Source: https://patents.google.com/patent/JP3966729B2/en
Timestamp: 2020-03-29 07:29:32
Document Index: 138824994

Matched Legal Cases: ['art 21', 'art 54', 'art 6', 'art 8', 'art 29', 'art 52']

JP3966729B2 - Inkjet recording device - Google Patents
JP3966729B2
JP3966729B2 JP2002013454A JP2002013454A JP3966729B2 JP 3966729 B2 JP3966729 B2 JP 3966729B2 JP 2002013454 A JP2002013454 A JP 2002013454A JP 2002013454 A JP2002013454 A JP 2002013454A JP 3966729 B2 JP3966729 B2 JP 3966729B2
JP2002013454A
JP2003211700A (en
晴生 左山
良介 杉山
宏行 村井
賢五 松山
高弘 福永
2002-01-22 Application filed by シャープ株式会社 filed Critical シャープ株式会社
2002-01-22 Priority to JP2002013454A priority Critical patent/JP3966729B2/en
2003-07-29 Publication of JP2003211700A publication Critical patent/JP2003211700A/en
2007-08-29 Publication of JP3966729B2 publication Critical patent/JP3966729B2/en
The present invention relates to an ink jet recording apparatus that supplies ink to a recording head via a tube.
For recording devices such as printers, facsimile machines, copiers, etc., the ink supply unit supplies ink to the recording head via a tube, and the recording head ejects the supplied ink as droplets to print on recording paper. Some use an inkjet recording apparatus.
Inkjet recording devices have a slide shaft that is orthogonal to the conveyance direction of the recording paper. The recording head is mounted on a carriage that is slidably attached to the slide shaft, and the carriage reciprocates along the slide shaft. However, the recording head is configured to eject ink.
In such an ink jet recording apparatus, in order to prevent ink leakage, it is necessary to configure the ink flow path from the ink supply unit to the recording head via the tube with high sealing performance. In some cases, the connecting portion is connected to the recording head by an adhesive or the like.
The recording head has an ink ejection port for ejecting ink so as to face the recording paper. The ink ejection port adheres to paper scraps, dust, etc., and the ink moisture evaporates to increase the viscosity of the ink. As a result, clogging may occur and ink ejection failure may occur during operation of the ink jet recording apparatus.
In such a case, the recording head must be replaced. However, in the ink jet recording apparatus in which the connecting portion of the tube to the recording head is bonded to the recording head with an adhesive as described above, handling of the tube is complicated. In addition, replacement of each member is complicated. Furthermore, there was a problem that the usable member replaced with another member was wasted.
The present invention has been made in view of such circumstances, and by connecting the tube to the recording head via a connector that can be attached to and detached from the recording head, it is easy to handle the tube when replacing the recording head. An object of the present invention is to provide an ink jet recording apparatus.
Another object of the present invention is to provide an ink jet recording apparatus in which a recording head and a carriage can be independently replaced by mounting the recording head detachably on the carriage, and replacement of each member is simple. It is to provide.
Still another object of the present invention is that the connector connects one or a plurality of tubes to the recording head, so that only the connector and the recording head are connected to the recording head from the ink supply unit via each tube. It is an object of the present invention to provide an ink jet recording apparatus capable of easily configuring the plurality of ink flow paths.
Still another object of the present invention is that the connector has a fitting groove for fitting the vicinity of the connection portion of the tube to the recording head so that the tube can be easily fitted to the connector. An object of the present invention is to provide an ink jet recording apparatus in which each tube can be easily handled even when connected to a recording head.
Still another object of the present invention is to provide an ink jet having a high sealing property by connecting a connector and a recording head via an elastic member so that a flow path of ink supplied to the recording head through the connector is formed. It is to provide a recording apparatus.
Still another object of the present invention is to provide a recording head having a fitting hole for fitting a connecting end portion of the tube to the recording head, so that the connector fits the connecting end portion of the tube to the recording head. An object of the present invention is to provide an ink jet recording apparatus that can be fitted into a hole and easily connect a tube to a recording head.
Still another object of the present invention is to provide a convex portion of a recording head, wherein the connector has a concave portion at a connection end portion of the fitting groove with the recording head, and the recording head has a convex portion corresponding to the concave portion. It is an object of the present invention to provide an ink jet recording apparatus that can correctly position the image forming apparatus and can be easily fitted into the corresponding connector recess.
Still another object of the present invention is that a plurality of tubes are connected to a recording head, and the recording amount of each tube protruding from the connector is made substantially equal so that the recording is started from the connection end of each tube. An object of the present invention is to provide an ink jet recording apparatus in which the structure to the head can be configured identically and the connection work of the tube, the connector and the recording head is easy.
Still another object of the present invention is that the recording head includes a driving substrate for driving the recording head, and the connector holds a signal line connecting the main substrate and the driving substrate. Another object of the present invention is to provide an ink jet recording apparatus that reliably holds a signal line connected to a driving substrate provided in a recording head mounted on a carriage and reciprocating.
An inkjet recording apparatus according to the present invention is an inkjet recording apparatus that supplies ink to a recording head via a tube. The inkjet recording apparatus includes a plurality of the tubes, and each tube is connected to the recording head via a connector that can be attached to and detached from the recording head. The recording head is connected to a head, and is detachably mounted on a carriage that reciprocates in a direction intersecting the recording paper conveyance direction. The connector has a rectangular parallelepiped shape, and has two sides adjacent to a plane. In order to project both ends of each tube, the tube is bent at a substantially right angle, and a fitting groove provided with an open end on each of the two side surfaces is provided side by side. It has the insertion hole which inserts the edge part of each tube which protruded in 1 side facing this recording head .
In the case of the present invention, the tube can be easily handled when the recording head is replaced by connecting the tube to the recording head via a connector that can be attached to and detached from the recording head. Also, the recording head and the tube can be replaced independently, and the replacement work of each member is simple. Furthermore, by replacing only the members that need to be replaced, an ink jet recording apparatus that does not waste the members can be realized.
In the case of the present invention, the recording head is detachably mounted on the carriage, so that the recording head and the carriage can be replaced independently, and the replacement work of each member is simple. Further, by replacing only the member that needs to be replaced, an ink jet recording apparatus that does not waste the member can be realized.
In the case of the present invention, the connector connects one or a plurality of tubes to the recording head, so that the connector and the recording head are simply connected to each other, and a plurality of the ink supply units to the recording heads via the respective tubes are connected. An ink jet recording apparatus can be realized in which the ink flow path can be easily configured and color output can be handled.
In the case of the present invention, since the connector has a fitting groove for fitting the vicinity of the connection portion of the tube to the recording head, the tube can be easily fitted to the connector, and a plurality of tubes can be attached to the recording head. Even when connected, each tube is easy to handle. In addition, it is easy to attach the tube to the recording head using a connector, and an ink jet recording apparatus can be realized in which replacement of each member is simple.
The inkjet recording apparatus according to the present invention is characterized in that the connector and the recording head are connected via an elastic member.
According to the present invention, there is provided an ink jet recording apparatus in which a connector and a recording head are connected via an elastic member so that a flow path of ink supplied to the recording head through the connector is configured with high sealing performance. Can be realized.
In the ink jet recording apparatus according to the present invention, the recording head has a fitting hole for fitting a connection end portion of the tube to the recording head, and the connector includes the connection end portion of the tube. It is fitted in the fitting hole of the recording head, and is connected to the recording head via the elastic member.
In the case of the present invention, the recording head has a fitting hole for fitting the connecting end portion of the tube to the recording head, so that the connector fits the connecting end portion of the tube into the fitting hole of the recording head. In combination, the tube can be easily connected to the recording head. In addition, by connecting the connector to the recording head via an elastic member, an ink jet recording apparatus is realized in which the flow path of the ink that passes through the connector and is supplied to the recording head is configured with high sealing performance. be able to.
In the ink jet recording apparatus according to the present invention, the connector has a concave portion at a connection end portion of the fitting groove with the recording head, and the recording head has a convex portion corresponding to the concave portion. And the convex portion of the recording head is fitted to the concave portion of the connector via the elastic member disposed in the concave portion, and the elastic member is fitted to the fitting hole of the recording head. The ink is prevented from flowing out between the tube fitted in the hole.
In the case of the present invention, the connector has a concave portion at the connection end of the fitting groove with the recording head, and the recording head has a convex portion corresponding to the concave portion, thereby correctly positioning the convex portion of the recording head. And can be easily fitted in the concave portion of the corresponding connector. Further, by fitting the convex portion of the recording head into the concave portion via the elastic member disposed in the concave portion of the connector, the elastic member is deformed in the fitting portion of the convex portion and the concave portion, and recording is performed. The ink can be prevented from flowing out between the fitting hole of the head and the tube fitted in the fitting hole, and the flow path of the ink that passes through the connector and is supplied to the recording head is highly sealed. An ink jet recording apparatus configured as described above can be realized.
In the ink jet recording apparatus according to the present invention, the recording head includes a driving substrate for driving the recording head, and the connector holds a signal line that connects the main substrate and the driving substrate. It is characterized by.
In the case of the present invention, the recording head includes a driving substrate for driving the recording head, and the connector holds the signal line that connects the main substrate and the driving substrate, thereby allowing the carriage to move to the carriage. The signal line connected to the driving substrate provided in the recording head that is mounted and reciprocates can be reliably held. Further, it is possible to realize an ink jet recording apparatus that holds the signal lines together with a tube connected to the recording head.
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a schematic diagram showing the configuration of an ink jet recording apparatus according to the present invention. In the figure, reference numeral 1 denotes a head unit in which a recording head is mounted on a carriage. The head unit 1 is slid on a slide shaft 7 arranged perpendicular to the conveying direction of the recording paper 8 indicated by white arrows in the figure. It is attached movably. Further, the ink supply unit 6 including the ink cartridge and the head unit 1 are connected via a tube 5, and ink is supplied from the ink supply unit 6 to the head unit 1 via the tube 5, and the supplied ink is supplied. Is ejected by the head unit 1 to print on the recording paper 8.
The ink jet recording apparatus according to the present embodiment supports color output, and the ink supply unit 6 includes ink cartridges of six colors of black, cyan, magenta, yellow, light cyan, and light magenta, and an ink supply unit. 6 supplies ink to the head unit 1 via the corresponding tubes 5.
2 is an explanatory diagram showing the configuration of the head unit 1, FIG. 3 is an explanatory diagram showing the configuration of the connector 2, FIG. 4 is a cross-sectional view showing a connection portion between the connector 2 and the recording head 3, and FIG. It is an external perspective view.
The head unit 1 includes a carriage 4 slidably attached to a slide shaft 7, a recording head 3 mounted on the carriage 4, and a connector 2 for attaching the tube 5 to the recording head 3. The connector 2, the recording head 3, and the carriage 4 are configured to be detachable from each other. The connector 2 is detached from the recording head 3 attached to the carriage 4, and the recording head 3 to which the connector 2 is attached is removed from the carriage 4. Removal is also possible easily.
The connector 2 includes a holding portion 21 that holds the six tubes 5 in a bundle and a lid portion 22 that fixes the tubes 5 held by the holding portion 21.
The holding part 21 has a long plate shape, and fitting grooves 23 for fitting the six tubes 5 are arranged in parallel on one surface. The fitting groove 23 is bent at a substantially right angle so that the tube 5 protrudes on two adjacent side surfaces, and is provided with an open end on each of the two adjacent side surfaces. In addition, a recessed portion 24 is provided at each opening end of the fitting groove 23 on the recording head 3 side, and has the other opening end of the fitting groove 23 on a straight line in which six recessed portions 24 are arranged in parallel. On one side, a hook-like hooking portion 25 is provided.
Further, a long plate-like fixing portion 26 is projected on the other surface of the holding portion 21, and the connector 2 is fixed to the recording head 3 with screws 27 and 27 at both ends in the fixing direction 26. For this purpose, through holes 26a and 26a are provided.
In the holding portion 21 having the above-described configuration, the tube 5 in which the connection portion to the recording head 3 is bundled by the bundling member 51 is fitted into the fitting groove 23 with the connection end portion 5a having an appropriate length protruding. In addition, an O-ring 29 of an appropriate size inserted through each of the connection end portions 5a is fitted in the recess 24.
The lid portion 22 is provided with through-holes 22a and 22a at appropriate positions so as to be fixed to the holding portion 21 by screws 28 and 28 at appropriate two locations while avoiding the fitting groove 23. The connector 2 that holds the tube 5 is configured by attaching the lid portion 22 to the holding portion 21 at 28.
In addition, by bending and forming the tube 5 in accordance with the shape of each fitting groove 23, the tube 5 can be easily fitted into the fitting groove 23 corresponding to the shape. 5 can be always held at a fixed length.
The recording head 3 includes six subtanks (not shown) that temporarily store ink supplied from the ink supply unit 6 and six ink ejection ports (not shown) that are connected to the subtanks and face the recording paper 8. And an insertion hole 31 through which the connection end portion 5a of the tube 5 to the recording head 3 is inserted in the cut-out cross section is communicated with the sub tank. Six are arranged side by side at positions corresponding to the connection end portions 5 a protruding from the connector 2.
Further, in the vicinity of the opening end of each insertion hole 31 of the recording head 3, a convex portion 34 that can be fitted into the concave portion 24 of the connector 2 is provided.
When the connection end portion 5a of the tube 5 held by the connector 2 is inserted into the insertion hole 31 of the recording head 3, as shown by an arrow in FIG. As shown in b), the convex portion 34 of the recording head 3 can be easily fitted into the concave portion 24 of the corresponding connector 2, and can constitute an ink flow path from the ink supply portion 6 to the sub tank. it can. Further, the O-ring 29 arranged in the concave portion 24 of the connector 2 is deformed at the fitting portion between the convex portion 34 of the recording head 3 and the concave portion 24, and the outflow of ink that flows backward from the sub tank can be prevented.
The recording head 3 is provided with a recess 32 at a position where the locking portion 25 provided in the connector 2 can be hooked when the connector 2 is connected to the recording head 3, and the tube 5 is inserted into the insertion hole 31 as described above. When the connector 2 and the recording head 3 are connected to each other by inserting the connecting end portions 5a, the latching portion 25 of the connector 2 is latched to the recess 32. Even if the tube 5 is bent or the like as the recording head 3 moves by passing the screws 27 and 27 through the through holes 26a and 26a of the fixing portion 26 of the connector 2 and screwing them into the recording head 3, respectively. The connector 2 is securely fixed to the recording head 3, and a stable ink flow path from the ink supply unit 6 to the recording head 3 can be configured via the tube 5.
Further, the recording head 3 includes L-shaped convex portions 33 and 33 on the side surface having the concave portion 32 and the side surface on the opposite side.
The carriage 4 is a box on which the recording head 3 can be mounted, and has a shape in which one side surface protrudes from the other three surfaces, and can be slidably attached to the slide shaft 7 on the one side surface. A hole 41 is provided. On the two side surfaces adjacent to the one side surface, when the recording head 3 is mounted, notches 43 and 43 are provided so that the two convex portions 33 and 33 provided on the side surface of the recording head 3 can be accommodated. Two projecting portions 44a and 44b project from the notches 43 and 43, respectively.
Further, when the recording head 3 to which the tube 5 is attached via the connector 2 is mounted on one of the two side surfaces, the ink supply unit 6 is connected via the latching portion 25 provided in the connector 2 and the connector 2. A notch 42 for inserting the tube 5 to be connected is also provided.
The recording head 3 to which the tube 5 is connected via the connector 2 allows the latching portion 25 of the connector 2 and the tube 5 connected to the ink supply portion 6 via the connector 2 to be inserted into the notch portion 42. The convex portions 33 and 33 are accommodated in the cutout portions 43 and 43, respectively, and mounted on the carriage 4.
Next, as shown in FIG. 5, the leaf spring 53 is attached in a substantially W shape to the convex portions 44 a and 44 b provided on the side surfaces of the carriage 4 with the convex portions 33 and 33 of the recording head 3 as the centers. As a result, the recording head 3 is fixed to the carriage 4 by the reaction force of the leaf spring 53.
On the other hand, the recording head 3 includes a driving substrate 55 on which an electronic component for driving the recording head 3 is mounted. The bundling member 51 for bundling the tubes 5 also has a configuration for holding a flat cable 52 provided with a signal line for connecting the main board and the driving board 55. The flat cable held by the bundling member 51 is also provided. 52 is fixed to the lid portion 22 of the connector 2 with an adhesive or the like, and connects the main board and the driving board 55 by connecting the connection end 52 a to the connecting part 54 provided on the driving board 55.
With the above-described configuration, even when the carriage 4 reciprocates along the slide shaft 7 during operation of the ink jet recording apparatus, the latching portion 25 of the connector 2 is latched on the concave portion 32 of the recording head 3, and The reaction force of the leaf spring 53 fixes the recording head 3 to the carriage 4, so that the connector 2, the recording head 3, and the carriage 4 are securely fixed.
In addition, since the tube 5, the connector 2, the recording head 3, and the carriage 4 can be attached to and detached from each other, it is possible to replace only the member that needs to be replaced, and it is possible to prevent the member from being wasted. The work is simple. Furthermore, by providing the connector 2 with the fitting groove 23 for fitting the tube 5, it becomes easy to handle the tube 5 when replacing each member constituting the head unit 1.
In the above-described embodiment, the connector 2 and the recording head 3 are illustrated as being connected via the O-ring 29 fitted in the recess 24 of the connector 2, but are not limited to the O-ring 29. Other elastic members may be used as long as they can stably connect the connector 2 and the recording head 3 and prevent the ink from flowing out from the sub tank in the recording head 3.
Further, the recording head 3 and the carriage 4 are fixed by a substantially W-shaped leaf spring 53. However, the recording head 3 and the carriage 4 are not limited to the leaf spring of this shape, and are not limited to the leaf spring, and other elastic members or the like are used. May be.
In the case of the present invention, a plurality of tubes are connected to the recording head, and the protruding amounts of the connecting end portions of the tubes protruding from the connector are made substantially equal so as to be fitted into the fitting holes of the recording head. Thus, the structure from the connection end of each tube to the recording head can be configured identically, and an ink jet recording apparatus that can easily connect the tube, the connector, and the recording head can be realized.
FIG. 1 is a schematic view showing the configuration of an ink jet recording apparatus according to the present invention.
FIG. 2 is an explanatory diagram showing a configuration of a head unit.
FIG. 3 is an explanatory diagram showing a configuration of a connector.
FIG. 4 is a cross-sectional view showing a connection portion between a connector and a recording head.
FIG. 5 is an external perspective view of a head unit.
DESCRIPTION OF SYMBOLS 1 Head unit 2 Connector 3 Recording head 4 Carriage 5 Tube 5a Connection end part 6 Ink supply part 8 Recording paper 23 Fitting groove 24 Concave part 29 O-ring 31 Insertion hole 34 Convex part 52 Flat cable 55 Driving substrate
In an inkjet recording apparatus that supplies ink to a recording head through a tube,
A plurality of the tubes are provided, and each tube is connected to the recording head via a connector detachable from the recording head,
The recording head is detachably mounted on a carriage that reciprocates in a direction crossing the recording paper conveyance direction.
The connector has a rectangular parallelepiped shape,
In order to project both ends of each tube at two adjacent side surfaces on a plane, the tube is bent at a substantially right angle, and fitting grooves provided with open ends on each of the two side surfaces are arranged in parallel.
The ink jet recording apparatus , wherein the recording head has an insertion hole for inserting an end portion of each tube protruding on one side surface of the two side surfaces facing the recording head .
The inkjet recording apparatus according to claim 1, wherein the connector and the recording head are connected via an elastic member.
The recording head has a fitting hole for fitting the connection end of the tube to the recording head, and the connector fits the connection end of the tube into the fitting hole of the recording head. The inkjet recording apparatus according to claim 2, wherein the inkjet recording apparatus is connected to the recording head via the elastic member.
The connector has a concave portion at a connection end portion of the fitting groove with the recording head, the recording head has a convex portion corresponding to the concave portion, and the convex portion of the recording head is The connector is fitted into the recess of the connector via the elastic member disposed in the recess, and the elastic member includes the fitting hole of the recording head and the tube fitted into the fitting hole. 4. An ink jet recording apparatus according to claim 3, wherein said ink jet recording apparatus is adapted to prevent ink from flowing out.
The recording head includes a driving substrate for driving the recording head, and the connector holds a signal line connecting the main substrate and the driving substrate. The ink jet recording apparatus according to any one of 1 to 4.
JP2002013454A 2002-01-22 2002-01-22 Inkjet recording device Active JP3966729B2 (en)
JP2002013454A JP3966729B2 (en) 2002-01-22 2002-01-22 Inkjet recording device
JP2003211700A JP2003211700A (en) 2003-07-29
JP3966729B2 true JP3966729B2 (en) 2007-08-29
ID=27650406
JP2002013454A Active JP3966729B2 (en) 2002-01-22 2002-01-22 Inkjet recording device
JP (1) JP3966729B2 (en)
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CN104507688B (en) * 2012-08-10 2016-08-17 精工爱普生株式会社 Liquid injection apparatus
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2007-05-09 A911 Transfer of reconsideration by examiner before appeal (zenchi)