JPH08147U - Fax machine - Google Patents

Abstract

In a conventional facsimile apparatus, a motor for conveying a document and a motor for conveying a recording sheet are separately provided, which results in cost increase and sufficient compactness. I couldn't. SOLUTION: A contact image sensor 7 for reading and a recording print head 21 are brought into contact with a peripheral wall of one driving roller 8 and an original document conveying system including the driving roller 8 and a recording paper conveying system. Were separated from each other.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a structure of a transmitter and a receiver of a facsimile machine.

[0002]

[Prior art]

 Generally, a facsimile apparatus has a configuration in which a transmitting section 30 and a receiving section 31 are provided as shown in FIG. 3, and these will be schematically described.

In the transmission unit 30, the transmission original D fed by the paper feed roller 32 is read by the light of the fluorescent lamp 33, enters the photoelectric conversion device 34, is converted into an electric signal, and is transmitted. Reference numerals 35 and 36 denote paper discharge rollers for discharging the document D. One paper discharge roller 36 and the paper feed roller 32 rotate counterclockwise (in the drawing) by the rotation drive of the first motor M1 via the endless belt 37. To do.

In the receiving unit 31, P is recording paper wound in a roll shape, 38 is a print head for printing the received image on the recording paper P, 39 is the recording paper P on the surface of the print head 38. The platen roller to be moved rotates in the clockwise direction (in the drawing) by the rotation drive of the second motor M2 via the endless belt 40.

[0005]

[Problems to be solved by the device]

 However, in the above-mentioned facsimile apparatus, two motors, that is, the first motor M1 and the second motor M2, are required to drive the transmission unit 30 and the reception unit 31, respectively. Further, separate paper discharge rollers 35 and 36 for discharging the document D and a platen roller 39 for feeding the recording paper P are required respectively.

Further, there has been a problem that space is lost due to downsizing of a facsimile device in recent years. The present invention has been made in consideration of the above circumstances.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is a facsimile apparatus including a contact image sensor for reading a transmission document, a print head for recording an image, and a drive roller for feeding a paper, the image sensor and the print head being The driving roller is provided so as to be in contact with each other on the peripheral wall of the driving roller, and the original feeding system and the recording paper feeding system are separated from each other.

[0008]

[Embodiment]

 A preferred embodiment of the facsimile apparatus of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a vertical sectional side view schematically showing a facsimile apparatus according to the present invention, and FIG. 2 is a schematic perspective view showing a main part. In FIG. 1, the upper side is the transmitting unit 1, and the lower side is the receiving unit 2.

In the transmission unit 1, 3 is an original placing plate provided in an inclined posture, and a paper feeding roller 4 and a separation pad 5 are arranged near the lower end of the placing plate 3 in a state of being pressed against each other. Is set. A document guide plate 6 is provided below the paper feed roller 4. A contact image sensor 7 and a drive roller 8 are arranged on the discharge side of the document guide plate 6 in a state in which they are constantly in pressure contact with each other.

A well-known image sensor is used as the contact image sensor 7 and has a length substantially the same as the length of the drive roller 8 in the axial direction. The LED light source 10 irradiates the surface of the document D at the reading position with the light, and the light reflected on the surface is condensed by the light guide lens 11 and is incident on the photoelectric conversion unit 12 to be converted into an electric signal. Sent. 13 is a glass plate.

The driving roller 8 is formed of a cylindrical rubber roller, and the shaft of the driving roller 8 is provided with a gear 14 so that the driving force from the motor M is transmitted through the endless belt 15 to positively drive the driving roller 8. It is like this. Further, another gear 16 is provided on the shaft of the drive roller 8, and an endless belt 18 is provided in an 8-shape between the gear 16 and the gear 17 provided on the shaft of the paper feed roller 4. The driving roller 4 is preferably a white roller so that the contact image sensor 7 does not affect the information such as characters on the original D when the original D is read.

The leading edge of the document D is drawn out from between the contact image sensor 7 and the driving roller 8 and is discharged to the outside of the machine through the document guide plate 20. In the receiver 2, P is a roll of recording paper, 21 is a print head (known thermal head) for printing the received image on the recording paper, and 22 is a support for the print head 21. This bracket is mounted so that it can turn around the shaft 23 as a fulcrum. The above-mentioned drive roller 8 is also used to slide the recording paper P on the surface of the print head 21.

Reference numeral 24 is a solenoid, the front end of the solenoid 24 is attached to the bracket 22, and the base end is fixed to the main body of the facsimile. When the solenoid 24 is turned off (FIG. 1), the print head 21 is pressed against the drive roller 8 to feed the recording paper P, and the solenoid 24 is turned on (arrow A in FIG. 1). Then, the print head 21 turns around the shaft 23 as a fulcrum and separates from the drive roller 8 so that the recording paper P is not fed.

Reference numerals 25 and 26 are cutters for cutting the recording paper P on which recording has been completed, 25 is a movable blade, and 26 is a fixed blade. A guide plate 27 for guiding the recording paper is provided so as not to cause a jam (paper jam) before the recording paper P is delivered.

The leading end of the roll-shaped recording paper P is drawn out from between the print head 21 and the driving roller 8, guided through the guide plates to the cutters 25 and 26, and discharged outside the machine. Therefore, in this embodiment, the driving roller for feeding the original in the transmitting section 1 and the driving roller for feeding the recording paper in the receiving section 2 are unified into one, and at the same time, one motor is provided, thereby making the apparatus compact, lightweight and low cost. Can be realized.

Next, the operation of the present invention will be described. The operation at the time of transmission is that when the document D is placed on the document placing plate 3, the print head 21 is separated from the driving roller 8 by first turning on the solenoid 24 in response to a transmission command from the operation panel 28. Prevent the recording paper P from being fed. When the drive shaft of the motor M is rotationally driven in the counterclockwise direction in FIG. 1, the driving force is transmitted through the endless belt 15 and the drive roller 8 rotates in the counterclockwise direction. The paper feed roller 4 rotates clockwise through the belt 18. A plurality of originals D placed on the original placing plate 3 are transported by the rotation of the paper feeding roller 4 in the clockwise direction, and only the lowest original is operated by the action of the paper feeding roller 4 and the separation pad 5. Are fed and fed to the document guide plate 6.

When the leading edge of the document D reaches between the contact image sensor 7 and the drive roller 8, the drive of the motor M is stopped, and handshake (communication preparation) is performed with the receiver of the other party during this period. Done. When the handshake ends, the motor M rotates counterclockwise again, and the rotation of the drive roller 8 starts the feeding of the document D. Further, the feed roller 4 is stopped by turning off an electromagnetic clutch (not shown) provided on the gear 17 of the feed roller 4, whereby feeding of the second document D is prevented, and Only the first original document is fed by the rotation of the driving roller 8, is read by the contact image sensor 7, and is then transmitted.

When the reading and transmission of the first original D is completed, the original D is discharged to the outside of the machine through the original guide plate 20. Then, the rotation of the motor M is transmitted by turning on the electromagnetic clutch provided on the sheet feeding roller 4, the sheet feeding roller 4 rotates in the clockwise direction, and the feeding of the second document D is started. , Reading and transmission are continued.

In the operation at the time of reception, a solenoid 24 is first turned off in response to a recording start command from the operation panel 28 to urge the print head 21 against the drive roller 8. Since the rotation of the paper feed roller 4 is stopped by turning off the electromagnetic clutch, the document D is not transported. When the drive shaft of the motor M is rotationally driven in the counterclockwise direction in FIG. 1, the driving force is transmitted through the endless belt 15, the drive roller 8 rotates in the counterclockwise direction, and the roll-shaped recording paper P is slightly moved. They are fed one by one. The print head 21 sequentially records on the recording paper P being fed. The printed recording paper P is guided to the cutters 25 and 26, and when recording is completed, the recording paper P is sandwiched between the movable blade 25 and the fixed blade 26, cut, and discharged to the outside of the machine.

The operation of copying the document D by this facsimile apparatus is such that when the document D is placed on the document placing plate 3, the solenoid 24 is first turned off by a copy command from the operation panel 28. As a result, the print head 21 is pressed against the drive roller 8 and the electromagnetic clutch of the paper feed roller 4 is turned on.

The drive shaft of the motor M rotates counterclockwise in FIG. 1, the drive roller 8 rotates counterclockwise through the endless belt 15, and further through the endless belt 18 provided in an 8-shape. The paper feed roller 4 rotates clockwise. By the action of the paper feed roller 4 and the separation pad 5, only the lowest document is fed out, and when the leading edge of the document D reaches between the contact image sensor 7 and the drive roller 8, the electromagnetic clutch is turned off. The rotation of the paper roller 4 is stopped, and the feeding of the second document is prevented.

When the contact image sensor 7 starts reading a document, the recording paper P is fed in synchronism with the rotation of the drive roller 8 and the print head 21 sequentially performs recording. Although the rotational speed of the drive roller 8 changes depending on the density of the information amount of the document D, both the paper feed of the document D and the paper feed of the recording paper P are sent in synchronization. In other words, there is an advantage that reading and recording are performed in synchronization, and a dedicated controller for synchronizing the paper feed is not required.

In this embodiment, the upper side of the facsimile apparatus is the transmitting unit 1 and the lower side is the receiving unit 2. However, the arrangement of the transmitting unit 1 and the receiving unit 2 is not limited to this embodiment. It suffices that the original feeding in the transmitting unit and the recording paper feeding in the receiving unit are performed by one driving roller, and the paper feeding is performed in synchronization with reading and recording.

[0024]

[Effect of device]

 As described in detail above, according to the present invention, the document feeding and the recording sheet feeding can be performed by the rotation of one driving roller, and the facsimile apparatus can be further downsized and reduced in weight. Further, in the present invention, the original feeding system and the recording paper feeding system are separated from each other while the original feeding and the recording paper feeding are performed by one driving roller, so that the original reading and the recording at the time of copying are performed. Simultaneous processing of can be performed.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view showing a preferred embodiment of a facsimile apparatus according to the present invention, FIG. 2 is a perspective view showing a main portion of FIG. 1, and FIG. 3 is a schematic vertical sectional view of a conventional facsimile apparatus.

[Explanation of symbols]

 1 ... Sending unit, 2 ... Receiving unit, 7 ... Contact image sensor, 8 ... Driving roller, 21 ... Print head, D ... Send original, P ... Roll recording paper.

Claims (3)

[Scope of utility model registration request] 1. An image sensor and a print head, comprising: a document transport system including a contact image sensor for reading a transmitted document; a recording paper transport system including a print head for recording an image; and a drive roller for feeding the paper. And a peripheral portion of the drive roller so as to abut against each other, and the original document transport system and the recording paper transport system are separated from each other. 2. A facsimile apparatus according to claim 1, wherein a paper feed roller is provided on the upstream side of the drive roller with respect to the original conveying system, and the paper feed roller and the drive roller are driven by the same motor. 3. The facsimile apparatus according to claim 1, wherein the peripheral surface of the drive roller is colored white.