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ISO (International Organization para sa Standardisasyon) ay isang pandaigdigang alyansa ng mga pambansang pamantayan katawan (Mga katawan ng miyembro ng ISO). Ang pagbuo ng mga internasyonal na pamantayan ay karaniwang isinasagawa sa pamamagitan ng ISO teknikal na komite. Ang bawat institusyon ng miyembro na interesado sa isang paksa kung saan itinatag ang isang teknikal na komite ay may karapatang kumatawan sa komiteng iyon. Ang mga internasyonal na organisasyon ng pamahalaan at di pamahalaan na nakikipag ugnayan sa ISO ay kasangkot din sa gawaing ito. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrotechnical standardization.

Ang draft international standards na pinagtibay ng Technical Committee ay ipapakalat sa mga miyembro ng katawan para sa pagboto. Ang paglalathala bilang isang internasyonal na pamantayan ay nangangailangan ng pag apruba ng hindi bababa sa 75% ng mga katawan ng miyembro.

The international standard ISO 12040 was developed by the Technical Committee ISO/TC 130, Graphic Technology.

Annex A to this standard is for reference only.

ISO 12040-1997 Teknolohiya sa pag print – Assessment of light resistance of prints and printing inks using filtered xenon arc lamps

ipakilala ang
The methods described in this standard for evaluating light resistance using blue wool references are technically consistent with those given in ISO 2835. Gayunpaman, according to the latter, natural light should be used to obtain a valid evaluation of light resistance. This standard describes accelerated test methods by specifying light sources and filters for daylight simulation and by exposing test samples to artificial sunlight.

Bukod pa rito, the international standard is partially consistent with ISO 105-B02. For more information on equipment and test methods, it is recommended to refer to ISO 105-B02.

1 saklaw
This standard specifies a method for assessing the light fastness of prints and printing inks by giving

– General test requirements for printed matter;

— Special testing requirements for inks.

This standard applies to all printing substrates such as paper, Lupon, metal (sheet metal and sheet metal) and plastic film and all printing processes.

2 Mga reperensyang normatibo
The following standards contain provisions which, by reference, constitute the provisions of this International Standard. At the time of publication, the version shown is valid. All standards are subject to revision and parties to an agreement based on this international standard are encouraged to investigate the possibility of applying new versions of the following standards. IEC and ISO members maintain a register of international standards currently in force.

ISO 105-A02:1993, Textiles. Tests for colour fastness – Part A02: Greyscale for assessing colour change.

ISO 105-B02:1994, Textiles. Tests for colour fastness – Part B02: Colour fastness sa artipisyal na liwanag: xenon arc pagkupas lamp pagsubok.

ISO 2834:1981, printing inks. Preparation of standardized prints for the determination of tolerance to physical and chemical agents.

ISO 3664:1975, Pagkuha ng larawan – View the lighting conditions of colour transparencies and their reproductions.

ISO 12040-1997 Teknolohiya sa pag print – Assessment of light resistance of prints and printing inks using filtered xenon arc lamps

3 Kahulugan
For the purposes of this standard, the following definitions apply.

3.1 Light resistance of printed matter to filtered xenon arc light

Printed matter is resistant to the effects of fixed light sources (filtered xenon arcs) and is not directly affected by the weather.

3.2 Light fastness of printing ink

To assess the resistance of standard printed matter according to the instructions for printed matter in this international Standard.

Ang standard information section lamang ang pampubliko. Upang makita ang buong nilalaman, kailangan mong bilhin ang pamantayan sa pamamagitan ng mga opisyal na channel