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Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

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“Step Out From the Old to the New”

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“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 11577 (1985): Dimensions for projectable reels for 8 mmtype S motion picture film for use with projectioncassettes [MED 32: Photographic Equipment]

IS:11577 -1985

Indian Stand&d DIMENSIONS FOR

PROJECTION REELS FOR 8 mm TYPE S MOTION-PICTURE FILM FOR USE WITH

PROJECTION CASSETTES

Cinematographic Equipment Sectional Committee, ETDC 47

Members

SHRI S. N. A~ARWAL

Chairman

SHRI B. A. MISTRY 15, Parsee Panchayet Road

Ministry Apartments, Bombay

Representing

Cinecita Pvt Ltd, Bombay SHRI S, P. AGARWAL ( Alternate )

SHRI R. S. ARORA Directorate General of Supplies & Disposals, New Delhi

SHRI D. L. TALURAR ( Alternate ) SHRI S. C. BATRA Directorate of Technical Development and Produc-

tion ( Air ), Ministry of Defence, New Delhi SRRI R. P. AGARWAL ( Alternate )

SHRI N. P. BHATTACHARYA Department of Teaching Aids, National Council of Educational Research and Training, New Delhi

SHRI BHUPAN GHOSH Cine Mechanical Works, Calcutta SHRI MANNA LADIA ( Alternate )

SHRI Y. R. CHAUHAN Cine Sales Corporation, Delhi SHRI R. S. CHAUHAN ( Alternate )

SHRI B. P. GHOSR National Test House, Calcutta SHRI B. C. MUK~ERJEE ( Alternate )

SHRI M. C. MANI Photoohone Pvt Ltd. Bombay SHRI A. B. KUCHERIA ( Alternate )

SHRI JAL P. MISTRY International Talkie Equipment Co Pvt Ltd. Bombay

SHRI DIPAK B. ADALJA ( Alternate ) SHRI N. NARAYANA RAO Ministry of Defence ( DGI )

SHRI D. R. DHIMAN ( Alternate ) SHRI K. RAJCOPAL CHETTY Devi Cine Projector Manufacturing Co, Madras

SRRI K. N. GNENAPRAOASAM ( Altcrnatc )

( Continued on page 2 )

@ Cofirigh: 1986

INDIAN STANDARDS INSTITUTION

This publication is protected under the In&n Copyright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the uublisher shall be deemed to be an infrinaement of copyright under the said Act.

IS : 11577 - 1985

( Continued from page 1 )

Members SHRI K. N. RA~V~ASWAMY

Representing

Directorate General of Technical Development, New Delhi

SEIRI BALRAJ BHANOT ( Alternate ) SHRI RAM PRASAD National Physical Laboratory ( Optics Division )

( CSIR ), New Delhi SHRI SATISH KUMAR Film and Television Institute of India, Pune

SHRI P. V. K. REDDY ( Alternate ) DR S. P. SIN~HAL National Physical Laboratory ( Acoustics Division )

( CSIR ), New Delhi SHRI G. SINHA Hindustan Photo Films Manufacturing Co,

Ootacamund SHRI A. R. MURALI ( Alternate )

SHRI S. S. VOHRA Films Division ( Ministry of Information & Broad- casting ), Bombay

SHRI S. P. SACHDEV, Director General, IS1 ( Ex-ojicio Member ) Director ( Elec tech )

Secretary SHRI B. K. MAHATA

Joint Director ( Elec tech ), IS1

IS : 11577 - 1985

Indian Standard DIMENSIONS FOR

PROJECTION REELS FOR 8 mm TYPE S MOTION-PICTURE FILM FOR USE WITH

PROJECTION CASSETTES

0. FOREWORD

0.1 This Indian Standard was adopted by the Indian Standards Institution on 28 October 1985, after the draft finalized by the Cinemato- graphic Equipment Sectional Committee had been approved by the Electrotechnical Division Council.

0.2 This standard covers the dimensions for 8 mm Type S motion- picture projection reels designed for use in the projection cassettes.

0.3 In preparing this standard assistance has been derived from ISO/DIS 6027-1980 ‘Cinematography - Projection reels for 8 mm Type S motion-picture film for use with projection cassettes - Dimensions and specifications’, issued by the International Organization for Standardi- zation.

0.4 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test, shall be rounded off in accordance with IS : 2-1960”. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

1. SCOPE

1.1 This standard specifies the dimensions for 8 mm Type S motion- picture projection reels designed for use in the projection cassettes, which are used with compatibly designed 8 mm Type S motion-picture projectors.

1.2 This standard covers two models of reels of size number 15 of nominal capacity and size number 19 of 120 m nominal capacity.

*Rules for rounding off numerical values ( rruised ).

3

67 m

IS : 11577 - 1985

2. DIMENSIONS AND CHARACTERISTICS

2.1 The dimensions shall be as shown in Fig. 1 and 2 and given in Tables 1 and 2.

2.2 Dimension H applies from the surface of the hub to the periphery of the flanges.

23 The dimension K represents the diameter of the central portion of the reel centred on the spindle-hole axis, over which the effective central thickness 3 of the reel is intended to apply.

2.4 The maximum volume of rotation is measured~with a tight fitting test spindle which fits on the X diameter ( solid flange side ) by means of a shoulder 19’0 mm in diameter. The reference plane of rotation for both flanges is a plane perpendicular to detum cylinder A.

2.5 The concentricity of the spindle hole C and the hub E is determined as a run-out specification by dimension U. A similar allowance is provided for the concentricity of the spindle hole and the flanges in the maximum volume of rotation diagram ( Fig. ~2 ) by having dimension V exceed dimension M maximum by 0’80 mm.

2.6 Reels made according to this Standard shall also be provided with a means of securing the full-width end of the film to the reel. This may be accomplished by a slot in the reel hub and a minimum cut-out area.

2.7 The flanges of the reel should have three radial driving slots placed at approximately 120” and conforming to dimensions D and B. The drive slots of both flanges are aligned. If properly aligned, the reel will fit on a test spindle Y of 12.7 mm diameter with a radial spindle drive key having an axial length from the spindle shoulder greater than the width 3 of the reel; a thickness of 1’47 mm and a height, measured as a radius from the spindle axis, of 9.1 mm.

2.8 Some visible means of identifying the diameter of the wound film shall be provided on one or both flanges. If opaque materials are used for the flanges and a hole is necessary for such identification, the hole shall not be large enough to allow film to protrude through it.

4

lS:11577-1985

SECTtON Zt

DIMENSION

A, Max

B, Min

c

D, Min

H 7.42 +0’15 -0

R, Max 0.50 E=F 0.20 3=x For reference only

mm

2'95 lo.05 7.98

13.00

FIG. 1 REEL DIMENSIONS

IS : 11577 - 1985

FIG. 2 MAXIMUM VOLUME OF ROTATION

TABLE 1 STANDARD REEL SIZES

( Clauses 2.1 and 3.1 )

REEL SIZE NOMINAL NUYBER REEL

CAPACITY m

15

19

DIMENSION MASIMUM MINIMUM

(3)

6” Film diameter

Y Film diameter

mm

(4)

156.20 157.00 142.20

193.65 19440 179.60

mm

(5)

155.70

94-00

192.90

12T50

6

IS: 11577 -1985

TABLE 2 DIMENSIONS OF RBELS

( Clauses 2.1 and 3.1 )

DIMENSION

(1)

B C D E H

3 K PI P% PS p4 P6 P6 &

RS s u

MAXIXVM mm

69

1’80

13.00

20*90

63.50

9.40

11.45

21’60

0.40

1.40 -

11’30

9.40 -

Maximum is l/2 the value of B

do

64.25

0.80

MINIMUM mm

(3)

1’50

12.75

20.40

62.75

8.15

lb70 - - -

9.50 -

1.50

Maximum is l/2 the value of B

do

-

INTERNATIONAL SYSTEM OF UNITS ( $1 UNITS)

hse Units

QUANTITY

Length

Mass

Time

Electric current

Thermodynamic temperature

Luminous intensity

Amount of substance

Sapplementary Units

QUANTITY

Plane angle

Solid angle

Derived Units

QUANTITY

Force

Energy

Power

Flux

Flux density

Frequency

Electric conductance

Electromotive force

Pressure, stress

UNIT

metre

kilogram

second

ampere

kelvin

candela

mole

UNIT

radian

steradian

UNIT

newton

joule

watt

weber

tesla

hertz

volt

pascal

SYMBOL

m

kg s

A

Ii

cd

SYMBUL

rad

sr

SYMBOL

N

J w Wb

T

Hz

S

V

Fa

DEBISITIOK

1 N = 1 kg.m/s’

1 J = 1 N.m

1 W = 1 J/s

1 Wb = 1 V.s

I T = 1 Wb/ma

1 Hz = 1 c/s (s-s)

1 S = 1 A/V

1 V = 1WjA

1 Pa = 1 NV/m’