SMPTE ST 205-1993 Motion-Picture Equipment (8-mm Type S) - Model 1 Camera Cartridge - Interface and Take-Up Core Drive (200-ft Capacity).pdf

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1、SMPTE 205 93 8357903 OOOL282 3b m O SMPTE STANDARD CAUTION NOTICE. This Standard may be revised or withdrawn ai any time. The procedures ofthe Standard Developer require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchas

2、ers of standards may receive current information on all standards by calling or writing the Standard Developer. Printed in USA. ANSI/SM PTE 205-1 993 Revision of ANSIISMPTE 205-1 988 for Motion-Picture Equipment (8-mm Type S) - Model 1 Camera Cartridge - Interface and Take-up Core Drive (200-Ft Capa

3、city) 1 Scope This standard specifies the dimensions of the 8-mm type S 200-fi (60-m) capacity motion-picture camera cartridge and cartridge-camera interface. Also speci- fied are the dimensions of the take-up core drive opening and critical dimensions of the take-up core as well as the driving forc

4、e, direction of drive, and recom- mended drive ratio. An optional means of retaining the film supply until the cartridge is placed in the camera is described. * 2 Dimensions 2.1 The dimensions shall be as given in the 0 figures and table 1. 2.2 The dimensions apply to an assembled cartridge with a f

5、ilm load at the time of manufac- ture. 2.3 Datum planes B, C, and A are referred to as first, second, and third, respectively. The planes, which are used for dimensioning, are mutually perpendicular and are jointly called a datum reference frame. 2.3.1 Datum plane A is coincident with the center of

6、a circle located by basic dimension T. The circle is in contact with the edges of the locating slot defined by dimensions A, O, P, and Q. The diameter of this circle is such that it applies regardless of feature size (RFS) of the locating slot (see figure 2 and annex A.l). 2.4 Datum features B, C, a

7、nd A are primary, secondary, and tertiary, respectively. Page 1 of 6 pages 2.4.1 Datum feature B is the unnotched, un- labeled surface of the cartridge, extending 2.00 in (50.8 mm) basic below and 1.635 in (41.53 mm) basic above datum plane A (cartridge sur- face between dimensions Av and Cs in figu

8、re 1). It is the primary datum feature and contacts datum plane 6 (of a gauging fixture see annex A.11) at a minimum of three points. 2.4.2 Datum feature C is the front seating surface of the cartridge, extending 2.00 in (50.8 mm) basic below and 1.635 in (41.53 mm) basic above datum plane A. It is

9、the secondary datum feature and contacts datum plane C (of a gauging fixture see annex A.11) at a minimum of two points. 2.5 Dimensions L, N, U, Am, V, M, W, and R3, measured from datum planes A and C to the depth of dimension E, describe the extent of both triangular recessed areas. The inboard wal

10、l of the recessed area, defined by dimensions L and N, shall be a smooth surface and may be tilted sufficiently from the perpendicular to datum plane B to allow proper release from a mold, when the cartridge is manufactured in a molding process. 2.6 The thickness of the wall of the cartridge used fo

11、r notching, dimension W, shall be suf- ficient .to withstand a force of at least 2.2 Ibf (10 N), while deflecting no more than 0.04 in (1.0 mm). (For purposes of measurement, the force is applied by a solid round pin of nominal 0.05-in 1.3-mm diameter, centered 0.03 in 0.8 mm nominally above or belo

12、w the film speed or filter notch coincident with basic dimension T on datum feature C.) CopyrightG 1993 by THE SOCIETY OF L American National Standard MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave, Whne Plains, NY 10607 (914)761-1100 Approved November 12. 1993 SMPTE 205 93 = 83.57403

13、0001283 2T3 ANSVSMPTE -1993 P Page 2 of 6 pages SMPTE 205 93 8357403 0002284 L3T = ANCI/CMPTE 205-1993 I il ImI E- m- - $- m- I&- i m- u T- e n I Cu Q Page 3 of 6 pages SMPTE 205 93 8357403 OOOL285 076 ANSI/SMPTE 2011993 Table 1 - Specifications Dimensions A B C E F G H J K L M N O P Q R1 R2 R3 R4 R

14、5 R6 S T U v W Y Af Am An AP Aq AS At Au Av Aw AY A2 Ba Bb Bc Bd Be Bf Inches 0.954 t 0.010 I Bg 0.162 t 0.015 2.99 t 0.01 1.390 t 0.010 0.780 max 0.090 f 0.010 0.06 t 0.01 0.88 I 0.03 0.61 t 0.03 0.015 t 0.010 0.470 min 0.007 t 0.005 0.177 min 0.154 I 0.004 0.142 t 0.004 0.770 I 0.010 0.50 t 0.10 0

15、.25 it 0.05 0.160 max 0.050 min 0.040 m ax 0.25 min 1.02 t 0.01 0.870 basic 1.225 min 0.125 max See 2.6 0.151 t 0.012 1.608 basic 1.835 min 2.340 min 1 .O32 max 0.733 t 0.008 1.710 * 0.012 1.730 min 1.890 min 2.000 f 0.010 1“ - 5“ 30“ 0.620 min 0.502 min 0.040 I 0.008 0.319 I 0.008 1.152 min 0.660 m

16、ax 0.533 m ax 45“ nom Millimeters 24.23 t 0.25 75.9 0.3 35.31 t 0.25 19.81 m ax 2.29 I 0.25 1.5 t 0.3 22.4 t 0.8 15.5 t 0.8 0.38 t 0.25 11.94 min 0.18 t 0.13 4.50 min 3.91 f 0.10 3.61 t 0.10 19.56 t 0.25 12.7 f 2.5 6.4 t 1.3 4.06 m ax 1.27 min 1 .o2 max 6.4 min 25.9 t 0.03 22.1 o basic 31.12 min 3.1

17、8 m ax 3.84 f 0.30 40.84 basic 46.61 min 59.44 min 26.21 m ax 18.62 0.20 43.43 0.30 43.94 min 48.01 min 50.80 t 0.25 1“ - 5“ 30“ + 15.75 min 12.75 min 1.02 f 0.20 8.10 2 0.20 29.26 min 16.76 max 13.54 m ax 45 O nom 4.11 t 0.38 O Page 4 of 6 pages ANSI/SMPTE 205-1 993 Table 1 (concluded) Dimensions B

18、h Bk BI Bm Bn BP Bq Bs Bt Bu Bv Bw BY BZ Ca Cb cc Cd Ce Cf cg Ch Ci Ck CI Cm Cn CP cq Cr cs Ct Cu cv cw cx cz Da Db Dc Dd De Df D!J Bi CY Inches Millimeters I 0.347 min 8.81 min 0.502 0.840 0.260 0.093 1.550 1.280 1.888 0.658 0.787 min min m ax max max min min m ax f 0.015 0.200 min 45“ f 5“ 0.151 I

19、 0.012 15“ f 2“ 15“ i 2“ 0.690 max 0.555 min 0.500 min 0.264 max 0.020 max 0.040 0.015 45“ nom 0.090 t 0.050 0.080 i 0.010 0.065 0.015 1 .O74 0.310 45“ 1.692 1.985 O. 185 1.655 0.165 15“ 13“ 25“ 0.100 0.31 O 6.500 3.275 0.094 1.246 1.300 5.237 15“ 0.21 5 max max nom i 0.015 t 0.030 f 0.020 * 0.020 i

20、 5“ t 5“ t 5“ f 0.020 m ax min dia max m ax f 0.020 basic 0.015 basic f 2“ 0.008 12.75 21.34 6.60 2.36 39.37 32.51 47.96 16.71 19.99 5.08 45“ 3.84 15“ 15“ 7.53 4.10 2.70 6.71 0.51 1 .o2 45“ 2.29 2.03 1.65 27.28 7.87 45“ 42.98 50.42 4.70 42.04 4.19 15“ 13“ 25“ 2.54 7.87 165.10 83.18 2.39 31.65 33.02

21、133.02 15“ 5.46 min min max max max min min max min 2 0.38 I 5“ i 0.30 I 2“ i 2“ max min min max max nom * 0.38 I 1.27 t 0.25 t 0.38 max max nom I 0.38 f 0.76 max I 0.51 5 0.51 f 5“ f 5“ I 5“ i: 0.51 min dia max max t 0.51 basic basic I 0.38 i 2“ I 0.20 Page 5 of 6 pages SMPTE 20s 93 m a357403 0001,

22、287 949 m ANSI/SMPTE 205-1 993 2.7 Dimension A specifies the normal overall thickness of the cartridge, extending from the bottom edge of the cartridge to the light lock rib clockwise when viewed from the core side of the (dimension Dg). cartridge. 2.8 Some cartridge manufacturers may desire to prov

23、ide a means of retaining the film supply and 3.2 After disengagement of any film-locking take-up spools until the cartridge is placed in the device, the cartridge shall operate with a nomi- camera. One method employs a spool locking nal torque of 1.3 ozfain (9.2 x N.m) with device which is activated

24、 by a lock pin extending a permissible range of 1 .O ozf.in to 1.5 ozfain through datum feature B. The device should be (7.1 x N.m to 10.6 x N.m (see annex designed to unlock the spools when the lock pin A.2). is depressed by seating the cartridge on datum 3 Take-up core drive (dimension u) and the

25、light lock channel 3.1 The direction Of rotation for the Core shall be plane B (camera mechanism plate). The lock pin should be located within a zone from 0.50 in (12.7 mm) basic from datum plane A within dimension B. The force required to hold the lock pin coincident with datum plane B shall not ex

26、ceed 20 oz (5.4 N). The initial force to depress the lock pin may be significantly higher than the force required to hold the lock pin coincident with datum plane B. To enable cameras to distinguish automatically between the 8-mm type S 200-ft (60-m) capacity cartridge and the 50-ft (1 5-m) capacity

27、 sound and silent cartridge, a spring-loaded drive plate is incorpo- rated in the core drive of the 8-mm type S 200-fi (60-m) capacity cartridge. The spring-loaded drive plate will react axially against the core drive mechanism of the camera with a nominal force of 14 oz (3.9 N) with a permissible r

28、ange of 10 oz to 18 oz (2.8 N to 5.0 N) when the spring-loaded drive plate is depressed to within 0.020 in (0.51 mm) from datum plane B. (Four driving lugs are shown in the core, and it is recom- mended that the camera core driver be designed in such a way as to present a plane surface for the four

29、lugs to bear against.) 3.3 When operating the 200-fi (60-m) capacity cartridge loaded with film without a magnetic sound stripe, proper film transport requires that all camera film transport mechanisms, including those for recording should, be activated. (This may not be required when using the 8-rn

30、m type S 50-ft (1 5-m) capacity silent cartridge.) 2-9 DifnenSiOn M is tneasured from datum Plane C. 2.10 The sprocket axis shall be located within 0.010 in (0.25 mm) of the true center formed by datum plane A and basic dimension Af. 2.11 Dimensions Ca, Cb, Cc, Cd, and Cm are diameters. 2.12 Dimensi

31、ons Bt, Bu, and Bv define an op- tional guide provided to facilitate film loading at the time of cartridge manufacture. Annex A (informative) Additional data A.l To provide a consistent method of measurement, it is recommended that a cartridge gauging fixture be used which incorporates datum surface

32、s, a locating pin, and means of exerting locating forces on appropriate surfaces of the cartridge. A.2 It is recommended that the core be tendency driven (by some form of slip-drive mechanism) with a drive ratio of at least one turn of the core driver for every 14 strokes of the pulldown claw when no slippage occurs. A.3 In designing the core driver, consideration should be given to the fact that tooth-on-tooth engagement of the core lug on the driver pin is a possibility. Page 6 of 6 pages