Electrothermal printing unit
US3989131A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1975 |
| Grant date | Nov 2, 1976 |
| Priority date | — |
| Expiry date | Feb 4, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/345
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An electrothermic printing unit for writing dot matrix characters on a printing line of a recording medium by means of an electrothermal printing head which is continuously movable along the printing line during the printing operation and having a column of resistive printing elements therein disposed transverse to the printing line and selectively electrically heatable in timed relation with the movement of the head characterized in that a thermosensitive inking element having a support of heat permeable material covered by a coating of material transferable for the combined action of head and pressure is interposed between the head and the recording medium, pressure means being provided for pressing said printing elements against said support and said coating against said recording medium during the movement of the head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.