CN208079209U - Original copy feedway and image forming apparatus - Google Patents

Abstract

A kind of original copy feedway of the utility model offer and image forming apparatus, the original copy feedway includes the original copy pallet for placing original copy, detected under the original copy pallet original copy whether there is or not detection unit, and the detection original copy whether completely by separation after sensor, sensor synergism controls pickup roll working state after the detection unit and the separation, the detection unit includes at least two rotatable actuators of sensor distance arrangement after the relatively described separation, and detects the detection sensor of the actuator spinning movement respectively.The utility model uses two actuators while detecting original copy, only in the case where the detection sensor of two actuators all sends out signal, can just pickup roller be made to enter working condition, it avoids making pickup roller be in the problem under misoperation state because detecting mistake under mono signal working method, to improve transfer efficiency.

Description

Original copy feedway and image forming apparatus

Technical field

The utility model is related to it is a kind of can accurately identify original copy whether there is or not original copy feedway, and using the original copy supply The image forming apparatus of device.

Background technology

Existing office space is mostly to use a set of image forming apparatus (MFP：Multi-Functional Peripheral) using as public office equipment, image forming apparatus is acted by following steps：Original copy feedway is used In putting or conveying original copy, scanning element obtains the optical analog picture signal of original copy by exposing, and is sent to image shape At unit, image forming unit makes optical analog picture signal form electrostatic latent image on photographic department surface, and transfer section is recycled to make Electrostatic latent image is transferred to after forming toner image on the medium exported by paper feed, then is determined medium by fixation unit Movie queen is discharged to paper discharge unit.

In the prior art, original copy feedway is usually to utilize detection to whether there is the detection mode of original copy on original copy pallet The cooperation of sensor and actuator determines, i.e., so that actuator is rotated the pressure of actuator using original copy, postrotational actuating Device can detection trigger sensor, and then judge original copy whether there is or not sensor and detection sensors after the separation at original copy upstream end The original copy transportation work of Collaborative Control pickup roller.

However in use, according to actuator and its precision of circumferential component, the rotary speed of actuator can decline, Or occur to vibrate caused by the rebound of actuator, cause the detection sensor shut-in time deviation occur, although existing There is no original copy but is judged as there is the case where original copy.

Utility model content

The purpose of this utility model be to provide it is a kind of can accurately identify original copy whether there is or not original copy feedway, and using should The image forming apparatus of original copy feedway.

Specifically, the utility model provides a kind of original copy feedway, including places the original copy pallet of original copy, is mounted on institute State detected under original copy pallet the original copy whether there is or not detection unit, and the detection original copy whether completely by separation after pass Sensor synergism controls pickup roll working state after sensor, the detection unit and the separation, and the detection unit includes phase To at least two rotatable actuators that sensor distance after the separation is arranged, and the actuator rotation is detected respectively The detection sensor of action.

In the another embodiment of the utility model, a kind of image forming apparatus is provided, including：

Original copy feedway conveys original copy to be transferred；

Scanning element scans the original copy to obtain optical analog picture signal；

Image forming unit converts the optical analog picture signal to forming toner image on photographic department；

Transfer section, output after the toner image being formed on the photographic department is transferred on medium；

The original copy feedway includes the original copy pallet for placing the original copy, and institute is detected under the original copy pallet State original copy whether there is or not detection unit, and the detection original copy whether completely by separation after sensor, the detection unit Pickup roll working state is controlled with sensor synergism after the separation, the detection unit includes sensor after the relatively described separation Spaced apart at least two rotatable actuator, and the detection sensor of the actuator spinning movement is detected respectively.

The utility model uses two actuators while detecting original copy, only the detection sensor of two actuators all In the case of sending out signal, can just pickup roller be made to enter working condition, avoided under mono signal working method because detecting mistake And pickup roller is made to be in the problem under misoperation state, to improve transfer efficiency.

Description of the drawings

Fig. 1 is the image forming apparatus structural schematic diagram of one embodiment of the utility model；

Fig. 2 is the original copy feedway structural schematic diagram of one embodiment of the utility model.

Specific implementation mode

Hereinafter, the image forming apparatus that embodiment is related to is described in detail with reference made to the accompanying drawings.In addition, same place in each figure It is marked with same symbol.Definition and medium relevant " conveying direction " are by each transfer roller from paper feeding cassette towards the side of paper discharge unit To that is, using paper feeding cassette end as " upstream side ", paper discharge unit end is used as " downstream side ".In addition, definition and relevant " the conveying side of original copy To " be by original copy transfer passage from original copy pallet towards the direction of scanning element, i.e., using original copy pallet end as " upstream side ", Scanning element end is used as " downstream side "." length " refers to the distance along the original copy of " conveying direction " or the two sides of medium, " on Side " and " lower section " refer to "up" and "down" direction when image forming apparatus as shown in Figure 1 is normally positioned over ground.

Fig. 1 is the image forming apparatus structural schematic diagram of one embodiment of the utility model.

In Fig. 1, image forming apparatus 100 can be the MFP (Multi-Function as compounding machine Peripherals), the equipment such as printer or duplicator.It is illustrated by taking MFP as an example in the following description.

MFP 100 includes an ontology 11 for installing each component, and the top of ontology 11 is provided with conveying original copy Y's Original copy feedway 12 and operation panel 13.Operation panel 13 includes the operation portion 14 and touch plate type being made of various keys Display unit 15.

The scanning element 16 for reading original copy Y is provided in the lower part of original copy feedway 12, scanning element 16 is beaten by light Print head exposes to obtain the optical analog picture signal of original copy Y.It is also equipped with image forming unit 17 in ontology 11 and holds The paper feed that multiple paper feeding cassettes 18 of various sizes medium of receiving are constituted.

Image forming unit 17 includes providing the tone of yellow (Y), magenta (M), cyan (C), black (K) a variety of colors Agent box 28 (28Y, 28M, 28C, 28K), and the photographic department according to the optical analog picture signal of scanning element 16 generation image 20Y, 20M, 20C, 20K, and by the transfer of the image primary transfer on photographic department 20Y, 20M, 20C, 20K to transfer belt 21 Portion.The cleaning unit of residual toner in cleaning photosensitive drums is installed at photographic department 20Y, 20M, 20C, 20K.Each photographic department There are one photosensitive drums, cleaning unit, which generally comprises, to be arranged in the upward doctor blade of photosensitive drum shaft and cleaning knife for setting, doctor blade and Cleaning knife can be cleared up the remaining toner of photosensitive drum surface when photosensitive drums rotate.

Transfer belt 21 is erected on driven roller 32 and driven voller 33,34, and driven roller 32 is opposite with secondary transfer roller 35 to match It sets.When medium S is by between driven roller 32 and secondary transfer roller 35, secondary transfer roller 35 applies transfer voltage will be in transfer belt 21 Toner image be transferred on medium S.Toner in cleaning transfer belt 21 is provided near the driven voller 34 of transfer belt 21 Cleaner 36.

In paper feed between secondary transfer roller 35, it is equipped with the separate roller 37 for taking out the medium S in paper feeding cassette 18 and biography Roller 38 is sent, the fixing device 39 being fixed to medium S epigraphs is provided in the downstream of secondary transfer roller 35.In fixing device 39 Downstream is provided with the transfer roller 40 that medium S is discharged to paper discharge unit 41.

Further, two-sided transmitting path 42 can also be set in the downstream of fixing device 39.Two-sided transmitting path 42 makes Jie It is guided to 35 direction of secondary transfer roller after matter S reversions, to carry out printed on both sides to medium S.

As shown in Fig. 2, in an embodiment of the utility model, a kind of original copy feedway 12 is disclosed comprising Place the original copy pallet 121 of original copy Y, and under original copy pallet 121 with detect original copy Y whether there is or not detection unit 122, and The rear end of original copy Y is confirmed whether by sensor 124 after the separation of (i.e. whether original copy Y passes through completely), by being sensed after separation Device 124 and the signal of detection unit 122 can be with the working conditions of Collaborative Control pickup roller 123.Specifically detection unit 122 includes 124 spaced apart at least two rotatable actuator 1221 of sensor after relative separation, and detection actuator rotation respectively Rotate the detection sensor 1222 made.

Actuator 1221 is movably arranged on by axis pin under original copy pallet 121, under normal condition, one end of actuator 1221 The mounting surface of original copy pallet 121 is stretched out, and the other end with detection sensor 1222 for being blocked.When on original copy pallet 121 After placing original copy Y, the end that original copy Y can be by actuator 1221 higher than mounting surface is depressed, and keeps the other end of actuator 1221 opposite Axis pin installation point rotates, and detection sensor 1222 is detected the rotation of actuator 1221, and sends a signal to image shape At the control unit of device 100, whether sensor 124 and sends signal to the rear end of original copy Y by being detected after separation To the control unit of image forming apparatus 100.When image forming apparatus 100 receives the transfer enabling signal of user and detects Unit 122 detects when having original copy Y on original copy pallet 121 that control pickup roller 123 is started to work.

When not having original copy Y on original copy pallet 121 after so that actuator 1221 is restored to original position, actuator 1221 restores to inspection Blocking for sensor 1222 is surveyed, is shown on current original copy pallet 121 without original copy Y.Sensor 124 detects original copy Y after separation Rear end by signal, show original copy Y completely by pickup roller 123, then the control list of image forming apparatus 100 Member makes pickup roller 123 be stopped.

In the present embodiment, two actuators 1221 are used while detecting original copy Y, only in two actuators 1221 Detection sensor 1222 all send out signal in the case of, pickup roller 123 can just enter working condition；When only wherein one When a detection sensor 1222 sends out signal, pickup roller 123 all cannot be introduced into working condition.It is possible thereby to which mono signal is avoided to work Pickup roller 123 is set to be in the problem under misoperation state because detecting mistake under mode, to improve transfer efficiency.

In present embodiment, specific detection process is completed by the control unit of image forming apparatus 100, and control unit exists In scanning process, the state of two detection sensors 1222 is monitored always.In the following description, to close on sensor after separation 124 detection sensor 1222 is first sensor, is the second biography with the detection sensor 1222 far from sensor 124 after separation Sensor, control unit judge to be empty (not have on original copy pallet 121 when not receiving the time point of the second sensor signal Next original copy Y), pickup roller 123 is acted without next paper supply.

According to the direction of original copy Y conveyings and progress, earlier than first sensor at the time of second sensor can't detect signal At the time of can't detect signal, so, even if paper scrap etc. enters the bearing portion of actuator 1221 and makes slow movement, next The paper supply of original copy Y judges that moment, second sensor also can accurately react the presence or absence of original copy Y situations.

In an embodiment of the utility model, the actuator 1221 of sensor 124 is arranged after can closing on separation In the downstream side of pickup roller 123 because when judging whether original copy Y, the position of original copy Y need in can reliably by At the position of conveying.It ought be judged as in the presence of having original copy Y, be not in the position that pickup roller 123 can not be contacted with original copy Y.

In the another embodiment of the utility model, because pickup roller 123 is typically mounted at the original of original copy pallet 121 The top of the abutment of original text Y only just declines and is contacted with original copy Y at work, therefore, the actuator with first sensor 1221 may be mounted at the abutment position corresponding position of pickup roller 123 and original copy Y, and the original copy Y after abutting can be more readily detected out.

Actuator 1221 far from sensor 124 after separation can be located at the upstream side of pickup roller 123.To improve to original copy The detection result of Y, actuator 1221 and the abutment of original copy Y far from sensor 124 after separation detach rear sensor with closing on The distance between 124 actuator 1221 and the abutment of original copy Y are less than the length of business card, and business card here refers to that size is 90*55 millimeters or so of conventional business card, the length for being less than business card are to be less than 90 millimeters, it is therefore an objective to be placed on conventional business card When on original copy pallet 121, two actuators 1221 can be also triggered simultaneously.

Specific detection sensor 1222 can be photoelectric sensor.

When specific installation, two actuators 1221 can be located at a row, and on the center line in original copy pallet 121.

Although aforementioned embodiments are illustrated with the structure of two actuators, in other embodiments, More than two actuators can be set in the case of same operation principle.In the case where installing multiple actuators, may be used also Two actuators are arranged in same a line of a row.

Although the description of the several embodiments of the utility model, but these embodiments are intended only as example and propose , it is not intended to limit the scope of the utility model.These new embodiments can be implemented with various other ways, In the range of not departing from the main idea of utility model, various omissions, displacement, combination and change can be carried out.These embodiments It is all contained in the scope of the utility model and main idea with its deformation, and it is new to be contained in this practicality recorded in claims In type and its equivalency range.

Claims (10)

1. a kind of original copy feedway, including the original copy pallet of original copy is placed, detect the original under the original copy pallet Original text whether there is or not detection unit, and the detection original copy whether completely by separation after sensor, the detection unit and institute Sensor synergism controls pickup roll working state after stating separation, which is characterized in that the detection unit includes the relatively described separation At least two rotatable actuators of sensor distance arrangement afterwards, and the detection of the actuator spinning movement is detected respectively Sensor.

2. original copy feedway according to claim 1, which is characterized in that

The actuator for closing on sensor after the separation is located at the downstream of the pickup roller.

3. original copy feedway according to claim 1, which is characterized in that

The actuator far from sensor after the separation and the abutment of the original copy described detach rear sensor with closing on The distance between the abutment of the actuator and the original copy be less than the length of business card.

4. original copy feedway according to claim 1, which is characterized in that

The actuator is located on the center line of the original copy pallet.

5. original copy feedway according to claim 1, which is characterized in that

The detection sensor is photoelectric sensor.

6. a kind of image forming apparatus, including：

Original copy feedway conveys original copy to be transferred；

Scanning element scans the original copy to obtain optical analog picture signal；

Image forming unit converts the optical analog picture signal to forming toner image on photographic department；

Transfer section, output after the toner image being formed on the photographic department is transferred on medium；

It is characterized in that, the original copy feedway includes the original copy pallet for placing the original copy, it is mounted on the original copy pallet The lower detection original copy whether there is or not detection unit, and the detection original copy whether completely by separation after sensor, it is described Sensor synergism controls pickup roll working state after detection unit and the separation, and the detection unit includes the relatively described separation At least two rotatable actuators of sensor distance arrangement afterwards, and the detection of the actuator spinning movement is detected respectively Sensor.

7. image forming apparatus according to claim 6, which is characterized in that

The actuator for closing on sensor after the separation is located at the downstream of the pickup roller.

8. image forming apparatus according to claim 6, which is characterized in that

The actuator far from sensor after the separation and the abutment of the original copy described detach rear sensor with closing on The distance between the abutment of the actuator and the original copy be less than the length of business card.

9. image forming apparatus according to claim 6, which is characterized in that

The actuator is located on the center line of the original copy pallet.

10. image forming apparatus according to claim 6, which is characterized in that

The detection sensor is photoelectric sensor.