EP0585028A1
Expired / Lapsed
EP
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Image processing apparatus and method
Assignee: Canon Inc
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Filing: 1993-08-16
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Granted: —
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Expires: 2013-08-16
Abstract
Abstract An image processing apparatus for recording a read image upon a recording medium. If a reading width of an image reading sensor is wider than a recording width of a recording head, the apparatus controls scanning of the image sensor and the recording head. The recording head comprises uniformly aligned recording elements divided into a plurality of groups. Image data read by the image sensor is stored into a memory, then used for activating the recording elements of the recording head. The apparatus conveys a recording medium by a length corresponding to one recording element group at each scanning of the recording head. If the amount of meaningless data or recorded data of the stored data corresponds to the amount of one scanning of the recording head or more, the image sensor performs the next reading.
Inventors
- 👤 Toshihiko c/o Canon Kabushiki Kaisha Otsubo
- 👤 Yuji c/o Canon Kabushiki Kaisha Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 19:36
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/126; H04N1/128; G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K15/102; G06K15/105; H04N1/17; H04N1/19; H04N1/191; H04N1/1911; H04N1/32; H04N1/32358; H04N1/32443; H04N1/32448; H04N1/40; H04N1/40025; H04N1/40031; G06K2215/00; G06K2215/101; G06K2215/111; H04N2201/00; H04N2201/0077; H04N2201/0081; H04N2201/0082; H04N2201/04; H04N2201/047; H04N2201/04753; H04N2201/04755; H04N2201/32; H04N2201/3285; H04N2201/329; H04N2201/3294
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
135 words
An image processing apparatus which records a multi-level image by scanning of a recording head having an array of M-pixel recording elements divided into N groups, and by conveying a recording medium by a width of one group at one scanning of the recording head, comprising: image reading means for reading an original image in band units, the band having a width corresponding to a width of the array of M-pixel recording elements; memory means for storing read image for at least two band units; recording data generation means for generating binary data corresponding to the respective groups of the recording head in accordance with the image data stored in said memory means; and control means for supplying the binary data generated by said recording data generation means to corresponding groups of the recording head.
Claim 2
Dependent Claim
34 words
The apparatus according to claim 1, wherein said image reading means is activated when amount of recorded data or meaningless image data corresponds to amount of scannings for the N-groups of the recording head.
Claim 3
Dependent Claim
23 words
The apparatus according to claim 1, wherein said image reading means includes means for converting the read image data into N+1 gradation data.
Claim 4
Dependent Claim
41 words
The apparatus according to claim 1, wherein when a density level of an object pixel to be recorded is d(1 ≦ d ≦ N), said control means activates recording corresponding elements in from first to d-th groups of the recording head.
Claim 5
Dependent Claim
69 words
The apparatus according to claim 1, wherein when a density level of an object pixel to be recorded is d (1 ≦ d ≦ N), said control means sequentially activates corresponding recording elements in d-groups of the recording head from a group next to i-th group (1 ≦ i ≦ N) having recording means for completing a density of a previous pixel of the object pixel to be recorded.
Claim 6
Dependent Claim
152 words
An image processing apparatus which records a multi-level image by scanning of a recording head having an array of M-pixel recording elements divided into N groups, and by conveying a recording medium by a width of one group at one scanning of the recording head, comprising: image reading means for reading an original image in band units, the band having a width corresponding to a width of the array of M-pixel recording elements; recording data generation means for generating binary data corresponding to the respective groups of the recording head in accordance with image data read by said image reading means; memory means for storing the binary data generated by said recording data generation means for the respective groups of the recording head; and control means for supplying the binary data for the respective groups of the recording head stored in said memory means to the groups of the recording head respectively.
Claim 7
Dependent Claim
19 words
The apparatus according to claim 6, wherein each of said M-recording elements records a pixel by discharging an ink.
Claim 8
Dependent Claim
128 words
An image processing apparatus comprising: reading means, having reading elements of P-dot lines, for reading an original image by scanning; a recording head having M-recording elements divided into N-recording groups (N ≧ 2); convey means for conveying a predetermined recording medium by one recording group width at one scanning of said recording head; memory means for storing read image data for at least two scannings of said reading means so as to provide the image data to said recording head; and control means for activating said reading means when there is no image data to be recorded for one scanning of said recording head or amount of recorded image data or meaningless image data in said memory means corresponds to amount of one scanning of said recording head.
Claim 9
Independent Claim
17 words
The apparatus according to either of claims 1 or 7, wherein said M-recording elements are uniformly aligned.
Claim 10
Dependent Claim
15 words
The apparatus according to claim 9, wherein said recording head has an ink jet nozzle.
Claim 11
Independent Claim
25 words
The apparatus according to either of claims 1 or 10, wherein the recording elements or the nozzle discharge or discharges an ink by thermal energy.
Claim 12
Independent Claim
17 words
The apparatus according to either of claims 1 or 7, wherein said M-recording elements are equally divided.
Claim 13
Dependent Claim
68 words
The apparatus according to claim 7, further comprising N+1 level processing means for converting respective pixel data of the image data stored in said memory means into N+1 level data, wherein said control means includes activation means for activating corresponding recording elements in the respective recording groups of said recording head at a predetermined timing based on the N+1 leveled pixel data converted by said N+1 processing means.
Claim 14
Dependent Claim
38 words
The apparatus according to claim 13, wherein when the N+1 level pixel data has value i (1 ≦ i ≦ N), said activation means activates corresponding recording elements in from first to i-th groups of the recording head.
Claim 15
Dependent Claim
65 words
The apparatus according to claim 13, wherein when the N+1 level pixel data has value i (1 ≦ i ≦ N), said activation means activates corresponding recording elements in i-groups of the recording head from a group next to j-th group (1 ≦ j ≦ N) having a recording element for completing a density of a previous pixel of an object pixel to be recorded.
Claim 16
Independent Claim
136 words
A method for controlling an image processing apparatus comprising reading means, having a reading element for P-dot line, for reading an original image by scanning, a recording head having M-recording elements divided into N-recording groups (N ≧ 2), and memory means for storing image data read by said reading means so as to record the data by said recording head, comprising the steps of: conveying a predetermined recording medium by one recording group width at one scanning of said recording head; and storing the read image data into said memory means by activating said reading means when there is no image data to be recorded for one scanning of said recording head or amount of recorded image data or meaningless image data in said memory means corresponds to amount of one scanning of said recording head.
Claim 17
Dependent Claim
59 words
The method according to claim 16, further comprising the steps of: converting respective pixel data of the image data stored in said memory means into N+1 level data; and activating corresponding recording elements in the respective recording groups of said recording head at a predetermined timing based on the N+1 leveled pixel data converted by said N+1 processing means.
Claim 18
Dependent Claim
40 words
The method according to claim 16, wherein, in the activating step, when the N+1 level pixel data has value i (1 ≦ i ≦ N), corresponding recording elements in from first to i-th groups of the recording head are activated.
Claim 19
Dependent Claim
67 words
The method according to claim 16, wherein, in the activating step, when the N+1 level pixel data has value i (1 ≦ i ≦ N), corresponding recording elements in i-groups of the recording head are activated from a group next to j-th group (1 ≦ j ≦ N) having a recording element for completing a density of a previous pixel of an object pixel to be recorded.
Claim 20
Dependent Claim
85 words
An image processing apparatus which records an image read by scanning of a reading hand on a recording medium by scanning of a recording head, comprising: read-scanning means for sequentially moving the reading head relatively to an original so as to read original image; and record-scanning means for moving said recording head relative to an area of the recording medium plural times in response to one read-scanning of the reading head by said read-scanning means so as to record the read image on the area.
Claim 21
Dependent Claim
33 words
The apparatus according to claim 20, wherein said record-scanning means performs the record-scanning of said recording head plural times using different portions of said recording head upon the area of the recording medium.
Claim 22
Dependent Claim
18 words
The apparatus according to claim 21, wherein the plural record-scannings of said recording head records a gradation image.
Claim 23
Dependent Claim
30 words
The apparatus according to claim 20, further comprising storage means for storing the image read in accordance with at least two read-scannings of said reading head by said read-scanning means.
Claim 24
Dependent Claim
13 words
The apparatus according to claim 20, wherein said recording head discharges an ink.
Claim 25
Dependent Claim
16 words
The apparatus according to claim 24, wherein said recording head discharges an ink by thermal energy.
Claim 26
Dependent Claim
35 words
The apparatus according to claim 20, further comprising convey means for conveying- the recording medium by a width of the predetermined area in a direction different from that of the record-scanning of said recording head.
Claim 27
Dependent Claim
80 words
An image processing method for recording a read image, comprising the steps of: read-scanning the reading head relatively tc an original so as to read original image; record-scanning said recording head relative to an area of the recording medium plural times in response to one read-scanning of the reading head by said read-scanning step so as to record the read image on the area; and repeating said read-scanning step and said record-scanning step so as to complete the original image.
Claim 28
Dependent Claim
35 words
The method according to claim 27, wherein in the record-scanning step, the record-scanning of said recording head is performed plural times using different portions of said recording head upon the area of the recording medium.
Claim 29
Dependent Claim
22 words
The method according to claim 28, wherein the plural record-scannings of said recording head in the record-scanning step records a gradation image.
Claim 30
Dependent Claim
40 words
The method according to either claim 20 or claim 27, wherein in the record-scanning step, the record-scanning of said recording head is performed plural times upon the area of the recording medium using a same portion of said recording head.
Claim 31
Dependent Claim
22 words
The method according to claim 30, wherein the plural record-scannings of said recording head in the record-scanning step records an emphasized image.
Claim 32
Dependent Claim
30 words
The method according to claim 27, further comprising the step of: storing the image read in accordance with at least two read-scannings of said reading head in the read-scanning step.
Claim 33
Dependent Claim
13 words
The method according to claim 27, wherein said recording head discharges an ink.
Claim 34
Dependent Claim
16 words
The method according to claim 33, wherein said recording head discharges an ink by thermal energy.
Claim 35
Dependent Claim
35 words
The method according to claim 27, further comprising the step of: conveying the recording medium by a width of the predetermined area in a direction different from that of the record-scanning of said recording head.
References Cited (Backward Citations)
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