Editing Loose leaf (section)

== Loose leaves in countries that use ISO paper standards ==
In countries that use ISO paper standards ([[ISO 216]]), loose leaves of many different sizes are sold on the market.

Japan is a major designer and manufacturer of ISO-sized loose leaf systems, and their products are widely sold in east Asia, Europe and North America, especially through online resellers. Notable companies include Kokuyo, Maruman, [[Muji|MUJI]], King Jim and Lihit Lab. MUJI has about 800 retail stores worldwide and sell their loose leaf system through their retail stores and online store.

=== Design ===
{{see also|Hole punch}}

ISO loose leaf typically has these number of holes:
{| class="wikitable"
|+"Large-size multiple-hole loose-leaf paper"
!Paper size
!Number of holes
!Note
|-
|A4
|30
|May have 4 extra-large holes for compatibility
|-
|B5
|26
| rowspan="2" |May have 2 extra-large holes for compatibility
|-
|A5
|20
|}

{| class="wikitable"
|+"4/6/9-hole loose-leaf paper"
!Paper size
!Number of holes
!Note
|-
|B5
|9
| rowspan="3" |Three holes that go together are closer to each other, and each set of holes are distant from each other
|-
|A5
| rowspan="3" |6
|-
|A6
|-
|A7
|The distances between all adjacent holes are the same
|}
For A6 and B6, there are typically "slim" (ja: スリム, surimu) versions as well.

==== Width of ruled lines ====
The most common widths of ruled lines are 6mm, 7mm and 8mm. Some manufacturers sell 9mm and 10mm ruled paper as well, to accommodate special needs related to writing [[CJK characters]], which takes up more space than alphabet-based scripts.

==== Grid and dotted loose leaf papers ====
The most common grid size is 5&nbsp;mm, while manufacturers such as MUJI sell grid loose leaf papers of 2&nbsp;mm and other grid sizes as well.

The most common dot width is 5&nbsp;mm.

==== Accessories ====
Many accessories are on the market, including punched [[zipper storage bag]], punched "today"-ruler, card organizer, etc.

=== Different countries/regions ===
ISO-sized loose leaves are most often designed and manufactured in Japan, mainland China and Taiwan.

==== Japan ====
Japan is a major contributor to the market of ISO-sized loose leaves. In Japan, sizes of loose leaves such as A4, B5, A5, A6, A7 and special sizes such as "bible size / diary size" (e.g. by Raymay DaVinci) and are sold. Notable Japanese manufacturers include Kokuyo Co., Ltd. ({{ill|コクヨ|lt=|ja|コクヨ}}) and Maruman Co. Ltd. ({{ill|マルマン (文具)|lt=|ja|マルマン (文具)}}).

Kokuyo's products sell internationally and are available in the Chinese, European and North American markets as well.

MUJI (無印良品, see {{ill|良品計画|lt=|ja|良品計画}}) has retail stores worldwide, selling products including ISO-sized loose leaf paper, even in North America where ISO sizes are not commonly used.

Both Kokuyo and Maruman manufacture pre-printed calendar loose leaf packages sold for one calendar year.

Kokuyo's loose leaves are sold all over the world, and can be found in North American and European markets.

Lihit Lab (リヒトラブ) produces a special type of loose leaf, with rectangular holes (instead of round ones) with non-standard spacings. Lihit Lab sells special ring binders to fit its loose leaves.

Maruman manufactures and sells a special size called Mini B7 (ミニ size, 86 x 128&nbsp;mm).

==== Mainland China ====
Many loose leaf products are imported from Japan to mainland China. Kokuyo sells Chinese market-specific versions of pre-printed calendar loose leaf packages.

==== Taiwan ====
SEASON (四季纸品礼品) is a major manufacturer of different sizes of loose leaves in Taiwan.{{Citation needed|date=March 2023}}