Patent US4775868A successfully refreshed from Google Patents.
US4775868A
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US
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Recording apparatus
Assignee: Canon Inc
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Filing: 1987-12-15
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Granted: 1988-10-04
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Expires: 2007-12-15
Abstract
Abstract A recording apparatus with plural recording units, such as an ink jet printer with plural ink jet recording heads, in which the number of flexible cables and the number of signal lines for driving the plural recording units are reduced by the common use of said signal lines for plural recording units.
Inventors
- 👤 Susumu Sugiura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:17
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/145; G; G01; G01D; G01D9/00; G01D9/28; G01D9/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
207 words
Color image recording apparatus comprising: recording means including carriage-mounted reciprocative recording heads respectively allotted to different colors and arranged in a main scanning direction, each recording head being composed of a plurality of recording elements for recording in accordance with recording data; a first group of signal lines for selecting one of said recording heads, the numbr of said first group of signal lines corresponding to the number of recording heads; a second group of signal lines for selecting recording elements in one recording head, the number of said second group of signal lines corresponding to the number of recording elements in one recording head; control means for sequentially selecting each line of said first group of signal lines and for sequentially selecting each line of said second group of signal lines so that the sequential selection for all of the lines of said second group can be completed while one line of said first group is selected; first selection means for selecting a plurality of recording data in synchronism with the selection of said first group of signal lines; and second selection means for sequentially selecting recording data, selected by said first selection means, in synchronism with the selection of said second group of signal lines.
Claim 2
Dependent Claim
207 words
Color image recording apparatus comprising: recording means including carriage-mounted reciprocative recording heads respectively allotted to different colors and arranged in a main scanning direction, each recording head being composed of a plurality of recording elements for recording in accordance with recording data; a first group of signal lines for selecting one of said recording heads, the numbr of said first group of signal lines corresponding to the number of recording heads; a second group of signal lines for selecting recording elements in one recording head, the number of said second group of signal lines corresponding to the number of recording elements in one recording head; control means for sequentially selecting each line of said first group of signal lines and for sequentially selecting each line of said second group of signal lines so that the sequential selection for all of the lines of said second group can be completed while one line of said first group is selected; first selection means for selecting a plurality of recording data in synchronism with the selection of said first group of signal lines; and second selection means for sequentially selecting recording data, selected by said first selection means, in synchronism with the selection of said second group of signal lines.
Claim 3
Dependent Claim
29 words
Color image recording apparatus according to claim 1, wherein said second group of signal lines carries a drive control signal representing whether or not a recording element is driven.
Claim 4
Dependent Claim
30 words
Color image recording apparatus according to claim 1, wherein said first group of signal lines makes connections between the recording elements and a power supply associated with the recording elements.
Claim 5
Dependent Claim
25 words
Color image recording apparatus according to claim 1, wherein said plurality of recording elements are arranged in a line perpendicular to the main scanning direction.
Claim 6
Dependent Claim
21 words
Color image recording apparatus, according to claim 1, wherein said recording heads are respectively adapted to record yellow, magneta and cyan.
Claim 7
Dependent Claim
100 words
Recording apparatus according to claim 1, further comprising: said recording means being composed of a heater elements; driving means for sequentially driving the heater elements by groups of k heater elements said; and power supply means for simultaneously supplying power to k heater elements in each group; wherein said power supply means is operated in such a manner as to satisfy the following relation, n/k×t.sub.a ≦t.sub.a +t.sub.b wherein t a is an interval while one heater element is being power supplied once and t b is an interval to be required for cooling the heater element after the power supply.
Claim 8
Dependent Claim
11 words
Recording apparatus according to claim 6, wherein said k is 1.
Claim 9
Dependent Claim
23 words
Recording apparatus according to claim 6, wherein said recording means includes p recording heads, each recording head being composed of m heater elements.
Claim 10
Dependent Claim
33 words
Recording apparatus according to claim 8, wherein said power supply means comprises first selection means for selecting one of the recording heads and second selection means for selecting one of the heater elements.
Claim 11
Dependent Claim
28 words
Recording apparatus according to claim 9, wherein said first selection means is composed of p signal lines and said second selection means is composed of m signal lines.
Claim 12
Dependent Claim
17 words
Recording apparatus according to claim 8, wherein said recording heads are respectively adapted to record different colors.
Claim 13
Dependent Claim
15 words
Recording apparatus according to claim 11, wherein said different colors are yellow, magneta and cyan.
Claim 14
Dependent Claim
17 words
Recording apparatus according to claim 6, wherein said heater elements discharge ink droplets upon the heating thereof.
Claim 15
Dependent Claim
23 words
Color image recording apparatus according to claim 1, wherein said first and second selection means operate in synchronism with a common clock signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |