JP2010017998A - Inkjet recording apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable automatic opening of a paper discharge tray only when needed, for example, upon power-on or image recording initiation with a small number of parts in an image recording apparatus. <P>SOLUTION: When a releasing switch 72 of the paper discharge tray 45 is pressed by scanning of a recording part 31a, the lock of the paper discharge tray 45 is released. As a result, even when a roller, etc. used in conveyance of recording sheets are rotated other than the case of image recording, the paper discharge tray 45 is not unnecessarily opened. The tray can be automatically opened only when needed such as in the case of power on and the case of image recording initiation, without using an expensive part like a solenoid. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an image recording apparatus capable of forming an image by a reciprocating motion of a recording head such as an ink jet printer.

  Some conventional image recording apparatuses automatically open the paper discharge tray when the power is turned on or image recording is started. In these recording apparatuses, a stopper provided on a rotating shaft of a paper discharge tray is released by a solenoid, or opened by rotation of a roller used for conveying a recording sheet.

As an example of the above, Patent Document 1 below can be cited.
JP 08-067395 JP

  The conventional configuration increases the number of parts and is very expensive because a solenoid or the like is used. In addition, even if the rollers that are opened by the rotation of the rollers used for conveyance are rotated when it is not necessary to open the paper discharge tray, the paper output tray will open unnecessarily, and the paper will be discharged for the user. Unnecessary action of closing the tray will occur.

  In order to solve the above-described problems, the present invention has the following configuration.

  Inkjet including a sheet feeding unit for feeding a recording medium for recording an image, a conveying unit for conveying the fed recording medium, and a recording unit for discharging ink to the conveyed recording medium The recording apparatus includes a recording unit capable of pressing a switch by scanning the recording unit.

  In an inkjet recording apparatus including the paper feeding unit, the conveyance unit, and the recording unit, one or more switches can be pressed by scanning the recording unit that can change the image recording height depending on the type of recording medium and the operation of the recording unit. It has a recording part.

  In an ink jet recording apparatus including the paper feed unit, the transport unit, and the recording unit, the discharge tray is unlocked by a switch pressed by scanning of the recording unit, and the discharge tray is automatically opened. .

  In the ink jet recording apparatus including the paper feeding unit, the conveyance unit, and the recording unit, the discharge tray is unlocked by one or more switches pressed by scanning the recording unit capable of changing the image recording height, and automatically The paper discharge tray is opened.

  In the sheet feeding unit, the conveyance unit, the recording unit, and a recording apparatus capable of pressing a switch by scanning the recording unit, the switch is pressed when detecting the remaining amount of ink.

  As described above, according to the present invention, by pressing the discharge tray release switch by scanning the recording unit, the discharge tray can be rotated even when the roller used for transporting the recording sheet is rotated except during image recording. It can be opened automatically only when necessary, such as when power is turned on or when image recording is started, without needlessly opening and using expensive parts such as solenoids.

  Next, details of the present invention will be described in accordance with the description of the embodiments.

  An image reading and recording apparatus according to a first 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. As shown in FIG. 1, the panel unit 100, the scanner unit 200, and the engine unit 300 are configured. Each part will be described in turn.

  First, the panel unit 100 will be described.

  FIG. 2 is an enlarged view of the panel portion, FIG. 3 is a diagram showing the LCD lifted, and FIG.

  As a structure, each key 102 is fitted to the panel cover left 101a and the panel cover right 101b. The color start key 102a, the monochrome start key 102b, the stop key 102c, the cross key 102d, the mode key, the power key 102e, and the function key 102f are each integrally composed of one or more keys. 101 is attached. A tact switch (not shown) is soldered under the key 102 on a panel substrate (not shown).

  An LCD module (not shown) and an electric board (not shown) are built in the LCD unit 103, and are attached to the surface of the transparent LCD window 103a. The LCD unit 103 is configured to be rotatable about the LCD hinge 103b, and can be operated by the user.

  As shown in FIG. 3, the LCD unit 103 has a maximum opening / closing angle of about 110 degrees with respect to the horizontal plane. These rotation stoppers maintain this angle by the stopper rib 103c of the LCD unit in FIG. 4 and the stopper groove (not shown) of the panel cover collide with each other.

  The LCD unit 103 is designed to have a slight gap behind the LCD unit 103 when the LCD unit 103 is forcibly pulled to open more than 110 degrees, and interferes before the stopper breaks. Further, in a normal state, the gap is about 1 mm so as not to be damaged by opening and closing.

  The panel unit 100 is attached to the scanner unit 200 as a whole.

  Next, the scanner unit 200 will be described.

  FIG. 4 is a view of the main body when setting an original, and there is a glass 201 for setting the original face down. The glass 201 is pressed from above by a glass cover 202. It is attached to a scanner pressure plate 203 that suppresses the floating of the original, and a pressure plate white sheet 204 composed of a sponge and a white sheet, and a sponge frame 204a. The scanner pressure plate 203 is attached via a pressure plate hinge 205.

  FIG. 5 shows the internal structure of the scanner unit 2 with the glass 201 and the glass cover 202 removed from FIG. In the CCD reading unit 206, both pictures when moved to the left end and the right end are written.

  All these internal parts are attached to the scanner frame 207. A CCD reading unit 206 for reading an image is guided and moved on a shaft 208 and a rail 209. Further, the CCD reading unit 206 is decelerated by the driving gear unit 210 using a motor (not shown) as power and is driven via the timing belt 211. The timing belt 211 is hung on a pulley (not shown) at the opposite portion of the drive gear unit 210.

  Explaining these operations, the CCD reading unit 206 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 201.

  Next, the engine unit 300 of the recording apparatus will be described.

Outline of Recording Engine Unit An outline of the engine unit 300 of the recording apparatus applied to the embodiment of the present invention will be described.

  The recording apparatus in this embodiment is a color recording apparatus adopting an ink jet system, and the main part thereof has recording means having a structure as shown in FIG.

  FIG. 6 is a schematic perspective view showing the main mechanism of the engine unit of the recording apparatus in each embodiment of the present invention, and FIG. 7 is a schematic sectional view of the recording apparatus.

  The engine unit 300 includes a paper feed unit 1, a transport unit 2, a carriage unit 3, a paper discharge unit 4, a recovery device unit 5, and a carriage lifting / lowering mechanism unit 6.

  Each waist mechanism will be described.

Feeder 1
The paper feeding unit 1 includes a pressure plate 11 for stacking the recording sheets P, a paper feeding roller 12 for feeding the recording sheets P, a separation roller 13a for separating the recording sheets P, a return lever 14 for returning the recording sheets P to the stacking position, Etc. are configured to be attached to the ASF base 15.

  A paper feed tray 16 for holding the stacked recording sheets P is attached to the ASF base 15 or the exterior. The paper feed tray 16 is a multistage type and is used by being pulled out when in use.

  The paper feed roller 12 has a bar shape with a circular arc in cross section. One separation roller rubber is provided based on the sheet reference, and the recording sheet P is fed by this. Driving to the paper feed roller 12 is transmitted by the paper feed unit 1 and a planetary gear (not shown).

  A movable side guide 17 is movably provided on the pressure plate 11 to restrict the stacking position of the recording sheets P. The pressure plate 11 can rotate around a rotation shaft coupled to the ASF base 15 and is urged to the paper feed roller 12 by a pressure plate spring (not shown).

  A separation sheet (not shown) made of a material having a large friction coefficient, such as an artificial skin, is provided at a portion of the pressure plate 11 facing the paper feed roller 12 to prevent double feeding of the recording sheets P near the final stack. . The pressure plate 11 is configured to be able to contact and separate from the paper feed roller 12 by a pressure plate cam (not shown).

  Further, the ASF base 15 is provided with a separation roller holder 13 attached with a separation roller 13a for separating the recording sheets P one by one. The separation roller holder 13 is rotatable about a rotation shaft provided on the separation ASF base 15, and a separation roller spring ( (Not shown) is urged to the paper feed roller 12.

  The separation roller 13a is configured such that a clutch spring (not shown) is attached, and the portion to which the separation roller 13a is attached can rotate when a predetermined load or more is applied. The separation roller 13a is configured to be able to contact and separate from the paper feed roller 12 by a separation roller release shaft (not shown) and a control cam (not shown). The positions of the pressure plate 11, the return lever 14, and the separation roller 13a are detected by an ASF sensor 29.

  The return lever 14 for returning the recording sheet P to the stacking position is rotatably attached to the ASF base 15 and is urged by a return lever spring (not shown) in the release direction. When the recording sheet P is returned, the recording sheet P is rotated by the control cam (not shown).

  In a normal standby state, the pressure plate 11 is released by a pressure plate cam (not shown), the separation roller 13a is released by a control cam (not shown), the return lever 14 returns the recording sheet P, and the recording sheet P is back when stacked. It is provided at a loading position that closes the loading port so as not to enter.

  When paper feeding starts from this state, first, the separation roller 13a comes into contact with the paper feeding roller 12 by driving the motor. Then, the return lever 14 is released, and the pressure plate 11 contacts the paper feed roller 12.

  In this state, feeding of the recording sheet P is started. The recording sheet P is limited by a pre-stage separation unit (not shown) provided on the ASF base 15, and only a predetermined number of recording sheets P are sent to a nip portion composed of a paper feed roller 12 and a separation roller 13 a. The sent recording sheet P is separated at the nip portion, and only the uppermost recording sheet P is conveyed.

  When the recording sheet P reaches a later-described conveying roller 21 and pinch roller 22a, the pressure plate 11 is released by a pressure plate cam (not shown) and the separation roller 13a is released by a control cam (not shown).

  The return lever 14 is returned to the loading position by a control cam (not shown). At this time, the recording sheet P that has reached the nip portion composed of the paper feed roller 12 and the separation roller 13a can be returned to the stacking position.

Transport unit 2
The conveyance unit 2 is attached to a chassis 8 made of a bent metal sheet. The transport unit 2 includes a transport roller 21 that transports the recording sheet P and a PE sensor 23.

  The transport roller 21 has a configuration in which ceramic fine particles are coated on the surface of a metal shaft, and the metal portions of both shafts are received by bearings 21 a and attached to the chassis 7. A conveyance roller tension spring (not shown) is provided between the bearing 21a and the conveyance roller 21 in order to apply a load during rotation to the conveyance roller 21 and perform stable conveyance. Is giving the load.

  The transport roller 21 is provided with a plurality of driven pinch rollers 22a in contact therewith. The pinch roller 22 a is held by a pinch roller holder 22 and is urged by a pinch roller spring 22 b, so that the pinch roller 22 a comes into pressure contact with the transport roller 21 and generates a transport force for the recording sheet P.

  At this time, the rotating shaft of the pinch roller holder 22 is attached to the bearing of the chassis 7 and rotates around the shaft. Further, a paper guide flapper 24 and a platen 25 for guiding the recording sheet P are disposed at the entrance of the conveyance unit 2 to which the recording sheet P is conveyed.

  Further, the pinch roller holder 22 is provided with a PE sensor lever 23 a that transmits the leading edge and trailing edge detection of the sheet P to the PE sensor 23. The platen 25 is attached to the chassis 7 and positioned. The paper guide flapper 24 engages with the transport roller 21 and can rotate around a sliding bearing (not shown), and is positioned by contacting the chassis 7.

  In the above configuration, the recording sheet P sent to the transport unit 2 is guided by the pinch roller holder 22 and the paper guide flapper 24 and sent to the roller pair of the transport roller 21 and the pinch roller 22a.

  At this time, the PE sensor lever 23a detects the leading end of the conveyed recording sheet P, and thereby obtains the printing position of the recording sheet P. The recording sheet P is conveyed on the platen 25 by rotating the roller pair 21 and 22a by a conveyance motor (not shown). On the platen 25, a rib serving as a conveyance reference surface is formed to control the gap with the recording head 9, and to control the waste of the recording sheet P in combination with a later-described paper discharge unit. And, it is configured so that the smashing does not become large.

  The drive to the transport roller 21 is transmitted by a timing belt (not shown) to a pulley (not shown) provided on the shaft of the transport roller 21 by a rotational force of a transport motor (not shown) composed of a DC motor.

  A code wheel 26 on which markings are formed at a pitch of 150 to 300 lpi for detecting the amount of conveyance by the conveyance roller 21 is provided on the axis of the conveyance roller 21, and an encoder sensor (not shown) for reading the code wheel 26 is provided. Is attached to the chassis 7 at a position adjacent to the code wheel 26.

  A recording head 9 that forms an image based on image information is provided on the downstream side of the conveying roller 21 in the recording sheet conveying direction. As the recording head 9, an ink jet recording head equipped with a replaceable ink tank 92 for each color ink tank 92 is used.

  The recording head 9 can apply heat to the ink by a heater or the like. The heat causes the ink to boil, and ink is ejected from the nozzles (not shown) of the recording head 9 by pressure changes caused by the growth or contraction of bubbles due to the film boiling, so that an image is formed on the recording sheet P. .

Carriage part 3
The carriage unit 3 has a carriage 31 to which the recording head 9 is attached.

  The carriage 31 holds a guide shaft 32 for reciprocating scanning in a direction perpendicular to the conveyance direction of the recording sheet P, and a guide rail 71 for maintaining the gap between the recording head 9 and the recording sheet P by holding the rear end of the carriage 31. It is supported.

  The guide shaft 32 is attached to the chassis 7. The guide rail 71 is formed integrally with the chassis 7.

  The carriage 31 is driven by a carriage motor 33 attached to the chassis 7 via a timing belt 33a. The timing belt 33a is adjusted and supported by an idle pulley 33b.

  The timing belt 33a is coupled to the carriage 31 via a damper 35 made of rubber or the like, and reduces image unevenness by attenuating vibration of the carriage motor 33 or the like.

  A code strip 34 on which markings are formed at a pitch of 150 to 300 lpi for detecting the position of the carriage 31 is provided in parallel with the timing belt 33a.

  Further, an encoder sensor 34 a for reading the same is provided on a carriage substrate (not shown) mounted on the carriage 31. This carriage substrate (not shown) is also provided with contacts (not shown) for electrical connection with the recording head 9.

  Further, the carriage 31 includes a flexible substrate (not shown) for transmitting the recording head 9 head signal from the electric substrate 9.

  In order to fix the recording head 9 to the carriage 31, the carriage 31 is provided with an abutting portion (not shown) for positioning and pressing means (not shown) for pressing and fixing. The pressing means (not shown) is mounted on the head set lever 36, and is configured to act on the recording head 9 when the head set lever 36 is turned around the rotation fulcrum and set.

  Further, an automatic registration adjustment sensor (not shown) for automatically correcting the landing deviation of the ink ejected from the recording head 9 on the recording sheet P is attached to the carriage 31. A sensor (not shown) is a reflection type optical sensor, and an optimal registration adjustment value can be obtained by emitting light from the light emitting element and receiving reflected light to a predetermined print pattern on the recording sheet P.

  In the above configuration, when an image is formed on the recording sheet P, the roller pairs 21 and 22a convey the recording sheet P to the row position (position in the conveyance direction of the recording sheet P) where the image is formed, and the carriage 31 is moved by the carriage motor 33. The recording head 9 is moved to the row position for image formation (position perpendicular to the conveyance direction of the recording sheet P) and the recording head 9 is opposed to the image formation position.

  Thereafter, as described above, the recording head 9 ejects ink toward the recording sheet P by a signal from the electric substrate 8 to form an image.

Paper discharge unit 4
The paper discharge section 4 has two discharge rollers 41 and 42, a spur 43 configured to come into contact with the discharge rollers 41 and 42 with a predetermined pressure, and can be rotated by being driven. 41, 42 is composed of a gear train for transmitting.

  The paper discharge rollers 41 and 42 are attached to the platen 25. The discharge roller 41 on the downstream side in the recording sheet P conveying direction is provided with a plurality of rubber portions (not shown) on the metal shaft. The drive from the conveying roller 21 is driven by being transmitted to the paper discharge roller 41 via the idler gear.

  The discharge roller 42 provided on the upstream side of the discharge roller 41 has a structure in which a plurality of elastomer elastic bodies (not shown) are attached to a resin shaft. Drive to the paper discharge roller 42 is transmitted from the paper discharge roller 41 via an idler gear (not shown).

  The spur 43 is a SUS thin plate having a plurality of peripheral projections formed integrally with the resin portion and attached to the spur holder 44. The spur 43 is attached to the spur holder 44 and pressed against the discharge rollers 41 and 42 by a spur spring (not shown) provided with a coil spring in a rod shape.

  A spur is provided at a position corresponding to the rubber part and the elastic part of the paper discharge rollers 41 and 42, and mainly serves to generate the conveyance force of the recording sheet P, and the rubber of the paper discharge rollers 41 and 42 therebetween. There is a part that is provided at a position where there is no portion (not shown) and no elastic body portion (not shown), and mainly serves to suppress lifting when the recording sheet P is printed.

  By lifting both ends of the recording sheet P between the discharge rollers 41 and 42, holding the recording sheet P at the tip of the discharge rollers 41 and 42, and rubbing the print on the previous recording sheet P. A paper edge support (not shown) is provided to prevent damage. A resin member having a roller (not shown) at the tip is urged by a paper end support spring (not shown), and the roller (not shown) is pressed against the recording sheet P with a predetermined pressure. It is constructed so that it can be held by lifting and making a strainer.

  With the above configuration, the recording sheet P on which an image is formed by the carriage unit 5 is sandwiched by the nip between the paper discharge roller 42 and the spur 43, conveyed, and discharged to the paper discharge tray 45. The paper discharge tray 45 is disposed on the back side of the front cover 75.

  The discharge tray 45 rises toward the leading end, and the both ends of the discharge tray 45 are configured to be high in height, thereby improving the stackability of the discharged recording sheets P and preventing the printing surface from being rubbed.

Recovery device part 5
The recovery device unit 5 includes a pump 51 that performs a recovery device of the recording head 9, a cap 52 that suppresses drying of the recording head 9, a blade 53 that recovers the face surface around the nozzles of the recording head 9, and the like. Yes.

  The main drive of the recovery device is transmitted from the aforementioned AP motor 273. Basically, a one-way clutch (not shown) is provided so that the pump operates by rotation in one direction and the blade 53 operation and the cap 52 elevating operation act by rotation in another direction.

  The pump 51 is configured to generate a negative pressure by squeezing the two tubes 51a with a pump roller (not shown), and is connected from the cap 52 to the pump 51 via a valve 54 or the like.

  When the pump 51 is operated with the cap 52 in close contact with the recording head 9, unnecessary ink or the like is sucked from the recording head 9. A cap absorber 52a is provided in the cap 52 portion in order to reduce ink remaining on the face surface of the head 7 after suction.

  Therefore, the ink remaining in the cap 52 is sucked in a state where the cap 52 is opened so that the ink remains and does not cause a harmful effect. The waste ink sucked by the pump 51 is absorbed and held by a waste ink absorber (not shown) provided in the bottom case.

  A series of operations such as blade 53 operation and cap 52 elevating operation are controlled by a main cam (not shown) provided with a plurality of cams on the shaft. The cam and arm of each part act on a main cam (not shown) to perform a predetermined operation. The position of the main cam (not shown) can be detected by a position detection sensor (not shown) such as a photo interrupter (not shown).

  When the cap 52 descends, the blade 53 moves vertically in the scanning direction of the carriage 31 to restore the face surface of the recording head 9. A plurality of blades 53 are provided, one for recovering the vicinity of the nozzles of the recording head 9 and the other for recovering the entire face surface.

  Then, when it moves to the innermost position, it can come into contact with a blade cleaner (not shown) to remove ink or the like adhering to the blade 53 itself.

  The transmission and control of opening / closing of the valve 54 is performed by the paper discharge roller 41. By selecting the valve 54, the batch suction for all colors and the individual suction for each color can be handled as necessary. The valve position is detected by the valve position detection sensor 54a.

Carriage lifting mechanism 6
Next, a description will be given of a carriage lifting / lowering mechanism unit 6 that can move the carriage unit 3 closer to or away from the recording sheet P according to the type and print quality of the recording sheet P.

  Guide shaft cams attached to both ends of the guide shaft 32 by rotating the guide shaft 32 in which the carriage 31 reciprocates linearly by driving on the reverse rotation side of the driving source transmitting the driving to the paper feeding unit 1. The guide shaft 32 can be moved up and down by R, L, 61a, and 61b while being kept horizontal.

  With the above mechanism, the height of the carriage unit 3 can be adjusted according to the type of the recording sheet P, the print quality, and the operation of the carriage 31.

  The recording sheet P printed at the optimum carriage height by the carriage lifting mechanism 6 is discharged to the recording paper discharge tray 45 by the discharge roller pairs 41 and 43.

  The above is the main part constituting the recording device engine. The discharge tray automatic opening mechanism will be described in detail below based on these mechanisms.

  FIG. 8 is a perspective view of the opening mechanism of the discharge tray 45, and FIGS. 9 and 10 are an enlarged view and a side view of the discharge tray opening unit 45a. FIG. 11 is a simplified diagram of drive transmission from the carriage lifting mechanism 6 to the automatic discharge tray opening mechanism according to the first embodiment of the present invention.

  First, when the power of the image reading and recording apparatus is turned on or printing is started, the carriage unit 3 moves to the ink remaining amount detection position (carriage 31b) during the initial operation.

Thereafter, the carriage 31 is raised by the carriage lifting mechanism 6 at the timing when the remaining amount of ink is detected, and further moved to the away side, so that the switch boss 37 attached to the carriage is used for the side of the chassis. The hook release switch 72 can be pressed. (Carriage 31c)
Next, the discharge tray opening unit 45a will be described.

  One of the rotation centers of the discharge tray 45 is connected to the opening unit 45a. 9 and 10, the cam gear 46a is connected to the paper discharge tray 45, and the rotation angle of the cam gear 46a and the rotation angle of the paper discharge tray 45 are synchronized. In the closed state, the discharge tray 45 is pressed in the opening direction by the torsion coil spring 46b. However, since the hook 46c is hooked on the step portion of the cam gear 46a, it is held in a closed state.

  The switch 72 pushed by the carriage 31c is unlocked by pushing the hook 46c applied to the step of the cam gear 46a. When the cam gear 46a moves in the direction of the arrow H, the cam gear 46a is pressurized. Rotate in the direction of arrow K. The cam gear 46a is initially pressed by the torsion coil spring 46b, but the applied pressure is eliminated in the middle. This is because the paper discharge tray 45 can be opened by its own weight.

  Further, the cam gear 46a meshes with the oil damper 46d through an idler gear (not shown) from the middle. Thereby, the speed at which the paper discharge tray 45 opens is slowed down, and it is possible to suppress an impact sound when the paper discharge tray 45 is landed.

  The paper discharge tray key 47 can press the hook 46c from the outside of the main body in the direction of arrow J, and can manually unlock the cam gear 46a as well as automatically open. 45 can be opened.

  Also, the timing when the carriage 31 goes to press the switch can be shortened by performing the timing when the ink remaining amount is detected and the ink remaining amount detecting position is reached.

  An image reading and recording apparatus according to the second embodiment of the present invention will be described.

  FIG. 12 shows a simplified explanatory diagram of the second embodiment.

  In the second embodiment, the carriage lifting mechanism 6 of the first embodiment is omitted.

  As in the first embodiment, first, when the power of the image reading and recording apparatus is turned on or printing is started, the carriage unit 3 moves to the ink remaining amount detection position (carriage 31b) during the initial operation.

  Thereafter, when the remaining ink amount is detected, the carriage 31 is further moved to the away side, whereby the hook release switch 72 on the side of the chassis can be pushed by the switch boss 37 on the carriage. (Carriage 31c)

1 is a perspective 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. 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. 1 is a mechanism perspective view of an engine unit of an image reading and recording apparatus according to an embodiment of the present invention. 1 is a schematic sectional view of a mechanism of an engine unit of an image reading and recording apparatus according to an embodiment of the present invention. 1 is a perspective view of a paper discharge tray opening mechanism of an image reading and recording apparatus according to an embodiment of the present invention. FIG. 3 is an enlarged view of a discharge tray opening mechanism of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is a side view of a discharge tray opening mechanism of the image reading and recording apparatus according to the embodiment of the present invention. FIG. 3 is a simplified drive transmission diagram up to a discharge tray opening mechanism of the image reading and recording apparatus according to the first embodiment of the present invention. FIG. 10 is a simplified diagram of drive transmission to a discharge tray opening mechanism of an image reading and recording apparatus according to a second embodiment of the present invention.

Explanation of symbols

P Recording sheet X Carriage scanning direction (main scanning)
Y Recording sheet conveyance direction (sub scanning)
Z Carriage raising / lowering direction B CCD reading unit scanning direction H Direction in which hook is released J Direction in which paper discharge tray key is pressed K Direction in which cam gear rotates when hook is released 500 Image reading / recording device 100 Panel unit 200 Scanner unit 300 Engine Part 101 Panel cover 101a Panel cover left 101b Panel cover right 101c Panel cover stop rib 102 key 102a Color start key 102b Monochrome start key 102c Stop key 102d Cross key 102e Power key 102f Function key 103 LCD unit 103a LCD window 103b LCD hinge 103c LCD unit stopper rib 201 Glass 202 Glass cover 203 Scanner pressure plate 204 Pressure plate white sheet 204a Sponge frame 205 pressure plate hinge 206 CCD reading unit 207 scanner frame 208 shaft 209 rail 210 drive gear 211 timing belt 11 pressure plate 11a pressure plate spring 12 paper feed roller 13 separation roller holder 13a separation roller 14 return lever 15 ASF base 16 paper feed tray 17 side guide 21 Transport roller 21a Bearing 22 Pinch roller holder 22a Pinch roller 22b Pinch roller spring 23 PE sensor 23a PE sensor lever 24 Paper guide flapper 25 Platen 26 Code wheel 31 Carriage 31a Carriage (home position)
31b Carriage (ink remaining amount detection position)
31c Carriage (switch position)
32 Guide shaft 33 Carriage motor 33a Timing belt 33b Idle pulley 34 Code strip 34a Encoder sensor 35 Damper 36 Headset lever 37 Switch boss 41 Paper discharge roller 42 Paper discharge roller 43 Spur 44 Spur holder 45 Paper output tray 45a Paper output tray open Unit 46a Cam gear 46b Torsion coil spring 46c Hook 46d Damper 47 Discharge tray key 51 Pump 51a Pump tube 52 Cap 52a Cap absorber 53 Blade 54 Valve 54a Valve position sensor 61a Guide shaft cam R
61b Guide shaft cam L
7 Chassis 72 Hook release switch 73 Ink level detection sensor 75 Front cover 76 Cartridge door 8 Electric board 9 Recording head 92 Ink tank

Claims (4)

A paper feed unit for feeding a recording medium for recording an image;
A transport unit for transporting the fed recording medium;
In an inkjet recording apparatus having a recording unit that ejects ink onto a conveyed recording medium,
An ink jet recording apparatus comprising: a recording unit capable of pressing a switch during scanning of the recording unit. By scanning the recording unit, which can change the image recording height depending on the type of recording medium and the operation of the recording unit,
The inkjet recording apparatus according to claim 1, further comprising a recording unit capable of pressing one or a plurality of switches.   3. The ink jet recording apparatus according to claim 1, wherein the discharge tray is unlocked by a switch pressed by scanning of the recording section, and the discharge tray is automatically opened.   4. An ink jet recording apparatus according to claim 1, wherein a switch is pressed when detecting the remaining ink amount.

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