KR970003379B1 - Facsimile apparatus and method - Google Patents

Abstract

A paper insertion sensing apparatus and method check whether a door is open or not by using an automatic paper-supply sensor. The paper insertion sensing apparatus mounts a sensor body(21') of an automatic paper-supply sensor(21) to a lower guide(24), mounts a sensor lever(22) to a upper guide(31) of a rotary door having a upper guide(31) and a panel(32), thereby the sensor lever(22) is inserted into a groove of the sensor body(21'). The paper insertion sensing apparatus removes a door opening sensor, and senses a door opening by using an automative paper-supply sensor.

Description

Facsimile Feed Sensor and Feed Control Method [Facsimile Feed Sensor and Feed Control Method]

1 to 3 are views of a conventional facsimile,

1 is a configuration diagram of a conventional facsimile transmitter.

2 is an exploded perspective view of a conventional automatic paper feed sensor.

3 (a) and 3 (b) are explanatory diagrams of the operation of the conventional automatic feed sensor.

4 to 6 is a diagram illustrating the configuration and operation of a facsimile transmission unit in which a paper feed detection device of the present invention is installed.

7 is a main configuration of the paper feed feed sensor according to the present invention.

8 is a flowchart of operation of the present invention.

* Explanation of symbols for main parts of the drawings

21: automatic feed sensor 22: lever

24: lower guide 31: upper guide

32: panel

The present invention relates to a paper feed detection device and a paper feed control method of a facsimile,

In particular, the present invention relates to a facsimile feed detection device and a feed control method capable of performing a function of checking the opening of a transmitter door by employing an automatic feed sensor.

As shown in FIG. 1, a conventional fax transmitter has an automatic paper feed sensor 1, an automatic paper feed roller 2, a door open detection sensor 3, an RPS sensor 4, a paper feed roller 5, The contact image sensor 6 and the eject roller 7 are installed on the hub guide 8 side, and the pinch roller 11, the read guide 12 and the automatic paper feed on the upper guide 9 and the panel 10 side. Rubber 13 is provided.

As described above, the upper guide 9 and the panel 10 are commonly referred to as a door, and the door is rotatably opened by a hinge 15 and coupled thereto.

The automatic paper feed sensor 1 is a sensor that detects when the document 14 enters, and the automatic paper feed roller 2 is brought into close contact with the automatic paper feeder 13, which is a friction member, to separate and feed the document 14 one by one. It serves to send up to the roller (5).

In addition, the door opening detecting sensor 3 is a kind of micro switch, and serves to sense the opening of the door while the lever is pressed by the protrusion 9a of the upper guide 9.

The lower guide 8 and the upper guide 9 form a paper feed path through which the document 14 is fed.

2 is a detailed view of a conventional automatic paper feed sensor 1. As shown in the drawing, the lever 1b is rotatably coupled to the sensor body 1a and is elastically supported by a spring 1c.

3 (a) and 3 (b) show an internal circuit configuration of a conventional automatic feed sensor 1, which is composed of a light emitting element 1 'and a light receiving element 1 ", and (a) is in an on state, (b) shows the off state by the lever 1b.

In the conventional facsimile as described above, when the document 14 touches the automatic paper feed sensor 1, the automatic paper feed roller 2, the paper feed roller 5 and the eject roller 7 rotate, and the original 14 Touching the RPS sensor 4 causes the central processing unit (CPU) to hold the read point of the document 14, and the document 14 is fed by the paper feed roller 5 at a constant speed. In this way, when the document 14 is fed, scanning is performed by the contact image sensor 6, and the sole guide 12 serves to keep the contact image sensor 6 in close contact so as to focus. Do it. In addition, the scanned document 14 is discharged by being bitten by the eject roller 7.

Then, in order to remove the jam (jam: inside) of the document 14 during use, if the door is opened counterclockwise around the hinge 15 in FIG. (3) is turned off, so that the central processing unit (CPU) recognizes the open state of the door.

The automatic feed sensor 1 is always in the on state when the document 14 is fed and scanned one by one. When the last document 14 exits the automatic feed roller 2, the original position is controlled by the lever 1b. As it returns to, it is turned off.

The conventional facsimile as described above is a factor of increasing the price by implementing the system by using the automatic feed sensor 1 and the door open detection sensor 3 separately in the transmission unit, the door open detection sensor 3 A separate mechanism for fixing is required, and a gap between the upper guide 9 and the door opening detection sensor 3 is difficult to find, making it difficult to find a detection position, and the upper guide 9 and the protrusion 9a. ) Hit the door opening detection sensor (3) by a drop test or an impact caused by dropping during use, causing a defect that causes malfunction.

The present invention is invented to solve the conventional defects as described above, when described in detail by the accompanying drawings as follows. As shown in Figs. 2 and 3, the facsimile transmitting unit according to the present invention includes an automatic paper feed sensor 21, an automatic paper feed roller 23, a paper feed roller 25, an RPS sensor 26, The contact image sensor 27 and the eject roller 28 are installed on the lower guide 24 side, and the pinch roller 29 and the read guide 30 on the door side including the upper guide 31 and the panel 32. Has an installed configuration.

34 shows the hinge.

4 shows a standby state, FIG. 5 shows a state in which the document 33 has been entered, and FIG. 6 shows a state in which the door is opened when necessary, such as when jam of the document 33 occurs.

FIG. 6 is an exploded perspective view of the automatic paper feed sensor 21. As shown therein, the shaft 22a is attached to the sensor body 21 'and the upper guide 31 fixed to the lower part of the lower guide 24. As shown in FIG. In this configuration, the lever 22 is rotatably installed.

In the state shown in FIG. 4, the lever 22 is inserted into the groove of the middle of the sensor body 21 'of the automatic paper feed sensor 21 by its own weight. As shown in FIG. 5, when the document 33 enters, It is pushed by the document 33 and separated from the groove of the sensor body 21 '.

8 is a flowchart illustrating an operation according to a paper feed sensing device and a paper feed control method of the maxi-mili according to the present invention.

As described above, the operation of the present invention can be roughly divided into two types. The first is when the user sets the original 33 as shown in FIG. 5 to send or copy, and the second when the door is opened as shown in FIG. 6 to remove jams caused by sending or copying. Performed by the sensor 21 and the lever 22.

Referring to FIG. 8, the CPU first checks the on / off state of the automatic paper feed sensor 21, and in this case, the standby state of FIG. 4 is maintained.

When the automatic paper feed sensor 21 is delivered to the CPU, the CPU 33 enters the document 33 as shown in FIG. 6 or whether the door is open or as shown in FIG. In order to determine whether the state is in the state of driving the motor for n seconds and n seconds after checking the state of the RPS sensor 26.

At this time, n seconds is set larger than the time that the automatic paper feed roller 23 can enter the RPS sensor 26 as a system configuration.

As described above, the state of the RPS sensor 26 is checked, and when the RPS sensor 26 is turned off, the document 33 is not present. Therefore, the door is opened and the buzzer sound is generated. When the RPS sensor 26 is checked on, the system operates normally.

As described above, the present invention eliminates the door opening detection sensor that has been separately installed in the transmitter transmission system configuration of the facsimile and serves as an automatic paper feed sensor, thereby contributing to the reduction of the product price and improving the assemblability. There is an advantage to improve the reliability of the product by eliminating the defects caused by external impact.

The present invention as described above can be applied to not only a facsimile but also a laser beam printer.

Claims (2)

The sensor body 21 ′ of the automatic paper feed sensor 21 is installed on the lower guide 24 side, and the sensor lever is attached to the upper guide 31 of the rotationally open / close door including the upper guide 31 and the panel 32. 22) The feed sensing device of the facsimile, characterized in that the lower end is rotatably installed so as to be inserted into the groove of the sensor body (21 ') by its own weight. Checking the on and off state of the automatic paper feed sensor 21 by the central processing unit to maintain the standby state if the off state, if the on state to drive the motor for n seconds, and then the state of the RPS sensor 26 When the check is off, the door is opened to recognize the state to generate a warning sound, if the RF sensor 26 is on, the system is configured to operate the system, characterized in that configured to operate the system.