CN103030001A

CN103030001A - Paper feeding device

Info

Publication number: CN103030001A
Application number: CN2012103679231A
Authority: CN
Inventors: 佐佐木龙之
Original assignee: Konica Minolta Inc
Current assignee: Konica Minolta Inc; Konica Minolta Business Technologies Inc
Priority date: 2011-10-03
Filing date: 2012-09-28
Publication date: 2013-04-10
Anticipated expiration: 2032-09-28
Also published as: CN103030001B; JP5477355B2; JP2013079120A

Abstract

The invention provides a paper feeding device having a paper box which can be freely loaded and unloaded at an image forming device body. The positioning of a sensor for size detection can be reliable to prevent incorrect detection of paper size. The paper feeding device comprises a rod for size detection (25), which can be installed to a paper box (1) based on the change of paper size, a sensor unit (30) which is assembled to the image forming device body by a retainer for detecting paper size based on the deflection of the rod for size detection (25), a positioning component (5) of the sensor unit (30) which is fixed to the paper box (1). The sensor unit (30) is disposed in the retainer in a manner of freely sliding in the regulated range in a direction orthogonal to the loading and unloading directions (A, A') of the paper box (1). When the paper box (1) is assembled to the device body, the positioning component (5) clamps the sensor unit (30) to limit the sliding position of the sensor unit (30).

Description

Paper feed

Technical field

The present invention relates to paper feed, relate in particular to the paper feed that is included in image processing system main body loading and unloading freely and takes in the carton that plurality of sheets of paper opens with stacked state.

Background technology

Generally, in the image processing system that adopts the electrofax mode, the carton of carrying one by one the paper of taking in stacked state and is equipped with sensor for detection of the antiquarian that loads at apparatus body with respect to the image processing system main body from direction loading and unloading freely.Make the bar etc. of the sensor action be installed on carton according to antiquarian.But, for this carton, being assemblied under the state of apparatus body, position skew (rocking) slightly is inevitable.

Yet in recent years, the small problem that causes the error detection antiquarian of rocking because of carton has appearred in sensor miniaturization, save space.In the past, proposed to be used for to prevent the method for the error detection of antiquarian at

patent documentation

1,2 etc., but as the location that makes sensor easily and can prevent the mechanism of maloperation, still can not be satisfactory.

Patent documentation 1: Japanese kokai publication hei 8-239125 communique

Patent documentation 2: Japanese kokai publication hei 7-157136 communique

Summary of the invention

The object of the present invention is to provide a kind of size detection that makes reliable and can prevent the paper feed of the error detection of antiquarian with the location of sensor.

Paper feed as a mode of the present invention comprises carton, this carton in image processing system main body loading and unloading freely and take in plurality of sheets of paper with stacked state and open, described paper feed is characterised in that,

Described paper feed possesses:

Size detection bar, this size detection with bar can be installed on according to the mode of antiquarian displacement described carton;

Sensor unit, this sensor unit is assemblied in described apparatus body via retainer, is used for according to the displacement detection antiquarian of described size detection with bar;

The align member of described sensor unit, this align member is fixed in described carton,

Described sensor unit with along with the loading and unloading direction of described carton roughly the direction of the quadrature mode of sliding freely in specialized range be installed on described retainer,

When described carton was assemblied in described apparatus body, described positioning element was clamped described sensor unit, to limit the sliding position of this sensor unit.

In described paper feed, the align member and the size detection that are installed on the sensor unit of apparatus body in slip mode freely are installed on carton with bar.When carton was assemblied in apparatus body, align member was clamped sensor unit, to limit the sliding position of this sensor unit.That is, because sensor unit is by the align member restriction site that is fixed in carton, so this sensor unit and the size detection that is installed on equally carton become reliably with the relative position relation between the bar, and then can prevent the error detection of antiquarian.

According to the present invention, make size detection reliable and can prevent the error detection of antiquarian with the location of sensor.

Description of drawings

Fig. 1 is from the summary block diagram of top observation as the paper feed of an embodiment.

Fig. 2 is for observing the summary block diagram of described paper feed from the back side.

Fig. 3 is the block diagram that the sensor unit that is installed on retainer is shown.

Among Fig. 4, (A) for the instruction diagram of the state that position regulation member leaves from sensor is shown, (B) for sensor to be shown by the instruction diagram of the state of align member restriction site.

Fig. 5 is illustrated in size detection in the situation of the paper of taking in the A3 size with the instruction diagram of the index position of bar.

Fig. 6 is illustrated in size detection in the situation of the paper of taking in the vertical delivery size of A4 with the instruction diagram of the index position of bar.

Fig. 7 is illustrated in size detection in the situation of the paper of taking in A4 lateral transfer size with the instruction diagram of the index position of bar.

Description of reference numerals:

1 ... carton; 5 ... the location projection; 11,12 ... the sidepiece confinement plate; 20 ... the rear end confinement plate; 25 ... the size detection bar; 30 ... sensor unit; 31 ... box body; 35a ~ 35d ... actuator; 40 ... retainer.

The specific embodiment

Below, the embodiment to paper feed involved in the present invention describes with reference to accompanying drawing.In addition, in each figure, identical components, part are marked with common symbol, omit repeat specification.

The carton 1 of Figure 1 and Figure 2 can be assemblied in image processing system along the arrow A direction, and can be along the arrow A opposite with arrow A ' direction dismantles from image processing system, and described image processing system utilizes known electrofax mode will be formed at the toner image that picture holds on the body (photosensitive material or middle transfer body) and is needed on the paper.Paper loading is in the loading part 2 of Fig. 1, and the not shown paper feed roller that utilizes the main body side that is arranged at image processing system begins paper one by one along arrow B direction paper supply from the superiors of the paper that loads.

In carton 1, the paper of taking in is positioned the middle body of loading part 2 by a counter-lateral quadrents confinement plate 11,12.As shown in Figure 2,

sidepiece confinement plate

11,12 moves freely along the direction with paper supply direction B quadrature by being formed at sliding

part

13,14 tooth bar and the miniature gears 15 that rotates freely at the back side of box 1, and is arranged at the position corresponding with the paper both sides.In addition, utilize the rearward end on paper supply direction B of 20 pairs of paper of rear end confinement plate to position.Rear end confinement plate 20 moves freely along paper supply direction B and reversing sense thereof, and is arranged at and the corresponding position of antiquarian.In the present embodiment, as antiquarian, be assumed to A3 size, the vertical delivery size of A4 (situation of carrying in the long limit of the paper mode parallel with paper supply direction B), A4 lateral transfer size (situation of carrying in the paper minor face mode parallel with paper supply direction B).Certainly, also can be corresponding with the paper of in addition size.

For rear end confinement plate 20, in the situation of the paper of taking in the A3 size, be arranged at the position A3 of Fig. 1, in the situation of the paper of taking in the vertical delivery size of A4, be arranged at the position A4T of Fig. 1, in the situation of the paper of taking in A4 lateral transfer size, be arranged at the position A4Y of Fig. 1.In addition, the known this

sidepiece confinement plate

11,12 or the restriction to paper carried out of rear end confinement plate 20 that utilizes in the past.

Be associated with described rear end confinement plate 20, in the rear side of box 1, size detection shown in Figure 2 utilizes pin 21 and rear end confinement plate 20 to link with bar 25.Specifically, size detection is mounted to take bolster 26 as fulcrum in the rotation of the back side of box 1 freely with bar 25, and the pin 21 that is arranged at rear end confinement plate 20 is sticked in groove 27.Pin 21 slides freely at the slotted hole 3 of the base plate that is formed at box 1.

That is, with bar 25, when taking in the paper of A3 size, be indexed to position shown in Figure 5 for size detection, be indexed to position shown in Figure 6 when taking in the paper of the vertical delivery size of A4, be indexed to position shown in Figure 7 when taking in the paper of A4 lateral transfer size.Detect this displacement state by the sensor unit 30 that is arranged at the image processing system main body and detect the antiquarian that is accommodated in box 1.

Sensor unit 30 is installed on apparatus body (installation constitution aftermentioned) via retainer 40, and the sensor main body (not shown) that detects the action of actuator 35a, 35b shown in Figure 4,35c, 35d is built in box body 31.On the other hand, be formed with

cam

25a, 25b, 25c in size detection with the end of bar 25.During rotation is extremely shown in Figure 5 in that size detection is corresponding with the A3 size with bar 25 position, only actuator 35d is pressed by cam 25a, and the detection paper is the A3 size.During rotation is extremely shown in Figure 6 in that size detection is corresponding with the vertical delivery size of A4 with bar 25 position,

actuator

35a, 35b, 35c are pressed by protuberance 25b, and the detection paper is the vertical delivery size of A4.During rotation is extremely shown in Figure 7 in that size detection is corresponding with A4 lateral transfer size with bar 25 position,

actuator

35c, 35d are pressed by protuberance 25b, and the detection paper is A4 lateral transfer size.

Here, the installation constitution of sensor unit 30 described.As shown in Figure 3, sensor unit 30 is sticked in the hole section 41 of retainer 40 by the claw 32 that is formed at box body 31 and one is installed on retainer 40.And the projection 33 that is formed at box body 31 is sticked in the hole section 42 of retainer 40, and sensor unit 30 slides freely in the formation scope of hole section 42 along bearing of trend C, the C ' (with the loading and unloading direction A of box, the direction of A ' quadrature) of hole section 42.In addition, claw 32 also slides freely along C, C ' direction with respect to hole section 41.

As shown in Figure 4, described retainer 40 is fixed in the body frame 50 of image processing system by screw 51.On the other hand, at carton 1, be formed with a pair of location with projection 5 in its rear side.The width D 2 that the location is a bit larger tham box body 31 with the interval D 1 of projection 5.Shown in Fig. 4 (A), be not assemblied in fully in the situation of apparatus body at box 1, the location is left from sensor unit with projection 5.Shown in Fig. 4 (B), when box 1 is assemblied in apparatus body, the both sides that box body 31 is clamped with projection 5 in the location, with limiting sensor unit 30 along arrow C, the sliding position of C ' direction.

Thus, the relative position relation between limiting sensor unit 30 and the box 1 reliably.Be assemblied at box 1 under the state of apparatus body, position skew (rocking) is inevitable slightly.Yet, use projection 5 limit slippage positions by the sensor unit 30 that as present embodiment, is arranged at apparatus main body side by the location that is arranged at box 1, thereby become reliably with the relative position relation of described size detection with bar 25, and prevent the error detection of antiquarian.

(other embodiment)

In addition, paper feed involved in the present invention is not limited to described embodiment, can carry out various changes in its purport scope.

For example, being configured to arbitrarily of apparatus body is fixed in the carton location.And the thin section structure of carton, shape or size detection use the thin section structure of bar also for arbitrarily.

As above, the present invention is useful for the paper feed that is equipped on image processing system, and is especially outstanding on the location that can make size detection with sensor becomes reliably with this aspect of error detection that prevents antiquarian.

Claims

1. paper feed, this paper feed comprises carton, this carton in the loading and unloading of image processing system main body freely and take in plurality of sheets of paper with stacked state and open,

Described paper feed is characterised in that,

Described paper feed possesses:

2. paper feed according to claim 1 is characterized in that,

At described sensor unit, dispose a plurality of actuators corresponding to antiquarian that detect with needs with predetermined distance along the direction of slip of this sensor unit.

3. paper feed according to claim 1 and 2 is characterized in that,

Described detection is rotated with the rear end confinement plate interlock of the paper that is installed on described carton with bar.