JP2007106609A - Image forming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve paper replenishing operation to a paper feeding tray when constituted as front lower paper feeding, reversal and front upper paper delivery by collecting loading, paper feeding and paper delivery of the paper feeding tray on the same side, particularly, on this side. <P>SOLUTION: A device body 1 has the paper feeding tray 2 for loading paper and a paper delivery tray 3 for stocking the paper of recording (forming) an image. The paper delivery tray 3 is rotatably supported by a support shaft 91, and a paper feeding pressure releasing part 92 is arranged for releasing paper feeding pressure when pulling out the paper feeding tray 2 to a tip part. The paper feeding pressure is released by pushing down a pressure plate 41 or the paper 42 of the paper feeding tray 2 by the tip paper feeding pressure releasing part 92 by upward lifting and rotating a rear end part of the paper delivery tray 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image forming apparatus.

  As an image forming apparatus (or image recording apparatus) such as a printer, a facsimile machine, and a copying apparatus, for example, an ink jet recording apparatus is known. The ink jet recording apparatus uses ink from a recording head to paper (not limited to paper, meaning that an image including OHP is formed and is also called a recording medium, a recording medium, or recording paper). It is possible to record high-definition images at high speed, with low running costs, low noise, and to record color images using multi-colored inks. It has the advantage of being easy.

  In addition, as an image forming apparatus, there is an electrophotographic type, which forms a toner image on a photosensitive member using a charging unit, an exposure unit, and a developing unit, and transfers the toner image onto a sheet by a transfer unit. Then, a fixing process is performed to form an image on the paper.

As a conventional image forming apparatus, for example, as described in Patent Document 1, a paper feed cassette is loaded from the front, paper is fed from the rear, and after image recording, the paper is discharged onto a paper discharge tray at the rear of the apparatus main body. There is something to do. Further, there are various types such as a paper tray provided at the rear of the apparatus main body, which feeds paper from the rear and discharges it to a paper discharge tray in front of the apparatus main body.
Japanese Patent Laid-Open No. 11-151841

  Such an image forming apparatus is now widely used for various business uses and personal uses including SOHO and is installed in a state where there is always sufficient space, for example, a dedicated printer stand. In addition, it tends to be placed on a desk together with a personal computer or in a rack or shelf.

  Therefore, it is preferable that the installation space of the image forming apparatus is as small as possible. Also, it is possible to place an object on the apparatus body when the upper surface of the apparatus body is flat rather than curved. Rather than occupying a single space with the forming apparatus, the space can be used more effectively. In addition, a flat upper surface that is as wide as possible can be used effectively and is easy to use.

  However, if the upper surface of the image forming apparatus main body is simply flattened and widened, there is an effect that it looks visually large, and the effect is diminished even if the apparatus is downsized. In addition, if the upper surface is simply widened, it becomes a spatial obstacle to the paper feed tray and paper output tray, making it difficult to load the paper feed tray and removing paper stocked in the paper output tray. Or the amount of the paper discharge tray or paper feed tray protruding from the apparatus main body increases, and the space occupied by the entire apparatus increases.

  Furthermore, even if the upper surface is widened, if operation keys (switches) and a display unit are provided on the upper surface, it is difficult to effectively utilize the upper surface. Furthermore, although it is possible to place an object when the upper surface of the apparatus main body is flattened, it is disadvantageous in terms of cost and the like to make a structure that can withstand an object with a heavy load, and it is necessary to make the user feel the load limit. .

  Further, as described above, it is preferable that the installation space of the image forming apparatus is small. However, in the configuration of the rear paper feeding and the front paper ejection as in the past, the paper feeding tray and the paper ejection tray can be installed even if the main body itself can be downsized. The overall size including the space (the space when the apparatus is projected onto the placement surface from above) becomes quite large, and it is difficult to install it on an office desk or in a rack.

  In this regard, as described in Patent Document 1, in the apparatus in which the paper feed tray and the paper discharge tray are arranged on the same side, the overall space is reduced, but the paper feed tray (paper feed cassette) is placed in the paper feed direction. Therefore, a sufficient space is required at the front and rear of the main body of the machine, and if a space for securing the paper cassette is included, a large space is required. It is difficult to install on a desk or in a rack.

  Therefore, in order to reduce the overall size of the apparatus, the configuration in which the loading of the paper feeding tray and the paper feeding and paper ejection are integrated on the same side, particularly the front side, is the front lower paper feeding, inversion, and front upper paper ejection. Although it is considered preferable, in this case, the paper feed tray is positioned below the paper discharge tray, which makes it difficult to pull out the paper feed tray when supplying paper to the paper feed tray.

  Further, in this case, particularly in an ink jet recording apparatus, the paper is reversed with a small rotation radius in order to reduce the overall height, but in order to cope with the increase in the amount of discharged paper stacks accompanying the increase in speed, It is necessary to provide a certain amount of drop between the paper mouth and the paper discharge tray. In order to increase the speed and reduce the depth, it is more effective to feed and transport the paper in the short direction.

  However, if the sheet is reversed with a small turning radius, the sheet is likely to be rounded in the transport direction, and smooth discharge may be difficult. Similarly, if there is a certain level of drop between the paper discharge port and the paper discharge tray, the paper will fall to the paper discharge tray with its own weight curled at the leading edge, making smooth paper discharge difficult. Further, since the image is formed by adhering ink droplets, the paper is easily rounded, and a phenomenon occurs in which the paper to be ejected is rounded due to the influence of the fiber direction of the paper itself.

  Furthermore, in order to improve the operability of the image forming apparatus, it is possible to realize a full front operation in which not only the paper supply / discharge but also the replacement of the ink cartridge, the power switch, the connection with the host, and the power cord can be performed from the front. Is preferred.

  In addition, recent image forming apparatuses have many accessories such as instruction manuals, USB cables, spare ink, installation disks, etc. However, storing these accessories separately from the apparatus is lost, etc. Will be invited.

  SUMMARY An advantage of some aspects of the invention is that it provides an image forming apparatus with improved paper supply replenishment operability with respect to a paper feed tray.

  In order to solve the above-described problems, the image forming apparatus according to the present invention is configured such that the paper discharge tray is rotatable in the vertical direction and is hung on the paper loaded in the paper feed tray when the paper discharge tray is rotated. The mechanism is provided with a mechanism for releasing the paper feeding pressure.

  The image forming apparatus according to the present invention is configured such that the paper discharge tray can be rotated in the vertical direction, and the paper feed tray moves in the direction opposite to the paper feed direction when the paper discharge tray is rotated.

  Each of these image forming apparatuses can be configured such that the paper discharge tray also serves as the upper cover of the paper feed tray. Further, it is possible to adopt a configuration in which the opening of the paper feed tray is defined by the rotation amount of the paper discharge tray and the pullable amount of the paper feed tray. In addition, the paper feed tray may have an opening on the front side and an end fence that blocks the opening.

  Further, the paper discharge tray can be configured to have an inclined surface that becomes higher on the downstream side in the paper discharge direction. Further, the paper discharge tray can be configured such that both end portions in the direction orthogonal to the paper discharge direction are formed lower than the central portion.

  According to the image forming apparatus of the present invention, the paper discharge tray can be rotated in the vertical direction, and the paper feed pressure applied to the paper loaded in the paper feed tray when the paper discharge tray is rotated is released. Because it has a structure equipped with

  According to the image forming apparatus of the present invention, the sheet discharge tray can be rotated in the vertical direction, and when the sheet discharge tray is rotated, the sheet feed tray moves in the direction opposite to the sheet feed direction. The operability of the paper supply operation is improved.

  According to the image forming apparatus of the present invention, the sheet discharge tray can be rotated in the vertical direction, and when the sheet discharge tray is rotated, the sheet feed tray moves in the direction opposite to the sheet feed direction. The operability of the paper supply operation is improved.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective explanatory view of an ink jet recording apparatus as an image forming apparatus according to the present invention as viewed from the front side, and FIG. 2-A is a perspective explanatory view of a state in which a cover of an ink cartridge loading portion of the recording apparatus is opened. 2-B is an explanatory diagram for explaining the loading of the ink cartridge, and FIG. 3 is a perspective explanatory diagram viewed from the rear side of the recording apparatus.

  This ink jet recording apparatus includes an apparatus main body 1, a paper feed tray 2 for loading paper loaded in the apparatus main body 1, and a waste paper for stocking paper on which an image is recorded (formed) mounted on the apparatus main body 1. And a paper tray 3.

  The upper surface 11 of the apparatus main body 1 is formed by an upper cover 10 that can be opened and closed. The upper surface 11 of the apparatus main body 1 is a substantially flat surface, and the front surface 12 formed by the front cover of the apparatus main body 1 is an upper surface 11. It inclines from the front end of the head toward the diagonally lower rear.

  In this manner, by tilting the front surface 12 of the apparatus main body 1 from the front end portion of the upper surface 11 toward obliquely downward and rearward, the upper surface 11 can have a shape in which the front side of the apparatus main body is widened. Thereby, the upper surface 11 of the apparatus main body 1 can be widely used, and since the front surface 12 is inclined downward and rearward, it looks visually small, and the user can purchase the upper surface 11 of the apparatus main body 1 at the time of purchase. Will be recognized as a small device that is wide and easy to use.

  Further, on the lower side of the inclined front surface 12, a paper discharge tray 3 and a paper feed tray 2 protruding forward (front side of the apparatus main body) are provided. Since the front surface 12 of the apparatus main body 11 is inclined and the lower side is retracted, the depth D (FIG. 4) of the entire apparatus including the paper feed tray 2 and the paper discharge tray 3 is shortened.

  At the same time, the visible area on the paper discharge tray 3 is widened, and it becomes easy to take out the paper discharged onto the paper discharge tray 3 and check the recording state. In addition, it is easy to load (set) paper in the paper feed tray 2 and to operate the side guides provided in the paper feed tray 2.

  Furthermore, one end side of the front surface 12 of the apparatus main body 1 has a cartridge loading portion 4 that protrudes forward from the front surface 12 and is lower than the upper surface 11. An operation key or the like is provided on the upper surface 4 a of the cartridge loading portion 4. An operation unit 5 such as a display is arranged. The cartridge loading unit 4 has a front cover 15 that can be opened and closed for detaching an ink cartridge 38 that is a recording liquid cartridge described later.

  As described above, since the operation unit is not provided on the upper surface 11 of the apparatus main body 1, the space on the substantially flat upper surface 11 can be effectively used, and the apparatus is installed in a rack (shelf) 18 as shown in FIG. 5. Even when the main body 1 is housed and used, the operation of the operation unit 5 and display confirmation can be facilitated, and even when the object 19 is placed on the upper surface of the apparatus main body 1 as shown in FIG. Operation and display confirmation can be easily performed. Furthermore, since the ink cartridge 38 can be detached from the front surface (front operation), the operability is improved.

  Further, the upper cover 10 of the apparatus main body 1 is mounted so as to be openable and closable including the front end portion 11 a of the upper surface 11, and the front end portion 11 a is an inclined surface 11 b cut obliquely along the front surface 12. Thereby, when opening the upper cover 10, it becomes easy to put on a finger and opening / closing operation becomes easy.

  Further, in this ink jet recording apparatus, a step 21 is provided at a substantially middle portion of the substantially flat upper surface 11 (upper surface of the upper cover 10) of the apparatus main body 1 to visually divide it into a front upper surface 11A and an upper rear surface 11B. ing.

  Thus, by visually dividing the substantially flat upper surface 11 of the apparatus body 1 back and forth, there is an effect that the depth of the apparatus body 1 having the broad upper surface 11 visually and psychologically looks small, By being divided | segmented, it can suppress psychologically that a thing with a big load is mounted, and it can prevent that the upper cover 10 is damaged. That is, the upper surface 11 of the apparatus main body 1 is widened to be easy to use, and the visual and psychological enlargement of the entire apparatus 1 is suppressed, and the load limit of the upper surface 11 is psychologically limited.

  Further, by dividing the upper surface 11 by the step 21, the overall rigidity of the upper cover 10 forming the upper surface 11 can be increased, and the step 12 is provided so that the front surface 11A is lower than the upper surface 11B. The visual effect that the overall height of the apparatus main body 1 looks small can be brought out.

  Here, the upper surface 11 is divided into front and rear by a step 21, but, in addition, as shown in FIG. 7, the front surface 11 A and the upper surface 11 B are color-coded, or instead of the step 21 as shown in FIG. It is also possible to divide by visual division elements such as forming a color band 22 or forming a convex part having a very small height instead of the step 21 (not shown). .

  Further, in the examples shown in FIGS. 7 and 8, the step 21 for dividing the upper surface 11 is not formed as shown in FIG. That is, in these examples, the upper surface 11 has a flat front surface (full flat), so that even when an object is placed on the upper surface 11 of the apparatus body 1, it does not tilt and becomes easier to use.

  Further, when the upper surface 11 of the apparatus main body 1 is formed to be fully flat, as shown in FIG. 9, the upper surface 11 can be configured not to be visually divided into front and rear. When the apparatus main body 1 is housed and used in a rack (shelf) 18 as shown in FIG. 5 described above, it is possible to check out the loading / unloading operation, operation of the operation unit 5 and display. The effect that it can carry out easily is acquired.

  Next, the mechanism part of the ink jet recording apparatus will be described with reference to FIGS. 10-A, 10-B, and 10-C. 10A is a schematic configuration diagram for explaining the overall configuration of the mechanism section, FIG. 10B is a plan view for explaining a main part of the mechanism section, and FIG. 10C is for describing an ink supply system of the mechanism section. It is a schematic perspective explanatory drawing to provide.

  A carriage 33 is slidably held in the main scanning direction by a guide rod 31 which is a guide member horizontally mounted on the left and right side plates 301A and 301B constituting the frame 301, and the stay 32, and a main scanning motor not shown in FIG. B moves and scans in the direction indicated by the arrow (carriage main scanning direction).

  The carriage 33 is provided with a recording head 34 including four ink jet heads for ejecting ink droplets of yellow (Y), cyan (C), magenta (M), and black (Bk). They are arranged in a direction crossing the main scanning direction, and are mounted with the ink droplet ejection direction facing downward.

  As an inkjet head constituting the recording head 34, a piezoelectric actuator such as a piezoelectric element, a thermal actuator that uses a phase change caused by film boiling of a liquid using an electrothermal transducer such as a heating resistor, and a metal phase change caused by a temperature change. A shape memory alloy actuator to be used, an electrostatic actuator using an electrostatic force, or the like as an energy generating means for discharging ink can be used.

  A driver IC is mounted on the recording head 34 and is connected to a control unit (not shown) via a harness (flexible print cable) 302.

  In addition, the carriage 33 is equipped with a sub tank 35 for each color for supplying ink of each color to the recording head 34. Each color sub-tank 35 is supplementarily supplied with ink of each color from an ink cartridge 38 which is a main tank via an ink supply tube 36 of each color. The ink cartridge 38 contains ink of each color of yellow (Y), cyan (C), magenta (M), and black (Bk) corresponding to each color.

  Further, as shown in FIG. 10-B, each ink cartridge is stored in the cartridge storage unit 4, and the cartridge storage unit 4 is provided with a supply pump unit 304 for feeding ink in the ink cartridge 38. ing. The ink supply tube 16 is held by the locking member 305 on the rear plate 301C constituting the frame 301 in the middle of scooping.

  On the other hand, as a paper feeding unit for feeding the paper 42 stacked on the paper stacking unit (pressure plate) 41 of the paper feeding tray 3, a half-moon roller (feeding) that separates and feeds the paper 42 one by one from the paper stacking unit 41. A separation pad 44 made of a material having a large friction coefficient is provided facing the paper roller 43) and the paper feed roller 43, and the separation pad 44 is urged toward the paper feed roller 43 side.

  As a transport unit for transporting the paper 42 fed from the paper feed unit on the lower side of the recording head 34, a transport belt 51 for transporting the paper 42 by electrostatic adsorption, and a paper feed unit The counter roller 52 for transporting the paper 42 fed through the guide 45 while sandwiching it between the transport belt 51 and the paper 42 fed substantially vertically upward are changed by approximately 90 ° and copied onto the transport belt 51. A conveyance guide 53 for adjusting the pressure and a tip pressure roller 55 urged toward the conveyance belt 51 by a pressing member 54. In addition, a charging roller 56 that is a charging unit for charging the surface of the conveyance belt 51 is provided.

  Here, the conveyance belt 51 is an endless belt, and is configured to wrap around the conveyance roller 57 and the tension roller 58 and circulate in the belt conveyance direction (sub-scanning direction) in FIG. 10-B. ing. The transport belt 51 is a surface layer that becomes a sheet adsorbing surface formed of a resin material having a pure thickness of about 40 μm that is not subjected to resistance control, such as ETFE pure material, and resistance control by carbon is performed using the same material as the surface layer. It has a back layer (medium resistance layer, ground layer).

  The charging roller 56 is disposed so as to come into contact with the surface layer of the conveyor belt 51 and to be rotated by the rotation of the conveyor belt 51, and 2.5N is applied to both ends of the shaft as a pressing force. The transport roller 57 also serves as the above-described ground roller, and is in contact with the middle resistance layer (back layer) of the transport belt 51 and is grounded.

  In addition, a guide member 61 is disposed on the back side of the conveyance belt 51 so as to correspond to a printing area by the recording head 34. The upper surface of the guide member 61 protrudes closer to the recording head 34 than the tangent line of the two rollers (the conveyance roller 57 and the tension roller 58) that support the conveyance belt 51. As a result, the conveyance belt 51 is pushed up and guided by the upper surface of the guide member 61 in the printing region, so that highly accurate flatness is maintained.

  Further, a plurality of grooves are formed in the main scanning direction, that is, in a direction orthogonal to the transport direction, on the surface side of the guide member 61 that contacts the back surface of the transport belt 51 to reduce the contact area with the transport belt 51. The transport belt 51 can smoothly move along the surface of the guide member 61.

  Furthermore, guide rollers 63 and 64 that are in contact with the back side of the conveyor belt 51 are rotatably arranged on the upstream side and the downstream side in the conveyance direction of the guide member 61. The guide rollers 63 and 64 are preferably arranged close to both ends of the guide member 61 in the transport direction.

  Further, as a paper discharge unit for discharging the paper 42 recorded by the recording head 34, a separation claw 71 for separating the paper 42 from the transport belt 51, a paper discharge roller 72, and a paper discharge roller 73 are provided. A paper discharge tray 3 is provided below the paper discharge roller 72. Here, the height from between the paper discharge roller 72 and the paper discharge roller 73 to the paper discharge tray 3 is increased to some extent in order to increase the amount that can be stored in the paper discharge tray 3.

  A double-sided paper feed unit 81 is detachably mounted on the back surface of the apparatus main body 1 (see also FIG. 3). The double-sided paper feeding unit 81 takes in the paper 42 returned by the reverse rotation of the transport belt 51, reverses it, and feeds it again between the counter roller 52 and the transport belt 51. A manual paper feed unit 82 is provided on the upper surface of the duplex paper feed unit 81.

  Further, as shown in FIG. 10B, a maintenance / recovery mechanism (subsystem) 311 for maintaining and recovering the nozzle state of the recording head 34 is provided in the non-printing area on one side of the carriage 33 in the scanning direction. It is arranged. In this subsystem 311, a cap member 312 for capping each nozzle surface of the recording head 34, a wiper blade 313 for wiping the nozzle surface, and idle ejection (ejection of droplets that do not contribute to image recording) are performed. An empty discharge receiver 314 for receiving droplets discharged when performing the operation is provided. Similarly, in the non-printing area on the other side in the scanning direction of the carriage 33, an empty discharge receiver 315 for receiving liquid droplets at the time of empty discharge is arranged.

  In the ink jet recording apparatus configured as described above, the sheets 42 are separated and fed one by one from the sheet feeding tray 2, and the sheet 42 fed substantially vertically upward is guided by the guide 45, and the transport belt 51 and the counter roller 52, the leading end is guided by the conveying guide 53 and pressed against the conveying belt 51 by the leading end pressing roller 55, and the conveying direction is changed by about 90 °.

  At this time, a positive voltage and a negative output are alternately repeated from the high voltage power source to the charging roller 56 by a control circuit (not shown), that is, an alternating voltage is applied, and a charging voltage pattern in which the conveying belt 21 is alternating, that is, In the sub-scanning direction, which is the circumferential direction, plus and minus are alternately charged in a band shape with a predetermined width. When the paper 42 is fed onto the conveying belt 51 that is alternately charged with plus and minus, it polarizes to the opposite charge to the charging pattern in the paper 42, so that a capacitor connected in parallel is formed. 42 is attracted to the transport belt 51, and the paper 42 is transported in the sub-scanning direction by the circular movement of the transport belt 51.

  Therefore, by driving the recording head 34 according to the image signal while moving the carriage 33, ink droplets are ejected onto the stopped paper 42 to record one line, and after the paper 42 is conveyed by a predetermined amount, Record the next line. Upon receiving a recording end signal or a signal that the trailing edge of the paper 42 has reached the recording area, the recording operation is finished and the paper 42 is discharged onto the paper discharge tray 3.

The details of the relationship between the paper feed tray 2 and the paper discharge tray 3 in this recording apparatus will be described with reference to FIGS.
The paper feed tray 2 urges the pressure plate 41 toward the paper feed roller 43 so that the paper feed pressure is applied to the paper 42 even in the standby state. Thereby, stable paper feeding can be performed.

  On the other hand, the paper discharge tray 3 also serves as an upper cover of the paper feed tray 2, and is rotatably supported by a support shaft 91 as shown in FIG. A paper feed pressure release unit 92 for releasing the paper feed pressure is provided.

  As a result, the rear end portion of the paper discharge tray 3 is lifted upward and rotated, so that the paper feed pressure release portion 92 at the front end pushes down the pressure plate 41 (when there is no paper 42) or the paper 42 of the paper feed tray 2. To release the paper feed pressure.

  Therefore, even when the sheet feeding pressure is always applied, a simple operation of lifting the sheet discharge tray 3 is not required without requiring a special operation for releasing the sheet feeding pressure, for example, an operation such as a sheet feeding pressure release button. The paper feed pressure can be released. As a result, it is possible to prevent the paper feed tray 2 from being pulled out while the paper feed pressure is applied, the paper supply is performed, and the paper feed tray 2 is pushed in again while receiving the paper feed pressure, thereby causing a jam. .

  In addition, since the paper discharge tray 3 also serves as the upper lid of the paper feed tray 2, it is difficult for dust and the like to enter the paper feed tray 2, and the paper feed pressure is increased by the rotation of the paper discharge tray 3 as described above. It is possible to adopt a configuration for canceling.

  In this ink jet recording apparatus, as shown in FIG. 11A, the discharge tray 3 is changed from the state in which the discharge tray 3 covers the paper feed tray 2 as shown in FIG. By rotating and lifting, an urging means for urging the front end portion of the paper feed tray 2 to the rear side (the front side of the apparatus main body) works, and the paper feed tray 2 is slightly moved toward the front side of the apparatus main body (this implementation). It is configured to extrude (about 20 mm in the form).

  Thus, when the paper 42 is replenished to the paper feed tray 2, the paper feed pressure is released and the paper feed tray 2 is pushed forward by lifting the paper discharge tray 3 which is also the upper lid. The release of the paper pressure can be visually confirmed, and the paper feed tray 2 can be easily pulled out.

Here, the state before and after the paper feed tray is set will be described with reference to FIGS.
First, as shown in FIG. 12, a cassette bottom plate 41 is rotatably held by a support shaft 121 in the paper feed tray 2. Further, an arm member 122 is rotatably supported by a support shaft 123 at the front end portion of the paper feed tray 2, and one end portion of the arm member 122 and the bottom plate 41 are connected by a separation spring 124. The paper 42 can be set on the bottom plate 41 in the state shown in FIG.

  Further, as shown in FIG. 13, when the paper feed tray 2 is pushed into the apparatus main body to be set, it is provided at the front end of the paper feed tray 2 by the guide member 125 provided in the apparatus main body 1. The distal end portion of the arm member 122 is guided and rotated. At this time, since the bottom plate 41 and the arm member 122 are connected by the separation spring 124, the bottom plate 41 rises according to the rotation of the arm member 122, and the desired separation is performed on the paper 42 set on the bottom plate 41 as described above. Pressure will be applied.

  When the paper feed tray 2 is set in the apparatus main body 1 in this way, the bottom plate 4 of the paper feed tray 2 is in contact with the paper feed roller 43 at the leading end, so that the arm member 122 is always watched in FIG. A rotating force is applied by the separation spring 124. For this reason, a force is always applied to the apparatus main body 1 in the drawing direction of the paper feed tray 2. By utilizing this force, as will be described later, the paper feed tray 2 is released (fixed out) from the apparatus main body 1 at the same time as the paper feed tray 2 is released from being fixed.

The details of the paper feed tray releasing mechanism will be described with reference to FIGS.
As described above, the paper discharge tray 3 is rotatably supported by the support shaft 91 with respect to the frame of the apparatus main body 1 and lifts the paper discharge tray 3 when paper is supplied. When the paper discharge tray 3 is lifted, a lever 126 that is rotatably attached to the frame of the apparatus main body 1 is pushed by a lever portion provided in the vicinity of the support shaft 91 that serves as a rotation fulcrum of the paper discharge tray 3. Rotates around the support shaft 127 as a rotation fulcrum.

  By the rotation of the lever 126, the lever 129 disposed below the lever 126 is pushed. The lever 129 is disposed on the frame of the apparatus body 1 so as to be movable in the left-right direction. Further, as shown in FIG. 15, an arm member 130 that rotates in conjunction with the movement of the lever 129 is attached. The arm member 130 is rotatably arranged with the support shaft 131 as a rotation center.

  On the other hand, as shown in FIG. 16, the paper feed tray 2 is fixed to the apparatus main body by the claw part 133 provided on the lower surface of the paper feed tray 2 being caught by the frame 134 of the apparatus main body 1. Is flexible and deformable. Here, when the arm member 130 rotates and moves in the direction indicated by the arrow in FIG. 16, the claw portion 133 of the paper feed tray 2 is lifted in the direction indicated by the arrow in FIG. The hook is released. At this time, as described above, the paper feed tray 2 is automatically pushed to the near side because the pushing force is applied to the near side of the apparatus main body 1 as described above.

  As shown in FIG. 14, the lever 126 includes a lever main body 136, a lever auxiliary 137, and a spring 138, and the lever auxiliary 137 is held by the lever main body 136 via the spring 138. Since the paper feed tray 2 and the paper discharge tray 3 are linked via a release mechanism, when simply connected, the paper discharge tray 3 is lowered when the paper feed tray 2 is set in the apparatus main body. This is because the sheet feed tray 2 can be set regardless of the position of the sheet discharge tray 3. When the paper feed tray 2 is set first and the paper discharge tray 3 is lowered, the lever portion of the paper discharge tray 3 pushes the lever 126, but the lever auxiliary 137 is supported by the spring 138 against the lever main body 136. Therefore, the lever auxiliary 137 escapes and does not affect the paper feed tray 2.

  With such a configuration, it is possible to automatically pull out (push out) the paper feed tray 2 to the near side in conjunction with the vertical movement operation of the paper discharge tray.

  Further, the entire sheet feeding tray 2 is configured not to be pulled out from the apparatus main body 1, and as shown in FIG. 17, the height of the opening formed between the sheet feeding tray 2 and the sheet discharge tray 3 when the sheet feeding tray 2 is pulled out. H is reduced, that is, the opening amount of the paper feed tray 2 is limited by the rotation amount of the paper discharge tray 3 and the drawing amount of the paper feed tray 2. As a result, the user can be prevented from trying to set a large amount of paper in the paper feed tray 2, and erroneous paper supply can be suppressed.

  Further, as shown in FIG. 18, the end fence 95 is configured to block the opening 2a at the opening 2a of the paper feed tray 2, so that it is difficult to insert the paper from the opening 2a and prevent erroneous paper supply. be able to.

Next, the paper discharge tray 3 will be described with reference to FIGS. FIG. 19 is an explanatory perspective view of the main part of the recording apparatus, and FIG. 20 is an explanatory view seen from the front side of the paper discharge tray.
The paper discharge tray 3 has an inclined portion 101 that is inclined so that the downstream side is higher in the paper discharge direction, and a step is provided at both ends in a direction orthogonal to the paper discharge direction so that both ends 102 are in the center (here, , Inclined portion) 101.

  Thus, by having the inclined portion 101 that becomes higher in the discharge direction in the discharge direction, even when the number of sheets that can be stocked is increased by providing a drop between the discharge roller 73 and the discharge tray 3, the discharge can be performed. Since the leading edge of the paper 42 that has been landed quickly, the recorded paper 42 can be prevented from being rounded.

  In particular, in the case of a configuration in which the rotation radius of the transport roller 51 is reduced for downsizing and the fed paper is transported after being changed by about 90 °, as in this ink jet recording apparatus, or in the case of ink jet recording. Since the paper 42 tends to be rounded, the curling of the paper 2 is suppressed as described above, thereby preventing the next paper to be ejected from colliding with the paper already ejected on the paper ejection tray 3. And smooth discharge can be performed.

  Further, by forming the both end portions 102 in the direction orthogonal to the paper discharge direction of the paper discharge tray 3 lower than the central portion 101, even when the discharged paper 42 is rounded, as shown in FIG. The roundness at both ends of the paper 42 can be released, and smooth paper discharge can be performed.

  Next, a transport cover mounted on the apparatus main body 1 in place of the double-sided paper feed unit 81 will be described. First, a mounting structure of the double-sided paper feed unit 81 will be described with reference to FIGS. 21 and 22. 21 is an explanatory diagram of a state before the unit is mounted, and FIG. 22 is an explanatory diagram of a state after the unit is mounted.

  The apparatus main body 1 is provided with a notch portion 141 for positioning the double-sided paper feed unit (vertical direction), and the double-sided paper feed unit 81 is provided with a boss portion 142 that can be fitted into the notch portion 141. Therefore, when the double-sided paper feeding unit 81 is attached to the apparatus main body 1, the boss 142 provided in the unit 81 is fitted into the notch 142 and positioned.

  The double-sided sheet feeding unit 81 is provided with a lever 144 that can be rotated by a support shaft 143, and a leading end portion (locking portion) 144 a of the lever 144 can be locked to a fixing pin 145 on the apparatus main body 1 side. ing. Therefore, after positioning the double-sided paper feeding unit 81 on the apparatus main body 1, the lever 144 is rotated and the tip end 144 a of the lever 144 is hooked on the fixing pin 145 provided on the apparatus main body 1. As shown, a duplex feeding unit 81 is fixed to the apparatus main body 1.

Next, the transport cover will be described with reference to FIGS. FIG. 23 is a perspective explanatory view of the recording apparatus as viewed from the back side, and FIG. 24 is a schematic cross-sectional explanatory view of the transport cover.
In this ink jet recording apparatus, when the double-sided paper feed unit 81 is not used, the internal transport mechanism is exposed. Therefore, as shown in FIG. 23, the transport cover 111 having substantially the same outer shape as the double-sided paper feed unit 81. Can be installed.

  In this case, the shape of the outer surface of the transport cover 111 is substantially aligned with the outer surfaces of the projecting portions 1 a and 1 b projecting at both ends of the back portion of the apparatus main body 1. By adopting an outer shape that does not protrude, the apparatus main body 1 is prevented from appearing visually large.

  Further, the inside of the transport cover 111 is a storage portion 112, and a lid member 113 that can be opened and closed by a hinge 114 is provided on the upper surface. Therefore, consumables, accessories, and the like can be stored and stored in the storage portion 112 of the transport cover 111 such as instruction manuals, installation disks, and spare ink. As a result, when the double-sided paper feed unit 81 is not used, it is possible to configure a device having a clean appearance having a storage portion by attaching the transport cover 111.

  Here, an example in which the transport cover 111 itself constitutes the wall surface of the storage unit 112 has been described. However, a storage pocket that is a separate part from the transport cover 111 is attached to the transport cover 111, or is fixed or integrated. It can also be molded.

Next, a configuration for realizing a front operation in the ink jet recording apparatus will be described.
In this ink jet recording apparatus, as described above, paper feeding and paper discharge can be performed on the front side, and as shown in FIG. (Desorption) is possible.

  In order to perform such a front operation, as described above, the carriage 33 is provided with the sub tank 35 for supplying ink to the recording head 34, and ink is supplied to the sub tank 35 from the ink cartridge 38. In addition, the ink cartridge 38 needs to be thin.

An example of the ink cartridge 38 used in the above-described ink jet recording apparatus will be described with reference to FIGS.
The ink cartridge 38 includes an ink bag 402 that is filled with ink, and a housing 403 that stores the ink bag 402. The casing 403 includes a first casing 411, a second casing 412, and a third casing 413. The first casing 411 and the second casing 412 protect the side surface of the ink bag 402. A casing portion serving as a protective cover is configured. That is, the housing 403 is divided into a first housing 411 and a second housing 412 that store the ink bag 402 on a surface parallel to the ink supply direction (ink discharge direction).

  Here, an example of the configuration of the ink bag 402 will be described with reference to FIGS. 28 is an explanatory side view of the ink bag, FIG. 29 is an explanatory view of FIG. 28 illustrating the state in which the ink bag is filled with ink, and FIG. 30 shows the bag body of the ink bag. FIG. 31 is an explanatory side view of the holding member of the ink bag, FIG. 32 is an explanatory view of the holding member of FIG. 31 viewed from the back side, and FIG. 33 is a front view of the holding member of FIG. 34 is an explanatory view seen from the side, and FIG. 34 is a cross-sectional explanatory view of the main part of the ink discharge port of the ink bag.

  As shown in FIGS. 28 and 29, the ink bag 402 is formed of a resin holding member 422 on one side of the long side of a bag body 421 having a substantially rectangular shape (in this case, a rectangular shape) made of an aluminum laminate film. Is fixed (welded).

  As shown in FIG. 30, the bag body 421 uses an aluminum laminate film 430 having a structure in which a dry lamination 426, an aluminum film 427, a dry lamination 428, and a PA 429 are sequentially laminated on the LDPE 25 (not limited to this). 28 and 29, the periphery of the two aluminum laminate films 430 and 430 (the hatched area in FIG. 28) are welded to each other and the holding member 422 to form a bag shape. It is. The bag main body 421 does not have a conventional frame body for maintaining the shape inside, and has flexibility as a whole, so that the remaining amount of ink is extremely reduced.

  As shown in FIGS. 31 to 33, the holding member 22 is integrally formed with a connecting portion 432 for heat-welding the bag body 421 on one surface side of the flange portion 431, and a hollow ink is formed on the other surface side of the flange portion 431. A filling port portion 433 (shown in a state before fusion sealing) and a hollow ink discharge port portion 434 are integrally formed.

  Here, as shown in FIG. 32, the connecting portion 432 has both end portions (end portions in the longitudinal direction of the holding member 422) formed in a tapered shape to have a substantially rhombus shape, and a concave portion 432a is formed on the outer peripheral surface. Thereby, the aluminum laminate films 430 and 430 forming the bag body 421 can be reliably welded to the peripheral surface of the connecting portion 432 without any gap.

  An ink filling through hole 435 that penetrates the flange portion 431 and the connecting portion 432 is formed inside the ink filling port portion 433. After the ink is filled in the ink bag 402, the ink filling port portion 433 is heat-sealed. (The sealing portion 436 is shown in FIGS. 28 and 29). By sealing the ink filling port portion 433 by heat sealing, the sealing can be performed reliably and easily.

  Further, an ink discharge through hole 437 penetrating the flange portion 431 and the connecting portion 432 is formed inside the ink discharge port portion 434, and an elastic member for sealing the ink discharge through hole 437 is fitted at the tip portion. An opening portion 438 is formed, and a step portion 439 for mounting a cap member holding an elastic member is formed on the outer peripheral surface.

  Then, as shown in FIG. 34, an elastic member 441 is fitted into the tip of the ink discharge port 434 and held by a cap member 442. The elastic member 441 is preferably made of a rubber material such as silicon, fluorine, or butyl. This elastic member 441 is kept sealed when a hollow needle-like supply needle (ink introduction means for introducing ink into the recording apparatus main body) is inserted from the recording apparatus main body side. Thus, it is possible to supply ink to the recording apparatus main body side and to restore and maintain the sealed state when the supply needle is pulled out.

  The cap member 442 includes a cylindrical member 446 having a flange portion 445 that presses the peripheral portion of the elastic member 441. The flange portion 445 has a hole 447 into which a supply needle from the recording apparatus main body side is inserted, and has a cylindrical shape. A plurality of locking pieces 448 bent inward are formed in the portion. By fitting the cap member 442 into the tip of the ink discharge port portion 434, the locking piece 448 is engaged with the step portion 439 of the ink discharge port portion 434 as shown in FIG.

  Here, the ink discharge port portion 434 of the holding member 422 is disposed at a substantially central portion in the height direction of the ink bag 402 as shown in FIG. As a result, when the ink cartridge 38 is used vertically (referring to the state shown in FIG. 1), the ink discharge port portion is unevenly distributed on the one end side, compared with the case where the ink bag 402 has an inside of the bag body 421. As a result, the ink flow becomes smooth and the ink can be used up with certainty.

  Further, the holding member 422 is integrally formed with engaging portions 451 and 452 that engage with locking claws described later provided on the first housing 411 side. And the groove part 431a, 431b is formed in the side surface of the flange part 431 in the part corresponding to these engaging parts 451, 452.

  As described above, the ink bag 402 is formed by fixing the holding member 422 to one side of the substantially square bag body 421 having flexibility, and the holding member 422 is used for filling the bag body 421 with ink. In addition to having an ink filling port portion 433 and an ink discharge port portion 434 for discharging the ink in the bag body, it has engagement portions 451 and 452 for holding the ink bag 402 in a cartridge housing 403. Therefore, there is little remaining use of ink, and it can be stably and easily attached to the housing 403 which is a protective cover.

  Next, another example of the ink bag will be described with reference to FIGS. 35 is an explanatory side view of the ink bag, FIG. 36 is a perspective explanatory view of the ink bag filled with ink, and FIG. 37 is a lower side of FIG. 35 illustrating the ink bag filled with ink. It is explanatory drawing seen from.

  In this ink bag 402, a bag body 421 is provided with a back surface (bottom) 421a made of the aluminum laminate film 430 on the back side of the two aluminum laminate films 430 and 430, and thus the three aluminum laminate films are provided. By using 430, the capacity of the ink bag 402 is increased.

  Next, the configuration of the casing of the ink cartridge 38 will be described with reference to FIGS. 38 and 39. FIG. FIG. 38 is an explanatory side view of the first housing of the ink cartridge, and FIG. 39 is an explanatory side view of the second housing of the ink cartridge.

  The housing 403 of the ink cartridge 38 is assembled into a substantially rectangular parallelepiped shape by fitting the divided first housing 411 and second housing 412 together and fitting the third housing 413 into the lower part of the front surface thereof. In the assembled state, as will be described later, a recessed portion 461 and a hooking portion 462 are formed on the rear surface side so that a finger or the like can be easily attached to be attached to or detached from the device main body. An opening 473 facing the ink discharge port 434 is formed.

  As shown in FIG. 38, the first housing 411 has a substantially rectangular outer shape, and has a recessed portion 461A and a hooking portion 462A obtained by dividing the recessed portion 461 and the hooking portion 462 into substantially half on the outer peripheral portion. A notch portion 463A for forming a space into which the ink filling device can enter in order to perform filling with the ink filling device while the ink bag 402 is held by the first housing 411 and the second housing 412; Guide portions 464 and 465 used for loading into the recording apparatus main body and loading into the ink filling apparatus are integrally formed.

  Engaging portions 466a, 466b, and 466c are formed at the three corners of the inner wall surface of the first housing 411 to engage locking claws of the second housing 412 described later. Further, on the inner wall surface of the first housing 411, positioning portions 467 and 468 for determining the holding position of the holding member 422 are erected and held in order to lock and hold the holding member 422 of the ink bag 402. Locking claws 471 and 472 for locking the engaging protrusions 451 and 452 of the member 422 are provided upright.

  Further, an approximately ¼ arc-shaped portion 473A for forming a part of the opening 473 is formed on the front surface of the first housing 411 (the front surface when loaded into the apparatus main body). In addition, the first housing 411 is formed with an engaging recess 479 that engages with a locking claw of the third housing 413 when the third housing 413 is fitted.

  As shown in FIG. 39, the second housing 412 has an outer shape substantially similar to that of the first housing 411, and has a recessed portion 461B obtained by dividing the recessed portion 461 and the hooking portion 462 into substantially half on the outer peripheral portion. In addition, in order to perform filling by the ink filling device while the ink bag 402 is held by the hook portion 462B, the first housing 411, and the second housing 412, a cut for forming a space into which the ink filling device can enter. It has a notch 463 </ b> B, and an identification means 484 made of a protruding piece for representing the color of the ink filled in the ink bag 402 of the ink cartridge 38.

  Locking claws 486a, 486b, and 486c that engage with and engage with the engaging portions 466a, 466b, and 466c of the first housing 1 are integrally formed at three corners of the inner wall surface of the second housing 412, respectively. is doing. Further, fitting portions 487 and 488 having groove portions into which the holding member 422 of the ink bag 402 is fitted are provided on the inner wall surface of the second housing 412.

  Further, an approximately ¼ arc-shaped portion 473B for forming the opening 473 is formed on the front surface of the second housing 412 (the front surface when loaded into the apparatus main body). In addition, the second housing 412 is formed with an engagement recess 489 that engages with a locking claw of the third housing 413 when the third housing 413 is fitted.

  As shown in FIG. 26, the third housing 413 is formed by cutting the front sides of the ink supply side of the first housing 411 and the second housing 412 in a state where the first housing 411 and the second housing 412 are combined. It fits into the notches 463A and 463B. The third casing 413 is provided with locking claws 491 and 492 that engage with the engaging recesses 479 and 489 of the first casing 411 and the second casing 412, respectively, and also for forming the opening 473. About ½ of the arc-shaped portion 473C.

  Since the ink cartridge 38 is configured as described above, the ink cartridge 38 is pressed while the holding member 422 of the ink bag 402 is pressed by the positioning portions 467 and 468 of the first housing 411 as shown in FIG. Since the locking claws 471 and 472 of the body 411 lock the engagement protrusions 451 and 452 of the holding member 422 of the ink bag 402, the holding member 422 is locked and held by the first housing 411.

  Thereafter, the second housing 412 is overlaid on the first housing 411 and pressed from the outer surface side of the first housing 411 and the second housing 412, thereby engaging portions 466 a to 466 c of the first housing 411. Since the locking claws 486a to 486c of the second housing 412 are hooked and locked, an assembly of the first housing 411 and the second housing 412 (see FIG. 26) is completed.

  Therefore, as shown in FIG. 26, by engaging the third housing 413 with the first housing 411 and the second housing 412, the locking claws 491 and 491 of the third housing 413 are engaged with the first housing 411. In addition, the ink cartridges 38 as shown in FIG. 25 are assembled because they are hooked and locked in the engaging recesses 479 and 489 of the second housing 412.

Next, another different example of the ink cartridge 38 will be described with reference to FIGS.
The ink cartridge 38 shown in FIG. 41 is provided on the first casing 411 and the second casing 412 on the side of the cap member 442 provided at the front end of the ink outlet 434 and / or the ink outlet 434 of the ink bag 402. Notches 469A and 469B are formed on the side, and the third housing 413 is also provided on the side of the cap member 442 provided at the ink discharge port 434 and / or the front end of the ink discharge port 434 of the ink bag 402. A notch 499 is formed on the side.

  That is, as shown in FIG. 42, the needle 511 is inserted into the ink discharge port 434 of the ink cartridge 38 from the recording apparatus main body side and connected to the ink supply system on the apparatus main body side. Is provided with a needle guard 412 for protecting the needle 411. When the thickness of the ink cartridge 38 is reduced, it becomes impossible to secure the entry opening of the needle guard 512 with the opening 473 alone. Therefore, as shown in FIG. 43, a needle guard 512 is provided by providing a cutout portion on the side of the ink discharge port 434 and / or the cap member 442 in the casings 411, 412, and 413 that are the sides of the opening 457. Can enter without touching the housing. In other words, the ink cartridge can be made thinner.

  The ink cartridge 38 shown in FIG. 43 is provided in the first housing 411 and the second housing 412 at the tip of the ink discharge port portion 434 and / or the ink discharge port portion 434 of the ink bag 402 as the ink storage means. Cutout portions 469A and 469B are formed on the side of the cap member 442, and the third housing 413 is not provided with a cutout portion.

  By storing the ink bag 402 in the cartridge housing 403 as described above, the ink cartridge 38 having a thin box-shaped outer shape can be configured. Further, as shown in FIG. Since the ink is replenished and supplied to the sub tank 35 mounted on the carriage 33 via the supply tube 36, the ink cartridge 38 can be taken in and out of the recording apparatus main body by a front operation.

  That is, as a conventional ink cartridge or ink tank for replenishing ink to a sub-tank, as described in, for example, JP-A-10-202900, a flexible bag-like shape provided with an ink outlet is provided. There is an ink tank and a chassis part (casing) having an opening through which the ink tank can be taken in and out, and the ink tank can be taken into and out of the chassis part.

  However, in such a configuration, when the ink cartridge is inserted into the main body of the apparatus from above and loaded with the ink supply port (replenishment port) facing downward, the ink tank is in a stable state within the chassis. When the ink cartridge is inserted into the apparatus main body from the front as in the present invention and the ink discharge port portion is loaded in the lateral direction (horizontal direction), the ink tank is inclined in the chassis. Such a front loading structure cannot be adopted because of the state. On the other hand, the front operation (operation to put in and out from the front side) can be performed by using the ink cartridge as described above.

  Here, in the above embodiment, as shown in FIGS. 2-A, 2-B and 45 described above, the four color ink cartridges 38 are all arranged on the right side on the front side of the recording apparatus main body 1. However, it is not limited to this.

  For example, in an example of four color ink cartridges, as shown in FIG. 46, a color ink ink cartridge 38C is arranged on the right side and a black ink ink cartridge 38B is arranged on the left side, and the ink cartridge 38B that consumes a relatively large amount. Can be a large capacity ink cartridge. Of course, instead of the ink cartridge 38B, an ink cartridge 38C for one color ink may be arranged.

  In addition, as shown in FIG. 47, the four color ink cartridges 38 may be arranged on the left side on the front side of the recording apparatus main body 1. Alternatively, as shown in FIG. 48, one ink cartridge 38 may be disposed on the right side of the front side of the recording apparatus main body 1 and three ink cartridges 38 may be disposed on the left side. Further, as shown in FIG. 49, two ink cartridges 38 may be arranged on the right side and the left side of the front side of the recording apparatus main body 1, respectively. Of course, the number of ink cartridges is not limited to four, and the number of ink cartridges arranged on the left and right sides of the recording apparatus main body may be the same or different.

  In the above-described embodiment, as shown in FIGS. 2A and 2B, the ink cartridge 38 is placed vertically and loaded from the front of the apparatus main body 1 by sliding in. It is not limited. For example, as shown in FIG. 50, it is possible to adopt a front operation configuration in which the ink cartridge 38 is loaded horizontally from the front, and as shown in FIG. 51, the ink cartridge 38 is loaded obliquely from the front. It can also be set as the structure of the front operation to do. The placement of the ink cartridge may be appropriately selected depending on the position and size of the member disposed on the front side of the apparatus main body 1.

  Further, in the above embodiment, as shown in FIGS. 2-A and 2-B, the front cartridge is configured to be loaded by sliding in the ink cartridge 38 from the front surface of the apparatus main body 1. For example, FIG. As shown in FIG. 53, the ink cartridge 38 can be loaded with the slide-in from the side surface of the apparatus main body 1, or the ink cartridge 38 can be loaded with the slide-in from the back of the apparatus main body 1 as shown in FIG. (In these cases, not only vertical installation but also horizontal installation or diagonal installation can be used as described above.)

  In the above-described embodiment, the description has been given of the example in which the paper supply / discharge operation (paper feed tray 2, paper discharge tray 3) and the ink cartridge insertion / removal operation (ink cartridge loading unit 4) are performed by the front operation. Furthermore, as shown in FIG. 54, a connector 611 for connecting a power cord, a power switch 612, and a connector 613 such as a USB connector for connecting to an external device are also arranged on the front surface 12 of the apparatus body 1, By making full front operation possible, operability is further improved.

  In the above embodiment, the present invention has been described with reference to an example in which the present invention is applied to a serial (shuttle type) ink jet recording apparatus that is scanned by a carriage. However, the present invention is similarly applied to a line type ink jet recording apparatus having a line type head. be able to.

  The image recording apparatus according to the present invention can be applied to a facsimile apparatus, a copying apparatus, a printer / fax / copier multifunction machine, etc., in addition to an ink jet printer. Furthermore, the present invention can also be applied to an image recording apparatus that discharges a liquid (recording liquid) other than ink, for example, a resist or a DNA sample in the medical field.

FIG. 3 is an explanatory perspective view seen from the front side of the ink jet recording apparatus as the image forming apparatus according to the present invention including the paper discharge tray according to the present invention. FIG. 3 is a perspective explanatory view showing a state where an ink cartridge loading unit cover of the recording apparatus is opened. FIG. 5 is a perspective explanatory view for explaining the insertion and removal of the ink cartridge. FIG. 3 is a perspective explanatory view viewed from the rear side of the recording apparatus. It is side surface explanatory drawing of the recording device. FIG. 4 is an explanatory diagram for explaining a usage pattern of the recording apparatus. FIG. 11 is an explanatory diagram for explaining another usage pattern of the recording apparatus. It is a perspective explanatory view explaining another example of the upper surface of the same recording apparatus. FIG. 10 is a perspective explanatory view illustrating still another example of the upper surface of the recording apparatus. FIG. 10 is a perspective explanatory view for explaining still another example of the upper surface of the same recording apparatus. FIG. 2 is a configuration diagram illustrating an outline of a mechanism unit of the recording apparatus. It is a schematic plane explanatory drawing of the mechanism part. It is a principal part schematic perspective explanatory drawing of the mechanism part. 3 is a schematic explanatory diagram for explaining a relationship between a paper discharge tray and a paper feed tray of the recording apparatus. FIG. FIG. 6 is an explanatory diagram of a state before the paper feeding tray of the recording apparatus is pushed. FIG. 6 is an explanatory diagram of a state after the same paper feed tray is pushed into the apparatus main body. FIG. 6 is an explanatory side view of a main part for explaining a paper feed tray release mechanism. Similarly it is principal part plane explanatory drawing. FIG. 6 is an explanatory view for explaining the engagement between the sheet feeding tray and the apparatus main body. FIG. 6 is a schematic explanatory diagram when paper is similarly supplied to a paper feed tray. FIG. 6 is a perspective view illustrating a main part when paper is supplied to the paper feed tray. FIG. 3 is a perspective view of a main part for explaining a paper discharge tray of the recording apparatus. It is explanatory drawing from the back side of the paper discharge tray. FIG. 5 is an explanatory diagram of a main part before the double-sided paper feeding unit is attached to the apparatus main body. FIG. 5 is an explanatory diagram of a main part after the double-sided paper feeding unit is attached to the apparatus main body. FIG. 6 is a perspective explanatory view on the back side for explaining a conveyance cover of the recording apparatus. It is typical sectional explanatory drawing of the conveyance cover. FIG. 3 is an external perspective view illustrating an example of an ink cartridge. FIG. 6 is a schematic perspective explanatory view of the ink cartridge with a third housing removed. FIG. 3 is a front cross-sectional explanatory view viewed from the front side of the ink cartridge. It is side surface explanatory drawing of the ink bag which concerns on this invention. It is explanatory drawing which looked at FIG. 28 explaining the state with which the ink bag was filled with the ink from the lower side. It is sectional explanatory drawing of the aluminum laminate film which comprises the bag main body of the ink bag. It is side surface explanatory drawing of the holding member of the ink bag. It is explanatory drawing which looked at the holding member of FIG. 31 from the back side. It is explanatory drawing which looked at the holding member of FIG. 31 from the front side. It is principal part sectional drawing of the ink discharge port part of the same ink bag. FIG. 10 is an explanatory side view illustrating another example of an ink bag accommodated in an ink cartridge. It is a perspective explanatory view of the state where the ink bag was filled with ink. It is explanatory drawing which looked at FIG. 35 explaining the state with which the ink bag was filled with the ink from the lower side. FIG. 4 is an explanatory side view of a first housing of the ink cartridge. It is side surface explanatory drawing of the 2nd housing | casing of the ink cartridge. FIG. 4 is a side view of a state where the ink bag is locked and held in the first housing of the ink cartridge. It is an external appearance perspective explanatory drawing of the other example of an ink cartridge. FIG. 4 is an explanatory side view for explaining the connection between the cartridge and the recording apparatus main body. It is front explanatory drawing similarly. FIG. 10 is an external perspective view illustrating still another example of the ink cartridge. FIG. 3 is an explanatory diagram for explaining an arrangement of an ink cartridge of the recording apparatus. FIG. 10 is an explanatory diagram for explaining another arrangement of the ink cartridge on the front surface of the apparatus main body. FIG. 10 is an explanatory diagram for explaining another arrangement of the ink cartridge on the front surface of the apparatus main body. FIG. 10 is an explanatory diagram for explaining another arrangement of the ink cartridge on the front surface of the apparatus main body. FIG. 10 is an explanatory diagram for explaining another arrangement of the ink cartridge on the front surface of the apparatus main body. FIG. 6 is an explanatory diagram for explaining another method of placing an ink cartridge on the front surface of the apparatus main body. FIG. 6 is an explanatory diagram for explaining another method of placing an ink cartridge on the front surface of the apparatus main body. 4 is a perspective explanatory view illustrating an example in which an ink cartridge is taken in and out from a side surface of the apparatus main body. FIG. FIG. 5 is a perspective explanatory view illustrating an example in which an ink cartridge is taken in and out from the back of the apparatus main body. FIG. 10 is a perspective explanatory view for explaining another configuration of the front surface of the apparatus main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Paper feed tray 3 ... Paper discharge tray 4 ... Ink cartridge loading part 5 ... Operation part 10 ... Upper cover 11 ... Upper surface 12 ... Front surface 21 ... Step 33 ... Carriage 34 ... Recording head 35 ... Sub tank 36 ... Ink Supply tube 38 ... Ink cartridge 42 ... Paper 51 ... Conveying belt 111 ... Conveying cover

Claims (7)

  In an image forming apparatus including a paper feed tray for supplying paper and a paper discharge tray for discharging paper on which an image has been formed, the paper discharge tray can be rotated in the vertical direction, and the discharge tray can be rotated. An image forming apparatus, comprising: a mechanism for releasing a sheet feeding pressure applied to a sheet loaded in the sheet feeding tray when the sheet tray is rotated.   In an image forming apparatus including a paper feed tray for supplying paper and a paper discharge tray for discharging paper on which an image has been formed, the paper discharge tray can be rotated in the vertical direction, and the discharge tray can be rotated. An image forming apparatus, wherein the paper feed tray moves in a direction opposite to a paper feed direction when the paper tray is rotated.   3. The image forming apparatus according to claim 1, wherein the paper discharge tray also serves as an upper lid of the paper feed tray. 4. 4. The image forming apparatus according to claim 3, wherein an opening of the paper feed tray is defined by a rotation amount of the paper discharge tray and a pullable amount of the paper feed tray.   5. The image forming apparatus according to claim 3, wherein the paper feed tray has an opening on a front surface side, and an end fence that blocks the opening. 5.   6. The image forming apparatus according to claim 1, wherein the discharge tray has an inclined surface that becomes higher in a downstream direction in a discharge direction.   7. The image forming apparatus according to claim 1, wherein both ends of the paper discharge tray in a direction perpendicular to the paper discharge direction are formed lower than a central portion.

Images