JPH03147657A - Image forming device - Google Patents

Abstract

PURPOSE:To improve the rewinding of a light sensitive paper by installing a rewinding mechanism for turn-driving a rotary shaft in the direction for rewinding the light sensitive paper in the case of a cartridge installed in a cartridge accommodation part. CONSTITUTION:In copying operation, the taking-up by a taking-up shaft 19 is suspended when a color development paper 22 is separated by a separating mechanism 17d through a pressure developing device 18, and the operation for rewinding the not-yet light sensed part (not-yet light sensed part which passes through a light exposure board 10) of a microcapsule paper 11 is carried out. For instance, a gear 34 is revolution-driven in the direction of arrow Z (direction for rewinding the microcapsule paper 11) by driving the motor of a rewinding mechanism 33, and the microcapsule paper 11 is rewound. Further, the rewinding length of the microcapsule paper 11 is detected by an encoder, and rewinding operation is carried out on the basis of the detection.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of application in I!L industry) The present invention provides a method for storing a cartridge in which a photosensitive paper wound around a winding shaft is housed in a cartridge storage section, and The present invention relates to an image forming apparatus that winds up paper on a winding shaft.

(Prior Art) Image forming apparatuses, such as photosensitive and pressure sensitive copying machines that are capable of full-color copying, have a configuration in which a photosensitive paper cartridge is housed in a cartridge accommodating portion of the main body of the copying machine. This cartridge has a structure in which a roll of photosensitive paper is wound around a winding shaft, and the roll is housed in a case. The above-mentioned photosensitive paper is passed through an exposure section, a pressure section, and a separation section in order and then passed around the winding shaft.The photosensitive paper is exposed at the exposure section, and the photosensitive paper is exposed at the pressure section. After forming an image on the photosensitive paper on the image forming paper by pressing the paper and the sheet-shaped image forming paper overlapping each other, the separating section separates the image forming paper from the photosensitive paper and separates the photosensitive paper. The used part is wound onto the winding shaft.

The structure of this cartridge and the cartridge accommodating portion is shown in FIG. That is, a cartridge 62 is removably housed in a cartridge accommodating portion 61 provided at a predetermined portion of the main body of the copying machine, and both ends 64a, 64b of the winding shaft 64 are inserted from both sides of the case 63 of the cartridge 62. stands out. Note that a felt 65 and a plate member 66 are provided on the side facing the photosensitive paper to provide friction to the rotation of the winding shaft 64. Further, the top surface of the cartridge storage section 61 is covered with a lid member 67.
It is designed to be opened and closed by.

In this type of apparatus, the portion of the photosensitive paper between the trailing edge of the exposed area and the leading edge of the area to be exposed next is not affected by image formation and is fed in an unused state. Since the photosensitive paper was wound onto the take-up shaft, there was a problem in that the skewer used for the right-hand effect of the photosensitive paper was low.

Therefore, in order to deal with this, the image forming operation is performed by separating the image forming paper from the photosensitive paper and then rewinding the unused portion of the photosensitive paper that has passed through the exposed part into the cartridge 62. The idea is to reduce as much as possible the unused parts that do not contribute to

(Problems to be Solved by the Invention) In order to rewind the photosensitive paper in one place, it is conceivable to provide a rewinding mechanism for rotating the winding shaft 64 in the opposite direction. This mechanism may include a rotating shaft rotated by a drive source, and a configuration in which the rotating shaft and the winding shaft 64 are connected.

However, in this case, since the cartridge 62 is replaced when it is used up, the rewinding mechanism and the winding shaft 64 can be arbitrarily connected, and the connection can be arbitrarily released. There is a need to. in this case,
It is predicted that the operation for connecting and releasing the connection, as well as the replacement of the cartridge, will be troublesome, and there is a possibility that the attachment and detachment of the cartridge to and from the cartridge storage section, and the replacement of the cartridge, will be troublesome.

The present invention has been made in view of the above-mentioned circumstances, and its object is to be able to rewind photosensitive paper well, and to provide a mechanism for the rewinding while also providing a mechanism for rewinding photosensitive paper in a cartridge for photosensitive paper. An object of the present invention is to provide an image forming operation that does not impair interchangeability in any way.

[Structure of the Invention] (Means for Solving the Problems) The present invention stores a cartridge in which a photosensitive paper wound around a winding shaft is housed in a case in a cartridge storage section that is opened and closed by a lid member, The photosensitive paper is wound up by a winding shaft, and includes a sleeve fixed to the cartridge storage portion so as to face the winding shaft in the axial direction, and a sleeve provided within the sleeve and movable in the axial direction. a rotating shaft that engages and disengages from the winding shaft; and a day return mechanism that is provided in the cartridge storage section and rotates the rotating shaft in the direction of rewinding the photosensitive paper into the case of the cartridge. The feature H is that it comprises a mechanism and a linkage mechanism that moves the rotating shaft in the axial direction to engage and disengage from the winding shaft in response to closing and opening of the lid member.

(Function) The rotating shaft that engages and disengages from the winding shaft is rotationally driven in the direction of rewinding the photosensitive paper by the rewinding mechanism, so each rotating shaft must be kept engaged with the winding shaft. For example, the photosensitive paper can be rewound. When replacing a cartridge, it is necessary to remove the rotating shaft from the winding shaft in order to take out the used cartridge, and it is necessary to engage the winding shaft with the rotating shaft in order to set a new cartridge in the cartridge housing. However, by providing an interlocking mechanism, the engagement and disengagement is achieved by closing and opening the lid member, so the rotating shaft can be engaged and disengaged from the winding shaft with a simple operation of opening and closing the lid member. can be done. In this case, it is conceivable to engage and disengage the rotating shaft with the winding shaft based on the operation of another dedicated member, but in this case, the engagement of the rotating shaft with the winding shaft is independent of the opening/closing operation of the lid member.・Removal operations are required, and replacing the cartridge is time-consuming. However, in the means of the present invention, since the rotating shaft is engaged with and disengaged from the winding shaft based on the closing and opening of the lid member, the time and effort required for replacing the cartridge can be reduced, and the structure can be simplified.

(Large Embodiment) An embodiment of the present invention will be described below with reference to the drawings as applied to a photosensitive pressure-sensitive copying machine capable of making full-color copies.

First, in FIG. 6, a movable document table glass 2 and document table cover 3 are provided on the top surface of the main body 1 of the copying machine, and a desired document 4 is placed face down on the document table glass 2. set in the state.

A light source such as a halogen lamp 5 is disposed at the upper part of the main body 1, and this emits light in a line toward the document table glass 2. The light emitted from the halogen lamp 5 passes through the transparent document table glass 2 and is reflected by the document 4 placed thereon.

Therefore, exposure scanning of the original 4 is performed by moving the original platen glass 2. The light reflected from the original 4 passes through a filter 6 for adjusting the color tone of the copied image and enters a projection lens 7, and the direction of the light projected by this lens 7 is changed by a pair of reflection mirrors 8.9. , an image is formed on the microcapsule paper 11 located along the exposure stage 10. The reflecting mirrors 8 and 9 are mounted on a mirror mounting plate, and the optical path length and focus are adjusted by finely adjusting the mirror mounting position.

On the other hand, the microcapsule paper 11 is housed in a case 13 in a state where it is wound around a winding shaft 12, and such a cartridge 14 is taken out into a cartridge accommodating section 15 provided at the top of the main body 1. It is stored. This cartridge storage section 15 is opened and closed by a lid member 16. One end of the microcapsule paper 11 reaches one winding shaft via a large number of rollers 17a, 17b, 17c, a pressure phenomenon device 18, and a separating mechanism 17d. This one winding shaft is rotationally driven by a motor (not shown) during a copying operation to wind up the microcapsule paper 11. That is, cartridge 1
The microcapsule paper 11 coming out from the lower part of the paper 4 is guided by the feed roller 17a1 and the guide roller 17b and passes under the exposure table 10, and then is supplied to the pressure development device 18, and further passes through the pressure development device 18. The microcapsule paper 11 thus prepared is guided by the feed roller 17c1 separation mechanism 17d and the meandering adjustment roller 17e, and then wound onto one winding shaft. Note that the unexposed microcapsule paper 11 after leaving the cartridge 14 is maintained in an unexposed state by the light shielding cover. Furthermore, the conveyance speed of the microcapsule paper 11 is controlled to be constant and is made to match the moving speed of the document platen glass 2, so that the microcapsule paper 11 has a predetermined amount of the document when passing through the exposure table 10. Lines of latent images are sequentially formed.

A suction cup type paper feeding device 20 is installed below the pressure developing device 18, and this feeds the developing paper 22 stacked in a paper feeding cassette 21, which serves as a paper storage unit, one by one. The taken out color developer paper 22 is conveyed by a feed roller 23a and a pinch roller 23b, and is conveyed to a color developer paper roller 23c.

After the leading end is aligned by the resist gate 23d and the resist gate 23e, it is transported to the pressure developing device 18. In this way, the microcapsule paper 11 and the color developer paper 22 are supplied to the pressure developing device 18 in a state where they are in close contact with each other and are integrated.
The microcapsule surface of the microcapsule paper 11 on which the latent image is formed and the developer-coated surface of the color developer paper 22 are in contact with each other on the inside, and are sandwiched between the small diameter roller 18a and the backup roller 18b and pressure is applied. . This pressure destroys the unexposed microcapsules, and the color developer paper 2
An image is formed on 2.

After the microcapsule paper 11 and the color developer paper 22 that have come out of the pressure development device 18 are separated by a separation mechanism 17d, the color development of the color developer paper 22 is promoted by the heat roller 24a of the heat fixing device 24, and an image is formed. After that, the paper is discharged onto the paper discharge tray 25 by the paper discharge roller. The separated microcapsule paper 11 is rewound by a mechanism described later in order to return the unexposed portion that has passed through the exposure table 10 to the cartridge 14 side rather than the exposure table 10.

Now, in FIGS. 1 and 2, both ends of the winding shaft 12 of the cartridge 14 stored in the cartridge storage section 15 are exposed to the outside from the case 13,
On each end face is a figure 7 m12 as shown in Figure 3.
a is formed. A sleeve 26 is attached to one side wall portion 15a of the cartridge storage portion 15 so as to face the winding shaft 12 in the axial direction. A rotary shaft 27 is disposed within this sleeve 26 so as to be movable in the axial direction (in the directions of arrows A and B), and a figure 7-shaped protrusion 28 is formed at one end of the rotary shaft 27 to allow movement in the direction of arrow A. As a result, the protrusion 28 engages with the groove 12a of the winding shaft 12, and is removed by moving in the direction of arrow B.

The rotary shaft 27 is provided with an end plate 29 so as to be movable in the axial direction and rotate integrally with the rotary shaft 27, and between the end plate 29 and the end 26a of the sleeve 26. Felt 30 is arranged as a friction resistance member. Further, a compression coil spring 31 as a biasing member is provided around the rotating shaft 27, and this spring 31
A spring force is applied between one end of the rotating shaft 27 and the end plate 29, and the end plate 29 is pressed against the felt 30. A stopper 32 is fixed to the other end of the winding shaft 12 in the cartridge storage section 15 to prevent the winding shaft 12 from moving in the direction of arrow A. Therefore, the rotation shaft 27 is , is normally engaged with the winding shaft 12 by the spring 31.

The other end of the rotating shaft 27 is connected to the end 26 of the sleeve 26.
a and protrudes to the outside, and a gear 34 constituting a part of the rewinding mechanism 33 is attached to the protruding portion of the rotary shaft 27.
It is fitted so that it can move in the axial direction relative to the rotary shaft 27 and rotate integrally with the rotating shaft 27. This gear 34 is rotationally driven by a drive motor (not shown).

The rotating shaft 27 is moved in the axial direction by a linkage mechanism 35, and the linkage mechanism 35 will be described with reference to FIGS. 1 to 4. A cam plate 36 is provided on one side wall 15a of the cartridge accommodating portion 15, and this cam plate 36 is formed on the cam plate 36 and a guide pin 37 fixed to the one side wall 15a of the cartridge accommodating portion 15. By fitting into the guide elongated hole 38 and fitting between the three pins attached to the cam plate 36 and the elongated hole (not shown) formed in the one side wall portion 15a of the cartridge storage portion 15, arrows C and D are formed. It is provided so that it can be moved in the direction. And this cam plate 36
The three pins are connected to a pin 40 attached to the hinge plate 16a of the lid member 16 via a lever 4], so that when the lid member 16 is rotated in the direction of arrow E and opened, the cam plate is opened. 36 is moved in the direction of arrow C, and conversely, when the cover member 16 is rotated in the direction of arrow F and closed, the cam plate 36 is moved in the direction of arrow C. A cam portion 42 with an oblique step is formed at the lower edge of the cam plate 36 on the elongated hole 38 side.

An opening/closing lever 43 is attached to one side wall 15a of the cartridge storage portion 15 via an M44 member (not shown).
A roller 45 provided at one end of this opening/closing lever 43 comes into sliding contact with the cam part 42, and a contact part 46 formed at the other end
is adapted to come into contact with a contact plate 47 provided at the other end of the rotating shaft 27. Therefore, the opening/closing lever 43 is rotated in the directions of arrows G and H by the movement of the cam plate 36 in the directions of arrows C and D, respectively.

In the linking mechanism 35 having such a configuration, when the lid member 16 is closed, the cam play) 36. Opening/closing lever 43
The rotating shaft 27 is moved in the direction of arrow A through the winding shaft 12.
When the lid member 16 is engaged with the rotary shaft 27 and the lid member 16 is opened, the rotating shaft 27
is moved in the direction of arrow B and separated from the winding shaft 12.

Now, in the above configuration, when a copying operation is performed, the microcapsule paper 11 is pulled out at a constant speed and wound up by the winding shaft 19, as described above. At this time, the lid member 16 is closed, the winding shaft 12 is in engagement with the rotating shaft 27, and therefore the microcapsule paper 1
1 is pulled out, the winding shaft 12 rotates to the rotation shaft 27.
rotates with In this case, since the end plate 29 that rotates integrally with the rotating shaft 27 is pressed against the felt 30 by the spring 31, the rotation of the rotating shaft 27 and the winding shaft 12
Friction is added to the rotation of the microcapsule (11), which gives tension to the microcapsule (11).

During this copying operation, when the developer paper 22 is separated by the separation mechanism 17d after passing through the developing device 18, the winding by the winding shaft 19 is stopped, and the unexposed portion of the microcapsule paper 11 (the exposure table 10) is stopped. An operation is performed to return the unexposed portion that has passed through. That is,
The gear 34 is driven by a motor (not shown) of the return mechanism 33.
is rotated in the direction of arrow Z in FIG. 6 (the direction in which the microcapsule paper 11 is rewound), thereby rewinding the microcapsule paper 1. Note that the rewinding length of the microcapsule paper 11 is detected by an encoder (not shown), and the rewinding operation is stopped based on the detection.

On the other hand, when the microcapsule paper 11 is used up and the cartridge 14 is replaced with a new one, the lid member 16 is first opened. The linking mechanism 35 operates based on this opening operation, and thereby the rotating shaft 2
7 is moved in the direction of arrow B, and the rotating shaft 27 that was engaged with the winding shaft 12 is disengaged from the winding shaft 12. Therefore, the cartridge 14 can be taken out without any problem.

Then, with the lid member 16 in the open state, a new cartridge is stored in the cartridge storage portion 15, and the lid member 16 is closed. Based on this closing operation, the linking mechanism 35 operates, whereby the rotating shaft 27 is moved in the direction of arrow A and engages with the winding shaft of a new cartridge.

Note that this engagement of the rotating shaft 27 with the winding shaft is performed in the same manner when the cartridge is set for the first time.

During the subsequent copying operation, as described above, good friction is applied to the winding shaft when the microcapsule paper is pulled out, and in particular, the winding shaft is rotationally driven in the direction of arrow Z during rewinding.

According to this embodiment, the rotating shaft 27 is provided in the sleeve 26 so as to be able to engage with the winding shaft 12, and the rotating shaft 27 is set in the direction in which the microcapsule paper 11 is rewound by the unwinding mechanism 33. Since the microcapsule paper 11 is rotationally driven, the microcapsule paper 11 can be rewound, and the effective utilization rate of the microcapsule paper 11 can be increased. Furthermore, when replacing the cartridge 14, the rotating shaft 27 is removed from the winding shaft 12 of the used cartridge 14, and the winding shaft of the new cartridge is rotated. dl
27, by providing the linking mechanism 35,
Since the lid member 16 can be attached and removed by closing and opening it, opening and closing the lid member 16 is easy! 1
The rotating shaft 27 can be engaged and disengaged from the winding shaft 12 with just one operation. In this case, it is conceivable that the rotating shaft 27 is attached to and detached from the winding shaft 12 based on the operation of another dedicated member, but this is done separately from the opening/closing operation of the lid member 16. Operations for engaging and disengaging the rotating shaft 27 are required, and replacing the cartridge 14 is time-consuming. However, according to this embodiment, the lid member 1
The rotation axis 2 relative to the winding axis 12 based on the closing/opening of 6
Since the cartridge 7 is engaged and disengaged, the effort required to replace the cartridge 12 can be reduced, and the structure can be simplified.

[Effects of the Invention] As is clear from the above description, the present invention is capable of rewinding photosensitive paper well, and is capable of rewinding a photosensitive paper cartridge even though it is provided with a mechanism for the rewinding. It is possible to engage and disengage the shaft and the rotating shaft extremely simply and easily, and the cartridge can be replaced easily.Furthermore, the lid member can be easily engaged and detached from the winding shaft and the rotating shaft. Since it is used, it has the excellent effect of simplifying the configuration.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIGS. 1 and 2 are longitudinal sectional front views of the main parts in the operating state, FIG. 3 is a view showing the end surface of the winding shaft, and FIGS. 5 is a side view of a linking mechanism portion in different operating states, FIG. 6 is a longitudinal sectional side view showing a schematic overall configuration, and FIG. 7 is a longitudinal sectional front view of a cartridge accommodating portion showing a conventional example. In the figure, 11 is microcapsule paper (photosensitive paper), 12 is a winding shaft, 13 is a case, 14 is a cartridge, 15 is a cartridge housing part, ]6 is a lid member, 19 is a winding shaft, 22 is a developer paper, 26 is a sleeve, 27 is a rotating shaft, 29 is an end plate,
30 is felt, 31 is a spring, 33 is a rewinding mechanism, 3
4 is a gear, and 35 is a linkage mechanism. Shrine Brother Brother Industries, Ltd.

Claims (1)

[Claims] 1. A cartridge consisting of a case containing photosensitive paper wound around a winding shaft is housed in a cartridge storage section that is opened and closed by a lid member, and the photosensitive paper is wound up by the winding shaft, A sleeve fixed to the cartridge storage portion so as to face the winding shaft in the axial direction, and a rotating shaft provided within the sleeve that engages and disengages from the winding shaft by moving in the axial direction. a rewinding mechanism that is provided in the cartridge storage section and rotates the rotary shaft in a direction to rewind the photosensitive paper into the case of the cartridge; An image forming apparatus comprising: a linking mechanism that is moved in an axial direction to engage and disengage from the winding shaft.