Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1995-06-07
1997-01-14
Tran, Huan H.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 43, 347 9, 347 12, 347 13, 347 14, 347 15, B41J 201, B41J 2145
Patent
active
055944787
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
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 blocks of the recording head for ejecting the ink are the same.
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Akiyama Yuji
Arai Atsushi
Hirabayashi Hiromitsu
Matsubara Miyuki
Murata Takayuki
Canon Kabushiki Kaisha
Tran Huan H.
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