EP0505730A1
Expired / Lapsed
EP
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Electrophotographic recording apparatus
Assignee: Oki Electric Industry Co Ltd
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Filing: 1992-02-20
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Granted: —
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Expires: 2012-02-20
Abstract
Abstract An electrophotographic recording apparatus includes a plurality of light emitting elements (3) each for irradiating a photoconductive surface of a photoconductor (1) and each having one-luminescent portion per chip; and a driver (4, 5) for reciprocatively moving a carriage (2) in rightward and leftward directions along an arrangement direction of the light emitting elements (3) and in forward and backward directions along a moving direction of the photoconductive surface of the photoconductor (1). In such an apparatus, there is provided such a control that the carriage (2) is moved forwards at a speed synchronized with a movement of the photoconductive surface of the photoconductor (1), while moved rightward or leftward, in succession, the carriage (2) is moved backward in a state that the carriage (2) is not moved at all or hardly moved in the rightward and leftward directions, in succession, the carriage (2) is moved forward at the a speed synchronized with the movement of the photoconductive surface of the photoconductor (1), while moved leftward or rightward, and in succession, the carriage(2) is moved backward in a state that the carriage(2) is not moved at all or hardly moved in the rightward and leftward directions.
Inventors
- 👤 Minoru C/O Oki Electric Ind. Co. Ltd. Isobe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:22
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/18; B41J19/20; B41J2/00; B41J2/435; B41J2/447; B41J2/45; G; G03; G03G; G03G15/00; G03G15/04; G03G15/04036; G03G15/04045; G03G15/04054; G03G15/22; G03G15/32; G03G15/326; H; H04; H04N; H04N1/00; H04N1/04; H04N1/19; H04N1/191; H04N1/192
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
319 words
An electrophotographic recording apparatus comprising: a photoconductor (1) having a photoconductive surface which is continuously moved forwards; a plurality of light emitting elements (3) each for irradiating the photoconductive surface of said photoconductor (1); a carriage (2) disposed over against said photoconductor, said plurality of light emitting elements (3) being mounted on said carriage in such a manner that they are arranged at equal space intervals in a direction perpendicular to a moving direction of the photoconductive surface of said photoconductor (1); and driving means (4, 5) for reciprocatively moving said carriage in rightward and leftward directions along the arrangement direction of the light emitting elements (3) and in forward and backward directions along the moving direction of the photoconductive surface of said photoconductor (1), CHARACTERIZED IN THAT said driving means (4, 5) includes a first driving means (4) for driving said carriage (2) in the forward and backward directions, and a second driving means (5) for driving said carriage in the rightward and leftward directions, said second driving means being substantially independent of said first driving means in operation, and said recording apparatus further comprises driving control means (8, 9a, 9b, 10a, 10b) for causing said driving means (4, 5) to provide such a control that said carriage (2) is moved forward at a speed synchronized with a movement of the photoconductive surface of said photoconductor (1) while moved rightward or leftward, in succession, said carriage is moved backward in a state that said carriage (2) is not moved at all or hardly moved in the rightward and leftward directions, in succession, said carriage (2) is moved forward at the a speed synchronized with the movement of the photoconductive surface of said photoconductor(1), while moved leftward or rightward, and in succession, said carriage (2) is moved backward in a state that said carriage (2) is not moved at all or hardly moved in the rightward and leftward directions.
Claim 2
Dependent Claim
62 words
An apparatus according to claim 1, CHARACTERIZED IN THAT said first driving means (4) comprises a frame (4a) surrounding the carriage (2), two number of first leaf springs (4b) placed between the frame 4a and the carriage for depressing the carriage downward, and a first piezoelectric element (4c) for driving the carriage upward against a force of the first leaf springs (4b).
Claim 3
Dependent Claim
98 words
An apparatus according to claim 2, CHARACTERIZED IN THAT said second driving means (5) comprises an L-shaped first block (5a), an L-shaped second leaf spring (5b) having one end fixed to one end of the first block (5a), and the other end fixed to a right end of the frame (4a), a stacked-layer type of second piezoelectric element (5c) adapted to deform itself in response to an application of a voltage by a power source for deforming the second leaf spring (5b), the second piezoelectric element (5c) being fixed to the other end of the first block (5a).
Claim 4
Dependent Claim
74 words
An apparatus according to claim 3, CHARACTERIZED BY comprising a spring support mechanism (6) comprising an L-shaped third leaf spring (6a) having one end fixed to a left end of the frame 4a, and a second block (6b) for supporting the third leaf spring (6a), and a photo-guide (7) disposed between the carriage (2) and the photoconductor(1) for leading light emitted from the light emitting elements (3) to the surface of the photoconductor (1).
Claim 5
Dependent Claim
95 words
An apparatus according to claim 1, CHARACTERIZED IN THAT said second driving means (5) comprises an L-shaped first block (5a), an L-shaped leaf spring (5b) having one end fixed to one end of the first block (5a), and the other end fixed to one end of a frame (4a), a stacked-layer type of second piezoelectric element (5c) adapted to deform itself in response to an application of a voltage by a power source for deforming the leaf spring (5b), the second piezoelectric element (5c) being fixed to the other end of the first block (5a).
Claim 6
Dependent Claim
17 words
An apparatus according to claim 1, CHARACTERIZED IN THAT said first driving means (4) comprises a motor.
Claim 7
Dependent Claim
15 words
An apparatus according to claim 6, CHARACTERIZED IN THAT said motor is a stepping motor.
Claim 8
Dependent Claim
15 words
An apparatus according to claim 6, CHARACTERIZED IN THAT said motor is a DC motor.
Claim 9
Dependent Claim
19 words
An apparatus according to claim 1, CHARACTERIZED IN THAT said second driving means (5) comprises a linear motor (13).
Claim 10
Dependent Claim
42 words
An apparatus according to claim 1, CHARACTERIZED IN THAT said second driving means (5) comprises a motor (11) and an eccentric cam (12), wherein a rotational force of the motor (11) is transformed into a reciprocative force by the eccentric cam (12).
Claim 11
Dependent Claim
16 words
An apparatus according to claim 10, CHARACTERIZED IN THAT said motor is a stepping motor (11).
Claim 12
Dependent Claim
80 words
An apparatus according to claim 1, CHARACTERIZED IN THAT said driving means (4, 5) is arranged in such a manner that a rotational force of a single motor is transformed into a reciprocative force by an eccentric cam so that the carriage(2) vibrate rightward and leftward, and in addition an electromagnetic clutch and a gear are coupled with said motor to intermittently take out powers and further to reverse the vibrtating direction so that the carriage shifts upward and downward.
Claim 13
Dependent Claim
22 words
An apparatus according to claim 1, CHARACTERIZED IN THAT each of said light emitting elements (3) is provided with a condenser lens.
Claim 14
Dependent Claim
47 words
An apparatus according to claim 3, CHARACTERIZED IN THAT a shift block (4) including said frame (4a) surrounding the carriage (2) is vibrated along the tangential plane of said photoconductor (1), by the bent portions of the second leaf spring (5b) and the third leaf spring (6a).
Claim 15
Dependent Claim
45 words
An apparatus according to claim 14, CHARACTERIZED IN THAT said shift block (4) is supported in such a manner that the shift block (4) is moved reciprocatively by a second leaf spring (5b') and a third leaf spring (6a') of which mounting directions differ 90°.
Claim 16
Dependent Claim
104 words
An electrophotographic recording apparatus comprising: a photoconductor (1) having a photoconductive surface which is continuously moved; a plurality of light emitting elements (3) arranged at equal space intervals in a direction perpendicular to a moving direction of said photoconductor(1), and disposed in such a manner that luminescent portions of the light emitting elements (3) face the photoconductive surface of said photoconductor (1); and driving means (4, 5) for reciprocatively moving said light emitting elements (3) along the arrangement direction of the light emitting elements, CHARACTERIZED IN THAT said light emitting elements (3) each having one-luminescent portion per chip are arranged at equal space intervals.
Claim 17
Dependent Claim
339 words
An electrophotographic recording apparatus comprising: a photoconductor (1) having a photoconductive surface which is continuously moved forward; a plurality of light emitting elements (3) each for irradiating the photoconductive surface of said photoconductor (1); a carriage (2) disposed over against said photoconductor (1), said plurality of light emitting elements (3) being mounted on said carriage in such a manner that they are arranged at equal space intervals in a direction perpendicular to a moving direction of the photoconductive surface of said photoconductor (1); and driving means (4, 5) for reciprocatively moving said carriage (2) in rightward and leftward directions along the arrangement direction of the light emitting elements (3) and in forward and backward directions along the moving direction of the photoconductive surface of said photoconductor (1), CHARACTERIZED IN THAT said light emitting elements (3) each having one-luminescent portion per chip are arranged at equal space intervals; said driving means (4, 5) includes a first driving means (4) for driving said carriage in the rightward and leftward directions, and a second driving means (5) for driving said carriage (2) in the forward and backward directions, said second driving means (5) being substantially independent of said first driving means (4) in operation; and said recording apparatus further comprises driving control means (8, 9a, 9b, 10a, 10b) for causing said driving means to provide such a control that said carriage (2) is moved forward at a speed synchronized with a movement of the photoconductive surface of said photoconductor (1), while moved rightward or leftward, in succession, said carriage (2) is moved backward in a state that said carriage (2) is not moved at all or hardly moved in the rightward and leftward directions, in succession, said carriage (2) is moved forward at the a speed synchronized with the movement of the photoconductive surface of said photoconductor (1), while moved leftward or rightward, and in succession, said carriage (2)is moved backward in a state that said carriage (2) is not moved at all or hardly moved in the right and left directions.
Claim 18
Dependent Claim
65 words
An apparatus according to claim 17, CHARACTERIZED IN THAT said first driving means (4) comprises a frame (4a) surrounding the carriage (2), two number of first leaf springs (4b) placed between the frame 4a and the carriage (2) for depressing the carriage (2) downward, and a first piezoelectric element (4c) for driving the carraige (2) upward against a force of the first leaf springs (4b).
Claim 19
Dependent Claim
100 words
An apparatus according to claim 18, CHARACTERIZED IN THAT said second driving means (5) comprises an L- shaped first block (5a), an L-shaped second leaf spring (5b) having one end is fixed to one end of the first block (5a), and the other end fixed to a right end of the frame (4a), a stacked-layer type of second piezoelectric element (5c) adapted to deform itself in response to an application of a voltage by a power source for deforming the second leaf spring (5b), the second piezoelectric element (5c) being fixed to the other end of the first block (5a).
Claim 20
Dependent Claim
79 words
An apparatus according to claim 19, CHARACTERIZED IN THAT said apparatus further comprises a spring support mechanism (6) comprising an L-shaped third leaf spring (6a) having one end fixed to a left end of the frame (4a), and a second block (6b) for supporting the third leaf spring (6a), and a photo-guide (7) disposed between the carriage (2) and the photoconductor (1) for leading light emitted from the light emitting elements (3) to a surface of the photoconductor (1).
Claim 21
Dependent Claim
96 words
An apparatus according to claim 17, CHARACTERIZED IN THAT said second driving means (5) comprises an L- shaped first block (5a), an L-shaped leaf spring (5b) having one end fixed to one end of the first block (5a), and the other end fixed to one end of a frame (4a), a stacked-layer type of second piezoelectric element (5c) adapted to deform itself in response to an application of a voltage by a power source for deforming the leaf spring (5b), the second piezoelectric element (5c) being fixed to the other end of the first block (5a).
Claim 22
Dependent Claim
17 words
An apparatus according to claim 17, CHARACTERIZED IN THAT said first driving means (4) comprises a motor.
Claim 23
Dependent Claim
15 words
An apparatus according to claim 22, CHARACTERIZED IN THAT said motor is a stepping motor.
Claim 24
Dependent Claim
15 words
An apparatus according to claim 22, CHARACTERIZED IN THAT said motor is a DC motor.
Claim 25
Dependent Claim
19 words
An apparatus according to claim 17, CHARACTERIZED IN THAT said second driving means (5) comprises a linear motor (13).
Claim 26
Dependent Claim
42 words
An apparatus according to claim 17, CHARACTERIZED IN THAT said second driving means (5) comprises a motor (11) and an eccentric cam (12), and a rotational force of the motor (11) is transformed into a reciprocative force by the eccentric cam (12).
Claim 27
Dependent Claim
15 words
An apparatus according to claim 26, CHARACTERIZED IN THAT said motor is a stepping motor(11).
Claim 28
Dependent Claim
82 words
An apparatus according to claim 17, CHARACTERIZED IN THAT said driving means (4, 5) is arranged in such a manner that a rotational force of a single motor is transformed into a reciprocative force by an eccentric cam so that the carriage (2) vibrates rightward and leftward, and in addition an electromagnetic clutch and a gear are coupled with said motor to intermittently take out powers and further to reverse the vibrating direction so that the carriage (2) shifts upward and downward.
Claim 29
Dependent Claim
21 words
An apparatus according to claim 17, CHARACTERIZED IN THAT each of said light emitting elements is provided with a condenser lens.
Claim 30
Dependent Claim
47 words
An apparatus according to claim 19, CHARACTERIZED IN THAT a shift block (4) including said frame (4a) surrounding the carriage (2) is vibrated along the tangential plane of said photoconductor (1), by the bent portions of the second leaf spring (5b) and the third leaf spring (6a).
Claim 31
Dependent Claim
45 words
An apparatus according to claim 30, CHARACTERIZED IN THAT said shift block (4) is supported in such a manner that the shift block (4) is moved reciprocatively by a second leaf spring (5b') and a third leaf spring (6a') of which mounting directions differ 90°.
References Cited (Backward Citations)
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