Digital printer
US3948168A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Aug 14, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/495
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printer for printing in alpha-numeric character form information from a digital source available in the form of a video-type signal representative of alpha-numeric characters corresponding to the digital information. The printer utilizes a high speed rotating spindle having at least one spiral electrical conductor on its periphery and means for forming a mark on a continuous sheet of paper in response to an electrical signal applied to the spiral conductor. The paper is moved past the spindle at a velocity proportional to, but substantially less than the tangential velocity of the spiral conductor. The video-signal is received into a double buffer memory and unloaded to the spiral conductors in phase sequence with the rotation of the spindle whereby a matrix of dots is formed on the paper in designated locations so as to produce alpha-numeric characters corresponding to the digital information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.