EP0430075A2
Expired / Lapsed
EP
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Image recording apparatus using recording head
Assignee: Canon Inc
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Filing: 1990-11-22
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Granted: —
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Expires: 2010-11-22
Abstract
Abstract An image recording apparatus using a recording head includes a tone correcting device for correcting tone levels of an image signal to be supplied to the recording head to correct tone characteristics of the recording head in accordance with tone correcting information provided for the recording head; and a tone correcting information setting device for setting the tone correcting information to the tone correcting device for the recording head.
Inventors
- 👤 Akio C/O Canon Kabushiki Kaisha Suzuki
- 👤 Nobuhiko C/O Canon Kabushiki Kaisha Takekoshi
- 👤 Toshimitsu C/O Canon Kabushiki Kaisha Danzuka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:08
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
69 words
An image recording apparatus using a recording head, comprising: tone correcting means for correcting an image signal to be supplied to the recording head to match the signal with tone characteristics of the recording head in accordance with tone correcting information provided particularly for the recording head; and tone correcting information setting means for setting the tone correcting information to said tone correcting means particularly for the recording head.
Claim 2
Dependent Claim
69 words
An image recording apparatus using a recording head, comprising: tone correcting means for correcting an image signal to be supplied to the recording head to match the signal with tone characteristics of the recording head in accordance with tone correcting information provided particularly for the recording head; and tone correcting information setting means for setting the tone correcting information to said tone correcting means particularly for the recording head.
Claim 3
Dependent Claim
51 words
An image recording apparatus, according to claim 1, wherein said information setting means includes characteristics signal generating means for generating a signal corresponding to the tone characteristics of the recording head, and sets the correcting information to the tone correcting means in accordance with the signal of said signal generating means.
Claim 4
Dependent Claim
23 words
An apparatus according to claim 2, wherein said signal generating means is in the form of a ROM mounted on the recording head.
Claim 5
Dependent Claim
59 words
An apparatus according to claim 2, wherein said signal generating means comprises pattern outputting means for outputting a tone characteristics detecting pattern from the recording head, image reading means for reading the pattern, and process means for comparing an output of said reading means with a predetermined tone correcting characteristics and determines the tone characteristics of the recording head.
Claim 6
Dependent Claim
72 words
An apparatus according to Claim 1, wherein said tone correcting information setting means comprises pattern outputting means for outputting a tone characteristics detecting pattern from the recording head, image reading means for reading the pattern, process means for determining a desired tone correcting curve on the basis of data from said image reading means, and signal outputting means for outputting the data of the desired correcting curve as the tone correcting information.
Claim 7
Dependent Claim
23 words
An apparatus according to Claim 1, wherein said recording head is an ink jet recording head for ejecting ink through its ejection outlets.
Claim 8
Dependent Claim
37 words
An apparatus according to Claim 6, wherein said recording head comprises thermal energy producing means, disposed adjacent the ejection outlets, to cause state change of the ink by heat to eject the ink through the ejection outlets.
Claim 9
Dependent Claim
27 words
An apparatus according to Claim 1, wherein the recording head comprises plural recording head elements to effect the recording in different colors to form a color image.
Claim 10
Dependent Claim
32 words
An apparatus according to Claim 1, wherein the recording head changes tone of the image by changing a number of dots in accordance with the tone of the image signal supplied thereto.
Claim 11
Dependent Claim
26 words
An apparatus according to Claim 1, wherein the recording head changes a size of a dot in accordance with tone of the image signal supplied thereto.
Claim 12
Dependent Claim
15 words
An apparatus according to Claim 1, wherein said image forming apparatus is a facsimile machine.
Claim 13
Dependent Claim
15 words
An apparatus according to Claim 7, wherein said image recording apparatus is a facsimile machine.'
Claim 14
Dependent Claim
15 words
An apparatus according to Claim 1, wherein said image recording apparatus is a copying machine.
Claim 15
Dependent Claim
15 words
An apparatus according to Claim 7, wherein said image recording apparatus is a copying machine.
Claim 16
Dependent Claim
108 words
An image recording apparatus using a recording head having plural image recording elements, comprising: density non-uniformity correcting means for correcting an image signal to be supplied to the recording head to substantially compensate for density non-uniformity among the plural image recording elements of the recording head; tone correcting means for correcting tone of an image signal to be supplied to the recording head in accordance with tone correcting information provided particularly for the recording head to match the signal with tone characteristics of the recording head; and tone correcting information setting means for setting the tone correcting information to said tone correcting means, particularly for the recording head.
Claim 17
Dependent Claim
108 words
An image recording apparatus using a recording head having plural image recording elements, comprising: density non-uniformity correcting means for correcting an image signal to be supplied to the recording head to substantially compensate for density non-uniformity among the plural image recording elements of the recording head; tone correcting means for correcting tone of an image signal to be supplied to the recording head in accordance with tone correcting information provided particularly for the recording head to match the signal with tone characteristics of the recording head; and tone correcting information setting means for setting the tone correcting information to said tone correcting means, particularly for the recording head.
Claim 18
Dependent Claim
51 words
An image recording apparatus, according to Claim 15, wherein said information setting means includes characteristics signal generating means for generating a signal corresponding to the tone characteristics of the recording head, and sets the correcting information to the tone correcting means in accordance with the signal of said signal generating means.
Claim 19
Dependent Claim
23 words
An apparatus according to Claim 16, wherein said signal generating means is in the form of a ROM mounted on the recording head.
Claim 20
Dependent Claim
59 words
An apparatus according to Claim 15, wherein said signal generating means comprises pattern outputting means for outputting a tone characteristics detecting pattern from the recording head, image reading means for reading the pattern, and process means for comparing an output of said reading means with a predetermined tone correcting characteristics and determines the tone characteristics of the recording head.
Claim 21
Dependent Claim
72 words
An apparatus according to Claim 15, wherein said tone correcting information setting means comprises pattern outputting means for outputting a tone characteristics detecting pattern from the recording head, image reading means for reading the pattern, process means for determining a desired tone correcting curve on the basis of data from said image reading means, and signal outputting means for outputting the data of the desired correcting curve as the tone correcting information.
Claim 22
Dependent Claim
23 words
An apparatus according to Claim 15, wherein said recording head is an ink jet recording head for ejecting ink through its ejection outlets.
Claim 23
Dependent Claim
37 words
An apparatus according to Claim 20, wherein said recording head comprises thermal energy producing means, disposed adjacent the ejection outlets, to cause state change of the ink by heat to eject the ink through the ejection outlets.
Claim 24
Dependent Claim
27 words
An apparatus according to Claim 15, wherein the recording head comprises plural recording head elements to effect the recording in different colors to form a color image.
Claim 25
Dependent Claim
32 words
An apparatus according to Claim 15, wherein the recording head changes tone of the image by changing a number of dots in accordance with the tone of the image signal supplied thereto.
Claim 26
Dependent Claim
26 words
An apparatus according to Claim 15, wherein the recording head changes a size of a dot in accordance with tone of the image signal supplied thereto.
Claim 27
Dependent Claim
29 words
An apparatus according to Claim 15, wherein said tone correcting means effects its tone correcting operation to the image signal having been corrected by said density non-uniformity correcting means.
Claim 28
Dependent Claim
31 words
An apparatus according to Claim 15, wherein said density non-uniformity correcting means effects its density non-uniformity correcting operation for groups of image recording elements, said group having plural image recording elements.
Claim 29
Dependent Claim
24 words
An apparatus according to Claim 15, wherein said density non-uniformity correcting means effects its density non-uniformity correcting operation for the individual image recording elements.
Claim 30
Dependent Claim
15 words
An apparatus according to Claim 15, wherein said image forming apparatus is a facsimile machine.
Claim 31
Dependent Claim
15 words
An apparatus according to Claim 21, wherein said image recording apparatus is a facsimile machine.
Claim 32
Dependent Claim
15 words
An apparatus according to Claim 21, wherein said image recording apparatus is a copying machine.
Claim 33
Dependent Claim
15 words
An apparatus according to Claim 21, wherein said image recording apparatus is a copying machine.
Claim 34
Dependent Claim
100 words
An image recording apparatus,comprising: a recording head having a plurality of image recording elements; density non-uniformity correcting means for correcting an image signal to be supplied to the recording head to substantially compensate for density non-uniformity characteristics among the plural recording elements of the recording head; and tone correcting means for correcting tone of the image signal to be supplied to the image recording elements in accordance with tone correcting information, for respective groups of image recording elements to match the signal with tone characteristics of the recording head, said groups each having a predetermined number of image recording elements.
Claim 35
Dependent Claim
100 words
An image recording apparatus,comprising: a recording head having a plurality of image recording elements; density non-uniformity correcting means for correcting an image signal to be supplied to the recording head to substantially compensate for density non-uniformity characteristics among the plural recording elements of the recording head; and tone correcting means for correcting tone of the image signal to be supplied to the image recording elements in accordance with tone correcting information, for respective groups of image recording elements to match the signal with tone characteristics of the recording head, said groups each having a predetermined number of image recording elements.
Claim 36
Dependent Claim
21 words
An apparatus according to Claim 32, wherein said tone correcting means effects the tone correcting operation for the individual recording element.
Claim 37
Dependent Claim
23 words
An apparatus according to Claim 32, wherein said recording head is an ink jet recording head for ejecting ink through its ejection outlets.
Claim 38
Dependent Claim
37 words
An apparatus according to Claim 34, wherein said recording head comprises thermal energy producing means, disposed adjacent the ejection outlets, to cause state change of the ink by heat to eject the ink through the ejection outlets.
Claim 39
Dependent Claim
27 words
An apparatus according to Claim 32, wherein the recording head comprises plural recording head elements to effect the recording in different colors to form a color image.
Claim 40
Dependent Claim
32 words
An apparatus according to Claim 32, wherein the recording head changes tone of the image by changing a number of dots in accordance with the tone of the image signal supplied thereto.
Claim 41
Dependent Claim
26 words
An apparatus according to Claim 32, wherein the recording head changes a sise of a dot in accordance with tone of the image signal supplied thereto.
Claim 42
Dependent Claim
15 words
An apparatus according to Claim 32, wherein said image forming apparatus is a facsimile machine.
Claim 43
Dependent Claim
15 words
An apparatus according to Claim 35, wherein said image recording apparatus is a facsimile machine.
Claim 44
Dependent Claim
15 words
An apparatus according to Claim 32, wherein said image recording apparatus is a copying machine.
Claim 45
Dependent Claim
15 words
An apparatus according to Claim 35, wherein said image recording apparatus is a copying machine.
Claim 46
Dependent Claim
67 words
An image recording apparatus, comprising: a recording head having a plurality of image recording elements; tone correcting means for correcting an image signal to be supplied to the image recording elements in accordance with tone correcting information, for a group of image recording elements to match the signal with tone characteristics of said recording head, said group each including a predetermined number of the image recording elements.
Claim 47
Dependent Claim
67 words
An image recording apparatus, comprising: a recording head having a plurality of image recording elements; tone correcting means for correcting an image signal to be supplied to the image recording elements in accordance with tone correcting information, for a group of image recording elements to match the signal with tone characteristics of said recording head, said group each including a predetermined number of the image recording elements.
Claim 48
Dependent Claim
29 words
An apparatus according to Claim 43, wherein said tone correcting means effects its tone correcting operation to the image signal having been corrected by said density non-uniformity correcting means.
Claim 49
Dependent Claim
31 words
An apparatus according to Claim 43, wherein said density non-uniformity correcting means effects its density non-uniformity correcting operation for groups of image recording elements, said group having plural image recording elements.
Claim 50
Dependent Claim
24 words
An apparatus according to Claim 45, wherein said density non-uniformity correcting means effects its density non-uniformity correcting operation for the individual image recording elements.
Claim 51
Dependent Claim
15 words
An apparatus according to Claim 43, wherein said image forming apparatus is a facsimile machine.
Claim 52
Dependent Claim
15 words
An apparatus according to Claim 43, wherein said image recording apparatus is a facsimile machine.
Claim 53
Dependent Claim
15 words
An apparatus according to Claim 43, wherein said image recording apparatus is a copying machine.
Claim 54
Dependent Claim
15 words
An apparatus according to Claim 43, wherein said image forming apparatus is a facsimile machine.
Claim 55
Dependent Claim
15 words
An apparatus according to Claim 46, wherein said image recording apparatus is a facsimile machine.
Claim 56
Dependent Claim
15 words
An apparatus according to Claim 43, wherein said image recording apparatus is a copying machine.
Claim 57
Dependent Claim
15 words
An apparatus according to Claim 46, wherein said image recording apparatus is a copying machine.
Claim 58
Dependent Claim
51 words
An image recording apparatusl comprising: a recording head having a plurality of image recording element; non-uniformity correcting means for controlling an image signal in accordance with density non-uniformity of the recording head; and tone correcting means for correcting tone for the respective image recording elements in accordance with an image signal.
Claim 59
Dependent Claim
51 words
An image recording apparatusl comprising: a recording head having a plurality of image recording element; non-uniformity correcting means for controlling an image signal in accordance with density non-uniformity of the recording head; and tone correcting means for correcting tone for the respective image recording elements in accordance with an image signal.
References Cited (Backward Citations)
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