AIIM 10198-1994 Micrographics Rotary camera for 16mm microfilm Mechanical and optical characteristics《显微照相 16mm缩微胶片轮转式摄影机 机械与光学特性》.pdf

《AIIM 10198-1994 Micrographics Rotary camera for 16mm microfilm Mechanical and optical characteristics《显微照相 16mm缩微胶片轮转式摄影机 机械与光学特性》.pdf》由会员分享，可在线阅读，更多相关《AIIM 10198-1994 Micrographics Rotary camera for 16mm microfilm Mechanical and optical characteristics《显微照相 16mm缩微胶片轮转式摄影机 机械与光学特性》.pdf（10页珍藏版）》请在麦多课文档分享上搜索。

1、Micrographics Rotary camerafor 16mmmicrofilm Mechanicaland opticalcharacteristics1100 Wayne Avenue, Suite 1100Silver Spring, Maryland 20910 USATel: 301-587-8202www.aiim.orgA Publication ofANSI/AIIM/ISO 10198-1994ANSI/AIIM/ISO 10198-1994G115G116G97G110G100G97G114G100G115G116G97G110G100G97G114G100G65G

2、112G112G114G111G118G101G100G32G97G115G68G101G99G101G109G98G101G114G32G49G52G44G32G49G57G57G57G65G109G101G114G105G99G97G110G32G32G78G97G116G105G111G110G97G108G83G116G97G110G100G97G114G100G115G32G73G110G115G116G105G116G117G116G101G32G40G65G78G83G73G41G83G116G97G110G100G97G114G100G115INTERNATIONAL STAN

3、DARD IS0 10198 First edition 1994-01-l 5 Micrographics - Rotary camera for 16 mm microfilm - Mechanical and optical characteristics Micrographic - Cam dual film (magazines); removable camera heads; an exposure signal, indicating shutter opening and/or film transport operation; an automatic document

4、counter/recorder capable of being reset to zero; indicators for lamp failure; information coding devices imprinters, cancelling devices, date and time stamps, film image marks (blips), frame numbering devices, etc.; devices for indicating the length of film available and the film movement; advance w

5、arning before running out of film; method to prevent or detect the simultaneous entry of more than one document at a time; automatic stop upon machine malfunction. 5.8 Document delivery tray The documents, once microfilmed, should be deliv- ered in their original order. The delivery tray shall be vi

6、sible and easily accessible to the operator. 5.7 Noise emission The noise emitted by the camera, measured in ac- cordance with IS0 7779, shall not exceed 70 dB(A) during normal operation. Impulse noise of equipment shall not exceed 75 dB. 2 5.8 Temperature The temperature of camera surfaces shall no

7、t exceed the values given in table 1 after the camera has been operated in an area with an ambient temperature of 23 “C f 2 “C for 1 h. 6 Optical characteristics 6.1 Exposure g) The camera shall be light tight to prevent film fog during extended periods of nonoperation. Lighting, lenses, and mirrors

8、 shall be adjusted so that when a full-size sheet of paper with uniform NOTE 1 If a roll is partially exposed, completed later and reflectance is filmed, the image density shall meet the then processed, latent image fade could cause density variations larger than 0,2 from one end of the roll to the

9、following requirements: other. a) When measured in accordance with IS0 5-2 and IS0 5-3, the background density of a sheet of white paper with 80 % reflectance shall be within the range 0,8 to 1,5 density units, this provides enough exposure latitude for (coloured) docu- ments with a reflectance dens

10、ity as low as 50 %. b) When measured in accordance with IS0 5-2 and IS0 5-3, the difference in background density be- tween any two points on the document shall be no greater than 0,3 density units. c) When recording the same type of document the background density from image to image from start of

11、roll to end of roll shall not vary by more than 0,3 density units when measured in a non- information area on the centreline in the direction of travel of the document image. This also applies to images in the duplex format. d) If both front and back of the documents are filmed then the background d

12、ensity shall not vary by more than 0,3 from front to back provided they are the same colour. IS0 10198:1994(E) e) When automatic exposure control is available and used, it shall respond in such a manner as to minimize underexposure of the leading and trailing edges of the document. f) A shutter shal

13、l be provided to protect the film from unwanted exposure when no document is being filmed. 6.2 Image quality A maximum variation of four test chart groups of characters of IS0 test chart No. 1 or test chart pat- terns of IS0 test chart No. 2 is allowed either within one document image or between any

14、 two images. 7 Alternative components If alternative components are available, e.g. camera heads, document feeders, etc., the user should not need tools to change or remove them. 8 Climatic conditions The camera shall be capable of normal operation at temperatures within the range 15 “C to 32 “C and

15、 relative humidity within the range 20 % to 75 %. Table 1 - Camera part temperature Camera part Temperature All controls, areas in front of camera, surfaces near the con- trols, any part used in film loading, handling or positioning or normally touched during operation of the camera 35 “C Areas at t

16、he bottom of the camera and other exterior parts not included in the above 55 “C Internal parts which may be touched or handled in routine maintenance, lighting device changing and cleaning etc. - if labelled with warning (e.g. “CAUTION - HOT”) No limit specified - not labelled 60 “C - lighting devi

17、ces and lamps I Warning required (no temperature limit) 3 IS0 10198:1994(E) 9 Electrical supply The camera shall meet the voltage and frequency specifications of the country where it will be used. If power supply voltage has a wide variation, a constant voltage device can be required. Such a device

18、is usu- ally subject to the camera manufacturers approval. IO Electrical safety The camera shall meet the requirements of IEC 950 for electrical safety. 11 Controls All operator controls shall be easy to access and op- erate. 12 Markings The information below shall be legibly displayed on the camera

19、 in a durable manner: a) manufacturers or suppliers name or trademark; b) model or type of camera; cl d) e) f) 9) h) serial number; nominal voltage, wattage and frequency of the electricity supply in hertz; controls marked in the language acceptable to the country in which the camera will be sold or

20、 in symbols specified in IEC 417; reduction ratio; lamp identification specifications shall be in the area of the lamp housings; fuse specifications shall be adjacent to the fuse holder. 13 Operator manual The camera shall be delivered with a manual contain- ing operation and maintenance instruction

21、s written in a language acceptable to the country in which the camera will be used. A list of commonly required re- placement parts that includes identification numbers, if used, shall accompany or be part of the operator manual. IS0 10198:1994(E) Annex A (informative) Approximate sizes The figures

22、and tables in this annex give the approxi- mate frame or page size which can be microfilmed in the various formats (simplex, duo or duplex) with no edge coding or with single- or double-edge coding at various reduction ratios. Dimensions in millimetres Figure A.1 - Simplex formats Table A.1 - Dimens

23、ions for maximum document length or width (simplex) Dimensions in millimetres Reduction ratio) No edge coding Single-edge coding Double-edge coding l/20 299 266 233 l/24 358 319 279 l/30 448 398 349 l/36 538 478 418 l/42 627 558 488 l/48 716 638 558 l/50 747 664 581 1) Reduction ratio selected is ba

24、sed on the size of the document, desired quality level, and the available image area. If some other reduction ratio is used, the maximum sheet width permitted can be deduced from the table. These are maxi- mum dimensions based on reduction ratio only. The camera field width may be narrower and some

25、allowance should be made for skew. 5 IS0 10198:1994(E) Dimensions in millimetres l/20 I /24 l/30 l/36 l/42 l/48 l/50 Figure A.2 - Duplex format and duo format Table A.2 - Dimensions for maximum document length or width (duplex or duo) Dimensions in millimetres I I 1) Reduction ratio selected is base

26、d on the size of the document, desired quality level, and the available image area. If some other reduction ratio is used, the maximum sheet width permitted can be interpreted from the table These are maximum dimensions based on reduction ratio only. The camera field width may be narrower and some allowance should be made for skew. 6 IS0 10198:1994(EI ICS 37.080.00 Descriptors: micrographics, microfilm, micrographic equipment, cameras, specifications, mechanical properties, optical properties, marking. Price based on 6 oases