Patent EP0726155A2 successfully refreshed from Google Patents.
EP0726155A2
Expired / Lapsed
EP
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Ink-jet head, ink-jet cartridge, printing apparatus, and ink-jet printing method
Assignee: Canon Inc
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Filing: 1996-01-03
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Granted: —
•
Expires: 2016-01-03
Abstract
Abstract In an ink jet head having an ink discharge head for discharging an ink, and a liquid discharge head for discharging a print improving liquid given to a printing medium for improving printability in ink jet printing, the liquid discharge head (2002) is disposed to be sandwiched between colored discharge heads (2001) and (2003) for discharging at least one set of colored inks with respect to a scanning direction. This provides an ink jet head for optimally utilizing a pre-feed technique and/or a follow feed technique in ink jet printing.
Inventors
- 👤 Hiromitsu C/O Canon Kabushiki Kaisha Hirabayashi
- 👤 Shin'ichi c/o Canon Kabushiki Kaisha Sato
- 👤 Jiro C/O Canon Kabushiki Kaisha Moriyama
- 👤 Masao C/O Canon Kabushiki Kaisha Kato
- 👤 Toshiharu C/O Canon Kabushiki Kaisha Inui
- 👤 Minako c/o Canon Kabushiki Kaisha Kato
- 👤 Hitoshi C/O Canon Kabushiki Kaisha Sugimoto
- 👤 Hiroshi C/O Canon Kabushiki Kaisha Tajika
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:15
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102; G06K15/105; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14016; B41J2/14032; B41J2/14056; B41J2/21; B41J2/2107; B41J2/2114; B41J2/165; B41J2/16505; B41J2/16508; G06K2215/00; G06K2215/0082; G06K2215/0094
Claims Analysis
Total Claims: 55
Claim 1
Independent Claim
68 words
An ink jet head characterized by at least comprising: a first ink discharge portion for discharging an ink; a liquid discharge portion for discharging a liquid containing at least a print improving liquid given to a printing medium for improving printability in ink jet printing; and a second ink discharge portion for discharging an ink, wherein these discharge portions are arranged in this order in the predetermined direction.
Claim 2
Dependent Claim
29 words
The ink jet head as claimed in Claim 1, characterized in that said first ink discharge portion and said second ink discharge portion discharge inks of the same color.
Claim 3
Dependent Claim
28 words
The ink jet head as claimed in Claim 1, characterized in that said first ink discharge portion and said second ink discharge portion discharge inks of different colors.
Claim 4
Dependent Claim
52 words
The ink jet head as claimed in Claim 2, characterized in that, with respect to a scanning direction, said first discharge portion is a first black ink discharge portion, said second discharge portion is a print improving liquid discharge portion, and a third discharge portion is a second black ink discharge portion.
Claim 5
Dependent Claim
63 words
The ink jet head as claimed in Claim 3, characterized in that, with respect to a scanning direction, said first discharge portion is a first black ink discharge portion, said second discharge portion is a print improving liquid discharge portion, and a third discharge portion is a discharge portion integrating a plurality of ink discharge portions of inks of colors different from black.
Claim 6
Dependent Claim
72 words
The ink jet head as claimed in Claim 2, characterized in that, with respect to a scanning direction, said first discharge portion is a first black ink discharge portion, said second discharge portion is a print improving liquid discharge portion, a third discharge portion is a second black ink discharge portion, and a fourth discharge portion is a discharge portion integrating a plurality of ink discharge portions of inks other than black.
Claim 7
Dependent Claim
71 words
The ink jet head as claimed in Claim 3, characterized in that, with respect to a scanning direction, said first discharge portion is a first black ink discharge portion, said second discharge portion is a print improving liquid discharge portion, a third discharge portion is a cyan ink discharge portion, a fourth discharge portion is a magenta ink discharge portion, and a fifth discharge portion is a yellow ink discharge portion.
Claim 8
Dependent Claim
82 words
The ink jet head as claimed in Claim 2, characterized in that, with respect to a scanning direction, said first discharge portion is a first black ink discharge portion, said second discharge portion is a print improving liquid discharge portion, a third discharge portion is a second black ink discharge portion, a fourth discharge portion is a cyan ink discharge portion, a fifth discharge portion is a magenta ink discharge portion, and a sixth discharge portion is a yellow ink discharge portion.
Claim 9
Dependent Claim
72 words
The ink jet head as claimed in Claim 1, said ink jet head characterized by having a head structure having two or more liquid discharge portions for discharging the same colors of liquids, and said liquid discharge portions for discharging the same colors of liquids are disposed shifted by an odd number times of 1/2 a nozzle pitch of said discharge portions in a main scanning direction, a sub-scanning direction, or both.
Claim 10
Dependent Claim
40 words
The ink jet head as claimed in Claim 9, characterized in that said liquid discharge portions for discharging the same colors of liquids are disposed shifted by about 1/2 the nozzle pitch of the discharge portions in the sub-scanning direction.
Claim 11
Dependent Claim
38 words
The ink jet head as claimed in any one of Claims 1 to 10, said ink jet head characterized by having a head unit structure incorporating head chips constituting said individual discharge portions in an integral type frame.
Claim 12
Dependent Claim
43 words
The ink jet head as claimed in any one of Claims 1 to 10, said ink jet head characterized by having a plurality of the head unit structures incorporating head chips constituting said individual discharge heads in an integral type frame are combined.
Claim 13
Dependent Claim
39 words
The ink jet head as claimed in any one of Claims 1 to 10, said ink jet head characterized by having an energy generating element for generating a heat energy for discharging said ink or said print improving liquid.
Claim 14
Dependent Claim
44 words
The ink jet head as claimed in any one of Claims 1 to 10, characterized in that said print improving liquid contains a cationic substance of a low molecular weight component and a high molecular weight component, and said ink contains an anionic dye.
Claim 15
Dependent Claim
53 words
The ink jet head as claimed in any one of Claims 1 to 10, characterized in that said print improving liquid contains a cationic substance of a low molecular weight component and a high molecular weight component, and said ink contains an anionic dye or at least an anionic compound and a pigment.
Claim 16
Dependent Claim
91 words
An ink jet printing apparatus for making a print using an ink jet head having a plurality of discharge portions in a predetermined direction, said discharge portion at least characterized by comprising: a first ink discharge portion for discharging an ink; a liquid discharge portion for discharging a liquid containing at least a print improving liquid given to a printing medium for improving printability in ink jet printing; and a second ink discharge portion for discharging an ink, wherein these discharge portions are arranged in this order in the predetermined direction.
Claim 17
Dependent Claim
145 words
An ink jet printing apparatus for making a print using an ink jet head having an ink discharge portion for discharging an ink, and a liquid discharge portion for discharging a liquid containing at least a print improving liquid given to a printing medium for improving printability in ink jet printing, characterized by comprising: discharge control means for forming an image so that said print improving liquid is sandwiched between inks on a printing medium with respect to a direction perpendicular to the surface of the medium by discharging said print improving liquid from said liquid discharge portion in an outward way of a main scanning direction of printing, discharging said ink from said ink discharge portion, discharging said print improving liquid from said liquid discharge portion in a return way of the main scanning direction, and discharging said ink from said ink discharge portion.
Claim 18
Dependent Claim
145 words
An ink jet printing apparatus for making a print using an ink jet head having an ink discharge portion for discharging an ink, and a liquid discharge portion for discharging a liquid containing at least a print improving liquid given to a printing medium for improving printability in ink jet printing, characterized by comprising: discharge control means for forming an image so that said print improving liquid is sandwiched between inks on a printing medium with respect to a direction perpendicular to the surface of the medium by discharging said ink from said ink discharge portion in an outward way of a main scanning direction of printing, discharging said print improving liquid from said liquid discharge portion, discharging said ink from said ink discharge portion in a return way of the main scanning direction, and discharging said print improving liquid from said liquid discharge portion.
Claim 19
Dependent Claim
155 words
An ink jet printing apparatus for making a print using an ink jet head having an ink discharge portion for discharging an ink, and a liquid discharge portion for discharging a liquid containing at least a print improving liquid given to a printing medium for improving printability in ink jet printing, characterized by comprising: discharge control means for forming an image so that said print improving liquid is sandwiched between inks on a printing medium with respect to a direction perpendicular to the surface of the medium by discharging said print improving liquid from said liquid discharge portion in an outward way of a main scanning direction of printing, discharging said ink from said ink discharge portion, discharging said print improving liquid from said liquid discharge portion in a return way of the main scanning direction, discharging said ink from said ink discharge portion, and discharging said print improving liquid from said liquid discharge portion.
Claim 20
Dependent Claim
128 words
An ink jet printing apparatus for making a print using an ink jet head having an ink discharge portion for discharging an ink, and a liquid discharge portion for discharging a liquid containing at least a print improving liquid given to a printing medium for improving printability in ink jet printing, characterized by comprising: discharge control means for forming an image so that said print improving liquid is sandwiched between inks on a printing medium with respect to a direction perpendicular to the surface of the medium by discharging said print improving liquid from said liquid discharge portion in an outward way of a main scanning direction of printing, discharging said ink from said ink discharge portion, and discharging said print improving liquid from said liquid discharge portion.
Claim 21
Dependent Claim
24 words
The ink jet printing apparatus as claimed in any one of Claims 16 to 20, characterized by further comprising means for constituting a facsimile.
Claim 22
Dependent Claim
24 words
The ink jet printing apparatus as claimed in any one of Claims 16 to 20, characterized by further comprising means for constituting a copier.
Claim 23
Dependent Claim
24 words
The ink jet printing apparatus as claimed in any one of Claims 16 to 20, characterized by further comprising means for constituting a computer.
Claim 24
Dependent Claim
35 words
An ink jet printing apparatus characterized by having detachably on a main unit of the apparatus the ink jet head having a plurality of discharge heads described in any one of Claims 1 to 15.
Claim 25
Dependent Claim
44 words
The ink jet printing apparatus as claimed in Claim 24, said apparatus characterized by having a construction wherein a head unit structure incorporating head chips constituting said individual discharge portions in an integral type frame, capable of identifying individual head units for optimized control.
Claim 26
Dependent Claim
53 words
The ink jet printing apparatus as claimed in Claim 24 or Claim 25, said apparatus characterized by further comprising print control means for forming an image so that said print improving liquid discharged from said liquid discharge portion is sandwiched between inks discharged from at least said set of colored ink discharge portions.
Claim 27
Dependent Claim
52 words
The ink jet printing apparatus as claimed in Claim 26, characterized in that said print improving liquid discharged from said liquid discharge portion is disposed at a position shifted by 1/2 picture element relative to an ink picture element on the printing medium in the main scanning direction or the sub-scanning direction.
Claim 28
Dependent Claim
23 words
The ink jet printing apparatus as claimed in Claim 27, characterized in that said print control means is capable of 1-pass bidirectional printing.
Claim 29
Dependent Claim
23 words
The ink jet printing apparatus as claimed in Claim 27, characterized in that said print control means is capable of 1-pass unidirectional printing.
Claim 30
Dependent Claim
23 words
The ink jet printing apparatus as claimed in Claim 27, characterized in that said print control means is capable of 2-pass bidirectional printing.
Claim 31
Dependent Claim
23 words
The ink jet printing apparatus as claimed in Claim 27, characterized in that said print control means is capable of 2-pass unidirectional printing.
Claim 32
Dependent Claim
28 words
The ink jet printing apparatus as claimed in Claim 27, characterized in that said print control means is capable of N (N being a positive number)-pass bidirectional printing.
Claim 33
Dependent Claim
28 words
The ink jet printing apparatus as claimed in Claim 27, characterized in that said print control means is capable of N (N being a positive number)-pass unidirectional printing.
Claim 34
Dependent Claim
34 words
The ink jet printing apparatus as claimed in any one of Claim 27 to Claim 33, characterized in that said set of colored inks sandwiching said print improving liquid are the same in color.
Claim 35
Dependent Claim
33 words
The ink jet printing apparatus as claimed in any one of Claim 27 to Claim 33, characterized in that said set of colored inks sandwiching said print improving liquid are different in color.
Claim 36
Dependent Claim
32 words
The ink jet printing apparatus as claimed in any one of Claim 27 to Claim 33, characterized in that said set of colored inks sandwiching said print improving liquid have different compositions.
Claim 37
Dependent Claim
44 words
The ink jet printing apparatus as claimed in Claim 34, characterized in that, in said different compositions, one is a super-penetrating type solvent composition penetrating momentarily into the printing medium, and one is an overlaying type solvent composition penetrating gradually into the printing medium.
Claim 38
Dependent Claim
46 words
The ink jet printing apparatus as claimed in any one of Claim 27 to Claim 33, characterized in that said print improving liquid contains a cationic substance of a low molecular weight component and a high molecular weight component, and said ink contains an anionic dye.
Claim 39
Dependent Claim
55 words
The ink jet printing apparatus as claimed in any one of Claim 27 to Claim 33, characterized in that said print improving liquid contains a cationic substance of a low molecular weight component and a high molecular weight component, and said ink contains an anionic dye or at least an anionic compound and a pigment.
Claim 40
Dependent Claim
96 words
An ink jet printing method for making a print using an ink jet head having an ink discharge portion for discharging a colored ink, and a liquid discharge portion for discharging a print improving liquid given to a printing medium for improving printability in ink jet printing, said method characterized by comprising a step of forming an image so that said print improving liquid discharged from said liquid discharge portion is sandwiched at least between said set of colored inks on a printing medium with respect to a direction perpendicular to the surface of the medium.
Claim 41
Dependent Claim
57 words
The ink jet printing method as claimed in Claim 40, characterized in that said print improving liquid discharged from said liquid discharge portion is controlled to be disposed at a position shifted by 1/2 picture element relative to an ink picture element on the printing medium in the main scanning direction or the sub-scanning direction or both.
Claim 42
Dependent Claim
24 words
The ink jet printing method as claimed in Claim 40 or Claim 41, characterized in that said colored inks are the same in color.
Claim 43
Dependent Claim
23 words
The ink jet printing method as claimed in Claim 40 or Claim 41, characterized in that said colored inks are different in color.
Claim 44
Dependent Claim
147 words
An ink jet printing method for making a print using an ink jet head having an ink discharge portion for discharging a colored ink, and a liquid discharge portion for discharging a print improving liquid given to a printing medium for improving printability in ink jet printing, said method characterized by comprising the steps of: in an outward way of a main scanning direction of printing, discharging said print improving liquid from said liquid discharge print head unit, and discharging said ink from said ink discharge portion; and in a return way of a sub-scanning direction of printing, discharging said print improving liquid from said liquid discharge portion, and discharging said ink from said ink discharge portion so that said print improving liquid is sandwiched between inks on a printing medium with respect to a direction perpendicular to the surface of the medium to form an image.
Claim 45
Dependent Claim
143 words
An ink jet printing method for making a print using an ink jet head having an ink discharge portion for discharging a colored ink, and a liquid discharge portion for discharging a print improving liquid given to a printing medium for improving printability in ink jet printing, said method characterized by comprising the steps of: in an outward way of a main scanning direction of printing, discharging said ink from said ink discharge portion, and discharging said sprint improving liquid from said liquid discharge print head unit, and in a return way of a sub-scanning direction of printing, discharging said ink from said ink discharge portion, and discharging said print improving liquid from said liquid discharge portion so that said print improving liquid is sandwiched between inks on a printing medium with respect to a direction perpendicular to the surface of the medium.
Claim 46
Dependent Claim
167 words
An ink jet printing method for making a print using an ink jet head having an ink discharge portion for discharging a colored ink, and a liquid discharge portion for discharging a print improving liquid given to a printing medium for improving printability in ink jet printing, said method characterized by comprising the steps of: in an outward way of a main scanning direction of printing, discharging said print improving liquid from said liquid discharge print head unit, discharging said ink from said ink discharge portion, and discharging said print improving liquid from said liquid discharge print head unit; and in a return way of a sub-scanning direction of printing, discharging said print improving liquid from said liquid discharge portion, discharging said ink from said ink discharge portion, and discharging said print improving liquid from said liquid discharge print head unit, so that said print improving liquid is sandwiched between inks on a printing medium with respect to a direction perpendicular to the surface of the medium.
Claim 47
Dependent Claim
121 words
An ink jet printing method for making a print using an ink jet head having an ink discharge portion for discharging a colored ink, and a liquid discharge portion for discharging a print improving liquid given to a printing medium for improving printability in ink jet printing, said method characterized by comprising the steps of: in a main scanning direction of printing, discharging said print improving liquid from said liquid discharge print head unit, discharging said ink from said ink discharge portion; and discharging said print improving liquid from said liquid discharge print head unit, so that said print improving liquid is sandwiched between inks on a printing medium with respect to a direction perpendicular to the surface of the medium.
Claim 48
Dependent Claim
30 words
An ink jet cartridge characterized by comprising any one of the ink jet heads of Claims 1 to 15 and an ink tank provided detachably on said ink jet head.
Claim 49
Dependent Claim
53 words
A printed matter characterized by having formed on a printing medium an image by an ink provided from an ink jet head and a print improving liquid for improving printability in ink jet printing, wherein said print improving liquid is sandwiched between at least one set of colored inks on the printing medium.
Claim 50
Dependent Claim
46 words
The printed matter as claimed in Claim 49, characterized in that said print improving liquid is disposed at a position shifted by 1/2 a picture element relative to an ink picture element on the printing medium in a main scanning direction, a sub-scanning direction, or both.
Claim 51
Dependent Claim
22 words
The printed matter as claimed in Claim 49 or Claim 50, characterized in that said colored inks are the same in color.
Claim 52
Dependent Claim
21 words
The printed matter as claimed in Claim 49 or Claim 50, characterized in that said colored inks are different in color.
Claim 53
Dependent Claim
38 words
The printed matter as claimed in Claim 49, characterized in that an amount of component of said print improving liquid present at the center is higher than amounts of individual components of inks sandwiching said print improving liquid.
Claim 54
Dependent Claim
50 words
An ink jet head, ink jet cartridge, printing or recording apparatus and/or a method of recording or printing wherein a print improving or controlling liquid or medium is arranged to be provided on a recording medium between different inks which may be of the same or different colors or types.
Claim 55
Dependent Claim
51 words
An ink jet head, ink jet cartridge, printing or recording apparatus and/or a method of recording or printing wherein a print improving or controlling liquid or medium discharging portion is arranged between different ink discharging portions which may be arranged to discharge inks of the same or different colors or types.
References Cited (Backward Citations)
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