JPS58111958A - Exposure control device in image forming device - Google Patents

Abstract

PURPOSE:To prevent the heating up in a copying machine by the heat of an exposure lamp for original by making the lighting time of the lamp short in copying of the 2nd and succeeding sheets. CONSTITUTION:When the operator pushes a copying button, feeding of copying paper is started, and upon lapse of 0.45sec, an exposure lamp is lighted, and further upon lapse of 0.3sec, electrostatic charging and moving of an original plate are started. In copying of the 2nd and succeeding sheets, control programs are changed over to a control routine MULTI1 for multicopying, and the start for lighting of an exposure lamp is delayed by 0.1sec. In this time, the lamp is sufficiently warmed up; therefore, as compared to the copying for the 1st sheet, the intensity of exposure is identical. Equally good results are obtained by changing the lighting time for the lamp according to the temp. in the machine or the time elapsed from the start of the previous lighting.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a light path control device in an image forming apparatus.

Technical Background of the Invention and Electron Points In a conventional image forming apparatus, for example, a copying machine that illuminates an image of a document by lighting an exposure lamp and makes a copy, when making the first copy, Because the temperature inside the aircraft is low, road light control is performed to ensure sufficient preliminary lighting time for the merging lamps.

However, in such conventional copying machines, the lighting time of the exposure lamp for high light is always set to be constant, not only during the first copy but also during continuous copying.
For this reason, there is a problem that the processing time for continuous shooting becomes long, and there is also a problem that the internal temperature of the device increases due to the longer lighting time of the exposure lamp.

Purpose of the Invention The present invention has been made to solve the above problems.#)
ii) It is possible to shorten the processing time and suppress the temperature rise inside the machine when performing continuous image formation.ii! An object of the present invention is to provide a light path control device in an um forming device.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention shortens the lighting time of the first path light lamp and the subsequent lighting time of the exposure lamp when continuously producing image lines and light in an image forming apparatus. The present invention is characterized in that it is a side light control device that performs such switching control.

Examples of the invention The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a schematic front sectional view of an image forming apparatus, such as a copying machine, having an exposure control device according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a housing of a copying machine, and a photoreceptor 2, such as a selenium drum, which is rotatable in the direction of the first arrow in the figure is provided approximately in the center of the housing. At the top of the housing 1, there is provided a document table 3 on which a document can be placed and movable in the directions of the first arrows B and B' shown in the figure. An exposure lamp 4 is provided to irradiate light onto a document placed on a document table 3, and by moving the document table 3, light can be irradiated from one end of the document to the other. A lightless device 8 is provided which exposes the surface of the photoreceptor 20 by irradiating the surface of the photoreceptor 20 with light reflected from the original through the first mirror 5, lens unit 6, and second mirror 7.

Further, near the photoreceptor 2, a static eliminating lamp 10 that first removes the surface charge of the photoreceptor 20 along the direction of rotation of the photoreceptor 20, and a charging device 11 that charges the surface of the photoreceptor 2 are installed. The surface of the photoreceptor 2, which has been charged after static electricity removal, appears to be exposed by the exposure device so that a static latent image is formed thereon. Another charging device! A developing device 112 is provided ahead of i11 to visualize the electrostatic latent image using a developer (hereinafter also referred to as toner). a toner hopper 13 that accommodates toner in the developing device 12;
The toner supplied from the toner hopper 13 is made into a brush shape by a conveying magnetic roller 14 rotating in the direction of the first arrow C in the figure, and brought into contact with the surface of the photoreceptor 2, and a magnetic brush developing device 15. It is arranged in the housing 1 in a detachable manner. A hopper cover 131 that can be opened and closed is provided at the upper end opening of the toner hopper 13, and an opening/closing detection magnet 13b for detecting opening/closing of this hopper cover 138 and an opening/closing detection magnet switch 13C for detecting this magnet 13b are provided. ing. Furthermore, a paper feed device is provided at the front of the image device 12 for feeding paper below the photoreceptor 2! 20 are provided.

First, this paper feeding device i20 is a paper feeding cassette that is detachably attached to the side of the housing 1 and stores a plurality of sheets of paper. 1 and a fifth paper feed roller 22 for taking out sheets of paper one by one from this paper feed cassette 21.
At the top, a manual paper feed cassette 23 that enables manual paper feeding and cassette paper feeding with one cassette is attached to and detached from the side of the housing 1 via a paper feed mechanism 24 for the manual paper feed cassette. A second paper feed roller 25° 25 is provided which is freely disposed and sends the paper fed from the manual paper feed cassette 23 to the other side. Aligning rollers 26 and 26 for positioning and conveying the leading end are provided. Further, on the other side of the paper feeding device 20, there are aligning rollers 26 and 26 for aligning the developed image formed on the surface of the photoreceptor 2.
A transfer charger 27 that transfers images onto a sheet of paper conveyed by the image forming apparatus 1, and a peeling charger 28 that peels off the sheet onto which a developed image has been transferred from the photoreceptor are unitized and removably provided on the body 1. Note that since the outer diameter of the photoreceptor 2 is about 80 cm, there is no need for a conventionally used peeling claw or the like to peel off the paper.

In addition, a cleaning group is located ahead of the peeling charger 28 to collect and deposit toner remaining on the photoreceptor 2 after transfer.
29 are provided. The static elimination lamp 10 is arranged along a part of the outer periphery of the photoreceptor in the longitudinal direction and is maintained at a constant distance from the surface of the photoreceptor.
It is attached to 29.

A suction conveyance device 5 conveys the peeled paper after transfer.
0 is set. In this case, a plurality of flat belts 31 provided with a plurality of holes are rotatably connected to guide rollers 32, 32, 32.
A suction duct 35 connected to a suction blower (not shown) is arranged so as to be in contact with a part of the inside of the flat belt 9, so that the paper is attracted to the flat belt 31 and conveyed. ing. In particular, if such a suction conveyance device 30 is used, sheets of various sizes can be conveyed with an extremely simple configuration, and the cooling efficiency within the housing 1 can be improved by using the suction duct 36. Ventilation efficiency can be improved.

Furthermore, a fixing device consisting of heat rollers 35, 55, etc. for fixing the developed image transferred to the paper conveyed by the suction conveyance device wL30! 36 is provided to trap the fixed paper so that it is taken out to an external paper ejection tray 68 via paper ejection rollers 37 and 37. Note that in the figure, 39 is an exhaust fan. Further, the lightless device 8, the developing device 12, the transfer charger 27, the peeling charger 28, the cleaning device 29□, and the suction conveyance device 30 are completely integrated into a unit and can be easily attached and detached from the housing 1. This reduces manufacturing costs and eases maintenance errors.

Next, a mechanism for opening and closing the cylindrical body 1 will be explained with reference to FIG. 2. FIG. 2 is an overview of the photo camera shown in FIG. 1. The casing 1 is divided into two parts, an upper casing and a lower mounting body 1B. The other end of iB is opened at a desired angle (for example, 30°).

Note that one person in the upper housing includes the photoreceptor 2, document table 3, exposure device 8, developing device 12, cleaning device 29, one upper side of the second paper feed roller 25, and one upper side 26 of the aligning roller. are attached, so both gill bodies 1A, 1
When the end of B is opened at the desired angle, it is opened almost along the paper conveyance path as shown by the double-dot chain JIL in FIG. 1, and the jammed paper can be removed and cleaned.
9 and the photoreceptor can be easily removed. Further, a biasing member 41 is provided at the intermediate portions of the front and back sides of both molds and bodies IA and IB, and this biasing force causes both mold bodies IA and IB to be opened by a desired angle. Main part 1 As shown in Figure 1, the upper housing 1
A lever 42 is rotatably supported at the open end of the lever 42, and a stopper 43, which is provided at the free end of the lever 42 and locks a nine hook portion 42m, is attached to the lower housing IBK. An operating rod 42b, which is operated by an operator, is attached to the intermediate portion of the lever 42), and can be operated from the outside of the upper housing, as shown in FIG.

Further, a front cover 44, which can also cover the front face of the copying machine and the operation rod 42b, is provided so as to be openable and closable with its lower end as a fulcrum.

For this kind of opening/closing mechanism, one person is required for both types.

When opening 1B to a desired angle, first open the front cover 44 and then push the operating rod 42b in the direction of the second arrow shown in the figure. By this operation, the hook portion 42al also separates from the stopper 43, and is released by the urging force of the distribution urging member 41. Therefore, 71: One person cannot open 1-B without opening the front cover 44, which makes it difficult to completely prevent accidents caused by erroneous operation of the operating lever 42b during copying.

Next, the meshing mechanism of the gears attached to each of the openable and closable bodies iA and 1B as described above will be explained with reference to FIGS. 3 and 4. FIG. 5 is a front view showing an example of a gear meshing mechanism), and FIG. 4 is a side view of the same. In both figures, the symbol ``-'' is applied to a round drive system for driving the drive gear 2d of the photoreceptor 2, and the symbol ``-'' is used as an example.

In the figure, 170a is a drive gear to which rotational force from a drive source (not shown) is transmitted (driving shirt) 170k
The lower housing 1B is provided through the lower housing 1B. Further, this drive shaft 170bK is the drive gear 170a.
A first guide roller 170C having an outer diameter equal to the pitch circle diameter c (also referred to as PCD) is provided concentrically with the drive gear 170a. In both figures, 171m is an idle gear that meshes with the drive gear 1701K, which is rotatably supported by the upper housing IAK and the fixed shaft 171CK attached to the free end of the nine-swing lever 171b. It is pivotally supported. And this fixed shirt) 171C has the song Idol Gear 17
The second guide roller 171d having an outer diameter equal to the pitch circle diameter C of 1a or less (also referred to as PCD) is located at a position where it can be held on the outside of the guide roller 170C of the first gear and the idle gear 1718K. -I feel defeated in my heart. The valuation lever 171b is biased in the direction of the arrow Q shown in FIG. 5 by the biasing member 171.

In such a car control machine, the upper rod body 1m, which has a number of pieces around the fulcrum 40, is closed and completely removed via the footer 42m of the lever 42 and the stopper 43. (see Figure 1), the guide roller 170C of the coil 1, the guide roller 171d of the II2, and the outer plate of O are in contact with each other via the urging force of the urging member 171, so that the drive gear 17G and the idle gear 1 In this way, gears that are attached to each of the integral parts that can be opened using one end as a fulcrum, and that mesh when the housing is closed, can be properly engaged with one pitch. The difference can be resolved by bringing guide rollers into contact with each other, which match the pitch diameters of both gears.
In turn, it is possible to prevent gear damage, wear, and noise caused by meshing errors.

Next, details of the lightless device 8 will be explained with reference to FIGS. 5 to 7. This exposure device vIt8 is configured to be capable of equal magnification and reduction by moving the one lens unit 6 along the optical path. The lens unit 6 is composed of a lens block 50 and an auxiliary lens body 51 rotatably provided on the lens block 50. This lens block 50 is a frame 52 for an exposure device.
It is guided and held by a guide rod 53 attached to the lens and is arranged to be able to reciprocate along the optical path. It has become.

Further, in the auxiliary lens body 51, a frame body 51b to which the auxiliary lens 5U is attached is rotatably attached to the upper end of the lens block 5o integrally with a crankshaft 57. A coil spring 58 is fitted into the crankshaft 57, and when one end of the coil spring 58 is engaged with the lens block 50, the other end is engaged with the crank portion 57m of the crankshaft 57, and the auxiliary lens body 51 is biased in the direction from the top surface to the bottom surface in FIG.

A guide roller 59 is attached to the end of the crank portion 57a), and when the lens block 50 is in the position shown in FIG. Hold the alignment and attach the auxiliary lens body 5.
A holder 60 is provided with a rounded retaining portion 401 that holds the holder 1 substantially horizontally. Further, a partition plate 52m is attached to the middle part of the exposure device frame 52,
One end of a bellows 61 is attached to support a light passage hole (not shown) provided in the partition plate 52a, and the other end of the bellows 61 is attached to one end of the lens block 50. By attaching such a bellows 61, the air near the lens unit 6 will not blow through the light hole (not shown), so it is possible to prevent contamination of the lens unit 6, and also to protect the document surface with the lens unit as a boundary. It is possible to maintain airtightness between the sides and the body side. Further, a light amount detection section 63 having a light amount detection element 65 & for automatic exposure adjustment is provided on the optical path. This is to prevent uneven light distribution to the photoconductor 2 due to the light amount detection element 65&, and the light amount detection element 65a is placed in a holder 63b which has a holder 63b which can uniformly block the upper part of the optical path over the entire light width. Moreover, the light quantity detection cable 63a is arranged so as not to protrude from the tip 63b' of the holder 63b. Further, an angle of view correction plate 65 for correcting light distribution during reduction is attached to the auxiliary lens body 51, and this angle of view correction plate 65 allows the lens unit 6 to be It is arranged at such a position that it meets below the optical path when it reaches the position shown in the two-dot chain line shown in FIG. The light amount detection section 63 at the reduced scale position
This is to ensure that the light is continuous. Furthermore, this-
The angle correction plate 65 can be used with any copying machine that has a reduction function, and can also be attached to a special lens for reduction. When provided on the lower side, it is also possible to provide the angle of view correction plate on the upper side of the optical path.

Note that the exposure apparatus frame 52#i is attached to the upper housing 1λ and can be positioned by placing it on the 92 stays 68.68), and the detachable tension coil springs 69.69. Each stay 68.68 through
The same magnification and scaling effect of the nine exposure device i8 constructed in this way will be explained. In the case of exposure at the same magnification, the lens unit 6 is set to the same magnification position shown by the solid line in FIGS. 5 and 1 via the lens motor 54 and the wire 56. In this case, the auxiliary lens body 5
1 is held in a buried horizontal position by the holding portion 601 and the guide roller 59. In the case of non-lighting at a nine-scale scale, the six lens units are connected to the scale body shown by the two-dot chain line in FIG. 7 and in FIG. Set. In this case, since the guide roller 59 is disengaged from the engaging portion boa, the auxiliary lens body 51 is rotated by the biasing force of the coil spring 58 and is positioned on the optical path.

It is also possible to use the exposure apparatus shown in the lower drawing of FIG. 8 and the partial side sectional view of FIG. 9 in place of the exposure apparatus. The same members as in FIGS. 5 to 7 are designated by the same reference numerals, and detailed explanation thereof will be omitted. The difference is that the auxiliary lens body 51 is changed from the vertical opening structure as described above to the horizontal opening structure.

That is, the auxiliary lens body 51 integrated with the crankshaft 57 is rotatably attached to the front side of the lens plotter 50, and the coil spring 584 fitted into the crank shirt 57 is attached to the lens block 5o. At the same time, the other end is locked to the crank portion 5711 of the crankshaft 57, and the auxiliary lens body 51 is urged in the direction of the eighth arrow X shown in the figure.

A guide 6G1 that guides the guide roller 59 attached to the end ISK of the crank portion 57aO is provided with ', and in the same magnification position shown in FIG. 8, the auxiliary lens body 51
is placed outside the optical path, and when the guide roller 59 leaves the guide 60a' in the scale position shown in FIG. 9, the auxiliary lens body 51 is rotated in the direction of the arrow X shown in FIG. It is meant to be covered.

In particular, with such a configuration, since toner and dust are accumulated and exposed on the auxiliary lens 518, it is possible to prevent the image quality from being adversely affected by dirt on the auxiliary lens 51M.

Next, the tarning device 29 will be explained in detail with reference to FIGS. 10 to 13. This frame is constructed by attaching side frames 71 and 71 to both sides of a rear frame 700.

In particular, the side frames 71.71 are connected to bosses 2892 provided on both sides of the photoreceptor 20, as shown in FIG.
A guide groove 71m171m for guiding and holding the guide groove 171m is provided at an angle (see Fig. 1), and the boss 2''*2 is provided at the end thereof.
Bushes 71b, 71b that engage with the ends of the photoconductor shirt 2b are provided.
A holding part (not shown) provided on the arm and a bush 71
b, 71b and the photoreceptor 2, the photoreceptor 2 and cleaning device 29 can be positioned integrally. In particular, by doing so, it becomes unnecessary to finely adjust the relative positional relationship between the photoreceptor 2 and the cleaning device 29, and assembly and maintenance can be simplified. Inside the rear frame 70, a leaning blade 75 is provided which can come into contact with a part of the outer part of the photoreceptor along the longitudinal direction. That is, one end of the cleaning blade 1511i is attached via the holder 74M to the rotating lever 74 which is biased in the direction of the eighth arrow X in the figure, and the other end of the rotating lever 74 is connected to the solenoid 75. I want to be. In addition, rotation lever 7411
It is pivotally supported by the side frame 71. When the solenoid is activated, the rotating lever 74 is rotated against the force, and the cleaning blade 75 is brought into contact with a part of the outer part of the photoreceptor 2 along the longitudinal direction with an appropriate pressure. It looks like this.

Therefore, in the event of a power outage, the solenoid 75 is demagnetized and the cleaning blade 7s is separated from the photoreceptor 2, so that the surface of the photoreceptor 20 is unlikely to be deformed.

Below the cleaning blade 75, a scattering prevention blade 77 is provided on the rear frame to prevent the toner scraped off the photoreceptor 2 from scattering to the outside. Since this is always in contact with the photoconductor 2, in order to prevent damage to the page surface of the photoconductor 2, for example, 0.5
A magnet 78 is provided below the anti-scattering blade 77. is for collecting the particles stuck to the surface of the photoreceptor.

During development with the magnetic brush developer 15, fine carriers (for example, iron powder) in the toner also adhere to the surface of the photoreceptor, although in small amounts, so that the carrier remaining on the surface of the photoreceptor after transfer is transferred to the cleaning blade 73 and the photoreceptor. Seki Ka with 2
This is to prevent the surface of the photoreceptor 20 from being damaged due to jamming. At the bottom of the rear frame 70, an auger shaft 80 equipped with a spiral auger 801 as shown in FIG. 12 is provided. The auger shaft 80 is rotatably held by the rear frame 70 and the side frame 71, and a spring clutch 81 is attached to the end on the side frame side.

This spring clutch 81 includes a boss 811 fixed to the auger shaft 80, a drive gear 81b that can freely rotate at a predetermined position on the auger shaft 800, and a clutch spring loosely fitted between the drive gear 81b and the boss 811m. It is composed of 81C and 9,
When the drive gear 81b is rotated in the direction of the twelfth arrow F in the figure, this rotation is transmitted to the auger shaft 80 via the idle gear 82. A knob 83 is attached to the other end of the auger shaft. When this knob is rotated in the direction of the twelfth arrow Fi in the figure, the auger shaft 80 can be rotated freely relative to the drive gear 81b due to the action of the spring clutch 81. A coil spring 84 is fitted between the knob 83 and the rear frame 70, and the auger shaft 80 is urged in the direction of the twelfth arrow G in the figure. Pipe portions 7ga and 70b are formed at the end of the rear frame on the side of the rumination fly, and the pipe portion 70b extends downward. A collar portion 7 is provided on the outside of this tube portion 70b.
0C, a holding container 86 that houses and holds a toner bag 85 on which toner collected by the cleaning blade 73 is deposited is detachably held by the flange 70C. This detachable structure is shown in FIG. That is, the holding container 86 is made of a flexible material and has a box shape with an opening at the top, and has claws, for example hooks 86m and f3, at the top of a pair of both sides.
6a is configured to protrude. And these hooks 8
6a I 86! a holding hole 70d that engages and holds l;
70d is provided on the flange, and a hook 868 @
By inserting 86a into the holding holes 70d and 70d, the holding container 86 can be attached to the collar 70C, and by applying a pressing force P in the direction of the arrow shown in the 15th figure, the holding container is deformed and removed. It looks like this.

An actuator 87 is rotatably provided on the side frame 71, one end of which is supplied to the boss 81a, and the other end engaged with a detection end of a microswitch 88.

Note that this cleaning device 29 can be positioned integrally with the photoreceptor 2 as described above, so that the cleaning device and the static elimination lamp 10 attached to the side frame 71 of the cleaning device 29 via the holder 10a The cleaning blade 75, which is attached via a rotating lever 74 etc. that is pivotally supported on the side frame 71 of 29, has a relative positional relationship with the photoreceptor 2 which uniquely determines the work efficiency of assembly and maintenance. can be improved. Furthermore, a cleaning mechanism CM (see FIG. 11) consisting of a photoreceptor 2, a cleaning blade 73, and a static elimination lamp 10 includes a cleaning device 29.
Since the rear frame 70 and the side frame 71 are integrated into a unit, when one person opens the upper housing via the operating rod 42b, the photoconductor shirt 2b is removed from the upper housing. - It can be freely attached and detached from inside the housing 1 by cutting it off or inserting it into the upper part. Therefore, the peeling charger 28 causes a mistake in peeling the paper, and the paper is separated from the photoreceptor 2 and the cleaning blade 7.
3 and 9, the jammed paper can be removed after being removed from the unitized cleaning mechanism CMt-casing 1, so that the dead body that occurs when the jammed paper is forcibly removed is removed. damage can be prevented.

Next, the operation of this cleaning device will be explained with reference to FIG. 14 as well. The toner scraped off from the photoreceptor by the cleaning blade 75 is dropped onto the auger shaft 80, and is conveyed by rotation of the auger shaft in the direction of the twelfth arrow F through the idle gear 82 and spring clutch 81. and the pipe portions 70m, 70
b, and is deposited on the toner bag 85. When the toner bag 85 is full of toner, the tube portions 70m and 70b are filled with toner,
The auger shaft 80 cannot rotate in a fixed position due to its own spiral action. Therefore, the auger shaft 80 is moved in a direction opposite to the direction of the twelfth arrow F against the biasing force of the coil spring 84, and is brought into the state shown in FIG. 14. This movement causes the end face of the boss 811 to rotate the actuator 87 and actuate the microswitch 88. Through the operation of this microswitch 88, it is detected that the toner is full. When a toner full signal is sent from this microswitch 88 to a central control device 161 (described later), the auger shaft 80 is manually turned on via the knob 83 in order to return to the state indicated by a display device 152 (described later). 14Turn in the direction of arrow F and remove the tube part 7.
0b, remove toner filling 70m. By removing the shaft, the shaft 80 is biased by the coil spring 84 and moved in the direction of the arrow G shown in FIG.
The state shown in FIG. 12 is reached.

Next, details of the paper feeding device 120 will be explained with reference to FIGS. 15 to 23.

First, the paper feed mechanism 24 for the manual paper feed cassette is shown in FIGS. 15 to 17.

Fig. 15 shows the top side of this, Fig. 16 shows the front side, and Fig. 17 shows the back side. 90 in each figure
is a holding frame 5 which can be detachably attached to the lower housing 1B via the bins 90a I 90Jl. Is there a rotation lever on the outside of the side wall 90 of this holding frame 90 and 90B? IA and 91B are rotatably supported, and a shaft 92 is rotatably fitted into these rotary levers 91A and 91B. The delivery member and the retention member are provided so as to be movable in conjunction with each other. That is, a feeding member for feeding the paper, such as the 19th paper feed row 93, 93B, is provided at the intermediate portion of the shaft 92 so as to be able to rotate together therewith. Furthermore, an engaging member such as a guide row 2
94A.

94B is rotatably provided on the shaft 92, and is located outside the paper feed roller and extends from the side wall portions 90m, 90.
The guide roller 94A, ? The 4B and 4th paper feed rollers 93m and 93b are rotatable in conjunction with each other.

i9 Rotary lever 91A, ? IB is biased by tension coil springs 95A and 95B, side wall portion 90A,
In the escape notch 90 of the shaft 92 provided in 90B.

It is adapted to be rotated downward within 90B'. Further, a dowel gear 96 is attached to the 15th right end portion of the shaft 92 in the drawing. Furthermore, the rotation lever 91
The post 97 whose pivot point B coincides with the axis is the side wall portion 90B.
9711 said drive gear 9
A first spring clutch 100 is provided between the idle gear 98 and the sprocket 99, which are rotatably attached to the idle gear 98 and the sprocket 99. This 10th spring clutch 100
A clutch spring 100a having a rectangular cross section #1 is fitted onto the outer periphery of the boss portion 981 of the idle gear 98 and the boss portion 99m of the sprocket 99, and the clutch spring 100a has teeth on the outside. A first ratchet sleeve 100b having a first ratchet sleeve 100b is fitted therein. Note that the raised portion 100&' of one end of the clutch spring 100m is the first ratchet sleeve 1.
00b is engaged with the engagement hole 100b'. Main part 17 As shown in FIG.
0b is this first two-cheat sleeve 100b.
A ratchet hook 101m that engages and disengages from the teeth of the first ratchet sleeve 100 is swingably provided, one end of which is biased by a tension coil spring 101b, and the other end of which is biased by a tension coil spring 101b.
It is locked by the teeth of b. A first solenoid 101C is provided below the ratchet hook 10IJI, and when it operates, the ratchet 7 hook 1011 separates from the ratchet sleeper 100b.

Breakaway 9 and 1! Since the clutch spring 100 and the ratchet sleeve 100b are in a free state, when the sprocket 99 is rotated in the direction shown in FIG. 15, the clutch spring 100a is tightened and the boss portion 98! l, 99a and clutch spring 100
Rotation of the sprocket 990 is transmitted to the idle gear 98 due to friction with the inner diameter portion of the sprocket 990. The arm portion 90e of the holding frame 90 is pivotally supported so that the sprocket 103 and the idle gear 104 are integrally rotated in one turn, and the inner sprocket (inner sprocket) 9? , 103Kti The outline of the first turning part in the unit 1 where the ladder chain 105 for transmitting the plowing force is connected to the idle gear 104 at *ζζζζ will be described in I2#4. Figure 15 and 1
71!3, 110 is the aligning roller 24
．． It is a moving shaft for aligning reelers for 24*,
A boss 111 is attached to the am, and the drive gear 112 and sprocket 115, to which the power of the drive line (not shown) is transmitted, rotate freely. The r! between the boss 111 and the sprocket 113 is lJK is j120
A spring clutch 114 is provided. This @2
The 0 spring clutch 114 has approximately the same shape as the first spring clutch 100, and the 20th ratchet three:/114a has a #l shape in which the ON rotation is not controlled.
e do j (pu 171120 rotation C 15th IlB and 17th
Kt so that the illustrated arrow J, direction) is fitted to the drive shaft 110 for the Aquiengoots through the boss 111.
)ing. 5Pvh and 1 in Figure 5 and Figure 17
15 is a drive shaft for the 20th paper feed roller for the second paper feed roller 4-225, 25*, and a boss 116 that rotates together with the m1lK hole is attached, and a RI ladder chain 117 is installed inside the boss 116. The sprocket 11B, to which the S power is transmitted, and the drive gear 12G, which transmits the driving force to the m idle gear 104 via the middle gear 119, are integrated so that they can rotate freely. A 50th spring clutch 121 is provided between the boss 116, the sprocket 118, and the O-gate. The spring clutch 121 of this building 5 is the first version 2
It has a spring clutch 114 and a rotary structure, and if the rotation of the ratchet sleep 121a4 is not controlled, the sprocket 1180 rotations (Fig. 615 and
7 in the direction of arrows J and 7j shown in the figure) reaches the drive shaft 115K@ for the 20th licking roller via the boss 116. Note that the spring clutch 114°121
At the zero point, there is a ratchet lever 122#1l111511 that alternately restricts one rotation of the second ratchet sleeper 114a and the third ratchet sleeper 1211, and 7? It is embossed freely from time to time. This ratchet lever 122 is biased by a tension coil spring 124 so that one end of the ratchet lever 122 is biased toward the end.

When the 20th solenoid 12M is not activated, it rotates against the biasing force of the tension coil spring 124 and one end of the ratchet sleeve 121m is detached from the third ratchet sleeve 1211. The other part is designed to lock the 20th ratchet sleeve 114.

The original image is as shown in Figures 15 and 16. In other words, the idle gear 125 is placed in front of the drive shaft 1150 for the 20th feed Ii 1 kg-ra.
A one-rotation spring clutch 126 is provided on the outer side of the spring clutch 126. This company, biasing member 127
A is biased and the first atcheter 127b is attached to the sleeve 126.
When the actuator 127b is attracted by the paper feed lunoid 128 and detached from the protrusion M124b, the sliding shaft for the paper feed roller of the second roller 2 rotates 1150 rotations to the idle gear 1.
K is set so that it is transmitted to 25 and rotates f1. Furthermore, the drive gear 1 meshing with the idle gear 125
Reference numeral 29 denotes the third paper feed roller 2220 drive shaft (hereinafter also referred to as the fifth paper feed roller sliding shaft) 22, which is provided so as to be able to rotate once in one body. The 50th paper feed roller 22 has drive gears 129 and 11! ! The rotational force of the second feed roller repulsion shaft 1150 is transmitted through the one-turn spring clutch 126 and the idle gear 125, causing it to rotate in the direction shown in FIG. 15 and M14.

A manual paper feeding power set 23 is detachably disposed in the paper feeding mechanism 24 for the paper feeding cassette at the front 1, as shown in FIGS. 18 and 19. Figure 18 is the @-
A sectional m+ view is shown, and FIG. 19 is a top view. In the figure, 1SO is a shaft-shaped O cassette body, and both parts thereof have positioning protrusions tsoa.

150a is attached to the sp D %@wall portion of the holding frame 90? OA,? Install the guide pieces 9Qb and 9Qb inside the OB (Fig. 1s & H @ 14F!!
A reference 11) K11 is attached to the cassette main body 1301m so that it can be removably positioned and held on the holding frame 90. When paper is placed on the cassette main body 1500P31sK, the cassette main body 1301m is placed in a circle. A batter-up plate 132 is provided that lifts the paper tube upward in the 18th drawing via the paper tube biasing member 1s1. And cassette body 1! $
A cassette cover 133 that can be closed is provided at the opening of the 00 top #1-m, and the tenth paper feed roller 93m is provided on the upper surface of the cassette cover 135.

Paper feeding direction according to 95BK, that is, the cassette main body 13
Manual guide 134 movable in the longitudinal direction Kf&i of 0
is popular. If this manual guide 134 is moved in the direction shown by the arrow @16, the manual guides 0*, l
m134at [l period plow lever 91m.

91-8 and tension coil spring 95mm? The first paper feed rollers 93 and 95B and the guide roller 94 are biased downward in the 16th figure along with SB.

? 4BK does not contact the 10th M# roller 95m, 95B
Only the upper layer of paper Kfi in the cassette main body 130 contacts Kt. Front manual guide 134tJ111
14 If you move in the direction of arrow M shown in the figure, the tip 1 of the manual guide
s41 is the tension coil spring 95mm.

The guide rollers 94m and 94B are lifted against the biasing force of the 95BO to separate the tenth paper feed row 995m and 93B from the top layer of paper in the cassette main body IsO. The upper hand guide 1540-mK is a pair of regulating oils that regulate and guide both sides of paper to be manually fed.
! ! SM, 1s5B are provided so as to be relatively movable.

This is as shown in 20110, which shows the 1 & stroke of the manual guide. Manual guide 1$4 @kee pair 0*hole 1s4
A, 1s4BK Said Zenshi guide 1s5mu, 1! ! 5B is placed in the movable W, each parent 114 dome 135, 13S
BK is yy1154mm.

154kl or hemlocked facing each other, both racks 1s6A.

A binion 137 that meets 13411 is rotatably supported. In this way, it will be 9, the width of the regulation j 155 mm, 1351 $ width I4
! 1 is extremely good quality.

Note that this paper feeding device 20 is similar to the manual paper feeding cassette 2.
It is possible to use a one-handed manual guide as shown in the figure where only manual paper feeding is possible for the paper feeding mechanism 24 and the paper feeding mechanism 24.

21 and 22 show the main switches provided in the feeder 20, the control switch 7, and the display device that displays the cassette selection status, the copying machine's display, etc. Explain with reference to the diagram. As shown in FIG. 1, the main switch is the second (four paper rollers 25
．． The 250 hand is equipped with a manual paper feed switch 15B, so that the leading edge of the feeding paper comes into contact with the manual feed guide 154 or a manual guide (not shown). The drive unit (not shown) and the disconnection solenoid 12
s is activated, so that the second paper feed truck 25, 2i [k] is operated. As shown in Figure 1 of the main part, the aligning row 224.260 manual switch is equipped with a manual start switch 1!58b, which is similar to the start switch 1 of a copying machine (not shown). When paper is manually fed and the tip of the nine-wheeled boat comes into contact with it, the copying process of 1s light, charging, a-image, etc. is started, and the vapor start detection magnet switch 145B, which will be described later, is activated. As a result, the aligning rollers 24 and 24 are driven, and the timing is set so that the rotation of the photoreceptor 20 is timed.

The manual feed guide 154 of Toeko is in the state shown in FIG. 16] 11K
&, as shown in FIG. 17, the shaft 9
2 is in contact with the actuator 140AK, and the microswitch 140 is activated.
1124.

The output of this microswitch 14◎ is the manual feed paper feed force Cera) 2s and the paper feed $11124 for this is installed, selects the manual feed cassette 23 or paper feed cassette 21. This is the turtle input to the selection control 11150 as a selection signal.

As shown in FIG. 21, the central control unit 1161 can be removably connected to the manual paper feed cassette paper feeder 1124 via the connector 151. ODisplay selection statusj1
It is connected to a display device 152 that includes a selection status display IB 152M and a condition display section 152b that displays the conditions of the copying machine. Furthermore, this 1! A display device (hereinafter referred to as a control panel) 152 is capable of displaying necessary contents of the insert shown in FIG. 22 on a liquid crystal display. When the central control unit 161 and the manual paper feed cassette paper feeder [24] can be connected via the connector 151, the display switching signal 81 is first transmitted to the central control unit 16.
1 and is displayed on the jIll selection status display section 152a. If the paper feed mechanism 24 for the manual paper feed cassette is not installed, the paper feed cassette) 21 and I
o Sheet feeding and illustrated &--sheet feeding from β-id for manual feed and 02 selection -, therefore, the jliiP status display of the rounding cassette is not displayed to prevent the operator from being confused by the tk display. Furthermore, Kfll Manual manual feed paper feed cassette 25 Paper feed mechanism 24Km Chakushimaru and our own paper feed machine 4112
4, the 0 output from the spinal cord detector 153 is input to the central control value ff1141, and the two-way force set 21, 250 is set based on the output of the microswitch 140).
jl! A selection will be made. That is, when the manual guide 134 is moved in the direction indicated by the arrow 16, the micro switch 140 is activated and the output of the cram school is input to the central control all 161, and when the start button (not shown) is pressed. Manual paper feed power set 230 allows paper to be fed from within the cassette main body 130.

In this case, manual paper feeding from the manual guide 134 is mechanically impossible due to the structure of the manual paper feeding cassette 25 and its paper feeding mechanism 24, as described above. In addition, if the manual feed guide V154 is moved in the same direction as the 1611th arrow M, KF
The actuator 140a of the microswitch 1400 is disengaged from the recording shaft 92, and the operation of the microswitch 140 is stopped.If a start button (not shown) is inserted, paper can be fed from the paper feed cassette 21. Manual paper feeding is possible by inserting paper into the machine.

In this way, depending on the position of the differential guide 134) both paper feed cassettes 21, 250. Ii selection is made. In addition, the central control device 161 is connected to the Ura-ki attachment detector 153.
When there is no paper input (i.e. manual paper feed cassette 2)
If a start button (not shown) is pressed when the printer 3 is not installed, paper feeding from the paper feeding cassette 21 is always selected. Main paper feed cassette 250
The operation of the zero-order paper feeder f120, which causes the solenoid 101G to be activated when the paper feeder (130 in the main body of the Rikiryutsu F) is selected, will be explained with reference to FIG.

First, the manual paper feed cassette 23 and the paper feed mechanism 2 for this
We will clarify the operation when 4 and 4 are attached to 1.

If you feed paper from the 250 cassette cassette with embroidery distribution guide, which costs 130 yen for the cassette itself, - distribution difference guide 1! Move I4 in the direction of the arrow H as shown in FIG. In this state (1st?] K shows the state of kneading), as mentioned above, the 10th paper feed roller qsA, 95Bld force set main body 15
It is in contact with the top layer of paper in 0. At this time, when the star) & button are pressed, the power from the drive source (not shown) inside the housing 1 is transferred to the drive gear 112 and the sprocket 1.
15, ladder chain 117, sprocket 118, drive gear 120, intermediate gear 119, and idle gear 10
4, sprocket 103, and ladder chain 105 to sprocket 99. At the same time, the second solenoid 125 is activated and the ratchet lever 12
2 leaves the S-th ratchet sleeve 121m, and the rotation of the sprocket 118 is transmitted to the second paper feed row 225.25 via the third spring clutch. At the time of failure, the first solenoid 101C is activated, and the ratchet hook 101! l leaves the first ratchet sleeper 4 loob. As a result, the rotation of the sprocket 990 is transmitted to the idle gear 98 and the drive gear 96 via the first spring clutch 100, and the first paper feed roller 93 is rotated by the arrow J shown in the figure.
, I turned around and put O1@paper in the cassette body 130**
Feeding and feeding roller 25 for lihiro $1120
．． 25 and aligned roller 24.2.
It is brought into contact with the 40 nip portion. Then, paper feeding starts, and the paper start detection magnet switch 145B, which will be described later.
is activated), the second solenoid 121 is activated, and the ratchet lever 122 disengages the twentieth ratchet sleeve 114Jl and locks the fifth ratchet sleeve 121a.

As a result, the rotation of the drive gear 112 is transmitted to the Aquienda plow shaft 110 via the @20 spring clutch 114, and the aligning roller 24.2
6 rotates and comes into contact with aligning rollers 26 and 26, and the paper is conveyed and fed to the transfer charger 27. Next, when manually feeding paper using the manual feed guide 154, 1. The operator moves this manual feed guide 134 [14 arrow M
All you have to do is move in the direction. When such an operation is performed, as mentioned above, the silver 1 paper feed roller? ! SA,? 3
B is removed from the top layer O paper in the cassette main body 150 and placed in the manual paper feed OII tray (see Figure 2s). The large paper feeding operation via the manual feed guide 134 and the 0#m operation from the Kojiki cassette main body 150 are the same machines. The differences are as follows. First, without pressing a start button (not shown), the leading edge of the paper fed from the manual feed guide 134 activates the manual paper feed switch 138m, which activates the feeder IAI-ra 25.25 of Toyoga II2. do.

'*Circle indicates that the microswitch 140 is not activated'&
%/%0"e11G The first paper feed 1l-19jsm is not plowed through the spring clutch 100. The leading edge of the paper O comes into contact with the manual start switch 131nK). , ex.

As soon as the copying process such as development starts,
Aligning rollers 26 and 26 are rotated via zero spring clutch t14 to feed paper. When the manual feed guide Y134 is being moved in the direction of the 16th arrow M shown in the figure, if the start button 1 shown in the figure is pressed, the paper will be fed from the paper feed cassette 21. That is, when you press the start button (not shown), the Klk
The power inside the body 1 is the drive gear 1 (not shown).
12, etc., to the sprocket 118, and at the same time, the operation of the 20th lunoid 125 causes the sprocket 1
The 18th rotation #i is transmitted to the 20th feed 1Ao-ra drive shaft 115 via the third spring clutch 121. Further, when the paper feed renoid 128 is activated, the second paper feed a-ra drive shirt) 1150 rotations reach the 30th paper feed row 222 via the spring clutch 1246, etc. be done. This is *tss
.

The paper feed roller 22 is shown in FIG. 1, absolutely 151! 1, the paper feed cassette 21 also sends out paper by rotating once in the direction of arrow J shown in FIG. The leading edge of the delivered paper O comes into contact with the nip IIK of the lining rollers 24 and 24. When the paper start detection magnet switch 145B, which will be described later, is activated, the solenoid 2 is demagnetized and the ratchet lever 122 disengages from the second ratchet sleeve 114a. s ratchet sleep 121st locking, dotwip gear 1120 &!
One rotation is transmitted to the asining roller drive shaft 11G. This allows the aligning roller 26°26
rotates once, and the paper is conveyed to the #I transfer charger 27. Manual paper feed force 2S and O paper feed wkIl1 for this
24 is not installed, press the start l button (not shown) to feed paper from the paper feed cassette 21 (operation O
For details, refer to the above and M), manual paper feeding is performed by inserting the paper into the special guide shown in the figure. similar).

Next, the manuscript table 5 will be explained with reference to Figure 1 and also to Figures 24 and 25. Figure 824 shows manuscript table 5.
When is in the home position, the 0111 Zero machine O is approximately correct.
Figures 25 and 25 are schematic drawings of the same. A home position detection magnet 143 is provided at the left end of the document table 5, and a home position detection magnet 143 is provided below it. Magnet switch 143B is up
The Ik body is attached to the back picture. The position of the manuscript table 3' indicated by the two-dot chain mark of Maku [111] is 11m indicating arrow B'
The limit position sensor of the document table 5 that moves in the direction
The limit position detection magnet 144 is attached to the right end of the document table 5, and the limit position detection magnet 144 is attached to the document table 50. Net switch 144i1 is on top * Back picture K1 of housing 1m
1l is attached. 50 Emperors of the Bottle of the Great Phoenix - Kabe! (
When the start magnet 145 is removed, a vapor start detection magnet switch 145B is provided which detects the vapor start magnet 145 and drives the aligning haze roller 26. This manuscript table, 3. The main body (not shown in the figure) is the source.
24 and 25) clutch eLF and clutch CLB (8 directions of arrows shown in FIGS. 1, 24, and 25) clutch CLB. 111 via the main control 5140, which will be described after work.
It is not until the first home position detection magnet 14s is detected by the home position detection magnet switch 143B that the first home position detection magnet 14s is moved in the direction of the arrow B' shown in the figure. If the start button (not shown) is pressed while the document table 5 is not at the home position, the document table 6 first moves in the direction of arrow B shown in #11, Ks, and
The home position is set and the machine is moved in the direction of the first arrow shown after nine.

Therefore, when the hopper cover 13atNtt provided at the top of the toner hopper 130 is located at the edge where toner is replenished, the operator can return the document table 3 to the home position (it is possible to make copies). It is possible to improve the operability of planes and knives.

The configuration and operation of the main control section 160 will now be explained based on Figures 26 and 27. In the figure, it is 141t.
I-Cook central control! ill, and the detection magnet switch 130.14! S8.144B, 145B)O
input the output of the home position detection magnet switch 143B to disconnect the document table 5 from the main position, and input the output of the vapor start detection magnet switch 145B. Driving the Atsuining a-ra 26.26, the scolding position 1
Detection! Input the output of Dunnett switch 144B) to move back the document table 5 and detect the closure! The output from the Dunnett switch 13g is input to prevent the JIK bucket stand from retreating. Maku Count) 10% after the beginning 8
A counter 162 is provided to output an output signal, and the central control unit 161 executes an interrupt program, which will be described later, by inputting the output signal of the counter 162. In tkshi II, 16s is the aligning roller, ** stand, and the light fixture W18. IT image device 1
12. It means all copying mechanisms such as the sensory body 2.

The interrupt program is executed based on 70- in FIG. This is for example 100 while the main flow is running.
*This is done every time the hopper cover 138 mentioned above is open or not. Sm out! The operation is determined based on the state of the Dunnett switch 13C, and it is a rounded type that stops the retraction (backward movement) of the document table depending on the result.

First, to accept each input, set the timer count after the round.
l#L, O1 to the control spring body! After moving the hopper cover 13m, it is determined whether or not there is sushi in the hopper cover 13m. When the IPJ is disconnected, the motor rotates all the way, and the hood ``0'' indicating that it is closed is obtained at 1 and 11, respectively. When the OP drama Futsuda "1" reaches 9, the pigeon loft where the x Hiro motor is rotating will again determine whether the PiAN futsugu is "1" or not.
When it is “1”, the IIl loading platform reverse clutch (T-B
-CLT) is turned off. And the 0PEN flag is “
If it is not "1", the IK interrupt processing is ended and the process returns to the first flow.

Next, the overall operation of the present invention will be explained without referring to the flowcharts shown in FIGS. 29 to 45. In addition, in the following operation explanation, manual paper feed switch manual start switch cm-a'ra-aw), solenoid 112 1231 paper start solenoid (P-8T
0L), -Ki Il tatsutute C1, B to tape body tatsutatsuttsuchi (T-B-CLT), 或KI-SUMMARY clutch CLF
Table 7 award clutch (T-FWD-CLT)
, the manual paper feed cassette 2S is an optional cassette,
The paper feeding power unit 21 is a self-plow paper feeding cassette or a paper cassette, the start button (not shown) is a print key or a Hiro start key, and the Kaburuki Renoid 75 is a platen lenoid.
The paper feed solenoid 12S is set to a paper feed solenoid (1'-FlgD-8OL), the *torque device 11 is set to a developing bias ()iVT-M), and the above-mentioned terminal 20 111a-
The roller 25 is a manual feed roller, the paper feed roller 22 of Kojiki 3 is a feed roller, the paper start detection Madanetsu F switch 145B1 paper start switch, the vicinity of the Sonoki transfer charger 27 is a transfer section, and the fixing device 134 is The fuser, - mark lll0 solenoid 1θIC, so-called infeedlenoid (01'-rlcM, n-
aoL), -1 1st t) 111111 o -595
The 1°9SB is called an optional feed roller.

First, referring also to Chart No. 2911070, in the copying process, all the waiting operations of the paper feeder I 11 times are performed until the 11th line is reached. Accepts numbers, accepts multipliers.

(Rikikat selection fee is charged. In this ζ, when the option cassette 25 is inserted as described above, only the option cassette 23 is set to 114R, and the automatic paper feed cassette 21 is selected. Also, the optional cassette is inserted and the manual feed guide 1s4 is the first one.
When moving in one direction as shown in FIG. 6, the automatic paper feed cassette 21 is selected and the option cassette 2s is not selected. ζO When the cassette selection is performed in this way, the next Kj
I selection It is determined whether or not there is paper in the cassette, and if there is no paper, #i no paper is displayed. When there is paper in the cassette, when the paper is replenished, the cassette type OII indication will be displayed. Next, the toner main brim cover 138011 closed embroidery l indicates 0FIN72/ is r 1 j"e or not is 41WIft and if it is "1" d "-B Town" display goes out and the first 70-Kjl is displayed. Turtle.

0PEN hook is not "1" - Sometimes the next manual tweed switch (M-F-8W) 151m hot condition]
11) It is determined whether the manual paper feed slot KJilt is inserted. At this time, when Ranki option 23 is selected, manual paper feeding is not performed, or when option cassette 25 is selected and tk%fh (optional cassette is not inserted). However, when the manual feed guide is moved in the direction of 0M77 in Fig. 16, and when the optional cassette is not inserted, the manual feed guide or the manual feed guide (not shown in the figure) below is only used for manual feed. The main motor is turned on and the paper start solenoid (P-8TR) is turned on when there is paper in the manual feed slot. -8OL) 123 on, next K
t) It is determined whether the PICN flag is “1” or not, and the PICN flag is “1”.
The motor is stopped and [Manual paper feed error]
O is displayed, it is determined whether or not the paper has been removed from the manual paper feed slot, and the initial flow KN6, ζO is displayed.
@01'KN If the 7 ladder is not set to "1", then -r feed switch (M-1?-8
W) It is determined whether 1TR8m is on or not, and if it is on, the copy processing is stopped after the predetermined time has elapsed, and the motor is stopped.
Move to the flow displaying "Manual paper feed error".

If there is no paper in the manual paper feed slot, a determination is made as to whether or not there is no paper, and it is determined that there is no paper out, and the image is not output. It is determined that paper is being fed, and the print key C (copy session error) is pressed or not and is cut off. If it is pressed, the printer moves to the next copy flow. Next, turn on the power and check the operation until the Mukaibe device is ready.
This will be explained with reference to the flowcharts in Figure 31 and Figure 31.

When the power is turned on (power 0N), the exhaust fan 39 is turned on and cooling inside the aircraft is started, and at the same time the power is turned on (power 0N).
1) Supply of power (C power supply) is started・Next, heat roller 3
It is determined whether the toner pack is full or not depending on the operation status of the toner full switch, and if it is full, a message to that effect will be displayed and the toner pack must be replaced. If the lens is at the 1x position (also called the 1x position or the initial position), it is determined whether or not the lens is at the 1x position. If the lens is not at the 1x position, the lens is returned to the %x position. If the lens is at the 1x magnification position, the lens is returned to the %x position. Playdornoid (BL
D-8OL) is turned on, the Talleyung blade 7s is pressurized, and the static elimination lamp 10 is lit. Predetermined time I
a Transfer charger 2 is turned on and the transfer charger 2 is turned on.
7. @-Charger 28. When the developing bias 11 is turned on, the heat roller solenoid (ll-4
OL-8OL) is turned on), and the heat roots s5 are pressurized. Then, it is determined whether or not the heat roller 2 is ready for fixing, and if there is no possible temperature change, a predetermined time (11 seconds, #17 seconds) has passed after the heat roller solenoid (H-ROL-8OL) is turned on. If the time has elapsed, it is then determined whether or not there is paper on the paper path, and if there is paper on the paper path, [paper t, t) J is displayed. It is done.

In the above flow, the heat roller 55 reaches a fixing temperature j[
When it is K, Mori, Heat Rollan Lenoid (H-
If 1.1 seconds or more have elapsed since turning on the ROL-8OL, it is determined whether the paper is round or not. If it has elapsed, it is determined whether or not there is paper on the paper path, and based on the result, it is the same as the above judgment flow. processing is performed. Next, the heat roller solenoid (H-ROL-8OL) is turned off, the heat roller pressure is released, and after a delay of 0.6 seconds, the main motor is turned off), and after a further delay of 0.8 seconds, the blade solenoid (B
(LD-8OL) is turned off, the cleaning blade pressure is released, and the static elimination lamp is turned off. Then, it is determined again whether or not the temperature of the heat roller is at a fixable temperature, and if the heat roller is at a fixable temperature, the heat roller enters a standby state.

Finally, the copy operation will be explained with reference to the flowcharts of FIGS. 52 to 45.

The copying operation will be explained separately in the case of -) automatic paper feeding, automatic paper feeding by the option cassette 23, and ←) first manual paper feeding operation selected by the option cassette 25.

-) When using automatic paper feeding (paper feeding cassette 21) (32nd
(Fig. 35) (Fig. 35) ζIf the manual feed stand is attached, there is no need to select the cassette, but if the optional cassette 23 is installed, move the manual feed guide in the direction M in Fig. 16. If the optional cassette is removed, automatic paper feeding using the cassette 21 is selected.

Press the start key on the control panel and the paper feed solenoid (P-PEIED-8OL)1
28 and Paper Starton Lenoid (P-8TR-8
0L) 123 are both off) aligning roller 26
rotates, and the manual feed roller 25 and feed roller 22 stop. At this time, cleaning blade 7
The second pressurization is performed and the drum static elimination lamp lights up. After 200 seconds * seconds have elapsed, the blade pressurization is completed, the main motor is turned on, the blower is turned on (starting with 11th paper), the 1st paper detection lamp is turned on, and the high pressure is turned on). The transfer charger, peeling charger, and developing bias were turned on), and after that, 300 years passed and the first film was applied! (During this time, the heat roller renoid (H-ROL-8OL) is turned on with the developer constantly rotating)
The heat roller is pressurized. If reduction mode is 0, t
i At this timing, the image both ends erase lamp is turned on.

After that, after 300 minutes, the exposure lamp turns on at the front membrane level (if the document table is not in the normal position during this time, return it to the normal position), and after 10◎-years have passed, the paper star noid turns on. Become.

Paper start solenoid (P-8TR-8QL) 1
The paper feed solenoid (P-FEED-80L) 128 is turned off when 25 is turned on, the aligning roller 26 is stopped, and the manual feed row 2 is turned off.
After 25 rotations, the feed roller 22 stops.

Paper start solenoid (P-8TR-8OL) 1
After 10 (1 wm has passed since 25 turns on, the paper feed solenoid (P-FEED-8OL) 128 turns 1.
00wase turned on>, at the same time Alino roller 26 stopped, manual feed roller 25
1! ! As the feed roller 22 rotates once, the paper is fed from the sand cassette by the feed roller 22011, and its tip is pushed against the aligning haze 224. ×1 paper feed solenoid (P-FEED
-1OL) 128 is turned off, the charger is turned on at 9I, and the document table starts moving forward. In addition, the reduced size
Wait for dos 0 and -145j1 to turn on (alignment).

At this stage, atIl is formed on the drum, and its i
l It is processed in a developing device.

Paper start switch (P-8T14-8W) 14
When 5is is turned on, Paper Star Dornoid (P-8
T&-8OL) 123 & paper 7 (-V solenoid ()'-FEEL)-8OL) 128 are both off)
, the aligning roller rotates, and the feed roller 25 and the feed roller 22 stop immediately. The paper for alignment is sent to the transfer section by an aligning roller 26. Paper Star Dornoid (P-8TR-8OL
) 125 is turned off, the counter (CTR) starts to pick up, and the round paper is sent to the transfer section, and after the toner image is transferred, the paper is separated from the drum and transported to a constant NI! It is sent to the iF, fixed by the fixing device, and ejected to the round paper tray.
Paper detection bK waits until the trailing edge of the paper is detected.

turn on. 40s kick progress Il edge draft stand O 藺 progress is stopped.

ζO and the toner am supply the si passing d toner.

After that, 1G (after 1+aw+, the document table starts moving backward and turns off the agricultural light lamp 4. Press ζζ to interrupt the explanation)
As explained in section n-, if the toner O hopper cover 131 is removed even once, the IIA draft table O will not move backward and the copying operation will not continue thereafter.

One IIA stops when the document table returns to its normal position.

In the case of 1bee (multi-bee) with ζζ, JiI party lamp (IXPO-LANP) with this tying.
Light up 4 and at the same time the paper star) 7/()
'(P-8Ta-8OL) 123tyO flow will be taken to the dormitory. ζO Yang He, the 1st and 2nd multi-copy sheets have different Fujiko lamp 40 on-tyings, and for 2 & et al., tiI & Tai no Soreyo Juku are also 100
It's delaying the beast. In other words, from the second sheet onward, one sheet aoit
The light lamp (EXPO-LAMi") 4 is set to be shorter than the lighting time. This is set as follows.
By myself.

■In the first photo, there is a high possibility that the party lamp 4 is cold, so it must be kept for a long time as a preliminary point. The estimated lighting time is based on the fact that it is good to avoid mosquitoes, and it is better to keep the lamp 4 lighting time as short as possible in order to reduce the rise of 0111 wrinkles in the cabin. In addition, it is desirable to switch the on-timing of the lamp by detecting once in the aircraft, and in order to know the preliminary lighting time of 4 hours, it is necessary to judge by checking the time after the lamp has been lit once. I do it
Preferable rounding, such consideration is taken in this actual kHz -
Wow.

When the copying operation for the last sheet of single-sheet copying or duplicate copying is completed, the "copy possible" lamp lights up, and a paper jam (JAM) is detected by the exit switch. Next, the heat roller lenoid (H-ROL-8OL) is turned off, the both-end erase lamp for the reduction mode is turned off, and the pressure on the heat roller 35 is released. Then 600m5
When e has elapsed, the main motor, blower, paper detection lamp,
The high voltage transformer (for transfer, peeling, and development bias) is turned off. When the motor completely stops after 800 m, the pressure on the blade is released and the static elimination lamp is turned off.

--) In the case of automatic paper feeding using an optional cassette (No. 36)
Figure ~ No. 39 Encyclopedia) Here, manually feed paper cassette (optional cassette) 2
If the manual feed guide is moved in the L direction in FIG. 16 after setting 3, automatic paper feeding using the optional cassette is selected.

First, when you press the start key, paper foot solenoid (P-FEED-8OL) 12B, paper stardle noid (P-8T-5OL) 125°, optional feed solenoid (OF-FEED25QL) 101
Both C are off, 9, aligning roller 26 rotations, feed roller 25 stopped at manufacturer, feed roller 22
Stop, and the optional tweed rollers 95A and 95B stop. This lol! On the floor, the cleaning blade 7s is pressurized and the drum static elimination lamp is turned on, and after 2005m5e, the main printer, blower, paper detection lamp, and high voltage transformer are all turned on. Then, after 500 cycles, the heat roller solenoid is turned on. In the case of small and fine mode, the Isso-Ken end erase lamp is turned on at this timing.

Further, if the document table is not in the normal position 11, the document table is narrowed to the normal position. After that, 1505m has elapsed since Topehar x I -
) 7 L// 4 )” (P-8T & -80L) 12
3 is turned on, option feed solenoid Y (UP
-ni'Mml)-MOL)101C4#y&ru.

- Paper feeding begins when the solenoid is turned on.

Wholesale, aligning roller 26 stopped, manual feed roller 25 rotations, feed roller 22 stopped, optional feed roller 95mm, L3i $ig 1 rotation,
The paper is annealed from the cassette by optional feed rollers 95 and 93B, and then by manual feed roller 25.
The paper is fed to the aligning roller 26 by the paper.The paper is turned on for 1.1 seconds, and after this time the paper is pushed to the aligning roller 24 and spills out.

When 450 m5 ec has elapsed since the start of paper feeding, the front light lamp 4 is turned on (at this time, the paper feed roller is not turned on). Then, when 200IIImg has elapsed, the charger in area 11 is turned on) and the document table starts moving. Then, after 350*se has passed, the option feed solenoid (01'-k'BB1)-8OL)1
01c is off, then paper start switch C
P-8T几-8W) 145B was turned on.

Optional feed solenoid (OF-FEED40L
) When the IOIC turns off & the paper start solenoid (1'-8T & -8QL) 125 turns on.

Paper 7 (-doso v) 4 V (P-FEgl) -80
L) 128 is turned off. In other words, aligning row 2
26 stops, manual feed roller 25 rotations.

Feed roller 22 stopped; optional feed roller 9
3A and 95B are stopped, and the leading edge of the paper hits the aligning roller 26 and stops. At this time, the manual feed roller 25 is rotating, but since this roller is a slip roller, the roller slips from IIK of the paper, and the paper does not actually advance.

Next, the paper start switch (P-8TR 4 145
When B is turned on, Paper Star Dornoid (P-8T
R-8OL) 125 is turned off and the counter is counted up. Paper start solenoid (P
-8TR-8QL) 125 is turned off (paper feed solenoid off, option feed solenoid off), the alignment 10-526 rotation, manual feed roller 25 stop, feed roller 22 stop, option feed rollers 93A and 93B stop, and the paper is (by the lining roller 26) to the transfer section. after that,
i Niall feed switch (M-F-8W) 138a
When the trailing edge of the paper is detected, the charger is turned off and the advance of the document platen is stopped after 100 steps have passed. At this time, if the toner density is low, toner is replenished and 1
After 00 m5e elapses, the document table starts moving backward, and the lightless lamp 4 is turned off.

The subsequent operation flow is exactly the same as the operation flow during automatic paper feeding described above.

←) When the option cassette 25 is selected and manual paper feeding is performed first (Figures 40 to 45) In this case, if the manual feed stand is attached, no special operation is required, but if the option cassette is installed. TokiKa
Move the manual feed guide in the direction M in FIG.

Then, when you insert paper into the manual paper feed slot, Manual 7 (
-V switch yfCM-P-8W) 158m is turned on. At this time, the cleaning blade 73 is pressurized, the drum static elimination lamp is turned off, and after 200w*se has elapsed, the main motor and blower are turned on.

The paper detection lamp, high voltage transformer, and paper starter lenoid (p-8TR-80L) 1zs are each turned on. When the paper start solenoid is turned on (the paper feed solenoid is also turned on), aligning roller 2
The manual feed roller 25 is stopped, the manual feed row is rotating 225 times, and the feed roller 22 is stopped.The manual feed roller 25 feeds the paper to the aligning roller 26. Paper start solenoid CP-8TB-8QL)
125 is turned on, the heat roller solenoid (H-ROL-8OL) turns on (
In the case of a reduced screen, both end erase lamps are turned on). In this state, the manual start switch (M-87R-8
W) It will wait for 136b to turn on. At this time, if the document table is not in the normal position, the document table is returned to the normal position. Even after about 4 seconds have passed, the manual start switch (
M-8TR-, 9W) If 138b is not turned on, the operation will be stopped. and manual feed switch (M-F-
8W) Instruct the display to remove the paper until the 13811 turns off, then turn off the manual feed switch (M-F).
+51W) When 138a is turned off, the normal state returns. Manuals I-) S4 yf (M-8TR-8W)
13gb Kaonshie timing) After the s00 sting flag has passed, the Km original lamp is turned on, and that ll! 100 sea bream M:
After that, the charger turns on), and the document table starts to move forward ◎-to, then press the paper start switch (P-
Wait for the 8T (P-8W) 145- to turn on, and the paper start switch turns on &-')& the paper start solenoid (P-8T-8OL) 123 turns off. Paper start solenoid (P-8TR-8OL3
When 12 & is turned off, the aligning roller 26 rotates, and the other rollers stop. This aligning roller 2
The paper is sent to the transfer station by 60 rotations, and a copying operation is performed in the same manner as the flow described by the vk company manager.

It is not limited to this example, and various modifications are possible. For example, in the arrangement example, the lighting time O control of the F1 party lamp is uniformly made to be different for the first and second and subsequent photos, and 9 is 1 in Chisha Xu! A medium wave to detect the temperature is installed, and when the temperature is high, the internal temperature is checked at all times, and when the first copy is made with the high temperature inside the aircraft, the lighting time of the exposure lamp is shortened from the beginning. Alternatively, if the elapsed time from the previous copying operation to the next copying time is short, the lighting time of the exposure lamp may be similarly controlled to be shortened.

Effects of the Invention According to the present invention detailed above, since the lighting time of the non-light lamp can be set as accurately as possible, the processing time during continuous image formation can be shortened, and It is possible to provide an exposure control device for an image forming apparatus that can suppress a rise in temperature inside the apparatus.

[Brief explanation of the drawing]

FIG. 1 is a schematic front sectional view of an image forming apparatus, such as a copying machine, having an exposure control device according to an embodiment of the present invention, FIG. 2 is an overview of the copying machine shown in FIG. 1, and FIG. 4 is a side view of the engaging mechanism, FIG. 5 is an explanatory diagram showing the lightless device in the double position, FIG. 6 is an explanatory diagram showing the light amount detection section, and FIG. The figure is an explanatory diagram showing the scale position of the Koko device shown in FIG. 5, and FIG. Part in 011 position *
Figure 10 is an explanatory diagram showing the relationship between the side frame of the cleaning device and the photoconductor, Figure 11111 is a schematic diagram showing the cleaning device and tallying machine III, Figures 12 and 13 is a detailed detailed view of the cleaning device 10II, FIG. 14 is a partial action explanatory diagram of the cleaning device, wL15 is a schematic front view of the paper feed an for the manual paper feed cassette, and FIG. 16 is a schematic front view of the VI4 machine. Fig. 17 is a schematic rear view of the same, Fig. 18 is a partial view of the manual paper feed cassette @jl+- side, and Fig. 19 is a wbr same as above.
I! Figure 20 is a detailed explanatory diagram of the same part, Figure 21 is a plotter diagram showing the selection control section, Figure 22 is a schematic diagram showing the display device, Figure 23 is a diagram explaining the partial operation of the supply IIk device,
Fig. 24 is a schematic front view of the copying state when the document table is in the home position, Fig. 25 is a schematic top view of the same, Fig. 26 is a block diagram showing the main control unit, Fig. 27 is a tape Clear flowchart of drive operation),! Figure 28: Ninth flowchart explaining #i interrupt processing, Figures 29 to 4
Figure 5 is for understanding the overall operation of the device of the present invention, and Figure 291 is a flowchart showing the operation of the paper feeder 41111. Flowchart showing operations up to completion of preparation, Figures 52 to 558. Flowcharts showing copying operations using automatic paper feeding, Figures 56 to 39 flowcharts showing copying operations using automatic paper feeding using an optional cassette, and Figure 40. - Figures 45 are flowcharts showing the copying operation by manual paper feeding. 1...k body, 2...photoreceptor, 6...document stand, 4...
- Miscellaneous light lamp, 8 - No light device, 160 - Selection control section, 161 - Central 11nj control device.

Claims (3)

[Claims] (1) In an image forming apparatus that performs image-side illumination by lighting all light lamps, when forming images continuously on multiple sheets of paper, at least the exposure time of the second sheet is longer than the lighting time of the first sheet of paper. A path light control device characterized by performing switching control to shorten the subsequent lighting time of an exposure lamp. (2) A light control device for an image forming apparatus according to claim 1, wherein the switching control timing is set based on an internal temperature of the apparatus. (3) The miscellaneous light control device in an image forming apparatus according to claim 1, wherein the switching control timing is set based on the passage of time from the immediately previous exposure point.