Ink jet recording apparatus for divisionally driving a recording head with a plurality of ink jet orifices grouped into blocks
US5594478A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/111
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An ink jet recording apparatus includes a recording head with a number of ink ejection orifices for ejecting ink. The number of ink ejection orifices are grouped into N blocks which can be driven simultaneously, are arranged in an eject orifice array and perform recording by divisionally driving the N blocks. A recording medium and the recording head are moved relative to each other by a conveying length obtained by equally dividing an ejection orifice array of the recording head into n parts. The recording apparatus masks a signal to be recorded such that 1/n dots, where n<N, of all dots to be formed on an area of the recording medium having a width equal to the conveying length may be formed by one scan of the recording head. The recording head is driven, based on the signal masked by the masking means, and performs recording in units of lengths of n equally divided areas of the recording head by using n equally divided different sections of the ejection orifice array by repeating a scan operation n times. The number of times for divisional driving for the blocks of the recording head for ejecting the ink is set to be N divided by n, and drive timings of divisional driving for bl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.