This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2019-159438 filed Sep. 2, 2019.
The present disclosure relates to a sheet container, a sheet feeder, and an image forming system.
Japanese Unexamined Patent Application Publication No. 2016-000653 describes a sheet feeder and an image forming apparatus in which damage to an extension part may be prevented.
Aspects of non-limiting embodiments of the present disclosure relate to a sheet container in which a connection member for long sheets may be connected while keeping an attached state of a contact part for non-long sheets.
Aspects of certain non-limiting embodiments of the present disclosure address the above advantages and/or other advantages not described above. However, aspects of the non-limiting embodiments are not required to address the advantages described above, and aspects of the non-limiting embodiments of the present disclosure may not address advantages described above.
According to an aspect of the present disclosure, there is provided a sheet container comprising a housing, a stacking part provided in the housing so that recording sheets are stacked on the stacking part, a contact part to be brought into contact with edges of the recording sheets in a length direction on the stacking part in an attached state in which the contact part is attached into the housing, a connection member connected to the stacking part or the housing and having an extension part longer than the stacking part in the length direction, and a retreater that retreats the contact part in the attached state from the extension part with the connection member connected to the stacking part or the housing.
An exemplary embodiment of the present disclosure will be described in detail based on the following figures, wherein:
An exemplary embodiment of the present disclosure is described below. In the following description, a direction indicated by an arrow X in the drawings is a width direction and a direction indicated by an arrow Y in the drawings is a height direction. A direction orthogonal to the width direction and the height direction (direction indicated by an arrow Z) is a depth direction.
An image forming system 10 according to the exemplary embodiment forms images on sheets P that are examples of a recording sheet. As illustrated in
As illustrated in
Next, the structure of the sheet container 102 is described. As illustrated in
The sheet container 102 may contain long sheets PL by attaching an extension option 110 to the upper tray 106a. The long sheet PL is one type of sheet P longer than the non-long sheet PS. Description is made first about the sheet container 102 without the extension option 110, and then about the sheet container 102 with the extension option 110.
Referring to
As illustrated in
The stacking plate 108 is an example of a stacking part where the non-long sheets PS are stacked, and is a rectangular plate arranged at the bottom of the upper tray 106a. The stacking plate 108 may ascend or descend relative to the bottom of the upper tray 106a by using a lift (not illustrated). Examples of the lift include a wire lift that raises the stacking plate 108 by being coupled to a hoisting mechanism to hoist four wires fixed to four corners of the stacking plate 108, and lowers the stacking plate 108 by gravity by being decoupled from the hoisting mechanism.
The stacking plate 108 has rectangular side cavities (not illustrated) formed on both sides in the depth direction and extending in the height direction. The stacking plate 108 has a rectangular cavity 108a formed between the two side cavities and extending in the height direction. As illustrated in
The stacking plate 108 has an opening 108e at the top of the cavity 108a. The cavity 108a allows the end guide 170 to move in the width direction by the slide mechanisms 107 described later.
The stacking plate 108 has placement parts 108d (not illustrated) in the cavity 108a so that the shutter 140 described later may be placed. The stacking plate 108 also has placement parts (not illustrated) at the top of each side cavity on both sides in the depth direction so that the side shutter 150 described later may be placed over the side cavity.
As illustrated in
As illustrated in
As illustrated in
Each side shutter 150 is arranged in a removable manner on the placement parts over the side cavity of the stacking plate 108 and closes the side cavity.
When the shutter 140 and the side shutters 150 are arranged on the stacking plate 108, the sheets P on the stacking plate 108 are supported by the stacking plate 108, the shutter 140, and the side shutters 150 as illustrated in
The lower tray 106b is arranged below the upper tray 106a and has a structure similar to that of the upper tray 106a.
The transporters 104 are arranged near the image forming apparatus 12 above the upper tray 106a and the lower tray 106b in the housing 106, respectively. A panel 106e is provided in a removable manner on a side of the upper tray 106a in the housing 106 opposite the image forming apparatus 12. When the extension option 110 is attached to the sheet container 102, the panel 106e is removed to form an opening 106c on the side of the upper tray 106a. The housing 106 has an openable cover 106f that covers the upper tray 106a from the top. The panel 106e is removed and the cover 106f is opened to form a space through which the long sheets PL are stacked on an extended stacking surface 121 described later from the top.
As described above, the sheet container 102 has at least the housing 106, the stacking plate 108, the threaded holes 108c, the end guide 170, and the shutter 140.
(Sheet Container with Extension Option)
Next, description is made about the sheet container 102 with the extension option 110.
As illustrated in
As illustrated in
As illustrated in
The lower end of the frame 120a of the first extension member 120 is positioned on the stacking plate 108 of the upper tray 106a. The frame 120a is connected to the stacking plate 108 with screws (not illustrated) driven into the threaded holes 108c of the stacking plate 108. The projecting plate 120b projects from the housing 106 through the opening 106c. Therefore, the upper tray 106a is not drawable while the first extension member 120 is connected. In
The first extension member 120 has the extended stacking surface 121 defined by the upper end of the frame 120a and the projecting plate 120b. The extended stacking surface 121 is an example of an extension part longer than the stacking plate 108 in the width direction. The first extension member 120 is an example of the connection member having the extended stacking surface 121.
As illustrated in
The cavity 120d is longer than an upper part 172 of the end guide 170 described later in the width direction. The frame 120a has an opening 120e at the top of the cavity 120d. The size of the opening 120e is substantially equal to that of the opening 108e of the stacking plate 108. The opening 120e allows the end guide 170 to move in the width direction by the slide mechanism 107. The frame 120a has placement parts 120f at the top of the cavity 120d on both sides in the depth direction so that the shutter 140 may be placed over the cavity 120d. The frame 120a also has placement parts 120g at the top of each cavity 120c on both sides in the depth direction so that the side shutter 150 may be placed over the cavity 120c.
As illustrated in
The sheets P are stacked on the extended stacking surface 121 at a position higher than the upper surface of the stacking plate 108 in the height direction. In other words, the first extension member 120 raises the stacking position of the sheets P from the upper surface of the stacking plate 108 to limit the stacking amount of the sheets P in the height direction on the upper tray 106a to a smaller amount than in a case where the first extension member 120 is not connected. The first extension member 120 is an example of the raising member that raises the stacking position of the sheets P and is also an example of the connection member described above. The cavity 120d is an example of a raising space defined by the raising member. The end guide 170 extending in the height direction projects through the opening 120e of the first extension member 120 beyond the extended stacking surface 121 (see
When the stacking plate 108 of the upper tray 106a is moved in the height direction by the lift (not illustrated), the first extension member 120 moves together with the stacking plate 108.
As illustrated in
When the stacking plate 108 is located at the bottom of the upper tray 106a as illustrated in
As illustrated in
As illustrated in
The lower part 174 has a rectangular parallelepiped body 174c extending in the height direction. The height of the body 174c is set smaller than the height of the bottom surface of the placement part 120f of the first extension member 120 connected to the stacking plate 108. The body 174c has steps 174a at its upper end on both sides in the depth direction. The steps 174a have stepped surfaces 174b relative to the upper surface of the body 174c. In the exemplary embodiment, the height of the body 174c is set larger than the height of the middle part of the end guide 170 in the height direction.
As illustrated in
The shaft 192 is arranged through the projecting plates 172a of the upper part 172 and the body 174c of the lower part 174 in the depth direction and supports the upper part 172 in a turnable manner.
The lock mechanism 194 has a known structure inside the end guide 170 to restrain a turn of the upper part 172 about the shaft 192. The lock mechanism 194 includes a lever 194a. The lever 194a is an example of a manipulator for the folding structure 190 and may be pulled up toward the distal end of the end guide 170 in the recess 172c. The restraint of the turn of the upper part 172 about the shaft 192 by the lock mechanism 194 is terminated by raising the lever 194a.
The stopper 196 is an example of a regulator that regulates a turnable range of the upper part 172 about the shaft 192. The stopper 196 includes the projecting plates 172a of the upper part 172 and the steps 174a of the lower part 174.
When the upper part 172 is in a posture in which the upper part 172 extends in the height direction as illustrated in
When the upper part 172 is in a posture in which the upper part 172 turns about the shaft 192 to tilt toward the image forming apparatus 12 and therefore extends in the width direction as illustrated in
The structure of the stopper 196 is not limited to the structure described above. For example, when the upper part 172 is in the upright posture, a thin plate projecting from the side surface 172d of the upper part 172 toward the projecting plates 172a may interfere with a side surface of the lower part 174 opposite the image forming apparatus 12.
As described above, the end guide 170 may switch the two postures of the upper part 172, that is, the upright posture (see
When the upper part 172 is in the folded posture as illustrated in
When the first extension member 120 is connected to the stacking plate 108 as illustrated in
When the first extension member 120 is connected to the stacking plate 108, the shutter 140 and the side shutters 150 are arranged in a removable manner on the placement parts 120f and 120g of the first extension member 120 as illustrated in
Next, the structure of the sheet container 200 is described. The structure of the sheet container 200 is similar to that of the sheet container 102 except that the top of the housing 106 and the top of the extension cover 112 in the sheet container 102 are open. The sheet container 200 adjoins the image forming apparatus 12 opposite the sheet feeder 100 while being oriented opposite the sheet container 102 in the width direction.
In the following description, comparative examples and comparative apparatuses may be provided in comparison with the exemplary embodiment of the present disclosure. When the components of the image forming system 10 according to the exemplary embodiment of the present disclosure are described, the reference symbols and names of the components are used as they are.
The first extension member 120 serves as the connection member having the extended stacking surface 121 and as the raising member that raises the stacking position of the sheets P. In other words, the first extension member 120 has the connection member and the raising member integrated together.
The sheet container 102 has the structure in which a part of the projecting plate 120b of the first extension member 120 projects outward from the housing 106 through the opening 106c of the housing 106 (first structure). That is, the size of the housing 106 of the sheet container 102 depends on the size of the frame 120a of the first extension member 120. The size of a housing of a sheet container having the projecting plate 120b inside the housing (first comparative apparatus) depends on the size of the first extension member 120 including the projecting plate 120b. The first comparative apparatus is encompassed in the technical thought of the exemplary embodiment of the present disclosure as its modified example.
The sheet container 102 has the structure in which the folding structure 190 retreats the end guide 170 to a space below the extended stacking surface 121 (second structure). The sheet container 102 having the second structure is compared with a sheet container in which the end guide retreats to a space above the extended stacking surface 121 (second comparative apparatus). The structure of the second comparative apparatus is similar to that of the sheet container 102 except that the end guide of the upper tray 106a is attached to a ceiling of the upper tray 106a while being inverted compared with the end guide 170 of the exemplary embodiment. In the second comparative apparatus, the maximum stacking amount of the sheets P in the height direction on the extended stacking surface 121 is limited by a space from the extended stacking surface 121 to the end guide because the end guide retreats to the space above the extended stacking surface 121. In the sheet container 102 having the second structure, the maximum stacking amount of the sheets P in the height direction on the extended stacking surface 121 is not limited by the space from the extended stacking surface 121 to the end guide. The second comparative apparatus is encompassed in the technical thought of the exemplary embodiment of the present disclosure as its modified example.
The sheet container 102 has the structure in which the end guide 170 retreats from the extended stacking surface 121 to the cavity 120d of the first extension member 120 (third structure). The sheet container 102 having the third structure is compared with a sheet container in which the end guide 170 retreats to a space provided on a side of the first extension member 120 (third comparative apparatus). The structure of the third comparative apparatus is similar to that of the sheet container 102 except that the end guide 170 retreats to that space. In the third comparative apparatus, the size of the housing of the third comparative apparatus depends on the sizes of the first extension member 120 and the space because the space is provided on the side of the first extension member 120. In the sheet container 102, the space corresponds to the cavity 120d of the first extension member 120 and the size of the housing 106 is smaller than that of the housing of the third comparative apparatus by an amount corresponding to the space. The third comparative apparatus is encompassed in the technical thought of the exemplary embodiment of the present disclosure as its modified example.
The sheet container 102 has the structure in which the upper part 172 extending in the height direction (see
The height of the lower part 174 is set larger than the height of the middle part of the end guide 170 in the height direction. That is, the sheet container 102 has the structure in which the upper part 172 positioned above the middle part of the end guide 170 in the height direction tilts in the width direction (fifth structure). The sheet container 102 having the fifth structure is compared with a sheet container including an end guide 170 that retreats from the extended stacking surface 121 by tilting at the root of the lower part 174 (fifth comparative apparatus). The structure of the fifth comparative apparatus is similar to that of the sheet container 102 except that the end guide 170 retreats from the extended stacking surface 121 by tilting at the root of the lower part 174. In the fifth comparative apparatus, the end guide 170 retreats from the extended stacking surface 121 by tilting at the root of the lower part 174, that is, tilting in a range from the upper part 172 to the lower part 174. In the sheet container 102 having the fifth structure, the end guide 170 retreats from the extended stacking surface 121 by tilting the upper part 172 alone. Thus, the movement range of the retreating end guide 170 is narrower in the sheet container 102 than in the fifth comparative apparatus. The fifth comparative apparatus is encompassed in the technical thought of the exemplary embodiment of the present disclosure as its modified example.
The sheet container 102 has the structure in which the upper part 172 of the end guide 170 tilts in the direction in which the upper part 172 is brought into contact with the sheets P (sixth structure). The sheet container 102 having the sixth structure is compared with a sheet container including an end guide 170 that retreats from the extended stacking surface 121 by tilting the upper part 172 in a direction opposite the direction in which the upper part 172 is brought into contact with the sheets P (sixth comparative apparatus). The structure of the sixth comparative apparatus is similar to that of the sheet container 102 except that the end guide 170 retreats from the extended stacking surface 121 by tilting the upper part 172 in the direction opposite the direction in which the upper part 172 is brought into contact with the sheets P, that is, tilting the upper part 172 away from the image forming apparatus 12. Since the upper part 172 of the sixth comparative apparatus tilts away from the image forming apparatus 12, the upper part 172 may interfere with the housing 106 when the end guide 170 farthest from the image forming apparatus 12 in the cavity 120d retreats. In the sheet container 102 having the sixth structure, the end guide 170 farthest from the image forming apparatus 12 in the cavity 120d retreats by tilting the upper part 172 in the direction in which the upper part 172 is brought into contact with the sheets P, that is, in a direction in which the upper part 172 does not interfere with the housing 106. The sixth comparative apparatus is encompassed in the technical thought of the exemplary embodiment of the present disclosure as its modified example.
The sheet container 102 has the structure in which the end guide 170 retreats by tilting the upper part 172 in the upright posture at the angle of 100° or smaller (seventh structure). The sheet container 102 having the seventh structure is compared with a sheet container in which the upper part 172 of the end guide 170 in the upright posture tilts at an angle larger than 100° (seventh comparative apparatus). The structure of the seventh comparative apparatus is similar to that of the sheet container 102 except that the upper part 172 of the end guide 170 in the upright posture tilts at the angle larger than 100°. In the sheet container 102 having the seventh structure, the tilting motion of the upper part 172 when the end guide 170 retreats is smaller than that in the seventh comparative apparatus. The seventh comparative apparatus is encompassed in the technical thought of the exemplary embodiment of the present disclosure as its modified example.
The sheet container 102 has the structure in which the end guide 170 retreats by tilting the upper part 172 in the upright posture at the angle of 80° or larger (eighth structure). The sheet container 102 having the eighth structure is compared with a sheet container in which the upper part 172 of the end guide 170 in the upright posture tilts at an angle smaller than 80° (eighth comparative apparatus). The structure of the eighth comparative apparatus is similar to that of the sheet container 102 except that the upper part 172 of the end guide 170 in the upright posture tilts at the angle smaller than 80°. The height of the first extension member having the extended stacking surface depends on the height of the retreated end guide 170. The height of the end guide 170 in which the upper part 172 in the upright posture tilts at the angle of 80° or larger is smaller than the height of the end guide 170 in which the upper part 172 tilts from the lower part 174 at the angle smaller than 80°. In the sheet container 102 having the eighth structure, the height of the first extension member 120 having the extended stacking surface 121 is smaller than the height of the first extension member of the eighth comparative apparatus. The eighth comparative apparatus is encompassed in the technical thought of the exemplary embodiment of the present disclosure as its modified example.
The sheet container 102 has the structure in which the extended stacking surface 121 has the opening 120e through which the upper part 172 may pass. Thus, even though the extension option 110 is attached to the sheet container 102, the upper part 172 of the retreated end guide 170 may pass through the opening 120e into the upright posture to project beyond the extended stacking surface 121. The end guide 170 projecting beyond the extended stacking surface 121 and extending in the height direction is brought into contact with the non-long sheets PS stacked on the extended stacking surface 121.
In the sheet container 102, the opening 120e is shaped such that the end guide 170 is allowed to move in the width direction by the slide mechanism 107.
In the sheet container 102, the cavity 120d is formed in the frame 120a of the first extension member 120. In other words, the opening 120e at the top of the cavity 120d is formed within the range of the stacking plate 108.
The sheet container 102 includes the shutter 140 that opens or closes the opening 120e in the extended stacking surface 121 or the opening 108e in the stacking plate 108. When the shutter 140 closes the opening 120e or the opening 108e, the sheets P on the extended stacking surface 121 or the stacking plate 108 are placed along the width direction.
The shutter 140 of the sheet container 102 closes a part of the opening 120e or the opening 108e near the image forming apparatus 12 with respect to the end guide 170 in response to the movement of the end guide 170 in the width direction. In other words, the first shutter 140 closes the opening 120e or the opening 108e on a side where the end guide 170 is brought into contact with the sheets P.
The end guide 170 may switch the two postures, that is, the upright posture (see
In the sheet container 200, the first extension member 120 is connected to define the extended stacking surface 121 where the long sheets may be stacked.
Next, Modified Example 1 of the exemplary embodiment is described. When the components of the image forming system 10 according to the exemplary embodiment are described in Modified Example 1, the reference symbols and names of the components are used as they are.
The sheet container 102 of Modified Example 1 may contain the long sheets PL by attaching an extension option 310 to the upper tray 106a. The extension option 310 of Modified Example 1 includes the extension cover 112, a raising member 320a, a first extension member 320b, the second extension member 130, and the option guide 160.
In Modified Example 1, the upper tray 106a has threaded holes 106g at the bottom (see
In Modified Example 1, the stacking plate 108 has threaded holes 108g at its end opposite the image forming apparatus 12 (see
The raising member 320a has the same structure as that of the frame 120a of the first extension member 120 according to the exemplary embodiment. The raising member 320a is attached to the upper tray 106a with screws (not illustrated) driven into the threaded holes 106g of the upper tray 106a. The stacking plate 108 is mounted on the raising member 320a. In other words, the raising member 320a raises the stacking plate 108. That is, the raising member 320a raises the stacking position of the sheets P. Thus, the raising member 320a limits the stacking amount of the sheets P in the height direction on the upper tray 106a to a smaller amount than in a case where the raising member 320a is not connected.
The first extension member 320b has a shape similar to that of the projecting plate 120b of the first extension member 120 according to the exemplary embodiment. The first extension member 320b is an example of a connection member having an extended stacking surface 321 and is connected to the stacking plate 108 with screws (not illustrated) driven into the threaded holes 108g of the stacking plate 108.
When the first extension member 320b is connected to the stacking plate 108, the upper surface of the first extension member 320b extends along the upper surface of the stacking plate 108. Thus, the upper surface of the first extension member 320b and the upper surface of the stacking plate 108 raised by the raising member 320a define the extended stacking surface 321 that is an example of the extension part longer than the stacking plate 108 in the width direction.
In Modified Example 1, the shutter 140 is arranged on the placement parts 108d over the opening 108e in the stacking plate 108 raised by the raising member 320a. In Modified Example 1, each side shutter 150 is arranged on the placement parts over the side cavity in the stacking plate 108 raised by the raising member 320a.
When the raising member 320a is attached to the upper tray 106a as illustrated in
In other respects, the structure of the image forming system of Modified Example 1 is similar to that in the exemplary embodiment.
Next, Modified Example 2 of the exemplary embodiment is described. When the components of the image forming system 10 according to the exemplary embodiment and the components in Modified Example 1 are described in Modified Example 2, the reference symbols and names of the components are used as they are.
The sheet container 102 of Modified Example 2 may contain the long sheets PL by attaching an extension option 311 to the upper tray 106a. The extension option 311 of Modified Example 2 includes the raising member 320a, a first extension member 330, and the option guide 160.
In Modified Example 2, the stacking plate 108 is raised by the raising member 320a similarly to Modified Example 1. The stacking plate 108 has a recess 108j at the end of its upper surface opposite the image forming apparatus 12 (see
In Modified Example 2, the housing 106 has threaded holes 106j in its side surface opposite the image forming apparatus 12 (see
The first extension member 330 includes a support 332, a plate 334, the plate 336, and a hinge 338 similarly to the second extension member 130 according to the exemplary embodiment. The support 332 of the first extension member 330 is connected to the housing 106 with screws (not illustrated) driven into the threaded holes 106j of the housing 106. A distal end 336a of the plate 336 of the first extension member 330 that faces the image forming apparatus 12 is brought into contact with the bottom surface of the recess 108j of the stacking plate 108 (see
When the raising member 320a is attached to the upper tray 106a as illustrated in
In other respects, the structure of the image forming system of Modified Example 2 is similar to that in Modified Example 1.
In the exemplary embodiment, the threaded hole is the example of the connector to which the connection member is connected. However, the connector is not limited to the threaded hole. For example, the connector may be a recess formed in the upper surface of the stacking plate 108 and a projection formed on the bottom surface of the frame 120a of the first extension member 120 may be fitted into the recess. The connection member may be connected to the connector by a clamp mechanism. The same applies to the receptacle to which the raising member is attached.
In Modified Example 1 and Modified Example 2, the threaded hole 106g of the housing 106 serves as the receptacle to which the raising member 320a is attached. However, the receptacle may be provided at the bottom of the stacking plate 108.
In Modified Example 1, the threaded hole 108g of the stacking plate 108 serves as the connector to which the first extension member 320b is connected. However, the connector is not limited to the one provided to the stacking plate 108. For example, the connector may be a threaded hole formed in the side surface of a raising member opposite the image forming apparatus 12. In this case, the raising member is attached to the upper surface of the stacking plate 108.
In the exemplary embodiment, the folding structure 190 of the end guide 170 serves as the retreater. However, the retreater is not limited to the one provided to the end guide 170. For example, the retreater may be a retractor that is provided at the bottom of the housing 106 and retracts the end guide 170 to a space below the upper tray 106a by lowering the end guide 170 in the height direction.
In the exemplary embodiment, the lever 194a arranged in the recess 172c formed in the side surface 172d of the upper part 172 of the end guide 170 serves as the manipulator of the lock mechanism 194. However, the manipulator of the lock mechanism 194 is not limited to the lever or to the one arranged on the side surface 172d of the end guide 170. For example, the manipulator of the lock mechanism 194 may be a button. Further, the manipulator of the lock mechanism 194 may be arranged at the distal end of the upper part 172 of the end guide 170.
In the exemplary embodiment, the wire lift may be used as the example of the lift that moves the stacking plate 108 in the height direction. However, the lift may be provided on the stacking plate 108. Specifically, the lift may be legs that are provided on the bottom surface of the stacking plate 108 and extend or contract in the height direction.
In the exemplary embodiment, the lower tray 106b is arranged below the upper tray 106a in the housing 106. However, the housing 106 need not have the lower tray 106b.
The foregoing description of the exemplary embodiment of the present disclosure has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. Obviously, many modifications and variations will be apparent to practitioners skilled in the art. The embodiment was chosen and described in order to best explain the principles of the disclosure and its practical applications, thereby enabling others skilled in the art to understand the disclosure for various embodiments and with the various modifications as are suited to the particular use contemplated. It is intended that the scope of the disclosure be defined by the following claims and their equivalents.
Number | Date | Country | Kind |
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2019-159438 | Sep 2019 | JP | national |