JPH05323718A - Image forming device - Google Patents

Abstract

PURPOSE:To obtain transfer sheets, on which recording has been carried out, in a state of being stacked in such a manner that the first page is the top, the second page next, then the third page and so on from the top with the image sides facing up even when image formation is started from the first page. CONSTITUTION:An image forming device is provided with: a tray 20 for use in temporary storage; feed means 33 and 36 for feeding a transfer sheet, on which image formation has been carried out, to the tray 20; sending means 24, 27, 31, 33 and 36 for sending the transfer sheet in the tray 20 out of the machine; a feed control means for stacking neatly the transfer sheets of the specified number, which have finished image formation, on the tray 20 via the feed means 33 and 36 one after another in time; and an ejection control means 53 for sending the transfer sheets, stacked on the tray 20, via the sending means 24, 27, 31, 33 and 36, out of the device from the top one in order. Thus, since they are ejected out of the device from the last page transfer sheet, it is not necessary for a user to change the page order so that the top one is the first page.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine, a printer and a facsimile.

[0002]

2. Description of the Related Art In an image forming apparatus of this type, for example, the most typical copying machine, a transfer paper fed from a cassette is sent toward a photoconductor and the upper surface thereof is made to follow the surface of the photoconductor so that an image (toner) is formed on the photoconductor. -Image) is transferred, and the transfer paper is directly fed and heated and fixed. When the fixing is completed, it will be sent to the discharge port outside the machine.
The transfer paper that has exited the discharge port is fed onto, for example, a discharge tray outside the discharge port. When a document is manually placed on the contact glass, the document is usually placed on the contact glass from the first page, and in this case, the first copy with an image (upward) on the upper surface of the discharge tray is the first copy. The pages are sequentially stacked. In this case, when the copying of all the originals is completed, the user needs to replace the pages by turning the pages so that the uppermost part is the first page. If an automatic document feeder is used, it feeds the document from the final page (the bottom document) onto the contact glass, so there is no need to replace the resulting copy page.

An invention of aligning pages of ejected transfer sheets is presented in Japanese Patent Application Laid-Open No. 1-295272. However, when copying from the first page manually, the ejected transfer sheet is also transferred as described above. Paper pages are 1, 2, 3, from the bottom
4, ... On the other hand, when making a copy using an ARDF (automatic document feeder) that sets the original with the first page facing up, 1,2,3,4, ... from the top are stapled using a sorter with a fixed staple position. When doing so, there is a complication that the stapling position of the transfer paper is different from that when ARDF is used or the setting direction of the original has to be changed.

[0004]

According to the present invention, even when the image formation is started from the first page, the first side, the second side, the third side, ... The purpose is to obtain overlapping recorded transfer sheets.

[0005]

An image forming apparatus according to the present invention comprises a tray (17 to 1) for storing transfer sheets for image formation.
9) and the image forming processing passage (11/20) from the tray (17 to 29).
In addition to the means (21 to 27) for feeding the transfer paper to the (interval), the temporary holding tray (20) for storing the transfer paper at least one side of which image formation has been completed and this tray (20) In an image forming apparatus provided with a feeding means (33, 36) for feeding the transfer paper on which image formation has been completed, a sending means (24, 27, for sending the transfer paper of the tray (20) for temporary holding to the outside of the machine. 31,33,36); The designated number of transfer sheets after image formation are fed by the feeding means (33,36,36).
Feed control means (5) for stacking stock in order from the first one in time series on the temporary holding tray (20) via the (36).
3); and discharge for transferring the stacked and stacked transfer papers on the holding tray (20) to the outside of the machine in order from the upper part via the sending means (24, 27, 31, 33, 36) Control means (53);
It is characterized by including. Symbols in parentheses indicate corresponding elements in the embodiments shown in the drawings and described later.

[0006]

When the image formation is performed from the first page, the feeding control means (53) finishes the image formation from the transfer sheet of the first page on the tray (20) for temporary holding. Stack the transfer paper. Then, the discharge control means (53) sends the stacked and stacked transfer papers on the temporary holding tray (20) out of the machine in order from the upper one. As a result, the transfer paper of the final page is discharged to the outside of the machine, and the transfer paper of the final page is stacked on the discharge tray outside the machine, for example. This allows the user to
There is no need to replace the page by turning the image-formed transfer paper so that the uppermost part is the first page.

Other objects and features of the invention of the present application will become apparent from the following description of embodiments with reference to the drawings.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an outline of a mechanical portion of an embodiment of the present invention. This embodiment is a copier. Slit exposure device 13
Illuminates the original set on the original placing table (contact glass) 38 with the light source 40. The reflected light is the first mirror 41, the second mirror 42, the third mirror 43, and the lens 4.
Is irradiated onto the photoconductor 11 via the fourth and fourth mirrors 45,
The original image is scanned by the movement of the light source 40 and the first to third mirrors 41 to 43 to form an original image on the photosensitive drum 1.
1 is exposed.

The photosensitive drum 11 is rotationally driven by the main motor and uniformly charged by the charging corona discharger 12, and thereafter, the charges other than the electrostatic latent image forming area are removed by the eraser 14, and the slit exposure device 13 is provided. Thus, the original image is exposed to form an electrostatic latent image, and a toner is applied to the electrostatic latent image by the developing device 15. That is, a visible image is formed. Further, the photoconductor drum 11 is neutralized by the pre-transfer static eliminator 16. On the other hand, the transfer paper is the first tray 17, the second
Selected one of tray 18 and third tray 19
The sheet is fed by the calling rollers 21 to 23 and is conveyed to the registration rollers 27 by the sheet conveying units 25 and 26, and is temporarily stopped. Then, this transfer paper is applied to the registration roller 2
7 is sent between the photoconductor drum 11 and the transfer corona discharger 28, and the visible image on the photoconductor drum 11 is transferred to the transfer paper by the transfer corona discharge 28. The transfer paper is separated from the photoconductor drum 11 by the separation corona discharger 29 and the separation claw 30. Next, the transfer sheet is conveyed by the conveying belt 31, the image is fixed by the fixing device 32, and in the normal discharge mode, the transfer sheet passes through the reversing unit 33 as it is and is discharged to the sorter 34. In addition, the photosensitive drum 11
After the transfer paper is separated, it is cleaned by the cleaning device 35 and discharged by the discharge lamp 37 to prepare for the next copy cycle.

FIG. 9 shows an outline of the electric components of the copying machine shown in FIG. 1, and FIG. 10 shows an outline of the main control operation of the CPU 53 shown in FIG. In a copying machine having the mechanism shown in FIG. 1 and the electrical equipment shown in FIG. 9, the ARDF 39 having the function of a pressure plate is opened (the front side is raised) and the user places a sheet document or book on the document table 38. In the manual copy copy for placing the original, a temporary stock mode is added to stock the transfer paper on the double-sided tray 20 once before the transfer paper is ejected to the outside of the machine. -There is a double-sided copy stock mode. These contents will be described below.

(1) Single-sided copy stock mode (FIGS. 2 and 3 and steps 1 to 3-5-6-7 / 2-14-15-16 in FIG. 10): Original 2
An example is a sheet, two repeats (designated number), and the first tray 17 sheet feed. When the first document such as a book document is manually set on the document table 38 and the copy start key of the operation unit 50 is pressed, the pressure plate opening / closing sensor 51 causes the pressure plate (ARD
The CPU 53 detects that the copy start key has been pressed with the F39) open, and automatically enters the single-sided copy stock mode in which the transfer paper is once stocked in the double-sided tray 20 (steps 1 to 3-5 in FIG. 10). -6-7). The transfer paper leaves the fixing device 32 after a series of copying cycles, and is guided to the double-sided tray 20 by the switching unit 36.
The formed image surface faces down on the tray 20 (FIG. 2). In this state, in the double-sided tray 20, two transfer sheets of the first original document and a second transfer sheet of the second original document 2 are placed.
Sheets are stored with the copy side down. Here, when the user inputs a request for ejecting the transfer paper from the operation unit 50,
The fixing temperature of the fixing device 32 is set low, and the double-sided tray 2
From the upper paper in 0, that is, the transfer paper of the second original, sequentially passes through the normal transport path and is discharged to the sorter 34 with the copy surface upward (sorting, stapling, etc. are performed (FIG. 3 &.
Steps 1-2-14 to 16 in FIG. 10). When this discharge is completed, the copying machine goes into a standby state. When any key of the operation display unit is operated in the standby state, the CPU 53 changes the fixing target temperature to the copy processing target temperature. That is, the fixing temperature is set high (step 1 in FIG. 10).

(2) Duplex copy stock mode (Figs. 4-8 &
Steps 1 to 3-5-8-7 / 2-14-15-16) in FIG. 10: Two-sided copying, two originals, two repeats, and the first tray 17 paper feed example. When the first sheet such as a book document is set on the document table 38 and the copy start key of the operation unit 50 is pressed, the CPU 53 detects that the platen open / close sensor 51 has pressed the copy start key while the platen is open. Then, the double-sided copy stock mode in which the transfer paper is once stocked in the double-sided tray 20 is automatically set. The transfer paper passes through the fixing device 32 through a series of copy cycles, is reversed by the reversing unit 33, is guided to the double-sided tray 20 by the switching unit 36, and the double-sided tray 20 stores the first original document. Two sheets of surface transfer paper are stored with the copy side facing up (Fig.
4 / Steps 1 to 3-5-8 to 10-7 in Figure 10). Double-sided tray 2 when the first original is inverted and the copy start key is pressed
The front surface transfer paper in 0 is fed, passes through the fixing device 32 through a series of copy cycles, the front and back are reversed by the reversing unit 33, and the switching unit 36 stops the bearing by the stopper 60 in the double-sided tray 20. After the paper feeding operation of the double-sided tray 20 is completed, the trailing edge fence 61 moves and is stocked again (steps 1 to 3-5-8-11 to 13- of FIG. 5, 6 / FIG. 10).
7). In this state, the double-sided tray 20 accommodates two sheets of transfer paper with the back side (second page) of the first original document facing up.

Similarly, when the operation is performed on the second original, two sheets of transfer paper are placed in the double-sided tray 20 with the back (fourth page) of the second original from the top. Back of the manuscript of the eye
Two sheets of transfer paper with the (page) up are stored (Fig. 7).

When a request for discharging the transfer paper is input from the operation unit 50, the fixing temperature of the fixing device 32 is set to a low value, and the paper on the double-sided tray 20, that is, the transfer paper of the second original is normally transferred in sequence. The sheets are discharged through the transport path of the sorter 34 with the front surface (first page) facing up, and sorting, stapling and the like are performed (step 1-2- of FIG. 8 / FIG. 10).
14-16).

According to the embodiment described above, the following effects can be obtained. (1) Even when copying a book original in which the ARDF 39 cannot be used, the transfer paper can be discharged in the same direction and order as when the ARDF 39 is used. (2) Since the double-sided tray 20 is also used as a temporary holding tray, a dedicated tray is not required as a temporary holding tray, and the device can be downsized.

(3) Double-sided tray 2 for copying the back side
Even while the transfer paper is being fed from 0, it is possible to restock the transfer paper that has been copied on both sides to the double-sided tray 20 without breaking the order of the transfer papers stored in the double-sided tray 20. Becomes

(4) When the transfer paper is ejected from the double-sided tray 20 to the outside of the machine, the transfer paper passes through the fixing device 32, but since the fixing temperature is set low, image crushing and roll of the transfer paper can be avoided. It also saves power in the copier.

(5) A pressure plate (AR
The CPU 53 detects that the DF39) is opened and the copy start key is pressed, and automatically enters the copy stock mode in which the transfer paper is once stocked in the double-sided tray 20. Therefore, the operation for designating this mode is performed. It is not necessary, and if this specification operation is forgotten and the copy start is performed, the inconvenience such as the necessity of page replacement by turning the copied transfer paper is avoided.

[0019]

According to the present invention, the user does not need to replace the page by turning the image-formed transfer paper so that the uppermost part is the first page.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of a mechanism of an embodiment of the present invention.

FIG. 2 is a single-sided copy stock mode of the copying machine shown in FIG.
FIG. 3 is a block diagram showing a conveyance path for performing image formation of transfer paper and stocking to a double-sided tray 20 in the printer.

FIG. 3 is a single-sided copy stock mode of the copying machine shown in FIG.
FIG. 3 is a block diagram showing a discharge path of the transfer paper, which has finished image formation and is stocked in the double-sided tray 20, in the printer.

4 is a double-sided copy stock mode of the copying machine shown in FIG.
FIG. 3 is a block diagram showing a conveyance path for performing image formation on the first surface of the transfer paper and stocking on the double-sided tray 20 in the printer.

5 is a double-sided copy stock mode of the copying machine shown in FIG.
FIG. 6 is a block diagram showing a transport path for performing image formation on the second side of transfer paper stocked in the double-sided tray 20 and restocking on the double-sided tray 20 in the printer.

6 is a double-sided copy stock mode of the copying machine shown in FIG.
Rear end fence 6 for placing the transfer paper on the double-sided tray 20 on which the image formation of the first surface and the second surface is completed at the delivery position.
It is a block diagram which shows the forward movement of 1.

7 is a double-sided copy stock mode of the copying machine shown in FIG.
Rear end fence 6 for placing the transfer paper on the double-sided tray 20 on which the image formation of the first surface and the second surface is completed at the delivery position.
It is a block diagram which shows the backward movement of 1.

8 is a double-sided copy stock mode of the copying machine shown in FIG.
FIG. 3 is a block diagram showing a discharge path of the transfer paper, which has finished image formation and is stocked in the double-sided tray 20, in the printer.

FIG. 9 is a block diagram showing a schematic configuration of an electrical component section of the copying machine shown in FIG.

10 is a flowchart showing an outline of a part of control operation of the CPU 53 shown in FIG.

[Explanation of symbols]

11: Photosensitive drum 12: Corona discharge
Device 13: Slit exposure device 14: Eraser 15: Developing device 16: Static elimination before transfer
Container 17: 1st tray 18: 2nd tray 19: 3rd tray 20: Double-sided tray 21: Calling roller 22: Calling tray
B 23: Calling roller 24: Calling roller
25: Paper transport unit 26: Paper transport unit 27: Register roller 28: Corona discharge
Device 29: Corona Discharger 30: Separation Claw 31: Conveyor Belt 32: Fixing Device 33: Reversing Unit 34: Sorter 35: Cleaning Device 36: Switching Unit 37: Erasure Lamp 38: Document Placement Table 39: ARDF 40: light source 41: first mirror 42: second mirror 43: third mirror 44: lens 45: fourth mirror 50: operation unit 51: pressure plate open / close sensor 53: CPU 60: stopper 61: rear Edge fen
Su

Claims (5)

[Claims] 1. A tray for accommodating transfer paper for image formation and a means for feeding the transfer paper from the tray to an image forming processing passage, and accommodating transfer paper at least one side of which image formation has been completed. In an image forming apparatus including a temporary holding tray for storing and a feeding means for feeding the transfer paper on which the image formation is finished, a sending means for sending the transfer paper in the temporary holding tray to the outside of the machine; A feed control means for stacking and stacking a designated number of transfer paper sheets on which images have been formed on the tray for temporary holding via the feed means in a time series in order from the first one. An image forming apparatus, comprising: discharge control means for sequentially sending the stacked and stacked transfer papers on a temporary holding tray to the outside of the apparatus via the sending means. 2. A tray for accommodating transfer paper for image formation and a means for feeding the transfer paper from the tray,
In double-sided recording, a double-sided processing tray for temporarily accommodating a transfer sheet on which one side of the image has been formed, a feeding means for feeding the transfer sheet on which one side of the image has been formed, and an image of the transfer sheet on this tray. In an image forming apparatus having means for re-feeding to a forming processing path, a sending means for sending the transfer paper from the double-sided processing tray to the outside of the machine; a designated number of transfer papers for which image formation has been completed Feeding control means for stacking and stocking the double-sided processing tray in order from the first one in time series; and transfer paper stacked and stocked on the double-sided processing tray via the sending means. An image forming apparatus, comprising: an ejection control unit that sequentially sends the sheets to the outside of the apparatus. 3. A stopper for stopping the transfer sheet fed onto the temporary holding tray before the delivery standby position on the tray, and a side of the transfer sheet opposite to a side of the transfer sheet which is in contact with the stopper. The image forming apparatus according to claim 2, further comprising a trailing edge fence and a fence driving unit that pushes the trailing edge fence in a direction toward the delivery standby position. 4. A tray for accommodating transfer paper for image formation and a means for feeding the transfer paper from the tray to an image forming processing passage, and accommodating transfer paper at least one side of which image formation has been completed. Image forming apparatus including a temporary holding tray and a feeding unit that feeds the transfer sheet on which image formation is completed, and a fixing unit that heats and fixes the visible image medium formed on the transfer sheet. In the delivery means for sending the transfer paper from the temporary holding tray to the outside of the machine; a designated number of transfer papers after image formation are transferred to the temporary holding tray via the feeding means. Feeding control means for stacking and stocking in order from the first one in the series; discharge control means for sending out the stacked and stocked transfer papers on the temporary holding tray to the outside of the apparatus in order from the upper part through the sending means. ; O An image forming apparatus comprising: a; beauty, means for lowering the fixing temperature of the fixing means between the delivery to the outside. 5. A tray for accommodating transfer paper for image formation and a means for feeding the transfer paper from the tray to an image forming processing passage, and accommodating transfer paper at least one side of which image formation has been completed. A tray for temporary holding and a feeding means for feeding the transfer paper after the image formation to this tray, and a member for pressing an original on the contact glass and a position where this member presses. An image forming apparatus having means for detecting whether it is in the retracted position, sending means for sending the transfer paper in the temporary holding tray to the outside of the machine; detecting that the detecting means is in the retracted position When a predetermined number of sheets, the designated number of transfer sheets that have undergone image formation are stacked and stocked in order from the first one in time series on the temporary holding tray via the feeding means; Oh An image forming apparatus comprising: a; beauty, discharge control means for sending to the outside in order the transfer paper stacked stock on the tray for temporary storage of that of the upper via the delivery means.