EP0292292A2
Expired / Lapsed
EP
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Image processing apparatus
Assignee: Canon Inc
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Filing: 1988-05-19
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Granted: —
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Expires: 2008-05-19
Abstract
Abstract There is provided an image processing apparatus for recording image data by the ink jet recording method. This apparatus comprises: an ink jet nozzle (6) to eject an ink droplet (7) and deposit onto a paper; a controller to control the ink jet nozzle so as to enable the recording interval (tx) when the ink droplet is deposited to the same position on the paper a plurality of times; a supply circuit to supply image data to the ink jet nozzle; and a distinction circuit to discriminate whether the input image data is the half tone image or the diagram image, wherein this controller controls the recording interval in accordance with the result of the discrimination. With this apparatus, by superposing the recording dots to the same position on the paper in accordance with the binary image data, the gradations and graininess can be improved by a simple structure.
Inventors
- 👤 Makoto Takaoka
- 👤 Susumu Sugiura
- 👤 Kentaro Matsumoto
- 👤 Toyokazu Uda
- 👤 Masami Fukumoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 16:09
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40025; H04N1/40031; H04N1/405; H04N1/4055; H04N1/4057
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
49 words
A recording apparatus comprising: a) means for depositing a recording agent onto a medium; and b) means for controlling said depositing means so as to enable a recording interval to be varied when said recording agent is deposited to a same position on said medium a plurality of times.
Claim 2
Dependent Claim
49 words
A recording apparatus comprising: a) means for depositing a recording agent onto a medium; and b) means for controlling said depositing means so as to enable a recording interval to be varied when said recording agent is deposited to a same position on said medium a plurality of times.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1, wherein said depositing means is means for depositing an ink onto a paper.
Claim 4
Dependent Claim
18 words
An apparatus according to claim 1, further comprising: c) means for supplying image data to said depositing means.
Claim 5
Dependent Claim
38 words
An apparatus according to claim 3, further comprising: d) means for discriminating characteristics of said image data, and wherein said control means controls the recording interval in accordance with the result of the discrimination of said discriminating means.
Claim 6
Dependent Claim
76 words
An apparatus according to claim 1, wherein said control means has a first control mode to deposit at a recording interval so as to change a size of dot which is formed onto the medium by said recording agent when the recording agent is deposited to the same position on the medium a plurality of times, and a second control mode to deposit at a recording interval so as not to change the size of dot.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 1, wherein in said second control mode, said recording agent deposits at a sufficient recording interval so that said recording agent permeates the medium.
Claim 8
Dependent Claim
58 words
A recording method comprising: a) a first step of depositing a recording agent to a predetermined position on a medium; and b) a second step of depositing the recording agent to said predetermined position at a recording interval so as not to substantially change a size of dot which is formed on the medium by said recording agent.
Claim 9
Dependent Claim
58 words
A recording method comprising: a) a first step of depositing a recording agent to a predetermined position on a medium; and b) a second step of depositing the recording agent to said predetermined position at a recording interval so as not to substantially change a size of dot which is formed on the medium by said recording agent.
Claim 10
Dependent Claim
35 words
A method according to claim 7, wherein the recording agent which is deposited in said first step and the recording agent which is deposited in said second step are the same kind of recording agents.
Claim 11
Dependent Claim
18 words
A method according to claim 7, further comprising: c) a step of repeating said first and second steps.
Claim 12
Dependent Claim
17 words
A method according to claim 7, wherein said recording agent is a liquid having a predetermined concentration.
Claim 13
Dependent Claim
17 words
An apparatus according to claim 10, wherein said medium is a medium into which said liquid permeates.
Claim 14
Dependent Claim
12 words
A method according to claim 11, wherein said medium is a paper.
Claim 15
Independent Claim
73 words
An apparatus comprising a) means for supplying multi-value image data; b) means for developing the multi-value image data supplied by said supplying means into binary data; c) means for depositing a recording agent onto a medium in accordance with the binary data developed by said developing means; and d) control means for controlling said developing means so as to develop the same multi-value image data into the binary data a plurality of times.
Claim 16
Independent Claim
73 words
An apparatus comprising a) means for supplying multi-value image data; b) means for developing the multi-value image data supplied by said supplying means into binary data; c) means for depositing a recording agent onto a medium in accordance with the binary data developed by said developing means; and d) control means for controlling said developing means so as to develop the same multi-value image data into the binary data a plurality of times.
Claim 17
Dependent Claim
28 words
An apparatus according to claim 13, wherein said control means develops the multi-value image data into the binary data a plurality of times by using different threshold values.
Claim 18
Dependent Claim
46 words
An apparatus according to claim 13, wherein said depositing means superposes and deposits the recording agent to the same position on the medium when depositing the recording agent onto the medium in accordance with the binary data developed by said developing means a plurality of times.
Claim 19
Dependent Claim
48 words
An apparatus according to claim 13, wherein said developing means includes: a) means for storing a plurality of threshold value matrices; and b) means for sequentially comparing said plurality of threshold value matrices stored in said memory means with the multi-value image data supplied by said supply means.
Claim 20
Dependent Claim
17 words
An apparatus according to claim 13, wherein said recording agent is a liquid having a predetermined concentration.
Claim 21
Dependent Claim
17 words
An apparatus according to claim 17, wherein said medium is a medium into which said liquid permeates.
Claim 22
Dependent Claim
12 words
An apparatus according to claim 18, wherein said medium is a paper.
Claim 23
Dependent Claim
65 words
A dot-matrix image recording apparatus, comprising: means for dither-processing multi-value image data; and means for recording dots at any of a plurality of possible dot locations in response to the dither-processed data; characterised in that the apparatus is operable to repeat the recording of a dot for any of said possible dot locations in dependence upon the image intensity represented by the input image data.
Claim 24
Dependent Claim
65 words
A dot-matrix image recording apparatus, comprising: means for dither-processing multi-value image data; and means for recording dots at any of a plurality of possible dot locations in response to the dither-processed data; characterised in that the apparatus is operable to repeat the recording of a dot for any of said possible dot locations in dependence upon the image intensity represented by the input image data.
References Cited (Backward Citations)
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