JP2006080864A - Image reading and recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve an assembling property at the time of attaching an original reading unit to an original recording unit in an original reading and recording apparatus in which the original reading unit is located above the original recording unit and the original reading unit and the original recording unit are attached so as to be mutually turned by a hinge. <P>SOLUTION: By providing a stopper for preventing the original reading unit from being turned more than a required angle separately from a mechanism for holding the opened original reading unit, the original reading unit has only to be mounted from above at the time of assembling the original reading unit and the original recording unit and the assembling of the stopper for preventing the original reading unit from being opened more than a designated angle and the assembling of a mechanism for holding the original reading unit in its opened state are completed. Then, it is possible to improve an assembling property and reduce the number of components. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an image reading and recording apparatus such as a facsimile machine, a copying machine, and a multifunction machine.

  In an image reading and recording apparatus such as a facsimile, a copying machine, and a multifunction machine, toner, an ink sheet, ink, or the like is required as a printing material for recording an image. As a means for exchanging these printing materials, a configuration in which an image reading unit opens and closes around a hinge is known.

Conventionally, in such a configuration, there has been a mechanism provided with a stopper function as a mechanism for preventing the image reading apparatus from opening more than a specified angle. (For example, Patent Document 1) In addition, there is a document reading unit itself in which a stopper for preventing the image reading unit from opening more than a specified angle and a mechanism for holding the document reading unit in an open state are formed. It was.
JP 2001-296710 A

  The conventional layout has the following problems.

  If the stopper that prevents the image reading unit from opening more than the specified angle is provided in the same manner as the mechanism member that holds the document reading unit in the open state, the document reading unit is placed on the document recording unit during assembly. Since the stopper member must be fastened in this state, the assembly workability is poor.

  In addition, when a stopper for preventing the image reading unit from opening more than a specified angle and a mechanism for holding the document reading unit in an open state are formed on the document reading unit itself, the stopper is made using the elasticity of the material. Since it must be assembled, if the weight of the document reading unit is heavy, it may come off during use, which is dangerous for the user.

  In order to achieve the above object, in the invention according to the present application, the document reading unit is configured above the document recording unit, and the document reading unit and the document recording unit are rotatably attached by a hinge, An original reading and recording apparatus having a mechanism for holding the original reading unit in an open state and having a stopper so that the original reading unit does not rotate more than a necessary angle. The stopper is held in an open state of the original reading unit. It is provided separately from the mechanism member, and is in the vicinity of the rotation center.

  According to the present invention, when assembling the document reading unit and the document recording unit, the stopper is assembled and the document reading unit is opened so that the document reading unit is not opened more than a specified angle only by placing the document reading unit from above. Assembling of the mechanism to be held in a closed state is completed, so that the assembling property is improved and the number of parts can be reduced.

  Next, an image reading apparatus according to an embodiment of the present invention will be described.

  An image reading and recording apparatus according to the present embodiment will be described with reference to the drawings.

  FIG. 1 is a perspective view of the present embodiment. FIG. 2 is a central sectional view. As shown in FIG. 1 and FIG. 2, it is composed of a panel unit 1, a scanner unit 2, a recording unit 3, an electric board unit 4, and a card slot unit 5.

  First, the panel unit 1 will be described.

  3 is an enlarged view of the panel portion, FIG. 4 is a diagram showing the LCD lifted up, FIG. 5 is an illustration of the stopper of the panel unit, FIG. 6 is an illustration of the stopper of the panel unit, and FIG. 8 is a cross key structure diagram.

  As a structure, each key 13 is fitted to the panel cover left 11a and the panel cover right 11b. The color start key 13a, the monochrome start key 13b, the stop key 13c, the cross key 13d, the mode key 13e, the power key 13f, and the function key 12g are each integrally formed with one or more keys. It is attached in the cover 11. A tact switch (not shown) is soldered under the key 13 on the panel substrate 16. An LCD module and an electric board (not shown) are built in the LCD unit 12 and attached to the surface of the LCD window 12a which is a transparent member. The LCD unit 12 is configured to be rotatable about the hinge 12b and can be operated by the user. As shown in FIG. 4, the LCD unit 12 has a maximum opening / closing angle of about 110 degrees with respect to the horizontal plane. These rotation stoppers maintain this angle by colliding with the stopper rib 12C of the LCD unit of FIG. 5 and the stopper groove 11C of the panel cover of FIG. When the LCD unit 12 is forcibly pulled to open 110 degrees or more, 11d in FIG. 9 is designed to have a slight gap, and interferes at 11d before the stopper breaks. Further, in a normal state, the 11d portion has a gap of about 1 mm so as not to be damaged by opening and closing.

  FIG. 7 is a diagram showing the structure of the cross key 13d. The cross key 13d has a double structure of a cap part 13d-1 and a base part 13d-2 as shown in FIG. The cap portion 13d-1 is painted, and the base portion 13d-2 is not painted. The reason for the double structure is that when both are made integrally, masking must be performed so that the exterior portion not coated is not coated. The cap portion 13d-1 and the base portion 13d-2 are assembled with a light press fit.

  The panel unit 1 is attached to the scanner unit 2 as a whole.

  Next, the scanner unit 2 will be described.

  FIG. 10 is a view of the main body when the document is set, and is a glass 23 on which the document is set face down. The glass 23 is pressed from above by a cover 125. The pressure plate 21 is attached to a pressure plate 21 for holding the document floating, a pressure plate white sheet 22 composed of a sponge and a white sheet, and a sponge frame 22a. The pressure plate 21 is attached via a hinge 124. FIG. 11 shows the internal structure of the scanner unit 2 with the glass 23 and the cover 125 removed from FIG. The CCD reading unit 24 has both pictures when moved to the left end and the right end. All these internal parts are attached to the scanner frame 120. A CCD reading unit 24 for reading an image is guided and moved on a shaft 25 and a rail 121. Further, the CCD reading unit 24 is decelerated by the driving gear unit 122 using a motor as power, and is driven via the timing belt 26. The timing belt 26 is hung on a pulley (not shown) opposite to the drive gear portion 122. Explaining these operations, the CCD reading unit 24 is driven in the direction of an arrow B during a copy operation or a scanning operation from a PC, and reads an original through the glass 23.

  Next, the operation when reading a film will be described. As shown in FIG. 12, the sponge frame 22a can be removed, and the surface light emitting portion 21a, which is a part of the pressure plate 21, is exposed. In order to read the film, it is necessary to transmit light through the film, so that a light source is provided above the document surface. The film guide 221 is accommodated in the removed sponge frame 22a as shown in FIG. 13, and can be removed as shown in FIG. As shown in FIG. 15, the removed film guide 221 is set on the glass 23, the fixing member 221a is raised, a negative film (not shown) is set, and the fixing member 221a is lowered and fixed again. Thereafter, the pressure plate 21 is closed and the preparation for reading the film is completed.

  Next, a structure in which the scanner unit 2 is attached to the main body will be described. As shown in FIG. 16, one link member 222 is attached to the scanner unit 2 on the left and right. FIG. 17 is a view when the scanner unit 2 is opened, and the hinge portion 120 a of the scanner frame 120 is in the bearing portion 231 b of the middle frame 231. Further, the link 222a is locked so as to get on the abutting portion 231a of the middle frame 231, and is restricted in the direction of the arrow D. FIG. 19 is a cross-sectional view of the link 222 and the middle frame 231. FIGS. 17 and 18 are on the abutting portion 231 in the state (1). From this state, when a certain force is applied in the direction D, the lock is released, the scanner sinks in the order of (2) and (3), and the normal state of FIG. 1 is obtained in (4). FIG. 20 is a partial view of the lock in the direction of arrow E in FIG. 17, and the lock portion 120b of the scanner frame and the lock portion 231c of the middle frame are engaged with each other to prevent rotation in the direction of arrow E from the state of FIG. It is out. With such a configuration, it is not necessary to hook the link to the fixed portion in advance, compared with the case where the E-direction lock is provided on the link portion, and assembly can be facilitated.

  Next, the recording unit 3 will be described.

  As shown in FIG. 2, the recording paper 100a is conveyed in the direction of arrow C.

  The stacked recording paper 100a is pushed up by the intermediate plate 36 by a cam (not shown), and separated and fed by the paper feed roller 34 and the separation roller 35. This separation mechanism is actually driven by a paper feed roller 34, and the separation roller 35 does not rotate unless a certain torque is applied in the rotation direction. When entering, since the force for rotating the separation roller is stronger than the force for separating the paper, the recording paper can be conveyed one by one. The document separated by these rollers is conveyed between the conveying roller 37a and the pinch roller 37b, and is conveyed to the inkjet printing unit at a constant speed. FIG. 29 shows the cartridge door 133 opened from the front, and FIG. 31 shows the cartridge door opened from the side. A cartridge 39 and an ink tank 38 for each color are integrally mounted on the ink jet printing unit. The cartridge 39 is guided by the guide shaft 134 and moves in a direction perpendicular to the feeding direction of the recording paper, thereby printing on the recording paper. The printed recording paper is discharged to the recording paper discharge tray 131 by the discharge roller pair 130. The paper discharge tray 131 is automatically opened with the start of recording printing. This prevents the user from forgetting to open the paper discharge tray 131 and causing the recording paper to jam.

  The paper discharge tray 131 is automatically opened in the direction of arrow G by raising the scanner unit 2 in the direction of arrow F. This can be automatically opened according to the principle of explanation of the electric board unit described later.

  Next, the automatic opening mechanism of the paper discharge tray 131 will be described.

  FIG. 21 is a perspective view of the opening mechanism of the paper discharge tray 131, and FIG. 22 is an enlarged view of the closing unit 300. As shown in FIG. 21, one of the rotation centers is connected to the opening unit 300. In FIG. 22, the cam gear 302 is connected to the paper discharge tray 131, and the rotation angle of the cam gear 302 and the rotation angle of the paper discharge tray 131 are synchronized. In the closed state, the discharge tray 131 is pressed in the opening direction by the torsion coil spring 303. However, since the movable plate 301a of the solenoid 301 is engaged with the stepped portion 302a of the cam gear 302, it is held in a closed state. When the solenoid 301 is actuated by the electrical signal and the movable plate 301a moves in the direction of the arrow H, the cam gear 302 is pressurized and thus rotates in the direction of the arrow I. The cam gear 302 is initially pressurized by the torsion coil spring 303, but the applied pressure is eliminated in the middle. This is because the paper discharge tray 131 can be opened by its own weight. In addition, the cam gear 302 meshes with the oil damper 304 from the middle through the idler gear 306. Thereby, the opening speed of the paper discharge tray 131 is slowed down, and it is possible to suppress an impact sound when the paper discharge tray 131 lands. The paper discharge tray key 305 can press the movable plate 301a from the outside of the main body in the direction of arrow J. The cam gear 302a can be unlocked manually, not electrically. The paper tray 131 can be opened.

  When the ink tank is replaced by this automatic opening mechanism, the scanner unit 2 is first raised in the direction of arrow F. Thereby, the paper discharge tray 131 is opened by the automatic opening mechanism described above. Next, the cartridge door 133 is opened as shown in FIG. 24 to move to a position where the user can replace the ink tank 38. In this state, the user can exchange the ink tank 38 from the outside.

  Note that, among the ink jet recording methods used in the present embodiment, a means (for example, an electrothermal converter or a laser beam) that generates thermal energy as energy used to perform ink ejection is provided, and the heat The description has been given of the printing apparatus in which the state change of the ink is caused by the energy. However, according to such a system, it is possible to achieve high recording density and high definition.

  As its typical configuration and principle, for example, those performed using the basic principle disclosed in US Pat. Nos. 4,723,129 and 4,740,796 are preferable. This method can be applied to both the so-called on-demand type and continuous type. In particular, in the case of the on-demand type, it is arranged corresponding to the sheet or liquid path holding the liquid (ink). By applying at least one drive signal corresponding to recording information and applying a rapid temperature rise exceeding film boiling to the electrothermal transducer, the thermal energy is generated in the electrothermal transducer, and the recording head This is effective because film boiling occurs on the heat acting surface of the liquid, and as a result, bubbles in the liquid (ink) corresponding to the drive signal on a one-to-one basis can be formed. By the growth and contraction of the bubbles, liquid (ink) is ejected through the ejection opening to form at least one droplet. When the drive signal is pulse-shaped, the bubble growth and contraction is performed immediately and appropriately, and thus it is possible to achieve the discharge of liquid (ink) with particularly excellent responsiveness.

  As this pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. Further excellent recording can be performed by employing the conditions described in US Pat. No. 4,313,124 of the invention relating to the temperature rise rate of the heat acting surface.

  As the configuration of the recording head, in addition to the combination configuration (straight liquid flow path or right-angle liquid flow path) of the discharge port, the liquid path, and the electrothermal transducer as disclosed in each of the above-mentioned specifications, the heat acting surface The configurations using US Pat. No. 4,558,333 and US Pat. No. 4,459,600, which disclose a configuration in which is disposed in a bending region, are also included in the present invention. In addition, Japanese Patent Application Laid-Open No. 59-123670, which discloses a configuration in which a common slot is used as a discharge portion of an electrothermal transducer, or an opening that absorbs a pressure wave of thermal energy is discharged to a plurality of electrothermal transducers A configuration based on Japanese Patent Laid-Open No. 59-138461 disclosing a configuration corresponding to each part may be adopted.

  Furthermore, as a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording apparatus, the length is satisfied by a combination of a plurality of recording heads as disclosed in the above specification. Either a configuration or a configuration as a single recording head formed integrally may be used.

  In addition, the ink is integrated into the replaceable chip type recording head or the recording head itself, which can be electrically connected to the apparatus main body and supplied with ink from the apparatus main body by being attached to the apparatus main body. A cartridge type recording head provided with a tank may be used.

  In addition, it is preferable to add a recovery means for the recording head, a preliminary auxiliary means, etc. provided as a configuration of the recording apparatus of the present invention, since the effects of the present invention can be further stabilized. Specifically, capping means, cleaning means, pressurizing or suction means for the recording head, preheating means using a heating element different from this, or a combination thereof, or recording is used. Performing a preliminary discharge mode for performing another discharge is also effective for performing stable recording.

  Further, the recording mode of the recording apparatus is not limited to the recording mode of only the mainstream color such as black, but the recording head may be integrated or may be a combination of a plurality of colors. An apparatus having at least one of full colors can also be provided.

  Next, the electric substrate unit 4 and the overall layout will be described.

  FIG. 25 is an overall view of the electric board, and FIGS. 26, 27, and 28 are views showing an assembling method. In FIG. 26, first, a control board 402 and a card board 403 are attached to a metal PCB holder 401. Next, a PCB cover 404 made of a highly flame-retardant plastic material is attached. Thereby, an electric board | substrate can be completely covered with a flame-retardant thing. Further, as shown in FIG. 28, the photo interrupter 405 is attached on the PCB cover 404. This fat interrupter 405 is a sensor for detecting when the scanner unit 2 is opened as shown in FIG. 29, and the protrusion 120d of the scanner frame 120 is attached to the middle frame 231 as shown in FIG. When the scanner unit 2 is closed by pushing the sensor lever 406, the fat interrupter 405 is blocked. This corresponds to the movement of the carriage during ink replacement. FIG. 32 shows a method of assembling the side cover 151 which is a part of the exterior on these electric board portions. FIG. 33 shows a method for assembling the card substrate cover 152. This is because the openings of the memory card slots 403a and 403b mounted on the card substrate 403 have a width of only about 1 mm, and therefore the hole position may be shifted if it is made integrally with the side cover 151. For this reason, the card board cover 152 is a separate part, and the card board cover 152 is positioned by inserting the bosses 152a and 152b of the card board cover in FIG. 34 into the holes 401a and 401b of the PCB holder 401 that directly holds the card board. The card holes 152g, 152h of the card board cover 152 and the memory card slots 403a, 403b can be aligned with each other by fixing with the claw 152c, 152d, 152e, 152f.

  Next, an example of the operation of the image reading and recording apparatus will be described. The operation is performed by operating the keys on the panel section of FIG. For example, an operation when copying is described. Press the power key 13f. Next, the copy key 13e-1 is selected with the function key 13e. The menu key 13d-1 selects the image quality and the recording medium, and the arrow key 13d-2 sets the number of copies. Thereafter, the pressure plate 21 is opened, and a document to be copied is set on the glass 23. The recording paper is set on the recording paper tray 32, and the color start key 13a is pressed when performing color copying at the end, and the monochrome start key 13b is pressed when performing monochrome copying. As described above, the keys of the panel unit 1 are arranged so that all operations can be performed naturally without being lost by operating from left to right in the operation order. Although an example of the operation method has been described with respect to copying, when scanning is selected with the first function key 13e, scanning from a PC connected through USB can be performed. When a photograph is selected, the image inserted in the card slot unit 5 can be directly recorded on the recording unit 3.

1 is a perspective view of an image reading and recording apparatus according to an embodiment of the present invention. 1 is a cross-sectional view of an image reading and recording apparatus according to an embodiment of the present invention. FIG. 3 is an enlarged view of a panel unit of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 4 is an LCD rotation diagram of the panel unit of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 1 is an explanatory diagram of an LCD unit hinge of an image reading and recording apparatus according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of an LCD unit hinge of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is an enlarged view of a cross key of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 4 is an exploded view of the cross key of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 4 is a back surface gap diagram of the LCD unit of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is a state diagram in which the pressure plate of the image reading and recording apparatus according to the embodiment of the present invention is opened. The figure which removed the glass of the image reading part of the image reading and recording apparatus which concerns on embodiment of this invention. FIG. 2 is a sponge frame detachment view of the image reading and recording apparatus according to the embodiment of the present invention. 1 is a sponge frame diagram of an image reading and recording apparatus according to an embodiment of the present invention. FIG. 4 is a film guide detachment view of the image reading and recording apparatus according to the embodiment of the present invention. The film guide set figure of the image reading and recording apparatus which concerns on embodiment of this invention. FIG. 3 is a link attachment diagram of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is an explanatory diagram of a scanner unit lock of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is a lock detail view of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is a link state diagram of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is a detailed view of a scanner hinge of the image reading and recording apparatus according to the embodiment of the present invention. 1 is a perspective view of a paper discharge tray mechanism of an image reading and recording apparatus according to an embodiment of the present invention. FIG. 3 is an enlarged view of a paper discharge tray mechanism of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is a cross-sectional view of a paper discharge tray mechanism of the image reading and recording apparatus according to the embodiment of the invention. FIG. 3 is a view illustrating a discharge tray opening of the image reading and recording apparatus according to the embodiment of the invention. FIG. 2 is an electric board unit diagram of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is an electrical board attachment diagram of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 4 is a PCB cover attachment diagram of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is a photo interrupter attachment diagram of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 4 is an explanatory diagram for replacing an ink cartridge of the image reading and recording apparatus according to the embodiment of the invention. Explanatory drawing of the scanner open / close sensor of the image reading and recording apparatus which concerns on embodiment of this invention. FIG. 3 is an explanatory diagram of scanner opening / closing and paper discharge tray of the image reading and recording apparatus according to the embodiment of the present invention. The side cover attachment figure of the image reading and recording apparatus which concerns on embodiment of this invention. The card cover attachment figure of the image reading and recording apparatus which concerns on embodiment of this invention. The card cover attachment figure seen from the back surface of the image reading and recording apparatus which concerns on embodiment of this invention. Explanatory drawing of the stopper part of the conventional scan unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Panel part 2 Reading part 3 Recording part 4 Electric board part 5 Card slot part 21 Pressure plate 23 Glass 31 Recording paper tray 32 Recording paper auxiliary tray 38 Ink tank 39 Cartridge 41 Control board 42 Photointerrupter 44 for cartridge doors 44 Relay board 45 Power supply 100 Recording paper 231 Middle frame 131 Recording paper discharge tray 132 Recording paper discharge auxiliary tray 133 Cartridge door

Claims (1)

The document reading unit is configured above the document recording unit, and the document reading unit and the document recording unit are rotatably attached by a hinge, and have a mechanism for holding the document reading unit in an open state. In the document reading and recording apparatus having a stopper so that the document reading unit does not rotate more than the required angle,
The document reading and recording apparatus, wherein the stopper is provided separately from a mechanism member that holds the document reading unit in an open state and is in the vicinity of the rotation center.

Images