Patent EP0788885A2 successfully refreshed from Google Patents.
EP0788885A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ink-jet printing apparatus and printing method
Assignee: Canon Inc
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Filing: 1997-02-07
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Granted: —
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Expires: 2017-02-07
Abstract
Abstract In order to deposit a liquid for improving fixing ability and water resistance of an ink at an optimal position in an appropriate amount, to maximize an effect of the liquid, and to easily generate a driving data for ejecting the liquid, low resolution printing data for respective of four printing heads is read out from a frame memory (200). A logical sum of the printing data is calculated by an OR circuit (901). Then, the logical sum is processed by a look-up table (207) to generate the driving data for the liquid ejecting head corresponding to high resolution.
Inventors
- 👤 Hideki Tanaka
- 👤 Shinji Takagi
- 👤 Hiroyuki Hyotani
- 👤 Takehiko Kasamatsu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:01
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102; B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/21; B41J2/2107; B41J2/2114; B41J2/135; B41J2/165; B41J2/16505; B41J2/16508; G06K2215/00; G06K2215/0002; G06K2215/0062; G06K2215/0071
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
166 words
An ink-jet printing apparatus using a printing head which can eject an ink and a liquid ejecting head which can eject a liquid acting to make a coloring material in the ink insoluble or coagulating the same, for forming a printing dot on a printing medium by the ink ejected from said printing head and forming a liquid dot on said printing medium by the liquid ejected from said liquid ejecting head, characterized by comprising: converting means for converting a relatively low resolution printing data into a printing data having a resolution higher than that of said data; first control means for effecting ejection of the ink from said printing head on the basis of said converted high resolution printing data; driving data generating means for generating a driving data for said liquid ejecting head on the basis of said high resolution printing data; and second control means for effecting ejection of the liquid from said liquid ejecting head on the basis of said driving data.
Claim 2
Dependent Claim
33 words
An ink-jet printing apparatus as claimed in claim 1, characterized in that said driving data generating means generates said driving data by masking said high resolution printing data according to a predetermined pattern.
Claim 3
Dependent Claim
33 words
An ink-jet printing apparatus as claimed in claim 1, characterized in that said driving data generating means generates the driving data for said liquid ejecting head by thinning said high resolution printing data.
Claim 4
Dependent Claim
77 words
An ink-jet printing apparatus as claimed in claim 1, characterized in that said printing head is a plurality of printing heads ejecting different inks, said converting means converts said low resolution printing data corresponding to respective of said plurality of said printing heads into said high resolution printing data, and said driving data generating means generates said driving data by thinning a logical sum of high resolution printing data per each of said plurality of printing heads.
Claim 5
Dependent Claim
80 words
An ink-jet printing apparatus as claimed in claim 1, characterized in that said printing head is a plurality of printing heads ejecting different inks, said converting means coverts the low resolution printing data corresponding to each of said plurality of printing heads into respective high resolution data, and said driving data generating means generates said driving data by calculating the logical sum of printing data after thinning of high resolution printing data per each of said plurality of printing heads.
Claim 6
Dependent Claim
163 words
An ink-jet printing apparatus using a printing head which can eject an ink and a liquid ejecting head which can eject a liquid acting to make a coloring material in the ink insoluble or coagulating the same, for forming a printing dot on a printing medium by the ink ejected from said printing head and forming a liquid dot on said printing medium by the liquid ejected from said liquid ejecting head, characterized by comprising: first converting means for converting a relatively low resolution printing data into a printing data having a resolution higher than that of said data; first control means for effecting ejection of the ink from said printing head on the basis of said converted high resolution printing data; second converting means for converting said low resolution printing data into a driving data for said liquid ejecting head; and second control means for effecting ejection of the liquid from said liquid ejecting head on the basis of said driving data.
Claim 7
Dependent Claim
55 words
An ink-jet printing apparatus as claimed in any preceding claim, characterized in that said low resolution printing data is a multi-value data of greater than or equal to two values representative of multiple tone for printing, and said high resolution printing data is a binary data representative of presence and absence of said printing dot.
Claim 8
Dependent Claim
22 words
An ink-jet printing apparatus as claimed in any preceding claim, which further comprises storage means for storing said low resolution printing data.
Claim 9
Dependent Claim
40 words
An ink-jet printing apparatus as claimed in claim 6, characterized in that said second converting means converts said low resolution printing data into the driving data for said liquid ejecting head in a form of thinned high resolution printing data.
Claim 10
Dependent Claim
77 words
An ink-jet printing apparatus as claimed in claim 6, characterized in that said printing head is a plurality of printing heads ejecting different inks, said first converting means converts said low resolution printing data corresponding to each of said plurality of printing heads into said high resolution printing data; and said second converting means converts a logical sum data of said low resolution printing data per each of said plurality of printing heads into said driving data.
Claim 11
Dependent Claim
50 words
An ink-jet printing apparatus as claimed in any preceding claim, which further comprises moving means for moving said printing head and said liquid ejecting head in a primary scanning direction, and feeding means for feeding said printing medium in an auxiliary scanning direction substantially perpendicular to said primary scanning direction.
Claim 12
Dependent Claim
47 words
An ink-jet printing apparatus as claimed in any preceding claim, characterized in that said second control means makes said liquid dot to be formed at a position on said printing medium where said printing dot is to be formed, before or after formation of said printing dot.
Claim 13
Dependent Claim
34 words
An ink-jet printing apparatus as claimed in any preceding claim, characterized in that said ink contains an anionic dye, and said liquid contains a cationic material of low molecular component and high molecular component.
Claim 14
Dependent Claim
45 words
An ink-jet printing apparatus as claimed in any one of claims 1-12, characterized in that said ink contains an anionic pigment or at least an anionic compound and a pigment, and said liquid contains a cationic material of low molecular component and high molecular component.
Claim 15
Dependent Claim
34 words
An ink-jet printing apparatus as claimed in any preceding claim, characterized in that said printing head and said liquid ejecting head utilize thermal energy so as to eject said ink and said liquid, respectively.
Claim 16
Dependent Claim
52 words
An ink-jet printing apparatus as claimed in any preceding claim, characterized in that said printing head and said liquid ejecting head have electrothermal transducers causing film boiling for ejecting said ink and said liquid so that said printing head and said liquid ejecting head can eject said ink and said liquid, respectively.
Claim 17
Dependent Claim
153 words
An ink-jet printing method using a printing head which can eject an ink and a liquid ejecting head which can eject a liquid acting to make a coloring material in the ink insoluble or coagulating the same, for forming a printing dot on a printing medium by the ink ejected from said printing head and forming a liquid dot on said printing medium by the liquid ejected from said liquid ejecting head, characterized by comprising the steps of: converting a relatively low resolution printing data into a printing data having a resolution higher than that of said data; effecting ejection of the ink from said printing head on the basis of said converted high resolution printing data; generating a driving data for said liquid ejecting head on the basis of said high resolution printing data; and effecting ejection of the liquid from said liquid ejecting head on the basis of said driving data.
Claim 18
Dependent Claim
30 words
An ink-jet printing method as claimed in claim 17, characterized in that said driving data for said liquid ejecting head is generated by thinning of said high resolution printing data.
Claim 19
Dependent Claim
150 words
An ink-jet printing method using a printing head which can eject an ink and a liquid ejecting head which can eject a liquid acting to make a coloring material in the ink insoluble or coagulating the same, for forming a printing dot on a printing medium by the ink ejected from said printing head and forming a liquid dot on said printing medium by the liquid ejected from said liquid ejecting head, characterized by comprising the steps of: converting a relatively low resolution printing data into a printing data having a resolution higher than that of said data; effecting ejection of the ink from said printing head on the basis of said converted high resolution printing data; converting said low resolution printing data into a driving data for said liquid ejecting head; and effecting ejection of the liquid from said liquid ejecting head on the basis of said driving data.
Claim 20
Dependent Claim
37 words
An ink-jet printing method as claimed in claim 19, characterized in that said low resolution printing data is converted into the driving data for said liquid ejecting head in a form of thinned high resolution printing data.
Claim 21
Dependent Claim
36 words
An ink-jet printing method as claimed in any one of claims 17-20, characterized in that said printing head and said liquid ejecting head utilize thermal energy so as to eject said ink and said liquid, respectively.
Claim 22
Dependent Claim
54 words
An ink-jet printing method as claimed in any one of claims 17-21, characterized in that said printing head and said liquid ejecting head have electrothermal transducers causing film boiling for ejecting said ink and said liquid so that said printing head and said liquid ejecting head can eject said ink and said liquid, respectively.
Claim 23
Dependent Claim
50 words
A recording apparatus or method or apparatus or a method for controlling a recording apparatus wherein data is converted from one form to another, for example, from low to high resolution, and ejection of both ink and a print quality controlling liquid is controlled in accordance with the converted data.
Claim 24
Dependent Claim
29 words
A recording apparatus or method or apparatus or a method for controlling a recording apparatus having the features recited in any one or any combination of the preceding claims.
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