Krown Porta-printer

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Template icon--Illustration.png This article requires additional photographic illustration — need photos of whole unit and remaining keyboard photos
Krown Porta-printer keyboard
Layouts Proprietary
Keyswitches Datanetics DC-50 series
Futaba MD series
Switch mount PCB mount
Keycaps Double-shot spherical

Krown Porta-printer is a series of portable teleprinters intended for use by the deaf and hard of hearing. The Porta-printer and Porta-printer II each comprised a 40% keyboard together with a miniature printer and an acoustic coupler.


The original Porta-printer and Porta-printer II keyboards used Datanetics DC-50 series switches; this was followed by a keyboard using Futaba MD series switches. Both keyboards were designed by Meryl Miller.[1]

Datanetics switch versions


The 1975 original keyboard had dark grey keycaps.

Porta-printer II

The 1977 Porta-printer II keyboard switched to ivory keycaps. The PCB below bears the legend "KROWN RESEARCH BAUDOT KEYBOARD", along with "REV E" and "BAU-EKB-1-774".

Futaba switch version

The Datanetics Porta-printer II keyboard was followed by a version with ivory/black Futaba MD series switches. The same keycap manufacturer appears to have been used, as the keycaps are identical in design to those in the previous two keyboards.

External links


  1. Correspondence with Meryl Miller, 2016-12-01–02