Method and apparatus for driving a solid scan type recording head
US4918462A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1989 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Apr 13, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1247
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for driving a solid scan type recording head having a plurality of elements having a function such as light emission, exothermic and discharge, includes the following procedures. A plurality of pulse signals different from each other in one of a frequency and duty ratio thereof over a fixed time, are generated depending on a difference in characteristics of the plurality of elements. Each of the pulse signals varies in level so as to rise the power level of the related element in a rise response characteristic thereof before the power level of the related element completely falls to zero in accordance with a fall response characteristic thereof. Then one of the plurality of pulse signals for each of the plurality of elements is selected depending on the characteristic of the element of concern. Thereby, a driving signal for each of the plurality of elements is generated from the corresponding selected one of the plurality of pulse signals and corresponding image data. The driving signal is supplied to the corresponding one of the elements. An apparatus for driving a solid scan type recording head is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.