JPS6037540A - Method for instructing insertion of original to copying machine - Google Patents

Abstract

PURPOSE:To reduce the time for copying by outputting the signal announcing that the succeeding original of the same kind can be inserted into the copying machine of a photosensitive paper cassette is ready to deliver the succeeding photosensitive paper when the machine is put into an automatic printing state. CONSTITUTION:When a sensor 32 for detecting the insertion of an original turns on upon insertion of an original 38, the control state for automatic printing is started and a display device 42 for instructing the insertion of original is put out. Photosensitive paper is delivered in response with said putting out and a sensor 52 for detecting the fed paper starts operating. When the rear ends of the original and photosensitive paper pass respectively through detecting sensors 32, 52, both sensors 32, 52 turn off and the device 42 flickers to announce that the succeeding original can be inserted to the machine if said original is the same as the original just before the same. When the rear end of the original passes through a sensor 50 for completion of printing , the flickering state of the device 42 is changed to the normal lighting state to announce that the different original can be inserted to the machine. The time for copying is reduced in the above- mentioned way.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for instructing a copying machine to insert an original, and more particularly to a copying machine (for example, a diazo copy #l) which performs exposure printing by overlapping an original and photosensitive paper and has an automatic printing control function. This invention relates to a method for instructing insertion of a manuscript. The present invention is applicable to all copying machines equipped with an automatic printing control device that overlaps an original and photosensitive paper and performs exposure printing, but for convenience of explanation, a diazo copying machine will be used as an example. .

A diazo copying machine that measures the light transmittance of a rough original and automatically controls printing has been known for a long time.

In such a diazo copying machine, an original must be inserted under automatic printing control after the trailing edge of the previously inserted original has passed through the printing section of the copying machine. The reason for this is
This is because the set printing control state must be maintained constant during printing of the document inserted immediately before. Therefore, conventionally, the next document is not inserted until after the rear end of the previous document has passed through the printing section of the copying machine, thereby preventing printing defects.

However, with this conventional method, multiple sheets of the same original (
When copying original paper (with the same light transmittance) using automatic printing control, the rear edge of the previous original of the same type may be copied, even though there is no need to change the printing control depending on each original. Since the next original cannot be inserted until after it has passed through the printing section of the machine, there is a drawback that it takes a long time to copy.

Purpose of the Invention Therefore, the purpose of the present invention is to provide a copying machine that, when the copying machine enters the automatic printing mode, if the next document is of the same type, if the next sheet of photosensitive paper is ready to be fed from the photosensitive paper cassette. An object of the present invention is to provide a document insertion instruction method for a copying machine that notifies an operator that the next document may be inserted.

SUMMARY OF THE INVENTION The present invention provides a copying machine that exposes and prints an original and photosensitive paper in a stacked manner and has an automatic printing control function. The first signal is output until the document and the photosensitive paper pass through the printing section, and the second signal is output when the trailing edge of the document and the photosensitive paper passes the printing section, thereby ensuring that the next document sheet is the same as the previous document sheet. If so, the next original can be inserted into the copying machine according to the first signal, thereby reducing the usage time of the copying machine.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. FIG. 1 is a diagram showing the main parts of a diazo copying machine that measures the amount of transmitted light of a document and automatically controls the rotational speed of a motor that drives a conveyor belt in a printing section based on the measured amount of transmitted light.

In FIG. 1, 10 is an exposure light source, and 12 is a rotating cylinder glass (baked glass) having the exposure light source 10 inside. 14 is an endless conveyor belt,
The original document and the photosensitive paper are rotated in contact with the cylinder glass 12, and the stacked original and photosensitive paper are conveyed along the outer peripheral surface of the cylinder glass 12, during which time the photosensitive paper is exposed. 16 is a roller that drives or conveys the conveyor belt 14, and 18 is a separating case that separates the stacked originals and photosensitive paper.

One end of the optical fiber 20, which is a light guiding means, receives exposure light @
In order to take in the light from 10, cylinder glass 12
The other end is provided on the photosensor 34 side, which is a means for detecting the amount of light transmitted through the document. 40 is a table where the manuscript is placed.

36 is a document insertion roller, 32 is a document insertion detection sensor, 2
4 is a document conveyance roller; 22 is a printing section conveyance roller; 26 is a conveyance roller that feeds the photosensitive paper; 28 is a cassette that stores the photosensitive paper; 30 is a paper feed roller that feeds the photosensitive paper; 52 is a photosensitive paper feed detection sensor; 50 is a printing completion detection (or document trailing edge detection) sensor, 54 is a drive motor of the copying machine, and 38 is a document.

When the power switch of the copying machine is turned on, the exposure light source 10 lights up and the drive motor 54 starts rotating at a predetermined rotation speed. When the exposure light source IO reaches a steady state, the original 38 is inserted into the original insertion slot along the table 40.
The original is carried into the copying machine by an original insertion roller 36. The document 38 is connected to the document transmitted light amount detection unit (optical fiber 2
0 and a photo sensor 34) and reaches the document insertion detection sensor 32, it is detected that the document has been inserted. When the insertion of the original is detected, the amount of light transmitted through the original is detected by the original transmitted light detection circuit (not shown).
In addition, the photosensitive paper feed roller 30 operates to feed the photosensitive paper cassette 2.
The photosensitive paper is sent out from 8. The feeding of the photosensitive paper is detected by a photosensitive paper feed detection sensor 52.

Next, the original is transported by the original transport roller 24 and the photosensitive paper is transported by the transport roller 26. The original and the photosensitive paper are overlapped before the printing section transport roller 22, and the roller 22 prints the paper τ.
The first part is transported towards. Before the leading edge of the document reaches the printing section, the rotation speed of the drive motor 54 is controlled according to the output of the above-described document transmitted light amount detection circuit (that is, the automatic printing control state is entered).

By the way, once the -μ automatic printing control state is entered, even if the next original is inserted, the set printing state must not be changed until the previous original has passed through the printing section. This is because if the conveyance speed of the original and photosensitive paper is changed while they are passing through the printing section, the density of the copies will not be uniform. Therefore, in order to cancel the automatic printing state, for example, a printing completion sensor 50 is provided at the position shown in FIG. I'm trying to clear the condition.

In conventional automatic printing control, before it is detected that the trailing edge of the previous original has passed through the printing section (i.e., the printing completion sensor 5
0), even when copying a plurality of originals with the same amount of transmitted light, it was necessary to wait for the detection signal from the printing completion sensor 50 before inserting the copy.

According to the present invention, the signal from the burn-in completion sensor 50 (second
In addition to this signal, another signal (first signal) is output when the next original can be inserted, so that originals with the same amount of transmitted light can be quickly copied.

One embodiment of the present invention will be described in more detail with reference to FIG.

In FIG. 2, a table 40 is a document table for feeding a document into a copying machine, and a document insertion instruction indicator (instruction lamp) 42 is embedded in this table 40, for example. First, if the copying machine is not in automatic printing control mode,
In addition, when the original insertion detection sensor 32 and the photosensitive paper feed detection sensor 52 are not in operation (off state), the original insertion instruction display 42 is turned on to indicate that the original can be inserted (i.e., output a second signal).

When a document is inserted into the copying machine and the document insertion detection sensor 32 is activated (turned on), the document insertion instruction display 42 is activated.
Turn off the light. Note that in response to the operation of the document insertion detection sensor 32, the photosensitive paper is fed out from the cassette, and the photosensitive paper feed detection sensor 52 is operated (turned on). When the original insertion detection sensor 32 operates, the automatic printing control state is entered as described above. The rear edge of the document is the document insertion detection sensor 32
When the trailing edge of the photosensitive paper passes through the photosensitive paper feed detection sensor 52, this sensor 32 is turned off. In this state, the document insertion instruction indicators 4 and 2 flash (first signal), and if the next document sheet is the same as the document sheet inserted into the copying machine immediately before, that document is inserted at this point. Inform the operator of the good news.

Note that the document insertion instruction display 42 may be made to blink in response to the off state of one of the sensors 32 and 52.

Eventually, when the trailing edge of the document passes the printing completion sensor 50, the blinking state of the document insertion instruction display 42 changes to the constantly lit state (
(second signal) to notify the operator that the automatic printing control state corresponding to the previous document has been cancelled. Therefore, it can be seen that it is possible to insert a document sheet different from the document sheet inserted immediately before.

It is convenient for the operator if, for example, an acoustic signal device 44 is provided outside the document insertion instruction display 42 so that an acoustic signal (third signal) sound is emitted at the same time as the second signal is generated.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, when the copying machine enters the automatic printing state, if the next photosensitive paper is ready to be fed from the photosensitive paper cassette, the next original (however, Since it is possible to notify the operator that it is OK to insert documents (if the originals are of the same type), this has the effect of significantly shortening the copying time.

Modifications/Changes to the Invention In the first explanation, the first and second signals are a blinking signal and a constant lighting signal of a display lamp, respectively, and the third signal is an acoustic signal, but the present invention is limited to this. For example, the first and second signals can be converted into acoustic signals (intermittent and continuous sounds) without being
In this case, the third signal may be a lighting signal. Furthermore, it goes without saying that the arrangement and shape of the document insertion instruction indicator 42, the position of the acoustic signal device 44, etc. are not limited to the above-described embodiments.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining the main parts of a copying machine related to the present invention, and FIG. 2 is a diagram for explaining one embodiment of the present invention. 32: Original insertion detection sensor 42: Original insertion instruction indicator 44: Acoustic signal 50: Burning completion detection sensor 52: Photosensitive paper feed detection sensor Patent applicant Copia Co., Ltd. Agent Patent attorney Toshiaki Morisaki

Claims (7)

[Claims] (1) In a copying machine that exposes and prints the original and photosensitive paper in a stacked manner and has an automatic printing control function, after the original is inserted into the copying machine, the trailing edge of the original and the photosensitive paper is printed by the copying machine from a predetermined point. A method for instructing the insertion of a document in a copying machine, characterized in that a first signal is output until the document and the trailing edge of the photosensitive paper pass through the printing section, and a second signal is output when the trailing edge of the document and the photosensitive paper passes through the printing section. (2) A method for instructing a document insertion in a copying machine according to claim 1, characterized in that a third signal is output simultaneously with the output of the second signal. (3) The second signal is output when the first original can be inserted after the copying machine is powered on.
How to instruct a copying machine to insert a document as described in the section. (4) The first signal is generated when the next original can be inserted after the original is inserted into the copying machine.
A method for instructing a copying machine to insert a document according to any one of items 1 to 3. (5) The first signal is generated in response to at least one of the document insertion detection sensor and the photosensitive paper feed sensor being turned off after the document is inserted into the copying machine. A method for instructing a copying machine to insert a document according to any one of items 1 to 3. (6) The method for instructing document insertion in a copying machine according to claim 1, wherein the first signal is a blinking signal of a display lamp, and the second signal is a constant lighting of the display lamp. (7) A method for instructing a copying machine to insert a document according to claim 2, wherein the third signal is an acoustic signal.