US5258773A
Expired / Lapsed
US
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Serial recording apparatus for bidirectional recording
Assignee: Canon Inc
•
Filing: 1991-01-28
•
Granted: 1993-11-02
•
Expires: 2011-01-28
Abstract
Abstract A serial recording apparatus for reciprocating a recording head with respect to a recording medium to perform bidirectional recording includes a position detector for detecting a reference position of the recording head, a driving unit for reciprocating the recording head within a predetermined area including the reference position, a calculating unit for calculating a difference between reference positions detected by the position detector by reciprocal movement when the recording head is reciprocated by the driving unit within the predetermined area, and a correcting unit for correcting a positional error in bidirectional recording on the basis of the difference calculated by the calculating unit.
Inventors
- 👤 Junichi Arakawa
- 👤 Kazuyuki Masumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:26
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/14; B41J19/142; B41J19/145
Claims Analysis
Total Claims: 86
Claim 1
Independent Claim
116 words
A serial recording apparatus for reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said apparatus comprising: position detecting means for detecting a reference position of said recording head; driving means for reciprocating said recording head within a predetermined area including the reference position, the predetermined area being within a range from 1/4 to 1/2 of a recording area; means for calculating a difference between reference positions detected by said position detecting means by reciprocal movement when said recording head is reciprocated by said driving means within the predetermined area; and means for correcting a positional error in bidirectional recording on a basis of the difference calculated by said calculating means.
Claim 2
Dependent Claim
116 words
A serial recording apparatus for reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said apparatus comprising: position detecting means for detecting a reference position of said recording head; driving means for reciprocating said recording head within a predetermined area including the reference position, the predetermined area being within a range from 1/4 to 1/2 of a recording area; means for calculating a difference between reference positions detected by said position detecting means by reciprocal movement when said recording head is reciprocated by said driving means within the predetermined area; and means for correcting a positional error in bidirectional recording on a basis of the difference calculated by said calculating means.
Claim 3
Dependent Claim
33 words
An apparatus according to claim 1, wherein said correcting means corrects the positional error on the basis of the difference calculated by said calculating means and a characteristic value of said driving means.
Claim 4
Dependent Claim
26 words
An apparatus according to claim 2, wherein the characteristic value of said driving means is based at least in part on play of said driving means.
Claim 5
Dependent Claim
36 words
An apparatus according to claim 2, wherein said driving means comprises circuitry and the characteristic value of said driving means is based at least in part on a delay in said circuitry of said driving means.
Claim 6
Dependent Claim
42 words
An apparatus according to claim 1, wherein said correcting means corrects the positional error on the basis of the difference calculated by said calculating means and a characteristic value based at least in part on a hysteresis of said position detecting means.
Claim 7
Dependent Claim
29 words
An apparatus according to claim 1, wherein said correcting means corrects the positional error while said recording head is moved for recording in one direction or the other direction.
Claim 8
Dependent Claim
25 words
An apparatus according to claim 1, wherein said correcting means corrects the positional error during movement of said recording head for recording in both directions.
Claim 9
Dependent Claim
36 words
An apparatus according to claim 1, wherein said driving means includes a pulse motor, and said calculating means calculates the difference between the detected reference positions by a number of pulses for driving said pulse motor.
Claim 10
Dependent Claim
43 words
An apparatus according to claim 1, wherein said driving means includes a pulse motor, and said calculating means calculates the difference between the detected reference positions in accordance with a plurality of phases obtained by dividing a pulse for driving said pulse motor.
Claim 11
Dependent Claim
34 words
An apparatus according to claim 1, wherein said driving means drives to reciprocate said recording head to cause said calculating means to calculate the difference between the detected reference positions upon a power-on operation.
Claim 12
Dependent Claim
34 words
An apparatus according to claim 1, wherein said driving means drives to reciprocate said recording head to cause said calculating means to calculate the difference between the detected reference positions in an on-line mode.
Claim 13
Dependent Claim
23 words
An apparatus according to claim 1, wherein said calculating means calculates the differences between the detected reference positions at a plurality of speeds.
Claim 14
Dependent Claim
16 words
An apparatus according to claim 1, wherein the predetermined area is about 1/3 the recording area.
Claim 15
Dependent Claim
22 words
An apparatus according to claim 1, wherein said recording head comprises an ink-jet recording head for ejecting ink droplets to perform recording.
Claim 16
Dependent Claim
29 words
An apparatus according to claim 1, wherein said recording head comprises an ink jet recording head for ejecting ink droplets to perform recording upon growth and shrinkage of bubbles.
Claim 17
Dependent Claim
66 words
An apparatus according to claim 1, wherein said recording head comprises a plurality of ejection ports for ejecting ink, and heat energy generating means, respectively arranged in correspondence with said plurality of ejection ports, for causing a change in state in the ink by heat and ejecting the ink from said ejection ports to form flying liquid droplets on the basis of the change in state.
Claim 18
Dependent Claim
19 words
An apparatus according to claim 1, wherein said recording head is interchangeable with respect to said serial recording apparatus.
Claim 19
Dependent Claim
22 words
An apparatus according to claim 17, wherein said recording head comprises an ink-jet recording head for ejecting ink droplets to perform recording.
Claim 20
Dependent Claim
16 words
An apparatus according to claim 18, wherein said recording head comprises a tank for storing ink.
Claim 21
Dependent Claim
21 words
An apparatus according to claim 1, further comprising computing means for computing and recording various information inputted through an input device.
Claim 22
Dependent Claim
24 words
An apparatus according to claim 1, wherein said serial recording apparatus has a facsimile function which records facsimile information received through a communication line.
Claim 23
Dependent Claim
24 words
An apparatus according to claim 1, wherein said serial recording apparatus has a word processing function which records various information inputted through a keyboard.
Claim 24
Dependent Claim
20 words
An apparatus according to claim 1, wherein said serial recording apparatus has a copier function which records read original information.
Claim 25
Dependent Claim
89 words
A serial recording method of reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said method comprising the steps of: reciprocating said recording head within a predetermined area including a reference position prior to recording, the predetermined area being within a range from 1/4 to 1/2 of a recording area; detecting reference positions in both directions during reciprocal movement and calculating a difference between the detected reference positions; and correcting a positional error to perform bidirectional recording on a basis of the calculated difference.
Claim 26
Dependent Claim
89 words
A serial recording method of reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said method comprising the steps of: reciprocating said recording head within a predetermined area including a reference position prior to recording, the predetermined area being within a range from 1/4 to 1/2 of a recording area; detecting reference positions in both directions during reciprocal movement and calculating a difference between the detected reference positions; and correcting a positional error to perform bidirectional recording on a basis of the calculated difference.
Claim 27
Dependent Claim
34 words
A method according to claim 24, wherein said step of performing bidirectional recording comprises the step of correcting the positional error while said recording head performs recording in one direction or the other direction.
Claim 28
Dependent Claim
30 words
A method according to claim 24, wherein said step of performing bidirectional recording comprises the step of correcting the positional error during recording of said recording head in both directions.
Claim 29
Dependent Claim
16 words
A method according to claim 24, wherein the predetermined area is about 1/3 the recording area.
Claim 30
Dependent Claim
22 words
A method according to claim 24, wherein said recording head comprises an ink-jet recording head for ejecting ink droplets to perform recording.
Claim 31
Dependent Claim
29 words
A method according to claim 24, wherein said recording head comprises an ink jet recording head for ejecting ink droplets to perform recording upon growth and shrinkage of bubbles.
Claim 32
Dependent Claim
66 words
A method according to claim 24, wherein said recording head comprises a plurality of ejection ports for ejecting ink, and heat energy generating means, respectively arranged in correspondence with said plurality of ejection ports, for causing a change in state in the ink by heat and ejecting the ink from said ejection pots to form flying liquid droplets on the basis of the change in state.
Claim 33
Dependent Claim
19 words
A method according to claim 24, wherein said recording head is interchangeable with respect to a serial recording apparatus.
Claim 34
Dependent Claim
22 words
A method according to claim 31, wherein said recording head comprises an ink-jet recording head for ejecting ink droplets to perform recording.
Claim 35
Dependent Claim
16 words
A method according to claim 32, wherein said recording head comprises a tank for storing ink.
Claim 36
Dependent Claim
123 words
A serial recording apparatus for reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said apparatus comprising: position detecting means for detecting a passage of a reference position by said recording head; driving means for reciprocating said recording head within a predetermined area of a recording area including the reference position; means for calculating a difference in timing between passages of reference positions detected by said position detecting means of movements in both directions, respectively, when said recording head is reciprocated by said driving means within the predetermined area; and means for correcting a positional error in bidirectional recording on a basis of a difference calculated by said calculating means and a characteristic value of said driving means.
Claim 37
Dependent Claim
123 words
A serial recording apparatus for reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said apparatus comprising: position detecting means for detecting a passage of a reference position by said recording head; driving means for reciprocating said recording head within a predetermined area of a recording area including the reference position; means for calculating a difference in timing between passages of reference positions detected by said position detecting means of movements in both directions, respectively, when said recording head is reciprocated by said driving means within the predetermined area; and means for correcting a positional error in bidirectional recording on a basis of a difference calculated by said calculating means and a characteristic value of said driving means.
Claim 38
Dependent Claim
26 words
An apparatus according to claim 34, wherein the characteristic value of said driving means is based at least in part on play of said driving means.
Claim 39
Dependent Claim
36 words
An apparatus according to claim 34, wherein said driving means comprises circuitry and the characteristic value of said driving means is based at least in part on a delay in said circuitry of said driving means.
Claim 40
Dependent Claim
31 words
An apparatus according to claim 34, wherein said correcting means corrects the positional error on a further basis of another characteristic value based on a hysteresis of said position detecting means.
Claim 41
Dependent Claim
29 words
An apparatus according to claim 34, wherein said correcting means corrects the positional error while said recording head is moved for recording in one direction or the other direction.
Claim 42
Dependent Claim
25 words
An apparatus according to claim 34, wherein said correcting means corrects the positional error during movement of said recording head for recording in both directions.
Claim 43
Dependent Claim
43 words
An apparatus according to claim 34, wherein said driving means includes a pulse motor, and said calculating means calculates the difference between the detected reference positions in accordance with a plurality of phases obtained by dividing a pulse for driving said pulse motor.
Claim 44
Dependent Claim
34 words
An apparatus according to claim 34, wherein said driving means drives to reciprocate said recording head to cause said calculating means to calculate the difference between the detected reference positions upon a power-on operation.
Claim 45
Dependent Claim
34 words
An apparatus according to claim 34, wherein said driving means drives to reciprocate said recording head to cause said calculating means to calculate the difference between the detected reference positions in an on-line mode.
Claim 46
Dependent Claim
16 words
An apparatus according to claim 34, wherein the predetermined area is about 1/3 the recording area.
Claim 47
Dependent Claim
66 words
An apparatus according to claim 34, wherein said recording head comprises a plurality of ejection ports for ejecting ink, and heat energy generating means, respectively arranged in correspondence with said plurality of ejection ports, for causing a change in state in the ink by heat and ejecting the ink from said ejection ports to form flying liquid droplets on the basis of the change in state.
Claim 48
Dependent Claim
19 words
An apparatus according to claim 34, wherein said recording head is interchangeable with respect to said serial recording apparatus.
Claim 49
Dependent Claim
24 words
An apparatus according to claim 34, wherein said serial recording apparatus has a facsimile function which records facsimile information received through a communication line.
Claim 50
Dependent Claim
24 words
An apparatus according to claim 34, wherein said serial recording apparatus has a word processing function which records various information inputted through a keyboard.
Claim 51
Dependent Claim
20 words
An apparatus according to claim 34, wherein said serial recording apparatus has a copier function which records read original information.
Claim 52
Dependent Claim
21 words
An apparatus according to claim 34, further comprising computing means for computing and recording various information inputted through an input device.
Claim 53
Dependent Claim
106 words
A serial recording method of reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said method comprising the steps of: providing a recording head driving system to reciprocate said recording head; reciprocating said recording head within a predetermined are of a recording are including a reference position prior to recording; detecting reference positions of movements in both directions, respectively, during reciprocal movement and calculating a difference in timing of the detection of the reference positions; and correcting a positional error in order to perform bidirectional recording on a basis of the calculated difference and a characteristic value of the driving system.
Claim 54
Dependent Claim
106 words
A serial recording method of reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said method comprising the steps of: providing a recording head driving system to reciprocate said recording head; reciprocating said recording head within a predetermined are of a recording are including a reference position prior to recording; detecting reference positions of movements in both directions, respectively, during reciprocal movement and calculating a difference in timing of the detection of the reference positions; and correcting a positional error in order to perform bidirectional recording on a basis of the calculated difference and a characteristic value of the driving system.
Claim 55
Dependent Claim
26 words
A method according to claim 51, wherein the characteristic value of the driving system is based at least in part on play of the driving system.
Claim 56
Dependent Claim
36 words
A method according to claim 50, wherein the driving system comprises circuitry and the characteristic value of the driving system is based at least in part on a delay in the circuitry of the driving system.
Claim 57
Dependent Claim
40 words
A method according to claim 50, wherein said step of correcting a positional error is effected on a further basis of another characteristic value based at least in part on a hysteresis of a detector for detecting the reference position.
Claim 58
Dependent Claim
34 words
A method according to claim 50, wherein said step of performing bidirectional recording comprises the step of correcting the positional error while said recording head performs recording in one direction or the other direction.
Claim 59
Dependent Claim
30 words
A method according to claim 50, wherein said step of performing bidirectional recording comprises the step of correcting the positional error during recording of said recording head in both directions.
Claim 60
Dependent Claim
16 words
A method according to claim 50, wherein the predetermined area is about 1/3 the recording area.
Claim 61
Dependent Claim
66 words
A method according to claim 50, wherein said recording head comprises a plurality of ejection ports for ejecting ink, and heat energy generating means, respectively arranged in correspondence with said plurality of ejection ports, for causing a change in state in the ink by heat and ejecting the ink from said ejection ports to form flying liquid droplets on the basis of the change in state.
Claim 62
Dependent Claim
19 words
A method according to claim 50, wherein said recording head is interchangeable with respect to a serial recording apparatus.
Claim 63
Dependent Claim
168 words
A serial recording apparatus for reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said apparatus comprising: driving means for reciprocating said recording head within a predetermined area of a recording area including a reference position, said driving means comprising a pulse motor driven by switching an exciting phase; position detecting means for detecting a passage of the reference position by said recording head, said position detecting means performing the detection in accordance with a plurality of phases obtained by dividing the exciting phase; means for calculating a difference in timing between the passages of reference positions detected by said position detecting means of movements in both directions, respectively, when said recording head is reciprocated by said driving means within the predetermined area, said calculating means calculating the difference in accordance with a plurality of phases obtained by dividing the exciting phase; and means for correcting a positional error in bidirectional recording on a basis of the difference calculated by said calculating means.
Claim 64
Dependent Claim
168 words
A serial recording apparatus for reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said apparatus comprising: driving means for reciprocating said recording head within a predetermined area of a recording area including a reference position, said driving means comprising a pulse motor driven by switching an exciting phase; position detecting means for detecting a passage of the reference position by said recording head, said position detecting means performing the detection in accordance with a plurality of phases obtained by dividing the exciting phase; means for calculating a difference in timing between the passages of reference positions detected by said position detecting means of movements in both directions, respectively, when said recording head is reciprocated by said driving means within the predetermined area, said calculating means calculating the difference in accordance with a plurality of phases obtained by dividing the exciting phase; and means for correcting a positional error in bidirectional recording on a basis of the difference calculated by said calculating means.
Claim 65
Dependent Claim
33 words
An apparatus according to claim 59, wherein said correcting means corrects the positional error on a basis of the difference calculated by said calculating means and a characteristic value of said driving means.
Claim 66
Dependent Claim
26 words
An apparatus according to claim 60, wherein the characteristic value of said driving means is based at least in part on play of said driving means.
Claim 67
Dependent Claim
36 words
An apparatus according to claim 60, wherein said driving means comprises circuitry and the characteristic value of said driving means is based at least in part on a delay in said circuitry of said driving means.
Claim 68
Dependent Claim
42 words
An apparatus according to claim 59, wherein said correcting means corrects the positional error on a basis of the difference calculated by said calculating means and a characteristic value based at least in part on a hysteresis of said position detecting means.
Claim 69
Dependent Claim
29 words
An apparatus according to claim 59, wherein said correcting means corrects the positional error while said recording head is moved for recording in one direction or the other direction.
Claim 70
Dependent Claim
25 words
An apparatus according to claim 59, wherein said correcting means corrects the positional error during movement of said recording head for recording in both directions.
Claim 71
Dependent Claim
34 words
An apparatus according to claim 59, wherein said driving means drives to reciprocate said recording head to cause said calculating means to calculate the difference between the detected reference positions upon a power-on operation.
Claim 72
Dependent Claim
34 words
An apparatus according to claim 59, wherein said driving means drives to reciprocate said recording head to cause said calculating means to calculate the difference between the detected reference positions in an on-line mode.
Claim 73
Dependent Claim
16 words
An apparatus according to claim 59, wherein the predetermined area is about 1/3 the recording area.
Claim 74
Dependent Claim
66 words
An apparatus according to claim 59, wherein said recording head comprises a plurality of ejection ports for ejecting ink, and heat energy generating means, respectively arranged in correspondence with said plurality of ejection ports, for causing a change in state in the ink by heat and ejecting the ink from said ejection ports to form flying liquid droplets on the basis of the change in state.
Claim 75
Dependent Claim
19 words
An apparatus according to claim 59, wherein said recording head is interchangeable with respect to said serial recording apparatus.
Claim 76
Dependent Claim
24 words
An apparatus according to claim 59, wherein said serial recording apparatus has a facsimile function which records facsimile information received through a communication line.
Claim 77
Dependent Claim
24 words
An apparatus according to claim 59, wherein said serial recording apparatus has a word processing function which records various information inputted through a keyboard.
Claim 78
Dependent Claim
20 words
An apparatus according to claim 59, wherein said serial recording apparatus has a copier function which records read original information.
Claim 79
Dependent Claim
21 words
An apparatus according to claim 59, further comprising computing means for computing and recording various information inputted through an input device.
Claim 80
Dependent Claim
120 words
A serial recording method of reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said method comprising the steps of: providing a recording head driving system to reciprocate said recording head in accordance with the switching of an exciting phase; reciprocating said recording head within a predetermined area of a recording area including a reference position prior to recording; detecting reference positions of movements in both directions, respectively, during reciprocal movement in accordance with a plurality of phases obtained by dividing the exciting phase and calculating a difference in timing of the detection of the reference positions; and correcting a positional error in order to perform bidirectional recording on a basis of the calculated difference.
Claim 81
Dependent Claim
120 words
A serial recording method of reciprocating a recording head with respect to a recording medium to perform bidirectional recording, said method comprising the steps of: providing a recording head driving system to reciprocate said recording head in accordance with the switching of an exciting phase; reciprocating said recording head within a predetermined area of a recording area including a reference position prior to recording; detecting reference positions of movements in both directions, respectively, during reciprocal movement in accordance with a plurality of phases obtained by dividing the exciting phase and calculating a difference in timing of the detection of the reference positions; and correcting a positional error in order to perform bidirectional recording on a basis of the calculated difference.
Claim 82
Dependent Claim
34 words
A method according to claim 75, wherein said step of performing bidirectional recording comprises the step of correcting the positional error while said recording head performs recording in one direction or the other direction.
Claim 83
Dependent Claim
30 words
A method according to claim 75, wherein said step of performing bidirectional recording comprises the step of correcting the positional error during recording of said recording head in both directions.
Claim 84
Dependent Claim
16 words
A method according to claim 75, wherein the predetermined area is about 1/3 the recording area.
Claim 85
Dependent Claim
66 words
A method according to claim 75, wherein said recording head comprises a plurality of ejection ports for ejecting ink, and heat energy generating means, respectively arranged in correspondence with said plurality of ejection ports, for causing a change in state in the ink by heat and ejecting the ink from said ejection ports to form flying liquid droplets on the basis of the change in state.
Claim 86
Dependent Claim
19 words
A method according to claim 75, wherein said recording head is interchangeable with respect to a serial recording apparatus.
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