Abstract:
A stacker on which a recording medium discharged from an outlet of a recoding apparatus is placed, is movable between a first position for closing the outlet and a second position for opening the outlet. A sheet receiving face receives the discharged recording medium, while being a first form when the stacker is placed in the first position, and being a second form when the stacker is placed in the second position. The sheet receiving face is formed with at least one aperture in an upstream end portion with regard to a sheet discharging direction. A holder supports the upstream end portion of the sheet receiving face. The holder includes at least one retainer engaged with the aperture so as to prevent the sheet receiving face from deforming upward.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    The present invention relates to a discharged sheet stacker adaptable for use with a recording apparatus, such as a printer or a copying machine, and relates to a recording apparatus provided with the discharged sheet stacker.  
           [0002]    An example of a related discharged sheet stacker in use for a recording apparatus, such as a printer or a copying machine, is constructed as follows. A pivotable member made of a rigid material is turned to be horizontal to be used as the discharged sheet stacker. When not used, it is turned to be vertical to close the front face of the printer body. For another example, it is constructed a discharged sheet stacker includes an extension stacker which may be drawn out of the turn member in accordance with a size of a sheet of paper. When the extension stacker is thus drawn out, it receives the sheet of a large size.  
           [0003]    A related printer is shown in FIG. 19. A sheet supply tray  201  made of a hard material is removably attached to the rear side of a printer body  200  whose external configuration is almost cuboid. A discharged sheet stacker  203  made of a hard material is removably attached to the front side of the printer body, while being extensible to the front.  
           [0004]    In recent years, it is required that the product with stylish design which matches a life style of the user. Thus, in recent product development, one of the subjects assigned to the product manufacturer is not only to improve the functional aspect but also to improve the design stylishness which satisfies user&#39;s needs. For this reason, it is required to develop a variety of products designed on the basis of one product concept “soft impression”.  
           [0005]    Where the discharged sheet stacker made of the rigid material or hard material is used, a design freedom is frequently restricted in designing products based on the “soft impression” concept. In a printer of such a type that the discharged sheet stacker is closed in the housing, if the form of the discharged sheet stacker made of the rigid material is determined, then the form of the housing itself must be restrictively determined in accordance with the form of the discharged sheet stacker.  
           [0006]    The discharged sheet stacker includes a sheet receiving face which is bendable, wherein when the stacker is used, the sheet receiving face is substantially horizontal for receiving sheets of paper, and when the stacker is closed in its place, the sheet receiving face may be deformed along the outer configuration of the housing.  
           [0007]    A standby position of a carriage with an ink cartridge mounted thereon is located in one of the right and left end portions of the printer. Accordingly, the center line of the housing is not coincident with the center line of the opening through which the sheets are discharged. For this reason, when the discharged sheet stacker is closed in a state that it is deformed along the configuration of the housing, the stacker deformed is asymmetrical with respect to its center line. As a result, when the discharged sheet stacker is used, the stacker has had the tendency to deform, and hence one of the sides of the stacker is raised.  
         SUMMARY OF THE PREFERRED EMBODIMENTS  
         [0008]    It is therefore a first object of the present invention is to provide a discharged sheet stacker having such a structure that in designing the product based on the concept of “soft impression”, a design freedom is increased regardless of the discharged sheet stacker made of the rigid material, which the stacker is compact when it is closed, and protects the sheet discharge section against dust, and to provide a recording apparatus with such a discharged sheet stacker.  
           [0009]    A second object of the present invention is to provide a discharged sheet stacker which functions such that even when the deformable discharged sheet stacker has had the tendency to deform, its tendency to deform is removed and its original configuration is resumed when it is used, and a recording apparatus with such a discharged sheet stacker.  
           [0010]    In order to achieve the above objects, according to the present invention, there is provided a stacker on which a recording medium discharged from an outlet of a recoding apparatus is placed, which is movable between a first position for closing the outlet and a second position for opening the outlet, the stacker comprising a sheet receiving face, that receives the discharged recording medium, being a first form when the stacker is placed in the first position, and being a second form when the stacker is placed in the second position.  
           [0011]    In this configuration, there increased a degree of freedom of the combinations of the discharged sheet stacker and the external configurations of the recording apparatus. As a result, it is easy to develop the products based on a product concept, regardless of the configuration of the discharged sheet stacker.  
           [0012]    Preferably, the sheet receiving face is made of a material having flexibility. In this case, the sheet receiving face is relatively freely deformed to have a predetermined configuration when the stacker is placed in the first position. As a result, a compact stacker closed state is realized.  
           [0013]    Preferably, the second form of the sheet receiving sheet is substantially flat. In this case the discharged recording medium is supported on the sheet receiving face without any deformation.  
           [0014]    Preferably, a center portion of the sheet receiving face is bent downward from both side portions thereof with regard to a widthwise direction of the sheet. When the recording media are stacked on the discharged sheet stacker, a load acting on the discharged sheet stacker increases. However, in this configuration, the bending of the discharged sheet stacker in the sheet discharging direction due to the load can be almost eliminated. A degree of the bending varies depending on a material and size of the sheet receiving face, and hence it cannot be uniquely determined.  
           [0015]    Here, it is preferable that the whole part of the stacker forming the sheet receiving face is bent. In this case, the bending state of the stacker can be realized without using another auxiliary member. In this respect, this embodiment is economical.  
           [0016]    Also, it is preferable that the stacker further comprises a holder, that supports an upstream end portion of the sheet receiving face with regard to a sheet discharging direction, the holder provided with a support face which is convex downward. The center portion of the sheet receiving face is bent along the support face of the holder.  
           [0017]    In this configuration, the upstream portion of the sheet receiving face is forcibly bent downward, its bending state is extended to a downstream portion of the sheet receiving face, thereby preventing the discharged sheet stacker from being bent over its entire length of the sheet receiving face as viewed in the sheet discharging direction. Further, since there is no need of additionally providing a member for retaining the bending state, the sheet receiving face can be bent a simple structure and economically.  
           [0018]    Here, it is preferable that the center portion of the sheet receiving face is urged against the support face. In this case, the sheet receiving face is uniformly bent in the width direction by merely urging the central part of the upstream portion of the sheet receiving face against the support face. Further, the bending state of the sheet receiving face can be readily realized.  
           [0019]    Alternatively, the stacker further comprises flatness retainers, that retain flatness of the sheet receiving face when the stacker is placed in the second position, the flatness retainers being provided on both side end portions of the sheet receiving face with regard to a widthwise direction of the sheet.  
           [0020]    In this configuration, it is easy to remove the deforming tendency of the stacker which was bent when the stacker is closed. Additionally, it further lessens the bending of the stacker by the weight of media stacked on the stacker.  
           [0021]    Here, it is preferable that both side end portions of the stacker forming the sheet receiving face are bent in a direction perpendicular to the sheet receiving face to realize the flatness retainers. In this configuration, the flatness retainer also serves as a guide for both side ends of the discharged recording medium. When the stacker is moved from the first position to the second position, it may be ready for use easily and quickly by merely bending the flatness retainers.  
           [0022]    Preferably, the sheet receiving face is so deformed as to be along with an outer peripheral shape of a housing of the recording apparatus, when the stacker is placed in the first position. In this case, the outer configuration of the housing may variously be changed in design. The stacker may be designed in good harmony with the whole recording apparatus when it is closed.  
           [0023]    Here, it is preferable that the outer peripheral shape of the housing is curved face. In this case, it is possible to provide a recording apparatus having “soft impression”, and the products satisfying recent user&#39;s needs.  
           [0024]    Also, it is preferable that the sheet receiving face is provided with a non-opaque part. In this case, the user can visually recognize a design of the housing through the stacker, even in the closed position, if the sheet receiving face is colored and translucent, the sheet receiving face itself produces a design effect. When the sheet receiving face is combined with a color of the housing, another color is produced. When it is harmonized with the design of the housing, the resultant product may be used as an interior article in an office or home. When the sheet receiving faces having a variety of colors are provided, the user may select a recording apparatus having the color well matching the color of the room. This will yield additional market needs.  
           [0025]    Preferably, the sheet receiving face covers at least the outlet when the stacker is placed in the first position. In this case, the stacker may cover the inlet, the outlet or the like, which are formed in the housing, thereby preventing foreign matter from entering those openings when the discharged sheet stacker is no in use. Further, since the outlet and the like are kept from sight, the design value of the whole recording apparatus is improved.  
           [0026]    Preferably, the stacker further comprises a holder, that supports an upstream end portion of the sheet receiving face with regard to a sheet discharging direction. The sheet receiving face is formed with at least one aperture in the upstream end portion. The holder includes at least one retainer engaged with the aperture so as to prevent the sheet receiving face from deforming upward.  
           [0027]    In this configuration, the deforming tendency of the stacker is forcibly removed, thereby maintaining a predetermined configuration of the sheet receiving face.  
           [0028]    Here, it is preferable that the retainer is integrally formed with the holder. In this case, when the holder is formed, the retainer may also be formed concurrently.  
           [0029]    Also, it is preferable that a plurality of apertures are arranged symmetrically with respect to a widthwise center line of the stacker. In this case, the deformation of the stacker may be uniformly lessened on both sides of the center line on the stacker as viewed in the width direction. Therefore, it is possible to maintain a configuration of the sheet receiving face closest to a predetermined one.  
           [0030]    Still also, it is preferable that the sheet receiving face is so deformed as to be along with an outer peripheral shape of a housing of the recording apparatus, when the stacker is placed in the first position. Here, it is preferable that the outer peripheral shape of the housing is curved face. Further, it is preferable that a widthwise center line of the stacker is offset from a widthwise center line of the housing so that the sheet receiving face is asymmetrically deformed when the stacker is placed in the first position.  
           [0031]    When the stacker is deformed along the outer configuration of the housing, an asymmetric tendency to deform is created in the stacker. However, such a deforming tendency may be corrected through the action of the retainers. Therefore, a design of the recording apparatus can be altered as desired, regardless of the outer configuration of the housing and the positional relationship of the housing to the stacker.  
           [0032]    According to the present invention, there is also provided a stacker on which a recording medium discharged from an outlet of a recoding apparatus is placed, which is movable between a first position for closing the outlet and a second position for opening the outlet, the stacker comprising:  
           [0033]    a sheet receiving face, that receives the discharged recording medium, made of a material having flexibility, and formed with at least one aperture in an upstream end portion with regard to a sheet discharging direction, and  
           [0034]    a holder, that supports the upstream end portion of the sheet receiving face, the holder including at least one retainer engaged with the aperture so as to prevent the sheet receiving face from deforming upward.  
           [0035]    In this configuration, since the deforming tendency of the stacker is forcibly removed, a predetermined configuration of the sheet receiving face can be maintained.  
           [0036]    According to the present invention, there is also provided a recording apparatus comprising the above stacker. In this case, the recorded medium may smoothly be received on the stacker. There is no chance that the discharged medium is jammed at the outlet. Further, there is eliminated troublesome work of rearranging the medium on the stacker. Further, there succeeds in providing a recording apparatus of soft impression which well matches user&#39;s life style. Since a design freedom is increased, another type of recording apparatus which is capable of satisfying user&#39;s needs may readily be provided to the market.  
           [0037]    According to the present invention, there is also provided a recording apparatus comprising:  
           [0038]    a main body, including an inlet from which a recording medium is inserted, and an outlet from which the recording medium is discharged; and  
           [0039]    a stacker, made of a material having flexibility, which envelops at least the outlet of the main body at a first position and which guides the discharged recording medium at a second position.  
           [0040]    In this configuration there is no case that dust enters the printer inside through the outlet.  
           [0041]    Preferably, the stacker is detachably coupled to the main body. In this case, it is easy to replace the stacker with another stacker.  
           [0042]    Preferably, the stacker is provided with a display on a face which is the other side of the face on which the discharged recording medium is placed In this case, the house mark and the effective usage of the printer, and a user friendly display, such as impressive print patterns may appear when the stacker is not used. Therefore, the utility value of the tray and the product value of the printer as well are increased.  
           [0043]    Preferably, the main body has a shape so rounded as to protrude in a height direction and a depth direction thereof. In this case, it is roundish as a whole, and it gives the user soft impression.  
           [0044]    Preferably, both side faces of the main body are broadened toward the bottom. Each side face of the main body is formed with an incurved portion. In this case, its stability is improved, and it is easily carried.  
           [0045]    Preferably, the recording apparatus further comprises a tray, made of a material having flexibility, which covers at least the inlet of the main body at a first position and which guides the recording medium to be inserted into the inlet at a second position. In this case, there is no case that dust enters the printer inside through the inlet.  
           [0046]    Here, it is preferable that the tray overlaps with the stacker placed in the first position when the tray is placed in the first position. In this case, the dust protecting effect can be further enhanced. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0047]    In the accompanying drawings:  
         [0048]    [0048]FIG. 1 is a perspective view of a discharged sheet stacker according to a first embodiment of the invention, showing an opened state, inclusive of partial enlarged views;  
         [0049]    [0049]FIG. 2 is a perspective view of the discharged sheet stacker, showing a closed state;  
         [0050]    [0050]FIG. 3 is a exploded perspective view of the discharged sheet stacker and a holder;  
         [0051]    [0051]FIG. 4A is a side view showing the discharged sheet stacker and the holder;  
         [0052]    [0052]FIG. 4B is a partial section view of FIG. 4A;  
         [0053]    [0053]FIG. 5 is a rear elevation, partly broken, showing a discharged sheet stacker, inclusive of an enlarged view;  
         [0054]    [0054]FIG. 6 is a plan view of a discharged sheet stacker according to a second embodiment of the invention;  
         [0055]    [0055]FIG. 7 is a plan view of a holder for the discharged sheet stacker shown in FIG. 6;  
         [0056]    [0056]FIGS. 8A and 9A are enlarged plan views showing retainers provided with the holder shown in FIG. 7;  
         [0057]    [0057]FIGS. 8B and 9B are enlarged section views showing the retainers;  
         [0058]    [0058]FIG. 10 is an exploded perspective view of the discharged sheet stacker and the holder of the second embodiment;  
         [0059]    [0059]FIG. 11 is an exploded perspective view of the discharged sheet stacker and the holder according to a third embodiment of the invention;  
         [0060]    [0060]FIG. 12 is an illustration showing a state that a housing center is not coincident with the center of the discharged sheet stacker;  
         [0061]    [0061]FIG. 13 is an illustration showing the discharged sheet stacker having the tendency to deform;  
         [0062]    [0062]FIG. 14 is a perspective view showing a recording apparatus according to a fourth embodiment of the invention;  
         [0063]    [0063]FIG. 15 is a front view of the recording apparatus shown in FIG. 14;  
         [0064]    [0064]FIG. 16 is a side view of the recording apparatus shown in FIG. 14;  
         [0065]    [0065]FIG. 17 is a top plan view of the recording apparatus shown in FIG. 14;  
         [0066]    [0066]FIG. 18 is a cross sectional view taken along line X-X in FIG. 17; and  
         [0067]    [0067]FIG. 19 is a perspective view showing a related recording apparatus. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0068]    Preferred embodiments of the present invention will be described with reference to the accompanying drawings.  
         [0069]    [0069]FIG. 1 shows a printer  1 , which is one of a recording apparatus, provided with a discharged sheet stacker according to a first embodiment.  
         [0070]    The printer  1  includes a dome-like housing  3  the whole of which is extended in the widthwise direction. A sheet supply section  5  is provided on the rear side of the housing  3 . A sheet discharge section  7  having a stacker  6  is provided on the front side of the same. A window  9  is formed ranging from the upper part of the housing  3  to the front thereof. The window  9  is closed with a transparent, curved plastic cover  11  in an openable state. The dome-like printer  1  being extended in the widthwise direction has not existed since difficulty is present in designing the form and structure of the printer when the putting back of the discharged sheet stacker is taken into consideration.  
         [0071]    The sheet discharge section  7  includes an outlet  13 . As enlargedly illustrated in FIG. 1, a receptacle hole  15  and a guide groove  17  arcuately formed around the receptacle hole  15  are formed at each of both ends of the outlet  13  as viewed horizontally.  
         [0072]    A holder  19  is mounted on the outlet  13  in a state that it may be turned in the vertical direction. As shown in FIG. 3 and enlargedly shown in FIG. 1, the holder  19  consists of a lower holder  21  and an upper holder  23 . Two upstanding pieces  25  (best illustrated in FIG. 5) are provided in the central portion of the lower holder  21 . Two projections, a shaft projection  27  and a guide projection  29 , are provided at both ends of the lower holder  21 . The shaft projections  27  are respectively inserted into the receptacle holes  15 , and in this state those projections serve as a shaft about which the holder  19  is turned. The guide projections  29  are received by the arcuate guide holes  17 , respectively, and guide the turning of the holder  19 .  
         [0073]    The lower holder  21  is extended to the sheet discharge direction, to thereby form an extended supporter  31 . The lower holder  21  including the extended supporter  31  is somewhat bent downward as a whole, whereby a concave portion  33  is formed. Functional operations of the extended supporter  31  and the concave portion  33  will be described later.  
         [0074]    As shown in FIGS. 4A and 4B, the stacker  6  is supported between the upper holder  23  and the lower holder  21 . The stacker  6  is formed by bending a flexible plastic sheet  35 . The upper face of the plastic sheet  35  serves as a sheet receiving face  37  on which sheets discharged from the outlet  13  are stacked one upon the other. Upstanding parts of the plastic sheet  35  which are made by forming cutouts  41 , supported pieces  39  are formed at positions corresponding to the upstanding pieces  25  on the base side (the upstream side thereof as viewed in the sheet discharging direction) of the stacker  6 .  
         [0075]    As shown in FIG. 3, the cutouts  41  receive the two upstanding pieces  25  of the lower holder  21 , respectively. The supported pieces  39  are placed in the two upstanding pieces  25  in a fitting fashion, whereby the stacker  6  is positioned. In this state, the upper holder  23  is combined with the lower holder  21 , and the stacker  6  is supported by the holder  19 .  
         [0076]    When as shown in FIG. 4B, the supported pieces  39  of the stacker  6  are positioned between the upstanding pieces  25 , the upper part of the supported piece  39  is located somewhat above the upper part of the upstanding pieces  25 . When in this state, the upper holder  23  is coupled to the lower holder  21 , the lower side of the upper holder  23 , as shown in FIG. 5, pushes downward the protruded parts of the supported pieces  39 , thereby to forcibly deform the stacker  6  along a configuration of the concave portion  33 .  
         [0077]    Thus, by forcibly bending the base end of the plastic sheet  35  forming the stacker  6 , the center of the sheet receiving face  37  as viewed in the sheet width direction is somewhat bent downward from both sides of the sheet receiving face, while extending in the sheet discharging direction. Accordingly, even if a plurality of sheets are placed on the stacker  6 , it is hardly bent downward and in the sheet discharging direction. The wording “somewhat bending” means  2  state that the stacker is hardly deformed, by its bending, out of its perfect flat shape when it is put under a load of the sheets placed thereon, while keeping a basic flat shape of the stacker. In other words, the “somewhat bending” means a bending of the stacker which is approximate to “flatness”. A degree of the bending varies depending on a material and size of the sheet receiving face, and hence it cannot be uniquely determined.  
         [0078]    Bending portions  43  serving as a flatness retainer are provided on both ends of the sheet receiving face  37  as viewed in the sheet width direction. In the illustrated instance, the bending portions  43  are formed by bending the plastic sheet  35  upward, if required, it may be formed by bending the plastic sheet downward, obliquely upward or downward, or curling the plastic sheet. The bending portions  43  are bent only when the stacker  6  is used. When the stacker  6  is closed, it may be flush with the sheet receiving face  37 .  
         [0079]    Since the bending portions  43  are bent when the discharged sheet stacker is used, the following advantages are produced. A tendency to curve the sheet receiving face  37  which has curved in putting back the stacker is easy to be removed, and the flat face of the stacker on which the sheets are placed is formed and retained. There is substantially completely eliminated the bending of the stacker  6  in the sheet discharging direction by the weight of the stacked sheets when sheets are stacked on the stacker  6 . Additionally, both ends of the plastic sheet  35  are naturally bent when the stacker  6  being in a closed state is put to an opened state. Accordingly, the stacker  6  may be readily and quickly set to the opened state.  
         [0080]    While the flatness retainer takes the form of the bending portions  43  in the embodiment, it may be realized such that long and narrow members of good rigidity are attached to both ends of the plastic sheet  35  when the stacker is used.  
         [0081]    Engagement holes  45  are formed on both side ends of the front end of the stacker  6 . When the stacker  6  is closed, the engagement holes  45  are respectively engaged with projections  47  which are provided on both ends of the upper face of the housing  3 , whereby the stacker is immovably put in its place.  
         [0082]    As shown in FIG. 3, each of the engagement holes  45  consists of two large and small holes that partly overlap with each other. Each of the projections  47  includes a neck portion  46  located at its lower part. Each projection  47  is first inserted through the associated large-hole part of engagement hole  45 . The stacker  6  is somewhat naturally deformed by its restoring force to its original form, and each small-hole part fits with the neck portion  46  of the projection  47 . The engagement holes  45  do not come out of the projections  47  in a natural state.  
         [0083]    The plastic sheet  35  of the stacker  6  is colored and translucent. Accordingly, when the stacker  6  is closed, one can see the housing  3  through the plastic sheet  35 . A color of the plastic sheet  35  may be selected appropriately. The plastic sheet may be transparent, translucent or opaque. A color and pattern of the plastic sheet may appropriately be selected in consideration of a harmonization of the color and pattern of the plastic sheet  35  with those of the housing  3 .  
         [0084]    The opened state and the closed state of the stacker  6 , and the configuration-retaining structure when the discharged sheet stacker is in use will be described. FIG. 1 shows a state of the stacker  6  not having the tendency to deform when it is used. In FIG. 1, a state of the stacker  6  when it is closed is also illustrated by use of a phantom line for ease of explanation. As shown in FIG. 1, when the stacker is in use, the sheet receiving face  37  is substantially flat. Although not clearly shown in FIG. 1, the base end of the sheet receiving face  37 , as shown in FIG. 5, is pressed against the concave portion  33 , so that the central portion of the sheet receiving face  37  is somewhat bent downward. Both sides of the stacker  6  are bent upward, whereby a rigidity of the stacker  6  is increased in the sheet discharging direction.  
         [0085]    When in this state, printed sheets are successively discharged from the outlet  13 , those sheets are progressively stacked on the stacker  6 . At this time, the weight of the stacked sheets acts on the stacker  6 . However, the stacker  6  supports the stacked sheets while not bent in the middle of its extension to the sheet discharging direction since the central portion of the sheet receiving face  37  is somewhat bent downward and the bending portions  43  at both sides of the sheet receiving face are bent upward. Also with provision of the extended supporter  31  on the lower holder  21 , the bending of the stacker  6  is suppressed.  
         [0086]    [0086]FIG. 2 shows a state of the stacker  6  when it is closed. in FIG. 2, a state of the stacker  6  when it is in use is also illustrated by using a phantom line. As shown in FIG. 2, to closed the stacker  6  in its place, the bending of the bending portions  43  of both sides of the stacker  6  is removed (viz., the whole of the discharged sheet stacker is flat), the holder  19  is turned upward, and the stacker  6  is pressed against the housing  3  to be curved along the curved face of the housing  3 . By putting, in this state, the engagement holes  45  of the stacker  6  into engagement with the neck portions  46  in the lower parts of the projections  47 , the stacker  6  is placed to a closed state, while the stacker  6  is curved along the curved face of the housing  3 .  
         [0087]    Thus, in the present invention, the form of the stacker  6  when it is in a opened state is different from that when it is in a closed state. Accordingly, the form of the discharged sheet stacker less affects the design of fashioning the housing  3 , whereas the former greatly affects the latter in the related stacker. In this respect, a high design freedom is secured in designing products.  
         [0088]    The sheet receiving face  37  is deformable along the form of the housing  3  when it is closed in its place. Accordingly, it covers the outlet  13  and other portions, which are formed in the housing  3 . With the coverage by it, no foreign matters enter the printer inside through the outlet  13 .  
         [0089]    Next, a recording apparatus according to a second embodiment will be described with reference to FIGS. 6 through 10. In this embodiment, there is provided a structure to retaining a configuration of a discharged sheet stacker. Same reference numerals are assigned to members identical with the first embodiment, and detailed explanations will be omitted.  
         [0090]    As shown in FIG. 6, three apertures  49 ,  50 , are formed in the region of the base end of the discharged sheet stacker  6 . The aperture  49  lies on a center line M 1  of the stacker  6  as viewed in the width direction. The remaining two apertures  50  are formed at positions which are symmetrical with respect to the center line Ml of the stacker  6  as viewed in the width direction, viz., positions located just inside the bending portions  43 . Each of the apertures  49 ,  50  includes a straight side  51 , which is formed at its position located on the front end side of the stacker  6 , and the base end of the aperture is arcuately configured.  
         [0091]    On the other hand, as shown in FIG. 7, retainers  53  are formed, while being integral with the holder  19 , near the front end of the holder  19  at positions corresponding to the apertures  49 ,  50 . Each of the retainers  53 , as enlargedly illustrated in FIGS. 8A, 8B,  9 A and  9 B, includes a protruded part  55  and a retaining piece  57  that is extended from the protruded part  55  forward (to the downstream side as viewed in the sheet forwarding direction). A slit  59 , which may receive the straight side  51 , is formed in the lower part of the retaining piece  57 . Each retainer  53  has a smooth oblique face which is slanted toward the upstream side in the sheet forwarding direction. A sheet of paper moves on and along the smooth oblique face of the retainers  53 , and may move over retainers  53 .  
         [0092]    It is preferable that the apertures  49 ,  50 , and the retainers  53  provided in association with those holes are provided symmetrically with respect to the center line M 1  of the stacker  6  as viewed in the width direction. In this case, the number and the locations of those holes and the retainers are not limited in particular. If the retainers  53  are provided on the front end of the holder  19  and at locations closer to both ends of the holder  19 , the deformation of the stacker  6  having the tendency to deform will effectively be corrected.  
         [0093]    In the embodiment shown in FIGS. 7 through 10, the retainers  53  are integral with the holder  19 . In a recording apparatus according to a third embodiment of the invention, the retainers  53  and the holder  19  may be formed separated from each other, as shown in FIG. 11. In this case, when the stacker  6  has the tendency to deform, the retainers  53  are bonded to the holder  19  by adhesive or the like.  
         [0094]    Regarding the second and third embodiments, the structure which retains the form of the discharged sheet stacker when the stacker is in use will be described. The flexible stacker  6  is deformable along the shape of the housing  3 . Accordingly, when the stacker  6  is opened for its use, sometimes the stacker has had the tendency to deform. As shown in FIG. 12, a standby position (not shown) of a carriage with an ink cartridge mounted thereon is located in a right portion within the housing  3 . Because of this, the center line M 2  of the housing  3  is not coincident with the center line Ml (coincident with the center line of the outlet  13  through which the sheet of paper is discharge) of the stacker  6  as viewed in the width direction. Accordingly, when the stacker  6  is closed while being deformed along the configuration of the housing  3 , the stacker  6  deformed is asymmetrical with respect to its center line. Accordingly, it is closed in a state that it is deformed to be asymmetrical with respect to its center.  
         [0095]    After the discharged sheet stacker is left deformed for a long time, when the stacker  6  is opened for its use, the stacker  6  has had the tendency to asymmetrically deform, and hence the right or left side of the stacker  6  is raised as shown in FIG. 13.  
         [0096]    Even in such a case, since the straight sides  51  of the apertures  49  and  50  are inserted in the slits  59  of the retainers  53  as shown in FIGS.  7  to  10 , the portion of the stacker  6  which tends to rise is put within the slit  59 , and hence prevented from being deformed upward. Accordingly, the stacker is forcibly restored to its original configuration as shown in FIG. 1.  
         [0097]    Next, a recording apparatus according to a fourth embodiment of the invention will be described with reference to FIGS.  14  to  18 . An overall configuration of an ink jet printer  100 , which is one example of the recording apparatus, is shown in FIG. 14. The printer  100  contains therein mechanisms for supplying sheets of paper, printing thereon, and discharging the sheets after the printing. An external appearance of the printer  100  is configured like a stuffed toy animal, or the deformed head of an animal (e.g., hippopotamus) or an insect (e.g., dragonfly).  
         [0098]    Specifically, a discharged sheet stacker  130 , which is shaped like an ear or a wing of an animal, is detachably attached to an attractive, rounded, dumpy shape of main body  110  such that the stacker may be raised and opened, and closed in its place. In use, a recording sheet is supplied from a sheet supply tray  120  located on the rear side (in the direction of an arrow F), and the printed recording sheet is discharged onto the stacker  130  (in the direction of an arrow B) as if an animal sticks out its tongue. When the printer is not in use, the tray  120  and the stacker  130  are placed enveloping the outer face of the main body  110  with them as if a mother bird holds her baby bird in her wings for protecting the baby bird against the enemy.  
         [0099]    When the printer thus constructed and fashioned is placed in an office, it is friendly to users. It attracts the interest of the persons of lower age in particular. Accordingly, it has the added value and it is increased in customer attraction.  
         [0100]    As shown in FIGS.  15  to  17 , the main body  110  is semicylindrical such that it is elongated in the longitudinal direction and its central part is somewhat higher than the remaining part. Both side faces  112  are expanded in the longitudinal direction and broaden toward the bottom. Accordingly, it is stably placed without any danger of its overturn.  
         [0101]    Gently incurved portions  113  are formed in the side faces  112 , respectively. In carrying the printer, if the user puts his fingers to those incurved portions  113 , he can carry the printer easily and without slipping off the printer.  
         [0102]    The stacker  130  is made of a flexible material, e.g., translucent plastic, and shaped like a plate. The tray  120 , as shown in FIG. 16, is detachably attached to an insertion groove  114  of a sheet inlet  118  of the main body  110 . The stacker  130  is removably attached to fixers  115 , such as front hooks of the main body  110 . When the printer  100  is used, the tray  120  is raised in the direction of an arrow D as indicated by a phantom line in FIG. 16. The stacker  130  is extended to a position in front of the printer  100  as indicated by an arrowhead C. A recording sheet S on the tray  120  is fed and printed, and then the printed sheet is discharged onto the stacker  130 .  
         [0103]    When the printer  100  is not in use, the stacker  130 , while being curved, is raised in the reverse direction to the direction of the arrowhead C, and covers the sheet discharging opening  116  and the upper face of the main body  110 , while enveloping the main body  110 . Finally, T-shaped engagement holes  131  are engaged with associated buttons  117  and fixed thereto.  
         [0104]    The tray  120  is curved in the opposite direction to the direction of the arrow D to close the sheet inlet  118 . As a result, the tray  120  and the stacker  130  are disposed as if those hold the main body  110  tightly, thereby protecting the printer against dust.  
         [0105]    The house mark and the effective usage of the printer  100 , and a user friendly display section  132 , such as impressive print patterns may be provided on the rear side of the stacker  130  which is located outside when it is not used. As a result, the utility value of the tray and the product value of the printer as well are increased.  
         [0106]    Although the present invention has been shown and described with reference to specific preferred embodiments, various changes and modifications will be apparent to those skilled in the art from the teachings herein. Such changes and modifications as are obvious are deemed to come within the spirit, scope and contemplation of the invention as defined in the appended claims.