JPS6022143A - Electrophotographic recording device - Google Patents

Abstract

PURPOSE:To make it possible to use two kinds of transfer paper, namely, a cut sheet and a continuous sheet by selecting two kinds of transfer means with turning to bring the selected means to the position facing a photosensitive drum. CONSTITUTION:A cut sheet 6 is fed from a cassette F, and a toner image on a photosensitive drum 1 is transferred onto this sheet 6 by a transfer charger D and is fixed by a fixing device L, and the sheet 6 is ejected onto an eject tray 2. When transfer to a continuous sheet 30 is instructed by the signal from a form feed selecting switch or a facsimile receiver word processor computer, a guide plate 12 is turned to displace the transfer charger D downward, and a transfer roll E is brought to the position facing the photosensitive drum 1 by turning of an arm, and the toner image is transferred to the continuous sheet 30. A continuous sheet carrying mechanism 39 can be pulled out to the side from a copying machine body.

Description

Detailed Description of the Invention Technical Field The present invention relates to an electronic method for forming an electrostatic latent image on a photoconductor, applying toner to the electrostatic latent image to develop it, and transferring the toner image to recording paper. It relates to a photographic recording device.

[Prior Art] An electrophotographic recording device used in a computer, a word processor, a facsimile receiver, etc., which records information on short recording paper of a predetermined length, and which is folded and stored, or A device is known in which information is recorded on a long recording paper that is stored in a roll.

However, electrophotographic recording devices that record information on short-form recording paper are convenient for organizing and sorting the recording papers because the short-form recording paper has a predetermined size, but the short-form recording paper may jam or jam. The disadvantage is that the operator must monitor the feed because it may be sent diagonally.

In addition, electrophotographic recording devices that record information on long recording paper are
Since the long recording paper is rarely jammed, jammed, or fed diagonally, there is no need for operator supervision, but the disadvantage is that the long recording paper is inconvenient when organizing and classifying the recording paper.

Purpose An object of the present invention is to provide an electrophotographic recording device that can selectively record information on short recording paper and long recording paper depending on the purpose.

Configuration Next, the present invention will be explained in detail based on the illustrated embodiment.

In FIG. 1, reference numeral 1 indicates a photoreceptor, and this photoreceptor 1 is rotated in the direction of arrow a by a driving means (not shown). The photoreceptor 1 is surrounded by a charging device A, an exposure device B, a developing device C1, a first transfer device D, a second transfer device E, a first paper feed device F, a second paper feed device G1, a first fixing device H1. Second
Fixing device I.

A cleaning device J, a static eliminating device, etc. are arranged at predetermined positions, and the processes of charging, exposing, developing, transferring, cleaning, and static eliminating can be performed repeatedly. The photoreceptor 1 and various devices surrounding it are housed in an outer container 2. As shown in FIG.

The charging device A applies charges of a predetermined polarity to the photoreceptor 1 to bring the photoreceptor 1 to a predetermined potential.

The exposure device B includes a laser 3 that emits laser light in response to an image information signal, a reflecting mirror 4 that reflects the laser light from the laser 3, and scans the photoreceptor 1 in the width direction. This exposure device B forms an electrostatic latent image by irradiating a portion of the photoreceptor 1 charged to a predetermined potential with a laser beam corresponding to image information.

The developing device C applies toner having a charge opposite in polarity to the charge of the electrostatic latent image to a portion of the photoreceptor 1 on which the electrostatic latent image is formed, thereby forming a toner image.

The first transfer device E or the second transfer device E includes a photoreceptor 1
The toner image on the photoreceptor 1 is selectively disposed at a position facing the toner image of the photoreceptor 1, and the toner image on the photoreceptor 1 is transferred to a short recording paper or a long recording paper.

. The cleaning device J removes toner remaining on the photoreceptor IK from the photoreceptor 1 after the toner image is transferred. The charge removing device removes the charge on the photoreceptor 1 by applying a charge of opposite polarity to the electrostatic latent image on the photoreceptor 1.

The first paper feeding device F includes a cassette 5 with an open top, a rotating bottom plate 7 arranged in the cassette 5 on which a plurality of short recording papers 6 of a predetermined length are stacked, and a cassette. When the paper cassette 5 is placed in the paper feeding position, the paper feeding roller 8 located above the front part of the cassette 5 and the rotary bottom plate 7 are elastically urged upward to feed the short recording paper 6 to the paper feeding roller. 8, a filter paper suppressing means 9, a pair of double feeding prevention rollers 10 arranged on the paper feeding direction side of the paper feeding roller 8, and between these double feeding prevention rollers 10 and the photoreceptor l. It consists of a pair of resist sealers 11 and a guide plate 12 that guides the short recording paper 6.

A paper sensor 13 consisting of a light emitting element and a light receiving element is arranged between the registration roller 11 and the photoreceptor 1.

When the paper feed roller 8 starts rotating, the cassette 5
The short recording paper 6 is fed out and sent between the registration rollers 11 through a pair of double-feed prevention rollers IO.

These registration rollers 11 feed the short recording paper 6 inserted between them in the direction of the photoreceptor 1. When the leading edge of the short recording paper 6 sent by the registration sealer 11 passes the paper sensor 13, the paper sensor 13 detects this, stops the rotation of the registration roller 11, and temporarily puts the short recording paper 6 on standby. . Next, the registration roller 11 starts rotating in synchronization with the toner image on the photoreceptor 1 and sends the short recording paper 6 toward the photoreceptor 1. The short recording paper 6 is fed between the Uemachi photoreceptor 1 and the first transfer device &D at the same speed as the circumferential speed of the photoreceptor 1.

As shown in FIG. 3, a first transfer device [1iD] is integrally fixed to the lower side of the two guide plates 12 located between the resist sealer 11 and the photoreceptor 1. This first transfer device Dil is composed of a corona discharge device. The guide plate 12 to which the first transfer device is fixed is integrally fixed to the rotating plate 14. One end of this rotating plate 14 is rotatably supported by the shaft 11a of the registration roller 11. When the rotating plate 14 is rotated, the guide plate 12 and the first transfer device which are integral with the rotating plate 14 are also rotated.

A long hole 15 is formed at the other end of the rotating plate 14 . A connecting rotating member 16 is disposed near the bottom of this rotating plate 14'. A connecting pin 17 is provided protruding from the upper end of the connecting rotating member 16, and this connecting pin 17 is inserted into the elongated hole 15 of the rotating plate 14. The above connecting rotation member 1
The lower end of 6 is fixed to a rotating shaft 18. A worm wheel 19 is fixed to this rotating shaft 18. Worm gear 2 is set so as to mesh with this worm wheel 19.
0 is placed. This worm gear 20 is fixed to a drive shaft 21a of a motor 21 that can rotate in forward and reverse directions. When power is supplied to the motor 211C, the rotational force of the drive shaft 21a of the motor 21 is transmitted to the rotating shaft 18 via the worm gear 20 and the worm wheel 19, and the rotating shaft 18 is rotated. When the rotating member 16 is rotated in the direction indicated by the arrow in FIG.
The zero rotation power is transmitted to the rotating plate 14 via the connecting pin 17, and the rotating plate 14, the guide plate 12 integrated therewith, and the first transfer device are moved.

A rotating disk 22 is fixed to the rotating shaft 18, as shown in FIGS. 4 and 5. As shown in FIGS. Two holes 22a are formed in this rotating disk 22 at a predetermined interval. A sensor 23 consisting of a light emitting element and a light receiving element is arranged near the rotating disk 220 to detect the hole 22a of the rotating disk. The output of this sensor 23 is given to a control circuit 24.

This control circuit 24 controls the power supply to the motor 21,
The first transfer device 5 may be located near the photoreceptor 1 as shown in FIG. 1, or may be spaced a certain distance from the photoreceptor 1 as shown in FIG.

As shown in FIG. 1, when the first transfer device is placed near the photoreceptor L, the first sheet feeding device F feeds the short recording paper 6 between the photoreceptor 1 and the first transfer device. The first transfer device applies an electric charge having a polarity opposite to that of the toner image to the back surface of the short recording paper 6 to transfer the toner image on the photoreceptor 1 onto the short recording paper 6 by Coulomb force. .

The short recording paper 6 onto which the toner image has been transferred by the first transfer device ID is sent toward the first fixing device H.

The first fixing device H heats and melts the toner image on the short recording paper 6 using light from a xenon lamp, and fixes the toner image on the short recording paper 6. A paper conveying device is arranged below the first fixing device H. It is sent by the registration roller 11 (
The short recording paper 6 passes between the photoreceptor 1 and the first transfer device, is sent between the first fixing device H and the paper conveyance device, and is conveyed by the paper conveyance device. Two pairs of discharge rollers 25 and a guide plate 26 are arranged on the side of the paper conveyance device in the direction in which the short recording paper 6 is conveyed. The short recording paper 6 conveyed by the paper conveying device is discharged onto the upper surface of the outer container 2 from the paper discharge port 27 at the upper part of the outer container 2 by the discharge roller 25.

Another outer container 2B is arranged below the outer container 2. Inside this external container @28 is a paper storage container 2 with an opening on the top.
9 is placed. This paper storage container 29 stores a very long recording paper 30 in a folded manner. A plurality of holes are formed on both sides of the long recording paper 30 at predetermined intervals. A paper outlet 31 is formed at the upper part of the side plate of the outer container 28. A long recording paper 30 on which information is recorded is stored in the outer lower part of the side plate of the outer container 28.
A discharge paper storage container 32 is provided for storing the discharged paper.

The second paper feeding device G includes two pairs of sprockets 33 and 34 arranged at predetermined positions, and these sprockets) 33.
34, and a guide roller 36 and a guide plate 37 that guide the long recording paper 30. The second transfer device E includes a transfer roller 38 and a voltage applying means (not shown) that brings the transfer roller 38 to a potential opposite in polarity to the charge of the toner image. 2nd above
The transfer device E and the second paper feed device G are housed in a container 39, and this container 39 is arranged to be removably attached to the outer container 2. The outer plate of this container 39 has a paper size 40 for putting the long recording paper 30 on which no recording is made into the container 39.
A paper outlet 41 is formed for taking out the recorded long self-recording paper 30.

The long recording paper 30 taken out from the paper storage container 29 is
Outer container 280 paper outlet 31 and paper inlet 40 of container 39
The paper is then placed on the sprocket 33, then on the transfer roller 38, passed through the guide roller 36, placed on the sprocket 34, and then taken out from the paper outlet 41 of the container 39 to the output paper storage container 32. leading to. The long recording paper 30 is pressed against the circumferential surface of the transfer roller 38 by a guide roller 42 . The above sp4) 33
．． 34 are arranged so as to fit into holes on both sides of the long recording paper 300. The long recording paper 30 is moved in the direction of arrow C by the rotational force of the subblocks 33 and 34, and is fed and discharged along the above-mentioned path. The long recording paper 30 is fed from the second paper feeding device GK at the same speed as the circumferential speed of the photoreceptor 1.

The sprocket 34 also has the function of ejecting the long recording paper 30.

Driving means 35 for rotating the sprockets) 33 and 34
As shown in Figs. 3 and 6, sprocket 3
3, a gear 44 arranged to mesh with the gear 43, and a gear 44 fixed to the shaft 44a of the gear 44.

The timing pulley 45 and the sprocket 34
a timing pulley 46 fixed to the shaft 34a of the
A timing pulley 47 located near these timing pulleys 45 and 46, and these timing pulleys 45, 46.

It consists of a timing belt 48 attached to a timing belt 47 and a motor 49 that applies rotational force to the timing pulley 47. A timing pulley 47 is fixed to the drive shaft of this motor 49. When power is supplied to the motor 49, the drive shaft is rotated, and the timing pulley 47 integrated therewith is rotated, and the rotational force of the timing pulley 47 is transferred to the timing belt 48,
5 and gears 44 and 43, and is also transmitted to the sprocket 34 via the timing belt 48 and timing pulley 46 to rotate the sprockets 33 and 34.

As shown in FIG. 3, the guide roller 36 is rotatably supported by a rotating shaft 36a. This rotating shaft 36a
One end of the rotating plate 50 is fixed to. A long hole 50a is formed at the other end of the rotary plate 50. The shaft 38a of the transfer roller 38 of the second transfer device E is rotatably and movably fitted into the elongated hole 50a of the rotary plate 50. An intermediate portion of a pressing arm 51 is rotatably attached to the rotary plate 50. This suppression arm 5
One end of the transfer roller 38 is rotatably fitted onto the shaft 38a of the transfer roller 38. An end of a tension spring 52 is provided at the other end of the pressing arm 51 and the rotating plate 50, and this spring 52 urges the pressing arm 51 and urges the transfer roller 38 upward. are doing.

A gear 53 is fixed to the rotating shaft 36a. A worm wheel 54 is arranged to mesh with this gear 53. A worm gear 55 is arranged to mesh with the worm wheel 54. A motor 56 capable of forward and reverse rotation is arranged near the worm gear 55, and the worm gear 55 is fixed to a drive shaft 56a of the motor 56. When power is supplied to the motor 56, the drive shaft 56a is rotated and the worm gear 55 is rotated, and the rotational force of the worm gear 55 is transmitted to the rotating shaft 36a via the worm wheel 54 and the gear 53, causing the rotating shaft 36a to rotate. be done.

When the rotating shaft 36a is rotated, the rotating plate 50 integrated therewith is rotated in the direction of the arrow d in FIG. 8, and the transfer roller 38 is also rotated in the direction of the arrow d.

As shown in FIG. 8, a rotating disk 57 is fixed to the end of the rotating shaft 36a. Two holes 57a are formed in this rotating disk 57 at a predetermined interval. A sensor 58 consisting of a light-emitting element and a light-receiving element is arranged near the rotating disk 57 to detect the hole 57a thereof. The output of this sensor 58 is given to a control circuit 59. This control circuit 59 controls the power supply to the motor 56 to place the second transfer device E at a sufficient distance from the photoreceptor l as shown in FIG. It is placed at a position near the photoreceptor 10 facing the toner image on the photoreceptor 1.

As shown in FIG. 2, the second transfer device E is connected to the photoreceptor 10.
The long recording paper 30 is fed between the photoreceptor 1 and the second transfer device E by the second paper feeding device E in a state where the long recording paper 30 is placed so as to face the toner image on the nearby photoreceptor 1, and the second transfer is performed. The transfer roller 38 of the device E has a potential opposite to that of the toner image, and uses Coulomb force to transfer the toner image on the photoreceptor I to the long recording paper 30.

The long recording paper 30 onto which the toner image has been transferred by the second transfer device E is sent in the direction of the second fixing device (2). This second fixing device heats and melts the toner image on the long recording paper 3o using light from a xenon lamp, and fixes it on the long recording paper 30. The long recording paper 3 on which the toner image is fixed by the second fixing device I
o passes through the paper outlet 41 of the container 39 and is folded and stored in the discharged paper storage container 32.

The second transfer device E and the second paper feed device G include a container 39
It is arranged to be busy. A shaft 33a of a sprocket 33, 34 is attached to a side plate 39a of this container 39.

34a and a shaft 36a of the guide roller 36 are rotatably supported via bearings, and a motor 49 is held by a holding means fixed to the container 39. The bottom plate 39b of the container 39 is slidably attached to the bottom of the outer container 2, and the container 39 can be attached to and removed from the outer container 2 by hand. Therefore, the container 39 can be attached to the outer container 2, and the second transfer device E and the second paper feeding device G can be attached to predetermined positions in the outer container 2 as shown in FIGS. 1 and 2. , and, as shown in FIG. 9, the container 39 can be detached from the outer container 2 and the second transfer devices E and d and the second paper feeding device G can be detached from the outer container 2. The second transfer device RFi is the 10th
As shown in the figure, a corona discharge device 60 may be used.

This corona discharge device 60 is integrally fixed to the rotating plate 50. In this case, it is necessary to provide a guide roller 61 at the end of the rotating plate 50 to guide the long recording paper 30.

Control for selectively arranging the first transfer device E or the second transfer device E at a position facing the toner image y on the photoreceptor 1 is performed by a control circuit or a computer operated by a recording paper selection switch, or by a word processor. Alternatively, it is performed by a control circuit such as a facsimile receiver.

Effects The electrophotographic recording device of the present invention can selectively record information on short recording paper and long recording paper depending on the purpose.

[Brief explanation of the drawing]

1 and 2 are partially cutaway front views schematically showing the electrophotographic recording device of the present invention, FIG. 3 is a partially cutaway front view showing essential parts of the same electrophotographic recording device, and FIG. 4 is the same as the above. FIG. 5 is a partially cutaway plan view of the means shown in FIG. 4, and FIG. 6 is a front view showing a part of the means for moving the first transfer device of the electrophotographic recording device. Transfer device and second
FIG. 7 is a partially cutaway front view showing a means for moving the second transfer device same as above; FIG. 8 is a front view showing a part of the means shown in FIG. 7; FIG. 9 is a partially cutaway front view schematically showing the electrophotographic recording apparatus, and FIG. 10 is a partially cutaway front view showing another embodiment of the second transfer device. L... Photoreceptor, 6... Short recording paper, 30... Long recording paper, A... Charging device, B... Exposure device, C... Developing device, D... First Transfer device, E...Second transfer device, F...First sheet feeding device, G...Second sheet feeding device, H.
... 1st fixing device, ■... 2nd fixing device %] Figure % 70 Yuan 8 pieces

Claims (1)

[Claims] a first transfer device and a second transfer device that can be selectively arranged around the photoconductor at positions facing the toner image formed on the photoconductor; and a predetermined length between the photoconductor and the first transfer device. a first paper feeding device that feeds the short recording paper; a first fixing device that fixes the toner image transferred by the first transfer device to the short recording paper fed by the first paper feeding device; a second paper feeding device that feeds a long recording paper folded or wound and stored between the photoreceptor and the second transfer device; and the second paper feeding device An electrophotographic recording apparatus comprising: a second fixing device that fixes a toner image transferred by a second transfer device to a long recording paper fed by a second transfer device.