JPS63189353A - Copying device - Google Patents

Abstract

PURPOSE:To simplify the loading work of the protruded paper into a storage box by opening a door opening the storage section of the machine glazed paper after reversing paper feed rollers to retreat the tip of the delivered paper. CONSTITUTION:A storage section to load a machine glazed paper storage box 5 is provided below a device main body 1, and a door 3 locked by a lock device 4 is fitted at an outlet/inlet. When this storage box 5 is loaded on the device main body 1 and the door 3 is closed, a controller rotates paper feed rollers 24 and feed rollers 29, and the tip of the machine glazed paper 22 is extracted end delivered to wait at the preset position. Next, to extract the storage box 5, when a door opening button on an operation panel is operated, the paper feed rollers 24 and feed rollers 29 are reversed, and the delivered machine glazed paper is retreated. Next, a current is momentarily fed to the lock device 4, and the door 3 is automatically opened.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to an apparatus for using roll paper as an image support (
(collectively referred to as copying devices).

[Prior Art] Generally, in a copying device that uses roll paper, the roll paper is placed in a storage box that can be loaded into and pulled out from the main body of the device. The paper is pulled out to a suitable length from the core by a paper feed roller disposed at the paper core, then cut to a predetermined length by a cutter, and then conveyed to the image transfer section of the apparatus to carry an image.

One of the problems with such devices is the length of time required to transport the paper from the core to the image transfer section, which is one of the determining factors in copying time. Several proposals have been made.

For example, Japanese Patent Application Laid-Open No. 53-68229 proposes a technique in which the leading edge of the paper is advanced to a predetermined position further forward than the cutting position and then held there, thereby shortening the paper conveyance time.

[Problems to be Solved by the Invention] This conventional technique has an excellent effect of shortening the paper conveyance time by 4'J, but on the other hand, it is difficult to use the roll paper storage box when inspecting the equipment or replacing the roll paper. When the paper is pulled out from the main body of the apparatus, the paper portion that has been forwarded is pulled out in a state where it extends considerably from the paper storage box. Therefore, when the storage box is loaded into the apparatus again after inspection, the excess rolled paper must be manually rewound, which is a cumbersome process. Additionally, when the storage box is pulled out, the portion of the paper that has eroded out comes into contact with other members such as rollers, causing impressions, wrinkles, or damage, rendering it useless as an image support. This was an example of the uneconomical nature of having to cut off parts and waste them.

[Means for Solving the Problem] In order to solve the problem of recording and recording reference points, the copying apparatus of the present invention is equipped with a paper feeder for pulling out the roll paper from the core, and a storage space in the main body of the apparatus. a roll paper storage box arranged to be loaded into and pulled out from the unit; a feed roller disposed within the apparatus main body for receiving the leading edge of the paper pulled out by the paper feed roller and forwarding the paper to a predetermined position; A door that can be opened and closed to open the storage section, and a door that can be locked and
When the door is opened, the paper feeding roller is reversed to pull back the leading edge of the paper. Release it and allow the door to open! It is characterized by:

[Function] According to the present invention, by such a means, the paper feed roller rotates in reverse before the door is opened, and the IC roll paper is advanced and pulled back to dissolve the excess paper, and then the paper feed roller is rotated in the reverse direction before the door is opened. The lock device is released and the door can be opened.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the external appearance of an example of a copying apparatus according to the present invention, and a storage section 2 for loading and covering a roll paper storage box 5 (shown in FIG. 3) is provided below the main body 1 of the apparatus. The rear of the main body of the device is open so as to enable loading or pulling out of storage boxes into the storage section 2, and a door 3 is provided with one side pivoted to the main body 1 of the device so that the opening can be opened and closed. It is being

A locking device 4 is provided to lock the free end side of the door 3 to the main body of the device when the door 3 is closed.

As shown in detail in FIG. 2, the locking device 4 includes a roller 7 rotatably provided on a support shaft 6 protruding from the inner surface of the door 3, and a roller 7 provided in the main body 1 of the device when the door 3 is closed. and a latch device 8 that engages with and retains the holder 7. The latch device 8 includes a latch 11 which is pivotally attached to the side plate 1a of the main body 1 at approximately the center and whose rear end is connected to the plunger of the electromagnetic solenoid 9. The wrap 11 slopes downward at its tip and forms a guide side 12 for guiding the II 7, and a recess 13 capable of accommodating the lower at the lower end of the guide side 12, and one end is connected to the side plate of the device body. Due to the action of a tension spring 14 fixed to member 1a and its other end fixed to member 11, it is constantly biased in the counterclockwise direction as viewed in FIG. As a result, when the door 3 is opened, the cover 17 advances while pushing up the wrap 11 clockwise as the door 3 is opened, and falls into the recess 13 where it is closed.

On the other hand, a door pushing device 16 is arranged below the locking device 4. The extrusion device 16 includes a guide member 17 fixed to the side plate 1a of the main body of the device, and a pin 18 supported by the guide member 17 so as to be slidable in a substantially horizontal direction and prevented from being pulled out.
and an annular 7 flange 19 of the pin 18 and a guide member 17.
Due to the action of the compression spring 21 disposed between the
As seen in the diagram, the pressure is biased to the left. On the other hand, an actuator 40 is fixed on the inner surface of the door 3 at a position where it can come into contact with the rear end surface of the pin 18. When i3 is closed, this actuator 40 pushes the pin 18 and moves it forward against the action of the spring 21. In this state, it is held by the locking device 4. When the locking device 4 releases the door in this way, the action of the spring 21 pushes the door 3 outward and opens the storage section.

The microswitch 2o is arranged to turn on and off in accordance with the movement of the pin 18 as the door 3 opens and closes. The output signal from the microswitch 20 is sent to the CPU,
The data is sent to a control unit 30 (FIG. 4) consisting of ROM and RAM.

FIG. 3 shows a paper feed section for roll paper. The roll paper storage box 5 consists of a casing with an open top, and is supported by suitable guide means such as a slide rail so that it can be slid horizontally relative to the main body 1 of the apparatus to be pulled out or loaded. In this example, there are two wooden rolls 22 of different sizes in the storage box 5.
．． 23 is rotatably housed, and above it is provided a paper feeding rack 24.25 for pinching each 1"-roll paper 22.23 from both sides and pulling it out as appropriate. []-Ra 24.25 is connected to the 11-Ra drive source located in the device body 1 when the storage box is loaded in the solid line position shown in the figure, and is designated according to the command sent from the control unit 30. The paper feed 1]-ra corresponding to the roll paper is selected and driven in the specified direction.

The roll paper 22 or 23 drawn out by either the paper feed roller 24 or 25 passes through a guide 2728 and is guided to two feed rollers consisting of a drive roller and a driven roller pair. A cutter 31 that cuts the roll paper into a predetermined length according to a cutting command from the control unit 30 is provided downstream of the feed [1-ra 29. The image transfer unit (not shown) is then transported to an image transfer unit (not shown).

In order to control paper conveyance, paper size sensors S1, S2 and retreat position sensors 1-83, S4 are installed on the guides 27 and 28.
is arranged, and a timing sensor S5 is arranged immediately before the main roller 32.

Next, the operation of the paper feed section and the door will be explained. As shown by broken lines in FIG. 3, when the storage box 5 in which roll paper 22, 23 is set is loaded into the main body 1 of the apparatus and the door 3 is closed, the microswitch 20 is turned on, and the control unit 30 controls the paper feed rollers. 24 and the feed roller 29 to feed the roll paper 2.
Pull out 2 and postpone it. When the timing sensor 85 detects the leading edge of the roll paper, the paper feed roller 24 and the feed roller 29 stop, and the paper waits at that position. The size sensor 81 then detects the paper size of the J-rule paper 22, and displays the size on the display section of the control panel of the main body of the apparatus via the control section 30.

1-1-When printing on the paper 22, press the button for printing 1 in this state. As a result, the image forming section starts forming a desired image, and the paper feed roller 24, feed roller 29, and main roller 32 are driven to feed the paper at a predetermined timing of the operation of the image forming section, and this feeding is performed for a predetermined length. When this is done, the cutter 31 operates to cut the paper. The main roller 32 conveys the cut paper to the transfer section of the device a. The leading edge of the subsequent roll paper is pulled out in the same manner as described above and waits at the position of the timing sensor S5 for the next print.

The length of the paper drawn out can be detected, for example, by providing an encoder concentrically with the driven roller 29 of the feed roller 29.

On the other hand, when printing on the roll paper 23 is desired, the roll paper selection switch on the operation panel is switched.

In response to a command from the switch, the paper feed roller 24 and the rolled paper are pulled back until their leading edge is detected by the retreat position sensor S3. Next, the paper feed 1-]-clamp 25 and two feed rollers rotate forward, and the C-roll paper 23 is advanced to the timing sensor S5 and placed on standby in the same manner as described above.

If it is necessary to inspect the paper feed section or replace the paper, operate the door release button on the operation panel.

As a result, the paper feed roller 24 or 25 and the feed roller 29 rotate in the opposite direction, and the paper that has been fed forward is pulled back. When the trailing edge position sensor S3 or S4 detects the leading edge of the paper that has been pulled back, the control unit 30 stops the paper feed]-ra 24 or 25 with a slight delay. At this time, the leading edge of the paper is held in a state slightly protruding from the paper feed roller. Then, the electromagnetic solenoid 9 of the door cocking means 4 is instantaneously activated. As a result, the latch 11 is disengaged from the door 7, and the door 3 is automatically opened by the action of the pushing device 16.

When the microswitch 20 that was engaged with the pin 18 is turned off as a result of this release, the control section 30 controls the drive section of the paper feed section that the operator may touch, such as the cutter 31, to prevent danger. The operation of the feed [1-ra 29, paper feed rollers 24, 26, etc.] is prohibited.

The latch 11 has an integrated handle and protrudes to the outside, and when the device is powered off, the protruding handle 1 is operated to manually operate the latch f to open the door 3. be able to.

[Effects of the Invention] As described above, according to the present invention, the desired roll paper can be postponed and C
By avoiding waiting, it is possible to shorten the paper conveyance time, and when pulling out the roll paper storage box, the door is opened automatically after pulling the paper back to the specified position. This structure simplifies the work when reloading the storage box, such as rewinding the eaten paper, which was previously necessary, and also eliminates the wrinkles and folding of the paper that could occur when pulling out the storage box. ,
This has the advantage that paper can be used economically by eliminating the causes of damage and the like.

[Brief explanation of the drawing]

FIG. 1 is a view showing the external appearance of a copying apparatus according to the present invention, FIG. 2 is a side view showing the locking mechanism of the door of the apparatus shown in FIG. 1, and FIG. 3 is a view showing the paper feed section of the apparatus shown in FIG. The side view, FIG. 4, is a block diagram of the electrical controls of the apparatus of FIG. 1... Device body, 2... Storage section, 3... Door,
4...Lock device, 5...Storage box,
22.23... Roll paper, 24.25... Paper feed roller 29... Feed roller.

Claims (1)

[Claims] a roll paper storage box equipped with a paper feed roller for pulling out the roll paper from the core and arranged so as to be able to be loaded into and pulled out from the storage section of the apparatus main body; A feed roller that receives the leading edge of the drawn paper and advances it to a predetermined position, an openable/closable door that opens the storage section, and a locking device that locks the door and automatically releases the lock in response to an electric signal. 2. A copying apparatus comprising: upon opening the door, the paper feeding roller is reversed to pull back the leading edge of the paper, and then the locking means is released to enable the door to be opened.