ISO 18925:2013 イメージング材料—光ディスクメディア—保管方法 | ページ 6

3.1

blister

localized delamination that looks like a bubble

3.2

compact disc

CD

optical disc format in which the information layer is located at one surface of a substrate and the data can be read by an optical beam

Note 1 to entry: CD is the subject of IEC 60908.

3.2.1

compact disc-recordable

CD-R

recordable optical disc in which information can be recorded to certain areas in the compact disc format

Note 1 to entry: Information can be recorded once and read many times.

3.2.2

compact disc read-only memory

CD-ROM

optical disc to which information is transferred during manufacture to certain areas in the compact disc format

Note 1 to entry: Information can be read many times.

Note 2 to entry: CD-ROM is the subject of ISO/IEC 10149.

3.2.3

compact disc-rewritable

CD-RW

recordable optical disc in which information can be recorded to certain areas in the compact disc format

Note 1 to entry: Information can be erased and new information recorded many times and read many times.

3.3

container

box, can, or carton used for storage and shipping of recording materials

3.4

digital versatile disc

DVD

digital video disc (deprecated)

optical disc format in which one or more information layers are located between two substrates and the data can be read by an optical beam

3.5

delamination

separation of a laminate into its constituent layers

3.6

dew point

temperature at which moisture begins to condense on a surface

Note 1 to entry: See relative humidity (3.16) .

3.7

enclosure

folder, envelope, sleeve, or clam shell intended for physical protection against mechanical damage

3.8

extended-term storage conditions

storage conditions suitable for the preservation of recorded information having permanent value

3.9

fire-protective storage

facilities designed to protect records against excessive temperatures, water and other fire-fighting agents, and steam developed by insulation of safes or caused by the extinguishing of fires and collapsing structures

3.10

insulated record container

storage box designed to withstand elevated temperatures and conforming to national standards and regulations

3.11

isoperm lines

lines of constant life plotted as a function of temperature and relative humidity

3.12

life expectancy

LE

length of time that information is predicted to be retrieved in a system at 23 °C and 50 % relative humidity (RH)

3.13

magnetic field intensity

level of the magnetic field at a point in space

3.14

medium

material on which the information is recorded

3.15

MO disc

optical disc in which the information is recorded using magneto-optical technology in some specified format

Note 1 to entry: Information can be recorded, read many times, and overwritten many times.

3.16

relative humidity

RH

ratio, defined as a percentage, of the existing partial vapour pressure of water to the vapour pressure at saturation

Note 1 to entry: It is usually, but not always, equal to the percentage of the amount of moisture in the air to that at saturation.

3.17

storage environment

conditions for storing materials, i.e. temperature, relative humidity, cleanliness of facilities, and atmospheric pollutants

3.18

storage housing

physical structure supporting materials and their enclosures

Note 1 to entry: It can consist of drawers, racks, shelves, or cabinets.

3.19

system

combination of material, hardware, software, and documentation necessary for recording and/or retrieving information

3.20

WORM disc

optical disc in which the data in specified areas can be written only once and read multiple times by an optical beam