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Checking references for intended status: Proposed Standard ---------------------------------------------------------------------------- (See RFCs 3967 and 4897 for information about using normative references to lower-maturity documents in RFCs) No issues found here. Summary: 9 errors (**), 0 flaws (~~), 3 warnings (==), 2 comments (--). Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 1 Network Working Group Jacob Palme 2 Internet Draft Stockholm University/KTH 3 draft-palme-int-print-03.txt Sweden 4 Category-to-be: Informational 5 Expires: September 1998 March 1998 7 Making Postscript and PDF International 9 Status of this Memo 11 This document is an Internet-Draft. Internet-Drafts are working 12 documents of the Internet Engineering Task Force (IETF), its areas, and 13 its working groups. Note that other groups may also distribute working 14 documents as Internet-Drafts. 16 Internet-Drafts are draft documents valid for a maximum of six months 17 and may be updated, replaced, or obsoleted by other documents at any 18 time. It is inappropriate to use Internet-Drafts as reference material 19 or to cite them other than as ``work in progress.'' 21 To learn the current status of any Internet-Draft, please check the 22 ``1id-abstracts.txt'' listing contained in the Internet-Drafts Shadow 23 Directories on ftp.is.co.za (Africa), nic.nordu.net (Europe), 24 munnari.oz.au (Pacific Rim), ds.internic.net (US East Coast), or 25 ftp.isi.edu (US West Coast). 27 This memo provides information for the Internet community. This memo 28 does not specify an Internet standard of any kind. Distribution of this 29 memo is unlimited. 31 Copyright (C) The Internet Society 1998. All Rights Reserved. 33 Differences between version 02 and 03 of this document 35 Made the dimensions more consistent, rounded inch dimensions to 1/10 36 (still within ISO 216 tolerances), fixed some typos and editorial 37 things, added requirement for min. 20 mm left/right margin for filing 38 holes, added recommendation for PDF over Postscript, replaced 39 'Acrobat' (name of an Adobe software product) by PDF (file format 40 standard name), added some references, etc. 42 Abstract 44 Certain text formats, for example Postscript (MIME-Type: 45 application/postscript; file extension .ps) and Portable Document Format 46 (MIME-Type: application/pdf; file extension .pdf) specify exactly the 47 page layout of the printed document. The commonly used paper format is 48 different in North America and the rest of the world. North America uses 49 the 'Letter' format, while the rest of the world mostly uses the ISO- 50 standard 'A4' format. This means that documents formatted on one 51 continent may not be easily printable on another continent. This memo 52 gives advice on how to produce documents which are equally well 53 printable with the Letter and the A4 formats. By using the advice in 54 this document, you can put up a document on the Internet, which 55 recipients can print without problem both in and outside North America. 57 A very short summary of the advice in this document: If you are using 58 U.S. Letter paper format, ensure that both the left and right margins 59 are at least 21 mm (0.8 in). If you are using A4 paper format, ensure 60 that both the top and bottom margins are at least 33 mm (1.3 in). 62 Table of contents 64 1. Introduction 65 2. Two methods for printing on different paper formats 66 2.1 Method 1: Use wider margins 67 2.2 Method 2: Print with reduced size 68 3. References 69 4. Author's Address 71 1. Introduction 73 Certain text formats, for example Postscript (MIME-Type: 74 application/postscript; file extension .ps) and Portable Document Format 75 (MIME-Type: application/pdf; file extension .pdf) specify exactly the 76 page layout of the printed document. The commonly used paper format is 77 different in North America and the rest of the world. North America uses 78 the 'Letter' format, while the rest of the world uses the 'A4' format. 80 The North American Letter format is 216 x 279 mm (8.5 x 11 in) while the 81 ISO standardised A4 format is 210 x 297 mm (8.3 x 11.7 in). The Letter 82 format is thus 6 mm (0.2 inches) wider, while the A4 format is 18 mm 83 (0.7 inches) taller. 85 This means that documents formatted on one continent may not be 86 printable on another continent. It is oboviously desirable that 87 documents on the Internet are printable on all continents. This paper 88 gives advice on how to achieve this. 90 This memo is not intended for HTML documents, but the advice may be of 91 value also for HTML developers in case they are using fixed-size 92 graphics and fixed WIDTH sizes of objects in HTML documents. 94 2. Three methods for printing on different paper formats 96 2.1 Method 1: Use wider margins 98 Paper format 99 you use when 100 converting 101 the document Suggested minimal margins 102 to Postscript Paper 103 or PDF orien- Suggested change Left Right Top Bot- 104 tation of margins tom 105 ------------ ----------- ----------------- ----- ----- ----- ----- 106 A4 Portrait Add 18 mm (0.7 20 mm 20 mm 33 mm 33 mm 107 (upright, inches) to the top 0.8" 0.8" 1.3" 1.3" 108 vertical) of page and bottom 109 of page margins 111 A4 Landscape Add 18 mm (0.7 33 mm 33 mm 15 mm 15 mm 112 (lying, inches) to the 1.3" 1.3" 0.6" 0.6" 113 horizontal) left and right 114 margins 116 Letter Portrait Add 6 mm (0.2 20 mm 26 mm 15 mm 15 mm 117 (upright, inches) to the 0.8" 1.0" 0.6" 0.6" 118 vertical) right margins 120 Letter Landscape Add 6 mm (0.2 15 mm 15 mm 21 mm 21 mm 121 (lying, inches) to the top 0.6" 0.6" 0.8" 0.8" 122 horizontal) of page and bottom 123 of page margins 125 The reason why you have to add 18 respectively 6 mm to both the top and 126 the bottom margin is that you do not know what kind of printer the 127 recipient uses, and different printers feed paper in different ways, 128 requiring the margin to be added either at the top or the bottom of the 129 paper. Left and right margins on any paper format should be at least 20 130 mm wide to accomodate filing with ISO 838 hole punches. 132 Note: Ensure that also headers, footers, and page numbers are within the 133 suggested minimal margins. Many word processors put headers, footers and 134 page numbers outside the specified text margins. 136 2.2 Method 2: Print with reduced size 138 This is a method useful for the recipient of a document with the wrong 139 paper size: The recipient sets the printer to print with reduced size. 140 When the sender produces the PDF or Postscript files, the sender should 141 'print' with 100 % size, but when the recipient prints the PDF or 142 Postscript files, and if the program for printing PDF or Postscript 143 files allows this, the recipient should print the document with 94 % or 144 less of full size. Many programs for printing Postscript files do not 145 allow this. In that case, the recipient can convert a Postscript 146 document to PDF format and then print it with the PDF printing program. 147 This requires, however, that the recipient has the Adobe Acrobat 148 Distiller program, which is not freeware. Recent versions of the 149 freeware ghostscript can also convert to PDF format. The user may also 150 have to specify the paper size as the actual paper size loaded in the 151 printer, not the paper size specified when the document was converted to 152 PDF or Postscript format. 154 It is also possible to edit the Postscript file, and add a scale command 155 to it, before sending it to the printer. 157 Method 2 can be more difficult for the recipient, who has to manage 158 these settings himself. However, manufacturers of printing software may 159 in the future make method 2 easier by making this service automatic, 160 perhaps controlled by a 'shrink to fit paper size' checkbox in the 161 printing window and a 'default shrink to fit paper size' preference 162 setting. 164 In general, the authors of this RFC recommend PDF as the prefered 165 formatted document distribution format over Postscript, not only because 166 PDF printing programs typically feature a 'shrink to fit' option to 167 handle different paper sizes elegantly, but also because PDF has built- 168 in per page data compression, PDF files can be displayed without being 169 fully downloaded, PDF is more portable, PDF has a better method of 170 rendering fonts not available in the printer and PDF allows to embed 171 URLs. 173 2.3 Method 3: Buy paper in the A4 size 175 People in North America who often need to print international documents 176 might choose to buy paper in the A4 size. It is available in the U.S. 177 from many large paper distribution companies, and almost all laser 178 printers support it. 180 3. Acknowledgements 182 Markus Kuhn has provided many helpful suggestions on this document. 184 4. References 186 Writing paper and certain classes of printed matter - Trimmed sizes - A 187 and B series, International Standard ISO 216, International Organization 188 for Standardization, Geneva, 1975. 190 Bond Papers and Index Bristols - Common Sheet Sizes, North American 191 National Standard ANSI X3.151, North American National Standards 192 Institute, 1987 194 Paper - Holes for general filing purposes - Specifications, 195 International Standard ISO 838, International Organization for 196 Standardization, Geneva, 1974. 198 Markus Kuhn: International Standard Paper Sizes. . 201 Tim Bienz, Richard Cohn, James R. Mechan: Portable Document Format 202 Reference Manual, Version 1.2, Adobe Systems Incorporated, 203 . 206 5. Author's Address 208 Jacob Palme Phone: +46-8-16 16 67 209 Stockholm University and KTH Fax: +46-8-783 08 29 210 Electrum 230 E-mail: jpalme@dsv.su.se 211 S-164 40 Kista, Sweden