# 著作権法 / Copyright Act — 第四十七条の四 (Article 47-4) - Law: 著作権法 (Copyright Act), 昭和四十五年法律第四十八号 - English title "Copyright Act": Ministry of Justice translation - Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say. - Provision: 第四十七条の四 (Article 47-4)（電子計算機における著作物の利用に付随する利用等） — address `art-47-4` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/en/copyright-act/art-47-4 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/345AC0000000048/art-47-4 - Every provision below carries its address and both URLs on the line under it. - Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below. Only the Japanese as published by the government has legal effect; the text below is a copy of it. Every English rendering below is a translation and says which kind: the Ministry of Justice's translation, or this site's machine translation, whose model and date the Sources list names. They are never merged and never substituted for one another. --- ### 第四十七条の四（電子計算機における著作物の利用に付随する利用等） — (Exploitation of Works Incidental to the Exploitation of Works on a Computer) caption: Ministry of Justice translation — Japanese Law Translation Database System art-47-4 · https://japanlaw.org/en/copyright-act/art-47-4 · https://japanlaw.org/l/345AC0000000048/art-47-4 **第一項** 電子計算機における利用（情報通信の技術を利用する方法による利用を含む。以下この条において同じ。）に供される著作物は、次に掲げる場合その他これらと同様に当該著作物の電子計算機における利用を円滑又は効率的に行うために当該電子計算機における利用に付随する利用に供することを目的とする場合には、その必要と認められる限度において、いずれの方法によるかを問わず、利用することができる。ただし、当該著作物の種類及び用途並びに当該利用の態様に照らし著作権者の利益を不当に害することとなる場合は、この限りでない。 art-47-4/par-1 · https://japanlaw.org/en/copyright-act/art-47-4/par-1 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-1 A person may exploit a work that is made available to be exploited on a computer (this is inclusive of exploitation using information and communication technologies; the same applies hereinafter in this Article), in any way and to the extent considered to be necessary, in one of the following cases or in any similar case in which the purpose is to make that work available to be exploited incidentally on a computer so that the relevant work can be smoothly or efficiently exploited on that computer; provided, however, that this does not apply if the action would unreasonably prejudice the interests of the copyright owner in light of the nature or purpose of the work or the circumstances of its exploitation: Ministry of Justice translation — Japanese Law Translation Database System **一** 電子計算機において、著作物を当該著作物の複製物を用いて利用する場合又は無線通信若しくは有線電気通信の送信がされる著作物を当該送信を受信して利用する場合において、これらの利用のための当該電子計算機による情報処理の過程において、当該情報処理を円滑又は効率的に行うために当該著作物を当該電子計算機の記録媒体に記録するとき。 art-47-4/par-1/item-1 · https://japanlaw.org/en/copyright-act/art-47-4/par-1/item-1 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-1/item-1 if the person is exploiting a work on a computer using a copy of that work or is exploiting a work transmitted as a wireless communications or wired telecommunications after having received such a transmission, and if, in the course of the data processing that the computer does in order for that work to be exploited, the person records the work on the recording medium of that computer so that it can smoothly and efficiently perform that data processing; Ministry of Justice translation — Japanese Law Translation Database System **二** 自動公衆送信装置を他人の自動公衆送信の用に供することを業として行う者が、当該他人の自動公衆送信の遅滞若しくは障害を防止し、又は送信可能化された著作物の自動公衆送信を中継するための送信を効率的に行うために、これらの自動公衆送信のために送信可能化された著作物を記録媒体に記録する場合 art-47-4/par-1/item-2 · https://japanlaw.org/en/copyright-act/art-47-4/par-1/item-2 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-1/item-2 if a person that, in the course of trade, makes available an automatic public transmission server for another person to use for automatic public transmissions records a work that has been made available for automatic public transmission on a recording medium in order to prevent delays or failures of that other person's automatic public transmissions or in order to efficiently transmit a work that has been made available for transmissions so as to relay automatic public transmissions of that work; Ministry of Justice translation — Japanese Law Translation Database System **三** 情報通信の技術を利用する方法により情報を提供する場合において、当該提供を円滑又は効率的に行うための準備に必要な電子計算機による情報処理を行うことを目的として記録媒体への記録又は翻案を行うとき。 art-47-4/par-1/item-3 · https://japanlaw.org/en/copyright-act/art-47-4/par-1/item-3 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-1/item-3 if the person is providing data by a means that applies information or communication technologies, and records a work on a recording medium or adapts it in order to undertake the computerized data processing that is necessary to prepare to provide that data smoothly and efficiently. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 電子計算機における利用に供される著作物は、次に掲げる場合その他これらと同様に当該著作物の電子計算機における利用を行うことができる状態を維持し、又は当該状態に回復することを目的とする場合には、その必要と認められる限度において、いずれの方法によるかを問わず、利用することができる。ただし、当該著作物の種類及び用途並びに当該利用の態様に照らし著作権者の利益を不当に害することとなる場合は、この限りでない。 art-47-4/par-2 · https://japanlaw.org/en/copyright-act/art-47-4/par-2 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-2 A person may exploit a work that is made available to be exploited on a computer, in any way and to the extent considered to be necessary, in one of the following cases or in any similar case in which the purpose is to maintain or recover the possibility of exploiting a work on that computer; provided, however, that this does not apply if the action would unreasonably prejudice the interests of the copyright owner in light of the nature or purpose of the work or the circumstances of its exploitation: Ministry of Justice translation — Japanese Law Translation Database System **一** 記録媒体を内蔵する機器の保守又は修理を行うために当該機器に内蔵する記録媒体（以下この号及び次号において「内蔵記録媒体」という。）に記録されている著作物を当該内蔵記録媒体以外の記録媒体に一時的に記録し、及び当該保守又は修理の後に、当該内蔵記録媒体に記録する場合 art-47-4/par-2/item-1 · https://japanlaw.org/en/copyright-act/art-47-4/par-2/item-1 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-2/item-1 if, in order to perform maintenance or repairs on a device that has a recording medium built into it, the person temporarily records a work that has been recorded on the recording medium that has been built in to that device (hereinafter in this item and the following item referred to as a "built-in recording medium") on a recording medium other than the built-in recording medium, and then re-records that work onto the built-in recording medium after the maintenance or repairs; Ministry of Justice translation — Japanese Law Translation Database System **二** 記録媒体を内蔵する機器をこれと同様の機能を有する機器と交換するためにその内蔵記録媒体に記録されている著作物を当該内蔵記録媒体以外の記録媒体に一時的に記録し、及び当該同様の機能を有する機器の内蔵記録媒体に記録する場合 art-47-4/par-2/item-2 · https://japanlaw.org/en/copyright-act/art-47-4/par-2/item-2 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-2/item-2 if, in order to replace a device that has a recording medium built into it with another device with the same functions, the person temporarily records a work that has been recorded onto that device's built-in recording medium onto a recording medium other than that built-in recording medium, and then records that work on the built-in recording medium of the device with same functions; Ministry of Justice translation — Japanese Law Translation Database System **三** 自動公衆送信装置を他人の自動公衆送信の用に供することを業として行う者が、当該自動公衆送信装置により送信可能化された著作物の複製物が滅失し、又は毀損した場合の復旧の用に供するために当該著作物を記録媒体に記録するとき。 art-47-4/par-2/item-3 · https://japanlaw.org/en/copyright-act/art-47-4/par-2/item-3 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-2/item-3 if a person that, in the course of trade, makes available an automatic public transmission server for another person to use for automatic public transmissions records a work on a recording medium for use in recovery in the event that the copy of the work that has been made available for automatic public transmission by that automatic public transmission server is lost or damaged. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-47-4/par-1: この条 → 著作権法 第四十七条の四 (Article 47-4), art-47-4 — https://japanlaw.org/en/copyright-act/art-47-4 · https://japanlaw.org/l/345AC0000000048/art-47-4 - art-47-4/par-2/item-1: この号 → 著作権法 第四十七条の四第二項第一号 (Article 47-4, paragraph (2), item (i)), art-47-4/par-2/item-1 — https://japanlaw.org/en/copyright-act/art-47-4/par-2/item-1 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-2/item-1 - art-47-4/par-2/item-1: 次号 → 著作権法 第四十七条の四第二項第二号 (Article 47-4, paragraph (2), item (ii)), art-47-4/par-2/item-2 — https://japanlaw.org/en/copyright-act/art-47-4/par-2/item-2 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-2/item-2 ## Cited by 10 provisions cite this one. No official source publishes this direction. - 著作権法 第四十七条の四第一項（電子計算機における著作物の利用に付随する利用等） — https://japanlaw.org/en/copyright-act/art-47-4/par-1 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-1 - 著作権法 第四十七条の四第二項第一号（電子計算機における著作物の利用に付随する利用等） — https://japanlaw.org/en/copyright-act/art-47-4/par-2/item-1 · https://japanlaw.org/l/345AC0000000048/art-47-4/par-2/item-1 - 著作権法 第四十七条の七第一項（複製権の制限により作成された複製物の譲渡） — https://japanlaw.org/en/copyright-act/art-47-7/par-1 · https://japanlaw.org/l/345AC0000000048/art-47-7/par-1 - 著作権法 第四十九条第一項第六号（複製物の目的外使用等） — https://japanlaw.org/en/copyright-act/art-49/par-1/item-6 · https://japanlaw.org/l/345AC0000000048/art-49/par-1/item-6 - 著作権法 第四十九条第二項第六号（複製物の目的外使用等） — https://japanlaw.org/en/copyright-act/art-49/par-2/item-6 · https://japanlaw.org/l/345AC0000000048/art-49/par-2/item-6 - 著作権法 第八十六条第一項（出版権の制限） — https://japanlaw.org/en/copyright-act/art-86/par-1 · https://japanlaw.org/l/345AC0000000048/art-86/par-1 - 著作権法 第八十六条第二項第四号（出版権の制限） — https://japanlaw.org/en/copyright-act/art-86/par-2/item-4 · https://japanlaw.org/l/345AC0000000048/art-86/par-2/item-4 - 著作権法 第八十六条第三項（出版権の制限） — https://japanlaw.org/en/copyright-act/art-86/par-3 · https://japanlaw.org/l/345AC0000000048/art-86/par-3 - 著作権法 第百二条第一項（著作隣接権の制限） — https://japanlaw.org/en/copyright-act/art-102/par-1 · https://japanlaw.org/l/345AC0000000048/art-102/par-1 - 著作権法 第百二条第九項第四号（著作隣接権の制限） — https://japanlaw.org/en/copyright-act/art-102/par-9/item-4 · https://japanlaw.org/l/345AC0000000048/art-102/par-9/item-4 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 著作権法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/345AC0000000048/20260624_508AC0000000048), retrieved 2026-10-19 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Copyright Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4207/tb), retrieved 2026-10-19 - This site's parser, version 210 — 著作権法 — structure, counts, cross-references and defined terms, computed 2026-10-19