Can I reuse OK Lab images in an affiliate article? | Permission depends on the image [OK Prostate Chip]

This page is based on entries from "ok-lab's diary" (https://ok-lab.hatenablog.com/), the Japanese development diary written by Mr. Okada, founder of OK Lab, a small company in Japan (Okada Comfortable Life Laboratory). Only the entries about "image reuse and affiliate rules" are summarized here, in order of publication. Past prices and sizes are as written at the time. Current prices come from the official product list (retrieved September 4, 2026). Quotations are translated from Japanese.

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Note: This page is a personal reading log by someone with no connection to the maker or the seller. It reflects the source entries as of their publication dates and makes no guarantee of accuracy or safety. The product is not a medical device; talk to a doctor about any health decision. Check the official site for current information. This page contains advertising.

In short

• Image reuse depends on where a picture appeared and who created it.
• Mr. Okada set image conditions while leaving affiliate writers free to choose their content.
• The latest rules in these entries date to October 2023; later changes are not recorded.

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About this product

The OK Prostate Chip is a small device that is placed in the urethra (the urine passage) so that it acts on the prostate; the maker sells it in several shapes, sizes and materials. It is made and sold by OK Lab (Okada Comfortable Life Laboratory), a small company in Japan, through its own online store, and prices are in Japanese yen (JPY). The maker's development diary, "ok-lab's diary", is written in Japanese. This page is an English summary of it, and every quotation is translated. OK Lab ships internationally, so readers outside Japan can order (see "Buying from outside Japan" below). Product names on this page are plain-English descriptions. The official Japanese product name is shown once in the product table so you can find the same item in the store.

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Before you read: key terms

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What happens: OK Lab image reuse and affiliate rules

The OK Prostate Chip is a device placed in the urethra (the urine passage) to act on the prostate. This topic concerns permission to reuse pictures and publish articles about the device on other websites. The diary discusses photographs, illustrations, written comments, and affiliate articles (articles connected with paid referrals). Those permissions concern material appearing on websites and book covers, including pictures supplied by artists or customers.

Book cover image permission was granted for a specific publication

In an entry published in September 2019, Mr. Okada reported a publisher's request to put a Prostate Chip illustration on a book cover. The publisher also planned to discuss the product in the book, which was scheduled for October 11.

Mr. Okada said he gladly agreed to the cover request and looked forward to the product's inclusion. The diary does not record whether the illustration appeared on the published cover.

(Source: ok-lab's diary, published September 2019)
https://ok-lab.hatenablog.com/entry/2019/09/28/140637

Illustration reuse and email publication received permission within a direct exchange

In an entry published in November 2022, an illustrator supplied drawings while discussing a device under development with Mr. Okada. Mr. Okada said he would use the illustrations in the diary and wanted an enlarged detail for its header. The illustrator allowed use of the pictures and supplied a cropped header version.

Mr. Okada also proposed publishing their email exchange, including his own replies. The illustrator agreed to publication of that correspondence. In seeking permission, Mr. Okada asked the illustrator to identify any passages that would cause problems.

(Source: ok-lab's diary, published November 2022)
https://ok-lab.hatenablog.com/entry/2022/11/19/122516

Email publication permission excluded personal information and deeply private content

In an entry published in December 2022, the illustrator discussed permission to publish comments about an unreleased design. Mr. Okada had published the comments after deciding their vague wording appeared considerate of information still being withheld. The illustrator explained that this vagueness had not been a deliberate precaution.

The illustrator initially wondered whether publication was appropriate while the new design remained unpublished, but accepted Mr. Okada's decision. The reply also offered another drawing for use and gave him discretion over how much future correspondence to publish. That permission excluded personal information and material reaching deeply into private matters.

(Source: ok-lab's diary, published December 2022)
https://ok-lab.hatenablog.com/entry/2022/12/10/123048

Image reuse rules changed when outside artists' ownership became clear

In an entry published in October 2023, Mr. Okada described a problem with his earlier broad replies about image reuse. He had realized that outside artists retained copyright (rights in their original work), even when OK Lab had permission to use their illustrations. He said this made unrestricted use by other website operators problematic.

He therefore introduced rules prepared by the company's staff for material appearing on its website and diary. In a separate passage, he wondered whose permission an illustration based on a designer's digital product model might require. Mr. Okada asked for cooperation in protecting outside creators' rights.

(Source: ok-lab's diary, published October 2023)
https://ok-lab.hatenablog.com/entry/2023/10/07/123003

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The maker's answer to OK Lab image reuse and affiliate rules

Mr. Okada distinguished independent writing from permission to reuse material created by different people.

OK Lab review questions needed direct email for a response

In an entry published in February 2020, Mr. Okada explained how he handled comments about the product. He said he tried to respond seriously to opinions sent directly to the company and sometimes included them in the diary. For public reviews, he preferred non-interference so people could write freely without feeling watched.

He said the company generally should avoid reading those public comments. Even when he read them, he said he would not comment on their content. Mr. Okada asked people with questions or feedback intended for the company to send them directly by email.

(Source: ok-lab's diary, published February 2020)
https://ok-lab.hatenablog.com/entry/2020/02/29/155031

Website image reuse permission differed from the rules for diary pictures

In an entry published in October 2023, OK Lab's staff distinguished images on the company's official website from images in the diary. Official website images were described as generally free to use, subject to the additional illustration conditions below. Diary images needed individual inquiries because some came from customers or other outside sources.

For customer-supplied images, the stated rule was that republication was generally not permitted. OK Lab asked people wanting to reuse diary images to contact the company so the source of those pictures could be checked.

(Source: ok-lab's diary, published October 2023)
https://ok-lab.hatenablog.com/entry/2023/10/07/123003

Illustration reuse required source credit and excluded cropped or altered versions

In the rules published in October 2023, illustrations carried extra conditions whichever of the company's two sites had published them. Source credit (identification of the original publication) had to include the address of the specific place the illustration came from. The rules prohibited cropping, changing the content, or otherwise processing an illustration for reuse.

OK Lab also said it generally would not contact each website it had already identified to point out problems. That statement accompanied a request for corrections to existing pages. Mr. Okada asked site operators who recognized a problem to revise their pages in line with the rules.

(Source: ok-lab's diary, published October 2023)
https://ok-lab.hatenablog.com/entry/2023/10/07/123003

Automated summary sites required manual corrections for artwork and customer photographs

In an entry published in October 2023, Mr. Okada explicitly offered free use of photographs he had taken and text he had written. He said AI-generated summary sites (websites that summarize diary material) could collect his writing and photographs without troubling him. He explained that his own writing drew on other people's expressions, which influenced his relaxed attitude toward its reuse.

His concern about artists was different: he thought automated copying could seriously affect their work. Mr. Okada asked operators using AI to manually correct their handling of artists' illustrations and customer photographs on summary sites. He asked for those corrections to follow the rules prepared by OK Lab's staff.

(Source: ok-lab's diary, published October 2023)
https://ok-lab.hatenablog.com/entry/2023/10/07/123003

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How OK Lab image reuse and affiliate rules changed over time

The latest image rules in these entries were published in October 2023. The diary does not say what the current state is.

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OK Prostate Chip products related to OK Lab image reuse and affiliate rules

No current product is directly tied to this topic.

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Common worries about OK Lab image reuse and affiliate rules

The diary answers questions about affiliate images, direct referral rewards, and interviews for product coverage.

"Can I reuse OK Lab images in affiliate articles?"

In an entry published in February 2020, an affiliate writer asked to reuse website images while crediting the source. The writer wanted to avoid infringing rights and asked whether OK Lab had its own conditions. Mr. Okada said the company contracted only with an affiliate service provider and had no contact with individual affiliates.

He said there was no article approval system: writers could choose their content, which OK Lab did not oversee. The writer replied that the explanation had resolved their questions about articles and image use. For photographs, Mr. Okada's advice at that time was to use ordinary judgment; he then considered such use acceptable.

(Source: ok-lab's diary, published February 2020)
https://ok-lab.hatenablog.com/entry/2020/02/29/155031

"Can affiliate referrals earn a direct reward from OK Lab?"

In an entry published in February 2020, a reader said their social media account had failed an affiliate service's screening. They asked whether a named referral could still earn a benefit when acquaintances bought after their recommendation. Mr. Okada explained that he had joined an affiliate service after an invitation and knew little about its functions.

He said his attention to the arrangement largely consisted of receiving periodic bills from the service. His reason for avoiding direct rewards was concern that payments would stop people writing freely in posts and blogs. Mr. Okada said he had no plans to negotiate with individual promoters or pay them directly for successful referrals.

(Source: ok-lab's diary, published February 2020)
https://ok-lab.hatenablog.com/entry/2020/02/29/155031

"Can OK Lab reviews include an interview?"

In an entry published in February 2020, a reader making online content asked about a possible interview for videos or articles. The reader described this as an idea rather than a confirmed project. Mr. Okada replied that he had previously accepted television appearances and journalists' requests because he thought they would promote the company.

He said he appreciated those opportunities and the people involved, but found the experience of being interviewed stressful. His stated feeling then was that he had little desire to accept future television appearances. The diary does not record whether the reader's proposed interview took place.

(Source: ok-lab's diary, published February 2020)
https://ok-lab.hatenablog.com/entry/2020/02/29/155031

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Buying from outside Japan

OK Lab ships internationally to countries covered by Japan Post's EMS courier service. Overseas orders are paid in advance by PayPal. Each order carries a ¥400 (about $3 at ¥156 = $1, rate as of 2026-09-04) handling fee, and EMS shipping is charged on top. These terms come from OK Lab's official sales-terms page (written here as plain text, not a link: ok-lab.net/docs/law), checked on September 7, 2026; confirm them on the official store before you order, because they can change.

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Summary of this article

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Source: ok-lab's diary (Okada Comfortable Life Laboratory). The original entries are in Japanese; quotations on this page are translated. Photos and videos are on the original entries.