发明名称 INK JET RECORDING APPARATUS AND METHOD
摘要 PURPOSE:To enhance the controllabllity of the gradation of an image by selectively applying a preparatory signal not emitting a recording liquid droplet itself to an emitting means before applying an emitting signal corresponding to the arrival order of a plurality of recording liquid droplets to control the number of liquid droplets. CONSTITUTION:An electrothermal converter is used as an energy source utilized in order to emit a liquid droplet and an ink jet recording head 1 is used in the emission of the liquid droplet. The control of the electrothermal converter is performed by a CPU 100. When the increase quantity accompanied by the number of liquid droplets of the reflection density of a pixel pattern is largely changed in the recording head 1, a preparatory pulse not emitting a liquid droplet itself is applied to the electrothermal converter in emission timing. For example, the CPU 100 applies a pulse signal 451 of a degree not emitting a liquid droplet itself immediately before a fifth liquid droplet emitting pulse signal P45 is applied. By this constitution, the vol. of the fifth liquid droplet increases and the characteristic curve of reflection density can be allowed to approach a straight line.
申请公布号 JPH07195713(A) 申请公布日期 1995.08.01
申请号 JP19930350245 申请日期 1993.12.29
申请人 CANON INC 发明人 INADA GENJI;SHIOTANI MAKOTO
分类号 B41J2/05;B41J2/205;(IPC1-7):B41J2/205 主分类号 B41J2/05
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