaged to be recorded. Appendix B (normative) Determination of force resolution for Article 6 of the test target by the exposure, the reflectivity of 50% gray card density should be controlled at between 1.0-12. On the frame 5 on the resolution test chart, respectively, through microscopic examination. No use of ISO1 test chart (see isQ446), the microscope magnification should be between 30 and 50. No test pattern using ISO2 (see ISO3334), the microscope magnification map for the test should be resolved on the number of lines per mm 1 / 3 to 1 times. For example: To see the 150 line pairs per mm, microscope magnification should be between 50 to 150. Appendix c (normative) density control when the exposure and washing conditions can close 50% reflective gray card to avoid the use of cardboard boxes with the exception of normal film film held separately. {Points to pay attention to storage conditions (see Table 2) ② serious deterioration of film deterioration lemma under the order, and then copying custody 7. Partition storage for different film (silver film, diazo film and micro-bubble film, etc.), in principle, be held separately. Proposed triacetate film produced by age,[link widoczny dla zalogowanych], 10 years as a unit, centrally located, held separately. (Fuji Photo Film Co., Ltd. offers) c SU Xiao deer translated from the Journal 'image and information management) 3 1994 West Chan,[link widoczny dla zalogowanych], l is controlled at the school 10 to 12 range, the standard on-board black block (6% reflectance gray board) area density of the minimum density representative of the film (which is not to exceed 020). When this contact microfilm copy, 50% reflectance gray board area that copy negative or positive background density chip pan, 6% reflectance gray area,[link widoczny dla zalogowanych], said plate negative or positive image of the microfilm line density. Appendix D (normative) the volume slices in the form of microfilm images in quality control in the working day of the test target should be shot. Under the following conditions should also take the test target: a) on the camera or photographic film developing machine maintenance and repair of one machine after: b) washing the film changes the chemical composition: c) washing conditions change; d) the film emulsion after the change; e) lighting changes or camera failure: f) any adverse system operating conditions occurs. - (Translated by Lee Ming-Qing Yan built more - 49 ~
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