EP0317268A2
Expired / Lapsed
EP
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Image recording apparatus
Assignee: Canon Inc
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Filing: 1988-11-15
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Granted: —
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Expires: 2008-11-15
Abstract
Abstract An image recording apparatus comprising a plurality of multi-nozzle heads for forming an image according to input image forming signals (VDin), a memory means (253′) for storing data corresponding to image forming characteristics of each of the multi-nozzle heads, and a corrector means (256′) for correcting the image forming signals based on the data stored in the memory means.
Inventors
- 👤 Hiroyuki Ichikawa
- 👤 Nobuyuki Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 03:09
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/40; H04N1/401; H04N1/4015; H04N1/6016; H04N1/6022; B; B41; B41J; B41J2202/00; B41J2202/01; B41J2202/17
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
57 words
An image recording apparatus comprising: (a) a plurality of head for forming an image according to an input image forming signal; (b) memory means for storing data according to an image forming characteristic of each of said heads; and (c) correction means for correcting said image forming signal based on said data stored in said memory means.
Claim 2
Dependent Claim
57 words
An image recording apparatus comprising: (a) a plurality of head for forming an image according to an input image forming signal; (b) memory means for storing data according to an image forming characteristic of each of said heads; and (c) correction means for correcting said image forming signal based on said data stored in said memory means.
Claim 3
Dependent Claim
32 words
An image recording apparatus according to claim 1, wherein said apparatus is a color image recording apparatus, said heads being composed of a plurality of divided head arrays corresponding to color components.
Claim 4
Dependent Claim
18 words
An image recording apparatus according to claim 1, wherein said memory means comprises at least one semiconductor memory.
Claim 5
Dependent Claim
31 words
An image recording apparatus according to claim 1, further comprising binarization means for binarizing said input image forming signal and for supplying such binarized input image forming signal to said heads.
Claim 6
Dependent Claim
30 words
An image recording apparatus according to claim 4, wherein said correction means is means for correcting said input image forming signal before the latter is binarized by said binarization means.
Claim 7
Dependent Claim
25 words
An image recording apparatus according to claim 4, wherein said binarization means is means for binarizing said input image forming signal in a dither method.
Claim 8
Dependent Claim
27 words
An image recording apparatus according to claim 1, wherein each of said heads is a head for ejecting a liquid drop by film-boiling due to heat energy.
Claim 9
Dependent Claim
109 words
An image recording apparatus comprising: (a) supply means for supplying a color image signal; (b) processing means for processing said color image signal from said supply means to divide said color image signal into a plurality of color components; (c) a plurality of head arrays arranged for printing individually signals corresponding one to each of said color components divided by said processing means, each of said head arrays including a plurality of heads; (d) memory means for storing data corresponding to a printing characteristic of each said heads; and (e) control means for controlling printing conditions of each said head based on said data stored in said memory means.
Claim 10
Dependent Claim
109 words
An image recording apparatus comprising: (a) supply means for supplying a color image signal; (b) processing means for processing said color image signal from said supply means to divide said color image signal into a plurality of color components; (c) a plurality of head arrays arranged for printing individually signals corresponding one to each of said color components divided by said processing means, each of said head arrays including a plurality of heads; (d) memory means for storing data corresponding to a printing characteristic of each said heads; and (e) control means for controlling printing conditions of each said head based on said data stored in said memory means.
Claim 11
Dependent Claim
32 words
An image recording apparatus according to claim 8, wherein said memory means is capable of storing data corresponding to said printing characteristic of each said head for each of said head arrays.
Claim 12
Dependent Claim
23 words
An image recording apparatus according to claim 8, wherein said supply means includes converter means for converting a subject image into electrical signals.
Claim 13
Dependent Claim
30 words
An image recording apparatus according to claim 8, wherein said processing means is means for dividing said image signal from said supply means into yellow, magenta and cyan color components.
Claim 14
Dependent Claim
38 words
An image recording apparatus according to claim 8, further comprising binarization means for binarizing a signal corresponding to each of said color components divided by said processing means and for supplying such binarized signal to said head arrays.
Claim 15
Dependent Claim
28 words
An image recording apparatus according to claim 12, wherein said correction means is means for correcting said image signal before the latter is binarized by said binarization means.
Claim 16
Dependent Claim
25 words
An image recording apparatus according to claim 12, wherein said binarization means is means for binarizing said input image forming signal in a dither method.
Claim 17
Dependent Claim
27 words
An image recording apparatus according to claim 8, wherein each of said heads is a head for ejecting a liquid drop by film-boiling due to heat energy.
Claim 18
Dependent Claim
61 words
An image recording apparatus comprising: (a) correction means for correcting non-uniformity of an output characteristic of each of a plurality of image printing heads; (b) control means for controlling an area in which some of said heads are operative; and (c) converter means for converting a correction characteristic of said correction means according to said area controlled by said control means.
Claim 19
Dependent Claim
61 words
An image recording apparatus comprising: (a) correction means for correcting non-uniformity of an output characteristic of each of a plurality of image printing heads; (b) control means for controlling an area in which some of said heads are operative; and (c) converter means for converting a correction characteristic of said correction means according to said area controlled by said control means.
Claim 20
Dependent Claim
43 words
An image recording apparatus according to claim 16, wherein said image recording apparatus is adapted for magnifying or reducing given image data, said control means being means for controlling said area for said heads according to a multiplication rate of said image data.
Claim 21
Dependent Claim
27 words
An image recording apparatus according to claim 16, wherein said control means is means for controlling said area for said heads according to a manually operated instruction.
Claim 22
Dependent Claim
52 words
An image recording apparatus according to claim 16, wherein said correction means includes: (i) memory means for storing data corresponding to an image forming characteristic for each said head; and (ii) means for correcting non-uniformity of said output characteristic of each said head based on said data stored in said memory means.
Claim 23
Dependent Claim
16 words
An image recording apparatus according to claim 19, wherein said memory means is a semiconductor memory.
Claim 24
Dependent Claim
45 words
An image recording apparatus according to claim 18, wherein said heads is composed of n number of heads, and wherein said control means is means for selecting either all of said n number of said heads or a half said n number of said heads.
Claim 25
Dependent Claim
67 words
An image recording apparatus according to claim 19, wherein said memory means is capable of storing data concerning said non-uniformity of the output characteristic for each said head when said area for said heads is controlled by said control means and also data concerning said non-uniformity of said output characteristic for each said head when said area for said heads is not controlled by said control means.
Claim 26
Dependent Claim
27 words
An image recording apparatus according to claim 16, wherein each of said heads is a head for ejecting a liquid drop by film-boiling due to heat energy.
References Cited (Backward Citations)
No citation records indexed.
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