JPS63139830A - Picture processing device - Google Patents

Abstract

PURPOSE:To obtain a picture processing device of high reliability with a less chance generating a sheet jam, by providing the third route which supplies a sheet, accommodated in a containing part, to a picture forming part. CONSTITUTION:When copying is performed on both sides, a sheet, performing copying in a copying machine 5, is supplied to an intermediate tray 107 through an inverting route 105, and the sheet, received in said intermediate tray 107, is supplied to a picture forming part 7 through a paper feed route 111. While when the copying is synthesized, the sheet, conveyed in the inverting route 105, is supplied to the intermediate tray 107 further through a conveying route 109, and the sheet, received to the intermediate tray 107, is supplied to the picture forming part 7 through the paper feed route 111 similarly when the copying is performed on the both sides. Accordingly, the route in the time of both-side copying with a high frequency of use decreases shorter than the route in the time of synthetic copying, and a device improves its reliability by decreasing a chance of generating a jam of the sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing apparatus equipped with an image forming apparatus such as a double-sided copying machine, a laser printer, or a liquid crystal printer that forms images on both sides of a sheet.

[Conventional technology]

2. Description of the Related Art As image forming apparatuses, such as copying machines, have become more multi-functional, many products have been commercialized that are equipped with double-sided copying functions and composite copying functions.

This double-sided composite copying machine has a photosensitive drum 20 as shown in FIG.
A paper ejection path 20 that ejects the sheet copied in step 1 as is.
3, a switch pack path 205 that reverses the conveyance direction of the copied sheet F, a composite path 207 that reverses the front and back of the copied sheet, and a sheet conveyed through the switchback path 205 or the composite path 207 is temporarily stored. an intermediate tray 209 that feeds the sheets stored in the intermediate tray 209;
The sheet sent out is turned upside down and placed on the photosensitive drum 2.
01.

When making single-sided copies using this double-sided composite copying machine, the sheet copied by the photosensitive drum 201 is directly transferred to the paper ejection path 20.
Discharge from 3.

In addition, in the case of double-sided copying, the conveyance direction of the sheet copied on one side is reversed in the switch pack path 205, and then stored in the intermediate tray 209. By copying, you are copying on both sides of the sheet.

Furthermore, in the case of composite copying, the sheet that has been copied on one side is stored in the intermediate tray 209 via the composition path 207, is supplied to the drum 201 through the paper feed path 213, and is copied again on the previously copied side. By doing so, synthetic copying is performed.

[Problem that the invention seeks to solve]

However, switchback path 205 is longer than composite path 207 even though there are more opportunities to perform double-sided copying than to perform composite copying. For this reason, there were many opportunities for sheets to become jammed.

[Purpose of the invention]

This invention provides a highly reliable image processing device that can make the path for forming images on both sides of a sheet shorter than the path for forming images multiple times on the same sheet surface, and has less chance of sheet jams. The purpose is to obtain.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

<Configuration> (Overall configuration) The image processing device 1 shown in Figure 1 consists of a mounting table 2 and this
A sheet carrier wave RA4 placed on the a table 2, and an image forming device, for example, a copying device 8, attached to this sheet conveying device 4.
! 5.

(Configuration of Copy 1f15) Copy fi5 includes a platen 77 with lath contacts on which a document is set, a document cover 75 attached to the back side with a hinge so that it can be closed, an image forming section 7, and a paper feed cassette 9. a taking-in section 11 in which a sheet is set, paper feeding rollers 13 and 15 that send out sheets from the paper feeding cassette 9 set in this taking-in section 11, and these paper feeding rollers 21.
3. Align the leading edge of the sheet fed from the sheet feeding path 17, 19.21 with the sheet feeding path 17°19 that conveys the sheet sent out in step 15 and the sheet feeding path 21 that conveys the sheet from the sheet conveyance 1g14. Registration roller 55,
It is provided with a conveyance belt 57 that conveys the sheet subjected to the Rennost correction by the registration roller 55 to the image forming section 7, and a discharge roller 95 that discharges the sheet on which an image has been formed in the image forming section 7.

The image forming section 7 includes a slit illumination device i79 that is movable in the left and right direction along the platen 77, and two movable reflection pins 81 and 83 that guide a light image of the image of the document illuminated by the slit illumination device W179. an exposure optical device equipped with a lens 85 and two fixed reflective fi 87° 89; a photosensitive drum 59 that forms an electrostatic latent image corresponding to the image of the original on the outer peripheral surface exposed by the exposure optical device;
A charging device fi61, an unnecessary charge eraser 63, a developing device r1165 that visualizes the electrostatic latent image formed on the photosensitive drum 59 with toner, and a transfer device 67 that transfers the toner on the photosensitive drum 59 to a sheet. Separation charging device
169, a separation claw 71 for separating the sheet from the photosensitive drum 59, a drum cleaner 73, a conveyance roller 91, and a fixing device fW93.

Incidentally, in order to perform composite copying, toners of a plurality of colors are provided, and copies are made using toners of designated colors.

(Configuration of Sheet Conveyance Device 4) The sheet conveyance device 4 includes a sheet discharge path 101 for discharging sheets discharged from the copying machine 8!5, and a stray paper tray 103 for storing sheets discharged from this sheet discharge path 101. and a reversing path (
a first path) 105, and a storage section, for example, an intermediate tray 1, which stores sheets conveyed through this reversing path 105 from one side.
07, a conveyance path (second path) 109 that supplies the sheet conveyed through the reversing path 105 to the intermediate tray 107 from the other side of the intermediate tray 107, and a conveyance path (second path) 109 that supplies the sheet conveyed through the reversing path 105 to the intermediate tray 107, and a conveyance path (second path) 109 that supplies the sheet conveyed through the reversing path 105 to the intermediate tray 107; A paper feed path (third path) 111 that supplies paper to the image forming section 7 is provided. Note that a part of the transport path 109 and the paper feed path 111 is formed by a common path 117, and a switching id 145 is provided at the branching portion.

The paper ejection path 101 includes a transport roller 102 and a paper ejection roller 1.
04 is provided. Further, a switching guide 108 is provided at the branching portion to the reversing path 105.

Further, the transmission path 105 is provided with a conveyance row 2106. Further, a switching id 143 is provided at the branch point between the reversing path 105 and the common path 1]7.

The intermediate tray 107 has a first tray movable back and forth at the front end and the rear end.
and second displacement means, for example stops 113, 115, are provided. For example, racks 112, 114 are attached to these stoppers 113, 115 as shown in FIG.
It is designed to be driven by. In addition, rack 112
, 114 are provided at positions where they do not interfere with each other.

In addition, in the reversing path 105gA on the intermediate tray 107,
A vertically movable paper feeding means, such as a paper feeding roller 119, is provided to feed the sheets accommodated in the intermediate tray 107 from the uppermost paper to the common path 117.

Further, the paper feed path 109 is provided with a paper discharge roller 141 .

Further, the paper feed path 111 including the common path 117 includes an id 120 that guides the sheet, and a separating means 147 that separates the sheet sent out by the paper feed roller 119 into one sheet.
Ids 123 and 125 that guide the sheets separated by this separation means 147, conveyance rollers 124 and 126,
127 are provided.

The separation unit 147 includes, for example, a paper feed roller 149 that rotates in the sheet conveyance direction, and a separation roller 15 that rejects a sheet that follows the sheet that is conveyed by the paper feed roller 149.
1.

Operation> In such a configuration, this device operates as follows.

(Double-sided copying operation)...Refer to Figure VI2 First, open the document cover 75 in Figure fjS1 and press the platen 7.
7, and set the copying conditions.

The stopper 113 moves in the second direction (A) according to the size of the copy sheet specified by the setting of the copy conditions.

In this state, when the copy button is pressed, a sheet is fed from the paper feed cassette 9 according to its size, and the image forming section 7 copies the sheet. The copied sheet is discharged by a paper discharge roller 95 and supplied to a reversing path 105 by a switching id 108. This sheet is in intermediate tray 10
7, the tip is regulated by a stopper 113,
It is set as shown in tlS2 diagram (B).

When the above operations have been performed for the set number of sheets, the original on the platen 77 is turned over or the next original is set, and the intermediate tray 107
When the preparation for copying is completed, the paper feed roller 119 falls onto the sheet and rotates to feed out the uppermost paper, as shown in FIG. 2(C).

As shown in FIG. 2(D), the leading edge of this sent-out sheet rises along the ID 120, is separated into one sheet by the separating means 147, and crosses the paper discharge port of the reversing path 105 to the common path 117. supplied to The direction of this sheet is changed by an id 123, and conveyor rollers 124, 126, 127
The paper is conveyed through the paper feed path 111 by the paper feed path 111 and supplied to the paper feed path 21 of the copying machine 5.

Then, copying is performed on the back side of the sheet in the image forming section 7,
The paper is discharged from the paper discharge path 101 to the paper discharge tray 103 . This operation is repeated until there are no more sheets stored in the intermediate tray 107.

(Synthetic copying operation) See FIG. 3. As in the case of double-sided copying, an original is set on the platen 77 and copying conditions are set. At this time, the toner color is also specified. The stopper 115 moves as shown in FIG. 3<A) according to the size of the copy sheet designated by the setting of the copy conditions. In this state where the switching guides 143 and 145 are also switched, when the copy button is pressed, the copy is made on the sheet fed from the paper feed cassette 9 according to the size, as in the case of double-sided copying, and transferred via the reversing path 105. Then, as shown in FIG. 3(B), the paper is conveyed along the common path 117 and supplied to the intermediate tray 107 from the conveyance path 109.

When the above operation is performed for the set number of sheets, the stoppers 113 and 115 are moved to the left as shown in FIG. 3(C). Also,
The next document is set on the platen 77, and the toner color is designated.

When this preparation for copying is completed, the paper feed roller 119 falls onto the sheet and rotates to feed out the uppermost paper as shown in FIG. 3(D).

This sent out sheet is separated into one sheet by the separating means 147 and supplied to the paper feed path 21 from the common path 117.

Then, the copy surface of the sheet previously copied in the image forming section 7 is covered with toner of a different color, and the sheet is discharged from the paper discharge path 101 to the Ji# paper tray 103.

This operation is performed until there are no more sheets stored in the intermediate F-lay 107.

<Effects of Embodiment> According to the embodiment described above, there is a reversing path (first path) 105 for reversing the front and back sides of a sheet copied by the copying machine 5, and a sheet conveyed through this reversing path 105 is transferred to one side. The intermediate tray 107 accommodates sheets from the other intermediate tray 107, and the intermediate tray 107 accommodates sheets conveyed through the reversing path 105 from the other intermediate tray 107.
a conveyance path (second path) 109 having a common path 117 that supplies the sheets to the image forming unit 7; Since a third path) 111 is provided, during double-sided copying, the sheet copied by the copying machine 5 passes through the reversing path (first path) 105 to the intermediate tray 111.
The sheets stored in the intermediate tray 107 are supplied to the image forming section 7 via a paper feed path 111. Further, during composite copying, the sheet conveyed through the reversing path 105 is further conveyed through the conveying path 109 to the intermediate tray 107.
The sheets stored in the intermediate tray 107 are supplied to the image forming section 7 via the paper feed path 111 in the same manner as in the case of double-sided copying.

Therefore, the path for double-sided copying, which is frequently used, is shorter than the path for composite copying, reducing the chances of sheet jams and improving the reliability of the apparatus.

In addition, the transport path 109 and the paper feed path 111 are connected to the common path 11 without providing a switchback path as in the conventional case.
7, some parts are made common, so the path becomes compact as shown in FIG. 1, and miniaturization is possible.

Furthermore, since the stoppers 113 and 115 are designed to move to positions according to the sheet size when storing sheets in the intermediate tray 107, alignment during sheet storage is good.

[Modified example]

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and for example, the following modifications are possible.

(1) In the above embodiment, the copying machine 5 and the sheet conveying device 4
Although the image processing device 1 and the image processing device 1 are shown as separate bodies, the two may be integrated.

(2) In the embodiment described above, the sheets stored in the intermediate tray 107 are supplied to the image forming unit 7 from the reversing path 105 side, but the sheets may be supplied to the image forming unit 7 from the paper discharge row 2141 side. .

〔Effect of the invention〕

In summary, the present invention provides an image processing apparatus that stores a sheet on which an image has been formed in an image forming section in one storage section and then supplies the sheet to the image forming section again to form an image. a first path for supplying a sheet with an image formed thereon to the storage section from one side; a second path for supplying a sheet on which an image has been formed in the image forming section to the storage section from the other side; Since the third path for supplying the sheets stored in the storage section to the image forming section is provided,
The path for forming images on both sides of the sheet is shorter than the path for forming images on the same sheet surface multiple times, and it is possible to obtain an image processing device with excellent reliability and less chance of sheet jamming.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of this invention.
FIG. 1 is a diagram showing the overall configuration of the image processing apparatus, FIG. @Figure 5 is an explanatory diagram of the prior art. 1... Image processing device 2... Mounting table 4...
Sheet conveyance device 5... Copying 8!7... Image forming section] 01... Paper discharge path 105... Reversing path
107... Intermediate tray 109... Conveyance path
111...Feed IA path 113,115...Stopper 119...Paper feed roller Patent applicant Japan ##Mitsukogyo Co., Ltd.' Figure + Figure 5

Claims (3)

[Claims] (1) In an image processing apparatus that stores a sheet on which an image has been formed in an image forming section in a storage section and then supplies the sheet to the image forming section again to form an image, a first path for supplying the sheet with an image formed in the image forming section to the storage section from the other side; and a third path for supplying sheets to the image forming section. (2) The image processing apparatus according to claim 1, wherein the second route and the third route are partially common. (3) In the image processing apparatus according to claim 1, the third path includes a separating means for separating the sheets supplied from the storage section to the image forming section into one sheet. An image processing device characterized by: