EP0442711A1
Expired / Lapsed
EP
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Recording apparatus for performing recording with ink jet recording head
Assignee: Canon Inc
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Filing: 1991-02-13
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Granted: —
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Expires: 2011-02-13
Abstract
Abstract A recording apparatus for performing recording with an ink jet recording head (9) capable of ejecting ink on to a recording medium is disclosed. The recording apparatus includes an ink receiving section (51) disposed at a position to be able to oppose an orifice-formed face of said recording head (9), a preliminary ejection unit for causing ink ejection from discharging orifices toward said ink receiving section (51) by driving said recording head to remove causes of defective ink ejection, dry absorption unit (53) for absorbing ink remaining in said ink receiving section as a result of ink ejection by said preliminary ejection unit, and dry ejection control unit for causing ink absorption by driving said dry absorption unit (53) when the number of times of ejection by said preliminary ejection unit exceeds a predetermined number after absorption previously executed by said dry absorption unit (53) during recording.
Inventors
- 👤 Yoshiyuki C/O Canon Kabushiki Kaisha Shimamura
- 👤 Kazuya C/O Canon Kabushiki Kaisha Iwata
- 👤 Jun C/O Canon Kabushiki Kaisha Katayanagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:22
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/165; B41J2/16517; B41J2/1652
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
148 words
A recording apparatus for performing recording with an ink jet recording head capable of ejecting ink onto a recording medium for at least one page comprising: an ink receiving section disposed at a position to be able to oppose an orifice-formed face of said recording head; preliminary ejection means for causing ink ejection from discharging orifices toward said ink receiving section by driving said recording head to remove causes of defective ink ejection; dry absorption means for absorbing ink remaining in said ink receiving section as a result of ink ejection by said preliminary ejection means; and first dry ejection control means for causing ink absorption by driving said dry absorption means when the number of times of ejection by said preliminary ejection means exceeds a predetermined number n1 after absorption previously executed by said dry absorption means during recording on said recording medium by said recording head.
Claim 2
Dependent Claim
125 words
A recording apparatus for performing recording with an ink jet recording head capable of ejecting ink onto a recording medium for at least one page comprising: an ink receiving section disposed at a position to be able to oppose an orifice-formed face of said recording head; preliminary ejection means for causing ink ejection toward said ink receiving section from discharging orifices by driving said recording head to remove causes of defective ink ejection; dry absorption means for absorbing ink remaining in said ink receiving section as a result of ink ejection by said preliminary ejection means; and dry absorption control means for causing absorption by driving said dry absorption means whenever recording of one page on said recording medium by said recording head is ended.
Claim 3
Dependent Claim
155 words
A recording apparatus for performing recording with an ink jet recording head capable of ejecting ink onto a recording medium for at least one page comprising: an ink receiving section disposed at a position to be able to oppose an orifice-formed face of said recording head; preliminary ejection means for causing ink ejection toward said ink receiving section from discharging orifices by driving said recording head to remove causes of defective ink ejection; dry absorption means for absorbing ink remaining in said ink receiving section as a result of ink ejection by said preliminary ejection means; and first dry absorption control means for causing absorption by driving said dry absorption means when the number of times of ejection by said preliminary ejection means has exceeded a predetermined number after absorption executed previously by said dry absorption means at an instant of end of recording of one page on said recording medium by said recording head.
Claim 4
Dependent Claim
173 words
A recording apparatus for performing recording with an ink jet recording head capable of ejecting ink onto a recording medium for at least one page comprising: a cap formed such as to be opened and closed with respect to an orifice-formed face of said recording head and thus be able to cover said orifice-formed face; cap drive means for opening said cap at the start of driving said recording head and closing said cap when a non-driving period of said recording head exceeds a predetermined period α of time; preliminary ejection means for causing ejection of ink from discharging orifices by driving said recording head for removing causes of defective ink ejection; preliminary ejection drive means for driving said preliminary ejection means when a predetermined period β of time is exceeded after ejection executed previously by said preliminary ejection means; and preliminary ejection drive control means for controlling the time interval of closure of said cap driven by said cap drive means such that said predetermined period β of time is not included.
Claim 5
Dependent Claim
201 words
A recording apparatus for performing recording with an ink jet recording head capable of ejecting ink onto a recording medium for at least one page comprising: a cap formed such as to be opened and closed with respect to an orifice-formed face of said recording head and thus be able to cover said orifice-formed face; a cap drive means for opening said cap at the start of driving said recording head and closing said cap when a non-driving period of said recording head exceeds a predetermined period α of time; preliminary ejection means for causing ejection of ink from discharging orifices by driving said recording head for removing causes of defective ink ejection; first preliminary ejection drive means for driving said preliminary ejection means when a predetermined period β of time is exceeded after ejection exceeded previously by said preliminary ejection means; and second preliminary ejection drive means functioning, when the closed period of said cap driven by said cap drive means exceeds a predetermined period γ of time, to drive said preliminary ejection means and initializes said predetermined period β of said first preliminary ejection drive means at the time of opening of said cap by said cap drive means.
Claim 6
Dependent Claim
59 words
The recording apparatus according to claim 1, which further comprises: first recording end detection means for detecting the end of recording of the last page on said recording medium by said recording head; and second dry absorption control means for causing absorption by driving said dry absorption means when detection by said first recording end detection means is done.
Claim 7
Dependent Claim
69 words
The recording apparatus according to claim 1, which further comprises: second recording end detection means for detecting the end of recording of one page on said recording medium by said recording head; and third dry absorption control means when the number of times of discharge by said preliminary ejection means has exceeded a predetermined number n2 (where n2 ≦ n1) after absorption executed previously by said dry absorption means.
Claim 8
Dependent Claim
18 words
The recording apparatus according to claims 1, 2 or 3, wherein said ink receiving section is a cap.
Claim 9
Dependent Claim
20 words
The recording apparatus according to claims 1, 2 or 3, wherein said ink receiving section includes an ink absorbing member.
Claim 10
Dependent Claim
28 words
The recording apparatus according to claims 1, 2 or 3, wherein said dry absorption means includes a pump for providing an absorbing force to said ink receiving section.
Claim 11
Dependent Claim
28 words
The recording apparatus according to claim 1, 2, 3, 4, or 5, wherein said recording head is mounted on a carriage capable of relatively scanning said recording medium.
Claim 12
Dependent Claim
22 words
The recording apparatus according to claim 2, 3, 4, 5 or 11, wherein said recording head is replaceably mounted on said carriage.
Claim 13
Dependent Claim
67 words
The recording apparatus according to claim 1, 2, 3, 4 or 5, wherein said recording head includes a plurality of ink discharing orifices and heat energy generation means each provided for each said discharging orifice for causing thermal change of the state of ink to let ink be ejected from said discharging orifices on the basis of said state change so as to form flying ink drops.
Claim 14
Dependent Claim
28 words
The recording apparatus according to claims 1, 2, 3, 4 or 5 which further comprises interface means for inputting recording signal to be supplied to said recording head.
Claim 15
Dependent Claim
32 words
The recording apparatus according to claim 2, 3, 4, 5 or 14, wherein said interface means is connected to a document processing function unit and inputs document data as said recording signal.
Claim 16
Dependent Claim
31 words
The recording apparatus according to claim 2, 3, 4, 5 or 14, wherein said interface means is connected to a reader function section and inputs reading data as said recording signal.
Claim 17
Dependent Claim
38 words
The recording head according to claim 2 or 3, wherein said dry absorption control means includes first recording end detection means for detecting the end of recording of one page on said recording medium by said recording head.
Claim 18
Dependent Claim
40 words
The recording apparatus according to claim 3, which further comprises: second dry absorption control means for causing absorption by driving said dry absorption means when recording of the last page on said recording medium by said recording head is ended.
Claim 19
Dependent Claim
38 words
The recording head according to claim 18, wherein said second dry absorption control means includes second recording end detection means for detecting the end of recording of the last page on said recording medium by said recording head.
Claim 20
Dependent Claim
26 words
The recording apparatus according to claim 4 or 5, wherein said cap drive means includes a timer for measuring the non-drive period of said recording head.
Claim 21
Dependent Claim
26 words
The recording apparatus according to claim 4, wherein said preliminary discharge drive means includes a timer for measuring the non-drive period of said preliminary ejection means.
Claim 22
Dependent Claim
27 words
The recording apparatus according to claim 5 or 21, wherein said preliminary ejection drive control means holds said timer stopped for the closed period of said cap.
Claim 23
Dependent Claim
17 words
The recording apparatus according to claim 4 or 5, wherein said cap includes an ink absorbing member.
Claim 24
Dependent Claim
38 words
The recording apparatus according to claim 5, which further comprises: preliminary ejection drive control means for controlling the closed period of said cap driven by said cap drive means such that said predetermined period β is not included.
Claim 25
Dependent Claim
27 words
The recording apparatus according to claim 5, wherein said first preliminary ejection drive means includes a timer for measuring the non-drive period of said preliminary ejection means.
Claim 26
Dependent Claim
25 words
The recording apparatus according to claim 5, wherein said second preliminary ejection drive means includes a timer for measuring the closed period of said cap.
References Cited (Backward Citations)
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