JPH03194534A - Image forming device - Google Patents

Abstract

PURPOSE:To restore a mode to the latest mode when a cover is closed or when a power source is turned on and to surely form an image by holding an image forming condition in a storage means even when energization is stopped and readjusting the position of an optical system in accordance with the stored image forming condition when the power source is turned on. CONSTITUTION:When an operator sets the various modes of copying magnification and copying density, etc., to perform copying, a lens is moved to the position of the newly set magnification and the new magnification and the new copying density are displayed on a display device 44 and stored in the non- volatile storage device 41 by a controller 40. When the operator depresses a copying button, copying corresponding to each mode is performed. In the case that the operator closes the cover and turns on the power source so as to restart copying actions after turning off the power source and opening the cover to perform maintenance processing because of the occurrence of jamming, a copying machine is restored to a state before the power source is turned off based on the mode data stored in the storage device 41 and an operation for restoring the mode to an original mode need not be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus whose housing can be divided into at least two parts.

[Prior Art] Conventionally, image forming apparatuses are known in which the housing is separable for jam removal, maintenance, and the like. In such an image forming apparatus, the housing is divided and one maintenance cover is opened to clear the jam. Then, close the maintenance cover that was opened separately. However, in this series of operations, the position of the optical system placed on the side of the cover that has been split open may shift due to gravity or other factors. Therefore, when the cover is closed, the optical system is initialized and returned to a predetermined specific position (standard position).

In addition, there are some devices that open the maintenance cover without turning off the power, perform maintenance processing, and close the cover to return to the state before the cover was opened. However, even with such devices, when the cover is opened for maintenance, the operator often turns off the power because there is a risk of electric shock. Therefore, when the power is turned on after the cover is closed, an initialization operation is performed.

[Problem 8 to be solved by the invention] However, if the power is turned off when the maintenance cover is opened during maintenance and the housing of the image forming apparatus is divided into two parts, the optical system and the main body, as described above, When the power is turned on and restored after maintenance, it can only return to the initialized state. Therefore, if maintenance is performed due to a jam or the like during image formation, mode operations such as magnification and exposure lamp brightness must be performed again after maintenance in order to form images under the same conditions as before. Therefore, there is a problem in that the operations for the operator become complicated.

The present invention has been made to solve the above-mentioned problems, and by returning to the latest mode not only when the cover is closed but also when the power is turned on, it is possible for the operator to return to the latest mode after maintenance. It is an object of the present invention to provide an apparatus that can smoothly and reliably perform image formation without any trouble.

[Means for Solving the Problems] In order to achieve the above object, the present invention has a housing that is divided into two parts that can be opened and closed, and a movable optical system is provided on the movable side of the housing.
The apparatus for moving the optical system according to image forming conditions includes a storage means for storing the image forming conditions and retaining the stored contents even when the power is turned off, and a storage means for storing the stored contents even when the power is turned on. and adjustment means for readjusting the position of the optical system according to image forming conditions.

[Operation] In the present invention having the above configuration, when image forming conditions are specified, the optical system moves according to the conditions and stops at a predetermined position. In this state, image formation is performed according to a command. When the device is opened at the split portion after the power is turned off due to some accident or the like, the optical system moves in position due to gravity or other external force. However, when the power is turned on again after the dividing section is closed, the image forming conditions immediately before the accident are read out from the storage means, and the position of the optical system is readjusted according to the conditions.

Therefore, image formation can be resumed under the same conditions as before the accident.

[Example 1] Hereinafter, the photosensitive and pressure sensitive t which made full color copying possible according to the present invention will be described.
(An embodiment of the ear crosspiece will be described with reference to the drawings.

First, the overall configuration will be explained using FIGS. 1 and 2. A document 2 is placed on a document table glass 1, and a document presser 3 brings the document 2 into close contact with the document table glass 1 from above.

The light beam emitted from the lamp 4 is reflected and condensed by the flapper 5 and the reflection mirror 6, and passes through the document platen glass 1 to the document 2.
is irradiated. The light reflected from the original 2 is transmitted to the first mirror 7.
, the optical path is bent by the second mirror 8 and the third mirror 9, and the light enters the lens 10, and then is reflected by the fourth mirror 11 and formed into an image on the imaging surface 12 of the microcapsule paper 17.

Further, the lamp 4, reflector 5, reflection mirror 6, and first mirror 7 are held by a lamp holder 13.

Further, the second mirror 8 and the third mirror 9 are held by a mirror holder 16, and the lens 10, the fourth mirror 11,
The image plane 12 is held by an exposure table 19. These optical system components, except for the exposure table 19, are attached to the upper housing 29.

The long microcapsule paper 17 is attached to the cartridge shaft 2.
8, the cartridge 1 is removable from a lower housing 30 disposed at the lower part of the upper housing 29.
It is stored in 8. The tip reaches a winding shaft 26 via a number of rollers and a pressure developing device 24. That is, the microcapsule paper 17 discharged from the cartridge 18 is exposed on the exposure table 19 to form a latent image corresponding to the image of the original document 2. Then, the developer paper 23 fed from the developer paper cassette 20 via the paper guide 21 by the paper feeder 22 is overlapped with the developer paper 23, and synchronously, the pressure developer 2
Sent to 4.

The unexposed microcapsules are destroyed by the pressure generated within the pressure developing device 24, and an image is formed on the developer paper 23.

The microcapsule paper 17 discharged from the pressure developing device 24 is separated from the color developer paper 23 by a separating mechanism 25, changed direction upward, and is wound onto a winding shaft 26.

Further, the color developer paper 26 is attached to a heat fixing device 27 located on its path.
After color development is promoted and an image is formed, the paper is discharged onto the discharge tray 31 with the image side facing up.

The above-mentioned transport system, paper feeding system, pressure developing system, and heat fixing system are installed inside the lower housing 30. Upper housing 29 and lower housing 3
0 is connected by two hinges 32, and the upper housing 29 can rotate with respect to the lower housing 30 about a straight line connecting the two hinges 32. Further, on the upper surface of the lower housing 30, an upper housing 29 and a lower housing 30 are arranged.
A telescopic lid 33 is attached which connects the upper housing 29 and constantly pushes up the upper housing 29. Furthermore, a stopper 34 is arranged which engages with the hole 35 of the upper housing 29 and prevents the upper housing 29 from rotating around the rotation axis.

Next, the copying operation of the photosensitive pressure-sensitive copying machine configured as above will be explained.

When the copy button (not shown) is pressed after opening the document holder 3 and placing the document 2 on the document table glass 1, the lamp 4 is turned on and the lamp holder 13 and mirror holder 16 are pressed.
The movement of the image begins and copying is performed. After the light emitted from the lamp 4 is reflected by the original 2, the optical path is bent by the first mirror 7, the second mirror 8, and the third mirror 9, and the light is incident on the lens 10. Thereafter, it is reflected by the fourth mirror 11 and is imaged on the imaging surface 12 of the microcapsule paper 17.

As the lamp holder 13 moves, the developer paper 23 is taken out from the developer paper cassette 21 by the supply device 22.
It passes through a vapor guide 22 and is supplied to a pressure developing device 24 . Then, the two papers are overlapped and pressed, and the latent image on the microcapsule paper 17 is transferred onto the developer paper 23. Thereafter, the color developer paper 23 is thermally fixed by the thermal fixing device 27, and then
It is discharged onto the discharge tray 31. On the other hand, the pressure developing device 24
The microcapsule paper 17 that has passed through is sequentially moved to the winding shaft 2.
6. When the lamp holder 13 finishes moving by the specified original size, the copying of the original 2 is completed, the lamp 4 goes out, and returns to the initial position.

Next, we will explain how to lift the upper casing to clear a jam, etc., and return it to a state where copying operations are possible after the jam has been cleared by the operator, using Figures 3, 4, and 5. I will explain.

Normally, an operator sets various modes such as copy magnification and copy density to perform copying. When the operator presses the magnification selection key 42 to change the current magnification, the control device 4
0 moves the lens 30 to the position of the newly set magnification, displays the new magnification on the display device 44, and stores the magnification data in the contingency storage device 41. Similarly, when the copy density selection key 43 is pressed and the copy density changes, the control device 40 displays the new copy density on the display 4.
4, and the copy density data is stored in the storage device 41.

In this manner, when the various modes necessary for copying operations change, in addition to the accompanying processing, the mode data is stored in the storage device 41 each time. Therefore, the latest copy mode data is always stored in the storage device 41.

When the operator presses a copy button (not shown), a copy suitable for each mode is performed according to the above-described copying operation. If some kind of problem occurs at this time, such as a jam in the capsule paper, the operator turns off the power, opens the cover to separate the upper casing 29 from the lower casing 30, and performs maintenance such as clearing the jam. At this time, since the upper housing 29 is tilted, the position of the lens 10 is often shifted due to gravity. After the jam processing is completed, close the cover and turn on the power, or vice versa, turn on the power and then close the cover to restart the copying operation.

At this time, the control device 40 detects that the power is turned on or that the cover is closed by the cover sensor 16, reads the previously stored mode data from the storage device 41, displays the magnification and copy density according to this data, and moves by gravity. The lens drive motor is driven so that the lens 10 that may be stored is at the position of the read magnification data. Through such processing, the photosensitive and pressure sensitive copying machine can return to the state before the power was turned off, and can return to the mode previously set by the operator.

Next, the specific operation of the control device 40 will be explained with reference to the flowcharts of FIGS. 4(a) and 4(b).

When the power is turned on or the cover is closed, the control device 40 in FIG. 3 reads magnification data and copy density data from the storage device 41 (Sl), and stores the data in the LE.
The information is displayed on a display device 44 such as D (S2). Simultaneously with the display, the lens drive motor 15 and the like are excited to move the lens 10 to a position corresponding to the above data (S3). This operation sets the lens position to the mode, magnification, etc. immediately before the power is turned off or the cover is opened. Furthermore, even if the lens position is moved due to the cover being opened, it will return to its original position.

When the above processing is completed, magnification, copy density, polarization, and image formation are possible. At this time, a scan is performed by loop control in which the magnification polarization switch is monitored (S4), the copy density switch is monitored (S5), and the copy switch is monitored (S6). When the copy switch is pressed in this state, the loop-like control described above is exited from step 1, and an image is formed according to the image forming conditions such as the magnification and density. That is, at the same time as the power is turned off or the cover is closed, an image can be formed under the image forming conditions immediately before the power is turned off or the cover is opened. Furthermore, if the magnification change switch or the density change switch is pressed before the copy switch is pressed, the process branches to Yes in 54S5, and the new image forming conditions are displayed on the display device 44 (S4
1 or 551), lens movement (S42), etc. The newly set conditions are then stored in the storage device 41. Then, the process returns to the loop control L1 and waits for the copy switch to be pressed.

[Effects of the Invention] As is clear from the detailed description above, according to the present invention, data on various modes necessary for image formation are always stored in the storage device each time the mode etc. is changed. The stored data is read not only when the cover is closed, but also when the power is turned on, and the movable parts are moved to the mode of the read data, so image formation can be performed reliably. This improves usability since there is no need for the operator to perform the operation of returning to the original mode.

[Brief explanation of drawings]

1 to 4 show an embodiment embodying the present invention. FIG. 1 is an external perspective view of the embodiment when the housing is divided, and FIG. 2 is a central cross-sectional view of the device. FIG. 3 is a flowchart showing the flow of FIG. 4(a). In the figure, 4 is an exposure light source, 10 is an imaging lens, 17 is a photosensitive recording medium, 40 is a control device, and 41 is a storage device. Figure 1 Figure 2

Claims (1)

[Claims] 1. In an apparatus in which a housing is divided into two parts to open and close, a movable optical system is provided on the movable side, and the optical system is moved according to image forming conditions, the image forming conditions are memorized and the energization is stopped. an image forming apparatus comprising: a storage means for retaining the stored contents even when the image forming apparatus is turned on; and an adjustment means for readjusting the position of the optical system according to the image forming conditions stored in the storage means when the power is turned on. Forming device.