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EP0631257A2
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EP
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Ink jet recording method and apparatus
Assignee: Canon Inc
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Filing: 1994-05-26
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Granted: —
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Expires: 2014-05-26
Abstract
Abstract A plurality of recording heads capable of ejecting inks of different colors is reciprocated relative to a recording material to print ink dots on the recording material while effecting main scanning in the forward and the backward pass thereof. A plurality of thinning patterns produced by preparing m x n unit picture element groups and arraying these unit groups in such a manner that the groups avoid mutually adjoining and assume a mutually complementary relation is used to effect a plurality of rounds of main scanning in the forward and the backward pass over an area which can be printed by one round of main scanning, record a thinned image, and complete the recording of an image. The array of picture element groups in the thinning patterns is determined so that the groups may mutually adjoin relative to the direction of main scanning. <IMAGE>
Inventors
- 👤 Shigeyasu C/O Canon Kabushiki Kaisha Nagoshi
- 👤 Makoto C/O Canon Kabushiki Kaisha Torigoe
- 👤 Hiromitsu C/O Canon Kabushiki Kaisha Hirabayashi
- 👤 Miyuki C/O Canon Kabushiki Kaisha Matsubara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:25
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102; G06K15/105; G06K15/107; B; B41; B41J; B41J19/00; B41J19/14; B41J19/142; B41J19/145; G06K2215/00; G06K2215/0002; G06K2215/0062; G06K2215/0071; G06K2215/0074; G06K2215/0082; G06K2215/0094; G06K2215/101; G06K2215/111
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
94 words
An ink jet recording method in which plural cycles of bidirectional printing scans are carried out for an image area by use of a multi-head in which a plurality of ink jet ports are arrayed while paper feed is relatively and successively carried out so as to complete recording, characterized in that pixel arrays adapted to be used respectively for said recording scans have a complementary relationship, and at least those of said pixel arrays adapted to be used recording scans in one direction are adjacent to each other in a recording scanning direction.
Claim 2
Dependent Claim
24 words
An ink jet recording method as set forth in claim 1, wherein a plurality of droplets in an identical color are recorded in duplication.
Claim 3
Dependent Claim
38 words
An ink jet recording method as set forth in claim 1 or 2, wherein that said multi-head changes ink in its phase by use of thermal energy so as ink droplets are jetted from said ink jet ports.
Claim 4
Dependent Claim
127 words
An ink jet recording apparatus in which plural cycles of bidirectional printing scans are carried out for an image area by use of a multi-head in which a plurality of ink jet ports are arrayed while paper feed is relatively and successively carried out so as to complete a printing image on a sheet surface, characterized in that split and interlaced pixel arrays adapted to be used respectively for said recording scans have a complementary relationship, and said split and interlaced pixel arrays have split printing control means in which rectangular shape basic pixel groups each composed of a number m (m ≧ 1) of longitudinal pixels and a number n of lateral pixel, where m < n, are arrayed in accordance with a predetermined array rule.
Claim 5
Dependent Claim
60 words
An ink jet recording apparatus as set forth in claim 4, wherein said array rule for said rectangular shape basic groups each composed of the number m of longitudinal pixels and the number n of lateral pixels is such that a number p of pixels which are successive in a longitudinal direction, satisfies at least m < p < n.
Claim 6
Dependent Claim
37 words
An ink jet recording apparatus as set forth in claim 4 or 5, wherein said multi-head changes ink in its phase by use of thermal energy so as ink droplets are jetted from said ink jet ports.
Claim 7
Dependent Claim
127 words
An ink jet recording method in which plural cycles of bidirectional printing scans are carried out for an image area by use of a multi-head in which a plurality of ink jet ports are arrayed while paper feed is relatively and successively carried out so as to complete a printing image on a sheet surface, characterized in that split and interlaced pixel arrays adapted to be used respectively for said recording scans have a complementary relationship, and said split and interlaced pixel arrays have split printing control means in which rectangular shape basic pixel groups each composed of a number m (m ≧ 1) of longitudinal pixels and a number n of lateral pixel, where m < n, are arrayed in accordance with a predetermined array rule.
Claim 8
Dependent Claim
60 words
An ink jet recording method as set forth in claim 7, wherein said array rule for said rectangular shape basic groups each composed of the number m of longitudinal pixels and the number n of lateral pixels is such that a number p of pixels which are successive in a longitudinal direction, satisfies at least m < p < n.
Claim 9
Dependent Claim
37 words
An ink jet recording method as set forth in claim 7 or 8, wherein said multi-head changes ink in its phase by use of thermal energy so as ink droplets are jetted from said ink jet ports.
Claim 10
Dependent Claim
158 words
An ink jet recording method in which a recording head in which a plurality of ink jet elements are arrayed is reciprocated, relative to a recording medium so as to carry out plural cycles of recording scans for one area on said recording medium so as to complete recording on said area, characterized in that said recording scans are carried out in on-going and in-coming directions of reciprocation of said recording head, interlaced images of pixel arrays having a complementary relationship therebetween given by said plural cycles of recording scans are successively recorded so as to complete an image in said area, and a number of pixels in total which are recorded during a recording scan in one of said on-going and in-coming directions of the reciprocation among said plural cycles of recording scans, is different from a number of pixels in total recorded during a recording scan in the other one of said on-going and in-coming directions.
Claim 11
Dependent Claim
20 words
An ink jet recording method as set forth in claim 10, wherein said plural cycles of recording scans are odd.
Claim 12
Dependent Claim
37 words
An ink jet recording method as set forth in claim 10 or 11, wherein said multi-head changes ink in its phase by use of thermal energy so as ink droplets are jetted from said ink jet ports.
Claim 13
Dependent Claim
75 words
An ink test printing method which can carry out a bidirectional printing mode in which printing is made by on-going and in-coming scans of a multi-head for an area, characterized in that printing in an on-going scanning step and in-coming scanning step to which divided data constituting data for forming test patterns to be printed for said area are respectively given provides a test pattern printing mode for forming the test patterns in said area.
Claim 14
Dependent Claim
26 words
An ink test printing method as set forth in claim 13, wherein said test patterns are line-like patterns in said both on-going and in-coming scanning directions.
Claim 15
Dependent Claim
40 words
An ink test printing method as set forth in claim 14, wherein said line-like patterns in said on-going and in-coming scanning directions are arranged in a plural number, perpendicular to said on-going and in-coming scanning directions, with fine gaps therebetween.
Claim 16
Dependent Claim
28 words
An ink test printing method as set forth in claim 13, wherein said test patterns are substantially band-like line patterns in said both on-going and in-coming scanning directions.
Claim 17
Dependent Claim
66 words
An ink test printing method as set forth in any one of claims 13 to 16, wherein said test patterns are line patterns in said on-going and in-coming scanning directions which are given by the printing during said on-going and in-coming scanning processes, that is, the printing such that between printing during at least one of scanning processes there is present printing during other scanning process.
Claim 18
Dependent Claim
65 words
An ink test printing method as set forth in any one of claims 13 to 17, wherein the divided data for said data are more than four kinds of divided data which are given, in a plural number, to said on-going scanning process and said in-coming scanning process, respectively, so as to form said line patterns during a plurality of on-going and in-coming scanning processes.
Claim 19
Dependent Claim
42 words
An ink test printing method as set forth in any one of claims 13 to 18, wherein said multi-head is an ink jet head incorporating a plurality of ink jet ports in a direction crossing to said on-going and in-coming scanning directions.
Claim 20
Dependent Claim
58 words
An ink test printing method as set forth in any one of claims 13 to 19, wherein said multi-head comprises a plurality of head parts which are integrally incorporated with one another and arranged at adjusted positional intervals, the registration adjustment of each of said head parts is determined by ink test for one of said head patterns.
Claim 21
Dependent Claim
42 words
An ink test printing method as set forth in any one of claims 13 to 20, wherein a plurality of said test patterns obtained by changing on-going and in-coming registration timing for said divided data in a range less than 1.00 pixel.
Claim 22
Dependent Claim
34 words
An ink test printing method as set forth in claim 21, further comprising a correcting process by which said on-going and in-coming registration timing can be changed in a range less than 1.00 pixel.
Claim 23
Dependent Claim
50 words
An ink test printing method as set forth in any one of claims 13 to 22, wherein said divided data are obtained in such a way that data carried out during on-going and in-coming scans are a plurality of dots which are successively laid in one of said scanning directions.
Claim 24
Dependent Claim
56 words
An ink test printing method as set forth in any one of claims 13 to 23, wherein said test pattern printing mode has a plurality of said one area test patterns of different kinds, and therefore, a test pattern in the test pattern printing mode can be designated by respectively designating said one area test patterns.
Claim 25
Dependent Claim
64 words
An ink test printing method as set forth in claim 24, wherein said plurality of one area test patterns comprises a first test pattern which has, as test printing areas, a center area and left and right areas of a recording medium, and a second test patterns having a number of test printing areas which is less than that of said first test pattern.
Claim 26
Dependent Claim
85 words
An ink test printing method which can carry out a bidirectional mode wherein printing by on-going and in-coming scans of a plural color multi-head is made for one area, characterized by a test pattern printing mode in which a multi-color overlapped test pattern is formed in one area by printing in on-going and in-coming scanning processes to which divided data, sorted by colors, of data constituting a test pattern to be printed in said one area, comprising a plurality of overlapped colors are respectively given.
Claim 27
Dependent Claim
114 words
An ink jet recording apparatus comprising a carriage mounted thereon with a multi-ink jet head and carrying out on-going and in-coming scans; a conveying means for conveying a recording medium in a direction crossing a scanning direction, and a memory means storing therein a bidirectional mode in which printing is made for one area by both said on-going and in-coming scanning processes, and test patterns for indicating on-going and in-coming registrations, wherein said memory means stores therein on-going scanning data and in-coming scanning data which are divided data of data constituting test patterns which is to be printed in said one area in a stopping condition of said recording medium, as said test patterns.
Claim 28
Dependent Claim
26 words
An ink jet recording apparatus as set forth in claim 27, wherein said test patterns are line-like test patterns in said on-going and in-coming scanning directions.
Claim 29
Dependent Claim
48 words
An ink jet recording apparatus as set forth in claim 28, wherein said test patterns are composed of a plurality of line-like patterns in said on-going and in-coming scanning directions which are arranged with slight gaps therebetween in a direction perpendicular to said on-going and in-coming scanning directions.
Claim 30
Dependent Claim
26 words
An ink jet recording apparatus as set forth in claim 27, wherein said test patterns are substantial band-like patterns in said on-going and in-coming scanning directions.
Claim 31
Dependent Claim
65 words
An ink jet recording apparatus as set forth in any one of claims 27 to 30, wherein said test patterns are line patterns in said on-going and in-coming directions which are given by the printing during said on-going and in-coming scanning processes, that is, the printing such that between printing during at least one of scanning processes there is present printing during other scanning process.
Claim 32
Dependent Claim
65 words
An ink jet recording apparatus as set forth in any one of claims 27 to 31, wherein the divided data for said data are more than four kinds of divided data which are given, in a plural number, to said on-going scanning process and said in-coming scanning process, respectively, so as to form said line patterns during a plurality of on-going and in-coming scanning processes.
Claim 33
Dependent Claim
88 words
An ink jet recording apparatus as set forth in any one of claims 27 to 32, wherein said multi-ink jet head comprises a plurality of ink jet head parts which are integrally incorporated with one another and arranged at adjusted positional intervals, each of said head parts incorporating a plurality of ink jet ports arranged in a direction crossing said on-going and in-coming directions, and a means for determining registration adjustment for each of said head parts in accordance with ink tests for one of said head parts.
Claim 34
Dependent Claim
49 words
An ink jet recording apparatus as set forth in any one of claims 27 to 33, wherein said apparatus comprises means for forming a plurality of said test patterns having on-going and in-coming registration timing for said divided data which is changed in a range less than 1.00 pixel.
Claim 35
Dependent Claim
32 words
An ink jet recording apparatus as set forth in claim 34, wherein said apparatus comprises correction means for changing said on-going and in-coming registration timing in a range less than 1.00 pixel.
Claim 36
Dependent Claim
47 words
An ink jet recording apparatus as set forth in any one of claims 27 to 35, wherein said divided data is obtained by dividing data carried out respectively during on-going and in-coming scans so that a plurality of dots are laid successively one of said scanning directions.
Claim 37
Dependent Claim
56 words
An ink jet recording apparatus as set forth in any one of claims 27 to 36, wherein said memory means comprises designating means comprises a plurality of said one area test patterns which are different from one another, for carrying out test patterns printing by use of either of said plurality of one area test patterns.
Claim 38
Dependent Claim
64 words
An ink jet recording apparatus as set forth in claim 37, wherein said plurality of one area test patterns comprises a first test pattern which has, as test printing areas, a center area and left and right areas of a recording medium, and a second test patterns having a number of test printing areas which is less than that of said first test pattern.
Claim 39
Dependent Claim
40 words
An ink jet recording apparatus as set forth in any one of claims 27 to 38, wherein said apparatus comprises means for automatically reading a printing condition of said one area test patterns and for automatically carrying out registration adjustment.
Claim 40
Dependent Claim
79 words
An ink test printing method which can carry out bidirectional mode in which printing is made for one area during on-going and in-coming scans of a multi-dot head, characterized by a test pattern printing mode in which one area test patterns that are printed with a predetermined registration during on-going and in-coming scanning processes to which divided data of data constituting test patterns to be printed for said one area are respectively given, are formed together with designating marks.
Claim 41
Dependent Claim
111 words
An ink jet recording method as set forth in claim 40, wherein said test patterns are band-like patterns in said on-going and in-coming scanning directions which are given by the printing during said on-going and in-coming scanning processes, that is, the printing such that between printing during at least one of scanning processes there is present printing during other scanning process, and said test pattern printing mode forms a plurality of said test patterns having on-going and in-coming registration timings for said divided data, which is changed in positive and negative directions in a range less than 1.00 pixel, around printing during on-going and in-coming scanning processes with a designated registration.
Claim 42
Dependent Claim
55 words
An apparatus for carrying out an ink test printing process claimed in claim 40, further comprising means for changing registrations during on-going and in-coming scanning processes corresponding to said designated marks into recording registrations given by said apparatus or registrations designated in said test pattern printing mode, by an operation corresponding to said designated marks.
Claim 43
Dependent Claim
94 words
A printing apparatus as set forth in claim 42, further comprising means, having a first test pattern containing, as test printing areas, a center area of a recording medium for said test pattern printing mode, and respective areas on left and right sides of said center area of said recording medium, a second test pattern containing a number of test printing areas which is less than that of said first test pattern, for respectively designating a plurality of one area test patterns so as to designate test patterns in said test pattern printing mode.
References Cited (Backward Citations)
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