Liquid jet recording method
US4339762A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/034
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A liquid jet recording method capable of recording gradation comprises (a) filling with a liquid a conduit having, at the end, an orifice for ejecting and projecting a liquid droplet to a predetermined direction, said conduit being provided with a heat actuating portion generating a force for ejecting the liquid droplet by applying heat energy to the liquid to cause an abrupt state change, the heat actuating portion including an electrothermal transducer having a heat generating portion which has such a structure that the degree of heat supply is different from position to position on the heating surface, and (b) controlling the strength of an input electric signal corresponding to the gradation of an image to be recorded, thereby controlling the distribution of degree of heat supplying at the heating surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.