EP0577376A2 - Printing apparatus having vibration driven linear type actuator for carriage - Google Patents
Printing apparatus having vibration driven linear type actuator for carriage Download PDFInfo
- Publication number
- EP0577376A2 EP0577376A2 EP93305050A EP93305050A EP0577376A2 EP 0577376 A2 EP0577376 A2 EP 0577376A2 EP 93305050 A EP93305050 A EP 93305050A EP 93305050 A EP93305050 A EP 93305050A EP 0577376 A2 EP0577376 A2 EP 0577376A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- vibrating
- printing apparatus
- contact
- sheet
- rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/20—Positive-feed character-spacing mechanisms
- B41J19/30—Electromagnetically-operated mechanisms
- B41J19/305—Linear drive mechanisms for carriage movement
Abstract
Description
- The present invention relates to a vibration driven linear type actuator utilizing a vibration driven actuator and a printing apparatus having the vibration driven linear type actuator.
- The present applicant proposed a printing apparatus which uses a vibration driven actuator as a carriage driving source and a driving source for feeding a printing sheet. For example, a printing apparatus of this type is disclosed in Japanese Laid-Open Patent Application Nos. 2-209335 and 3-93481.
- Figs. 6A and 6B show the structure of the printing apparatus disclosed in the above-mentioned patent applications. The structure of the printing apparatus as the prior art related to the present invention will be described below.
- Referring to Figs. 6A and 6B, a carriage driving vibration driven
actuator 1 is used for moving acarriage 4 in the direction of an arrow A in Fig. 6A, and sheet feeding vibration drivenactuators printing sheet 16 in the direction of an arrow B. Since these vibration drivenactuators 1 to 3 driven by an ultrasonic wave are the same ones, they will be collectively referred to hereinafter. As shown in Fig. 7, each of theactuators 1 to 3 has a pseudo elliptic outer appearance constituted by a pair of parallel linear portions, and a pair of semi-circular portions connecting the two-end portions of these linear portions. Each of theactuators 1 to 3 is constituted by adhering a piezoelectric element group lb (2b or 3b) having the above-mentioned shape to anelastic member 1a (2a or 3a) having the same shape. - The principle of power generation of the vibration driven
actuators 1 to 3 has already been disclosed in the above-mentioned patent applications and the like, and will be briefly described in the present specification. More specifically, when a plurality of AC voltages having different phases are applied to the piezoelectric element group lb (2b or 3b), a travelling wave, which cyclically moves in the direction of an arrow C in Fig. 7, is generated on the surface of theelastic member 1a (2a or 3a). As a result, a thrust parallel to one linear portion lab (2ab or 3ab) of theelastic member 1a (2a or 3a) and in the direction of an arrow D opposite to the arrow C acts on a to-be-driven object M (indicated by an alternate long and short dashed line in Fig. 7) two-dimensionally contacting the linear portion lab (2ab or 3ab), thereby driving the object M in the direction of the arrow D (or driving the vibration drivenactuators 1 to 3 in the direction opposite to the arrow D). - Note that the tooth-shaped surface of each of the
elastic members 1a to 3a of the vibration drivenactuators 1 to 3 is employed for increasing components in the feeding direction of the amplitude of a vibration on the elastic member surface, and eliminating interference of vibrations at the respective points, thereby reducing a mechanical energy loss. - The carriage driving vibration driven
actuator 1 is fixed facing down on the lower surface of thecarriage 4, so that its linear portions extend parallel to the moving direction A of thecarriage 4. Thus, the tooth-shaped surface of theelastic member 1a of theactuator 1 faces down, as shown in Fig. 6B. The tooth-shaped surface of one linear portion of theelastic member 1a is pressed against the upper surface of aside projecting portion 8a of a vibratingrail 8, as shown in Fig. 6B. - The entire lower surface of a
main body 8b of the vibratingrail 8 for moving the vibration drivenactuator 1 in the direction of the arrow A contacts and is fixed to afirst bottom plate 10a of the printing apparatus, and the vibratingrail 8 extends parallel to the moving direction A of thecarriage 4. The side projecting portion (or actuator engaging portion) 8a, which has a small thickness, and contacts only the surface of one linear portion of theelastic member 1a of theactuator 1, is formed on the upper end of themain body 8b of the vibratingrail 8. - As is apparent from the above arrangement, when the vibration driven
actuator 1 is driven (i.e., when AC voltages having different phases are applied to the piezoelectric element group lb, and a cyclic vibration is generated on the tooth-shaped surface of theelastic member 1a), the vibratingrail 8 vibrates as well, and a relative thrust in the direction of the arrow A acts between the surface of one linear portion of theelastic member 1a and the upper surface of theside projecting portion 8a of the vibratingrail 8. Thus, the movable vibration drivenactuator 1 moves along the vibratingrail 8, thereby moving thecarriage 4 in the direction of the arrow A. More specifically, the vibration drivenactuator 1 and the vibratingrail 8 constitute a vibration driven linear type actuator. - A
carriage guide rail 9 is used for guiding thecarriage 4, and supports the weight of thecarriage 4. Theguide rail 9 extends parallel to the vibratingrail 8, and its entire lower surface is fixed to thefirst bottom plate 10a of the printing apparatus in the same manner as the vibratingrail 8, as shown in Fig. 6B. - The printing apparatus shown in Figs. 6A and 6B also includes a known bubble jet
type printing head 13 fixed to one end of thecarriage 4, aposition detection photointerrupter 18 fixed to the other end of thecarriage 4, a positiondetection encoder plate 15 fixed on thebottom plate 10a to extend parallel to the vibratingrail 8 and thecarriage guide rail 9, and arranged to pass a slit of theposition detection photointerrupter 18, as shown in Fig. 6B, a sheet feedingactuator support plate 6 extending parallel to therails carriage 4, abearing block 5 attached to thesupport plate 6 to allow thesupport plate 6 to be movable in the direction of the arrow B (a guide bar or a screw shaft (not shown) extending in the direction of the arrow B is inserted in a shaft hole of the bearing block 5), a sheet feedingamount detection roller 17 pressed against the upper surface of a printing sheet 16 (to be simply referred to as a sheet hereinafter), and rotated upon movement of thesheet 16 in the direction of the arrow B, and a sheet feeding amount detectionrotary encoder 7 coupled to theroller 17, and rotated by theroller 17. - The sheet feeding vibration driven
actuators sheet 16 therebetween (i.e., the tooth-shaped surfaces of theelastic members actuator 2 is fixed facing down to the lower surface of thesupport plate 6, and the vibration drivenactuator 3 is fixed facing up to the upper surface of athird bottom plate 10c of the printing apparatus. Theseactuators actuators sheet 16, and the remaining actuator surfaces do not contact thesheet 16. Therefore, when the vibration drivenactuators sheet 16 sandwiched between theactuators sheet 16 is fed in the direction of the arrow B. As shown in Fig. 6B, thesheet 16 is placed on asecond bottom plate 10b of the printing apparatus, and is conveyed by using thebottom plate 10b as a convey path. - The above-mentioned conventional printing apparatus requires the
first bottom plate 10a for supporting and fixing the vibratingrail 8 and thecarriage guide rail 9, thesecond bottom plate 10b serving as the sheet feeding convey path, and thethird bottom plate 10c for supporting thesheet feeding actuator 3. - In the conventional apparatus, the
side projecting portion 8a of the vibrating rail 8 (rail-like stationary member) is designed to have a lowest resonance frequency sufficiently larger than the driving frequency of theactuator 1 so as to follow the vibration on the vibration drivenactuator 1. - In the above-mentioned conventional printing apparatus, since the
sheet 16 must be inserted below thefirst bottom plate 10a, the bottom plate portion must have a three-layered structure (the first, second, andthird bottom plates - In the conventional apparatus, since the
carriage 4 is supported by the singlecarriage guide rail 9 alone, it may vertically swing. In addition, since thecarriage 4 and thecarriage guide rail 9 have a slide structure, if the carriage speed is high, the carriage may swing horizontally. Therefore, the carriage has poor stability, and the above-mentioned structure is not suitable for a high-speed operation. - It is, therefore, an object of the present invention to provide an improved printing apparatus which can eliminate the above-mentioned drawbacks.
- It is another object of the present invention to provide a feeding apparatus with a simple structure.
- According to one aspect of the present invention, support bases are provided to only the two end portions of a vibrating rail, and the rail is fixed on a third bottom plate via the bases, so that a portion, excluding the two end portions, of the vibrating rail extends over a moving path of a sheet. Also, support bases are provided to only the two end portions of a carriage guide rail, and the rail is fixed on the third bottom plate via the bases, so that a portion, excluding the two end portions, of the carriage guide rail extends over the moving path of a sheet. Thus, a first bottom plate can be omitted.
- According to another aspect of the present invention, the support bases are provided to the two end portions of each of the vibrating rail and the carriage guide rail, and these rails are fixed on the third bottom plate via the bases, thereby omitting the first bottom plate. In addition, rollers, which roll along the vibrating rail and the carriage guide rail, are provided to a carriage, and the carriage is supported by the vibrating rail and the carriage guide rail, thereby improving stability of the carriage, and allowing a high-speed operation of the carriage.
-
- Fig. 1A is a perspective view showing a printing apparatus comprising a vibration driven linear type actuator according to the first embodiment of the present invention;
- Fig. 1B is a sectional view of the printing apparatus shown in Fig. 1A;
- Figs. 2A and 2B are graphs showing the frequency characteristics of a main body of a vibrating rail as a constituting element of the vibration driven linear type actuator;
- Fig. 3 is an enlarged view showing movement of contact portions between a vibration driven actuator and the vibrating rail in the apparatus shown in Figs. 1A and 1B;
- Fig. 4 is an enlarged view showing movement of contact portions between the vibration driven actuator and the vibrating rail in the apparatus shown in Figs. 1A and 1B;
- Fig. 5A is a perspective view showing a printing apparatus according to the second embodiment of the present invention;
- Fig. 5B is a sectional view of the printing apparatus shown in Fig. 5A;
- Fig. 6A is a perspective view showing a conventional printing apparatus;
- Fig. 6B is a sectional view of the printing apparatus shown in Fig. 6A; and
- Fig. 7 is a perspective view showing a known vibration driven actuator used in the vibration driven linear type actuator and the printing apparatus of the present invention, and in the conventional printing apparatus.
- The preferred embodiment of the present invention will be described below with reference to Figs. 1A to 3.
- Figs. 1A and 1B show a bubble jet type printing apparatus according to the first embodiment of the present invention. The same reference numerals in Figs. 1A and 1B denote the same parts as in the conventional apparatus shown in Figs. 6A and 6B, and a detailed description thereof will be omitted unless needed.
- In the bubble jet type printing apparatus according to the first embodiment of the present invention shown in Figs. 1A and 1B, bases 8c and 9a are respectively provided to only two end portions of a vibrating
rail 8 and only two end portions of acarriage guide rail 9. Therail 8 is supported on abottom plate 10c via thebases 8c, and therail 9 is supported on thebottom plate 10c via thebases 9a. Therefore, the vibratingrail 8 and thecarriage guide rail 9 extend over the moving path of asheet 16, and portions other than the two end portions of therails rails bottom plate 10c at their two end portions via thebases first bottom plate 10a required in the conventional apparatus can be omitted, and hence, the thickness of the printing apparatus of this embodiment can be decreased as compared to the conventional apparatus. - In this embodiment, since the portion, other than the two end portions, of the vibrating
rail 8 is suspended in the air, many resonance points are formed on amain body 8b of therail 8, and some resonance frequencies of these resonance points are lower than the driving frequency of a vibration drivenactuator 1 in a lower-order mode. (All resonance frequencies of vibration modes in which only aside projecting portion 8a of the vibratingrail 8 vibrates are sufficiently larger than the driving frequency of theactuator 1.) - Figs. 2A and 2B show the frequency characteristics of the
main body 8b of the vibratingrail 8. Fig. 2A shows the relationship between the applied vibration frequency (the driving frequency of the actuator 1) to the vibratingrail 8, and the vibration amplitude of themain body 8b of the vibratingrail 8, and Fig. 2B shows the relationship between the applied vibration frequency to the vibratingrail 8 and the phase delay of the vibration of themain body 8b with respect to the applied vibration. In Figs. 2A and 2B, f₁, f₂, and f₃ indicate the resonance frequencies of themain body 8b of the vibratingrail 8. At this time, the vibration of theside projecting portion 8a is increased under the influence of the vibration of themain body 8b (since the mass of themain body 8b is larger than that of theside projecting portion 8a), and the phase is delayed by 90°. In this state, theside projecting portion 8a interferes with the wave on theactuator 1 or contacts the valleys of the wave, and cannot smoothly feed thecarriage 4. Therefore, the resonance frequency of themain body 8b must not become equal to the driving frequency of theactuator 1. - When the
main body 8b has a low rigidity, if the vibration frequency of themain body 8b is shifted from the resonance frequency, the vibration amplitude of themain body 8b is considerably large, and that of theside projecting portion 8a becomes large accordingly. For example, when the applied vibration frequency in Figs. 2A and 2B is fa, although it is shifted from the resonance point f₂, the vibration amplitude of themain body 8b is considerably large, and the phase delay is also large. Thus, the vibration state of theside projecting portion 8a in this mode is as shown in Fig. 3. The actual vibration state of theside projecting portion 8a is complicated since it corresponds to superposition of the components shown in Fig. 3 and components of a mode for vibrating theside projecting portion 8a alone, i.e., the components of a mode having a phase delay of almost 0° for the vibration of the actuator 1 (almost no phase delay occurs since the resonance frequency of theside projecting portion 8a is sufficiently large), as shown in Fig. 4. As a result, thecarriage 4 cannot be smoothly fed. When the applied vibration frequency in Figs. 2A and 2B is fb, the vibration amplitude of themain body 8b is small, and almost no phase delay occurs. For this reason, the actual vibration state of theside projecting portion 8a is as shown in Fig. 4, and thecarriage 4 can be smoothly fed. Therefore, when the temporal phase delay of the vibration of themain body 8b of the vibratingrail 8 with respect to the vibration of theactuator 1 is selected near 0°, thecarriage 4 can be smoothly fed even when themain body 8b has a low rigidity. - Fig. 5A is a perspective view of a bubble jet type printing apparatus according to the second embodiment of the present invention, and Fig. 5B is a side view showing main part of Fig. 5A. In this embodiment, only the two end portions of a main body 8'b of a vibrating rail 8' are fixed to the
bottom plate 10c via fixing members 8'c. The vibrating rail 8' also serves as a guide for thecarriage 4, and is formed with a groove along whichrollers 19 provided to thecarriage 4 roll. Thus, even when the main body 8'b of the vibrating rail 8' is slightly bent or warps, the vibration drivenactuator 1 and a side projecting portion 8'a of the vibratingrail 8 can maintain a stable contact state, and a further low-profile structure of the apparatus can be expected. Aroller 20 provided to a projectingportion 4a of thecarriage 4 rolls along a carriage guide rail 9' upon reception of the weight of thecarriage 4. Thus, thecarriage 4 is supported by the vibrating rail 8' and the carriage guide rail 9' via therollers - As described above, according to the printing apparatus of the present invention, only the two end portions of the vibrating rail are attached to the bottom plate to form a gap between the vibrating rail and the bottom plate, and a sheet is fed in the gap, thus providing a low-profile printer. When the driving frequency of the vibration driven
actuator 1 is set to be different from the resonance frequency of the main body of the vibrating rail, the side projecting portion (actuator engaging portion) can follow the vibration of the actuator, and the carriage can be smoothly fed. - Furthermore, when the temporal phase delay of the vibration of the main body of the vibrating rail with respect to the vibration of the actuator is selected near 0°, the side projecting portion can follow the vibration of the actuator even when the main body has a low rigidity. Thus, the carriage can be smoothly fed.
- In each of the above embodiments, the bases for supporting the vibrating rail and the guide rail are separated from these rails. However, the vibrating rail and its support bases may be integrated, and the guide rail and its support bases may be integrated. The
sheet feeding actuators actuators - In each of the above embodiments, the present invention is applied to a printer. However, the present invention is not limited to a printer, but may be applied to a convey apparatus for conveying, e.g., a plate material.
- In each of the above embodiments, the
actuator 1 moves along therail 8. However, the end portion of theactuator 1 may be fixed to thebottom plate 10c, and therail 8 may be fixed to thecarriage 4, thereby moving therail 8. - The
rails second bottom plate 10b to extend over the sheet convey path in place of attaching them to thebottom plate 10c.
Claims (18)
- A printing apparatus comprising:
a vibrating member for generating a vibration therein;
a contact member which is in contact with said vibrating member, said vibration creating relative movement between said vibrating member and said contact member; and
a base plate member,
wherein one of said vibrating member and said contact member is functionally coupled to a position on said base plate member where said one member does not interfere with movement of a sheet to be subjected to printing, and has at least one supporting portion for holding said one member at a predetermined level position above the sheet. - A printing apparatus according to claim 1, wherein said one member has two supporting portions, functionally fixed to said base plate member, for supporting said one member to extend over the sheet.
- A printing apparatus according to claim 2, wherein said two supporting portions are provided to two end portions of said one member.
- A printing apparatus according to claim 1,
further comprising:
a supporting member, inserted between the supporting portion of said one member and the position on said base plate member, for holding said one member at a predetermined level. - A printing apparatus comprising:(a) a vibrating member for generating a travelling wave therein;(b) a contact member which is in contact with said vibrating member, said vibration creating relative movement between said vibrating member and said contact member;(c) a first base member for forming a convey path for a sheet to be subjected to printing; and(d) a second base member for supporting said first base member, one of said vibrating member and said contact member having an attaching portion for supporting said one member at a predetermined position to extend over the convey path, and said attaching portion being attached to said second base member.
- A printing apparatus according to claim 5, wherein said one member is the contact member fixed on said second base member through said attaching portion.
- A printing apparatus according to claim 5, wherein said vibrating member includes a loop shaped elastic element having at least one straight portion in contact with said contact member and an electro-mechanical energy conversion element, attached to said elastic element, for generating the travelling wave in said elastic element.
- A printing apparatus according to claim 5, further comprising:(a) a carriage member attached to said vibrating member; and(b) a member for guiding said carriage member to allow said carriage member to move along a predetermined direction.
- A printing apparatus according to claim 8, wherein said second base member has a portion for fixing said guiding member at a predetermined position.
- A printing apparatus according to claim 5, further comprising:
a member for generating a driving force for conveying said sheet. - A printing apparatus according to claim 10, wherein said driving force generating member includes a travelling wave generating element in contact with said sheet.
- A printing apparatus according to claim 11, wherein said second base member includes a portion for fixing said travelling wave generating element at a predetermined position.
- A printing apparatus according to claim 5, wherein said contact member has a portion which contacts and guides said vibrating member.
- A printing apparatus comprising:(a) a vibrating member for generating a vibration therein;(b) a contact member which is in contact with said vibrating member, said vibration creating relative movement between said vibrating member and said contact member: and(c) a first base member for forming a convey path for a sheet to be subjected to printing;wherein one of said vibrating member and said contact member has at least one attaching portion for supporting said one member above the convey path so as to be able to convey said sheet, and the attaching portion is fixed to one of said first base member and a second base member for said first base member.
- A feeding apparatus comprising:(a) a vibrating member for generating a vibration therein;(b) a contact member which is in contact with said vibrating member, said vibration creating relative movement between said vibrating member and said contact member; and(c) a first base member for forming a convey path for a material,wherein one of said vibrating member and said contact member has at least one attaching portion for supporting said one member above the convey path so as to be able to convey said material, and the attaching portion is fixed to one of said first base member and a second base member for said first base member.
- A printing apparatus comprising a vibratory drive member (1) in driving engagement with a vibratory contact rail, characterised in that said rail (8) is supported only at or near the ends thereof.
- A printing apparatus as claimed in claim 16, characterised in that support bases (8c) are provided to only the two end portions of a vibrating rail, and the rail (8) is fixed on a third bottom plate (10c) via the bases, so that a portion, excluding the two end portions, of the vibrating rail extends over a moving path of a sheet.
- A printing apparatus as claimed in claim 16 or 17, characterised in that support bases (9a) are also provided to only the two end portions of a carriage guide rail (9), and the guide rail is fixed on the third bottom plate via the bases, so that a portion, excluding the two end portions, of the carriage guide rail extends over the moving path of a sheet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4171124A JPH0614567A (en) | 1992-06-29 | 1992-06-29 | Oscillation linear driver and printer employing linear driver |
JP171124/92 | 1992-06-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0577376A2 true EP0577376A2 (en) | 1994-01-05 |
EP0577376A3 EP0577376A3 (en) | 1994-08-03 |
EP0577376B1 EP0577376B1 (en) | 1997-12-10 |
Family
ID=15917434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930305050 Expired - Lifetime EP0577376B1 (en) | 1992-06-29 | 1993-06-28 | Printing apparatus having vibration driven linear type actuator for carriage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0577376B1 (en) |
JP (1) | JPH0614567A (en) |
DE (1) | DE69315628T2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0624479A2 (en) * | 1993-05-11 | 1994-11-17 | Seiko Instruments Inc. | Printer with ultrasonic motor |
US7695101B2 (en) | 2004-03-08 | 2010-04-13 | Brother Kogyo Kabushiki Kaisha | Image recording apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019112842A1 (en) * | 2019-05-16 | 2020-11-19 | Physik Instrumente (Pi) Gmbh & Co. Kg | Actuator |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982003123A1 (en) * | 1981-03-09 | 1982-09-16 | Ncr Co | Dot matrix printer |
EP0351854A2 (en) * | 1988-07-21 | 1990-01-24 | Canon Kabushiki Kaisha | Serial recording apparatus |
JPH0331140A (en) * | 1989-06-28 | 1991-02-08 | Canon Inc | Sheet feeder |
EP0437050A1 (en) * | 1989-12-12 | 1991-07-17 | Canon Kabushiki Kaisha | Vibration wave driven apparatus |
EP0475752A2 (en) * | 1990-09-12 | 1992-03-18 | Canon Kabushiki Kaisha | Vibration-driven motor |
EP0575080A1 (en) * | 1992-06-17 | 1993-12-22 | Canon Kabushiki Kaisha | Vibration wave driven motor and method of producing same |
-
1992
- 1992-06-29 JP JP4171124A patent/JPH0614567A/en active Pending
-
1993
- 1993-06-28 EP EP19930305050 patent/EP0577376B1/en not_active Expired - Lifetime
- 1993-06-28 DE DE1993615628 patent/DE69315628T2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982003123A1 (en) * | 1981-03-09 | 1982-09-16 | Ncr Co | Dot matrix printer |
EP0351854A2 (en) * | 1988-07-21 | 1990-01-24 | Canon Kabushiki Kaisha | Serial recording apparatus |
JPH0331140A (en) * | 1989-06-28 | 1991-02-08 | Canon Inc | Sheet feeder |
EP0437050A1 (en) * | 1989-12-12 | 1991-07-17 | Canon Kabushiki Kaisha | Vibration wave driven apparatus |
EP0475752A2 (en) * | 1990-09-12 | 1992-03-18 | Canon Kabushiki Kaisha | Vibration-driven motor |
EP0575080A1 (en) * | 1992-06-17 | 1993-12-22 | Canon Kabushiki Kaisha | Vibration wave driven motor and method of producing same |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 15, no. 160 (M-1105) 22 April 1991 & JP-A-03 031 140 (CANON) 8 February 1991 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0624479A2 (en) * | 1993-05-11 | 1994-11-17 | Seiko Instruments Inc. | Printer with ultrasonic motor |
EP0624479A3 (en) * | 1993-05-11 | 1995-08-30 | Seiko Instr Inc | Printer with ultrasonic motor. |
US7695101B2 (en) | 2004-03-08 | 2010-04-13 | Brother Kogyo Kabushiki Kaisha | Image recording apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0614567A (en) | 1994-01-21 |
EP0577376A3 (en) | 1994-08-03 |
DE69315628D1 (en) | 1998-01-22 |
DE69315628T2 (en) | 1998-04-09 |
EP0577376B1 (en) | 1997-12-10 |
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