JPS6326360Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a copy paper supply device in a copying machine, more specifically, it is equipped with at least two copy paper loading sections into which stacked sheets of copy paper are loaded, The present invention relates to a copy paper feeding device in a copying machine in which copy paper is fed from an appropriately selected copy paper loading section.

Recently, a copy paper supply device in a copying machine is equipped with at least two copy paper loading sections into which stacked sheets of copy paper are loaded. Dimensions (or color, material, etc.) of each loaded part
Copy paper supply devices that are configured to be able to feed copy paper appropriately selected from at least two types of copy paper having different values are widely used in practice. In such a copy paper supply device, each copy paper loading section is provided with a copy paper introduction path extending therefrom, and these copy paper introduction paths merge with each other, and from this merging point, a copy paper introduction path is provided. A common copy paper transport path extends. The copy paper fed from each copy paper loading section is moved through a copy paper introduction path extending from each copy paper loading section and enters a common copy paper transport path, and while traveling through this copy paper transport path, the copy paper is It undergoes necessary processing such as transfer necessary to form an image.

In the copy paper supply device as described above, it is important that the following requirements are satisfied.

First, the feeding of the copy paper from the copy paper loading position is generally carried out by a feeding action caused by the rotation of a feed roller that contacts the top surface of the uppermost copy paper among the stacked sheets of copy paper; This is accomplished by separating the uppermost copy paper from the other copy papers and feeding it in cooperation with the separating action of a pair of separation claws that engage with both corners of the leading edge of the copy paper. Ru. However,
As is well known to those skilled in the art, in the feeding of such copy paper, the leading edge corners of the uppermost copy paper are not necessarily separated from each of the pair of separating claws at the same time, and so on. The leading edge of the fed copy paper is often not exactly perpendicular to the direction of copy paper movement, but is inclined. If fed copy paper is moved through the copy paper conveyance path in such an inclined state, there is a high risk of paper jams, and a copy image will be formed on the copy paper in an inclined state with respect to the copy paper. It will be done. Therefore, before the copy paper fed from the copy paper loading section moves through the copy paper transport path and undergoes the required processing, it is necessary to ensure that the leading edge of the copy paper is exactly perpendicular to the direction of copy paper movement. It is important to add a posture-correcting effect to the copy paper to make it easier.

Second, as is well known to those skilled in the art, in the copy paper feeding operation as described above, which is performed by the cooperation of the feeding action by the rotation of the feeding roller and the separating action by the separating claw, The time interval between the time when the feed roller starts rotating and the time when the copy paper is actually fed to a predetermined position is not stable and varies depending on various conditions at the time. In addition, at least 2
It is extremely difficult, if not impossible, to design the copy paper path lengths of the copy paper introduction paths provided in connection with each of the copy paper loading sections to be the same. Therefore, for example, by appropriately controlling the timing at which the feed roller starts rotating, the movement of the copy paper through the copy paper conveyance path can be adjusted to perform processes such as exposure or transfer of the original image. Even if synchronization is attempted, synchronization cannot be achieved with sufficient accuracy, resulting in so-called positional deviation between the copy paper and the copy image formed thereon. Therefore, before the copy paper fed from the copy paper loading section moves through the copy paper transport path and undergoes the required processing, a synchronization adjustment action is applied to the copy paper, thus causing the copy paper to pass through the copy paper transport path. It is important that the movement be sufficiently precisely synchronized with the performance of processes such as exposure or transfer of the original image.

As a known copy paper feeding device that satisfies the above-mentioned first and second requirements, Japanese Patent Application Laid-Open No. 1989-
Examples include the copy paper supply device disclosed in Japanese Utility Model Publication No. 63944 or Japanese Utility Model Application Publication No. 54-33645.

In the copy paper feeding device disclosed in Japanese Patent Application Laid-open No. 50-63944, a pair of conveying rollers is provided in each of the copy paper introduction paths arranged for each of the two copy paper loading sections, and , to the upstream part of a common copy paper conveyance path extending from the confluence of the two copy paper introduction paths (that is, to the upstream part of the part where required processing is performed on the copy paper passing through the copy paper conveyance path). A pair of rollers is provided. The pair of conveying rollers provided in each of the copy paper introduction paths is started to operate after the leading edge of the copy paper fed from the copy paper loading section comes into contact with it and the posture of the copy paper is thus corrected. That is, the pair of conveyance rollers provided in each of the copy paper introduction paths performs an attitude correction action on the copy paper fed from each copy paper loading section. On the other hand, the pair of conveying rollers provided in the upstream portion of the copy paper conveying path is operated by the pair of conveying rollers provided in the copy paper introducing path, and the copy paper is transferred from the copy paper introducing path by the action of the pair of conveying rollers. After the leading edge of the copy paper carried into the copy paper conveyance path comes into contact with it, the operation is started in synchronization with the execution of a process such as exposure or transfer of the original image, thus controlling the movement of the copy paper through the copy paper conveyance path. It is synchronized with the execution of processes such as image exposure or transfer. That is, the pair of transport rollers provided upstream of the copy paper transport path performs a synchronization adjustment operation on the copy paper introduced into the copy paper transport path.

As described above, the copy paper feeding device disclosed in Japanese Patent Application Laid-Open No. 50-63944 fully satisfies the first and second requirements mentioned above. However, in such a copy paper supply device, (a) In a copy paper supply device equipped with two copy paper loading sections, two copy paper feeding units are required to perform the required posture correction action and synchronization adjustment action on the copy paper. It requires at least three pairs of conveying rollers, one pair provided in each of the copy paper introduction paths and a pair of conveyance rollers provided upstream of the copy paper conveyance path, and is therefore relatively complex and expensive. (b) It is necessary to start the operation of the pair of transport rollers provided in the copy paper introduction path and the start of the operation of the pair of transport rollers provided in the copy paper transport path at separate times, and therefore It is not possible to interlock the pair of conveying rollers provided in the copy paper introduction path and the pair of conveying rollers provided in the copy paper conveying path, and the operation of both must be controlled separately. The disadvantage is that the configuration for controlling the operation of the device is relatively complex and expensive.

On the other hand, in the copy paper supply device disclosed in Japanese Utility Model Application Publication No. 54-33645, a copy paper feeder is provided for each of two copy paper loading sections, that is, a first copy paper loading section and a second copy paper loading section. A first pair of transport rollers is provided in the first copy paper introduction path, which is one of the first and second copy paper introduction paths, and the first copy paper introduction path and the second copy paper introduction path are A second pair of transport rollers is provided at the junction with the road. In such a copy paper supply device, when copy paper is fed from the first copy paper loading section, the copy paper is sent to the first copy paper introduction path, and its leading edge is aligned with the first copy paper introduction path. After the copy sheet comes into contact with the pair of conveying rollers and thus its posture is corrected, the first pair of conveying rollers is activated. The copy paper conveyed through the first copy paper introduction path by the action of the first pair of conveyance rollers is stopped again when its leading edge comes into contact with the second pair of conveyance rollers. Thereafter, the operation of the second transport roller pair is started in synchronization with the execution of the process of exposing or transferring the original image, and thus the movement of the copy paper through the copy paper transport path is controlled by the process of exposing or transferring the original image. Synchronize with process execution. Therefore, with respect to the copy paper fed from the first copy paper loading section, the first pair of conveyance rollers performs a posture correcting action, and the second pair of conveyance rollers performs a synchronization adjustment action. . On the other hand, when copy paper is fed from the second copy paper loading section, the copy paper is sent to the second copy paper introduction path, and its leading edge abuts the second pair of conveying rollers, thus causing The posture of the copy paper is corrected. Thereafter, the operation of the second transport roller pair is started in synchronization with the execution of the process of exposing or transferring the original image, and thus the movement of the copy paper through the copy paper transport path is controlled by the process of exposing or transferring the original image. Synchronize with process execution. Therefore, the second
The second pair of transport rollers performs both an attitude correction action and a synchronization adjustment action on the copy paper fed from the copy paper loading section.

As described above, in the copy paper feeding device disclosed in Japanese Utility Model Application Publication No. 54-33645,
When two copy paper loading sections are provided, two pairs of transport rollers, a first pair of conveyance rollers provided in the first copy paper introduction path and a second pair of conveyance rollers provided in the copy paper conveyance path, are provided. The above-mentioned first and second requirements are fully satisfied by the pair of conveying rollers, and therefore, the
The copy paper feeding device disclosed in Japanese Patent No. 63944 does not have the above drawback (a). However, even in the copy paper feeding device disclosed in Japanese Utility Model Application Publication No. 54-33645, the operation of the first pair of conveying rollers and the start of operation of the second pair of conveying rollers are performed at different times. Therefore, there is a drawback similar to the above-mentioned drawback (b) found in the copy paper feeding device disclosed in Japanese Patent Application Laid-Open No. 50-63944.

The present invention has been made in view of the above facts, and its main purpose is to solve both of the above drawbacks (a) and (b) found in known copy paper feeding devices, and therefore Although the configuration is simpler and cheaper than the supply device, the above-mentioned first and second
An object of the present invention is to provide an improved copy paper feeding device that fully satisfies the requirements of the present invention.

According to the present invention, a plurality of copy paper loading sections into which stacked sheets of copy paper are loaded, a copy paper feeding mechanism disposed in each of the copy paper loading sections, and the copy paper loading section A copy paper introduction path extending from each of the above to the confluence point, a copy paper conveyance path extending from the confluence point, and other copy paper except for one specific copy paper inlet path extending from one specific copy paper loading section. a first pair of conveyance rollers disposed in each of the carry-in paths, a second pair of conveyance rollers disposed at the confluence or an upstream portion of the copy paper conveyance path, and the first and second conveyance rollers. In a copy paper supply device comprising a control mechanism for controlling the operation of the roller pair, the first conveying roller pair and the second conveying roller pair are interlocked by an interlocking mechanism, and the specific Compared to the case where copy paper is fed from one copy paper loading section, when copy paper is fed from another copy paper loading section, the first conveyance roller pair
There is provided a copy paper supply device characterized in that the control mechanism starts the operation of the first and second transport roller pairs earlier by the time required to transport the copy paper to the transport roller pair.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific example of a copy paper feeding apparatus constructed in accordance with the present invention will be described in more detail with reference to the accompanying drawings.

Referring to FIG. 1, the illustrated copy paper supply device includes two copy paper loading sections, namely a first copy paper loading section 2a and a second copy paper loading section 2b. . Laminated sheets of copy paper 6a and 6b housed in cassette containers 4a and 4b are removably loaded into the first copy paper loading section 2a and the second copy paper loading section 2b, respectively. . The copy paper 6a and the copy paper 6b may be different in size (or color, material, etc.). Cassette container 4
A pair of separation claws 8a are provided at both corners of the upper end of the leading edge of each of the stacked copy sheets 6a and 4b, which engage with both corners of the front edge of the uppermost copy sheet of the stacked copy sheets 6a and 6b. and 8b (only one of the pair of separating claws is shown in the drawing). Further, the first copy paper loading section 2a and the second copy paper loading section 2b each include a first copy paper feeding mechanism 10a.
and a second copy paper feeding mechanism 10b are provided. The first copy paper feeding mechanism 10a is composed of a rotatably mounted shaft 12a and a feeding roller 14a mounted on this shaft 12a. It is composed of a freely mounted shaft 12b and a feed roller 14b mounted on this shaft 12b.

The copy paper supply device further includes a first copy paper introduction path 16a extending from the first copy paper loading section 2a, and a second copy paper introduction path 16b extending from the second copy paper loading section 2b. ing. The first copy paper introduction path 16a is defined by a pair of guide plates 18 and 20 and 22 and 24, and the second copy paper introduction path 1
6b is defined by a pair of guide plates 26 and 28. As can be easily understood from Figure 1, the first
copy paper introduction path 16a and second copy paper introduction path 16
b, and a common copy paper transport path 30 (in FIG. 1, only the upstream portion defined by the pair of guide plates 32 and 34 is shown) extends from the merging point. ing.

A first pair of transport rollers 36 is disposed in the first copy paper introduction path 16a. Further, a second conveyance roller pair 38 is provided at the confluence of the first copy paper introduction path 16a and the second copy paper introduction path 16b. The first transport roller pair 36 is a driven roller 4 mounted on a rotatably mounted shaft 40.
2, and a driven roller 46 mounted on a rotatably mounted shaft 44. Similarly, the second transport roller pair 38 includes a driven roller 50 mounted on a rotatably mounted shaft 48.
and a driven roller 54 mounted on a rotatably mounted shaft 52.

In the above configuration, the copy paper path length L 1 between the first copy paper loading section 2a and the first transport roller pair 36, and the copy paper path length L ₁ between the first transport roller pair 36 and the second transport roller pair Copy paper path length between 38
It is important that L ₂ is set shorter than the minimum length in the moving direction of the copy paper 6a loaded into the first copy paper loading section 2a and fed therefrom. Further, the copy paper path length L 3 between the second copy paper loading section 2b and the second conveying roller pair 38 is the length of the copy paper path length _L3 between the second copy paper loading section 2b and the second copy paper loading section 2b and the copy paper fed therefrom. It is important that the length is set shorter than the minimum length in the moving direction of 6b. On the other hand, if the above-mentioned requirements regarding the copy paper path lengths L ₂ and L ₃ are fulfilled, the second pair of transport rollers 38 will be in the position in the illustrated embodiment, i.e. in the first copy paper introduction path 1.
6a and the second copy paper introduction path 16b, ie, at the upstream portion of the copy paper transport path 30.

In the illustrated copy paper supply device, a first
The first copy paper introduction path 16 passes through an opening formed in the guide plate 18 on the upstream side of the conveyance roller pair 36.
a first detector 58 consisting of a detection switch having a detector 56 protruding into the interior of the guide plate 26;
The second copy paper introduction path 1 passes through the opening formed in the
A second detector 62 consisting of a detection switch having a detector 60 protruding into the detector 6b is provided.

Next, referring to FIG. 2 together with FIG. 1, the first copy paper feeding mechanism 1 in the illustrated copy paper feeding device will be described.
An example of a transmission and control mechanism for controlling and operating the second copy paper feeding mechanism 10a, the first pair of conveying rollers 36, and the second pair of conveying rollers 38 as required will be described.

At one end of the shaft 12a of the first copy paper feed mechanism 10a, a spring clutch 6, which is known per se, is mounted.
4a, and a sprocket wheel 66a is rotatably mounted. The spring clutch 64a disengages the shaft 12a from the sprocket wheel 66a when the solenoid 68a is deenergized and the actuation control member 70a is in the locked position shown in solid lines in FIG. Rotation is not transmitted to the shaft 12a, but when the solenoid 68a is energized and the actuation control member 70a is brought to the unlocked position shown by the two-dot chain line in FIG. 2, the shaft 12a is connected to the sprocket wheel 66a. Therefore, the rotation of sprocket wheel 66a is transmitted to shaft 12a. Also at one end of the shaft 12b of the second copy paper feeding mechanism 10b,
A spring clutch 64b is mounted, and a sprocket wheel 66b is rotatably mounted. Similarly to the above case, the connection and disconnection between the shaft 12b and the sprocket wheel 66b are controlled by a spring clutch 64b, which is controlled in accordance with the position of the actuation control member 70b moved by the solenoid 68b. carried out by. Furthermore, a second conveying roller pair 3
A spring clutch 72 is also attached to one end of the shaft 48 on which the eight driven rollers 50 are attached, and a sprocket wheel 74 is rotatably attached thereto. The connection and disconnection between the shaft 48 and the sprocket wheel 74 are controlled by the spring clutch 72, which is controlled in accordance with the position of the actuation control member 78 moved by the solenoid 76, as in the case described above. It is carried out accordingly.

Sprocket wheels 66a, 66b mentioned above
An endless chain 80 (only a portion of which is shown in FIG. 2) is wound around and 74. The endless chain 80 also wraps around an input sprocket wheel (not shown) which is drivingly connected to a suitable drive source (not shown) such as an electric motor. Therefore, when the drive source is energized, the endless chain 80 is driven in the direction shown by the arrow, thereby causing the sprocket wheels 66a,
66b and 74 are rotationally driven in the direction indicated by the arrow. When the solenoid 68a is energized, the spring clutch 64a connects the shaft 12a and the sprocket wheel 66a, so that the shaft 12a and the feed roller 14a attached to the shaft 12a are rotationally driven in the direction shown by the arrow. , thus the first copy paper feeding mechanism 10a is activated. Similarly, when solenoid 68b is energized, spring clutch 64b engages shaft 12b and sprocket wheel 66b.
Therefore, the shaft 12b and the feeding roller 14b mounted on the shaft 12b are rotationally driven in the direction shown by the arrow, and thus the second copy paper feeding mechanism 10
b is activated. Further, when the solenoid 76 is energized, the spring clutch 72 connects the shaft 48 and the sprocket wheel 74, so that the shaft 48 and the driven roller 50 attached to the shaft 48 are rotationally driven in the direction shown by the arrow. , thus the second conveying roller pair 38 is activated.

On the other hand, a spring clutch is not attached to one end of the shaft 40 on which the driven roller 42 of the first conveying roller pair 36 is attached, and only a sprocket wheel 82 is fixed thereto. Corresponding to this sprocket wheel 82, a sprocket wheel 84 is fixed to the shaft 48 on which the driven roller 50 of the second transport roller pair 38 is mounted.
An endless chain 86 is wound around the sprocket wheel 84 and the shaft 40.
It is linked with 8. Therefore, the first conveying roller pair 36 and the second conveying roller pair 38 are interlocked with each other, and when the shaft 48 is rotationally driven and the second conveying roller pair 38 is operated, the first conveying roller pair 36 and the second conveying roller pair 38 are simultaneously moved. The shaft 40 is rotationally driven and the first conveying roller pair 36 is operated.

Next, the effects of the copy paper supply device as described above will be explained.

For example, when a main switch (not shown) of a copier equipped with the illustrated copy paper feeder is closed, a drive source (not shown) is energized, thus causing the endless chain 80 to move as indicated by the arrow. sprocket wheels 66a, 6.
6b and 74 are rotationally driven in the direction shown by the arrow. Then, for example, when a copy process start switch (not shown) is closed, the solenoid 68a
Either the solenoid 68b or the solenoid 68b is energized. Selection of either the solenoid 68a or the solenoid 68b is achieved, for example, by the operator operating a copy paper selection switch (not shown).

First, we will explain the case where the solenoid 68a is selected, and therefore the copy paper 6a loaded in the first copy paper loading section 2a is selected. Spring clutch 64a then connects shaft 12a to sprocket wheel 66a, thus connecting shaft 12a to sprocket wheel 66a.
a and the feeding roller 14a attached to this shaft 12a are rotated in the direction shown by the arrow, and the operation of the first copy paper feeding mechanism 10a is started. In this way, the feed roller 1 rotates in the direction shown by the arrow.
4a and the separating action of the pair of separation claws 8a, the uppermost copy paper of the stacked copy papers 6a is separated from the other copy papers, and the first copy paper is separated from the other copy papers.
The copy paper is fed to the copy paper introduction path 16a. The front edge of the copy paper fed into the first copy paper introduction path 16a comes into contact with the nip portion of the first pair of conveying rollers 36 which is in an inactive state. If the edge is not exactly perpendicular to the direction of paper movement, the orientation of the copy paper is corrected so that it is sufficiently perpendicular. Further, when the leading edge of the copy paper comes into contact with the nip portion of the first pair of conveying rollers 36 in the inactive state, the movement of the leading edge of the copy paper is prevented, thereby causing the copy paper to move to the position shown in FIG. It is curved as shown by the dotted chain line. Thus, the first detector 58 is activated by moving the detector 56 of the first detector 58 from the position shown by the solid line in FIG. 1 to the position shown by the two-dot chain line in FIG. I am forced to do it.
Activation of first detector 58 deenergizes solenoid 68a, thus deactivating first copy paper feed mechanism 10a. Thereafter, when an optical system (not shown) or a document table (not shown) that is reciprocated to expose the document image moves to a predetermined position, the solenoid 76 is energized. The spring clutch 72 then connects the shaft 48 to the sprocket wheel 74, so that the shaft 48 and the driven roller 50 attached thereto are rotationally driven in the direction shown by the arrows to drive the second transport roller pair 38. At the same time, the shaft 40 interlocked with the shaft 48 and the driven roller 42 attached to this shaft 40 are rotationally driven in the direction shown by the arrow, and the first transport roller pair 36 begins to operate. be done. Then, the movement of the copy paper is resumed, and the copy paper is moved by the first pair of conveyance rollers 36 through the first copy paper introduction path 16a, and then the copy paper is conveyed by the second pair of conveyance rollers 38. 30, and furthermore,
The sheet is moved through the copy paper transport path by a suitable transport means (not shown), such as a pair of transport rollers, in synchronization with the exposure or transfer process of the original image as required.

Therefore, when the copy paper 6a loaded in the first copy paper loading section 2a is selected and the copy paper is fed from the first copy paper loading section 2a, the copy paper 6a loaded in the first copy paper loading section 2a is selected. The first transport roller pair 36 performs both an attitude correction action and a synchronization adjustment action on the paper.

Next, we will explain the case where the solenoid 68b is selected, and therefore the copy paper 6b loaded in the second copy paper loading section 2b is selected. In this case, the solenoid 68
Solenoid 68b is energized instead of solenoid a. In this way, the spring clutch 64b is connected to the shaft 12b.
is connected to the sprocket wheel 66b, so that the shaft 12b and the feed roller 14b mounted on the shaft 12b are rotationally driven in the direction shown by the arrow,
The operation of the second copy paper feeding mechanism 10b is started. In this way, the stacked copy paper 6b is separated by the cooperation of the feeding action of the feeding roller 14b rotating in the direction shown by the arrow and the separating action of the pair of separating claws 8b.
The uppermost copy sheet is separated from the other copy sheets and fed to the second copy sheet introduction path 16b. The copy paper fed to the second copy paper introducing path 16b is transferred to the second conveying roller pair 3 whose front edge is in an inactive state.
By contacting the nip portion of No. 8 and thus,
When the leading edge of the copy paper is not exactly perpendicular to the direction of copy paper movement, the orientation of the copy paper is corrected to be sufficiently accurate. Further, when the leading edge of the copy paper comes into contact with the nip portion of the second pair of transport rollers 38 in the inactive state, the movement of the leading edge of the copy paper is prevented, thereby causing the copy paper to move to the position shown in FIG. It is curved as shown by the dotted chain line. Thus, the second detector 62
The second detector 62 is activated by moving the detector from the position shown by the solid line in FIG. 1 to the position shown by the two-dot chain line in FIG. Activation of second detector 62 deenergizes solenoid 68b, thus deactivating second copy paper feed mechanism 10b. Thereafter, when an optical system (not shown) or a document table (not shown) that is reciprocated to expose the document image moves to a predetermined position, the solenoid 76 is energized. The spring clutch 72 then connects the shaft 48 to the sprocket wheel 7.
4, the shaft 48 and the driven roller 50 attached thereto are rotationally driven in the direction shown by the arrow, and the operation of the second conveying roller pair 38 is started (at the same time, the operation of the first conveying roller pair 38 is started). 36 operation is also started). The movement of the copy paper is then resumed, the copy paper is conveyed into the copy paper conveyance path 30 by the second pair of conveyance rollers 38, and is further conveyed by a suitable conveyance means (not shown) such as a pair of conveyance rollers. )
Accordingly, the copy paper transport path is moved in synchronization with the exposure or transfer process of the original image as required.

Therefore, when the copy paper 6b loaded in the second copy paper loading section 2b is selected and the copy paper is fed from the second copy paper loading section 2b, such copy paper is The second transport roller pair 38 performs both an attitude correction action and a synchronization adjustment action on the paper.

Thus, the front edge of the copy paper fed from the first copy paper loading section 2a touches the first pair of conveyance rollers 36.
Once stopped at the position where it abuts the nip portion of It will be done. On the other hand, the copy paper fed from the second copy paper loading section 2b is temporarily stopped at the position where its leading edge abuts the nip portion of the second pair of transport rollers 38, and the solenoid 76 is turned on. When the first pair of conveying rollers 36 and the second pair of conveying rollers 38 are activated, they are moved again from the above-mentioned position. Therefore, in order to synchronize the movement of the copy paper through the copy paper transport path 30 with the process of exposing or transferring the original image as required, it is necessary to load the copy paper into the second copy paper loading section 2b. Compared to the case where the copied paper 6b is selected and the copy paper is fed from the second copy paper loading section 2b by the operation of the second copy paper feeding mechanism 10b, the second copy paper loading section 2a is
When the copy paper 6a loaded in the copy paper 6a is selected and the copy paper is fed from the first copy paper loading section by the operation of the first copy paper feeding mechanism 10a, the copy paper 6a loaded in the The solenoid 7
It is important to start the operation of the first pair of conveying rollers 36 and the second pair of conveying rollers 38 early by energizing the rollers 6.

As described above, according to the copy paper supply device configured according to the present invention, the start of operation of the first pair of conveyance rollers 36 and the start of operation of the second pair of conveyance rollers 38 are controlled separately and independently. Therefore, the first copy paper loading section 2
Regardless of whether the copy paper is fed from either the copy paper loading section a or the second copy paper loading section 2b, both the required posture correction action and synchronization adjustment action are performed on the fed copy paper. That is clear.

To be sure, in the above description, the present invention will be described with reference to a copy paper supply device having two copy paper loading sections, the first copy paper loading section 2a and the second copy paper loading section 2b. Although described in detail, the present invention can also be applied to a copy paper feeding device having three or more copy paper loading sections. 3
In the case of a copy paper supply device having one or more copy paper loading sections, the copy paper is introduced into a common copy paper transport path for each of the three or more added copy paper loading sections. Along with adding a road,
A pair of conveyance rollers that are interlocked with the first and second pairs of conveyance rollers may be disposed in each of the copy paper introduction paths.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a specific example of a copy paper supply device constructed according to the present invention. Figure 2 shows
2 is a simplified diagram showing a transmission and control mechanism used in the copy paper feeding device shown in FIG. 1. FIG. 2a...first copy paper loading section, 2b...second copy paper loading section, 10a...first copy paper feeding mechanism, 10b...second copy paper feeding mechanism, 16a...
...First copy paper introduction path, 16b...Second copy paper introduction path, 30...Copy paper transport path, 36...First transport roller pair, 38...Second transport roller pair, 5
8...first detector, 62...second detector,
L ₁ ... copy paper path length between the first copy paper loading section and the first pair of transport rollers, L ₂ ... copy paper path length between the first pair of transport rollers and the second pair of transport rollers Paper path length, L ₃ . . . Copy paper path length between the second copy paper loading section and the second pair of transport rollers.

Claims (1)

[Claims for Utility Model Registration] A plurality of copy paper loading sections 2a, 2b loaded with sheet-like copy papers 6a, 6b in a stacked state, and a copying paper provided in each of the copy paper loading sections 2a, 2b. The paper feeding mechanisms 10a, 10b, the copy paper loading section 2a,
Copy paper introduction path 1 extending from each of 2b to the confluence point.
6a, 16b, the copy paper transport path 30 extending from the merging point, and each of the other copy paper transport paths 16a excluding one specific copy paper transport path 16b extending from one specific copy paper loading section 2b. a first pair of conveyance rollers 36 disposed at the merging point or a second pair of conveyance rollers 3 disposed at the upstream portion of the copy paper conveyance path 30;
8, and the first and second conveyor roller pair 36, 38
control mechanisms 72, 76, 7 for controlling the operation of
8, the first pair of conveying rollers 36 and the second pair of conveying rollers 38 are interlocked by interlocking mechanisms 82, 84, 86, and the specific one Compared to the case where the copy paper is fed from the copy paper loading section 2b, when the copy paper is fed from the other copy paper loading section 2a, the first conveying roller pair 36 is moved from the first conveying roller pair 36 to the second conveying roller. Copy paper supply characterized in that the control mechanism 72, 76, 78 starts the operation of the first and second transport roller pairs 36, 38 earlier by the copy paper transport time up to the pair 38. Device.