பேப்பர் அளவுகள் தொடர்ச்சி(2)-இந்தியா

     அன்பு நண்பர்களே,வணக்கம். 
        இங்கு நமது நாட்டில் புழக்கத்தில் உள்ள பேப்பர் அளவுகள் பற்றிய தொடர்ச்சி................(2)..இங்கு காண்போம். 

Newspaper Sizes

The broadsheet newspaper size is the largest of the various newspaper formats and is characterized by long vertical pages. The term derives from types of popular prints – usually just of a single sheet – sold on the streets and containing various types of matter, from ballads to political satire. The first broadsheet newspaper was the Dutch Courante, published in 1618. Newspapers currently using the broadsheet format include; The Daily Telegraph in the UK, The National Post in Canada, Die Zeit in Germany, The Times of India, The Japan Times and USA Today. The Berliner format is used by many European newspapers, including; The Guardian in the UK, Expresso in Portugal, The University Observer in Ireland, Le Monde in France and La Repubblica in Italy. As the term “tabloid” has become synonymous with down-market newspapers in some areas, some small-format papers which claim a higher standard of journalism refer to themselves as “compact” newspapers instead, however both are generally the same size. Some newspapers that use this format include; The Sun and The Times in the UK, NRC Handelsblad in the Netherlands, Berlingske Tidende in Denmark and the Daily Telegraph in Australia.



                                                 பேப்பர் 

சுருக்க எழுத்துக்களின் விரிவாக்கம்.

AA- Active Alkali
AAC- Allowable Annual Cut
ABB- Asea Brown Boveri
AC- Alkali Cellulose
ACFM- Actual Cubic Feet per Minute
AD- Air Dry
AFH- Away From Home
AFPA- Alberta Forest Product Association
AF & PA- American Forest and Paper Association
AIChE- American Institute of Chemical Engineers
AICC- Association of Independent Corrugated Converters
AKD- Alkyl Ketene Dimer
A/M- Automatic/Manual
ANSI- American National Standard Institute
AOX- Adsorable Organic Halogen
AOEO- Alternative Offset and Equal Offset
AP- Alkyl Phenol
APE- Alkyl Phenol Etoxylates
APMP- Alkaline Peroxide Mechanical Pulping
APPITA- Technical Association of Australian & New Zealand Pulp & Paper Industry
APP- Ammonium Poly Phosphate, Asian Pulp & Paper, Alkaline Peroxide Pulp
AQ- Anthra Quinone
AR- Adhesive Ratio
ASA- Alkenyl Succinic Anhydride
ASL- Above Sea Level
AST- Activated Sludge Treatment
ASTM- American Society for Testing and Material
ATP- Adenosine Tri-Phosphate

BAT- Best Available Technology
BACT- Best Available Control Technology
BC- Boise Cascade
BCT- Box Compression Test
BCMP- Bisulfite Chemi Mechanical Pulp
BCTMP- Bleached Chemo Thermo Mechanical Pulp
BD- Bone Dry
BDS- Bone Dry Solids
BEKP- Bleached Eucalyptus Kraft Pulp
BF- Bold Face
BKP- Bleached Kraft Pulp
BHP- Brake Horse Power, Boiler Horse Power
BHR- Blow Heart Recovery
B/L or BL- Bleach Loss
BLS- Black Liquor Solids
BMC- Box Manufacturer Certificate
BOD- Biological Oxygen Demand
BPBMA- British Paper & Board Makers Association
BRE- Business Reply Envelope
BSW- Brown Stock Paper
BTU- British Thermal Unit
B/W or BW- Basis Weight
BY- Bleached Yield

C- Chlortination
CAA- Clean Air Act
CB- Coated Back
CCSP- Cold Caustic Soda Pulping
CDT- Corrected Drainage Time
CEPI- Confederation of European Paper Industries
CF- Coated Front
CFB- Coated Front & Back
CFM- Cubic Feet per Minute
C1S- Coated One Side
C2S- Coated Two Side
CGW- Chemi Ground Wood
CHP- Combined Heat & Power
CI- Continuous Improvement
CMC- Carboxy Methyl Cellulose
CMD- Cross Machine Direction
CMMS- Computerized Maintenance Management System
CMP- Chemi Mechanical Pulp
CMT- Corrugated Medium Test, Concora Medium Test
COD- Chemical Oxygen Demand
COF- Coefficient of Friction
CPO- Computer Print Out
CPPA- Canadian Pulp & Paper Association
CPPRI- Central Pulp and Paper Research Institute
CRB- Chemical Recovery Boiler
CRMP- Chemi Refiner Mechanical Pulp
CS- Cast Steel
CSF- Canadian Standard Freeness
CSP- Cold Soda Pulping
CTLF- Chemically Treated Long Fiber
CTMP- Chemo Thermo Mechanical Pulp
CW- Compression Wood
CWSN- Critical Wax Strength Number
CY- Cubic Yard

                    

                   

PAPER SIZES IN INDIA & WORLD

      அன்பு நண்பர்களே,வணக்கம். 

    இந்தப்பதிவில் இந்தியா நாட்டில் புழக்கதில் உள்ள பேப்பர் அளவுகள் பற்றி உங்களது கவனத்திற்காகப் பதிவிடுகிறேன். அறிந்து கொள்ளுங்கள்.மற்றவர்களுக்கும் கூறுங்கள்.தவிர்க்க இயலாத காரணத்தால் தெளிவாகப் பதிவிட இயலவில்லை.பிறகு  நமது இந்தியாவின் புழக்கத்திற்கேற்ற பேப்பர் அளவுகளை,பயன்களை, சேகரித்துப் பதிவிடுகிறேன்.அது பற்றிய விபரங்கள் தெரிந்தவர்களும் இங்கு கருத்துரையில் தகவல் கொடுத்தால் நல்லது.

            A4-இந்த அளவுள்ள பேப்பர்தான் அதிகப்புழக்கதில் உள்ளன.


 

         தாள் அளவு

     ஆவணங்களுக்கும், வேறு தேவைகளுக்கும் பயன்படக்கூடிய தாள் அளவுகள், தொடர்பான சீர்தரங்கள்,நாட்டுக்கு நாடும், காலத்துக்குக் காலமும் வேறுபாடாக இருந்து வந்துள்ளன. ஆனால் இன்று, முக்கியமாக இரண்டு வகையான சீர்தரங்களே அனைத்துலக அளவில் பயன்பாட்டில் உள்ளன. ஒன்று, அனைத்துலக சீர்தர நிறுவனங்களின் அளவுகள், மற்றது வட அமெரிக்கா அளவுகள்.

     அனைத்துலக சீர்தரம்: 

            ஐஎஸ்ஓ 216

            ஐஎஸ்ஓ A அளவுகள்.

               அனைத்துலகத் தாள் அளவு சீர்தரமான, ISO-216 என்பது மீட்டர் அளவை முறையில் அமைந்தது. இந்த முறையானது , ஒரு சதுரமீட்டர் பரப்பளவையும், 1 : 1.4142 என்ற அளவு விகிதத்தையும் கொண்ட தாளை அடிப்படை அளவாகக் கொண்டது. இந்த அடிப்படையான தாள் அளவு A0 எனப்படுகின்றது. இந்த A வரிசைத் தாள் அளவு முறையில் A0 என்பதே மிகப் பெரிய அளவாகும். A0 அளவினை குறுக்காக மடித்தால் A1 அளவாகும். A1 அளவினை குறுக்காக மடித்தால் A2 அளவாகும்.இவ்வாறாக ஒவ்வொன்றையும் குறுக்காக மடித்து,மடித்து குறைந்து செல்லும் அளவுகளுக்கு A1, A2, A3, A4, ..... எனப் பெயரிடப்பட்டுள்ளன. இவற்றில் அதிகமாக, மிகப் பரவலாகப் பயன்படும் தாள் அளவு A4 (210 x 297 மிமீ) ஆகும்.

ISO தாள் அளவுகள் 1 : 2 இன் வர்க்கமூலம் ( Ratio = 1 : 1.4142 ) என்னும் விகிதத்தை அடிப்படையாகக் கொண்டவை. 1768-ஆம் ஆண்டில் ஜெர்மானிய நாட்டு அறிவியல் அறிஞர் இந்த விகிதத்தின் நன்மைகள் குறித்து, 1768 ஆம் ஆண்டிலேயே, Georg Lichtenberg என்பவர் குறிப்பிட்டிருந்தார்.இருபதாம் ஆரம்பத்தில் Doctor,Walter Porstmann என்பவர் Georg Lichtenberg –ன் குறிப்புகளை பல்வேறு தாள் அளவுகளாக உருவாக்கினார்.

இச் சீர்தர அளவுகள் மிக விரைவாக மற்ற நாடுகளுக்கும் பரவியது..

1977 ஆம் ஆண்டளவில், 148 நாடுகளில் 88 நாடுகளில் A4 அளவே கடிதங்களுக்குப் பயன்பட்டது. இன்று அமெரிக்கா, கனடா இரு நாடுகள் மட்டும் இந்த முறையைப்பயன்படுத்தவில்லை

ஐஎஸ்ஓ/டிஐஎன் தாள் அளவுகள்.  மில்லிமீட்டரிலும், அங்குலத்திலும், இங்கு காண்க.

A SERIES	mm X mm	Inch X Inch	B SERIES	mm X mm	Inch X Inch
A0	841 X 1189	33.11 X 46.81	B0	1000 X 1414	39.37 X 55.67
A1	594 X 841	23.39 X 33.11	B1	707 X 1000	27.83X 39.37
A2	420 X 594	16.54 X 23.39	B2	500 X 707	19.68 X 27.83
A3	297 X 420	11.69 X 16.54	B3	353 X 500	13.90 X 19.68
A4	210 X 297	8.27 X 11.69	B4	250 X 353	9.84 X 13.90
A5	148 X 210	5.83 X 8.27	B5	176 X 250	6.93 X 9.84
A6	105 X 148	4.13 X 5.83	B6	125 X 176	4.92 X 6.93
A7	74 X 105	2.91 X 4.13	B7	88 X 125	3.46 X 4.92
A8	52 X 74	2.05 X 2.91	B8	62 X 88	2.44 X 3.46
A9	37 X 52	1.46 X 2.05	B9	44 X 62	1.73 X 2.44
A10	26 X 37	1.02 X 1.46	B10	31 X 44	1.22 X 1.73

 

C SERIES	mm X mm	Inch X Inch	Japanese B Series	mm X mm	Inch X Inch
C0	917X1297	36.10X51.06	B0	1030 x 1456	40.55x57.32
C1	648X917	25.53X36.10	B1	728 x 1030	28.66x40.55
C2	458X648	18.05X25.53	B2	515x728	20.27x28.66
C3	324X458	12.76X18.05	B3	364x515	14.33x20.27
C4	229X324	9.02X12.76	B4	257x364	10.13x14.33
C5	162X229	6.38X9.02	B5	182x257	7.16x10.13
C6	114X162	4.51X6.38	B6	128x182	5.06x7.16
C7	81X114	3.19X4.51	B7	91x128	3.58x5.06
C8	57X81	2.25X3.19	B8	64x91	2.53x3.58
C9	40X57	1.59X2.25	B9	45x64	1.79x2.53
C10	28X40	1.12X1.59	B10	32x45	1.26x1.79

        

        (+) ISO D paper sizes

	Millimeters		Inches		Points
	Height	Width	Height	Width	Height	Width
D0	771	1090	30.35	42.91	2186	3090

 
       

A0 & A1	Technical drawings, posters
A1 & A2	Flip charts
A2 & A3	Drawings, diagrams, large tables
A4	Letters, magazines, forms, catalogs, laser printer and copying machine output
A5	Note pads
A6	Postcards
B5, A5, B6  A6	Books
C4, C5, C6	Envelopes for A4 letters: unfolded (C4), folded once (C5), folded twice (C6)
B4 & A3	Newspapers, supported by most copying machines in addition to A4
B8 & A8	Playing cards

US Engineering	mm X mm	Inch X Inch	US Architecture	mm X mm	Inch X Inch
ANSI A	215.9X279.4	8.5X11	ARCH A	228.6X304.8	9X12
ANSI B	279.4X431.8	11X17	ARCH B	304.8X457.2	12X18
ANSI C	431.8X558.8	17X22	ARCH C	457.2X509.6	18X24
ANSI D	588.8X863,6	22X34	ARCH D	609.6X914.4	24X36
ANSI E	863.6X1117.6	34X44	ARCH E	914.4X1219.2	36X48

  

 

US Misc.	mm X mm	Inch X Inch	US Misc.	mm X mm	Inch X Inch
Letter	215.9X279.4	8.5X11	Folio	215.9X330.2	8.5X13
Legal	215.9X355.6	8.5X14	Quarto	215X275	8.46X10.8
US Govt	203.2X279.4	8X11	Tabloid	279.4X431.8	11X17
Statement	139.7X215.9	5.5X8.5	Ledger	279.4X431.8	11X17
Executive	184.2X266.7	7.25X10.5	Foolscap	342.9X431.8	13.5X17

       

JB SERIES	mm X mm	Inch X Inch	JB SERIES	mm X mm	Inch X Inch
JB0	1030X1456	40.55X57.32	JB6	128X182	5.06X7.17
JB1	728X1030	28.66X40.55	JB7	91X128	3.59X5.06
JB2	515X728	20.27X28.66	JB8	64X91	2.53X3.59
JB3	364X515	14.33X20.27	JB9	45X64	1.8X2.53
JB4	257X364	10.13X14.33	JB10	32X45	1.27X1.8
JB5	182X257	7.17X10.13

 

RA SERIES	mm X mm	Inch X Inch	SRA SERIES	mm X mm	Inch X Inch
RA0	860X1220	33.86X48.03	SRA0	900X1280	35.43 X 50.39
RA1	610X860	24.01X33.86	SRA1	640X900	25.19X35.43
RA2	430X610	16.93X24.01	SRA2	450X640	17.71X25.19
RA3	305X430	12.00X16.93	SRA3	320X450	12.59X17.71
RA4	215X305	8.46X12.00	SRA4	225X320	8.85X12.59

                        கவனியுங்கள்.  

       Part of the ISO 216 standard

       A4 is part of a set or range of page sizes, called the ISO A or ISO 216 standard. This international standard is based on the German DIN 476 standard from 1922. A4 is actually often referred to as DIN A4. The Japanese have adopted the same range of paper sizes in their JIS P 0138-61 standard.
By folding an A4 in two along its shortest side, you create an A5 document. Two A4 pages next to each other in a spread equals the A3 paper size. This way a range of paper sizes is created from A0 (which has a surface of one square meter) to A10. The height/width ratio remains constant for all sizes: 1:1.41 or the square root of 2. The dimensions always get rounded to the nearest millimeter.

      அன்பர்களே,வணக்கம். 

            இதற்குக்கீழ் தங்களுக்கு பொறுமை இருந்தால் மட்டுமே மேற்கொண்டு படியுங்கள்.நன்றிங்க!

                          (1)  Paper sizes

This list of the common American and European paper sizes includes the ISO standards, which are used globally. All dimensions are specified in inches, millimeters as well as PostScript points (1/72 inch, always rounded off).

This overview covers:

• ISO page sizes – The ISO A series is the most frequently used page measurement standard. It includes the DIN A4 format. The ISO B sizes are used for poster printing while ISO C is meant for envelopes. The SRA standard defines press sheet sizes and is used in the printing industry.
• American paper size dimensions – such as ‘Letter’, ‘Legal’ and the ANSI series.
• English sheet sizes – with a focus on formats for writing paper and book printing.

                (2) ISO A paper sizes

The A-series consists of a logical set of paper sizes that are defined by the ISO 216 standard. The largest size (A0) measures one square meter. The height/width ratio remains constant (1:1.41) for all sizes. This means you get the A1 size by folding an A0 paper in two along its shortest side. Then fold the A1 size in two to get an A2 size paper, and so on… A-sizes are used to define the finished paper size in commercial printing: A4 is for office documents, A5 is for notepads and A6 is for postcards.

                       (3)ISO B paper sizes

The same logic from the A-sizes also applies for the B-series, except here the starting point was the dimension of one of the sides, which starts at 1 meter. B-sizes are often used for posters.

	Millimeters		Inches		Points
	Height	Width	Height	Width	Height	Width
B0	1414	1000	55.67	39.37	4008	2835
B1	1000	707	39.37	27.83	2835	2004
B2	707	500	27.83	19.69.	2004	1417
B3	500	353	19.69	13.90	1417	1001
B4	353	250	13.90	9.84	1001	709
B5	250	176	9.84	6.93	709	499
B6	176	125	6.93	4.92	499	354
B7	125	88	4.92	3.46	354	249
B8	88	62	3.46	2.44	249	176
B9	62	44	2.44	1.73	176	125
B10	44	31	1.73	1.22	125	88

                     (4) ISO C paper sizes

C-sizes are used for envelopes to match the A-series paper. I have omitted unrealistic sizes like C0 (imagine an envelope measuring 917 by 1297 millimetres).

	Millimeters		Inches		Points
	Height	Width	Height	Width	Height	Width
C2	458	648	18.03	25.51	578	1837
C3	324	458	12.76	18.03	919	578
C4	229	324	9.02	12.76	649	919
C5	162	229	6.38	9.02	459	649
C6	114	162	4.49	6.38	323	459

                               (5)ISO RA & SRA paper sizes

                       These oversized papersizes are used by printers. The dimensions in millimetres are rounded to the nearest value.

	Millimeters		Inches		Points
	Height	Width	Height	Width	Height	Width
SRA0	900	1280	35.43	50.39	2551	3628
SRA1	640	900	25.20	35.43	1814	2551
SRA2	450	640	17.72	25.20	1276	1814
SRA3	320	450	12.59?	17.72	907?	1276
SRA4	225	320	8.86?	12.59?	638?	907?
RA0	860	1220	33.86	48.03	2438	3458
RA1	610	860	24.02	33.86	1729	2438
RA2	430	610	16.93	24.02	1219	1729

                (6)  American paper sizes

The US and Canada do not use the international standards but instead rely on the paper sizes below. The ANSI standard was added in 1995 to create a set of sizes that are based on shared dimensions. It lacks however the consistent aspect ratio of the ISO A-series.

	Millimeters		Inches		Points
	Height	Width	Height	Width	Height	Width
Letter (ANSI A)	279.4	215.9	11.00	8.50	792	612
Legal	355.6	215.9	14.00	8.50	1008	612
Ledger (ANSI B)	431.8	279.4	17.00	11.00	1224	792
Tabloid (ANSI B)	279.4	431.8	11.00	17.00	792	1224
Executive	266.7	184.1	10.55	7.25	756	522
ANSI C	432	559	17.00	22.00	1224	1584
ANSI D	559	864	22	34	1584	2448
ANSI E	864	1118	34.00	44.00	2448	3168

           (7)English paper sizes (writing papers)

The English nowadays use the A-sizes for office and general use. I have no idea whether many of these definitions are still in use today. Imperial and half-imperial still seem to be widely used by artists.

	Millimeters		Inches		Points
	Height	Width	Height	Width	Height	Width
Foolscap	419	336	16.50	13.25	1188	954
Small Post	469	368	18.50	14.50	1332	1044
Sheet and 1/3 cap	588	336	22.00	13.25	1584	954
Sheet and 1/2 cap	628	336	24.75	13.25	1782	954
Demy	507	394	20.00	15.50	1440	1116
Large Post	533	419	21.00	16.50	1512	1188
Small medium	558	444	22.00	17.50	1584	1260
Medium	584	457	23.00	18.00	1656	1296
Small Royal	609	482	24.00	19.00	1728	1368
Royal	634	507	25.00	20.00	1800	1440
Imperial	761	559	30.00	22.00	2160	1584

       (8) UK MATRIC BOOK PRINTING SIZES

       or books A-sizes often aren’t used because A4 is too large and A5 too small. Metric Royal Octavo and Metric Crown Quarto are 2 frequently used sizes that are more comfortable to hold and read.

	Millimeters		Inches		Points
	Height	Width	Height	Width	Height	Width
Metric Crown Quarto	246	189	9 11/16	7 7/16	697	536
Metric Crown Octavo	186	123	7 5/16	4 13/16	527	349
Metric Large Crown Quarto	258	201	10 3/16	7 7/8	731	570
Metric Large Crown Octavo	198	129	7 13/16	5 1/16	561	366
Metric Demy Quarto	276	219	10 7/8	8 5/8	782	621
Metric Demy Octavo	216	138	8 1/2	5 7/16	612	391
Metric Royal Quarto	312	237	12 1/4	9 5/16	884	672
Metric Royal Octavo	198	129	7 13/16	5 1/16	561	366

  

     (9)International standard paper sizes

                 Standard paper sizes like ISO A4 are widely used all over the world today. This text explains the ISO 216 paper size system and the ideas behind its design.

               The ISO paper size concept

                                  In the ISO paper size system, the height-to-width ratio of all pages is the square root of two (1.4142 : 1). In other words, the width and the height of a page relate to each other like the side and the diagonal of a square. This aspect ratio is especially convenient for a paper size. If you put two such pages next to each other, or equivalently cut one parallel to its shorter side into two equal pieces, then the resulting page will have again the same width/height ratio.

               The ISO paper sizes are based on the metric system. The square-root-of-two ratio does not permit both the height and width of the pages to be nicely rounded metric lengths. Therefore, the area of the pages has been defined to have round metric values. As paper is usually specified in g/m², this simplifies calculation of the mass of a document if the format and number of pages are known.

         ISO 216 defines the A series of paper sizes based on these simple principles:

• The height divided by the width of all formats is the square root of two (1.4142).
• Format A0 has an area of one square meter.
• Format A1 is A0 cut into two equal pieces. In other words, the height of A1 is the width of A0 and the width of A1 is half the height of A0.
• All smaller A series formats are defined in the same way. If you cut format An parallel to its shorter side into two equal pieces of paper, these will have format A(n+1).
• The standardized height and width of the paper formats is a rounded number of millimeters.

             For applications where the ISO A series does not provide an adequate format, the B series has been introduced to cover a wider range of paper sizes. The C series of formats has been defined for envelopes.

• The width and height of a Bn format are the geometric mean between those of the An and the next larger A(n−1) format. For instance, B1 is the geometric mean between A1 and A0, that means the same magnification factor that scales A1 to B1 also scales B1 to A0.
• Similarly, the formats of the C series are the geometric mean between the A and B series formats with the same number. For example, an (unfolded) A4 size letter fits nicely into a C4 envelope, which in turn fits as nicely into a B4 envelope. If you fold this letter once to A5 format, then it will fit nicely into a C5 envelope.
• B and C formats naturally are also square-root-of-two formats.

                Note: The geometric mean of two numbers x and y is the square root of their product, (xy)^1/2, whereas their arithmetic mean is half their sum, (x+y)/2. For example, the geometric mean of the numbers 2 and 8 is 4 (because 4/2 = 8/4), whereas their arithmetic mean is 5 (because 5−2 = 8−5). The arithmetic mean is half-way between two numbers by addition, whereas the geometric mean is half-way between two numbers by multiplication.

By the way: The Japanese JIS P 0138-61 standard defines the same A series as ISO 216, but a slightly different B series of paper sizes, sometimes called the JIS B or JB series. JIS B0 has an area of 1.5 m², such that the area of JIS B pages is the arithmetic mean of the area of the A series pages with the same and the next higher number, and not as in the ISO B series the geometric mean. For example, JB3 is 364 × 515, JB4 is 257 × 364, and JB5 is 182 × 257 mm. Using the JIS B series should be avoided. It introduces additional magnification factors and is not an international standard.

               The following table shows the width and height of all ISO A and B paper formats, as well as the ISO C envelope formats. The dimensions are in millimeters:

A Series Formats		B Series Formats		C Series Formats
4A0	1682 × 2378	–	–	–	–
2A0	1189 × 1682	–	–	–	–
A0	841 × 1189	B0	1000 × 1414	C0	917 × 1297
A1	594 × 841	B1	707 × 1000	C1	648 × 917
A2	420 × 594	B2	500 × 707	C2	458 × 648
A3	297 × 420	B3	353 × 500	C3	324 × 458
A4	210 × 297	B4	250 × 353	C4	229 × 324
A5	148 × 210	B5	176 × 250	C5	162 × 229
A6	105 × 148	B6	125 × 176	C6	114 × 162
A7	74 × 105	B7	88 × 125	C7	81 × 114
A8	52 × 74	B8	62 × 88	C8	57 × 81
A9	37 × 52	B9	44 × 62	C9	40 × 57
A10	26 × 37	B10	31 × 44	C10	28 × 40

           The allowed tolerances are ±1.5 mm for dimensions up to 150 mm, ±2 mm for dimensions above 150 mm up to 600 mm, and ±3 mm for dimensions above 600 mm. Some national equivalents of ISO 216 specify tighter tolerances, for instance DIN 476 requires ±1 mm, ±1.5 mm, and ±2 mm respectively for the same ranges of dimensions.

           Application examples

The ISO standard paper size system covers a wide range of formats, but not all of them are widely used in practice. Among all formats, A4 is clearly the most important one for daily office use. Some main applications of the most popular formats can be summarized as:

A0, A1	technical drawings, posters
A1, A2	flip charts
A2, A3	drawings, diagrams, large tables
A4	letters, magazines, forms, catalogs, laser printer and copying machine output
A5	note pads
A6	postcards
B5, A5, B6, A6	books
C4, C5, C6	envelopes for A4 letters: unfolded (C4), folded once (C5), folded twice (C6)
B4, A3	newspapers, supported by most copying machines in addition to A4
B8, A8	playing cards

The main advantage of the ISO standard paper sizes becomes obvious for users of copying machines: 
                                       நன்றிங்க! 

           கொங்குத் தென்றல் ,

             ஈரோடு மாவட்டம்.

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