JPS6387458A - Feeding device - Google Patents

Abstract

PURPOSE:To feed a large quantity of sheets of paper and a manually feeding sheet of paper with a simple structure by providing a feeding means for feeding one at a time piled sheets of paper from its bottom part into a manual feed port and a manual feeding guide for guiding manually feeding sheets of paper to said manual feed port. CONSTITUTION:The captioned device has a placing part 41 for placing piled sheets of paper 10 which is provided on a feeding unit, the feeding unit K for feeding one at a time the sheets of paper 10 placed on the placing part 41 from one on the bottom part, and a manual feeding guide 28 which is provided on the feeding unit K and which guides sheets of paper for manual feeding to a manual feed port 101. Thereby, a large quantity of sheets of paper 10 can be fed with a simple structure without need for using a lifter, etc. for lifting up and down sheets of paper 10 as in the conventional device, further, enabling the feeding of manual feeding sheets of paper with the feeding unit kept installed. Accordingly, the device can be simplified in its mechanism and miniaturized, while reducing a cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a feeding device that takes out a large number of stacked paper sheets such as envelopes one by one and feeds them one by one.

(Prior Art) Some feeding devices are connected to a manual feed port of a printer main body, and feed paper sheets from the manual feed port for printing. This feeding device stacks a large number of paper sheets on an elevating plate, rolls a take-out roller into contact with the topmost sheet of the stack, and rotates the take-out roller to pick up the paper sheets. The sheets are sequentially taken out and fed one by one.

(Problems to be Solved by the Invention) However, the conventional feeding device raises the elevating plate every time a predetermined amount of paper sheets are taken out, and when placing paper sheets, the elevating plate is raised. There were problems in that it had to be lowered, making it mechanically complex, bulky, and expensive.

Further, since the feeding device is installed after removing the manual feed guide attached to the manual feed slot of the printer body, it is not possible to feed paper manually with the feeding device attached, which is inconvenient.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a system in which a unit main body is attached to a manual feed port of an image forming apparatus main body, in which a unit main body is installed in the feeding unit. a loading section for loading the stacked paper sheets, a feeding means for feeding the sheets placed on the atZ section one by one from the lowest one to the manual feed slot; The present invention is characterized in that it includes a manual feed guide provided in the feeding unit to guide paper sheets for manual feed to the manual feed slot.

(Function) With the above means, it is possible to feed a large amount of paper sheets with a simple configuration without using an elevating mechanism, and moreover, it is possible to feed paper sheets for manual feeding with the feeding unit attached. I did it like that.

(Example) The present invention will be described below with reference to an example shown in FIGS. 1 to 3. In the figure, 100 is a main body of a printer as an image forming apparatus, and a manual feed port 101 of this printer main body 100
A feeding device 1 is connected to. This feeding device 1 has a stacking section 41 on which paper sheets 10 such as envelopes are stacked and placed.
and paper sheets 10 placed on this placing section 41...
The sheets are taken out and fed one by one starting from the bottom one. That is, the kick roller 2 is rotatably provided on the lower side of the mounting section 41. By rotating the kick roller 2 in the direction of the arrow, the stacked paper sheets 10 are sent out starting from the lowest one and taken out by the feed roller 3. A separation roller 4 is rolled into contact with the upper side of the feed roller 3, and this separation roller 4 is rotated in the opposite direction to the feed roller 3 to prevent the paper sheets 10 from being taken in duplicate. The paper sheet 10 taken out by the feed roller 3 is conveyed along a conveyance path 42, and this conveyance path 42 includes aligning rollers 5, 6 and intermediate rollers 7, 8 along the conveyance direction of the sheet 10. is installed.

Further, a switch 1 is provided between the feed roller 3 and the aligning roller 5 to detect jamming of paper sheets 10, etc.
1 is provided, and furthermore, paper sheets 10 are provided in the above-mentioned placement section 41.
A switch 12 is provided to detect the absence of... Further, reference numeral 13 in the figure is a switch for detecting the opening/closing of the opening/closing door 14, and this switch 13 is configured to stop the feeding operation when opening/closing of the opening/closing door 14 is detected.

FIGS. 2(a) and 2(b) show the drive mechanism on the light side of the feeding device 1, in which reference numeral 51 is a motor and 52 is a pulley attached to the motor shaft 51a. Drive is transmitted from the pulley 52 to the gear 56 of the feed roller 3 via the belt 53 and the geared pulley 54 and gear 55 to reduce the speed. The shaft 80 of the feed roller 3 has a gear 56 and a ratchet 57. A spring clutch 59 and an arm μ 58 are provided, and the paper feed solenoid 63 is turned off.
At this time, the flapper 81 of the paper feed solenoid 63 is engaged with the ratchet 57 by the spring 93, and the drive is not transmitted to the feed roller shaft 80, and the gear 5
Only 6 rotates.

Further, when the paper feed solenoid 63 is turned on, the flapper 81 is attracted by the paper feed solenoid 63 and separated from the ratchet 57, and the drive is driven by the gear 56, spring clutch 59. Feed roller shaft 80 through arm μ58
is transmitted to rotate the feed roller 3.

On the other hand, drive is transmitted from the gear 56 to the gear 61 of the aligning roller (lower) 5 via the intermediate gear 60, and further from this gear 61 to the idle gear 62 of the intermediate shaft 81 to the left side drive mechanism described later. Communicating. At this time, the drive of the shaft 82 of the aligning roller (lower) 5 is transmitted to the feed roller shaft 8 mentioned above.
0, and the aligning solenoid 64 transfers the drive. The drive transmitted to the left side by the gear 62 and shaft 81 is transmitted to the ladder wheel 77 and the ladder chain 79, as shown in FIGS. 3(a) and 3(b).
and is transmitted to the shaft 83 of the intermediate roller luff by the rudder wheel 78.

Also, when the paper feed solenoid 63 is turned on, the shaft 8
0, gears 65, 66, 67 and ladder wheel 68, first, ladder chain 69 and one-way clutch 7.
Drive is transmitted to the kick roller shaft 86 by the rudder wheel 70 having a built-in roller. At this time, the one-way clutch 71 is arranged so as to rotate idly with respect to the traveling direction of the paper sheets 10. At the same time, the separation roller shaft 85 is driven via the ladder chain 72 and ladder wheel 73.

When the aligning solenoid 64 is turned on, the shaft 82 of the aligning roller (lower) 5 is driven and transmitted to the aligning roller (upper) 6 via the gears 74, 76 and the one-way clutch 75.

Next, the unit structure of the feeding device 1 will be explained using FIG. 1.

The feeding unit main body 29 is composed of upper and lower covers 22 and 26, and the upper cover 22 is provided with an opening/closing door 14. A PC board 27 for controlling the feeding device 1 is attached to the lower cover 26, and a plate material 30 for turning the door 5W13 ON/OFF is welded to the opening/closing door 14. The opening/closing door 14 is biased by a torsion coil spring 29a provided on the upper cover 22 so that it will not fall down even if you let go of it when it opens beyond a certain angle, and is attached to the side closer to the printer body 100 via a hinge 31. ing.

Furthermore, a pair of manual feed guides 28 are movably mounted on the opening/closing door 14 via a rack 19 and a pinion 20. Filter paper sheets 10 fed by this manual feed guide 28 and paper sheets 10 fed from the feeding unit 1
are transported by the same transport path 102.

Therefore, when feeding the paper sheets 10 stacked on the feeding device 1 to the printer main body 100, the printer main body 100
The power is turned on, thereby supplying power to the feeding device 1, and after checking whether the various switch states are normal, the motor 51 is turned on in response to a start signal. After detecting that the rotation speed of the motor 51 is locked, the paper feed solenoid 63 is turned ON, and the feed roller 3, kick roller 2, and separation roller 4 are rotated via the spring clutch 59, and the loaded paper is rotated. The bottom one of the leaves 10 is sent out, and the paper leaf detection switch 11 is turned off.
When the paper feed solenoid 63 is turned OFF, the aligning solenoid 64 is turned ON, and the spring clutch 59 is turned OFF.
After the paper sheet 10 is conveyed by driving the aligning rollers 5 and 6 via the intermediate roller 7.8, which is rotated at the same time as the motor 51 is turned on, it is fed to the printer main body 100.

Further, when feeding paper sheets 10 for manual feeding, the paper sheets are fed from the manual feed guide 28 and sent to the conveyance path 102 via the manual feeding port 101. As a result, when the manual feed detection switch 103 in the printer main body 100 is turned on, the transport roller 103 rotates and the sheet is sent to the image forming section via the aligning roller 104.

In addition, FIG. 4 shows another embodiment of the present invention. In manual feeding using the feeding device 1, there is a window 14a in the opening/closing door 14, and the paper that has passed through the window 14a has already been rotated. It is also possible to feed it to the same conveyance path 102 by biting into the intermediate roller 7.8.

[Effects of the Invention] As explained above, according to the present invention, the stacked paper sheets are taken out and fed one by one starting from the lowest one, so that the paper sheets are This eliminates the need for an elevating mechanism for elevating and lowering the device, making it possible to simplify and downsize the mechanism and reduce costs.

Further, since the feeding unit is provided with a manual feed guide, manual feeding can be performed even when the feeding device is attached to the manual feeding port, which is convenient.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention.
The figure is a schematic configuration diagram showing the feeding device, FIG. 2(a) is a side view showing the drive mechanism on the light side of the feeding device, FIG. 2(b) is a top view thereof, and FIG. 3(a) is FIG. 4 is a side view showing the left side drive mechanism, FIG. 4B is a top view thereof, and FIG. 4 is a configuration diagram showing another embodiment of the present invention. 10...paper sheets, 28...manual guide, 29...
Feeding unit, 41... Placement section, 100... Printer main body (image forming apparatus main body), 101... Manual feed port, K
...Feeding unit.

Claims (4)

[Claims] (1) In an image forming apparatus in which a feeding unit is attached to the manual feed port of the image forming apparatus main body, the feeding unit includes a loading section on which stacked paper sheets are placed, and a loading section on which the stacked paper sheets are placed. a feeding means for feeding the loaded paper sheets one by one to the manual feed slot from the lowest one, and a hand provided in the feeding unit for guiding manual paper sheets to the manual feed slot. A feeding device comprising a differential guide. (2) The feeding device according to claim 1, further comprising an opening door for opening and closing the feeding unit, and a manual guide provided on the opening/closing door. (3) The paper sheets fed from the manual guide and the paper sheets fed from the feeding unit are sent to the same conveyance path, according to claim 1 or 2. feeding device. (4) The feeding device according to claim 2 or 3, wherein the opening/closing door has a fulcrum on the side closer to the manual feed port, and opens and closes around this fulcrum.