EP0444863A2
Expired / Lapsed
EP
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Method and apparatus for recording with an ink jet recording head
Assignee: Canon Inc
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Filing: 1991-02-26
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Granted: —
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Expires: 2011-02-26
Abstract
Abstract Disclosed is a recording apparatus for performing recording using an ink-jet recording head (1) for discharging an ink from an array of a plurality of orifices, including a drive unit for driving the recording head (1) on the basis of a recording signal to cause a first orifice of the plurality of orifices to discharge an ink at a first timing, and to cause a second orifice to discharge an ink at a second timing, and a moving unit for moving the recording head (1) and a recording medium (2) relative to each other by an amount corresponding to a distance between the first and second orifices during a time interval between the first and second timings by the drive unit. There is also disclosed a recording method.
Inventors
- 👤 Makoto C/O Canon Kabushiki Kaisha Shioya
- 👤 Takeshi C/O Canon Kabushiki Kaisha Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 03:23
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2121; B41J2/2128
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
113 words
A recording apparatus for performing recording using an ink-jet recording head for discharging an ink from an array of a plurality of orifices, comprising: drive means for driving said recording head on the basis of a recording signal to cause a first orifice of said plurality of orifices to discharge an ink at a first timing, and to cause a second orifice to discharge an ink at a second timing; and moving means for moving said recording head and a recording medium relative to each other by an amount corresponding to a distance between the first and second orifices during a time interval between the first and second timings by said drive means.
Claim 2
Dependent Claim
146 words
A recording apparatus for causing a recording head having an array of a plurality of orifices to discharge a plurality of ink droplets onto the same position of a recording medium, and to form a pixel having gradation, thereby performing recording, comprising: drive means for driving said recording head on the basis of a recording signal, said drive means driving each of a group of orifices used for forming the pixel of said plurality of orifices at predetermined timings to discharge an ink; and moving means for moving said recording medium and said recording head relative to each other, during a time interval between a drive timing associated with a given orifice and a drive timing associated with the next orifice, by an amount corresponding to a distance between said given orifice and said next orifice in accordance with a drive operation by said drive means.
Claim 3
Dependent Claim
127 words
A recording apparatus for causing an ink-jet recording head for discharging an ink from an array of a plurality of orifices to discharge a plurality of ink droplets onto the same position of a recording medium, thereby forming a pixel having gradation, comprising: drive means for driving said recording head on the basis of a recording signal to sequentially cause adjacent orifices of said recording head to discharge an ink at different timings; and moving means for moving said recording medium and said recording head relative to each other in an array direction of said plurality of orifices by an amount corresponding to a distance between the adjacent orifices during a drive period of the adjacent orifices in accordance with a drive operation by said drive means.
Claim 4
Dependent Claim
98 words
A recording method for performing recording using an ink-jet recording head for discharging an ink from an array of a plurality of orifices, comprising: the first step of causing a first orifice of said recording head to discharge an ink to a predetermined position of a recording medium; the second step of moving a second orifice of said recording head relative to the predetermined position of said recording medium after the first step; and the third step of causing the second orifice to discharge the ink to the predetemrined position of said recording medium after the second step.
Claim 5
Dependent Claim
28 words
An apparatus according to Claim 1 or 2, wherein said moving means performs relative movement in an array direction of said plurality of orifices of said recording head.
Claim 6
Dependent Claim
27 words
An apparatus according to Claim 1 or 2, wherein said moving means performs relative movement by rotating a rotary member around which said recording medium is wound.
Claim 7
Dependent Claim
26 words
An apparatus according to Claim 1 or 2, wherein said moving means performs relative movement by scanning a carriage on which said recording head is mounted.
Claim 8
Dependent Claim
22 words
An apparatus acording to Claim 1, wherein said drive means drives an orifice adjacent to the first orifice as the second orifice.
Claim 9
Dependent Claim
28 words
An apparatus according to Claim 1, wherein said drive means drives an orifice separated from the first orifice by a predetermined number of orifices as the second orifice.
Claim 10
Dependent Claim
29 words
An apparatus according to Claim 1, wherein the second timing by said drive means is defined before an ink discharged at the first timing soaks in said recording medium.
Claim 11
Dependent Claim
18 words
An apparatus according to Claim 1 or 2, wherein said recording head discharges inks of the same colour.
Claim 12
Dependent Claim
19 words
An apparatus according to Claim 1 or 2, wherein said recording head discharges inks of a plurality of colours.
Claim 13
Dependent Claim
57 words
An apparatus according to Claim 1, 2, or 3, wherein said recording head comprises energy generation means, arranged in correspondence with said orifices, for applying heat energy to an ink to cause a change in state, and causing said orifices to discharge the ink on the basis of the change in state, thereby forming flying liquid droplets.
Claim 14
Dependent Claim
19 words
An apparatus according to Claim 13, wherein the change in state is growth of bubbles caused by film boiling.
Claim 15
Dependent Claim
26 words
An apparatus according to Claim 1 or 2, further comprising supply means for supplying the recording signal to said drive means for driving said recording head.
Claim 16
Dependent Claim
14 words
An apparatus according to Claim 15, wherein said supply means is a host computer.
Claim 17
Dependent Claim
16 words
An apparatus according to Claim 15, wherein said supply means is a scanner having reading means.
Claim 18
Dependent Claim
14 words
An apparatus according to Claim 15, wherein said supply means is a facsimile receiver.
Claim 19
Dependent Claim
18 words
An apparatus according to Claim 2, wherein said drive means drives adjacent orifices as the group of orifices.
Claim 20
Dependent Claim
39 words
An apparatus according to Claim 2, wherein the predetermined timings by said drive means have a predetermined time interval, and the predetermined time interval is shorter than a time required for the ink in to soak said recording medium.
Claim 21
Dependent Claim
39 words
An apparatus according to Claim 2, wherein said drive means sets the number of orifices to be driven of the group of orifices in accordance with density data of the recording signal corresponding to the pixel to be formed.
Claim 22
Dependent Claim
25 words
A method according to Claim 4, wherein the relative movement is performed in an array direction of said plurality of orifices of said recording head.
Claim 23
Dependent Claim
24 words
A method according to Claim 4, wherein the relative movement is performed by rotating a rotary member around which said recording medium is wound.
Claim 24
Dependent Claim
23 words
A method according to Claim 4, wherein the relative movement is performed by scanning a carriage on which said recording head is mounted.
Claim 25
Dependent Claim
16 words
A method according to Claim 4, wherein the first orifice is adjacent to the second orifice.
Claim 26
Dependent Claim
20 words
A method according to Claim 4, wherein the first and second orifices are separated by a predetermined number of orifices.
Claim 27
Dependent Claim
25 words
A method according to Claim 4, wherein the third step is performed before the ink discharged in the first steps soaks in said recording medium.
Claim 28
Dependent Claim
54 words
A method according to Claim 4, wherein said recording head comprises energy generation means, arranged in correspondence with said orifices, for applying heat energy to an ink to cause a change in state, and causing said orifices to discharge the ink on the basis of the change in state, thereby forming flying liquid droplets.
Claim 29
Dependent Claim
19 words
A method according to Claim 28, wherein the change in state is growth of bubbles caused by film boiling.
Claim 30
Dependent Claim
65 words
An ink-jet recording apparatus which is constructed so that the same position on a recording medium can be subjected to at least two superimposed droplets from at least two different orifices in the recording head respectively, the superposition being achieved by moving the recording head and recording medium relatively to one another between the discharge of the first and the discharge of the second droplets.
References Cited (Backward Citations)
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