Patent EP0849702A2 successfully refreshed from Google Patents.
EP0849702A2
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EP
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Recording head, recording apparatus, recording method and recording head cartridge using the recording head
Assignee: Canon Inc
•
Filing: 1997-12-17
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Granted: —
•
Expires: 2017-12-17
Abstract
Abstract Provided are a recording head, recording apparatus, recording method, and recording head cartridge using the recording head, capable of correcting the offset of recording dot position in the direction of movement of the recording head, with a simple structure. A plurality of columns of image data corresponding to the plurality of recording devices relating to recording is held and image data corresponding to the column to be recorded is selected from this held image data and recording is thus performed, so that the driving column and recording column can be changed for each nozzle. Consequently, positional offset of dots can be adjusted for each nozzle.
Inventors
- 👤 Yoshiyuki Imanaka
- 👤 Ichiro Saito
- 👤 Teruo Ozaki
- 👤 Toshimori Miyakoshi
- 👤 Muga Mochizuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 16:11
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J2/045; B41J2/04501; B41J2/04505; B41J2/04541; B41J2/04543; B41J2/0458; B41J29/00; B41J29/38; B41J29/393; G; G06; G06K; G06K15/00; G06K15/02; G06K15/10
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
96 words
A recording head relatively scanning a
recording medium and recording a plurality of columns,
said recording head comprising: a plurality of recording devices for recording; storage means for holding image data for a plurality
of said columns corresponding with a plurality of
recording devices related to the recording; a selection circuit for selecting, from image data
corresponding to a plurality of columns stored in said
storage means, image data corresponding to the column for
which recording is to be performed; and driving means for driving said plurality of
recording devices, based on said selected image data.
Claim 2
Dependent Claim
33 words
A recording head according to Claim 1, wherein
said selection circuit comprises means for selecting
image data regarding which the recording position offset
due to driving of the recording devices has been
corrected.
Claim 3
Dependent Claim
14 words
A recording head according to Claim 1, wherein
said recording devices are heat-generating elements.
Claim 4
Dependent Claim
23 words
A recording head according to Claim 1, wherein
discharge orifices for discharging ink and liquid
channels are provided corresponding to said recording
devices.
Claim 5
Dependent Claim
34 words
A recording head according to Claim 1, wherein
said storage means comprises means for sequentially
shifting said column data corresponding to said plurality
of recording devices relating to said recording, and
holding said data.
Claim 6
Dependent Claim
123 words
A recording apparatus relatively scanning a
recording medium and recording a plurality of columns,
said recording apparatus comprising: a plurality of recording devices for recording; storage means for holding image data for a plurality
of said columns corresponding with a plurality of
recording devices related to the recording; a selection circuit for selecting, from image data
corresponding to a plurality of columns stored in said
storage means, image data corresponding to the column for
which recording is to be performed; driving means for driving said plurality of
recording devices, based on said selected image data; a recording head having driving means for driving
said plurality of recording devices based on said
selected image data; and means for supplying image signals to said head.
Claim 7
Dependent Claim
33 words
A recording apparatus according to Claim 6,
wherein said selection circuit comprises means for
selecting image data regarding which the recording
position offset due to driving of the recording devices
has been corrected.
Claim 8
Dependent Claim
14 words
A recording apparatus according to Claim 6,
wherein said recording devices are heat-generating
elements.
Claim 9
Dependent Claim
23 words
A recording apparatus according to Claim 6,
wherein discharge orifices for discharging ink and liquid
channels are provided corresponding to said recording
devices.
Claim 10
Dependent Claim
109 words
A recording method relatively scanning a
recording medium with a head having a plurality of
recording devices and recording a plurality of columns,
said recording method comprising the following steps: a step for supplying a plurality of recording
devices relating to recording with corresponding column
data; a step for storing image data for a plurality of
said columns in said storage means; a step for selecting, from image data corresponding
to a plurality of columns stored in said storage means,
image data corresponding to the column for which
recording is to be performed; and a step for driving said plurality of recording
devices based on said selected image data.
Claim 11
Dependent Claim
34 words
A recording method according to Claim 10,
wherein said selection step comprises a step for
selecting image data regarding which the recording
position offset due to driving of the recording devices
has been corrected.
Claim 12
Dependent Claim
14 words
A recording method according to Claim 10,
wherein said recording devices are heat-generating
elements.
Claim 13
Dependent Claim
21 words
A recording method according to Claim 10,
wherein ink is discharged from the discharge orifices by
driving of said recording devices.
Claim 14
Dependent Claim
34 words
A recording method according to Claim 10,
wherein said column data corresponding to said plurality
of recording devices relating to recording which has been
stored in said storage means, is sequentially shifted and
stored.
Claim 15
Dependent Claim
145 words
A recording head, comprising: an N number of heat-generating elements arrayed in
one row; an N number of driving circuits for driving said
heat-generating elements; an N-bit shift register which temporarily stores N
bits of image data; an n number of first N-bit latch circuits for
storing correction data prepared for correcting array
offset of said N number of heat-generating elements; an 2n number of second N-bit latch circuits for
holding 2n x N bits of image data stored in said N-bit
shift register; and a control circuit for performing control so that one
piece of image data held in said 2n number of second N-bit
latch circuits is selected for each of said N number
of heat-generating elements based on corrected data
stored in said first N-bit latch circuit, and said N
number of driving circuits are driven so as to perform
recording operation.
Claim 16
Dependent Claim
15 words
A recording head according to Claim 15, further
comprising EEPROM for storing said correction data.
Claim 17
Dependent Claim
12 words
A recording head according to Claim 15, wherein
said n includes "2".
Claim 18
Dependent Claim
70 words
A recording head according to Claim 17, wherein
said control circuit further comprises a selector for
selecting one piece of data from the image data held by
four of said second N-bit latch circuits corresponding
with each of an N number of heat-generating elements,
based on correction data expressed in 2 bits regarding
each of the N number of heat-generating elements stored
in two of said first N-bit latch circuit.
Claim 19
Dependent Claim
21 words
A recording head according to Claim 15, wherein
said recording head comprises an ink-jet recording head
which records by discharging ink.
Claim 20
Dependent Claim
41 words
A recording head according to Claim 15, wherein
said recording head comprises a recording head which
records by discharging ink using thermal energy, said
recording head further comprising a thermal energy
converter for generating thermal energy to apply to the
ink.
Claim 21
Dependent Claim
36 words
A recording head according to Claim 15, wherein
said 2n number of second N-bit latch circuits are
serially connected, and transfer N-bits of image data to
the neighboring circuit each time a latch clock is input.
Claim 22
Dependent Claim
34 words
A recording head according to Claim 15, wherein
said correction data is generated by mounting said
recording head to an external device, test-recording a
certain pattern, and subjecting said recorded pattern to
image processing.
Claim 23
Dependent Claim
154 words
A recording apparatus which records by using
the recording head according to either Claim 1 or Claim
15, said recording apparatus comprising; scanning means for reciprocally moving said
recording head in a first direction; transporting means for transporting recording medium
in a second direction which is the direction in which the
heat generating elements of said recording head are
arrayed and is a direction vertical to said first
direction; correction data setting means for outputting said
correction data to said n number of first N-bit latch
circuits for holding, before the recording operation; transferring means for transferring said image data
to said recording head in increments of N bits; and hold control means for performing control such that
a latch clock is transmitted for each transfer increment
by said transfer means, and such that image data
sequentially transferred to said 2n number of second N-bit
latch circuits is held in increments of N bits.
Claim 24
Dependent Claim
32 words
A recording apparatus according to Claim 23,
wherein said correction data is data which instructs
shifting of the recording position in said first
direction, in increments of said recording head heat-generating
elements.
Claim 25
Dependent Claim
27 words
A recording apparatus according to Claim 24,
wherein said shift increment is the size of one recording
dot determined by the recording resolution regarding said
first direction.
Claim 26
Dependent Claim
15 words
A recording apparatus according to Claim 23,
further comprising EEPROM for storing said correction
data.
Claim 27
Dependent Claim
77 words
A recording apparatus according to Claim 23,
further comprising: test operation control means for controlling said
recording head so as to record a certain pattern on
recording medium; reading means for reading the recorded pattern from
the recording medium upon which said pattern has been
recorded; image processing means for performing image
processing to the data read by said reading means; and
generating means for generating correction data based on
the results of said image processing means.
Claim 28
Dependent Claim
40 words
A recording apparatus according to Claim 27,
said reading means further comprising: light-emitting means for irradiating light upon said
recording medium; and light-receiving means for receiving the reflected
light of said light and converting the reflected light
into electric signals.
Claim 29
Dependent Claim
175 words
A recording control method which controls
recording by using the recording head according to the
Claims, said recording method comprising the following
steps: a correction data setting step for outputting said
correction data to said n number of first N-bit latch
circuits for holding, before the recording operation; a transferring step for transferring said image data
to said recording head in increments of N bits; a hold control step for performing control such that
a latch clock is transmitted for each transfer increment
by said transfer step, and such that image data
sequentially transferred to said 2n number of second N-bit
latch circuits is held in increments of N bits; and a recording control step for performing control so
that one piece of image data held in said 2n number of
second N-bit latch circuits is selected for each of said
N number of heat-generating elements based on correction
data stored in said n number of first N-bit latch
circuits, and said N number of driving circuits are
driven so as to perform recording operation.
Claim 30
Dependent Claim
123 words
A recording head which performs recording,
comprising: an N number of recording devices arrayed in one row; a holding circuit for holding image data for a
plurality of rows of said N number of recording devices; a memory circuit which stores correction data
relating to offset of recording dots recorded by said N
number of recording devices; and a control circuit for performing control so that one
piece of data held in said holding circuit is selected
from said plurality of rows of image data held in said
holding circuit for each of said N number of recording
devices, based on correction data stored in said memory
circuit, and said N number of recording devices are
driven so as to perform recording operation.
Claim 31
Dependent Claim
14 words
A recording head according to Claim 30, wherein
said memory circuit further comprises EEPROM.
Claim 32
Dependent Claim
21 words
A recording head according to Claim 30, wherein
said recording head comprises an ink-jet recording head
which records by discharging ink.
Claim 33
Dependent Claim
41 words
A recording head according to Claim 30, wherein
said recording head comprises a recording head which
records by discharging ink using thermal energy, said
recording head further comprising a thermal energy
converter for generating thermal energy to apply to the
ink.
Claim 34
Dependent Claim
34 words
A recording head cartridge according to the
recording heads according to any of the Claims 1, 15, or
30, comprising an ink containing for holding ink in order
to supply to said recording head.
Claim 35
Dependent Claim
57 words
A scannable recording head such as an ink jet
recording head, a recording method or apparatus for
recording using such a head wherein means are provided
for correcting for offset of a recording dot position in
a scanning direction of the recording head, for example
by selecting data from a particular storing means
determined by correction data.
References Cited (Backward Citations)
No citation records indexed.
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