Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
An ink jet recording apparatus having an ink jet recording
head (7, 8) comprising: pressure generating chambers (21, 49, 65) each
comunicatively connected to a nozzle opening (24, 52, 62)
and a reservoir (26, 50, 64); pressure generating means (23, 42, 66) for pressurising the
pressure generating chambers (23, 42, 68) to eject ink
droplets therefrom; and means (23, 42, 68) for minutely vibrating a meniscus of
each nozzle opening (24, 52, 62) to such an extent as to
fail to eject an ink droplet, characterised in that the minutely vibrating means (23, 42, 69) vibrates the
meniscus present at the nozzle opening in succession for a
preset period T2 at every period T1 interval when the ink
jet recording apparatus is in a non-print operation.
Claim 2
Dependent Claim
30 words
The ink jet recording apparatus according to claim 1, in
which the meniscuses are minutely vibrated at fixed periods
T1 after a rest period longer than said fixed period T2.
Claim 3
Dependent Claim
46 words
The ink jet recording apparatus according to any one of
claims 1 to 2, in which said minutely vibrating means (23,
42, 68) causes to eject ink droplets through said nozzles
and/or to selectively minutely vibrate the meniscuses for
each print period during a print period.
Claim 4
Dependent Claim
47 words
The ink jet recording apparatus according to any one of
claims 1 to 3, in which said minutely vibrating means (23,
42, 68) sets an amplitude of the minute vibration during a
print period to be smaller than that of the meniscus during
a print rest period.
Claim 5
Dependent Claim
34 words
The ink jet recording apparatus according to any one of
claims 1 to 4, in which said minutely vibrating means
varies an amplitude of a minute vibration of the meniscus
depending on ambient temperature.
Claim 6
Dependent Claim
88 words
The ink jet recording apparatus according to any one of
claims 1 to 5, in which said minutely vibrating means
varies an amplitude of a minute vibration of the meniscus
depending on ambient temperature in such a manner that when
ambient temperature is high, an amplitude of a minute
vibration of the meniscus is set to be smaller than that at
normal temperature, and when ambient temperature is low,
the amplitude of a minute vibration of the meniscus is set
to be larger than that at normal temperature.
Claim 7
Dependent Claim
39 words
The ink jet recording apparatus according to any one of
claims 1 to 6, in which said minutely vibrating means
vibrates the meniscuses of a plural number of groups of
nozzle openings at different times in a sequential manner.
Claim 8
Dependent Claim
33 words
The ink jet recording apparatus according to any one of
claims 1 to 7, in which a minute vibration of the meniscus
is caused by said pressure generating means (23, 42, 66,
68).
Claim 9
Dependent Claim
32 words
The ink jet recording apparatus according to any one of
claims 1 to 8, in which a minute vibration of the meniscus
is caused by a piezoelectric transducer provided in said
reservoir.
Claim 10
Dependent Claim
34 words
The ink jet recording apparatus according to any one of
claims 1 to 9, in which said minutely vibrating means
varies a frequency of the minute vibration of each meniscus
depending on ambient temperature.