JPH09255173A - Picture information processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a picture information processor capable of setting feeding intervals for paper sheets to identical levels irrespective of the lengths of the paper sheets in a carrying direction. SOLUTION: A document 151 is set out through a document pad 147 and a document feed roll 148 and carried at a slightly faster speed by its next document rolls 156 and 157. For the document roll 148, the rotation of a rotary shaft 202 is transmitted via a gear box 214 and first to third rotation transmitting member 211 to 213. While the document 151 is commonly passed through the rolls 148, 156 and 157, the rotation transmitting members 211 to 213 make play for setting the interval of sending out a next document 151 and the gear box 214 absorbs unnecessary play by the idle rotation of a second gear 219. After the rear end of the document 151 is moved away from the roll 148, the rotary shaft 202 is rotated by an amount equivalent to the set play and then the motive power of the rotary shaft 202 is transmitted to the roll 148. Thus, sending intervals are maintained at constant levels.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image information processing apparatus such as a printer, a copying machine or a facsimile machine, and particularly, an original document or a recording sheet is conveyed one by one from the supply side thereof. The present invention relates to an image information processing device.

[0002]

[Prior art]

Generally, in an image information processing apparatus such as a copying machine, a cut sheet is often used as a document or a recording sheet. When setting multiple sheets of such cut paper (hereinafter simply referred to as paper) in the supply tray and automatically reading or recording images, set a gap between the paper sent from the supply tray. There is.

FIG. 16 shows an example of how a sheet is sent out from a supply tray. Supply tray 11
A sheet 12 of a predetermined size is stacked on the sheet, and a supply roll 13 is arranged in contact therewith. When the supply roll 13 is rotated in the direction of arrow 14, the uppermost sheet 12 is fed by this. On the outlet side of the supply tray 11, a transport roll (not shown) is arranged,
The fed-out sheet 12 is conveyed to a reading unit or a recording unit (not shown).

By the way, when the supply roll 13 is continuously rotated, the paper 12 is sent to the transport roll without interruption, and for example, it becomes impossible to perform image positioning processing and jam detection for each paper. Therefore, the supply roll 13 is rotated by a predetermined amount, and when the leading end of the paper 12 is sent to the transport roll, this rotation is stopped, and the supply roll 13 is rotated again at a predetermined timing to start transport of the next paper.

As described above, the supply roll 13 needs to be driven intermittently even in the situation where the paper 12 is continuously conveyed. Conventionally, an electromagnetic clutch is generally used to perform such control, and on / off control of the driving force transmitted to the supply roll 13 is performed. However, as described above, the supply roll 1 is manufactured by using the electric parts such as the electromagnetic clutch.
When the drive of No. 3 is controlled, there is a problem that the circuit configuration becomes complicated and the cost of the device increases. Therefore, Japanese Patent Laid-Open No. 4-243735 proposes that this control be performed mechanically.

FIG. 17 shows a main part of the configuration of the image information processing apparatus according to this proposal. In this figure, the same parts as those in FIG. 16 are designated by the same reference numerals, and the description thereof will be appropriately omitted. This figure shows a state in which the rotation of the supply roll 13 is stopped. Rotating shaft 13 of supply roll 13
A has a roll gear 21 and a one-way clutch 22.
Is attached. In the one-way clutch 22,
A projecting portion 23 is formed on the outer peripheral portion thereof. The roll gear 21 meshes with the drive gear 24. A clutch control mechanism 26 is arranged on the shaft of the drive gear 24.

The clutch control mechanism 26 includes a spring clutch (not shown) and a first clutch protruding from the drive gear 25.
The arm 27 and the second fixed to the arm 27 and protruding in the opposite direction
It is configured with the arm 28. The contact member 29 is fixed at a predetermined position within the range of the locus drawn by the rotation of the first arm 27. The tip of the second arm 28 is in contact with the protrusion 23 of the one-way clutch 22. Further, the drive gear 24 meshes with the intermediate gear 30. The intermediate gear 30 meshes with the small gear of the two-stage gear 31.
The large gear of the two-stage gear 31 is a drive motor 3 that can rotate in the forward and reverse directions.
It meshes with the second motor gear 33.

The rotation of the supply roll 13 and its stop will be described below. When the rotation shaft of the drive motor 32 rotates clockwise, the drive gear 24 rotates counterclockwise via the motor gear 33, the two-stage gear 31, and the intermediate gear 30. As a result, the action of the spring clutch of the clutch control mechanism 26 causes the first and second arms 27 and 28 to rotate counterclockwise, and the first arm 27 comes into contact with the contact member 29.
The second arm 28 is the protrusion 23 of the one-way clutch 22.
Move away from Next, when the rotation shaft of the drive motor 32 rotates counterclockwise, the drive gear 24 rotates clockwise, and the roll gear 21 and the one-way clutch 22 rotate counterclockwise. As a result, the supply roll 13 starts to rotate. Further, the rotation of the drive gear 24 causes the arms 27 and 28 to rotate clockwise until the second arm 28 comes into contact with the outer peripheral surface of the one-way clutch 22. After that, when the tip of the second arm 28 comes into contact with the protrusion 23 of the one-way clutch 22, the rotation of the supply roll 13 is stopped.

As described above, the proposed image information processing apparatus does not require an electric circuit and electric parts controlled by the electric circuit, but a one-way clutch 22 for transmitting a driving force to the supply roll 13 and a clutch having a spring clutch. The control mechanism 26 is newly required, and further,
The drive motor 32 also needs to be able to rotate forward and backward. Therefore, this device has a complicated mechanical structure, which is a problem in reducing the size of the image information processing device.

Therefore, there has been proposed an image information processing apparatus having a simple paper supply mechanism capable of intermittently driving the supply roll.

FIG. 18 is a view for explaining a mechanism for intermittently driving the document supply roll so that the document is conveyed at a predetermined interval. A pair of document conveying rolls 42 and 43 is arranged on the document discharge side of the document supply roll 41. The manuscripts 45 are separated by the manuscript pad 44 and the manuscript supply roll 41, and are sent out one by one with an interval. The fed document 45 passes between the document transport rolls 42 and 43, as indicated by a chain double-dashed line.

The original supply roll 41 is a cylindrical roll 47.
And a rotary shaft 48 that rotatably supports the shaft. The rotating shaft 48 is rotationally driven at a constant speed by a motor (not shown). On the rotary shaft 48, first to third rotation transmitting members 55 to 57, which are resin integrally-molded products and sequentially have arc-shaped projections 51 to 54 having the same radius, are arranged in series. There is. These rotation transmission members 55 to 57 collectively constitute a drive transmission system having two-stage play (idling angle) with respect to the rotation angle.

The first rotation transmitting member 55 is rotatably supported by a rotating shaft 48 like the roll 47.
The first rotation transmission member 55 has its opposite surface adhered to the roll 47. Depending on the device, a cylindrical rubber roll may be fitted on the surface of the cylindrical first rotation transmitting member 55 that is slightly longer than the length of the roll 48 to form an integrated roll. On the other end surface of the first rotation transmission member 55, a first projection 51 having the same radius as the cylindrical surface and a predetermined arc length is arranged.

The second rotation transmitting member 56 is the same as or symmetrical to the first protrusion 51 of the first rotation transmitting member 55 on both end faces of the cylindrical main body portion having the same radius as the first rotation transmitting member 55. The second and third protrusions 52 and 53 each having a shaped shape are projected. This second rotation transmission member 5
6 is also rotatably supported by a rotary shaft 48 like the roll 47.

The third rotation transmitting member 57 includes the first and second
The fourth protrusion 5 is formed on the end surface of the cylindrical main body portion having the same radius as the rotation transmission members 55, 56 of the second rotation transmission member 56 side.
4 has a protruding shape. With this proposal, each protrusion 5
The arc lengths 1 to 54 and the radii forming the arcs are the same. The third rotation transmission member 57 is fixed to the rotation shaft 48.

The manner in which the document 45 is conveyed by the document supply roll 41 having such a structure and the drive transmission system will be described. Since the manuscript pad 44 is pressed against the manuscript supply roll 41, the roll 47 remains stationary under the condition that no external force is exerted. In this state, it is assumed that the rotary shaft 48 continuously starts rotating in the direction of arrow 59 for continuous reading of the document. When the rotating shaft 48 starts rotating, the third
The rotation transmitting member 57 also rotates with this, and the fourth protrusion 5
Rotate 4 on the circumference. At this time, the first and second rotation transmitting members 55 and 56 are stationary, and the document supply roll 41 is still stationary.

At some point as a result of the fourth protrusion 54 rotating on an arc, it engages the third protrusion 53. From this point, the second rotation transmission member 21 starts to rotate in the direction of arrow 59 while being pushed by the fourth protrusion 54. At the same time, the second protrusion 52 starts to rotate on the circumference. As a result of this, at some later point in time, the second protrusion 52 is replaced by the first protrusion 5.
Engage with 1. At the same time, the first rotation transmitting member 55 is moved by the arrow 5 so that the first protrusion 51 is pushed by the second protrusion 52.
Start rotation in 9 directions. Since the first rotation transmitting member 55 is fixed to the roll 47, the roll 4
7 starts rotating in the direction of arrow 59. At the same time, the original 45 is transferred to the original pad 44 and the original supply roll 41.
By the action of, the conveyance of only one sheet is started. This manuscript 4
The sheet 5 reaches between the document transport rolls 42 and 43, and thereafter, it is transported toward the image sensor unit (not shown) at a constant speed.

By the way, the original 4 by the original supply roll 41
The rotation speed is set so that the conveyance speed of No. 5 is slower than that of the original conveyance rolls 42 and 43 by a predetermined amount. Therefore, the document 45 is fed by the document transport rolls 42, 4.
When the sheet is conveyed up to the interval 3, the conveying speed thereafter increases by the difference between the two conveying speeds. This is because the roll 47 is rotatably arranged with respect to the rotation shaft 48, so that the roll 47 rotates together with the movement of the document 45. However, since the rotation of the roll 47 due to this becomes faster than that of the third rotation transmission member 57, the first and second protrusions 51 and 52 which have been in contact with each other until now are separated, and the difference in rotational speed is caused. Only the first protrusion starts to rotate faster than the second protrusion 52.

As a result, after a lapse of a predetermined time, the end of the first protrusion 51 on the side which has not been contacted until now catches up with the end of the second protrusion 52 on the side which has not been contacted until now. This is pressed at the rotational speed of the difference. Then, the second rotation transmission member 56 increases the rotation speed of the roll 47 to the same speed. As a result, the third and fourth protrusions 53 and 54, which have been in contact with each other until now, are separated. Then, after another predetermined time elapses, the end of the third protrusion 53 on the side not in contact until now catches up with the end of the fourth protrusion 54 on the side not in contact until now. Press at the rotational speed of the difference. At this point or when a predetermined time has passed from this point, the feeding of the original 45 being fed by the original feeding roll 41 is completed.

Then, the roll 47, which has been rotating together with the original 45, does not receive this rotational force.
The rotating shaft 48 continues to rotate even at this point. However, the first to fourth projections 51 to 54 are in the opposite engagement relationship at this point. For this reason, the rotating shaft 4
Even when 8 rotates, the roll 47 remains stationary until the roll 47 returns to the engaging relationship in which the roll 47 first started rotating.
During this time, the document transport rolls 42 and 43 continue to transport the original document 45. Therefore, the conveyance interval is set between the two originals 45 by the conveyance distance of the original conveyance rolls 42 and 43 corresponding to this time until the conveyance of the second original 45 is started. Become.

This interval is equal to the first to fourth projections 51 to 54.
Of the second rotation transmission member 56 existing between the first and third rotation transmission members 55 and 57 (one in the case of holding) from zero to an arbitrary integer value. It is possible to adjust by changing up to. In this proposal, between the first and second rotation transmitting members 55 and 56,
By providing a predetermined play regarding the rotation angle at two places between the second and third rotation transmitting members 56 and 57, a play with a desired angle larger than 360 degrees is realized as a whole.

[0023]

In the proposal shown in FIG. 18, it is possible to set a desired interval between sheets by a simple mechanism when conveying sheets of the same size such as A4 size. It has the excellent feature that it can be done. However, according to the proposed mechanism, the next document is fed to the document feed roll 4 according to the length of time that the document 45 is simultaneously fed to the document feed roll 41 and the document feed rolls 42 and 43.
The interval before being sent by 1 is set. Therefore, if the image information processing device has a predetermined
If it is assumed that only types of originals are handled, the intervals between the originals 45 are constant, and the difference in peripheral speed between the original supply roll 41 and the original conveying rolls 42, 43 can be set to a desired value in advance. For example, the interval between the originals 45 can be set ideally.

However, depending on the image information processing apparatus, the originals 45 of various sizes are often handled. In such a case, depending on the length of the document 45 in the transport direction, the document 4
The intervals between 5 differ. Therefore, for example, if the conveyance interval is set to an appropriate value for the document 45 of the shortest size in the conveyance direction, the interval of the document 45 of the long size is set to be longer than necessary. There is a problem that the reading interval of the original becomes unnecessarily long. Further, when a document is read by this image information processing apparatus, a considerably long document may be read. In such a case, it takes many seconds from the time the original supply roll 41 sends out the original 45 to the start of the next original 45.

Therefore, when the image information processing apparatus is performing the function as a facsimile apparatus, the original 45 is sent on the side of the apparatus although the original still exists. Since it takes a long time until the next original 45 is sent, it is erroneously recognized that all the originals have been read. As a result, the communication is cut off before the next original 45 is started to be sent out, and eventually, the long original 45 can be transmitted only one by one.

Although the problem of the document transportation has been described above, it goes without saying that the same problem also occurs in the sheet transportation.

Therefore, an object of the present invention is to provide an image information processing apparatus in which even a long sheet of paper can be prevented from becoming too long by a simple mechanism.

Another object of the present invention is to provide an image information processing apparatus capable of uniforming the feeding intervals between these sheets regardless of whether they are long sheets or not.

[0029]

According to a first aspect of the invention, (a) a sheet conveying roller for conveying a sheet at a predetermined conveying speed, and (b) a sheet having a predetermined length longer than the sheet conveying roller. A feed roller which is arranged at a position returned to the feeding side of the sheet feeding device for feeding the sheet to the sheet feeding roller, and
Between the feed roller drive means for rotating the paper feed roller connected to the feed roller at a predetermined peripheral speed lower than the peripheral speed of the paper feed roller, and (d) between the feed roller drive means and the feed roller. When the arranged paper is conveyed by both rollers at the same time and the peripheral speed of the feed roller is slower than the peripheral speed of the paper convey roller, the feed roller drive means and the feed roller are disconnected, and the rear end of the paper is fed. Transmission start delay means for delaying the time for starting transmission of the rotational driving force of the feed roller drive means to the feed roller in proportion to the time when the paper is being conveyed by both rollers at the same time when the rollers are removed; (E) When the transmission start time by the transmission start delay means becomes longer than a preset time, the transmission start delay time is limited to the preset time. To and a limiting means to image information processing apparatus.

That is, according to the first aspect of the present invention, the feed roller is arranged upstream of the paper feed roller for feeding the original and the recording paper, and the feed roller feeds the paper one by one to the paper feed roller. In this image information processing apparatus, the peripheral speed of the paper transport roller is set to be higher than the peripheral speed of the feed roller. The feed roller drive means is configured not to transmit the rotational force when the feed roller is entrained by the paper conveyance roller through the paper, and when the trailing edge of the paper leaves the feed roller, the transmission start delay means is used. The time until the transmission of the rotational driving force of the feed roller driving means to the feed roller is started is delayed by mechanical play or the like in proportion to the time that the feed roller has been rotated by the paper. . However, this delay time is limited by the transmission start delay time limiting means. Therefore, even if the transmission start delay time may be unnecessarily long for a long sheet, this can be limited to a predetermined time,
The above-mentioned object can be achieved by appropriately setting the interval until the next sheet is fed.

According to the second aspect of the present invention, (a) a sheet conveying roller for conveying the sheet, and (b) a sheet conveying roller which is arranged at a position which is a predetermined distance back from the sheet conveying roller to the sheet feeding side. A feed roller for feeding the paper to the paper transport roller; and (c) a feed roller drive means for rotating the paper at a predetermined peripheral speed lower than the peripheral speed of the paper transport roller while being connected to the feed roller. (D) a first gear rotated by the feed roller driving means, and (e)
A second gear that meshes with this first gear and rotates with this rotation
Gears, (g) gear fittings that rotatably hold the respective rotation shafts of the first and second gears with a predetermined gap, and (g) mesh with the second gear for a predetermined length. The meshing portion, the stopper portion that prevents the second gear from moving outside of the meshing portion at one end of the meshing portion, and the second gear that moves outside of the other end of the meshing portion. The toothed member having a meshing release portion that releases the meshing state with the meshing portion and frees its rotation in the above state, and (h) the second gear that is arranged integrally with the toothed member and is free. Abutting against the gear fitting when moving relative to the toothed member by a predetermined length or more, and rotating the second gear and the toothed member as a unit while applying a force in this moving direction. And an image information processing device.

That is, according to the second aspect of the present invention, the feed roller is arranged on the upstream side of the paper feed roller for feeding the document or the recording paper, and the feed roller feeds the paper one by one to the paper feed roller. In this image information processing apparatus, the peripheral speed of the paper transport roller is set to be higher than the peripheral speed of the feed roller. Then, when the paper feed roller is entrained through the paper by the paper feed roller, that is, when the feed roller clock is rotated rather than the original rotation of the feed roller, the first gear connected to the feed roller drive means is moved. The second gear is moved to a free state with respect to the toothed member so that the gear attachment is brought into contact with the contact member. When this state is entered, when the trailing edge of the sheet is then released from the feed roller and the accompanying state is released,
The gear of (1) again meshes with the toothed member and advances to the position of the stopper portion, and the feed roller does not feed the next sheet for the time required until the feed roller is connected to the feed roller drive means. That is, it is possible to set the interval until the next sheet is conveyed by this time. In addition, the free state of the second gear absorbs the difference in the length of the sheet in the conveying direction, which may cause the transmission start delay time to be unnecessarily long for a long sheet. However, this can be limited to a predetermined time, and the above-described object can be achieved by appropriately setting the interval until the next sheet is fed.

According to the third aspect of the present invention, (a) a sheet conveying roller for conveying the sheet, and (b) a sheet conveying roller which is arranged at a position which is a predetermined length back from the sheet conveying roller to the sheet feeding side. A feed roller for feeding the paper to the paper transport roller; and (c) a feed roller drive means for rotating the paper at a predetermined peripheral speed lower than the peripheral speed of the paper transport roller while being connected to the feed roller. (D) a first gear rotated by the feed roller driving means, and (e)
A second gear that meshes with this first gear and rotates with this rotation
Gears, (g) gear fittings that rotatably hold the respective rotation shafts of the first and second gears with a predetermined gap, and (g) mesh with the second gear for a predetermined length. The meshing portion, the stopper portion that prevents the second gear from moving outside of the meshing portion at one end of the meshing portion, and the second gear that moves outside of the other end of the meshing portion. The toothed member having a meshing release portion that releases the meshing state with the meshing portion and frees its rotation in the above state, and (h) the second gear that is arranged integrally with the toothed member and is free. Abutting against the gear fitting when moving relative to the toothed member by a predetermined length or more, and rotating the second gear and the toothed member as a unit while applying a force in this moving direction. The paper transport roller is placed between the member and the (li) toothed member and the feed roller. Image information processing between the feed roller drive means and the toothed member drive force transmission control mechanism for intermittently controlling the transmission of the rotational drive force between the feed roller drive means and the toothed member by the difference in rotational speed between the feed roller and the feed roller. Prepare for the device.

That is, in the third aspect of the invention, in addition to the configuration of the second aspect of the invention, the drive roller drive means,
A drive force transmission control mechanism between the toothed members is provided. This control mechanism is set in order to increase the time required for the feed roller to be connected to the feed roller driving means when the accompanying rotation state is released, depending on the difference in the peripheral speeds of the feed roller and the paper transport roller. It That is, this makes it possible to set the interval between the sheets to a certain extent. Such a gap adjustment can be achieved to some extent, for example, by varying the time interval until the contact member and the gear fitting come into contact with each other depending on the location of the contact member. In some cases, it is effective to install the driving means for the feed roller and the driving force transmission control mechanism between the toothed members. Of course, depending on the image information processing apparatus, it is possible to omit the driving means for the feed roller and the driving force transmission control mechanism between the toothed members.

According to a fourth aspect of the invention, the image information processing apparatus according to the third aspect is characterized in that a plurality of second gears, toothed members and contact members are arranged. By providing a plurality of power transmission mechanisms in this way, the power can be dispersed and transmitted, and a larger torque can be transmitted.

According to the fifth aspect of the present invention, (a) a first tray for inclining obliquely upward to accommodate discharged sheets of the first system, and (b) above the first tray. A second tray in which the upper portion of the discharged second system sheet is leaned against the upper tray portion of the first tray and only the lower portion is accommodated; and (c) the lower portion of this second tray. Is arranged so as to protrude with respect to the path through which the paper of the first system is discharged to the first tray.
The image information processing apparatus is provided with a guide member for restricting the upward movement of the system paper.

That is, according to the invention of claim 5, in an image information processing apparatus in which the lower tray of the two trays also serves as the upper tray, when a plurality of sheets are stacked on the upper tray. This eliminates the problem that the paper ejected to the lower tray is difficult to eject due to the pressure on the paper of the upper tray, and the tip of the paper ejected to the lower tray pushes the paper of the upper tray. The guide member limits the width of the loop formed in the vertical direction when moving in a divided manner. As a result, the width of the loop in the vertical direction becomes smaller, and the stiffness of the paper becomes relatively stronger, preventing the paper from bending due to the so-called "just stiffening" phenomenon and pushing the paper in the upper tray apart. The paper will be ejected smoothly to the lower tray.

[0038]

BEST MODE FOR CARRYING OUT THE INVENTION

[0039]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments.

FIG. 1 shows an external appearance of an image information processing apparatus according to an embodiment of the present invention when it is used. In the image information processing apparatus 100, a recording paper supply tray 102 is arranged in the upper back side of the apparatus main body 101 in a state of being obliquely inclined outward. An auxiliary supply tray 103 is arranged above the recording paper supply tray 102 so as to be pulled out upward, and a paper support rod 104 is rotatably arranged at one upper end of the auxiliary supply tray 103. The auxiliary supply tray 103 and the paper support rod 104 are used to support the upper part of the recording paper set in the recording paper supply tray 102 according to the length thereof.

On the front side of the upper part of the image information processing apparatus 100 in FIG.
It is arranged in a state of being inclined outward so as to be substantially symmetrical to 02. Both the recording paper supply tray 102 and the recording paper discharge tray 106 can be opened and closed in consideration of transportation and nonuse.

FIG. 2 shows a state in which the recording paper discharge tray of this image information processing apparatus is closed. When the recording paper discharge tray 106 is closed, the document discharge tray 115 (not shown) disposed inside the apparatus (see FIG.
See also). The image information processing apparatus 100 can be used even when these trays on the discharge side are closed. When the image is read in this state, the read original is discharged from the upper portion of the discharge port 108, and the recording sheet on which the recording has been performed is discharged from the lower portion. By not using the tray on the discharge side like this,
It is possible to further reduce the installation space of the image information processing device 100.

Returning to FIG. 1, the description will be continued. In the image information processing apparatus 101, the recording paper is held by being supported by the recording paper supply tray 102, the auxiliary supply tray 103, and the paper support rod 104, and the recording paper not shown in the figure is provided on the left and right. A pair of recording paper guides 10
9 is used for positioning in the width direction. When recording is started, the held recording sheets are fed one by one into the apparatus main body 101 to perform recording. Then, the recording sheet for which recording has been completed is recorded sheet discharge tray 1
It is discharged to 06 or discharged from the discharge port 108 to the outside.

A reading unit is arranged on the recording unit having a V-shaped conveying path as a whole. A pair of document guides 113 for holding a document (not shown in the drawing) according to the length in the width direction are slidably arranged in the width direction on the document supply tray 111 constituting the reading unit. ing. In the case of an original long in the length direction (original conveying direction), the leading edge of the original is supported by the recording paper supply tray 102, the auxiliary supply tray 103, or the paper support rod 104, or the recording paper held by these is not supported. The original will be held.

The original is read by a one-dimensional image sensor (not shown) in the apparatus main body 101, and the recording paper discharge tray 1
The document is discharged onto the document discharge tray 115 arranged on the upper part 06 of a relatively short length. As shown in FIG. 1, the document discharge tray 115 is adapted to open when the recording paper discharge tray 106 is opened. Document output tray 1
Since the length of 15 is short, when the length of the document is relatively long, the leading end of the document is discharged so as to lean against the recording paper discharge tray 106 or the recording paper discharged thereabove. Has become. The conveyance path from the supply of the original document to the discharge thereof is converged on the both ends of the conveyance path so that they coincide with the conveyance path of the recording sheet. Even if the original and the recording paper are accommodated in the same tray at the leading edge, the trailing edge is accommodated in the different trays 115 and 106, respectively, so that the sorting is surely performed and the same tray is completely shared. If you do, the problem does not occur. The same applies to the original and recording paper supply side. That is, although the image information processing apparatus 100 of the present embodiment is used in such a manner that the upper side of the tray is shared between the document supply side and the document discharge side, the respective documents or recording sheets are securely stacked and accommodated. Since the documents are sorted and sorted, it is possible to sufficiently deal with the case where a large number of documents and recording sheets are used.

FIG. 3 is a side view of the image information processing apparatus of this embodiment. As described with reference to FIG. 1, a supply-side tray including a recording paper supply tray 102 and an auxiliary supply tray 103 and a recording paper discharge tray 106 are arranged on the upper part of the apparatus main body so as to form a V shape as a whole. An auxiliary discharge tray 121 is arranged above the recording paper discharge tray 106 so as to be openable and closable. In FIG. 1, the auxiliary discharge tray 121 is in a closed state and is not shown. The image information processing apparatus 100 is provided with a recording paper feed path 102 and a recording paper feed path 122 indicated by a chain double-dashed line extending from the auxiliary supply tray 103 to the recording paper discharge tray 106. I am in a shape. In addition, the recording paper supply tray 10
2. A document conveying path 123 indicated by a two-dot chain line extending from the auxiliary supply tray 103 to the recording sheet discharge tray 106 via the document supply tray 111 and the document discharge tray 115 is arranged. The document discharge tray 115 has a U shape as a whole.

The recording sheet conveying path 122 is a path for feeding the recording sheet to the recording section 124 for recording an image and discharging the image. The recording unit 124 is a replaceable cartridge. A laser scanning unit 125 is arranged at the bottom of the apparatus main body 101, and a laser beam is modulated according to an image signal processed by an image processing unit 126 arranged at the side of the apparatus. Image processing unit 126
The image signal to be processed may be obtained by the reading unit or may be sent from an image information source such as a personal computer connected via a connection cable (not shown). In addition, this image information processing device 10
When 0 is equipped with a floppy disk or an optical disk reader, the image signal read by this may be processed. Since the image information processing apparatus 100 includes the reading unit, the image signal read by the image processing apparatus 100 can be transmitted to another device via the image processing unit 126 or stored in a predetermined storage medium. .

The laser beam modulated by the image processing unit 126 is deflected by a polygon mirror (not shown) in the laser scanning unit 125, reflected by the mirror 125A, and its optical path is changed substantially upward, and the recording unit 124 is recorded.
The surface of the photosensitive drum 128 inside is scanned. Around the photosensitive drum 128, a charging roll 129 and a developing device 130.
And the transfer roll 131 is arranged. The charging roll 129 uniformly charges the surface of the photoconductor drum, and a laser beam is applied onto the surface of the photoconductor drum to form an electrostatic latent image. This electrostatic latent image is developed by the developing device 130 to form a toner image. The toner image is transferred onto the recording paper by the transfer roll 131.

Recording unit 12 in recording paper transport path 122
A supply roll 133 for supplying recording paper to the recording paper is arranged on the front side of the recording paper No. 4. At a position opposed to the supply roll 133, a push-up plate 134 and a paper feed table 135 for positioning the recording paper portion below the recording paper supply tray 102 are arranged. The push-up plate 134 is a plate that is rotatable around the upper part thereof, and has a function of pressing the lower part of the recording paper against the surface of the supply roll 133 by a spring 136 disposed between the lower back surface and the paper feed table 135. There is. The surface of the paper feed tray 135 facing the lowermost end of the push-up plate 134 forms a step, and this portion holds the lower end of the recording paper.

FIG. 4 is an enlarged view of the principle of the vicinity of the supply roll and the paper feed table. Layered recording paper 1
37 is a feed roll 1 whose uppermost layer is a push-up plate 134.
It is pressed by 33. A recording paper separation pad 138 is arranged at a part of the stepped portion of the paper feed table 135, and this part has a habit of being pressed toward the supply roll 133 by the spring 141. Therefore, at a predetermined timing, the supply roll 133 starts rotating in the direction of the arrow 139 and the recording paper 137 is fed out. At this time, even if double feeding of the recording paper 137 is likely to occur, the recording paper separation pad 138 is placed on the lower side. Since the feeding of the recording paper 137 is blocked, the occurrence of double feeding can be prevented. Moreover, since the recording paper 137 is fed out at a predetermined angle while the recording paper 137 is set on the supply side tray component such as the recording paper supply tray 102, the arrangement of the recording paper supply tray 102 should be set at a steep angle. It is possible to save the arrangement space in the tray portion on the supply side.

Returning to FIG. 3, the description of the periphery of the recording paper conveyance path will be continued. A fixing device 143 that fixes the toner image and a discharge roll 144 that discharges the fixed recording paper to the recording paper discharge tray 106 are disposed behind the recording unit 124 (on the exit side). When the recording paper discharge tray 106 is opened as shown in FIG.
4, the recording paper 137 (FIG. 4) is ejected to it. Immediately below the recording paper discharge tray 106, a discharge lower tray 145 is arranged so as to be continuous therebelow. The discharge lower tray 145 is for holding the lower portion of the recording paper accommodated in the recording paper discharge tray 106 in the opened state as shown in FIG.

Next, the document transport path 123 will be described. The original set on the original supply tray 111 includes an original supply roll 148 arranged above the supply roll 133 in the apparatus main body 101 and an original pad 147 in contact with the original supply roll 148.
The tip is located at this contact portion of the. The manuscript pad 147 also has a role of preventing double feeding when a plurality of manuscripts are set, and is made of a rubber material.

FIG. 5 shows a state in which a document before being read is set in the apparatus. In this figure, in order to avoid complication, the front side of the pair of document guides 113 is removed. The sheet-shaped document 151 is set in the image information processing apparatus 100 with its width direction positioned such that the portions located on the lower sides of both sides thereof are sandwiched by the document guides 113. This is to prevent the document 151 from being skewed (obliquely fed). In addition to preventing the occurrence of jams (paper jams), image information may be missing in the entire width in the width direction when read by the image sensor. Needed to be read without. When the document 151 is sandwiched by the document guides 113 and set, the leading end of the document 151 is naturally positioned at a position where the document supply roll 148 and the document pad 147 are in contact with each other. The document 151 has a structure in which a relatively lower portion thereof is held by a vertical gap between the document guide 113 and a relatively short length of the document guide 113 in the transport path direction.

Therefore, when the length of the original 151 is relatively long, the leading end of the original 151 is arranged so as to lean on the uppermost layer of the recording paper 137 (FIG. 4) accommodated in the recording paper supply tray 102. . Further, when no recording sheet 137 is set, the upper portion of the original 151 is set directly on the supply tray such as the recording sheet supply tray 102. Original 1 as shown in FIG.
By making the conveyance path 123 of 51 and the recording paper conveyance path 122 of the recording paper 137 (FIG. 4) common at the end, compared with the case where these trays are arranged in double, the entire image information processing apparatus 100 It is being miniaturized. The reason why the space between the document guide 113 and the document supply tray 111 is wide on the entrance side is to facilitate the insertion of the document 151.

As shown in FIG. 5, the document 151 set in the image information processing apparatus 100 includes an upper chute 152 arranged above the document supply roll 148 and a lower chute arranged below the upper chute 152 with a slight gap therebetween. Vertical movement is restricted by the two plate-shaped components 153, and the lowermost one sheet is in contact with the surface of the document supply roll 148.
In the state where the document 151 is read, the document supply roll 148 rotates in the direction of arrow 155 at a predetermined timing. When a plurality of originals 151 are set, not only the lowermost original 151 in contact with the original supply roll 148 but also other originals 151 may be sent along with this.

In order to prevent this, in the present embodiment, the original supply roll 148 is brought into contact with the original pad 147 having an inverted V-shaped cross section. A plurality of originals 151 are inclined toward the entrance side of the original pad 147, and the upper ones are kept on the upstream side of the transport path 123 (FIG. 3). This allows
The document 151 in the lowermost layer is easily fed in order. Further, for example, even if two originals 151 are simultaneously sent out,
Since the upper document directly contacts the stationary document pad 147 and receives frictional resistance, only the lower document 151 is eventually sent out.

Returning to FIG. 3, the description will be continued on the document transport path passing through the reading section. The original 151 delivered by the original supply roll 148 is a pair of original conveying rolls 15.
It passes through 6, 157 and is transported at a constant speed. An image sensor unit 158 is provided on the downstream side of the document conveying rolls 156 and 157.
And the platen roll 1 that rolls on the platen part above
59 is arranged, and a pair of document discharge rolls 161 and 162 are further arranged at a predetermined interval. The document discharge rolls 161 and 162 are rolls for discharging the document 151 to the document discharge tray 115.

By the way, the conveyance path 123 of the original 151 after passing the original supply roll 148 is provided with the original discharge tray 1
It is almost horizontal up to 15. Therefore, the document 151 delivered from the document supply roll 148 is conveyed in sliding contact with the platen of the image sensor unit 158 in a substantially flat state, and the image is read. The image sensor unit 158 of the present embodiment is one in which a one-dimensional image sensor is arranged under a flat plate-shaped transparent platen through a collective optical system, and an image of a slit-shaped portion illuminated by a built-in light source. Are sequentially read line by line by a one-dimensional image sensor.

For convenience of explanation, FIG. 6 shows a state in which the upper cover portion of the image information processing apparatus of this embodiment is removed. In this figure, the internal structure is shown with the outer case of the upper cover portion 171 and the top cover portion of the upper part of the apparatus main body 101 appropriately seen through. The upper cover portion 171 has pivots 172 (only one is shown in the drawing) vertically protruding from the side portions thereof fitted into holes (not shown) of the lower chute 153, and has a structure in which the pivots 172 can be opened and closed freely. Has become. This is because the original 151 is removed when it is jammed (paper jam), and the platen 15 placed above the image sensor unit 158.
This is for the convenience of cleaning 8A. For example, when a jam occurs, the operator releases the latch mechanism (not shown) to open the upper cover 171 and remove the original 151. Of course, the upper cover part 171 itself may be detachable.

The upper cover portion 171 is provided with an upper chute 152 which is bent into a predetermined shape in order to regulate the posture of the document 151 to be conveyed, and from an opening 164 formed at the center of the upper portion of the upper chute 152. A document pad 147 fixed to the spring member 165 projects downward. When the upper cover portion 171 is closed, the original pad 147 is
However, it comes into contact with the document supply roll 148 indicated by a broken line in the lower part of the figure with a predetermined pressure.

Upper chute 152 of upper cover 171
Two parallel spring members 174 and 175 are fixed to the convex portion of the document, and a document feeding roll 156 and a document discharging roll 162 are rotatably arranged at the ends thereof. The platen roll 159 arranged so as to be housed inside the convex portion of the upper chute 152 is provided in the upper cover portion 17.
In the state in which 1 is closed, the platen 158A is brought into contact with the platen 158A of the image sensor unit 158. Platen roll 15
The gear 177 attached to the rotary shaft 9 of the gear 9 meshes with the gear 178 of the document feeding roll 157 provided below, so that the power transmitted from the motor (not shown) to the rotary shaft of the document supply roll 148 is transmitted. Gears 179 and 181
To be communicated. The drive side of the document discharge roll 161 is also adapted to receive this power transmission via the toothed belt 183 at a predetermined gear ratio. As shown in FIG. 6, the pair of document guides 113 is
The document supply tray 111 is slidable along a total of four slits 185 provided in the width direction of the document 151.

FIG. 7 corresponds to FIG. 18 and shows the intermittent drive mechanism of the document supply roll in this embodiment. A pair of document conveying rolls 156 and 157 is arranged on the document discharge side of the document supply roll 148. The document 151 is formed by the document pad 147 and the document supply roll 148.
Are separated and sent one by one at intervals.
The fed original 151 passes between the original conveying rolls 156 and 157 as indicated by a chain double-dashed line.

The original supply roll 148 is a cylindrical roll 2.
01 and a rotating shaft 202 that rotatably supports the rotating shaft 202. The rotary shaft 202 is rotationally driven at a constant speed by a motor (not shown). The rotary shaft 202 is a resin integrally-molded product in which first to third rotation transmitting members 211 to 213 and arc gear-shaped projections 204 to 207 having the same radius in order and a gear box 214 are connected in series. It is located in. The rotation transmitting members 211 to 213 have a rotation angle of 2 as a whole.
A drive transmission system having a stage play (angle of idle) is configured.

The first rotation transmitting member 211 is the roll 20.
Similarly to the No. 1, the rotary shaft 202 is rotatably supported. The first rotation transmission member 211 has its opposite surface adhered to the roll 201. Roll 2 depending on the device
By fitting a cylindrical rubber roll on the surface of the cylindrical first rotation transmitting member 211, which is slightly longer than 01,
You may comprise the integrated roll. On the other end surface of the first rotation transmission member 211, a first protrusion 204 having the same radius as the cylindrical surface and a predetermined arc length is arranged.

The second rotation transmitting member 212 is the same as or symmetrical to the first protrusion 204 of the first rotation transmitting member 211 on both end faces of the cylindrical main body portion having the same radius as the first rotation transmitting member 211. Second and third protrusions 20 shaped
It has a shape in which 5, 206 are projected. The second rotation transmission member 212 is also rotatably supported by the rotation shaft 202 similarly to the document supply roll 148.

The third rotation transmitting member 213 has a fourth portion on the end face on the second rotation transmitting member 212 side of the cylindrical main body portion having the same radius as the first and second rotation transmitting members 211 and 212.
The projection 207 has a shape protruding. Each protrusion 2
The arc lengths of 04 to 207 and the radii forming the arcs are the same. The third rotation transmitting member 213 is the gear box 2
It is fixed to the opposing end faces of 14.

The main body 216 of the gear box 214 has the same shape as that of a cylindrical cup laid sideways, and one end (left side in the figure) of the cylinder 216A has a plate-like member 216.
It has a shape in which it is closed by B and the other end (right side in the figure) is opened. A rotary shaft 202 is rotatably pierced through a central position of the plate-shaped member 216B of the main body 216, and a surface of the main body 216 facing the third rotation transmission member 213 is adhered to the rotation shaft 202. Of course, the body 216 of the gear box
May be formed integrally with the rotation transmission member 213 by resin such as plastic. The first rotating shaft 202 is inserted into the main body 216 of the gear box and rotates integrally therewith.
Gear 217, and the first gear 217 and the cylinder 21.
A second gear 219 meshing with a transmission gear 218 carved on the inner wall of 6A is arranged. A stopper 221 projects at a predetermined position on the surface of the plate-shaped member 216B opposite to the rotation transmission member 213. The stopper 221 is configured to prevent movement of a gear connecting member not shown in this figure.

FIG. 8 shows one state of arrangement of each part in the gear box. The rotating shaft 202 of the first gear 217 and the rotating shaft 231 of the second gear 219 are axially supported by the gear connecting member 232 shown by a broken line, and the second gear 219 may be disengaged from the transmission gear 218. Even if there is, the positional relationship between them is kept constant. The transmission gear 218 constitutes a left half region in the drawing of the inner wall of the cylinder 216A having a partially thickened wall, and the remaining inner wall portion 234 having a uniform wall thickness is not toothed. For this reason, the rotary shaft 202 and the first gear 217 are locked by the arrow 23.
When rotated counterclockwise as indicated by 5, the second gear 2
19 rotates in the clockwise direction, and finally its teeth ride on the inner wall portion 234 having a uniform wall thickness to prevent the rotation. From this point, the main body 216 of the gear box starts rotating counterclockwise as the rotary shaft 202 rotates.

Further, the main body 216 of the gear box rotates in the same direction faster than the rotation of the rotary shaft 202, and the rotary shaft 2
When 02 rotates in the clockwise direction relative to the main body 216 of the gear box, the second gear 219 rotates in the counterclockwise direction relatively, and eventually the second gear 2 moves.
19 terminates the meshing relationship with the transmission gear 218 and becomes free. Then, if such a rotational relationship continues for a predetermined time, as shown in FIG. 9, the gear connecting member 23
The side end of 2 contacts the stopper 221. From this point of time, the main body 216 of the gear box rotates exactly in synchronization with the rotation of the rotary shaft 202.

The manner in which the original 151 is conveyed by the original supply roll 148 having this structure and the drive transmission system will be described. A document pad 147 is pressed against the document supply roll 148. Therefore, the document supply roll 148 is in a stationary state when no external force is exerted. In this state, it is assumed that the rotary shaft 202 continuously starts rotating in the direction of the arrow 235 for continuous reading of the document. When the rotary shaft 202 starts rotating, the second gear 219 rotates clockwise with respect to the transmission gear 218 that is being stopped as described with reference to FIG.
Riding on 34 is blocked. From this point, the main body 216 of the gear box starts rotating counterclockwise with the rotation of the rotating shaft 202. As a result, the third rotation transmission member 213 fixed to the main body 216 of the gear box.
Also rotates, causing the fourth protrusion 207 to rotate on the circumference. At this time, the first and second rotation transmission members 211 and 212
Is stationary, and the document supply roll 148 is still stationary.

At some point as a result of the fourth protrusion 207 rotating on an arc, it engages the third protrusion 206.
From this point, the second rotation transmission member 212 starts to rotate in the direction of the arrow 235 while being pushed by the fourth protrusion 207.
At the same time, the second protrusion 205 starts to rotate on the circumference. As a result of this, at some later point in time, the second protrusion 20
5 engages the first protrusion 204. At the same time, the first rotation transmitting member 211 starts rotating in the direction of the arrow 235 while the first protrusion 204 is pushed by the second protrusion 205.
Since the first rotation transmitting member 211 is fixed to the document supply roll 148, the document supply roll 148 starts from this point.
Will start rotating in the direction of arrow 235. As a result, the original 151 becomes the original pad 147 and the original supply roll 1.
By the action of 48, only one sheet is started to be conveyed. The leading edge of the document 151 reaches between the document transport rolls 156 and 157, and thereafter, the document is transported by the document transport rolls 156 and 157 toward an image sensor unit (not shown) at a constant speed.

By the way, the rotation speed is set so that the feeding speed of the original 151 by the original feeding roll 148 is slower by a predetermined amount than that of the original feeding rolls 156, 157. Therefore, when the leading edge of the original 151 is conveyed to between the original conveying rolls 156 and 157, the conveying speed thereafter increases by the difference between the two conveying speeds. This is because the document supply roll 148 is rotatably arranged with respect to the rotation shaft 202, and therefore rotates together with the movement of the document 151. As a result, the rotation of the document supply roll 148 by this becomes faster than that of the rotation shaft 202, so that the first and second projections 204 and 205 which have been in contact with each other are separated, and only the rotation speed of this difference is generated. First
The protrusions 204 start rotating faster than the second protrusions 205.

As a result, after a lapse of a predetermined time, the end of the first protrusion 204 on the side which has not been contacted until now becomes the second end.
Catch up with the end of the protrusion 205 of the side that has not been in contact with until now and press it at a differential rotation speed. Then, the second rotation transmission member 212 rotates up to the same speed as this speed of the document supply roll 148. As a result of this, the third and fourth protrusions 206, 2 which have been in contact with each other so far
07 leaves. Then, after another predetermined time has passed, the end of the third protrusion 206 on the side which has not been contacted until now catches up with the end of the fourth protrusion 207 on the side which has not been contacted until now. Press at the rotational speed of the difference.

Then, from this point, the main body 216 of the gear box starts rotating counterclockwise faster than the rotation of the rotary shaft 202. This is relatively the same as when the rotation shaft 202 starts rotating in the opposite direction, assuming that the rotation of the gearbox body 216 is stopped. Therefore, the main body 216 of the gear box shifts from the coupling relationship of the gears shown in FIG. 8 to the coupling relationship as shown in FIG. 10, and the second gear 219 finishes the meshing relationship with the transmission gear 218 and becomes free. Become. After that, the gear coupling member 232 rotates clockwise about the rotary shaft 202 as a fulcrum,
When the predetermined time has elapsed, the gear coupling member 232 contacts the stopper 221 as shown in FIG.

From this point until the trailing edge of the original 151 passes between the original pad 147 and the original supply roll 148, the main body 216 of the gear box rotates in the direction of arrow 235 while maintaining the arrangement shown in FIG. To do. At this time
The gear 219 is not receiving the rotational force from the main body 216 of the gear box. That is, no matter how long the original 151 is, the rotating shaft 202 and the original supply roll 148 are kept free in this state. In this way, the original 151
When the trailing edge passes between the document pad 147 and the document supply roll 148, the conveyance of the document 151 by the document supply roll 148 ends.

Then, the original supply roll 148, which has been rotating along with the previous conveyance of the original 151, does not receive this rotational force. The rotating shaft 202 continues to rotate even at this point. Therefore, the second gear 219 is rotated in the counterclockwise direction from the arrangement shown in FIG.
After shifting to the arrangement state shown in FIG. 8 and meshing with the transmission gear 218, the state further shifts to the arrangement state shown in FIG. As a result, when the main body 216 of the gear box starts rotating along with the rotating shaft 202, and further the first protrusion 204 to the fourth protrusion 207 are locked on the opposite side surfaces, the rotation of the document supply roll 148 is prevented. Start. This time from when the trailing edge of the previous document 151 passes through between the document pad 147 and the document supply roll 148 to when the document supply roll 148 starts to rotate is geared even when the shortest document is sent out. If the member 232 is brought into contact with the stopper 221, all of them are equal regardless of the length of the document 151 in the transport direction. That is, the gap between the originals 151 at the time of conveyance can always be kept constant regardless of the type of the originals 151.

Of course, each of the protrusions 204 to 207 and each of the rotation transmitting members 211 to 213 are prepared in order to increase the conveyance interval of the original 151 to some extent. Therefore, if sufficient spacing can be set by the time play of the gear box 214 itself, each of these protrusions 20
4 to 207 and the respective rotation transmission members 211 to 213 can be omitted. In this case, the document supply roll 148 may be directly connected to the gear box 214. Further, it is possible to omit some of the protrusions 204 to 207 and the rotation transmitting members 211 to 213 to set a shorter interval when the originals 151 are conveyed,
On the contrary, it is also possible to increase the number of these to make the conveyance interval of the document 151 longer. It is also possible to adjust the conveyance interval of the document 151 depending on whether the position of the stopper 221 arranged on the plate-shaped member 216B of the gear box 214 is set relatively close to the transmission gear 218 or far from the transmission gear 218. Is.

FIG. 11 is an enlarged view of the recording paper discharge tray and the vicinity of the recording paper discharge tray shown in FIG. In this figure, recording paper 137 is accumulated on the recording paper discharge tray 106 and a discharge lower tray 145 arranged at the lower end side thereof, and a plurality of originals 151 are stacked on the document discharge tray 115. The recording paper discharge tray 106, the discharge lower tray 145, or the recording paper 137 deposited on these forms a part of the discharge tray of the original 151, and the image information processing apparatus 1
00 is being made compact. That is, the original 151 whose image information has been read by the image sensor unit 158 is conveyed toward the original discharge tray 115 by the original discharge roll 161 (see FIG. 6), and the leading end thereof is the recording paper discharge tray 106 or above. The recording sheet 137 accommodated in is discharged so as to lean against it.

On the other hand, the recording sheet 137 is the fixing device 1
After being fixed by 43, it is discharged outside the apparatus by a discharge roll 144. At this time, when the document 151 has already been discharged, the leading end of the document 151 is discharged so as to interrupt the recording paper discharge tray 106 or a portion where the recording paper 137 accommodated on the recording paper 137 and the document 151 come into contact with each other. Therefore, even when the amount of the document 151 accumulated is large, the recording sheet 1
When the stiffness of 37 is weak, the recording sheet 13 is conventionally used.
When the tip of 7 passes under the manuscript 151, "just sit back"
In some cases, the recording paper 137 is deformed into a bellows shape in the space 301 between the document discharge tray 115 and the recording paper discharge tray 106 and is not properly discharged.

In the image information processing apparatus 100 of this embodiment, such a defect is eliminated by disposing the guide member 302 below the document discharge tray 115. In this embodiment, the guide members 302 are arranged at two positions in the width direction of the recording paper 137 with a predetermined space therebetween, and the portions that come into contact with the recording paper 137 are each about 1 cm in the discharge direction. The tip portion of the guide member 302 is set to a position slightly above the position of the uppermost layer when the maximum allowable number of recording sheets 137 is accumulated on the recording sheet discharge tray 106. As a result, the discharge roll 1
The recording sheet 137 discharged from the guide sheet 44 is fed to the guide member 30.
As a result of the upward movement being restricted by 2, the guide member 3
02 will be discharged into a narrower space than when there is not, and a loop formed when the leading end portion cuts into the contact portion of the recording paper discharge tray 106 or the recording paper 137 accommodated on the recording paper 137 and the original 151. The effect is to reduce the amount of.

When the amount of loop formation on the recording sheet 137 is reduced, "just feels weak" that occurs when the loop becomes too large.
The phenomenon of can be prevented. That is, recording sheet 1
As shown in FIG. 11, 37 can be put under the original 151 with almost no loop formation, and is stably deposited on the recording paper discharge tray 106 or the recording paper 137 accommodated thereon. be able to.

FIG. 12 shows a state in which the recording paper discharge tray and the document discharge tray are folded on the upper part of the apparatus main body. Guide member 30 in the document discharge tray 115
2 is attached to the base side of the recording paper discharge tray 10
Like the base side of 6, it is rotatable. Therefore, when the recording paper discharge tray 106 is rotated in the direction of the arrow 311 when the image information processing apparatus 100 is not used, the recording paper discharge tray 106 is rotated at a predetermined angle.
Comes into contact with the front end of the document discharge tray 115, and thereafter, the document discharge tray 115 is also rotated in the same direction. In this way, when the recording paper discharge tray 106 is folded so as to cover the upper portion of the apparatus main body 101, the original discharge tray 115 is also folded between the upper portion of the apparatus main body 101 and the original discharge tray 115. Become. Recording paper supply tray 10
2 can also be turned in the direction of arrow 312 to be folded so as to cover the upper part of the apparatus main body 101, and when not in use, the image information processing apparatus 100 should be made in a compact shape so as to save space as much as possible. You can

In the image information processing apparatus of the embodiment, the drive force of the rotary shaft 202 with respect to the document supply roll 148 is controlled by using the gear box 214, but may be controlled by using an electromagnetic clutch, for example. It is possible. In this case, for example, a sensor that detects a relative rotation direction may be arranged, and on / off control of the driving force may be performed according to the detection of this sensor. In addition to this, it is naturally within the scope of the present invention to electrically connect / separate the driving force when the difference between the peripheral velocities exceeds a predetermined value by electrical control.

First Modification

FIG. 13 shows a modification of the arrangement of the gear box and the gear as a first modification of the present invention. In the cylinder 216A ′ of the gear box shown in this figure, the transmission gear 218 is arranged at a position symmetrical with respect to the rotation shaft 202.
₁ , 218 ₂ and inner wall portions 234 ₁ , 2 of uniform wall thickness
34 ₂ are arranged. Also, the second gears 219 ₁ and 219 ₂ are meshed with the first gear 217 by a gear coupling member 232 'so as to be symmetrical. Further, the plate-shaped member 216B of the gear box is also provided with stoppers 221 ₁ , 2 at positions symmetrical with respect to the rotation shaft 202.
21 ₂ are arranged.

In the arrangement structure according to the first modification as described above, the driving force is applied to the main body of the gear box via the first gear 217 rotating with the rotary shaft 202 through the _{two second} gears 219 ₁ and 219 _2. Since it is transmitted to 216 ', it is possible to divide the load of each power transmission component to control the transmission of high torque power. In the example shown in FIG. 11, the first
Although the two second gears 219 ₁ and 219 ₂ are meshed with the gear 217 at 180 degrees apart, for example, the second second gears 219 are arranged so that three second gears 219 are arranged at 120 degrees apart. It is also possible to increase the number of the gears 219 arranged and to divide the load on the power transmission component by this amount. Thereby, even if these power transmission components are made of, for example, plastic, it is possible to transmit a sufficiently high torque.

Further, in the embodiment and the first modification, the main body 216, 216 'of the gear box has been described as having a cylindrical outer shape, but the transmission gears 218, 218 ₁ , 218.
_{Although the 2} has to form part of an arc, the rest of the shape is free and therefore the main body 216, 216 ′ of the gearbox is generally of another shape, such as a tubular shape with an oval cross section. It may have a shape. Further, although the embodiments and the first modification have been described on the premise that these gearboxes do not have the function of deceleration or acceleration, a plurality of gears are used for deceleration or acceleration to supply power to the document. It is also possible to transmit to the roll 148.

Further, in the embodiment and the first modification, the present invention is applied to the case where the original 151 is sent out at a predetermined interval, but the recording side or copying side sheet is conveyed at a predetermined interval. Of course, the present invention can be similarly applied when it is necessary to do so.

Second Modification

FIG. 14 is an enlarged view showing a recording paper discharge tray and the vicinity of the recording paper discharge tray as a second modification of the present invention. In the second modified example, one end of a guide member 322 is rotatably attached by a pin 323 to a projecting piece 321 provided near the center of rotation of the bottom of the document discharge tray 115. The ends of the coil springs 324 wound around the pins 323 are hooked between the upper center of the guide member 322 and the left side of the protrusion 321 in the drawing. As a result, the guide member 322 stands still at the position shown in the drawing without any load, and when a force in the direction of the arrow 326 is applied, the guide member 322 is rotated in the same direction by an angle corresponding to the strength of the force. Has become.

Therefore, in the image information processing apparatus of the second modified example, the tip end of the guide member 322 is placed closer to the recording paper discharge tray 106 side than the tip end of the guide member 302 of the previous embodiment in an unloaded state. be able to. That is,
As the recording paper 137 is accumulated on the recording paper discharge tray 106 as shown in FIG. 11, the tip of the guide member 322 is gradually rotated in the direction of the arrow 326 in contact with the uppermost layer of the recording paper 137. The recording paper 137 discharged from the 144 is the recording paper discharge tray 106.
The leading edge of the recording sheet 137 deposited on the uppermost recording sheet 137 can be sunk under the original 151 (see FIG. 11).
Can be accumulated on the recording paper discharge tray 106 in a more stable state.

FIG. 15 shows still another modified example of the document discharge tray of the second modified example. In this modified example, one end 331A of a highly flexible resin plate 331 bent in a "L" shape is bonded to the bottom of the document discharge tray 115. The other end 331B of the resin plate 331 has a function of pressing the recording paper 137 (see FIG. 11) to the recording paper discharge tray 106 (see FIG. 14) side, and thereby strengthens the rigidity of the recording paper 137 being discharged. The discharging operation can be performed without any hindrance.

[0093]

As described above, according to the first aspect of the present invention, the peripheral speed of the paper carrying roller is set higher than the peripheral speed of the feed roller, and the feed roller drive means has the feed roller as the paper carry roller. When the trailing edge of the paper leaves the feed roller, the transmission start delay means allows the feed roller to rotate around the paper until the time when the feed roller is rotated by the paper. In proportion to this, the time until the transmission of the rotational driving force of the feed roller driving means to the feed roller is started is delayed by mechanical play or the like. If the delay time becomes unsuitably long due to the conveyance of a long sheet, the transmission start delay time limiting means limits the length of the next sheet. It is possible to make the interval up to sending out appropriate. Further, if the time limit is applied to all the papers that can be handled, the intervals at which these papers are conveyed can be made constant, and efficient image reading and recording can be performed.

Further, according to the second aspect of the present invention, the timing until the next feeding of the sheet by the feed roller can be appropriately set by using at least two gears and a mechanism such as a toothed member. That is, stable paper feed control can be performed without using circuit components.

Further, according to the invention of claim 3, in addition to the constitution of the invention of claim 2, a driving means for the feed roller,
Since the inter-toothed member driving force transmission control mechanism is provided, it is possible to obtain a sufficient time required for the feed roller to be coupled to the feed roller drive means when the accompanying rotation state of the feed roller is released. Therefore, it is effective when it is necessary to set the gap between the sheets to a certain degree. Further, in such a case, the mechanism in which parts such as gears are arranged can be kept small, and the overall size of the mechanism can be reduced.

Further, in the invention described in claim 4, since the plurality of second gears, the toothed member and the abutment member are arranged in the image information processing apparatus according to claim 3, the power is dispersed and transmitted. Even if a mechanical component such as a gear made of plastic is used, sufficient torque can be transmitted.

Further, in the invention according to claim 5, in the image information processing apparatus in which the lower tray of the two trays also serves as the upper tray, when a plurality of sheets are stacked on the upper tray. Since the width of loop formation of the paper discharged to the lower tray can be narrowed, the rigidity of the paper becomes relatively strong with a simple mechanism, preventing the paper from bending and pushing the paper of the upper tray differently. Thus, there is an effect that the paper is smoothly discharged to the lower tray.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external appearance when an image information processing apparatus according to an embodiment of the present invention is used.

FIG. 2 is a perspective view showing a state in which a recording paper discharge tray of the image information processing apparatus of this embodiment is closed.

FIG. 3 is a schematic configuration diagram of the image information processing apparatus according to the present embodiment as viewed from the side.

FIG. 4 is an enlarged principle view showing the vicinity of a supply roll and a paper feed table of the present embodiment.

FIG. 5 is a side view showing a state in which a document before being read is set in the apparatus in the present embodiment.

FIG. 6 is a perspective view showing a state in which an upper cover portion of the image information processing apparatus of this embodiment is removed.

FIG. 7 is a perspective view showing an intermittent drive mechanism of a document supply roll in this embodiment.

FIG. 8 is a partial cross-sectional view showing the arrangement in the gear box showing a state in which the rotary shaft and the gear box are connected in this embodiment.

FIG. 9 is a partial cross-sectional view showing the arrangement in the gear box, showing a state in which the connection between the rotary shaft and the gear box is released in the present embodiment.

FIG. 10 is a partial cross-sectional view showing an arrangement in the gear box showing an intermediate state between the states of FIGS. 8 and 9 in the present embodiment.

11 is an enlarged side view showing the recording paper discharge tray shown in FIG. 3 and the vicinity of the recording paper discharge tray.

FIG. 12 is a side view of essential parts showing a state in which the recording paper discharge tray and the document discharge tray are folded over the upper part of the apparatus main body.

FIG. 13 is a partial cross-sectional view showing an arrangement of gearboxes and gears according to a first modified example of the present invention.

FIG. 14 is a side view of an essential part showing a recording paper discharge tray and the vicinity of the recording paper discharge tray in a second modified example of the invention.

FIG. 15 is a side view showing a part of a document discharge tray in still another modification of the document discharge tray of the second modification.

FIG. 16 is a side view showing an example of how paper is sent out from a supply tray.

FIG. 17 is a side view showing a main part of the configuration of the image information processing apparatus according to the first proposal.

FIG. 18 is a perspective view showing an intermittent drive mechanism of a document supply roll according to a second proposal.

[Explanation of symbols]

100 ... Image information processing device, 101 ... Device body, 102 ...
Recording paper supply tray, 106 ... Recording paper discharge tray, 1
15 ... Original discharge tray, 137 ... Recording paper, 144 ... Eject roll, 145 ... Eject lower tray, 147 ... Original pad, 148 ... Original supply roll, 151 ... Original, 156,
157 ... Original transport roll, 202 ... Rotating shaft, 204-2
07 ... Arc-shaped protrusion, 211 ... First rotation transmitting member, 2
12 ... 2nd rotation transmission member, 213 ... 3rd rotation transmission member, 214 ... Gearbox, 216 ... Gearbox main body, 217 ... 1st gear, 218, 218 ₁ , 218 ₂
... Transmission gears, 219, 219 ₁ ... Second gears, 221,
221 ₁ , 221 _2, ... Stoppers, 234, 234 ₁ , 2
34 ₂ ... Inner wall portion with uniform thickness, 302, 322 ... Guide member, 324 ... Coil spring

Front Page Continuation (72) Inventor Toru Onuma 3-7-1, Fuchu, Iwatsuki City, Saitama Fuji Xerox Co., Ltd. Iwatsuki Plant

Claims (5)

[Claims] 1. A paper transport roller for transporting a paper at a predetermined transport speed, and a paper transport roller which is arranged at a position returned to the paper transport side by a predetermined length from the paper transport roller. A feed roller for feeding the paper, a feed roller drive means for rotating the paper feed roller at a predetermined peripheral speed lower than the peripheral speed of the paper transport roller in a state of being connected to the feed roller, the drive roller drive means and the feed roller When the sheet is arranged between the rollers and the sheet is conveyed by both rollers at the same time and the peripheral speed of the feed roller is slower than the peripheral speed of the sheet convey roller, the connection between the feed roller driving means and the feed roller is cut off. When the trailing edge of the paper leaves the feed roller, the feed roller driving force for the feed roller is proportional to the time during which the paper is being conveyed by both rollers at the same time. A transmission start delay means for delaying the time for starting the transmission of the rotational driving force of the stage, and when the transmission start time by the transmission start delay means becomes longer than a preset time, this is limited to the set time An image information processing apparatus comprising: a transmission start delay time limiting unit. 2. A sheet transport roller for transporting a sheet, and a feed roller arranged at a position returned to the sheet feed side by a predetermined length from the sheet transport roller and sending the sheet to the sheet transport roller. A feed roller drive means for rotating the feed roller connected to the feed roller at a predetermined peripheral speed lower than the peripheral speed of the paper transport roller; and a first gear rotated by the feed roller drive means. , A second gear that meshes with the first gear and rotates with this rotation
Gear, a gear attachment that holds the respective rotation shafts of the first and second gears rotatably at predetermined intervals, and a meshing portion that meshes with the second gear for a predetermined length,
In the state where the stopper portion that prevents the second gear from moving outward from one end of the meshing portion and the second gear that moves outward from the other end of the meshing portion, The toothed member having a meshing releasing portion that releases the meshed state with the meshing portion and makes its rotation free, and the toothed member that is integrally formed with the toothed member and is free An abutment member that comes into contact with the gear fitting when it is moved by a predetermined length or more in a direction away from the second gear and the toothed member that integrally rotates while the force in the moving direction is applied. An image information processing apparatus comprising: 3. A paper carrying roller for carrying the paper, and a feed roller arranged at a position returned to the paper feeding side by a predetermined length from the paper carrying roller and sending the paper to the paper carrying roller. A feed roller drive means for rotating the feed roller connected to the feed roller at a predetermined peripheral speed lower than the peripheral speed of the paper transport roller; and a first gear rotated by the feed roller drive means. , A second gear that meshes with the first gear and rotates with this rotation
Gear, a gear attachment that holds the respective rotation shafts of the first and second gears rotatably at predetermined intervals, and a meshing portion that meshes with the second gear for a predetermined length,
With a stopper portion that prevents the second gear from moving outward from one end of the meshing portion, and a state in which the second gear moves outward from the other end of the meshing portion. The toothed member having a meshing releasing portion that releases the meshed state with the meshing portion and makes its rotation free, and the toothed member that is integrally formed with the toothed member and is free An abutting member that abuts against the gear fitting and moves the second gear and the toothed member as a unit while the force in the moving direction is applied when the second gear and the toothed member move relative to each other in the direction away from A feed which is arranged between the toothed member and the feed roller and intermittently controls the transmission of the rotational driving force between the feed roller driving means and the toothed member due to a difference in rotational speed between the paper transport roller and the feed roller. Between roller drive means and toothed member Image information processing apparatus characterized by comprising a power transmission control mechanism. 4. The image information processing apparatus according to claim 3, wherein a plurality of the second gears, the toothed member, and the abutting member are arranged. 5. A first tray for accommodating discharged sheets of the first system, which are inclined obliquely upward, and a second tray of sheets arranged above the first tray and discharged. A second tray in which the upper part leans on the upper tray part of the first tray and accommodates only the lower part, and the paper of the first system is discharged to the first tray at the lower part of the second tray. It is arranged so as to project to the route,
An image information processing apparatus comprising: a guide member that restricts an upward movement of the first system sheet passing through this path.