EP0440458A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Recording apparatus and recording method utilizing ink jet recording head
Assignee: Canon Inc
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Filing: 1991-01-30
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Granted: —
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Expires: 2011-01-30
Abstract
Abstract There is disclosed an ink jet recording apparatus capable of providing high quality image in stable manner for image signals of different transfer rates. A detector detects the receiving rate of the image signal supplied to the ink jet recording apparatus, and at least one of driving voltage, driving current, pulse duration, driving frequency and driving signal wave form is modified according to the detected receiving rate of the image signal.
Inventors
- 👤 Haruhiko C/O Canon Kabushiki Kaisha Moriguchi
- 👤 Toshimitsu C/O Canon Kabushiki Kaisha Danzuka
- 👤 Yasushi C/O Canon Kabushiki Kaisha Miura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 23:06
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/23; H04N1/2307; H04N1/233; H04N1/40; H04N1/40025; H04N1/40031
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
64 words
An ink jet recording apparatus for effecting image recording with a recording head for discharging ink from discharge openings, comprising: reception means for receiving an image signal; reception rate detecting means for detecting the receiving rate of the image signal received by said reception means; and drive control means for controlling said recording head according to the receiving rate detected by said detecting means.
Claim 2
Dependent Claim
27 words
An apparatus according to claim 1, wherein said drive control means is adapted to vary a drive signal for said recording head, according to said receiving rate.
Claim 3
Dependent Claim
41 words
An apparatus according to claim 2, wherein said drive control means is adapted to vary at least one of voltage, current, pulse width, frequency and signal wave form of the drive signal for the recording head, according to said receiving rate.
Claim 4
Dependent Claim
26 words
An apparatus according to claim 1, wherein said drive control means is adapted to vary the temperature of said recording head, according to said receiving rate.
Claim 5
Dependent Claim
57 words
An apparatus according to claim 1, wherein said recording head comprises plural discharge openings; and thermal energy generating means provided respectively corresponding to said discharge openings and each adapted to induce a state change in ink by heat thereby discharging said ink from said discharge opening and forming a flying liquid droplet based on said state change.
Claim 6
Dependent Claim
21 words
An apparatus according to claim 5, wherein said thermal energy generating means of said recording head are heat energy generating resistors.
Claim 7
Dependent Claim
27 words
An apparatus according to claim 1, further comprising a communication line connected to said reception means and adapted to transmit the image signal to said reception means.
Claim 8
Dependent Claim
20 words
An apparatus according to claim 1, adapted to effect recording operations in a facsimile mode and in a printer mode.
Claim 9
Dependent Claim
22 words
An apparatus according to claim 8, wherein the receiving rate in said facsimile mode is lower than that in said printer mode.
Claim 10
Dependent Claim
23 words
An apparatus according to claim 1, wherein said recording head is adapted to effect color image recording by discharging inks of plural colors.
Claim 11
Dependent Claim
69 words
An ink jet recording apparatus for effecting image recording with a recording head for discharging ink from discharge openings, comprising: reception means for receiving an image signal; recording speed detecting means for detecting the recording speed for driving said recording head by the image signal received by said reception means; and drive control means for controlling said recording head according to the recording speed detected by said detecting means.
Claim 12
Dependent Claim
27 words
An apparatus according to claim 11, wherein said drive control means is adapted to vary a drive signal for said recording head, according to said recording speed.
Claim 13
Dependent Claim
41 words
An apparatus according to claim 12, wherein said drive control means is adapted to vary at least one of voltage, current, pulse width, frequency and signal wave form of the drive signal for the recording head, according to said recording speed.
Claim 14
Dependent Claim
26 words
An apparatus according to claim 11, wherein said drive control means is adapted to vary the temperature of said recording head, according to said recording speed.
Claim 15
Dependent Claim
57 words
An apparatus according to claim 11, wherein said recording head comprises plural discharge openings; and thermal energy generating means provided respectively corresponding to said discharge openings and each adapted to induce a state change in ink by heat thereby discharging said ink from said discharge opening and forming a flying liquid droplet based on said state change.
Claim 16
Dependent Claim
21 words
An apparatus according to claim 15, wherein said thermal energy generating means of said recording head are heat energy generating resistors.
Claim 17
Dependent Claim
27 words
An apparatus according to claim 11, further comprising a communication line connected to said reception means and adapted to transmit the image signal to said reception means.
Claim 18
Dependent Claim
20 words
An apparatus according to claim 11, adapted to effect recording operations in a facsimile mode and in a printer mode.
Claim 19
Dependent Claim
22 words
An apparatus according to claim 18, wherein the receiving rate in said facsimile mode is lower than that in said printer mode.
Claim 20
Dependent Claim
23 words
An apparatus according to claim 11, wherein said recording head is adapted to effect color image recording by discharging inks of plural colors.
Claim 21
Dependent Claim
39 words
A recording method with a recording head for discharging ink from discharge openings, comprising steps of: receiving an image signal; detecting the receiving rate of said image signal; and controlling said recording head according to the detected receiving rate.
Claim 22
Dependent Claim
25 words
A method according to claim 21, wherein said controlling step is adapted to a drive signal for said recording head, according to said receiving rate.
Claim 23
Dependent Claim
25 words
A method according to claim 21, wherein said controlling step is adapted to vary the temperature of said recording head, according to said receiving rate.
Claim 24
Dependent Claim
57 words
A method according to claim 21, wherein said recording head comprises plural discharge openings; and thermal energy generating means provided respectively corresponding to said discharge openings and each adapted to induce a state change in ink by heat thereby discharging said ink from said discharge opening and forming a flying liquid droplet based on said state change.
Claim 25
Dependent Claim
45 words
A recording method with a recording head for discharging ink from discharge openings, comprising steps of: receiving an image signal; detecting the recording speed for driving said recording head by the received image signal; and controlling said recording head according to the detected recording speed.
Claim 26
Dependent Claim
26 words
A method according to claim 25, wherein said controlling step is adapted to vary a drive signal for said recording head, according to said recording speed.
Claim 27
Dependent Claim
25 words
A method according to claim 25, wherein said controlling step is adapted to vary the temperature of said recording head, according to said recording speed.
Claim 28
Dependent Claim
57 words
A method according to claim 25, wherein said recording head comprises plural discharge openings; and thermal energy generating means provided respectively corresponding to said discharge openings and each adapted to induce a state change in ink by heat thereby discharging said ink from said discharge opening and forming a flying liquid droplet based on said state change.
Claim 29
Dependent Claim
45 words
An ink jet recording apparatus for forming an image by discharging liquid droplets from a small discharge opening to a recording material according to an entered image signal, comprising control means for controlling a recording head according to the receiving rate of said image signal.
Claim 30
Dependent Claim
49 words
An apparatus according to claim 29, wherein said recording head comprises, as an ink discharge energy generating element, a thermal energy generating element for inducing membrane boiling in ink, and said control means is adapted to vary the driving voltage according to the receiving rate of said image signal.
Claim 31
Dependent Claim
52 words
An apparatus according to claim 29, wherein said recording head comprises, as an ink discharge energy generating element, a thermal energy generating element for inducing membrane boiling in ink, and said control means is adapted to vary the temperature of said recording head according to the receiving rate of said image signal.
Claim 32
Dependent Claim
49 words
An apparatus according to claim 29, wherein said recording head comprises, as an ink discharge energy generating element, a thermal energy generating element for inducing membrane boiling in ink, and said control means is adapted to vary the driving frequency according to the receiving rate of said image signal.
Claim 33
Dependent Claim
34 words
An apparatus according to claim 29, connected to a main unit having a facsimile mode and another print mode, wherein said control means is adapted to set different driving conditions respectively for different modes.
References Cited (Backward Citations)
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