EP0687565A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ink jet recording method and apparatus having resolution transformation capability
Assignee: Canon Inc
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Filing: 1995-06-16
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Granted: —
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Expires: 2015-06-16
Abstract
Abstract In a first recording mode for recording by discharging the ink of relatively large amount at a low resolution, liquid droplet discharging and recording conditions for the low resolution are set, while in a second recording mode for recording by discharging the ink of relatively small amount at a high resolution, a high resolution transformation process and a smoothing and thinning process are performed, and the liquid droplet discharging and recording conditions for the low resolution are set, wherein the recording control is performed in accordance with the recording mode which has been set.
Inventors
- 👤 Jiro Moriyama
- 👤 Shigeyasu Nagoshi
- 👤 Toshiharu Inui
- 👤 Yuji Akiyama
- 👤 Kiichiro Takahashi
- 👤 Fumihiro Gotoh
- 👤 Masao Kato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:22
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/485; B41J2/505; B41J2/5056; B41J2/005; B41J2/01; B41J2/21; B41J2/2132; G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102; G06K2215/00; G06K2215/0002; G06K2215/0062; G06K2215/0071; G06K2215/0082; G06K2215/0094
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
131 words
An ink jet recording method using an ink jet recording head having n resolution for performing the recording at m (>n) resolution onto a recording medium, characterized by including the steps of: setting a print mode in accordance with resolution; setting the condition for discharging ink droplets (ink volume × number) in a range not exceeding the maximum ink shot amount per unit area of said recording medium in accordance with the recording conditions including the resolution and the recording medium and the environmental conditions; creating binary data for recording from multi-value data in accordance with the resolution and the set print mode; and forming an ink droplet image of the size in accordance with the resolution on said recording medium under the set conditions using said binary data for recording.
Claim 2
Dependent Claim
34 words
An ink jet recording method according to claim 1, wherein said environmental conditions include at least one of the conditions concerning temperature information of said ink jet recording head and environmental temperature and humidity.
Claim 3
Dependent Claim
45 words
An ink jet recording method according to claim 2, wherein said recording conditions include at least one of the ink absorbing property of the recording medium, the moisture absorbing state of the recording medium, the ink characteristic, or the presence or absence of fixing means.
Claim 4
Dependent Claim
61 words
An ink jet recording method according to claim 1, wherein said set print mode includes a mode in which either of a multi color mode and a monochrome mode is set, wherein in the multi color mode, the conditions for determining the ink amount for each color are given in accordance with the maximum number of color inks to be used.
Claim 5
Dependent Claim
44 words
An ink jet recording method according to claim 1, wherein said set print mode includes a mode of emphasizing an edge portion of an image with relatively higher density by determining said edge portion, wherein the edge data is relatively increased over its surrounding.
Claim 6
Dependent Claim
33 words
An ink jet recording method according to claim 1 or 5, wherein said set print mode includes a mode of processing characters and an image differently by determining the character or the image.
Claim 7
Dependent Claim
39 words
An ink jet recording method according to any one of claims 1 to 6, wherein said recording head is a recording head for discharging the ink by the use of thermal energy, said conditions including giving the thermal energy.
Claim 8
Dependent Claim
35 words
An ink jet recording method according to claim 1, wherein said step of creating binary data for recording includes changing the gradation characteristic of output data with respect to input data in accordance with resolution.
Claim 9
Dependent Claim
47 words
An ink jet recording method according to claim 1, further comprising a step of performing a recording head stabilization process in accordance with the resolution transform prior to the recording of m resolution, upon the mode change from the n resolution recording to the m resolution recording.
Claim 10
Dependent Claim
38 words
An ink jet recording method according to claim 1, further comprising a step of modifying automatically or manually said conditions of said recording head by performing a test print onto the recording medium in the m resolution recording.
Claim 11
Dependent Claim
82 words
An ink jet recording apparatus using an ink jet recording head having n resolution for performing the recording at m (>n) resolution, comprising: means for performing a test print on said predetermined recording medium under the set conditions for discharging ink droplets (ink volume × number) in a range not exceeding the maximum ink shot amount per unit area of said predetermined recording medium in accordance with resolution; and means for modifying said set conditions in accordance with said test print image.
Claim 12
Dependent Claim
58 words
An ink jet recording apparatus using an ink jet recording head having n resolution for performing the recording at m (>n) resolution, comprising: means for performing the recording in accordance with resolution by changing a recording medium or the recording head driving condition; and means for stabilizing said recording head in accordance with the change of said resolution.
Claim 13
Dependent Claim
113 words
An ink jet recording method using an ink jet recording head having n resolution for performing the recording at m (>n) resolution, characterized by including the steps of: setting the condition for discharging ink droplets (ink volume × number) in a range not exceeding the maximum ink shot amount per unit area of a recording medium in accordance with the recording conditions including resolution and the recording medium; creating binary data for recording from multi-value data in accordance with the resolution and a set print mode; and forming the ink droplet image of the size in accordance with the resolution on said recording medium under the set conditions using binary data for recording.
Claim 14
Dependent Claim
18 words
An ink jet recording method according to claim 13, further comprising a step of inputting the multi-value data.
Claim 15
Dependent Claim
28 words
An ink jet recording method according to claim 13, further comprising a step of inputting binary data, and a step of transforming input binary data into multi-value data.
Claim 16
Dependent Claim
33 words
An ink jet recording method according to claim 13, further comprising a step of inputting binary data or multi-value data, and a step of transforming binary data amount input data into multi-value data.
Claim 17
Dependent Claim
27 words
An ink jet recording method according to claim 13, wherein said creation step further comprises transforming the level of multi-value data to be recorded to be lowered.
Claim 18
Dependent Claim
66 words
An ink jet recording method according to claim 17, wherein said creation step further includes transforming the level other than near the maximum value of multi-value data to be recorded to be lowered, leaving the level near the maximum value unchanged, or transforming it to be lowered at a smaller rate than the level other than near the maximum value of multi-value data to be recorded.
Claim 19
Dependent Claim
79 words
An ink jet recording method using an ink jet recording head having n resolution for performing the recording at m (>n) resolution on the recording medium, characterized by including the steps of: setting either a low resolution recording mode for recording at n resolution or a high resolution recording mode for recording at m resolution; and transforming the level of multi-value data to be recorded to be lowered, when said set recording mode is the high resolution recording mode.
Claim 20
Dependent Claim
76 words
An ink jet recording method according to claim 19, wherein said transformation step includes transforming the level other than near the maximum value of multi-value data to be recorded to be lowered, leaving the level near the maximum value unchanged, or transforming it to be lowered at a smaller rate than the level other than near the maximum value of multi-value data to be recorded, when said set recording mode is the high resolution recording mode.
Claim 21
Dependent Claim
109 words
An ink jet recording method according to claim 19, further comprising a step of determining whether or not data to be recorded is an edge portion of an image, wherein said transformation step includes transforming the level other than near the maximum value of multi-value data to be recorded to be lowered, leaving the level near the maximum value unchanged, or transforming it to be lowered at a smaller rate than the level other than near the maximum value of multi-value data to be recorded, when said set recording mode is the high resolution recording mode and the data to be recorded is the edge portion of said image.
Claim 22
Dependent Claim
124 words
An ink jet recording method according to claim 19, wherein further comprising a step of determining whether or not the multi-value level of the data to be recorded is at or near the maximum value, wherein said transformation step includes transforming the level of the multi-value data to be recorded to be lowered, when the multi-value level of the data to be recorded is not at or near the maximum value, leaving the level of the multi-value data to be recorded unchanged, or transforming it to be lowered at a smaller rate than the level other than near the maximum value of multi-value data to be recorded, when the multi-value level of the data to be recorded is at or near the maximum value.
Claim 23
Dependent Claim
132 words
An ink jet recording method according to claim 19, wherein further comprising a step of determining whether the data to be recorded is black or other colors, wherein said transformation step includes transforming the level other than near the maximum value of the multi-value data to be recorded to be lowered, leaving the level near the maximum value unchanged, or transforming it to be lowered at a smaller rate than the level other than near the maximum value, when the set recording mode is the high resolution recording mode and the data to be recorded is black, or transforming the level of the multi-value data to be recorded to be lowered, when said set recording mode is the high resolution recording mode, and the data to be recorded is said other colors.
Claim 24
Dependent Claim
105 words
An ink jet recording method for effecting the recording using a recording head for discharging the ink, comprising the steps of: setting either a first recording mode for recording by discharging the ink of relatively large amount at low resolution, or a second recording mode for recording by discharging the ink of relatively small amount at high resolution; transforming input data into recording data for driving said recording head in accordance with said first or second recording mode which has been set; and controlling the recording in accordance with the recording mode which has been set by said setting means, based on recording data transformed.
Claim 25
Dependent Claim
46 words
An ink jet recording apparatus according to claim 24, wherein said transformation step includes transforming the input data into high resolution data, when input data is low resolution data, and thinning a continuous area of high resolution data transformed, wherein said second recording mode is set.
Claim 26
Dependent Claim
122 words
An ink jet recording apparatus for performing the recording using a recording head for discharging the ink, comprising: setting means for setting either a first recording mode for recording by discharging the ink of relatively large amount at a low resolution, or a second recording mode for recording by discharging the ink of relatively small amount at a high resolution; transformation means for transforming input data into recording data for driving said recording head in accordance with said first or second recording mode which has been set by said setting means; and recording control means for controlling the recording in accordance with the recording mode which has been set by said setting means, based on recording data transformed by said transformation means.
Claim 27
Dependent Claim
35 words
An ink jet recording apparatus according to claim 26, wherein said transformation means transforms the input data into high resolution data, when input data is low resolution data, wherein said second recording mode is set.
Claim 28
Dependent Claim
52 words
An ink jet recording apparatus according to claim 27, wherein said transformation means adds data to the edge portion of input data of low resolution, and leaves the portion other than the edge portion unchanged, or transforms the input data into high resolution data by additionally recording the input data further twice.
Claim 29
Dependent Claim
57 words
An ink jet recording apparatus according to claim 28, wherein said transformation means adds data to the edge portion of input data of low resolution in such a way as to add data to the intermediate position between adjacent data both crosswise and diagonally, or only diagonally, in the edge portion of input data of low resolution.
Claim 30
Dependent Claim
21 words
An ink jet recording apparatus according to claim 27, wherein said transformation means transforms only non-edge portion data into thinned data.
Claim 31
Dependent Claim
21 words
An ink jet recording apparatus according to claim 28, wherein said edge portion is a peripheral section of the recording area.
Claim 32
Dependent Claim
30 words
An ink jet recording apparatus according to claim 31, wherein said edge portion is a peripheral section of the logical sum data of multi-color data when the multi-color is used.
Claim 33
Dependent Claim
33 words
An ink jet recording apparatus according to claim 26, wherein said transformation means transforms input data into thinned data, when the input data is high resolution data, wherein the first mode is set.
Claim 34
Dependent Claim
23 words
An ink jet recording apparatus according to claim 33, wherein said transformation means transforms only data of the non-edge portion into thinned data.
Claim 35
Dependent Claim
21 words
An ink jet recording apparatus according to claim 34, wherein said edge portion is a peripheral section of the recording area.
Claim 36
Dependent Claim
30 words
An ink jet recording apparatus according to claim 35, wherein said edge portion is a peripheral section of the logical sum data of multi-color data when the multi-color is used.
Claim 37
Dependent Claim
22 words
An ink jet recording apparatus according to claim 26, wherein said recording head discharges the ink by the use of thermal energy.
Claim 38
Dependent Claim
22 words
An ink jet recording apparatus according to claim 26, wherein said recording head discharges the ink by the use of mechanical energy.
Claim 39
Dependent Claim
20 words
An ink jet recording apparatus according to claim 26, wherein said recording head is capable of recording in multiple colors.
Claim 40
Dependent Claim
25 words
An ink jet recording apparatus according to claim 26, further comprising conveying means for conveying the recording medium which is recorded by said recording head.
Claim 41
Dependent Claim
19 words
An ink jet recording apparatus according to claim 26, wherein said recording apparatus is applied to a copying machine.
Claim 42
Dependent Claim
18 words
An ink jet recording apparatus according to claim 26, wherein said recording apparatus is applied to a FAX.
Claim 43
Dependent Claim
19 words
An ink jet recording apparatus according to claim 26, wherein said recording apparatus is applied to a computer terminal.
Claim 44
Dependent Claim
41 words
Apparatus or a method for recording by supplying recording material such as ink to a recording medium, wherein the amount of recording material, for example the number and/or volume of ink droplets, is controlled in accordance with a desired recording resolution.
Claim 45
Dependent Claim
36 words
Apparatus or a method for recording by supplying recording material such as ink to a recording medium wherein means are provided for performing recording at a higher resolution by changing operational conditions or the recording medium.
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