JP2549626Y2 - A device for cueing and winding a recording paper around a rotating drum of an image recording device. - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for winding a recording sheet on a rotating drum of an image recording apparatus in a state where the recording sheet has been caught.

[0002]

2. Description of the Related Art In a so-called total printing system, a color separation film is used in a so-called total printing system in which a printed material is obtained through the steps of image capturing, editing, proofreading, preparation of a printing plate, preparation of a printing plate, and printing. Proofreading, making a printing plate using a color separation film, etc., all of which were based on the existence of a color separation film. It requires a long time and a great deal of labor, and there are various problems in preserving and managing it, as well as problems such as the need for proficiency in proofreading work based on color separation films. There is a problem that it is not easy for anyone to operate, and there is a problem that a separate and expensive device is required as a proofing machine and a plate making machine. Shi As Temu, Hei 3 over 9888
According to the publication, a plurality of colors required for multi-color printing of an original in an image capturing section ｛usually three subtractive primary colors, that is,
Black (BL) in addition to yellow (Y), magenta (M), and cyan (C)
The digital image data corresponding to the image for each color obtained by color separation into} and the digital image data output corresponding to the halftone image for each color are stored in the workstation. The above-mentioned workstation uses an image processing device, while watching a color image displayed on a display, using digital image data stored in the above-mentioned storage, layout, color adjustment, editing, etc. After the image processing is performed, the image processing is applied to an output device for proof printing and lithographic printing, and digital image data corresponding to a halftone image for each color (or digital image data corresponding to a monochrome halftone image)
Discloses a method of outputting a proof print or a lithographic print.

[0003]

According to the apparatus disclosed in the above-mentioned publication, the above-mentioned problem in the conventional so-called total printing system can be solved satisfactorily. According to the device having such a configuration, the components are separated from each other, so that the entire device becomes large, and the effect of light attenuation is likely to occur due to a long electrophotographic process time. It is difficult to obtain repeatability because there are many contact points with the recording paper and it is difficult to obtain positioning accuracy. There was a problem that the deviation was likely to be large, and a solution to that problem was required.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a recording paper is wound in a generatrix direction of a rotating drum at a specific position near a top on a downstream side of the drum rotation with respect to a top of the rotating drum for winding and carrying the recording paper. A recording paper start end position regulating member for performing cueing, and fixed to a rotating shaft extending in the generatrix direction of the rotating drum at a specific position on the upstream side of the drum rotation in the vicinity of the recording paper start end position regulating member, A recording paper pressing roller provided so as to be able to move freely toward and away from the rotating drum in association with the positioning operation of the leading end of the recording paper by the recording paper starting end position regulating member, and the recording paper starting end In order to adsorb the vicinity of the leading end of the recording paper and the vicinity of the end of the recording paper with the leading position regulated by the position regulating member to the outer peripheral surface of the rotating drum, the rotating drum is provided with the above. A vacuum suction unit for the end of the recording paper, and after the recording paper start end is vacuum-sucked to the outer peripheral surface of the rotary drum, the recording paper start end position regulating member is released from the rotary drum surface, and a recording paper pressing roller is provided. Rotating the rotating drum so that the recording paper is tightly wound around the peripheral surface of the rotating drum in a state where the recording paper is pressed, and a means for vacuum-sucking the end of the paper recording paper. Provided is a device for crawling and winding a recording paper on a drum.

[0005]

A vertical movement is performed under the control of the control device at a specific position near the top of the rotary drum downstream of the rotation of the drum with respect to the top of the rotary drum, and cueing of the recording paper is performed in the generatrix direction of the rotary drum. The leading end position of the recording paper is regulated by the recording paper start end position regulating member. The recording paper pressing roller fixed to the rotating shaft extending in the generatrix direction of the rotating drum at a specific position on the upstream side of the drum rotation near the recording paper starting end position regulating member is the recording paper starting end. After the positioning operation of the leading end of the recording paper is completed by the position regulating member, the recording paper is pressed against the outer peripheral surface of the rotating drum. As described above, the vicinity of the leading end of the recording paper in the state where the leading end position is regulated by the recording paper starting end position regulating member is suction-held by the operation of the vacuum suction unit for the end of the recording paper provided on the rotating drum. The recording paper in a state where the leading end portion is suction-held at a predetermined position of the rotating drum and pressed against the outer peripheral surface of the rotating drum by the recording paper pressing roller is applied to the outer peripheral surface of the rotating drum as the rotating drum rotates. It is wound. After the vicinity of the end of the recording paper is sucked and held by the operation of the vacuum suction unit with respect to the end of the recording paper provided on the rotating drum, the recording paper pressing roller separates from the outer peripheral surface of the rotating drum, and the head of the recording paper relative to the rotating drum is moved. After the winding operation, the image recording operation by the electrophotographic process is started.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an image recording apparatus according to the present invention; FIG. 1 is a schematic structural view showing the relationship between a recording paper feeding and winding device portion and a recording paper supply portion with respect to a rotating drum of the image recording apparatus of the present invention, and FIGS.
FIGS. 4 to 6 are front views (partial cross-sections) of the vicinity of a recording paper cueing mechanism in the crawling and winding device for a recording paper with respect to the rotating drum of the image recording apparatus of the present invention. FIGS. 7 and 8 are side views of the recording paper crawling mechanism HP of the recording paper crawling and winding device when viewed from the outside of the left end of the component shown in FIG. FIG. 9 is a side view of a main part used for explaining an operation of attaching and detaching a recording paper crawling and winding mechanism unit to and from the apparatus main body with respect to a rotating drum of the image recording apparatus. FIG. FIG. 10 is a side view showing a schematic configuration of the image recording apparatus, FIG. 10 is a side view of a main part used for explaining the operation of the recording paper crawling and winding apparatus of the present invention, and FIG. FIG.

Now, an electrophotographic recording paper 3 (hereinafter sometimes simply referred to as a recording paper 3) having a photosensitive layer provided on a conductive support is a recording paper (for example, on a conductive support). A recording paper provided with a photosensitive layer formed by dispersing photoconductive titanium dioxide in an insulating resin binder)
After being wound in close contact with the outer peripheral surface of the recording paper 3, the recording paper rotating integrally with the rotating drum 13 is charged,
A recording operation of image information is performed by respective processes such as exposure, development, fixing, and the like, and a series of recording operations such as peeling a recorded recording paper from the rotating drum 13 and discharging the recording paper outside the image recording apparatus are performed. In the image recording apparatus described above, the recording paper 3 is wound around the rotating drum 13 prior to the image recording operation, and when the image recording operation is completed, the rotating drum 1 is rotated.
The recording paper 3 is peeled from the recording paper 3. Here, first, referring mainly to FIGS. 1 and 9, the overall schematic configuration and recording operation of the image recording apparatus provided with the apparatus for crawling and winding the recording paper to the rotating drum of the image recording apparatus of the present invention will be described. I will explain.

In FIG. 9, reference numerals 1 and 2 denote side plates of a body of an image recording apparatus. Above the side plate 1 of the body, one end of a rotating shaft 4 of a roll-shaped recording paper 3 for electrophotography is provided. Two bearing plates 5 for rotatably supporting are fixed (
A bearing plate for supporting the other end of the rotating shaft 4 is not shown in the drawing). An imaginary line 6 in the drawing is a covering member 6 for shielding light. When the operator inputs image recording start information to an input unit (not shown) in order to start image recording by the image recording apparatus, the recording paper 3 is guided by guide plates 7 and 8 of the supply unit.
Between the supply rollers 9 and 10, the rotation of which is controlled under the control of the control device 11.
By 10, it is sent to the rotating drum 13. Reference numeral 12 denotes a well-known cutting device (cutter) that includes, for example, a rotary blade 12a and a fixed receiving blade 12b.

When the supply of the recording paper 3 is started by the supply rollers 9 and 10 as described above, the recording paper start end position regulating member 14 in the recording paper cueing mechanism HP provided above the rotary drum 13 is moved. And a cam plate 114 operating under the control of the control device 11 (see FIGS. 4 to 6... The cam plate 114 is not shown in FIGS. 1, 9 and 10) and connected thereto. Due to the operation of the member (described later with reference to FIGS. 4 to 6), in this state, the rotating drum 13 descends until the leading end abuts on the surface of the rotating drum 13 which is stopped and shows the reference rotational phase. A signal generated by a sensor (not shown) when the leading end of the recording paper 3 advancing by the rotation of the supply rollers 9 and 10 abuts on the recording paper start end position regulating member 14 described above. Is given to the control device 11. Is the, to stop the rotation of the feed roller 9, 10 after the controller 11 in a predetermined short time. As a result, the recording paper 3 has its leading end (head)
Is supplied from the state in which it abuts on the recording paper start end position regulating member 14 in the recording paper cueing mechanism HP, so that the leading end of the recording paper 3 is moved by the recording paper start end restriction member 14. You will surely be caught.

Further, the recording paper pressing roller 15 is
(See FIGS. 4 to 6... The cam plate 115 is not shown in FIGS. 1, 9 and 10), and the vicinity of the leading end of the recording paper 3 is pressed against the rotating drum 13. . The specific configuration and operation of the recording paper cueing mechanism HP will be described later with reference to FIGS. The recording paper cueing mechanism HP shown in FIG. 2 includes only the recording paper cueing mechanism HP, as described later with reference to FIGS. 7 and 8. , Which is configured to be detachable from the apparatus main body. On the surface of the rotary drum 13 at a portion covered by the vicinity of the leading end of the recording paper 3, a shallow groove 78 is provided in the generatrix direction of the rotary drum 13, and a number of transparent grooves are provided in the groove 78. A suction port (sometimes described as a suction cup made of an elastic body) of a suction device provided with a hole 71 in the internal space of the rotating drum 13 is provided.
The suction port 16 is connected to vacuum pumps 80 and 86 (see FIG. 11).

The control device 11 starts the suction operation by the vacuum pump at a predetermined timing so that the leading portion (leading portion) of the recording paper 3 is brought into close contact with the leading end suction area Zb on the peripheral surface of the rotating drum 13. To In the state where the leading end position of the leading end of the recording paper 3 is regulated by the recording paper start position regulating member 14 as described above, the leading end of the recording paper 3 is rotated by the suction performed through the suction port 16 of the suction device. Immediately after the drum 13 is brought into close contact with the peripheral surface of the drum 13, immediately after the recording paper starting end position regulating member 14 is raised under the control of the control device 11, the rotary drum 13 is moved under the control of the control device 11. Starts rotating in the direction of arrow R, and starts the winding operation in a state where the recording paper 3 is in close contact with the outer periphery of the rotating drum 13. The recording paper 3 to be wound on the rotating drum 13 has already been described. The sheet is cut to a length necessary for image recording by the cutting operation of the cutting device 12 operated under the control of the control device 11, and the rear end of the recording paper 3 also passes through a large number of through holes from the suction port 17 of the suction device. By the intake operation performed , It is in close contact with the peripheral surface of the rotary drum 13.

When the rotating drum 13 keeps rotating in a state where the recording paper 3 of a predetermined size is in close contact with the outer peripheral surface as described above, the recording paper 3 wound around the rotating drum 13 is rotated. Is uniformly charged by the charger 18 supplied with a voltage from the power supply 19. Reference numeral 21 denotes a rotary mirror wheel. The rotary mirror wheel 21 is rotated at a predetermined rotation speed by a motor 20 to deflect the laser light emitted from the semiconductor laser 22 in a predetermined direction. Semiconductor laser 22
Emits a laser beam whose intensity is modulated by predetermined exposure data including halftone image digital data to be recorded, and outputs the laser beam to the lens 23, the reflecting mirrors 24 and 25.
The above-mentioned uniformly charged recording paper 3 is irradiated through an optical system composed of the above-described apparatus, and the recording paper 3 is exposed by predetermined exposure data including digital image data of a halftone image to be recorded. Thus, a charge image corresponding to the image information to be recorded is formed on the photoreceptor of the recording paper 3. A prebath device 26 is mounted on a support plate 27 between the portion where the recording paper 3 is exposed by the laser beam and the lowermost portion of the rotating drum 13. Pre-bath device 26
The container 3 for the pre-bath liquid fixed to the bottom plate 29 of the fuselage
The prebath liquid is supplied from 0 through a pipe 31, and the roller 28 of the prebath device 26 forms a film of the prebath liquid on the surface of the recording paper 3. The surplus pre-bath liquid falls back into the pre-bath device 26 and is collected through the pipe 32 into the pre-bath liquid container 30 fixed to the bottom plate 29 of the fuselage.

The recording paper 3 which has been subjected to the pre-bath treatment in the pre-bath device 26 is then visualized by a wet developing unit. The wet developing unit (wet developing device) includes a developing electrode 33a near a portion directly below the rotary drum 13 and closer to the upstream side of the drum rotation than the position immediately below the rotary drum 13 described above.
(The developing electrodes of the wet developing device selected and used among the developing electrodes 33a to 37a provided in the wet developing devices 33 to 37, respectively.
Are arranged so that all or most of the developing electrodes 33a are located. The developing electrode 33a of the wet developing device 33 (the same applies to 34 to 37)
(The same applies to 34a to 37a). The surface of the recording electrode 3 faces the surface of the recording paper 3 wound closely to the rotating drum 13 with a slight space therebetween.
From the surface at a, a tube 43 is passed from a container 38 (corresponding to the wet developing device used in 38 to 42) for the electrophotographic wet developer arranged on the bottom plate 29 of the fuselage. The electrophotographic wet developer supplied to the wet developing device 33 through the developing electrode 33a flows out or blows out from a discharge port formed in the developing electrode 33a. When the toner is supplied to the surface of the recording paper 3 wound in close contact with the toner, the toner corresponding to the charge amount of the charge image of the recording paper 3 adheres to the surface of the recording paper 3 to visualize the charge image. Is performed.

Since the surface of the developing electrode 33a has an inclination corresponding to the inclination of the surface of the recording paper 3 wound closely on the rotary drum 13, the developing electrode 33a has The wet developer for electrophotography flows out or is ejected from the formed discharge port, and the wet developer for electrophotography fills the gap between the surface of the developing electrode 33a and the surface of the recording paper 3 in a state where the rotating drum 13 is filled. Satisfactorily flows down in the direction of rotation of the developer and is collected in the wet developing device 33. The electrophotographic wet developer collected in the wet developing device 33 is collected by a tube 44 into a container 38 for the electrophotographic wet developer.
In FIG. 9, containers 38 to 42 of the electrophotographic wet developer, which are arranged on the bottom plate 29 of the fuselage, respectively contain different types of electrophotographic wet developers (colorant, binder, etc. in an electrically insulating liquid). (A wet-type developer for electrophotography) in which fine particles for development composed of the above are dispersed.

As described above, one of the wet developing devices 33 to 37 is selected from the position immediately below the rotary drum 13 in the vicinity of the portion immediately below the rotary drum 13 as described above. Also, the developing electrodes are arranged so that all or most of the developing electrodes are located near the upstream side of the rotation of the drum, and the bottoms of the plurality of wet developing devices 33 to 37 are stretched in parallel at predetermined intervals. On the two transfer belts 45 (eg, chains, belts, etc.) provided, the above-mentioned transfer belt 45 is moved in the direction of arrow E in FIG. One wet developing device 33 on the transfer zone 45 is provided by the lifting device 49 provided.
(34-37) is raised to the above-mentioned predetermined position to be used for the developing processing operation, or the excess developing solution is removed at a position slightly lowered from the raised position, or Of the plurality of developing units 33 to 37 by returning the developing unit
Individuals are selected and used. The arrow F in the figure indicates the moving direction of the above-described lifting device. Each of the developing units 33 to 37 is a two-strand unit extending in parallel at a predetermined interval.
It is placed on the transport belt of the book in a state where the position is regulated by the provided spacing pieces S, S.

The transfer belt 45 (chain) is stretched over sprockets 46 and 47, and a driving force is transmitted to a driving sprocket under the control of the control device 11, or
The supply of driving force is interrupted. Reference numeral 48 denotes a rail for eliminating the slack of the chain or preventing the chain from meandering (in the drawing, two of the two chains stretched in parallel at a predetermined interval). The chained sprocket on the front side is not shown in the drawing, and the chain 45 shown in the figure and the sprockets 46 and 47 on which the chain 45 is stretched are shown in FIG.
Which is located on the far side of the fuselage). The control device 11 controls the supply state of the driving force to the driving sprocket, and transfers a selected one of the developing units 33 to 37 to the position of the lifting device 49. The elevating device 49 is controlled by the control device 11 to transmit a rotational force to the cam shaft 51 to which the cam plate 50 is fixed.
The roller 52 that is in sliding contact with the cam surface of the cam plate 50
The substrate 54 of the elevating member to which the rotating shaft 53 is fixed is raised or lowered. 55 is a support. Below the board 54 of the elevating member, guide portions 61 and 62 having holes for fitting two guide rods 58 and 59 fixed to the mounting plate 56 are fixed. Above the substrate 54 of the member, a support base 64 is provided via connecting bodies 62 and 63.
Is provided.

The support table 64 of the elevating device is moved down from the height position of the chain 45 where the developing units 33 to 37 are mounted, and is raised by the rotation of the cam plate 50. Then, the developing device 33 located above the support base 64 at that time is raised to the position of the developing device 33 illustrated in FIG. Can be performed. When the developing device 33, which has completed the developing operation, descends along with the lowering of the support base 64 of the elevating device 49 due to the rotation of the cam plate 50 performed under the control of the control device 11, the excess developer is satisfactorily removed. The developing device 33 is placed on the chain 50 by the lowering of the support 64 of the elevating device 49 by the rotation of the cam plate 50. In this manner, the plurality of developing devices 33 to 3
7 can be selected one by one and used sequentially for the developing operation.

During the developing operation, there is excess developer which adheres to the surface of the recording paper 3 and passes through the vicinity of the lowermost portion of the rotating drum 13 and moves toward the fixing section as the rotating drum 13 rotates. However, since such excess developer is blown from the tip 65a of the air guide tube 65 to the vicinity of the lowermost portion of the rotating drum 13 due to the wind blown in the blowing chamber 67, The excess developer that has been blown to the position near the bottom of the rotating drum 13 and collected near the bottom of the rotating drum 13 is returned into the developing device near the bottom of the rotating drum 13. Then, the recording paper 3 from which the excess developer on the surface has been removed is subjected to a fixing operation in a fixing unit 66 and then neutralized by a static eliminator 68 and then transferred on a guide plate 69 of a paper discharging unit to be out of the machine. The paper is ejected. Prior to the discharge, the air inlet provided in the internal space IS of the rotating drum 13 corresponding to the start end region and the end region of the recording paper 3 wound around the rotating drum 13. From
The recording paper 3 is peeled off from the outer periphery of the rotating drum 13 by blowing air at a predetermined timing. Reference numerals 70, 70 in FIG. 9 indicate a heat fixing section for a planographic plate (printing plate).

Next, with reference to FIGS. 1 to 8 and the like, a specific configuration example and an operation mode of the apparatus for feeding and winding a recording paper to the rotating drum of the image recording apparatus of the present invention will be described. FIGS. 2, 3 and 7 show front views (partial cross-sections) of the vicinity of a recording paper cueing mechanism HP in the crawling and crawling apparatus for recording paper with respect to the rotating drum of the image recording apparatus of the present invention.
8, 101 and 102 are machine boards of the image recording apparatus. The recording paper cueing mechanism HP is configured as a structure that is detachable from the body of the image recording apparatus, and two connecting parts that connect the left and right components of the recording paper cueing mechanism HP. The rods 130 and 131 are provided on the machine plates 101 and 102 of the image recording apparatus so as to be guided by rail members 128 and 129 fixed to the machine plates 101 and 102 of the image recording apparatus. Through the holes 121 and 122, so that it can be easily attached and detached from the side of the image recording apparatus. The cueing mechanism HP of the recording paper is inserted from the side of the body of the image recording apparatus. When mounted, the positioning pin 127 (FIG. 2) attached to the tip of the connecting rod 130 is attached to the positioning block 126 fixed to the machine plate 102 of the image recording apparatus.
The positioning mechanism HP of the recording paper is restricted to a predetermined mounting position with respect to the body of the image recording apparatus by fitting into the positioning holes provided in the recording paper. And screw 133-1
35 (see FIG. 7), the recording paper cueing mechanism HP
Is fixed to the machine plate 101 of the image recording apparatus, the recording paper cueing mechanism HP is mounted on the image recording apparatus.

In FIG. 2, reference numeral 92 denotes a motor, 93 denotes a reduction gear housing, and 98 denotes a coupling unit.
3 is fixed to the power source mounting plate 94 by screws 95 and 96. Reference numeral 97 denotes an output shaft of the speed reducer. The output shaft 97 of the speed reducer is connected to the camshaft 1 via a coupling portion 98.
13. 8 is a view of the right side from the line AA in FIG. 2, and FIG. 7 is a view of the right side from the left side of the machine plate 101 of the image recording apparatus in FIG. FIG.
Are the motor 92, speed reducer housing 93, coupling part 98, positioning block 126,
Sensor 124, dog (member provided with pattern detected by sensor 124) 125, rails 128, 12
FIG. 9 is a simplified view showing a configuration of a main part, except for a configuration part such as 9.

FIGS. 4 to 6 show the recording paper crawling and winding apparatus shown in FIG. 3 for explaining the operation of the recording paper crawling mechanism HP in the recording paper crawling and winding apparatus. FIG. 4 is a side view of the recording paper cueing mechanism HP when the right side is viewed from the left end outside of the constituent part of FIG. 4. FIG. 4 shows the supply roller 9 by the control operation of the control device 11 as described above. , 10
As a result, the supply of the recording paper 3 is started, and the recording paper start end position regulating member 14 in the recording paper cueing mechanism HP provided above the rotary drum 13 is stopped with the reference rotation phase. The fixed receiving blade 12b of the cutting device 12 is moved down by the driving rotation operation of the supply rollers 9 and 10 which are lowered until the leading end thereof comes into contact with the surface of the rotating drum 13 and are rotated by a motor (not shown). The leading end of the recording paper 3 which has been stopped in a state where the leading end is located at the position of the recording paper leading end in the recording paper cueing mechanism HP from the position of the fixed receiving blade 12b of the cutting device 12 described above. A predetermined number of pulses are supplied from the control device 11 to the motor (not shown) so that the motor can be moved by a slightly longer distance than the distance to the position regulating member 14, and recording is performed. 3 is a diagram illustrating that the cueing is performed in a state where the leading end of the recording paper cueing mechanism portion HP is securely pressed against the recording paper start end position regulating member 14 in the cueing mechanism portion HP of the recording paper. 5 illustrates a state in which the recording paper pressing roller 15 descends and the recording paper 3 is pressed against the outer peripheral surface of the rotary drum after the leading end of the recording paper 3 is securely pressed against the recording paper start end position regulating member 14. FIG. 6 shows a state in which the leading end of the recording paper 3 is reliably pressed against the recording paper starting end position regulating member 14 and the cue is reliably performed as in the state shown in FIG. After that, in a state where the recording paper 3 is pressed against the outer peripheral surface of the rotary drum by the lowering of the recording paper pressing roller 15, the vicinity of the leading end of the recording paper 3 is close to the suction device provided in the internal space of the rotary drum 13. By the suction operation from the suction port 16, Immediately after the leading end (leading end) of the recording paper 3 is brought into close contact with the leading end suction area Zb on the peripheral surface of the rotary drum 13, the recording paper starting end position regulating member 14 moves up under the control of the control device 11. 4 is a diagram showing a state in which the rotating drum 13 starts rotating under the control of the control device 11. FIG.

The recording paper cueing mechanism HP shown in FIGS. 4 to 6 is shown in FIGS. 2 and 3 when it is mounted on the body of the image recording apparatus. Components that are positioned near the machine plates 101 and 102 of the image recording apparatus and are assembled to the U-shaped frames 99 and 100, and the frames 99 and 100 that have the U-shaped cross-section described above. A connecting plate 108 for connecting some members of the components attached to the connecting plate 108, and a recording paper starting end position regulating member 14 fixed to the connecting plate 108.
It is comprised including. In FIGS. 2 and 3, the same components are attached to frames 99 and 100 having a U-shaped cross-section near the left and right ends in the respective drawings. In the following description, the components that are assembled using a frame 99 having a U-shaped cross section will be mainly described, and the cross-sectional shape will be U-shaped. The description of the components assembled by using the frame 100 having a U-shape is made up of a frame 99 having a U-shaped cross section.
Only a description like (100) is given, and detailed description is omitted.

In FIG. 2 to FIG. 6, a sliding member 10 having a ball bush 104 mounted on a shaft 103 fixed to a frame 99 (100) having a U-shaped cross section.
5 is slidably fitted. Reference numeral 106 denotes a pin implanted on one side wall of the sliding member 105. The pin 106 and the frame 99 (10
A spring 107 is stretched between the bottom plate 99a and the bottom plate 99a, and the sliding member 105 is constantly urged toward the bottom plate of the frame 99 (100) having a U-shaped cross section. It has been made like that. A locking member 109 is fixed to the upper end of the sliding member 105, and an end of a connecting plate 108 is fixed to the other side wall of the sliding member 105. The recording sheet start end position regulating member 14 is fixed to the connecting plate 108 as described above. Then, when the sliding member 105 slides along the shaft 103, the recording paper starting end position regulating member 14 attached to the connecting plate 108 fixed to the sliding member 105.
The tip is brought into contact with the outer peripheral surface of the rotary drum 13 or away from the outer peripheral surface of the rotary drum 13. The sliding operation of the sliding member 105 along the axis 103 is performed by the sliding member 105.
The locking member 109 fixed to the upper end of the camshaft 1
13 by being displaced by a cam plate 114 formed of a disk fixed to a cam shaft while being eccentric with respect to the cam shaft 13.

The camshaft 113 has an eccentricity different from that of the cam plate 114 described above.
Cam plate 1 constituted by a disc fixed to 13
15 is also provided. The cam plate 115 has a long hole 110 c formed in the pressing roller position control plate 110.
Is fitted. The above-described pressing roller position control plate 110
A guide groove 110a engaged with a pin 111 implanted in the machine plate 101 of the image recording apparatus;
01 is provided with a guide groove 110b engaged with a pin 112 implanted in the cam shaft 113, so that the cam plate 115 fixed to the cam shaft 113 When rotating in the elongated hole 110 c formed in the position control plate 110, the pins 111 and 112 are engaged with the guide grooves 110 a and 110 b of the pressure roller position control plate 110, so that the pressing roller The position control plate 110 is provided with the guide grooves 110a and 110 described above.
b is displaced in the longitudinal direction.

The pressing roller position control plate 110 has a hole 120 through which a roller shaft support 117 for supporting the end of the rotating shaft 118 of the pressing roller 15 is provided. The parallel linear portion 117a formed on the shaft support 117 is fitted into the through-hole linear portion 116 provided on the side plate 99b of the frame 99 (100) having a U-shaped cross section. Further, the roller shaft support 117 has a U-shaped frame 99 (100) formed by springs 119 whose both ends are fixed to a bottom plate 99a of a frame 99 (100) having a U-shaped cross section. ) Is always urged toward the bottom plate 99a. The two cam plates 114 and 115 are
In the illustrated example, it is assumed that the eccentric direction is fixed to the camshaft 113 in a state shifted by 90 degrees, and when the rotation angle of the camshaft 113 is shown in FIG. The cam plate 114 is separated from the locking member 109 fixed to the upper end of the sliding member 105, and the other cam plate 115 in this case.
And the long hole 1 formed in the pressing roller position control plate 110
In the engagement relationship with 10c, the pressure roller position control plate 110 is displaced upward.

In the state where the rotation angle of the cam shaft 113 is shown in FIG. 4, the sliding member 105 is lowered by the spring 107, thereby being fixed to the sliding member 105. Connecting plate 1
08 the recording paper start end position regulating member 14
Is in a state in which the tip of the cam shaft 113 is lowered until the tip of the drum 13 comes into contact with the surface of the rotating drum 13 which is stopped and shows the reference rotation phase, and the rotation angle of the cam shaft 113 is shown in FIG. , The pressing roller position control plate 110 displaced upward by the cam plate 115 engaged with the long hole 110 c formed in the pressing roller position control plate 110.
Since the lower end of the roller shaft support 117 is lifted by the lower end of the hole 120 of the roller shaft support 117, the recording paper pressing roller 15 and the outer peripheral surface of the rotary drum 13 are separated from each other. . Therefore, in the state shown in FIG. 4, the cueing operation for the recording paper 3 is performed.

Next, FIG. 5 shows a state in which the cam shaft 113 is rotated clockwise by 45 degrees from the state of the cam shaft 113 shown in FIG.
13 is fixed to the sliding member 1.
In this state, the recording paper start end position regulating member 14 shows the reference rotation phase and is stopped. The state where the tip is still in contact with the surface of the rotating drum 13 is maintained. Further, in this case, due to the engagement relationship between the other cam plate 115 and the elongated hole 110c formed in the pressing roller position control plate 110, the pressing roller position control plate 110 is displaced downward, Thereby, the roller shaft support 117 becomes
The recording paper pressing roller 15 is brought into contact with the outer peripheral surface of the rotating drum 13 by being lowered in the hole 120 by the bias of the spring 119. Accordingly, the recording paper 3 is pressed against the outer peripheral surface of the rotary drum 13 by the recording paper pressing roller 15 in a state where the position of the leading end is regulated. The start end of the recording paper is brought into close contact with the peripheral surface of the rotating drum 13 by the suction operation performed through the large number of through holes.

When the state where the start end of the recording paper 3 is brought into close contact with the peripheral surface of the rotary drum 13 is detected by the vacuum switch 83 as described later with reference to FIG.
Under the control of the control device 11, the cam shaft 113 is rotated to the state shown in FIG.
As a result, the locking member 109 is pushed up. Thereby, the sliding member 105 to which the locking member 109 is fixed slides on the shaft 103 to be displaced upward, and the sliding member 10
5 also moves upward through the connecting plate 108 fixed to the other side wall of the recording paper 5 so that the leading end of the recording paper start position regulating member 14 is separated from the outer peripheral surface of the rotary drum 13. Become. Further, in response to the rotation of the cam shaft 113, the cam 115 also moves the pressing roller position control plate 11.
0 in a state of being engaged with a long hole 110c formed in the pressing roller position control plate 110.
Displaced below the position shown in FIG. 5 described above, the top of the roller shaft support 117 and the pressing roller position control plate 11
The distance L2 'between the top of the hole 120 and the top of the hole 120 of the pressure roller position control plate 110 in the case of FIG. In the above state, the recording paper pressing roller 15
It is kept in contact with the outer peripheral surface of the rotating drum 13. The recording paper pressing roller 15 is rotated by the rotation of the rotary drum 13 from the above-described state, and the recording paper pressing roller 15 has a predetermined length.
Is wound around the outer peripheral surface of the rotary drum 13, and the end of the recording paper 3 is brought into close contact with the peripheral surface of the rotary drum 13 by the suction operation performed from the suction port 17 through a number of through holes as described later. Until the recording paper 3 is pressed against the outer peripheral surface of the rotary drum 13.

When the state where the end portion of the recording paper 3 is brought into close contact with the peripheral surface of the rotary drum 13 is detected by the vacuum switch 86 as described later with reference to FIG.
The camshaft 113 is further rotated clockwise from the state shown in FIG. 6 by the control of the control device 11, and the locking member 109 is shown in FIG. Further, the pressing roller position control plate 110 is displaced upward by the rotation of the cam plate 115. The sliding member 1 that moves integrally with the locking member 109 due to the upward displacement of the locking member 109 described above.
The recording paper start position regulating member 14 also moves upward via the connecting plate 108 fixed to the other side wall of the recording paper 05, and the leading end of the recording paper start position regulating member 14 is largely separated from the outer peripheral surface of the rotary drum 13. Further, the upward displacement of the pressing roller position control plate 110 causes the roller shaft support 11
7 is pushed upward against the spring 119 while the lowermost portion 7 is engaged with the bottom of the hole 120 of the pressing roller position control plate 110 and moves upward. The recording paper pressing roller 15 also moves upward to be separated from the outer peripheral surface of the rotating drum 13, and the recording paper starting end position regulating member 14 and the recording paper pressing roller 15 are moved for the subsequent electrophotographic process. Do not interfere.

Next, the start and end portions of the recording paper 3 are moved from the outer peripheral surface of the rotating drum 13 to the start and end portions of the recording paper 3 through the suction ports 16 and 17 through a number of through-holes. The configuration and operation for bringing the peripheral surface into close contact will be described. A rotating shaft 74 (FIG. 9) of the rotating drum 13 is rotatably supported by a bearing portion fixed to the body of the image recording apparatus, and is held so as to maintain an airtight state by, for example, rubber packing. When the rotation shaft 74 is driven and rotated, the bearing portion fixed to the body and the individual air passage formed in one side end of the rotating drum 13 are in communication with each other. To rotate the rotating drum 13 at a predetermined rotation speed.

One of the above-mentioned ventilation paths is communicated with a ventilation pipe 75 provided in the internal space IS of the rotary drum 13 (see FIGS. 1 and 10), and the other of the above-mentioned ventilation paths. Are passed through a movable air passage member 77 provided in the internal space of the rotary drum 13 and passed through a ventilation pipe 76 provided in the internal space IS of the rotary drum 13.
Is in communication with The ventilation pipe 75 is provided on the rotating drum 13.
The inner space IS of the rotary drum 13 corresponding to the start end suction area Zb commonly set on the rotary drum for the heads (start ends) of all the various types of recording paper having different sizes to be held on the outer circumference of the rotary drum 13 It is in a state of being fixedly located inside. The interior of the ventilation pipe 75 is set in the rotary drum 13 through the internal space of the suction cups 16 made of an elastic body and through holes 71 formed in the rotary drum 13. Starting end suction area Z
In the direction of the generatrix on the surface of the rotating drum at b, the groove communicates with a shallow groove 78 provided in a state shorter than the width of the recording paper.

The ventilation pipe 76 is provided on the rotating drum 13.
The rotary drum 13 corresponding to the end suction area Ze set on the rotary drum 13 for each end of various types of recording paper having different sizes to be held on the outer circumference of the rotary drum 13
In the internal space IS, one end of the ventilation pipe 76 is connected and fixed to the movable ventilation path member 77 as described above so as to be movable as described later. The other end of the trachea 76 is fixed to the movable member 73. The interior of the ventilation pipe 76 is set on the rotary drum 13 through the internal space of the suction cups 17, 17,... Made of an elastic body and through holes 72, 72,. One of the plurality of shallow grooves 79, 79,... Provided in a state of being shorter than the width of the recording paper in the generatrix direction of the surface of the rotating drum in the starting end suction area Ze. It can communicate with the groove 79. The suction cups 17, 17 made of an elastic material are moved to a selected position in the end suction area Ze of the recording paper to be held on the outer periphery of the rotating drum 13, and the through holes 72, 72,. When the air pipe and the ventilation pipe 76 are air-tightly communicated with each other, the component including the ventilation pipe 76 and the suction cup 17 is separated from the inner peripheral surface of the rotary drum 13 by the displacement of the movable member 73. The rotating drum 13 is rotated while being held at the position, and when the sucker 17 is brought into a state corresponding to a predetermined position in the end suction area Ze of the recording paper on the rotating drum 13, The movable member 73 is displaced, and the suction cup 17 is attracted to the inner peripheral surface of the rotary drum 13 at that position.

That is, the start end portions of various types of recording paper having different sizes to be held on the outer periphery of the rotary drum 13 correspond to the start end suction area Zb which is commonly set on the rotary drum. , The ventilation pipe 75 fixedly located in the internal space IS of the rotary drum 13 has the internal space of the suction pipes 16, 16.
Are smaller than the width of the recording paper in the direction of the generatrix of the surface of the rotating drum in the starting end suction area Zb set in the rotating drum 13 through the through holes 71 formed in the rotating drum 13. The end portions of various types of recording paper having different sizes to be held on the outer periphery of the rotating drum 13 are communicated with the shallow groove 78 at a specific position provided as a state. 1
In the end suction area Ze set to 3, the end suction area Ze is provided separately in the end suction area Ze in correspondence with the end of each of various types of recording paper having different sizes to be held on the outer periphery of the rotary drum 13. Are moved to the position of the selected shallow groove 79 among the shallow grooves 79, 79. The internal space in 76 is a suction cup 17, 1 made of an elastic material.
7 and through-holes 72, 72... Formed in the rotating drum 13, in the generatrix direction of the surface of the rotating drum in the end suction area Ze set in the rotating drum 13. That is, it is made to be in communication with the shallow groove 79 at a specific position provided as being shorter than the width of the recording paper.

The starting end and the end of the recording paper 3 with respect to the rotating drum 13 are connected to the starting end suction area Zb and the end suction area Ze of the rotating drum 13 through suction holes. After being wound and held on the outer peripheral surface of the rotating drum 13 in close contact with the rotating drum 13, the recording paper rotating integrally with the rotating drum 13 is charged, exposed, developed, not shown. A recording operation of image information is performed by each component that performs each process such as fixing, and then, the starting end suction area Z in the rotating drum 13
The exhaust operation is sequentially performed on the start and end portions of the recording paper 3 through the through holes 71 and 72 provided in the b and the end suction region Ze, respectively. The completed recording paper is separated from the rotating drum 13 as shown in FIG. 10, advances on the bottom plate 51 in the paper discharge section, and is pinched by the rotating paper discharge rollers 52 and 53 to form an image. The paper is discharged out of the recording device. Now, when the operator inputs the information on the size of the recording paper to be used for image recording to the input unit, the image recording in the end suction area Ze of the rotary drum 13 is performed as described above. After the suction cups 17, 17,... Made of an elastic body are set at a position corresponding to the end of the recording paper to be used at the position of the inner wall surface of the rotation drum 13 and brought into a pressed state, the rotation drum Reference numeral 13 rotates and stops until a state showing a reference rotational phase is reached.

When the image recording operation in the image device is started, a motor (stepping motor) (not shown) for rotating the supply rollers 9 and 10 is driven by the control device 11.
Supply rollers 9, 10
When the leading end of the recording paper 3 reaches the starting end suction area Zb of the rotating drum 13 that is stopped with the reference rotation phase, the recording paper 3 is supplied.
In the control device 11, the switches SW1 and SW5 shown in FIG.
0, a pipe 81, a direct acting solenoid valve 84, and a pipe 8
5 through the suction drum (not shown) provided on the rotating drum 13 shown in FIG. Thus, by the suction from the suction (discharge) air port, the air passage formed at one side end of the rotary drum 13 and the internal space I of the rotary drum 13 are formed.
S, and a suction pipe 1 made of an elastic material.
, And through the through-holes 71, 71... Formed in the rotary drum 13, the starting end suction area Zb.
Through holes 71 provided in the shallow groove 78 of
Then, the leading end of the recording paper 3 is sucked into the start end suction area Zb of the rotary drum 13.

As described above, the leading end of the recording paper 3 is sucked from the through-holes 71, 71...
Immediately after being brought into close contact with the peripheral surface of the
The rotation of the rotary drum 13 starts in the direction of the arrow R in FIG. 10 under the control described above, and the winding operation with the recording paper 3 in close contact with the outer periphery of the rotary drum 13 is started. That is, the leading end of the recording paper 3 is brought into close contact with the surface of the rotating drum 13 by the suction operation as described above, and is pressed against the surface of the rotating drum 13 by the recording paper pressing roller 15. Therefore, the recording paper 3 wound around the surface of the rotating drum 13 as the rotating drum 13 rotates, whereby the recording paper 3 wound around the surface of the rotating drum 13 is in close contact with the surface of the rotating drum 13. To be. Since the rotating drum 13 is driven to rotate at a predetermined constant rotation speed, the control device 11 controls the time value (the time value is the clock signal) from the time when the rotating drum 13 starts rotating as described above. When the time reaches a time value determined by the information on the size of the recording paper to be wound on the outer periphery of the rotating drum 13, the rotation of the cutting device is generally performed. Blade 12
a is rotated to cut the recording paper 3 into a predetermined length.

As described above, the leading end of the recording paper 3 is brought into close contact with the peripheral surface of the rotary drum 13 by suction from the through holes 71 provided in the shallow groove 78 in the starting end suction area Zb. In a state where the recording paper 3 is pressed against the surface of the rotary drum 13 by the recording paper pressing roller 15, the rotary drum 13 in the direction of arrow R in FIG.
Is wound in a state in which it is in close contact with the surface of the rotating drum 13 as it rotates.
The end of the recording paper 3 to be wound around the outer periphery of
After the point immediately before being pressed against the surface of the rotary drum 13 by the recording paper pressing roller 15, the suction cups 17, 17,... Made of elastic material abutting on the inner wall surface of the rotary drum 13 in the end suction area Ze. The suction operation is performed through the through holes 72, 72 to bring the end portion of the recording paper 3 into close contact with the peripheral surface of the rotary drum 13.

At the time immediately before the end of the recording paper 3 is pressed against the surface of the rotary drum 13 by the recording paper pressing roller 15 as described above, the switch SW3 shown in FIG. , SW6 are turned on, and the pipe 87 and the direct acting solenoid valve 9 are connected to the vacuum pump 86.
Via the tube 1 and the pipe 90, air is taken in from a suction port (not shown) provided on the rotating drum 13 shown in FIG. Thus, by the suction from the suction (discharge) air port, the air passage formed in one side end of the rotary drum 13 and the rotary drum 13
Through the ventilation pipe 76 provided in the internal space IS, the internal space of the suction cups 17, 17,... Made of elastic material, and the through holes 72, 72,. Through hole 7 provided in shallow groove 79 in suction area Ze
Are sucked from 2, 72..., And the end of the recording paper 3 is sucked to the end suction area Ze of the rotary drum 13. The component indicated by 83 in FIG. 11A and the component indicated by 89 in FIG. 11B operate on / off in accordance with the degree of vacuum in the tubes 81 and 87. A vacuum switch for performing

During the next one rotation of the rotating drum 13 in which the recording paper 3 of a predetermined size is wound in close contact with the outer peripheral surface, the recording paper 3 that rotates integrally with the rotating drum 13 is The recording operation of the image information is sequentially performed by respective steps such as charging, exposure, development, fixing and the like. When the leading end of the recorded recording paper 3 on which the image recording has been performed as described above has passed the position of the recording paper pressing roller 15, the controller 11 switches the switch SW1 shown in FIG. Is turned off, SW2 and SW5 are turned on, and the vacuum pump 8 is turned on.
0, the pipe 82, the direct-acting solenoid valve 84, and the pipe 8
5, exhaust is performed from a suction (discharge) air port (not shown) provided on the rotating drum 13 shown in FIG. 9. Thus, by the exhaust air from the suction (discharge) air port, the air passage formed in one side end of the rotating drum 13 and the ventilation pipe 75 provided in the internal space IS of the rotating drum 13 are formed. , Elastic suction cup 1
, And through the through-holes 71, 71... Formed in the rotary drum 13, the starting end suction area Zb.
Through holes 71 provided in the shallow groove 78 of
Then, the start end of the recording paper 3 is separated from the start end suction area Zb of the rotary drum 13.

When the starting end of the recording paper 3 is separated from the starting end suction area Zb of the rotary drum 13, the recording paper 3 held between the recording paper pressing roller 15 and the rotating drum 13 is removed.
Moves forward in accordance with the rotation of the rotary drum 13, and as shown in FIG.
After the recording paper 3 is pinched between the paper discharge rollers 92 and 93, the paper discharge operation of the recording paper 3 is performed by the paper discharge roller 9 described above.
2 and 93, the recording paper 3 is discharged out of the image recording apparatus. The rotating drum 13 is stopped at the time when the rotating drum 13 is brought into the state of the reference rotating phase of the rotating drum by the rotating operation during the sheet discharging operation, and prepares for the start of the next process.

When the discharge rollers 92 and 93 continue to rotate and the end of the recorded recording paper 3 passes the position of the recording paper pressing roller 15, the control device 11 shows the state shown in FIG. The switch SW3 is turned off and the switches SW4 and SW6 are turned on, and the rotary pump 13 shown in FIG. 9 is connected to the vacuum pump 86 via the pipe 88, the direct acting solenoid valve 91 and the pipe 90. The air is exhausted from a suction (discharge) air port (not shown) provided in the apparatus.
Thus, by the exhaust from the suction (discharge) air port 16, a ventilation path formed in one side end of the rotating drum 13 and a ventilation pipe 76 provided in the internal space IS of the rotating drum 13 are formed. , The internal space of the suction cups 17, 17,... Made of elastic material, and the through holes 72, 7 formed in the rotary drum 13.
2 and the shallow groove 79 in the end suction area Ze
Are exhausted from the through holes 72 provided therein, and the end of the recording paper 3 is separated from the end suction area Ze of the rotary drum 13.

[0042]

As is apparent from the above description, the cueing and winding apparatus for the recording paper with respect to the rotating drum of the image recording apparatus according to the present invention is arranged downstream of the rotation of the drum with respect to the top of the rotating drum. At a specific position near the top of the side, the recording paper moves up and down under the control of the control device, and the leading edge of the recording paper is regulated by the recording paper start end position regulating member that locates the recording paper in the generatrix direction of the rotating drum. The outer peripheral surface of the recording paper pressing roller fixed to a rotating shaft extending in the generatrix direction of the rotating drum at a specific position on the upstream side of the drum rotation near the recording paper start end position regulating member. Then, the vicinity of the leading end of the recording paper in the state where the leading end position is regulated by the recording paper start end position regulating member is suction-held by the operation of the vacuum suction unit with respect to the end of the recording paper provided on the rotating drum, and then recording is performed. Paper start position The recording paper in a state where the outer peripheral surface of the rotating drum is pressed by the recording paper pressing roller is wound around the outer peripheral surface of the rotating drum as the rotating drum rotates, and the vicinity of the end of the recording paper is rotated near the end of the recording paper. After the recording paper is pressed and held by the operation of the vacuum suction unit with respect to the end of the recording paper provided in the above, the recording paper pressing roller is separated from the outer peripheral surface of the rotating drum, and the cueing and winding operation of the recording paper on the rotating drum is completed Since the image recording operation by the electrophotographic process is started, in the apparatus for crawling the recording paper on the rotating drum of the image recording apparatus of the present invention, the recording wound on the rotating drum is performed. Since the leading end position of the paper is regulated by the recording paper starting end position regulating member that performs cueing of the recording paper in the generatrix direction of the rotating drum,
The position can be determined with extremely high precision. Therefore, in addition to fine adjustment of the register adjustment when a four-color separation plate is output and mounted on a plate cylinder of a printing press, the precision as a printing plate becomes extremely high. Further, the leading end position of the recording paper is regulated by a recording paper start position regulating member for cueing the recording paper in the generatrix direction of the rotating drum, and the upstream side of the drum rotation near the recording paper start position regulating member is specified. In a state where the start position of the recording paper is regulated by pressing the recording paper pressing roller fixed to the rotating shaft extending in the generatrix direction of the rotating drum at an appropriate position, the starting position of the recording paper is controlled. By adsorbing and holding the vicinity of the leading end by the operation of the vacuum adsorbing unit with respect to the end of the recording paper provided on the rotating drum,
No suction displacement occurs during the vacuum suction operation of the recording paper, and the suction operation on the recording paper is reliably performed.
Furthermore, since the subsequent operation is performed after it is confirmed that the recording paper is completely absorbed by the rotating drum, the recording paper does not float from the rotating drum,
Therefore, at the time of the electrophotographic process, it is possible to eliminate the problems such as the focus shift of the recording beam, the sticking of the liquid developer to the back side of the recording paper, the color mixture, the dirt, the jam of the recording paper, and the like. During the electrophotographic process, the recording paper pressing roller rises and retracts from the rotating drum surface, so that various advantages such as not contaminating the image forming surface can be obtained, and the present invention can satisfactorily solve the conventional problems.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a relationship between a recording paper crawling and winding device portion and a recording paper supply portion with respect to a rotating drum of the image recording device of the present invention.

FIG. 2 is a front view (partial cross-section) of a vicinity of a recording paper cueing mechanism in a crawling and crawling device for a recording paper with respect to a rotating drum of the image recording apparatus of the present invention.

FIG. 3 is a front view (partial cross-section) of a vicinity of a recording paper cueing mechanism in a crawling and crawling device for a recording paper with respect to a rotating drum of the image recording apparatus of the present invention.

4 is a side view of a recording paper cueing mechanism of the recording paper cueing and winding device when viewed from the right outside from the left end of the component shown in FIG. 3;

FIG. 5 is a side view of a recording paper cueing mechanism of the recording paper cueing and winding apparatus when viewed from the right outside from the left end of the component shown in FIG. 3;

FIG. 6 is a side view of a recording paper cueing mechanism of the recording paper cueing and winding device when viewed from the right outside from the left end of the component shown in FIG. 3;

FIG. 7 is a side view of a main part used for describing an operation of attaching and detaching a mechanism for crawling and winding a recording paper to and from a rotating drum of the image recording apparatus of the present invention;

FIG. 8 is a side view of a main part used for explaining an operation of attaching and detaching a mechanism for feeding and winding a recording paper to a rotating drum of the image recording apparatus of the present invention to and from the apparatus main body.

FIG. 9 is a side view showing a schematic configuration of an image recording apparatus provided with the recording paper cueing and winding apparatus of the present invention.

FIG. 10 is a side view of a main portion used for explaining the operation of the recording paper crawling and winding apparatus of the present invention.

FIG. 11 is a diagram for explaining the operation of the vacuum suction device.

[Explanation of symbols]

1, 2 ... side plate of the body of the image recording apparatus, 3 ... recording paper for electrophotography (recording paper), 4 ... rotating shaft of rolled electrophotographic recording paper 3, 5 ... bearing plate, 6 ... light shielding The covering member of 7,
8 ... Guide plate, 9,10 ... Roller, 11 ... Control device, 12
... a cutting device (cutter) having a well-known configuration including a rotary blade 12a and a fixed receiving blade 12b; 13, a rotary drum; 14 ... a recording paper starting end position regulating member in a recording paper cueing mechanism HP; 15 ... Recording paper pressing roller, 16, 17
... Suction port (elastic suction cup) of suction device, 18 charger, 19 power source, 20 motor, 21 rotating mirror wheel, 22
... Semiconductor laser, 23 ... Lens, 24,25 ... Reflector,
26: Pre-bath device, 27: Support plate, 28: Roller, 29 ...
Bottom plate, 30: pre-bath liquid container, 33 to 37: wet developing device, 38 to 42: electrophotographic wet developer container, 45:
Transfer belt, 46, 47 ... sprocket, 48 ... rail, 4
9 Lifting device, 50 Cam plate, 51 Cam shaft, 53 Rotary shaft of roller 52, 54 Substrate of lifting member, 56 Mounting plate, 58, 59 Guide rod, 61, 62 Guide part, 64 …
Support stand, 65: air guide tube, 66: fixing unit, 68: static eliminator,
69: guide plate of paper discharge unit; 70: heat fixing unit for planographic plate (printing plate); 74: rotating shafts 74, 75, 76 of rotating drum 13
... Ventilation pipe, 77 ... Movable ventilation path member, 78 ... Shallow groove, 8
0,86 ... vacuum pump, 83,89 ... vacuum switch, 9
2 motor, 93 reduction gear housing, 94 power source mounting plate,
97: output shaft of the reduction gear, 98: coupling part, 99,
100: Frames having a U-shaped cross section, 101, 102
... machine plate of image recording apparatus, 103 ... shaft, 104 ... ball bush, 105 ... sliding member, 106 ... pin, 108 ... connecting plate, 109 ... locking member, 110 ... pressing roller position control plate, 110a, 110b ... Guide grooves, 110c: long holes formed in the pressing roller position control plate 110, 111, 1
12 ... pin, 113 ... cam shaft, 114, 115 ... cam plate, 116 ... frame 99 (10
0) The linear portion of the through hole provided in the side plate 99b, 1
17: Roller shaft support, 118: Rotating shaft of pressing roller 15, 119: Spring, 120: Hole, 124: Sensor, 125: Dog, 126: Positioning block, 12
7. Positioning pin, 128, 129 Rail member, 13
0, 131: connecting rod, S: spacing piece, HP: recording paper cueing mechanism,

Claims (1)

(57) [Scope of request for utility model registration] 1. A recording paper starting end for cueing a recording paper in a generatrix direction of a rotary drum at a specific position near a top on a downstream side of the rotation of the drum with respect to a top of the rotary drum for winding and carrying the recording paper. A position regulating member fixed to a rotating shaft extending in the generatrix direction of the rotary drum at a specific position on the upstream side of the drum rotation near the recording paper start position regulating member, and The recording paper pressing roller provided so as to be able to move freely to and away from the rotating drum in relation to the positioning operation of the leading end of the recording paper by the member, and the leading position by the recording paper starting end position regulating member described above. In order to adsorb the vicinity of the leading end of the recording paper in the regulated state and the vicinity of the end of the recording paper to the outer peripheral surface of the rotating drum, respectively, After the recording paper start end is vacuum-sucked to the outer peripheral surface of the rotary drum, the recording paper start end position regulating member is detached from the rotary drum surface, and the recording is performed with the recording paper pressing roller pressed. Means for rotating the rotating drum so that the paper is tightly wound around the peripheral surface of the rotating drum, and providing a means for vacuum-sucking the end of the paper recording paper. Winding device.