JPS59192264A - Copying machine - Google Patents

Abstract

PURPOSE:To enable automatic control of copying through closing of a platen cover by installing a detector for detecting the closing of the platen cover on the side of a main body, and a detectability switching member for switching capability of detection of its closing on the side of the platen. CONSTITUTION:When a light shading plate 4 formed on a platen cover 2 is rotated to turn an arrow side down and to draw it out, an original is placed on a platen glass 1, and the cover 2 is closed, the light of a photointerruptor 3 is shaded with the plate 4. At that time, a signal produced from the photointerruptor 3 is converted into a print pulse signal via a differentiation circuit, etc., and fed to the control circuit of a copying device to start copying. At the end of copying, when the plate 4 is rotated to turn the arrow side upward, the light of the interruptor 3 is freed of an obstacle to disable copying. As a result, copying can be automatically controlled by closing the platen cover.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a copying machine that automatically enables copying by opening and closing a platen cover.

BACKGROUND ART Conventionally, when making a copy using a copying machine, it was necessary to set a document on a document table, close a platen cover, and operate a print button each time. Further, in the case of a document such as a book, the operator must press the print button while holding the platen cover with his/her hand, which causes the inconvenience of requiring the operator to use both hands. Furthermore, for multiple sheet originals, there are automatic document feeders that allow you to place the originals on the automatic document feeder and press the print button once to automatically feed the originals onto the document tray and make copies. It cannot be used for thick originals, and there is a limit to the range of originals that can be used.

Purpose of the Invention The present invention has been made in view of the above points, and provides the following features: 1-
The purpose of this is to ensure that the

Structure of the Invention In order to achieve the above object, the present invention provides an appropriate detector for detecting platen cover closure, such as a photointerrupter or a microswitch, on the main body of the copying machine. A suitable member to be detected, such as a light-shielding plate or an actuator, is provided, and the member to be detected is rotated so as to enable or disable the detection of the closing of the platen cover by the detector. Alternatively, when the platen cover is switched to be removable or foldable, and the platen cover is switched to be able to detect its closing, the copying operation is automatically started by the detection output generated by the detector when only one platen cover is closed. It was made so that it could be done.

Example Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 shows a first embodiment of the present invention, in which a light-shielding plate as a rotatable knob and a photointerrupter are used as the platen cover closure detection means.

In Fig. 1, (1) is the original platen, (2) is the platen cover, (3) is the photointerrupter built into the machine near the original platen (1), and (4) is the platen cover (2). A light shielding plate attached to the end of the light shielding plate (4)
is rotatably provided so that when the operator rotates it and closes the platen cover (2) with the arrow facing down as shown, the light from the photo ink converter (8) is blocked. ing. The signal from the first ink clubter (8) that is generated when the light path is blocked by the light shielding plate (4) is converted into a pulse signal through a differential circuit or the like, and this is sent to the control circuit of the copying machine. It's about to be given to you. In addition, in order to cope with the increase in the thickness of the platen cover <2+ ki originals, the hinge of the platen cover (2) is designed to move up and down to allow opening and closing. ) is also set to a size sufficient to operate the photointerrupter (3).

Next, to explain the operation of the above structure, rotate the light shielding plate (4) attached to the platen cover (2) so that the arrow is facing down and pull it out, and place the original on the original platen (
11 and close the platen cover (2), the light shielding plate (
4) blocks the light from the photointerrupter (3). The signal generated at this time from the photointerrupter (3) is converted into a print pulse signal through means such as a differentiating circuit, and is applied to the control circuit of the copying machine. In other words, opening and closing the platen cover (2) replaces pressing the conventional print button. When copying is complete, it is best to rotate the light shielding plate (4) so that the arrow is pointing upwards.By placing it in such a state, there will be nothing blocking the light from the photointerrupter (3), and copying will no longer be possible. It disappears.

In this way, you can automatically make copies by closing the platen cover (2) without having to press the print button, so you can easily make copies of books, etc. Moreover, by making the light shielding plate (4) rotatable, the closing of the platen cover (2) can be easily changed between a detectable state and a non-detectable state.

Figure 2 (A) shows an example in which the rotatable light shielding plate (4) is replaced with a removable light shielding plate (5), and Figure 2 (B) shows an example in which the rotatable light shielding plate (4) is replaced with a foldable light shielding plate (6). In both cases, in the same manner as described above, by attaching and detaching or folding them, the state in which the closing detection of the platen cover (2) is enabled and the state in which it is not possible is switched, and when the closing detection is possible, the platen cover (2)
) is closed, copying can be performed automatically according to the closing, and a copying machine that does not require a print button can be provided.
In such cases, the use of copying machines may be restricted as follows. That is, the removable light-shielding plate (5) is designed to be permanently installed in the copying machine, for example by placing metal on the back side and storing it near the machine operation part using a macnet or the like. Although it is desirable to do so, it is also possible to restrict copying by having a specific person carry such a light-shielding plate (5) so that those who do not have it are unable to make copies. It becomes.

In addition, on the valley side above, the first ink club (3)
The motion of the platen cover (hand) is detected optically using a sensor, but this can also be replaced with a magnetic sensor or the like.

FIG. 3 shows another embodiment of the present invention, in which the photointerrupter (3) and Q-shading plate (4) are replaced with a microswitch (7) and an actuator (8), and the actuator (8) is replaced with a microswitch (7) and an actuator (8). ) is removably closed. In the case of this embodiment as well, in order to cope with the increase in the thickness of the document (9), the actuator (8) should be made long enough to operate the micro switch (wa). good.

FIG. 4 shows yet another embodiment of the invention.

This embodiment is different from the above-mentioned valley embodiment in that it converts the signal generated during the operation of the photo ink clubter (3) and the microswitch (7) into a print pulse signal through means such as a differentiating circuit. On the other hand, it is possible to generate such a pulse signal mechanically. 1- That is, when the platen cover (2) is closed, the removable actuator 00) is connected to the button part (7) of the microswitch (7).
By sliding while pressing 7a), it finally comes off.
A signal is temporarily generated from the microswitch (7), and the microswitch (7) is configured not to operate when the platen cover (2) is opened.

Effects of the Invention As described above, the present invention allows copying to be performed automatically by closing the platen cover when it is possible to detect that the platen cover is closed. The operator can detect the closing of the platen cover by making effective use of the detection part provided on the platen cover side and making it switchable. The present invention has the advantage that it is possible to change the state between the state and the state where it is not, that is, even if the platen cover is closed, the detector does not operate and therefore no detection output is generated.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of a copying machine showing one embodiment of the present invention, FIG. 2 is a perspective view showing another example of the light shielding plate shown in FIG. 1, and FIG. 3 is a perspective view of another embodiment of the invention. A side view showing an example, and FIG. 4 is a configuration diagram showing another embodiment in the history of this invention. Code explanation (3)...Photo ink converter (4J (5)
1f61... Light shielding plate (7)... Micro switch

Claims (1)

[Claims] a detector provided on the main body of the copying machine for starting a copying operation based on a detection output generated when closing of the platen cover is detected; and a detector provided on the platen cover side corresponding to the detector; A copying machine characterized by comprising a detection member capable of switching between a state in which a detector can detect the closing of the platen cover and a state in which it cannot be detected.