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SEMI S1-0701 E © SEMI 1986, 2001 17 APPENDIX 2 TRANSLATIONS OF SIGNAL WORDS NOTE: The material in this appe ndi x is an official part of SEMI S1 and was appr oved by full letter ballot procedure s on April 3 0, 2001 by t…
SEMI S1-0701
E
© SEMI 1986, 2001 16
Table A1-3 Prohibition Symbols
# Referent Source Symbol Description
1
No Smoking ANSI Z535.3
Lighted cigarette
2
No Open Flame IEC 61310
Lighted match
3
No Access For
Unauthorized
Persons
IEC 61310
Person shouting with outstretched hand
4
No Portable
Transmitters
Wireless telephone
5
No Pacemakers
Ball and line attached to heart
6
General Prohibited
Action
(should be
supplemented with
words)
ISO 3864
Prohibition surround shape
SEMI S1-0701
E
© SEMI 1986, 2001 17
APPENDIX 2
TRANSLATIONS OF SIGNAL WORDS
NOTE: The material in this appendix is an official part of SEMI S1 and was approved by full letter ballot procedures on April 30,
2001 by the North American Regional Standards Committee.
Translation of the signal words and word message are optional considerations. If the signal word of a safety label is
to be translated, the following translations should be used.
NOTICE:
Paragraphs entitled “NOTE” are not an official part of this safety guideline and are not intended to modify or
supersede the official safety guideline. These have been supplied by the committee to enhance the usage of the
safety guideline.
SEMI makes no warranties or representations as to the suitability of the guidelines set forth herein for any particular
application. The determination of the suitability of the guideline is solely the responsibility of the user. Users are
cautioned to refer to manufacturer’s instructions, product labels, product data sheets, and other relevant literature
respecting any materials or equipment mentioned herein. These guidelines are subject to change without notice.
The user’s attention is called to the possibility that compliance with this guideline may require use of copyrighted
material or of an invention covered by patent rights. By publication of this guideline, SEMI takes no position
respecting the validity of any patent rights or copyrights asserted in connection with any item mentioned in this
guideline. Users of this guideline are expressly advised that determination of any such patent rights or copyrights,
and the risk of infringement of such rights, are entirely their own responsibility.
SEMI S1-0701
E
© SEMI 1986, 2001 18
RELATED INFORMATION 1
MINIMUM LETTER HEIGHT CALCULATIONS
NOTE: This related information is not an official part of SEMI S1 and is not intended to modify or supersede the official
guideline. It has been derived from the informative Annex B of ANSI Z535.4-1998. Publication is authorized by vote of the
responsible committee. Determination of the suitability of this material is solely the responsibility of the user.
R1-1 A common concern when designing safety labels is determining the minimum letter height of text. This
Related Information describes one method that may be used to determine a minimum letter height.
Table R1-1 Examples of Word Message Uppercase Letter Heights at Various Viewing Distances
Viewing Distance Minimum Letter Height for
FAVORABLE Reading
Conditions
Recommended Letter Height
for FAVORABLE Reading
Conditions
Recommended Letter
Height for UNFAVORABLE
Reading Conditions
300 mm (12 in.) or less* 2 mm (0.08 in) 2 mm (0.08 in) 2 mm (0.08 in)
600 mm (24 in.) 2.5 mm (0.10 in) 4 mm (0.16 in) 4 mm (0.16 in)
900 mm (35 in.) 3 mm (0.12 in) 4.75 mm (0.19 in) 6 mm (0.24 in)
1.2 m (47 in.) 3.5 mm (0.14 in) 5.5 mm (0.22 in) 8 mm (0.31 in)
1.5 m (59 in.) 4 mm (0.16 in) 6.25 mm (0.25 in) 10 mm (0.39 in)
1.8 m (71 in.) 4.5 mm (0.18 in) 7 mm (0.28 in) 12 mm (0.47 in)
2.1 m (83 in.) 5 mm (0.20 in) 7.75 mm (0.31 in) 14 mm (0.55 in)
2.4 m (94 in.) 5.5 mm (0.22 in) 8.5 mm (0.33 in) 16 mm (0.63 in)
* 2 mm (0.079 in.) is the suggested minimum type size for use on safety labels.
Calculations for Recommended Letter Heights (in mm) for FAVORABLE Reading Conditions:
600 mm or less: (viewing distance in mm) / 150
>600 mm to 6 m: [(viewing distance in mm - 600) x .0025] + 4
Calculation for Recommended Letter Heights for UNFAVORABLE Reading Conditions (all distances):
(viewing distance) / 150
NOTICE:
Paragraphs entitled “NOTE” are not an official part of this safety guideline and are not intended to modify or
supersede the official safety guideline. These have been supplied by the committee to enhance the usage of the
safety guideline.
SEMI makes no warranties or representations as to the suitability of the guidelines set forth herein for any particular
application. The determination of the suitability of the guideline is solely the responsibility of the user. Users are
cautioned to refer to manufacturer’s instructions, product labels, product data sheets, and other relevant literature
respecting any materials or equipment mentioned herein. These guidelines are subject to change without notice.
The user’s attention is called to the possibility that compliance with this guideline may require use of copyrighted
material or of an invention covered by patent rights. By publication of this guideline, SEMI takes no position
respecting the validity of any patent rights or copyrights asserted in connection with any item mentioned in this
guideline. Users of this guideline are expressly advised that determination of any such patent rights or copyrights,
and the risk of infringement of such rights, are entirely their own responsibility.
Copyright by SEMI® (Semiconductor Equipment and Materials
International), 3081 Zanker Road, San Jose, CA 95134. Reproduction of
the contents in whole or in part is forbidden without express written
consent of SEMI.