Paper - Printing and business paper - Requirements for copy paper for dry toner imaging processes Papper - Skrivar- och kontorspapper - Krav på papper för torrtonerskrivare och kopiatorer The European Prestandard has the status of a Swedish Standard. This document contains the English version of. Swedish Standards corresponding to documents referred to in this Standard are listed in Catalogue of Swedish Standards, issued by SIS. The Catalogue lists, with reference number and year of Swedish approval, International and European Standards approved as Swedish Standards as well as other Swedish Standards. Den europeiska förstandarden gäller som svensk standard. Detta dokument innehåller den engelska versionen av. Motsvarigheten och aktualiteten i svensk standard till de publikationer som omnämns i denna standard framgår av Katalog över svensk standard, som ges ut av SIS. I katalogen redovisas internationella och europeiska standarder som fastställts som svenska standarder och övriga gällande svenska standarder.
English version Paper - Printing and business paper - Requirements for copy paper for dry toner imaging processes Papier Papier d impression et de bureau - Papier - Druck- und Büropapiere - Specifications pour papier pour photocopie Anforderungen an Kopierpapier für pour précédes de reproduction par toner sec Vervielfältigen mit Trockentoner This European Prestandard (ENV) was approved by CEN on 1996-10-05 as a prospective standard for provisional application. The period of validity of this ENV is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the ENV can be converted into an European Standard (EN). CEN members are required to announce the existance of this ENV in the same way as for an EN and to make the ENV available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the ENV) until the final decision about the possible conversion of the ENV into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
Page 2 Provläsningsexemplar / Preview 1 2 3 4 5 Content Foreword......................................................... Introduction....................................................... Scope............................................................ Normative References................................................ Definitions........................................................ Principle........................................................... Sampling.......................................................... 6 Conditioning........................................................ 7 Requirements....................................................... 8 Migratory substances.......................................... 9 10 Annex Annex Packaging Test report A (normative) B (normative).................................................................................................................. Runnability................................................ CEN Master Test............................................ Annex C (normative) Determination of cutting quality.................................. Page
Page 3 Foreword This European Prestandard has been prepared by Technical Committee CEN/TC 172 "Pulp, paper and board, the secretariat of which is held by DIN. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to announce this European Prestandard: Austria, Belgium, Denmark, Finland, France, Germany, Greace, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
Page 4 Provläsningsexemplar / Preview Introduction Paper for use in dry toner imaging processes, the common copy paper, represents one of the major grades of the world s paper market end is therefore of crucial interest for the paper industry. Most copiers and laser-printers work with dry toner imaging. Several national standards for copy paper apply in Europe. Since the implementation of the European Union Act (January 1993) and the growing trade-volume within the European countries (EU and EFTA), there has been an acute need to harmonize existing standards. The aim is to facilitate business and, ultimately, bring about greater customer satisfaction. The CEN/TC 172 standardization work has concentrated on the prevalent features of the bulk of the copy paper market, to avoid making a European Prestandard that would be too complex or too indecisive. When creating this European Prestandard, the responsible working group was faced with the fact that analysis methods were not always precise enough to predict the performance of copy paper in various imaging machines. Therefore, CEN/TC 172 has put aside several technical paper characteristics and focused on defining and specifying the equivalents of printability and runnabiliy, as well as on those paper properties that directly appeal to the end-user. Since a standard copier does not exist and customer demands on some accommodating and aesthetic aspects will vary, several characteristics were not given a required value. In such cases, though, test methods are provided that will facilitate the making of adequate agreements between supplier and customer. CEN/TC 172 has decided to publish this specification as a European Prestandard, because the responsible working group has also developed five test methods that do require limit values, but still lack sufficient practical experience to complete yet. However, it was felt necessary to publish the work to make the market aware of the standard and start using it. The responsible working group will continue the work and has the ambition to finalise it as an EN, within two years, or earlier, if adequate results are obtained. 1 Scope This European Prestandard specifies the requirements for uncoated cut-size paper sheets for dry toner imaging processes (i.e. copy paper), in 80 g/m 2 and in A4 format based on EN 20216. Other grammages and sizes of the ISO-A series are covered by this European Prestandard, as long as the requirements specified in this European Prestandard are fulfilled. 2 Normative References This European Prestandard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Prestandard only when incorporated in it by amendment or revision. For dated references the latest edition of the publication referred to applies. EN 644 Paper untrimmed sizes - Primary range and supplementary range designation and tolerance - Expression of direction of manufacture ENV 12448 Printing and business paper - Determination of the coefficient of static friction ENV 12282 Paper - Printing and business paper - Determination of edge dust ENV 12283 Paper - Printing and business paper - Determination of toner adhesion EN 20187 Paper, baord and pulps - Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples (ISO 187: 1990) EN 20216 Writing paper and certain classes of printed matter - Trimmed sizes - A and B series (ISO 216: 1975)
Page 5 EN 20287 EN 20534 (ISO 534: 1988) EN ISO 186 EN ISO 536 Determination of moisture content - Oven drying method (ISO 287: 1985) Determination of thickness and apparent bulk density or apparent sheet density Sampling to determine average quality (ISO 186: 1994) Determination of grammage (ISO 536: 1995) ISO 2471 Determination of opacity (paper backing) ISO 3783 Determination of resistance to picking - (Electric model) ISO 4046 Paper, board, pulp and related terms - Vocabulary - Diffuse reflectance method Accelerating speed method using the IGT tester lso/dis 11475 ClE-Whiteness (outdoor daylight, D 65/10 ) lso/dis 14968 Measurement of curl in cut-sized office writing papers IEC 93 Test method for surface resistivity DIN 53109 Testing of paper and board - Determination of abrasion by the abrasion wheel method NF Q 03055 Essais des papier et carton - Détermination de la resistance à I abrasion du papier et du carton, selon la méthode TABER 3 Definitions For the purposes of this Prestandard the following definitions apply: 3.1 cut size paper sheet: Sheets, cut according to the ISO-A series standard. 3.2 dry toner: Ink powder used for imaging in printers and copiers [ENV 12283] 3.3 dry toner imaging process: Imaging method using dry toner, that is generally fixed on paper by heat and/or pressure [ENV 12283] 3.4 paper jam: Paper induced failure in the copy/print process path, causing a machine shut-down requiring corrective action by the operator. Included are failures in sorter-bins and/or collection-trays, when operating below 80 % of each single bin s maximum capacity, as stated by the machine manufacturer. Excluded are control panel actions. 3.5 Curl 3.5.1 curl: Deformation of a sheet of paper or board over all its surface which therefore tends to roll up on itself (see ISO 4046). 3.5.2 curl before copy: Curl of the paper taken directly from the moisture-proof wrapping.
Page 6 Provläsningsexemplar / Preview 3.5.3 curl paper machine direction K MD : Measurement of curl as the reciprocal of the radius of curvature in the grain direction of paper. This means that for long grain paper, the curl of the 210 mm edge of a sheet or a group of ten sheets, is measured. 3.5.4 curl paper cross direction K CD : Measurement of curl as reciprocal of the radius of curvature in the grain direction of paper. This means that for short grain paper, the curl of the 297 mm edge of a sheet or a group of ten sheets, is measured. 3.5.5 angle of curl: The angle of curl is the angle measured between the axis of the machine direction of the paper, and the axis around which the paper is curling. It is positive if the calculated angle of the axis of curl towards machine direction is clockwise. The range is between 0 and 90. Angle of curl is expressed in degrees. 4 Principle Printability and runnability are the main functional properties and a number of characteristics related to these properties are specified. Some of these properties are also very much dependent on the machines and the required Iimits should be agreed between customer and supplier. These properties are curl before and after copy, and toner adhesion. For some properties, limiting values are now given in this European Prestandard, these are jamming, moisture content and surface resistivity. For opacity, a minimum value is given for paper to be used for duplex copying. Full tolerance values will be set for coefficient of friction (see ENV 12448), edge dust (see ENV 12282) and cutting quality at a future date as the test methods for these properties are either new, or are not frequently used for this type of paper. Until more experience is gained only target values or no limit values will be specified. Those with experience of abrasion resistance testing may use this in place of surface strength test. As this test method is very much machine dependant, low tolerance limits have been set. To fully describe the kind of papers, it is recommended to test also some other properties. These are grammage, thickness and whiteness. Provision is made to prevent harmfull contamination of machinery by paper or packaging components. 5 Sampling Samples shall be taken in accordance with EN ISO 186. For the testing of jamming, curl, moisture content and cutting quality, the samples are to be taken directly out of the package. 6 Conditioning The sample from which the specimens are taken shall be conditioned under standard atmosphere 23/50 in accordance with EN 20187, unless specifically stated otherwise. 7 Requirements The performance requirements for copy paper are listed in table 1.