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Ink jet recording apparatus and method using plural types of ink
Assignee: Canon Inc
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Filing: 1995-10-24
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Granted: —
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Expires: 2015-10-24
Abstract
Abstract An image is recorded on a recording medium by recording dots of a black ink and a color ink discharged onto the recording medium from a recording head. A boundary proximity-degree detecting circuit detects the degree of positional proximity, i.e., closeness, between the recording dots of the black ink and the recording dots of the color ink at the boundary between these dots. A dot substituting circuit performs, in accordance with the detected degree of positional proximity, substitution of the black pixels with recording dots of a color ink at the boundary. Thus, pixels of the image to be recorded are replaced with recording dots of a color ink by an extent which is determined based on the degree of positional proximity between the pixels of the different colors. A sharp black image can be obtained with minimized color mixing at the boundary between the black image region and the color region, regardless of the degree of positional proximity between these regions.
Inventors
- 👤 Daigoro Kanematsu
- 👤 Naoji Otsuka
- 👤 Kazuhiro Nakata
- 👤 Kentaro Yano
- 👤 Takashi Kasahara
- 👤 Kiichiro Takahashi
- 👤 Osamu Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 12:39
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2132; G06K2215/00; G06K2215/0082; G06K2215/0094
Claims Analysis
Total Claims: 76
Claim 1
Independent Claim
122 words
An ink jet recording apparatus in which plural types of ink are discharged from a recording head onto a recording medium so as to form record dots, thereby recording an image represented by image pixels, said apparatus comprising: boundary proximity-degree detecting means for detecting a degree of positional proximity between the image pixels corresponding to record dots to be formed by different types of ink at a boundary between the image pixels; and substituting means for substituting image pixels corresponding to record dots to be formed with one type of ink with substitute pixels corresponding to record dots to be formed with a different type of ink in accordance with the degree of positional proximity detected by said boundary proximity-degree detecting means.
Claim 2
Dependent Claim
107 words
An ink jet recording apparatus according to Claim 1, wherein said boundary proximity-degree detecting means sets a weight coefficient on each of the image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given image pixel, and counts, while performing correction based on the weight coefficients set on the image pixels, the pixels corresponding to record dots to be formed by the different type of ink in the pixel region, thereby detecting the degree of positional proximity of the image pixels corresponding to record dots to be formed by the different ink with respect to the given pixel.
Claim 3
Dependent Claim
89 words
An ink jet recording apparatus according to Claim 2, wherein said substituting means ranks the image pixels corresponding to record dots to be formed with a given color ink into at least two ranks according to the degree of positional proximity, and performs the substitution separately for each of the ranks so as to substitute the image pixels corresponding to record dots of the given color with substitute pixels corresponding to record dots of a different color ink at a proportion which is predetermined for each of the ranks.
Claim 4
Dependent Claim
107 words
An ink jet recording apparatus according to Claim 3, further comprising: a plurality of substitution mask patterns prepared for each of the colors of image pixels which are to be subjected to the substitution performed by said substituting means, the number of the mask patterns being at least equal to the number of the ranks; logical product means for determining the logical product of the substitution mask pattern of a given ink data for each of the ranks and dot substitution positions; and logical sum means for determining the logical sum of the logical products of the dot substitution positions obtained for the at least two ranks.
Claim 5
Dependent Claim
159 words
An ink jet recording apparatus according to Claim 1, wherein said boundary proximity-degree detecting means sets, for each of the different types of ink, a weight coefficient on each of image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given pixel, and counts, while performing correction based on the weight coefficients set on the image pixels, the image pixels corresponding to record dots to be formed by each of different types of ink in the pixel region, thereby detecting the degree of positional proximity of the image pixels corresponding to the record dots to be formed by each different type of ink with respect to the given pixel, said boundary proximity-degree detecting means further determines the sum of the positional proximity degrees obtained for the plurality of types of ink, thereby determining the positional proximity degrees of the plurality of types of ink with respect to the given pixel.
Claim 6
Dependent Claim
60 words
An ink jet recording apparatus according to Claim 1, further comprising data receiving means for receiving binary record data indicative of presence or absence of record signals representing each of the image pixels, wherein said boundary proximity-degree detecting means and said substituting means perform the detection and the substitution on the binary record data received by said data receiving means.
Claim 7
Dependent Claim
80 words
An ink jet recording apparatus according to Claim 1, further comprising ranking means for ranking ink pixel data into a plurality of ranks based on the positional proximity degree and pixel position detecting means for detecting positions of image pixels for the ink pixel data of each rank, said substituting means performing the substitution of the image pixels by using a mask pattern of a predetermined area proportion only when said position detecting means has detected an image pixel position.
Claim 8
Dependent Claim
118 words
An ink jet recording apparatus according to Claim 7, wherein said boundary proximity-degree detecting means sets a weight coefficient on each of image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given image pixel, divides the pixel region into at least two sub-regions, and counts, while performing correction based on the weight coefficients set on the image pixels, the image pixels corresponding to the record dots to be formed by the different type of ink in each sub-region, thereby detecting the degree of positional proximity of the image pixels corresponding to the record dots to be formed by the different ink with respect to the given image pixel.
Claim 9
Dependent Claim
42 words
An ink jet recording apparatus according to Claim 8, wherein said boundary proximity-degree detecting means determines, as the degree of positional proximity with respect to the given pixel, the greatest of the boundary proximity degrees obtained for the at least two sub-regions.
Claim 10
Dependent Claim
48 words
An ink jet recording apparatus according to Claim 8, wherein said boundary proximity-degree detecting means determines, as the degree of positional proximity with respect to the given pixel, the difference between the greatest and the smallest of the boundary proximity degrees obtained for the at least two sub-regions.
Claim 11
Dependent Claim
119 words
An ink jet recording apparatus according to Claim 1, further comprising akin ink dot proximity degree detecting means for detecting the degree of positional proximity between image pixels corresponding to record dots to be formed by the same type of ink, wherein said substituting means performs the substitution of the substitute image pixels to be formed with record dots of the different ink based on both the degree of positional proximity between image pixels corresponding to record dots of different types of ink detected by said boundary proximity-degree detecting means and the degree of positional proximity between image pixels corresponding to record dots of the same type of ink detected by said akin ink dot proximity degree detecting means.
Claim 12
Dependent Claim
94 words
An ink jet recording apparatus according to Claim 11, wherein said akin ink dot proximity degree detecting means counts, within an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given image pixel, the image pixels corresponding to record dots to be formed of the same type of ink as a record dot for given image pixel, thereby detecting the degree of positional proximity of image pixels to be formed as record dots of the same type of ink with respect to a record dot for given image pixel.
Claim 13
Dependent Claim
63 words
An ink jet recording apparatus according to Claim 11, wherein said substituting means performs the substitution with substitute pixels corresponding to record dots formed by the different type of ink in accordance with the degree of positional proximity of image pixels to be formed as record dots of the same type of ink determined by said akin ink dot proximity degree detecting means.
Claim 14
Dependent Claim
22 words
An ink jet recording apparatus according to Claim 1, further comprising said recording head, wherein said recording head discharges inks utilizing heat.
Claim 15
Dependent Claim
24 words
An ink jet recording apparatus according to Claim 1, further comprising mounting means, wherein said recording head is interchangeably mounted on said mounting means.
Claim 16
Dependent Claim
18 words
An ink jet recording apparatus according to Claim 1, further comprising a carriage for carrying said recording head.
Claim 17
Dependent Claim
29 words
An ink jet recording apparatus according to Claim 1, further comprising conveying means for conveying a recording medium on which recording is to be performed by said recording head.
Claim 18
Dependent Claim
19 words
An ink jet recording apparatus according to Claim 1, wherein said recording apparatus is incorporated in a copying apparatus.
Claim 19
Dependent Claim
19 words
An ink jet recording apparatus according to Claim 1, wherein said recording apparatus is incorporated in a facsimile apparatus.
Claim 20
Dependent Claim
19 words
An ink jet recording apparatus according to Claim 1, wherein said recording apparatus is incorporated in a computer terminal.
Claim 21
Dependent Claim
138 words
An ink jet recording method in which plural types of ink are discharged from a recording head onto a recording medium so as to form record dots, thereby recording an image represented by image pixels, said method comprising the steps of: detecting a degree of positional proximity between the image pixels corresponding to record dots to be formed by different types of ink at a boundary between the image pixels; substituting image pixels corresponding to record dots to be formed with one type of ink with substitute pixels corresponding to record dots to be formed with a different type of ink, in accordance with the degree of positional proximity detected in said step of detecting the degree of positional proximity; and discharging inks in accordance with the image pixels and the substitute pixels after said step of substituting.
Claim 22
Dependent Claim
111 words
An ink jet recording method according to Claim 21, wherein the step of detecting the positional proximity degree includes setting a weight coefficient on each of the image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given pixel, and counting, while performing correction based on the weight coefficients set on the image pixels, the pixels corresponding to record dots to be formed by the different type of ink in the pixel region, thereby detecting the degree of positional proximity of the image pixels corresponding to the record dots to be formed by the different ink with respect to the given pixel.
Claim 23
Dependent Claim
91 words
An ink jet recording method according to Claim 22, wherein said substituting step includes ranking the image pixels corresponding to record dots to be formed with a given color ink into at least two ranks according to the degree of positional proximity, and performing the substitution separately for each of the ranks so as to substitute the image pixels corresponding to the record dots of the given color with substitute pixels corresponding to record dots of a different color ink at a proportion which is predetermined for each of the ranks.
Claim 24
Dependent Claim
158 words
An ink jet recording method according to Claim 21, wherein said step of detecting the positional proximity degree includes setting, for each of the different types of ink, a weight coefficient on each of image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given pixel, counting, while performing correction based on the weight coefficients set on the image pixels, the image pixels corresponding to the record dots to be formed by each of different types of ink in the pixel region, thereby detecting the degree of positional proximity of the image pixels corresponding to the record dots to be formed by each different type of ink with respect to the given pixel; and determining the sum of the positional proximity degrees obtained for the plurality of types of ink, thereby determining the positional proximity degrees of the plurality of types of ink with respect to the given pixel.
Claim 25
Dependent Claim
59 words
An ink jet recording method according to Claim 21, further comprising the step of receiving binary record data indicative of presence or absence of record signals representing each of the image pixels, wherein said boundary proximity-degree detecting step and said substituting step perform the detection and the substitution on the binary record data received in said data receiving step.
Claim 26
Dependent Claim
76 words
An ink jet recording method according to Claim 21, further comprising the steps of ranking ink pixel data into a plurality of ranks based on the positional proximity degree, and detecting positions of image pixels for the ink pixel data of each rank, said substituting step performing the substitution of the image pixels by using a mask pattern of a predetermined area proportion only when presence of an image pixel is detected in said detecting step.
Claim 27
Dependent Claim
121 words
An ink jet recording method according to Claim 26, wherein said step of detecting the positional proximity degree includes setting a weight coefficient on each of image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given image pixel, dividing the pixel region into at least two sub-regions, and counting, while performing correction based on the weight coefficients set on the image pixels, image pixels of the record dots to be formed by the different type of ink in each sub-region, thereby detecting the degree of positional proximity of the image pixels corresponding to the record dots to be formed by the different type of ink with respect to the given pixel.
Claim 28
Dependent Claim
46 words
An ink jet recording method according to Claim 27, wherein said step of detecting the positional proximity degree includes determining, as the degree of positional proximity with respect to the given pixel, the greatest of the boundary proximity degrees obtained for the at least two sub-regions.
Claim 29
Dependent Claim
52 words
An ink jet recording method according to Claim 27, wherein said step of detecting the positional proximity degree includes determining, as the degree of positional proximity with respect to the given pixel, the difference between the greatest and the smallest of the boundary proximity degrees obtained for the at least two sub-regions.
Claim 30
Dependent Claim
124 words
An ink jet recording method according to Claim 21, further comprising the step of detecting the degree of positional proximity between record pixels to be formed as record dots of the same type of ink, wherein said substituting step performs the substitution of the record pixels with pixels indicating record dots of the different type of ink based on both the degree of positional proximity between record pixels to be formed as record dots of the different types of ink detected in said step of detecting boundary proximity degree and the degree of positional proximity between record dots of the same type of ink detected in said step of detecting the degree of positional proximity between record dots of the same type of ink.
Claim 31
Dependent Claim
108 words
An ink jet recording method according to Claim 30, wherein said step of detecting the degree of positional proximity between record pixels to be formed as record dots of the same type of ink includes counting, within an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given pixel, the record pixels to be formed as record dots of the same type of ink as a record dot indicated by the given pixel, thereby detecting the degree of positional proximity of the record pixels to be formed as the record dots of the same type of ink with respect to the given pixel.
Claim 32
Dependent Claim
43 words
An ink jet recording method according to Claim 30, wherein said substituting step performs substitution with the different type of ink in accordance with the degree of positional proximity of record pixels to be formed as dots of the same type of ink.
Claim 33
Dependent Claim
108 words
A record data processing method for recording an image based on image pixels by forming corresponding record dots with plural types of ink discharged from a recording head, said method comprising the steps of: detecting a degree of positional proximity between image pixels corresponding to record dots to be formed by different types of ink at a boundary between the image pixels; and substituting image pixels corresponding to record dots to be formed with one type of ink with substitute image pixels corresponding to record dots to be formed with a different type of ink, in accordance with the degree of positional proximity detected in said detecting step.
Claim 34
Dependent Claim
115 words
A record data processing method according to Claim 33, wherein the step of detecting the boundary proximity degree includes setting a weight coefficient on each of image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given image pixel, and counting, while performing correction based on the weight coefficients set on the image pixels, the image pixels corresponding to record dots to be formed by the different type of ink in the pixel region, thereby detecting the degree of positional proximity of the image pixels corresponding to the record dots to be formed by the different type of ink with respect to the given image pixel.
Claim 35
Dependent Claim
81 words
A record data processing method according to Claim 34, wherein said substituting step includes ranking the image pixels of a given color into at least two ranks according to the degree of positional proximity, and performing the substitution separately for each of the ranks so as to substitute the image pixels of the given color with substitute image pixels representing record dots to be formed a different type of ink at a proportion which is predetermined for each of the ranks.
Claim 36
Dependent Claim
157 words
A record data processing method according to Claim 33, wherein said step of detecting the positional proximity degree includes setting, for each of the plural types of ink, a weight coefficient on each of the image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given image pixel, counting, while performing correction based on the weight coefficients set on the image pixels, image pixels corresponding to the record dots formed by each type of ink in the pixel region, thereby detecting the degree of positional proximity of the image pixels corresponding to the record dots to be formed by each of types of ink with respect to the given image pixel, and determining the sum of the positional proximity degrees obtained for the plurality of types of ink, thereby determining the positional proximity degrees of the plurality of types of ink with respect to the given image pixel.
Claim 37
Dependent Claim
77 words
A record data processing method according to Claim 33, further comprising the steps of ranking image pixel data into a plurality of ranks based on the boundary proximity degree, and detecting positions of image pixels for the image pixel data of each rank, wherein said substituting step performs the substitution of the image pixels by using a mask pattern of a predetermined area proportion only when presence of an image pixel is detected in said detecting step.
Claim 38
Dependent Claim
117 words
A record data processing method according to Claim 37, wherein said step of detecting the positional proximity degree includes setting a weight coefficient on each of image pixels contained in an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given image pixel, dividing the pixel region into at least two sub-regions, and counting, while performing correction based on the weight coefficients set on the image pixels, the record dots to be formed by a different type of ink in each sub-region, thereby detecting the degree of positional proximity of the image pixels corresponding to the record dots to be formed by the different ink with respect to the given image pixel.
Claim 39
Dependent Claim
47 words
A record data processing method according to Claim 38, wherein said step of detecting the positional proximity degree includes determining, as the degree of positional proximity with respect to the given image pixel, the greatest of the positional proximity degrees obtained for the at least two sub-regions.
Claim 40
Dependent Claim
53 words
A record data processing method according to Claim 38, wherein said step of detecting the positional proximity degree includes determining, as the degree of positional proximity with respect to the given image pixel, the difference between the greatest and the smallest of the positional proximity degrees obtained for the at least two sub-regions.
Claim 41
Dependent Claim
132 words
A record data processing method according to Claim 33, further comprising the step of detecting the degree of positional proximity between image pixels corresponding to record dots to be formed of the same type of ink, wherein said substituting step performs the substitution of the image pixels with substitute image pixels corresponding to record dots of the different ink based on both the degree of positional proximity between image pixels corresponding to record dots of different types of ink detected in said step of detecting the positional proximity degree and the degree of positional proximity between image pixels corresponding to record dots of the same type of ink detected in said step of detecting the degree of positional proximity between image pixels corresponding to record dots of the same type of ink.
Claim 42
Dependent Claim
109 words
A record data processing method according to Claim 41, wherein said step of detecting the degree of positional proximity between image pixels corresponding to record dots of the same type of ink includes counting, within an (n x m) pixel region (n ≥ 1, m ≥ 1) defined around a given image pixel, image pixels corresponding to the record dots of the same type of ink as a record dot corresponding to the given image pixel, thereby detecting the degree of positional proximity of image pixels corresponding to the record dots of the same type of ink with respect to the record dot corresponding to the given image pixel.
Claim 43
Dependent Claim
41 words
A record data processing method according to Claim 41, wherein said substituting step effects substitution with the different type of ink in accordance with the degree of positional proximity of image pixels corresponding to dots of the same type of ink.
Claim 44
Dependent Claim
109 words
An ink jet recording apparatus which records an image represented by image pixels by discharging a plurality of types of inks of different colors from a recording head, said recording apparatus comprising: boundary detecting means for detecting, a plurality of times under different detecting conditions, a degree of positional proximity between image pixels corresponding to record pixels to be formed by inks of different colors; and boundary converting means for substituting an ink for forming record pixels corresponding to the image pixels with an ink of a different color, under a condition corresponding to the conditions of the plurality of times of detection performed by said boundary detecting means.
Claim 45
Dependent Claim
33 words
An ink jet recording apparatus according to Claim 44, wherein said boundary converting means performs substitution of a black ink for forming a black record pixel with an ink of a different color.
Claim 46
Dependent Claim
30 words
An ink jet recording apparatus according to Claim 44, wherein said boundary detecting means detects the degree of positional proximity over different detection areas for a given original image region.
Claim 47
Dependent Claim
41 words
An ink jet recording apparatus according to Claim 46, wherein said boundary converting means performs substitution of an ink for forming a record pixel with the ink of a different color at conversion ratios corresponding to sizes of the detection areas.
Claim 48
Dependent Claim
72 words
An ink jet recording apparatus according to Claim 46, wherein said boundary converting means performs substitution of an ink for forming a record pixel with the ink of a different color by applying a relatively larger conversion ratio to a boundary zone detected by said boundary detecting means through detection over a narrower detection area than a conversion ratio applied to a boundary zone detected through detection over a wider detection area.
Claim 49
Dependent Claim
72 words
An ink jet recording apparatus according to Claim 46, wherein said boundary converting means performs substitution of an ink for forming a record pixel with the ink of a different color by applying a relatively smaller conversion ratio to a boundary zone detected by said boundary detecting means through detection over a narrower detection area than a conversion ratio applied to a boundary zone detected through detection over a wider detection area.
Claim 50
Dependent Claim
74 words
An ink jet recording apparatus according to Claim 49, wherein said boundary converting means performs substitution of an ink for forming a record pixel with the ink of a different color by employing a relatively smaller boundary conversion mask to the boundary zone detected by said boundary detecting means through detection over the narrower detection area than a boundary conversion mask employed to the boundary zone detected through detection over the wider detection area.
Claim 51
Dependent Claim
44 words
An ink jet recording apparatus according to Claim 44, wherein said boundary converting means employs a plurality of boundary converting conditions and selectively uses the plurality of converting conditions based on conditions necessary for eliminating factors which cause bleeding of inks at a boundary.
Claim 52
Dependent Claim
23 words
An ink jet recording apparatus according to Claim 44, further comprising said recording head, wherein said recording head discharges ink by utilizing heat.
Claim 53
Dependent Claim
24 words
An ink jet recording apparatus according to Claim 44, further comprising mounting means, wherein said recording head is interchangeably mounted on said mounting means.
Claim 54
Dependent Claim
18 words
An ink jet recording apparatus according to Claim 44, further comprising a carriage for carrying said recording head.
Claim 55
Dependent Claim
29 words
An ink jet recording apparatus according to Claim 44, further comprising conveying means for conveying a recording medium on which recording is to be performed by said recording head.
Claim 56
Dependent Claim
19 words
An ink jet recording apparatus according to Claim 44, wherein said recording apparatus is incorporated in a copying apparatus.
Claim 57
Dependent Claim
19 words
An ink jet recording apparatus according to Claim 44, wherein said recording apparatus is incorporated in a facsimile apparatus.
Claim 58
Dependent Claim
19 words
An ink jet recording apparatus according to Claim 44, wherein said recording apparatus is incorporated in a computer terminal.
Claim 59
Dependent Claim
117 words
An ink jet recording method in which an image represented by image pixels is recorded by a plurality of types of inks of different colors discharged from a recording head, said recording method comprising the steps of: detecting, a plurality of times under different detecting conditions, a degree of positional proximity between image pixels corresponding to record pixels to be formed by inks of different colors; substituting an ink for forming record pixels corresponding to the image pixels with an ink of a different color, under a condition corresponding to the conditions of the plurality of times of detection performed in the detecting step; and discharging inks in accordance with the substitution performed in the substituting step.
Claim 60
Dependent Claim
32 words
An ink jet recording method according to Claim 59, wherein said substituting step performs substitution of a black ink for forming a black record pixel with an ink of a different color.
Claim 61
Dependent Claim
29 words
An ink jet recording method according to Claim 59, wherein said detecting step detects the degree of positional proximity over different detection areas for a given original image region.
Claim 62
Dependent Claim
40 words
An ink jet recording method according to Claim 61, wherein said substituting step performs substitution of an ink for forming a record pixel with the ink of a different color, at conversion ratios corresponding to sizes of the detection areas.
Claim 63
Dependent Claim
65 words
An ink jet recording method according to Claim 61, wherein said substituting step performs substitution of an ink for forming a record pixel with ink of a different color by applying a relatively larger conversion ratio to a boundary zone detected through detection over a narrower detection area than a conversion ratio applied to a boundary zone detected through detection over a wider detection area.
Claim 64
Dependent Claim
66 words
An ink jet recording method according to Claim 61, wherein said substituting step performs substitution of an ink for forming a record pixel with the ink of a different color by applying a relatively smaller conversion ratio to a boundary zone detected through detection over a narrower detection area than a conversion ratio applied to a boundary zone detected through detection over a wider detection area.
Claim 65
Dependent Claim
69 words
An ink jet recording method according to Claim 64, wherein said boundary converting means performs substitution of an ink for forming a record pixel with the ink of a different color by employing a relatively smaller boundary conversion mask to the boundary zone detected through detection over the narrower detection area than a boundary conversion mask employed to the boundary zone detected through detection over the wider detection area.
Claim 66
Dependent Claim
43 words
An ink jet recording method according to Claim 59, wherein said substituting step employs a plurality of boundary converting conditions and selectively uses the plurality of converting conditions based on conditions necessary for eliminating factors which cause bleeding of inks at a boundary.
Claim 67
Dependent Claim
116 words
A record data processing method for recording an image based on image pixels with a plurality of types of inks of different colors discharged from a recording head, said processing method comprising the steps of: detecting, a plurality of times under different detecting conditions, a degree of positional proximity between image pixels corresponding to record pixels to be formed by inks of different colors; and substituting image pixels corresponding to record pixels to be formed by ink of one color with substitute pixels corresponding to record pixels to be formed by an ink of a different color, under a condition corresponding to the conditions of the plurality of times of detection performed in the detecting step.
Claim 68
Dependent Claim
52 words
A record data processing method according to Claim 67, wherein said substituting step performs substitution of a black image pixel corresponding to a black record pixel to be formed with a black ink with a substitute pixel corresponding to a record pixel to be formed by an ink of a different color.
Claim 69
Dependent Claim
29 words
A record data processing method according to Claim 67, wherein said detecting step detects the degree of positional proximity over different detection areas for a given original image region.
Claim 70
Dependent Claim
41 words
A record data processing method according to Claim 69, wherein said substituting step performs substitution of the substitute pixel for forming a record pixel with the ink of a different color at conversion ratios corresponding to sizes of the detection areas.
Claim 71
Dependent Claim
67 words
A record data processing method according to Claim 69, wherein said substituting step performs substitution of the substitute pixel for forming a record pixel with the ink of a different color by applying a relatively larger conversion ratio to a boundary zone detected through detection over a narrower detection area than a conversion ratio applied to a boundary zone detected through detection over a wider detection area.
Claim 72
Dependent Claim
67 words
A record data processing method according to Claim 69, wherein said substituting step performs substitution of the substitute pixel for forming a record pixel with the ink of a different color by applying a relatively smaller conversion ratio to a boundary zone detected through detection over a narrower detection area than a conversion ratio applied to a boundary zone detected through detection over a wider detection area.
Claim 73
Dependent Claim
70 words
A record data processing method according to Claim 72, wherein said boundary converting means performs substitution of the substitute pixel for forming a record pixel with the ink of a different color by employing a relatively smaller boundary conversion mask to the boundary zone detected through detection over the narrower detection area than a boundary conversion mask employed to the boundary zone detected through detection over the wider detection area.
Claim 74
Dependent Claim
43 words
A record data processing method according to Claim 67, wherein said substituting step employs a plurality of boundary converting conditions and selectively uses the plurality of converting conditions based on conditions necessary for eliminating factors which cause bleeding of inks at a boundary.
Claim 75
Dependent Claim
85 words
A recording apparatus, for example an ink jet recording apparatus, a recording method, a method of controlling a recording head or a method of processing data for controlling the type of ink to be used to form an image pixel, wherein the type of ink to be used to form an image pixel is controlled so as to be dependent upon the degree or proportion of proximity to that image pixel of image pixels to be formed by a certain type or types of ink.
Claim 76
Dependent Claim
84 words
A recording apparatus, a recording method, a method of controlling a recording head or a method of processing data for recording an image wherein a signal indicating that an image pixel is to be produced using a given type of ink is substituted by a signal indicating that a different type of ink is to be used in dependence upon the degree or proportion of proximity to the image pixel of image pixels to be formed with a particular type or types of ink.
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