JPH04170152A - Original carrier for facsimile equipment - Google Patents

Abstract

PURPOSE:To surely prevent transmission of disturbed picture information by using an original size sensor so as to detect a state that an upper original guide is not locked. CONSTITUTION:The carrier is provided with an original size sensor 30 sensing the presence of an original carried along an upper face of a lower original size 11 and an original size sensor 40 able to detect an original of a prescribed size carried along a lower original guide 11 and able to sense it that an upper original guide 12 is in the state of lower original carrying. When the upper original guide 12 is not locked with respect to the lower original guide 11, the original size sensor 40 senses the state. That is, the original size sensor 40 is used to sense the unlock state of the upper original guide 12. Moreover, the size of the carried original is sensed based on the result of sense of the original size sensors 40,30. Thus, the state of the upper original guide is sensed with simple structure and the transmission of a disturbed picture is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a device for conveying a document having a transmission image for exposure scanning in a facsimile machine that converts an image of a document into an electrical signal and transmits the same.

(Prior Art) A facsimile machine that transmits an original image as an electrical signal and reproduces the image on the receiving side is usually provided with an upper part of the facsimile machine for exposing and scanning the transmitted image.

The document conveyance device includes a lower document guide and an upper document guide supported so as to be rotatable in the vertical direction relative to the lower document guide. The upper document guide is rotated downward relative to the lower document guide and is locked in a predetermined document conveyance state, and the document is conveyed between the two. and,
During the conveyance, the image of the document is exposed and scanned, and the image is read.

When the upper document guide is in a jammed state where the conveyed document is jammed between it and the lower document guide, it is rotated upward to the open state, and the jammed document between the two is removed.

The document conveyed along the lower document guide is conveyed with one side edge in the width direction orthogonal to the conveyance direction guided by a predetermined guide member. In order to detect the size of the conveyed document, two document sensors are arranged in parallel in the width direction perpendicular to the conveyance direction. Each sensor has a sensor arm that protrudes upward from the lower document guide. For example, when an A4 size document is conveyed, only the sensor arm of one document sensor contacts the document and rotates downward. the document sensor is turned on. When a B4 size document, which is larger than an A4 size document, is transported, the arms of both document sensors are rotated downward by the document, and each is turned on.

(Problem to be Solved by the Invention) In such a facsimile document conveying device, when a document jams, the upper document guide is rotated upward to the open state, and after the paper jam is cleared, the upper document guide is rotated downward. is rotated to At this time, there is a possibility that the upper document guide may not be in a predetermined locked state with respect to the lower document guide. Normally, the upper document guide is locked to the lower document guide on both sides, but the image is exposed with each side unlocked or with only one side locked. When a document is conveyed to be scanned, the document image cannot be transmitted normally, and a distorted image is received on the receiving side. Therefore, like this,
It is necessary to prevent the transmission of distorted images.

The present invention solves these problems, and its purpose is to provide a facsimile machine that can detect the state of the upper document guide with a simple structure by using a sensor for detecting the document size. An object of the present invention is to provide a document conveying device.

(Means for Solving the Problems) A facsimile document conveying device of the present invention is a facsimile document conveying device that conveys a document having a transmission image in a predetermined direction in order to expose and scan the document, the document conveying device comprising: a lower document guide on which is placed and moved along the upper surface thereof; an upper open state in which the document transport surface of the lower document guide is opened; and a lower document transport state in which the lower document guide is locked with respect to the lower document guide. an upper document guide rotatably provided with respect to the lower document guide so that the lower document guide has an upper document sensor that detects the presence of a document being conveyed along the upper surface of the lower document guide; a document size sensor capable of detecting a document of a predetermined size conveyed along the upper document guide and detecting that the upper document guide is in a downward document conveyance state;
The above object is thereby achieved.

(Function) In the facsimile document conveying device of the present invention, when the upper document guide becomes unlocked with respect to the lower document guide, the document size sensor detects this state. Further, based on the detection result of the document size sensor and the detection result of the document sensor, - the size of the document to be transported is also detected.

(Example) Examples of the present invention will be described below.

As shown in FIG. 2, the facsimile document conveying device of the present invention is disposed above a printing press 20 having various mechanisms built therein. As shown in FIGS. 1 and 2, the document conveyance device 10 includes a lower document guide 11 fixed on a chassis 20, and bolts connected to each side of the lower document guide 11 on the downstream side in the document conveyance direction. It has an upper document guide 12 rotatably supported at 13. An operation panel (not shown) having various operation buttons and the like is integrally attached to the upper side of the upper document guide 12 .

The upper document guide 12 is normally rotated downward, as shown by the two-dot chain line in FIG. It is designed to be locked to the side of the guide 11. Then, a document having a transmission image is placed on the lower document guide 11, and with its left side edge in contact with a predetermined guide member lie in the conveying direction, the document is placed on the lower document guide 11. upper document guide 1.
It passes between 2 and 2. During the conveyance, the image of the document is exposed and read.

When the original is jammed between the lower original guide 11 and the upper original guide 12, the upper original guide 12 is rotated upward as shown by the solid line in FIG. state.

A pair of paper feed rollers 14 and 14 are disposed at an appropriate interval in the width direction below the approximately central portion of the lower document guide 11 in the document transport direction. A portion of each paper feed roller 14 protrudes from the opening.

A conveyance roller 15 is disposed downstream of the paper feed roller 14 in the lower document guide 11 , and a conveyance roller 16 paired with the conveyance roller 15 is attached to the upper document guide 12 . Each transport roller 15 and 1
6 is in a state where a portion protrudes from each of the lower document guide 11 and the upper document guide 12, and when the upper document guide 12 is rotated to the lower document conveyance position, the re-conveyance rollers 15 and 16 are come into contact with each other. Furthermore, a conveyance roller 17 attached to the lower document guide 11 is also provided near the shaft support of the upper document guide 12 on the downstream side of each of the conveyance rollers 15 and 16 in the document conveyance direction.
and a conveyance roller 18 attached to the upper document guide 12. When the upper document guide 11 is fixed at the lower document conveyance position,
The re-conveyance rollers 17 and 18 are brought into contact with each other.

As shown in FIG. 2, a notch hole 11a is provided at a position near the center in the width direction of the lower document guide 11 and on the outside thereof.
and llb are provided respectively, and the notch hole 11
A sensor arm 31 of a document sensor 30 for detecting a document conveyed along the lower document guide protrudes from the notch a, and detects a document of a predetermined size conveyed on the lower document guide 11 from the other notch hole 11b. The sensor arm 41 of the document size sensor 40 protrudes.

The document size sensor 40 includes a sensor main body 42 disposed below the lower document guide 11, as shown in FIG.
The sensor arm 41 has one end rotatably attached to the sensor body 42.

The sensor body 42 utilizes a photoswitch 42a having a light emitting element and a light receiving element, and a light shielding plate 43 that can pass between the light emitting element and the light receiving element is connected to the sensor arm 41. .

The sensor arm 41 extends along the document conveyance direction, and is curved so that its center portion protrudes upward. The end of the sensor arm 41 located on the upstream side in the document conveyance direction is rotatably supported at a predetermined position of the sensor main body 42, and a light shielding plate 43 is integrated with the sensor arm 41 from the shaft support. It extends to the downstream side of the document. The sensor arm 41 has a curved portion that is connected to the lower document guide 1.
It is urged upward so as to protrude from the notch hole 11b of No. 1.

When the upper document guide 12 is rotated downward and the document is transported to a state where it is locked to the lower document guide 11, the sensor arm 41 of the document size sensor 40 moves toward the upper document guide as shown by the solid line in FIG. 12 and is rotated downward. When the upper document guide 12 is unlocked from the lower document guide II and rotated upward, it comes into contact with the upper document guide 12, as shown by the two-dot chain line in FIG. It is in a state where it is rotated further upwards. Furthermore, when the original is conveyed on the lower original guide 11, the sensor arm 41 contacts the original and moves further downward from the state where it contacts the upper original guide 12, as shown by the dashed line in FIG. Rotated.

A light shielding plate 43 that rotates together with the sensor arm 41
is a document conveying state in which the upper document guide 12 is rotated downward and locked to the lower document guide 11, and the sensor arm 41 is in contact with the upper document guide 12.
It is located between the light emitting element and the light receiving element of the photoswitch 42a, so that the light emitted from the light emitting element is not received by the light receiving element. In this embodiment, when the light receiving element of the photoswitch is in the light-blocking state, the photoswitch is set to be in the off state. Then, when the sensor arm 41 is in the open state where the upper document guide 12 is rotated upward, the light shielding plate 43 is removed from the photoswitch 42a, and the light emitting element is removed from the light shielding plate 43. The emitted light is received by the light receiving element and is turned on. Similarly, the sensor arm 41 is moved by the document conveyed along the lower document guide 11.
When the light-shielding plate 43 is rotated downward, the light-shielding plate 43 is removed from the photoswitch 42a, and the light emitted from the light-emitting element is received by the light-receiving element, thereby turning on the light-shielding plate 43.

The sensor arm 41 of the document size sensor 40 is moved along the guide member 11a of the upper document guide 11.
It is arranged so that it does not come into contact with a 4-size original, but contacts a 4-size original that is larger than an A4-sized original.

The document sensor 30 arranged in parallel with the document size sensor 40 is connected to the lower document guide 1 similarly to the document size sensor 40.
1 and a curved sensor arm 31 whose center portion protrudes from a notch hole 11a of the lower document guide 11. The sensor main body utilizes a photoswitch having a light emitting element and a light receiving element arranged opposite to each other, and one end of the sensor arm 31 is rotatably supported by the sensor main body. The sensor arm 31 has a curved portion that is connected to the lower document guide 1.
It is urged upward so that it protrudes by a predetermined amount from the notch hole 11a of No. 1. The upper document guide 12 rotatably supported with respect to the lower document guide 11 is provided with a notch hole 12a into which the sensor arm 31 of the document sensor 30 protruding from the notch hole 11a of the lower document guide 11 is fitted. There is.

The sensor arm 31 includes a
A light shielding plate that passes between the light emitting element and the light receiving element is provided so as to rotate in the same direction as the light emitting element and the light receiving element rotate. The sensor arm 31 of the document sensor 30 is attached to the upper document guide 12.
In the transport position where the upper document guide 1 is rotated downward, the upper document guide 1
It is urged upward so as to fit into the notch hole 12a of No. 2, and is rotated downward when it comes into contact with a document being conveyed in a predetermined state for image exposure scanning. The light shielding plate, which rotates together with the sensor arm 31, is located between the light emitting element and the light receiving element of the photoswitch when the sensor arm 31 projects upward from the lower document guide 11, and does not emit light. The light emitted from the element is not received by the light receiving element. In this embodiment, the photoswitch is set to be turned off when the light receiving element enters such a light-blocking state. When the sensor arm 31 is rotated downward by contact with the document, the light shielding plate is moved downward from between the light emitting element and the light receiving element of the photoswitch, and the photoswitch is turned on.

The sensor arm 31 of the document sensor 30 is configured to come into contact with an A4 size document that the sensor arm 41 of the document size sensor 40 described above does not contact.
It also comes into contact with a B4 size document, which is larger than the original size.

The outputs of the document sensor 30 and document size sensor 40 are as follows.
Each document sensor 30 is provided to a control unit (not shown).
And based on whether the document size sensor 40 is turned on or off,
The control section controls predetermined displays and the like on the operation panel disposed on the upper document guide 11.

The operation of the document conveying apparatus of the present invention having such a structure is as follows.

The upper document guide 12 is normally rotated downward and locked with respect to the lower document guide 11 in a predetermined conveyance state. In this state, the sensor arm 41 of the document size sensor 40 is in contact with the upper document guide 12 and rotated downward.
0 is in the off state.

Further, the document sensor 30 is also in an off state because no document is being conveyed. In such a state, the upper document guide 12 is in a predetermined document conveying state, so the control section displays on the operation panel that it is in a standby state.

In this state, the document containing the transmitted image is
Guided by one side edge by the lower document guide llc,
The paper is conveyed by the paper feed roller 14. At this time, the manuscript is A
4 size, the sensor arm 3 of the document sensor 30
1 contacts the original and rotates downward, but the original does not contact the sensor arm 41 of the original size sensor 40, so the original sensor 30 is turned on, and the original size sensor 40 is turned off. continue. In such a state, the control unit determines that the size of the document containing the transmitted image is A4, and determines that the image of the A4 size document will be transmitted.
Send to receiving side.

Furthermore, when the document is B4 size, which is larger than A4 size, the sensor arm 31 of the document sensor 30 and the sensor arm 41 of the document size sensor 40 come into contact with the conveyed document and rotate downward, and both sensors 30 and 4
0 is turned on. In this state, the control unit determines that the document containing the transmitted image is B4, and transfers the document to B4.
A message is sent to the receiving side that an image of a document of four sizes will be sent.

In this way, the document size is detected, and while the document is being conveyed along the lower document guide 11, the document is exposed and scanned, the document image is read, and the image signal is transmitted to the receiving side. be done.

In such a document conveying device, the lower document guide 11
If a paper jam occurs between the upper document guide 12 and the upper document guide 12, the upper document guide 12 is rotated upward and placed in an open state. In this state, the paper jam removal process is performed. In this case, the sensor arm 41 of the document size sensor 40 is rotated upward as the upper document guide 12 is rotated upward, and the document size sensor 40 is turned on.

In this case, the document sensor 30 is in an off state because the document is not being conveyed on the lower document guide ll. In this way, when the document sensor 30 is in the OFF state and the document size sensor 40 is in the ON state, the control section determines that the upper document guide 11 is in the open state where it has been rotated upward, and displays the information on the operation panel. Display alarm.

After the original paper jam has been cleared, the upper original guide 1
When the document size sensor 40 is turned off and the document size sensor 40 is turned off, the operation panel displays that the document is in a standby state. Ru.

At this time, if the upper document guide 12 is not locked with respect to the lower document guide, an alarm is displayed on the operation panel because the document size sensor 40 is not turned off. Therefore, if the upper document guide 12 is not in a predetermined locked state with respect to the lower document guide 11,
This is easily noticed by the operator, and it is possible to prevent the original image from being sent in a distorted manner.

Table 1 shows the on and off states of the document sensor 30 and document size sensor 40 for each state of the document conveyance device.

Table 1 (Effects of the Invention) The facsimile document conveyance device of the present invention has the following features:
By using the document size sensor, the unlocked state of the upper document guide can be easily detected with a very simple configuration, and transmission of distorted image information can be reliably prevented.

4. Important Notes ■ FIG. 1 is a longitudinal cross-sectional view of a facsimile document conveying device of the present invention, FIG. 2 is a perspective view thereof, and FIG. 3 is a side view of a document size sensor. -11...Lower document guide,
12... Upper document guide, 3°... Original sensor, 3
1...Sensor arm, 40...Document size sensor,
41... Sensor arm, 43... Light shielding plate.

that's all

Claims (1)

[Scope of Claims] 1. A facsimile document conveying device for conveying a document in a predetermined direction in order to expose and scan the document having a transmitted image, the document conveying device comprising: a device on which the document is placed and moved along its upper surface; a lower document guide that is connected to the lower document guide, and a lower document guide that is connected to the lower document guide so that the document conveyance surface of the lower document guide is in an upper open state, and a lower document conveyance state that is locked with respect to the lower document guide. an upper document guide rotatably provided; a document sensor that detects the presence of a document being conveyed along the upper surface of the lower document guide; and a document sensor that detects a document of a predetermined size being conveyed along the lower document guide. and a document size sensor capable of detecting that the upper document guide is in a downward document conveyance state.