Recording apparatus for gradation recording
US5975670A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1993 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Dec 14, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/2052
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
To record a multi-valued image by an ink-jet head, an ink droplet is jetted from a recording element (nozzle) for the number of times corresponding to the density of a pixel to be reproduced. Accordingly, the pixel data to determine the number of ink-jet operation is expressed by a plurality of bits and the data of each bit are transferred to a plurality of shift registers at a time. Each shift register has storage capacity based on bit data corresponding to the number of recording elements of a recording head. When data transfer is completed, a driving signal is supplied to the recording head. The driving signals are counted and each recording element is driven based on the count result and the data stored in each register.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.