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E-readers have been around for many years now, arguably becoming mainstream with the release of the Amazon Kindle in 2007. The form factor of this generation of e-readers embraced a compact form factor, possibly due to prioritising affordability and accessibility. For the typical reader that predominantly consumes novels, the compact nature of the device was advantageous. Light in the hand and easy to transport, the devices were perfect for leisurely reading at home or on the go.
Unfortunately the small size made it inadequate for consuming technical literature or more visually rich content that didn't rely on colour reproduction. This changed with the release of the Sony DPTS1 in late 2013. Sony had pioneered the compact e-readers via the Sony Libre (later Reader) product line in 2004 and the company was intent on pushing the envelope in the eInk segment again, almost a decade later. Unlike the Reader products, the Digital Paper series was aimed squarely at the business and academic segments. Featuring an A4 size (13.3") display, with support for writing somewhat accurately on-screen using the bundled stylus, it made consuming all types of literature possible. The latest model released in the series was the DPT-RP1 model, a direct successor to DPT-S1 with a higher resolution display.
Sony unfortunately didn't make it easy for consumers to buy one, however, preferring direct bulk sales channels. European consumers were particularly hard done, with no retail stores selling it - unlike in North America and Japan. I was lucky to grab one in the Ginza Sony store while on a trip to Tokyo, where it was showcased along with its smaller 10" sibling, the DPT-CP1.
Thickness of DPT-RP1 compared with a brochure
Immediately striking is how unassuming the device is - atypical of the modern design trends that promote attention seeking. A refreshing simplicity. Two buttons, a textured capacitive touchscreen and a stylus are packed into a 349 gram package. It feels like a faithful reproduction of a regular paper based reading and annotation experience, with a key enhancement: search support across the document and custom annotations. This makes retrieving references or looking up an appendix a breeze.
Search functionality in action
The software package that accompanies the device mirrors the hardware's simplicity, possibly to its detriment depending on who you ask. What you'd expect from it is there: document management wirelessly or wired and screen capture (continuous or single snapshot). A dependable and adequate feature set, but can leave wanting more advanced functionality, like support for OCR of handwritten notes and document workflow integrations. Thankfully motivated individuals have reverse-engineered the device's protocol and developed libraries to interface with it, enabling advanced workflows. I found the dpt-rp1-py (Python based) project by Jan-Gerd Tenberge to be reliable.
dpd-rp1-py by Jan-Gerd Tenberge
One major downside of the device is related to the stylus. As the screen is textured to simulate paper, the friction wears down the nibs of the stylus. Replacement nibs aren't easy to find nor are they cheap. For a 10-pack, the MSRP is $20. Good luck finding it at that price now, as the Digital Paper series is discontinued. Online sellers can be found asking upwards of $50 for the same set of tips.
The DPT-RP1 is a milestone in the history of eInk devices. It is a shame that Sony continued the tradition (as with the Reader series) of making a leap forward and being unable to champion the segment into the future. Competitors like reMarkable have stepped up to offer a 10" tablet of which competes with the DPT-CP1. Perhaps one day we will see an A4 sized variant similar to the DPT-RP1. Until then, if you can find a DPT-RP1 for a reasonable price, you're unlikely to regret it - as long as you don't intend to write a lot.
Date: 5th March 2021
