JPH0375173A - Facsimile device - Google Patents

Abstract

PURPOSE:To achieve miniaturization and reduce cost of the facsimile device by a method where in one rotatable rubber roller, an image sensor capable of approaching or being separated to from the rubber roller while pinching a document, and a thermal head which can approach or be separated to from the rubber roller while pinching thermal paper are provided. CONSTITUTION:A document 2 moves above a reading section of an image sensor 3 following rotation of a rubber roller 1 in transmission mode. The image of a character, a graphic etc. on the document 2 is converted to an electric signal which is subjected to signal processing and transmitted. Further, a thermal paper 6 moves above a printing section of a thermal head 7 following rotation of the rubber roller 1 in a receiving mode, and a received image is printed on the thermal paper 6 based on a signal received from a remote station. In the copy mode, the document 2 moves above the writing section of the image sensor 3 following rotation of the rubber roller 1, and the thermal paper 6 moves above the printing section of the thermal head 7 following rotation of the rubber roller 1. Then, the image of the character, graphic, etc. which are read with the image sensor 3 is printed on the thermal paper 6.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a facsimile machine.

[Conventional technology]

FIG. 4 schematically shows the configuration of a conventional general facsimile machine. That is, the image sensor 3' is brought into close contact with the rubber roller 1° for driving the transmission original by a spring or the like (not shown) with the transmission original 2' sandwiched therebetween, and the rubber roller 1° is rotated by a motor or the like (not shown). As a result, the transmission document 2' is conveyed, and images such as characters and figures on the transmission document 2' are read line by line in the axial direction of the rubber roller l° and converted into electrical signals. In addition, the thermal head 6° is brought into close contact with the rubber roller 4° for driving the thermal paper with the thermal paper 5′ sandwiched between them by a spring or the like (not shown), and the rubber roller 4′ is rotated by a motor or the like (not shown). As a result, the thermal paper is conveyed 5 degrees, and thermal printing is performed one row at a time in the axial direction of the rubber roller 4 degrees.

[Problem to be solved by the invention]

As mentioned above, the conventional facsimile machine
The conveyance mechanism for the 5 degrees of thermal paper and the conveyance mechanism for the thermal paper at 5 degrees were independent, and the configuration required two rubber rollers of 1" and 4", which had the following drawbacks.

(2) A large space is required for the two rubber rollers 1° and 4° and their respective drive mechanisms (motor and reduction gear), making it impossible to downsize and reduce the cost of the facsimile machine.

■If there is a difference in the diameter of the rubber rollers 1" and 4" or uneven rotation, the copy mode (when the image sensor 3' reads the image of the original 2" to be sent, the thermal head 6
In a mode in which printing is performed on thermal paper at 5°), characters, figures, etc. may not be copied at the same size, resulting in rimming, resulting in a decrease in print quality.

The present invention has been proposed in view of the above points, and its purpose is to reduce the size and cost by reducing the number of rubber rollers to one, and to improve reliability in copy mode. An object of the present invention is to provide a facsimile device that can improve print quality.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a rotatable rubber roller, an image sensor that can approach and move away from the rubber roller by sandwiching a transmission document, and an image sensor that approaches and moves away from the rubber roller by sandwiching a thermal paper between them. It is equipped with a possible thermal head.

[Function] In the facsimile device of the present invention, the image sensor reads images such as characters and figures by sandwiching and contacting one rotatable rubber roller with the document to be sent, and the thermal Printing is performed by the heads coming into contact with the thermal paper in between.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of a facsimile apparatus according to the present invention, and schematically shows a cross-sectional structure viewed from a direction perpendicular to the conveying direction of a transmission document and thermal paper.

In FIG. 1, l represents a rubber roller, which is rotatable by a known drive mechanism (motor and reduction gear). On the other hand, numeral 3 denotes an image sensor that reads the image of the transmitted document 2 one row at a time in the axial direction of the rubber roller 1, and can be brought into contact with the rubber roller 1 with appropriate pressure by a spring 4 with the transmitted document 2 sandwiched therebetween. Further, 7 is a thermal head that heats and prints on the thermal vapor 6 one row at a time in the axial direction of the rubber roller 1.
They can be brought into contact with each other with appropriate pressure by the spring 8. Note that 5 is a chassis. In addition, in FIG. 1, the image sensor 3 and the thermal head 7 are configured to face each other below and above the rubber roller 1, but the arrangement is not limited to this, and in short, the image sensor 3 and the thermal head 7 are arranged to face each other with respect to one rubber roller 1. It is only necessary that the image sensor 3 and the thermal head 7 can be in contact with each other.

Furthermore, 9 is a switching mechanism for switching between three modes essential for a facsimile machine. In other words, as a facsimile machine, there are three modes: - transmission mode, reception mode, and copy mode. In the transmission mode, only the image sensor 3 works, in the reception mode, only the thermal head 7 works, and in the copy mode, the image sensor 3 works. Since both the thermal head and the thermal head 7 work, each mode is realized by separating the unnecessary side from the rubber roller l in each mode.

FIG. 2 shows a specific example of mechanically realizing the switching mechanism 9, which includes an image sensor 3 and a thermal head 7.
Tongue pieces 3a, 3b, ? at both ends of ? a.

7b, and the ends 91a, 92a of the press plates 91, 92, which are rotatable and fit around the rotating shaft 1a of the rubber roller 1, are attached to the tongue pieces 3a, 7a, 3b, 7 at both ends of the rubber roller 1.
Two press plates 91 and 92 are provided so as to be located between b.
are integrated with a connecting rod 93 so that they interlock, and the press plate 9
The mode is switched by changing the angle of the press plates 91 and 92 using a lever 91b provided at the press plate 91 and 92. That is, when the lever 91b is in position a, the end 91a of the pressing plate 91 (92) is connected to the image sensor 3 and the thermal head 7, as shown in FIG.
Tongue piece 3a, ? Since the image sensor 3 and the thermal head 7 are in a non-contact state with the rubber roller 1, the image sensor 3 and the thermal head 7 are pressed against the rubber roller 1 by the spring 4.8 (see FIG. 1), and both become operable and enter the copy mode. In addition, the lever 91b
When is in position b, as shown in FIG.
The thermal head 7 is separated from the rubber roller 1 by pressing a, and since the image sensor 3 is pressed against the rubber roller 1 by the spring 4, only the image sensor 3 becomes operable and enters the transmission mode.

Furthermore, when the lever 91b is in the C position, the position shown in FIG. 3 (C1
As shown in , the lower end of the end 91a of the pressing plate 91 presses the tongue piece 3a of the image sensor 3 to separate the image sensor 3 from the rubber roller 1, and the thermal head 7 is pressed against the rubber roller l by the spring 8. , only the thermal head 7 becomes operable and enters the reception mode.

Note that the switching mechanism 9 is not limited to the mechanical one shown in FIG. 2, but may also be configured as an electrical one using a plunger, for example.

The operation of the embodiment shown in FIG. 1 will be explained below.

First, in the transmission mode, the thermal head 7 is separated from the rubber roller l by the switching mechanism 9, and only the image sensor 3 is in contact with the rubber roller l, and as the rubber roller l rotates, the transmitted document is 2 moves over the reading section of the image sensor 3, and images such as characters and figures of the transmission document 2 are converted into electrical signals, subjected to signal processing, and transmitted.

In the reception mode, the image sensor 3 is separated from the rubber roller 1 by the switching mechanism 9, and only the thermal head 7 is in contact with the rubber roller 1, and as the rubber roller l rotates, the thermal paper is 6 moves over the printing section of the thermal head 7 and prints the received image on the thermal paper 6 based on the signal received from the other station.

In the copy mode, both the image sensor 3 and the thermal head 7 are in contact with the rubber roller l,
As the rubber roller l rotates, the transmitted original 2 moves over the reading section of the image sensor 3, and images such as characters and figures on the transmitted original 2 are converted into electrical signals.At the same time, as the rubber roller 1 rotates, thermal signals are transferred. The paper 6 moves over the printing part of the thermal head 7, and the characters read by the image sensor 3 are printed.
Images such as figures are printed on the thermal paper 6.

〔Effect of the invention〕

As explained above, the facsimile device of the present invention has the following advantages: ■Since only one rubber roller is required, only one set of drive mechanisms such as a motor and a reduction gear are required, and the facsimile device of the present invention requires two rubber rollers. Significant downsizing and cost reduction can be achieved compared to conventional methods.

■Since a single rubber roller reads the transmitted document and prints on the thermal paper, reliability is maintained in the copy mode, and defects due to uneven rotation do not occur, greatly improving print quality.

There are other effects.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the facsimile device of the present invention, FIGS. 2 and 3 are diagrams showing an example of the switching mechanism in FIG. 1, and FIG. 4 is a block diagram showing a conventional facsimile device. It is. ■・・・・・・・・・・・・Rubber roller 2...
・・・・・・・・・・・・Send manuscript 3・・・・・・・・・
・・・・・・Image sensor 4・・・・・・・・・・・・
・・・・・・Flash 5・・・・・・・・・・・・・・・Chassis 6・・・・・・・・・・・・Thermal paper 7・・・・・・・・・・・・・・・・・・Thermal head 8・
・・・・・・・・・・・・・・・Hane 9・・・・・・・・・
......Switching mechanism 91.92...Press plate 93...Connecting rod

Claims (1)

[Claims] one rotatable rubber roller; an image sensor that can approach and move away from the rubber roller while sandwiching a transmission document;
A facsimile device comprising: a thermal head that can approach and separate from the rubber roller by sandwiching thermal paper therebetween.