ANSI AIIM-MS17-2001 pdf download Micrographics – Rotary (Flow) Microfilm Camera Test Chart and Test Target – Descriptions and Use
3.10 Longitudinal lines: Defects in a film image that appear parallel to the film edges.
NOTE: May be caused by problems in film exposure, handling, or processing.
3.11 Loss line: A blurring of a small section of a ladder pattern.
3.12 truly reproduced in the film image, ¡.e., square corners do not appear as right angles on the film. Optical skew: A condition in rotary microfilm equipment in which angles on the target are not 3.13 Reduction: (1 ) Quotient of a linear dimension of an object and the corresponding linear dimension of the image of the same object expressed as the number of times a given linear dimension is reduced. (2) Copy smaller than the original; or, its size being expressed as the number of times a given linear dimension is reduced.
3.14 Rotary Camera: Camera used for rotary filming.
3.15 film are synchronized during exposure. Rotary filming: Method of microfilming in which the movements of the document and the
3.16 camera are synchronized. Synchronize: To take place at the same time, e.g., the film and documents in a rotary
3.17 Target: (1 ) Any document or chart containing identification information, coding, or test charts. (2) Aid to technical or bibliographic control that is photographed on the film preceding or following the document.
3.18 designed for test and evaluation of imaging systems. Test chart: Image, comprised of different (or a number of the same) test targets, that is
3.19 Test element: Image designed for test and evaluation of imaging systems, e.g., a specific line of type that is set in a particular point size, a specific collection of horizontal and vertical lines and spaces, a line that represents a specific frequency, ¡.e., 50 cycle/mm and 1 52.4 mm (6.0 inch) length. 3.20 elements, frequency test elements, that is designed for test and evaluation of imaging systems. Test pattern: Image, comprised of a collection of test elements, e.g., resolution test 3.21 Test target: (1 ) Image comprised of test patterns and/or test elements designed for test and evaluation of imaging systems. (2) High-quality form slide used to evaluate computer-output microfilmer quality. See also Test chart,
3.18; test element,
3.19; and test pattern,
3.20.
3.22 Transverse lines (ripples, variations): Defects in a film image that appear as bands of lighter or darker areas perpendicular to the film edges. Such defects in a rotary camera film image are frequently traceable to voltage fluctuations or mechanical problems that result in lighting variations or lack of synchronization. See examples in ANSVAIIM MS23.
4 Content of the test chart
4.1 General Several aspects of the test chart are described in this section, including an explanation and specifications for use. A photograph of the test chart is also included.