JP2880579B2 - Manual paper feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual paper feeder provided in various recording devices such as printers and copiers.

In recent years, many printers and copiers have an automatic paper feeder which automatically feeds a plurality of recording papers. However, a manual paper feeder which can manually supply recording papers is also available. It is also necessary.

[0003]

2. Description of the Related Art In a manual paper feeder of this type, a pair of paper suction rollers for sandwiching a recording paper and feeding the recording paper inward are generally provided inside the insertion slot so as to face each other. The recording paper is fed to a recording section inside the apparatus by pressing the leading end of the paper from outside to the space between the paper suction rollers and rotating the paper suction roller.

[0004]

In the case of a manual sheet feeder, as described above, a recording sheet is manually pressed between a pair of sheet suction rollers. However, generally, the recording sheet is pressed before the sheet suction roller starts rotating. I often release my hand from the recording paper.

Therefore, when the opposing sheet suction rollers start rotating, the force acting to pinch the leading end of the recording sheet is caused by the frictional force between the surface of the sheet suction roller and the leading edge of the recording sheet and the recording sheet. Is only a slight force of the pressing force exerted between the paper suction rollers by its own weight.

For this reason, even if the paper suction roller starts to rotate, the leading end of the recording paper cannot be pinched by the paper suction roller, and the recording paper is not fed at all, or the recording paper is fed obliquely. Frequent skewing and the like often occurred.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a manual sheet feeder which can solve such conventional drawbacks and reliably feed recording sheets without causing misfeeds or skew.

[0008]

In order to achieve the above object, a manual paper feeder according to the present invention is provided for inserting a recording paper 100 from the outside as shown in FIG. And a pair of sheet suction rollers 15 and 16 for sandwiching the recording sheet 100 and feeding the recording sheet 100 inward, and an opposing portion of the pair of sheet suction rollers 15 and 16. A pressing force maintaining means 32 for maintaining a pressing force applied to the recording paper 100 from the outside toward 19 is provided.

Note that the pressing force maintaining means 32 may maintain the bent state of the recording paper 100 whose tip is pressed against the opposing portion 19 of the pair of paper suction rollers 15 and 16. Good.

[0010]

The recording paper 100 is transferred to a pair of paper suction rollers 15,
When the hand is pressed between the recording paper 100 and the recording paper 100, the pressing force applied to the recording paper 100 by hand is maintained by the pressing force maintaining means 32.

Therefore, next, the paper suction rollers 15, 1
When the recording paper 6 starts to rotate, the recording paper 100 is pressed between the paper suction rollers 15 and 16 by the force when pressed by hand. Is sent to

The pressing force applied by hand is applied to the recording paper 100 which has been pressed and deflected by the paper suction rollers 15 and 16.
Can be maintained by maintaining the flexed state of.

[0013]

An embodiment will be described with reference to the drawings.

FIG. 2 shows a printer provided with a manual paper feeder according to the first embodiment of the present invention, and a printing unit 60 is built in the housing 1.

The paper feed section 3 is provided with an automatic paper feeder 2 and a manual paper feeder 10. Reference numeral 80 denotes a discharge roller for discharging the printing paper (recording paper) on which printing has been completed to the stacker 81, and a paper conveyance path between the paper supply unit 3 and the printing unit 60 and between the printing unit 60 and the discharge roller 80. 90 and 91 are formed. Reference numeral 21 denotes a sheet suction roller 1 described later.
This is a drive motor for rotating the drive 5 and 16.

In the back of the manual insertion slot (insertion slot) 11, a pair of paper suction rollers composed of a main driving roller 15 and a driven roller 16 are arranged opposite to each other and slightly pressed against each other. 15 is the drive motor 2
If driven by 1, the driven roller 16 rotates accordingly.

FIG. 1 shows the manual paper feeder 10 in an enlarged manner. Reference numerals 13 and 14 denote upper and lower guide plates for guiding the printing paper 100 manually inserted from the manual insertion slot 11 to the positions of the paper suction rollers 15 and 16.

The printing paper 1 on the upper surface side of the lower guide plate 14
The sheet pressing lever 32 (pressing force maintaining means) is urged by a tension spring 33 to a position where 00 passes, and is pressed against the lower guide plate 14. Reference numeral 34 denotes a rotation shaft of the paper pressing lever 32.

The leading end portion of the paper holding lever 32 is formed by smoothly bending toward the paper suction rollers 15 and 16, and the vicinity of the rounded leading end portion is formed by the urging force of the tension spring 33. Is pressed against the lower guide plate 14.

Therefore, the printing paper 100 is inserted into the manual feed slot 1
When the printing paper 100 is passed between the paper pressing lever 32 and the lower guide plate 14 from the first side, the movement of the printing paper 100 acts in a direction (opening direction) in which the paper pressing lever 32 is separated from the surface of the lower guide plate 14. When the printing paper 100 attempts to return from the paper suction rollers 15 and 16 to the manual feed port 11 on the contrary, the movement is performed in a direction in which the paper holding lever 32 bites into the lower guide plate 14 surface (closing direction). Act on.

Next, the operation of this embodiment will be described.
When the printing paper 100 is manually inserted into the manual feed slot 11 from the outside and pushed inward, the printing paper 100 is guided by the upper and lower guide plates 13 and 14 and is pressed against the lower guide plate 14. The pressing lever 32 is pushed open, and the leading edge of the printing paper 100 reaches the facing portion 19 between the paper suction rollers 15 and 16.

Then, when the printing paper 100 is pressed straight against the opposing portions 19 of the paper suction rollers 15, 16, the printing paper 10 has a size corresponding to the pressing force.
0 flexes, for example, as shown in FIG.

Then, when the user releases his / her hand from the printing paper 100, the printing paper 100 attempts to recover to the original state without bending. However, the printing paper 100 is
The movement in the return direction is prevented at the portion sandwiched by the lower guide plate 14 and the lower guide plate 14, so that the state in which it is still bent at the front side is maintained.

Therefore, the pressing force applied to the printing paper 100 by hand is maintained on the bent printing paper 100, and the printing paper 100 remains pressed against the paper suction rollers 15 and 16.

In this state, when the paper suction rollers 15, 16 start rotating in the paper transport direction (the direction of the arrow in FIG. 1) by the drive motor 21, the opposing portion 1 of the two rollers 15, 16 is rotated.
The leading edge of the printing paper 100 pressed against the printing paper 9 is securely sandwiched between the rollers 15 and 16 and is fed into the paper transport path 90.

[0026]

[0027]

[0028]

[0029]

[0030]

[0031]

[0032]

[0033]

[0034]

[0035]

According to the manual paper feeder of the present invention, even if the recording paper is pressed by hand against the pair of paper suction rollers by hand and then released from the recording paper, it is added to the recording paper by hand. Since the applied pressing force is maintained by the pressing force maintaining means, the pressing force ensures that the recording paper is sandwiched between the paper suction rollers, and that the recording paper is reliably fed without occurrence of misfeed or skew. There is an excellent effect that can be.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a first embodiment.

FIG. 2 is an overall schematic diagram of a recording apparatus according to a first embodiment.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 11 Manual insertion opening (insertion opening) 15 Main driving roller (paper suction roller) 16 Follower roller (paper suction roller) 19 Opposing portion 32 Paper pressing lever (pressing force maintaining means) 100 Printing paper (recording paper)

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65H 11/00-11/02

Claims (1)

(57) [Claims] A pair of sheet suction rollers provided opposite to each other inside a slot for inserting a recording sheet from the outside to sandwich the recording sheet and feed the recording sheet inward ; Insert the slot so that the surface is
A guide plate disposed between the paper suction roller and the guide plate so that the recording paper is sandwiched between the guide plate and the guide plate.
It is urged to move the axis parallel to the axis of the paper intake roller.
The recording paper is inserted so that it can swing freely around the heart.
When moving from the mouth side to the paper suction roller side,
Therefore, the above-described sandwiching state is loosened, and the recording paper is raised.
Try to return from the paper suction roller side to the insertion port side.
When this is done, the pinching condition is further strengthened.
And a paper pressing lever provided so as to maintain a pressing force applied to the recording paper from the outside toward the facing portion of the pair of paper suction rollers.
A manual paper feeder , characterized in that: