Driving method for ink jet recording head

Details Driving method for ink jet recording head Driving method for ink jet recording head

1997-08-25

2000-05-09

Hartary, Joseph

Incremental printing of symbolic information

Ink jet

Controller

347 14, B41J 2045

Patent

active

060593946

ABSTRACT:
A driving method for an ink jet recording head having an electrical converting element provided to vary the volume of an ink path through which ink flows to perform gradient recording in accordance with recording information, the electrical converting element being driven by applying electrical signals including a first driving pulse for enlarging the volume of the ink path, the first driving pulse having a duration t1, and a second driving pulse having a duration t2. This method involves selecting the duration t2 of the second driving pulse and the voltage of the second driving pulse corresponding to the recording information, inputting an input pulse representing a reference timing for beginning driving of the electric conversion element, delaying the start of the first driving pulse after the input pulse until a first time period corresponding to the duration t2 passes, delaying the start of the first driving pulse after the input pulse until a first time period corresponding to the duration t2 passes, and delaying the start of the second driving pulse after the input pulse until a second predetermined time period corresponding to a sum of t1 and t2 passes.

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patent: 4897665 (1990-01-01), Aoki
patent: 5204695 (1993-04-01), Tokunaga
patent: 5221931 (1993-06-01), Moriyama
patent: 5264865 (1993-11-01), Shimoda

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