JPH0686004A - Device for reading and recording picture - Google Patents

Abstract

(57) [Abstract] [Purpose] In an image reading / recording apparatus, the size of the apparatus and the cost of the reading / recording head are reduced. A read head 18 and a recording head 17 are attached to a common transparent glass substrate 4, and the read head 1
8 is arranged on the opposite side of the recording head 17 with the glass substrate 4 interposed therebetween. Further, the heating element 7 and the light receiving element 9 are arranged close to each other on the same side of the glass substrate 4, and the light receiving element 9 receives the reflected image from the original through the glass substrate 4 and receives it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading and recording head used in a facsimile machine and the like, and more particularly to an integrated reading and recording head.

[0002]

2. Description of the Related Art Conventionally, in information equipment such as a facsimile machine, a reading head and a recording head are attached to separate supporting members, and a predetermined driver board drives and controls a predetermined operation. Therefore, when the recording paper conveyance path and the original conveyance path are brought close to each other to reduce the size of the apparatus, the support members and substrates provided in the read head and the recording head become obstacles, and the conveyance path has a certain limit. It was impossible to get closer. Further, since each requires a dedicated driver board, it has been a cause of cost increase of the board and the driver IC.

Therefore, as disclosed in Japanese Patent Publication No. 62-17877, a reading head and a recording head are provided by arranging a light receiving element as a reading means and a thermal head as a recording means on the same substrate. An integrated type is proposed. As shown in FIG. 5, the integrated head is provided on the substrate 30 along the conveyance direction of the recording paper 31.
The thermal head 32 and the light receiving element 33 are provided,
When reading an image, the original 34 is read by the platen roller 3
The contact glass 36 is moved by 5 and the surface of the original 34 is illuminated in a slit shape by the illumination lamp 37, and the reflected light is passed through the convergent fiber array 38 to form an image on the light receiving element 33 for reading. Also,
When recording an image, the recording paper 31 is sent onto the thermal head 32 by the recording platen roller 39, and a pulse current is passed through the heating resistor according to the image information for recording.

[0004]

However, in the integrated reading and recording head having the above structure, the recording platen roller 39 is disposed adjacent to the converging fiber array 38 and the illumination lamp 37. In addition to the radial dimension of the platen roller 39, it was impossible to bring the light receiving element 33 and the thermal head 32 closer than the installation space of the array 38 and the illumination lamp 37. As a result, it is extremely difficult to design a mechanism that reduces the size of the device and secures an optimal transport path for recording paper and documents without paper jams, which has hindered the spread of the integrated head. Further, in the apparatus disclosed in the above publication, the recording paper 31 is conveyed between the convergent fiber array 38 and the light receiving element 33, so that the original 3 is conveyed by the conveyance of the recording paper 31.
4 cannot be read, and therefore, the copy mode for simultaneously reading and recording cannot be used. The present invention solves the above-mentioned problems,
Since the read head and the print head can be arranged on a common substrate, an optimum transportation path without recording paper or document paper jams can be secured, and the read head and the print head can be brought close to each other, and the further improvement of the apparatus can be achieved. An object of the present invention is to provide a reading / recording device that can be downsized.

[0005]

In order to achieve the above object, the present invention is a reading means for reading image information of an original by pressing a reading head against the original and causing a light receiving element to receive reflected light from the original. And an image reading / recording device including a recording unit that presses the recording head against a recording sheet to record an image, the reading head and the recording head are fixed to a common substrate having a light-transmissive portion. And the read head is arranged on the opposite side of the recording head with the substrate sandwiched therebetween, and the light receiving element is arranged on the same side as the recording head, the light receiving element being transparent to the substrate. The reflected image transmitted through the area is received.

[0006]

According to the above construction, the reading head and the recording head are arranged on both sides of the common substrate, so that the conveying path for the original and the recording paper can be made substantially linear, and the paper path can be freely moved. The degree goes up. Further, since the light receiving element for reading is arranged on the same side as the recording head, the circuit configuration can be achieved by the printed wiring on one side surface of the common substrate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic cross-sectional view of a read / record integrated head. An original table 2 made of transparent glass which forms a part of the conveyance path of the original 1 and a transparent glass substrate 4 which forms a part of the conveyance path of the recording paper 3 are mounted on an aluminum frame 5 in parallel with each other at a predetermined interval. The reading / recording head frame 6 is constituted by these. The transparent glass substrate 4 serves as a common substrate for the driver IC that drives the recording and reading heads, and the heating element 7 of the thermal head is arranged on the lower surface of the transparent glass substrate 4 to form the recording head 17. The recording platen roller 8 is arranged at a position facing the recording head 17,
As a result, the recording paper 3 is conveyed in the direction of arrow A.

A light receiving element 9 is disposed in close proximity to the transparent glass substrate 4 on the same side as the heating element 7, and the opposite side of the light receiving element 9 with the transparent glass substrate 4 in between, that is, in the reading / recording head frame 6. A light emitting diode 10 for illuminating the original and a SELFOC lens 11 for transmitting the reflected light of the original are arranged in the scanning direction, and a reading head 18 is constituted by these. Further, a reading platen roller 12 is arranged at a position facing the SELFOC lens 11 with the document table 2 sandwiched therebetween, whereby the document 1 is conveyed in the direction of arrow B. Then, the reflection image of the document 1 on the document table 2 is formed on the light receiving element 9 through the SELFOC lens 11, so that the document 1 can be read.

FIG. 2 shows an embodiment of a facsimile apparatus using the read / record integrated head constructed as described above. The document 1 placed on the document tray 13 is read / recorded by the conveyance roller 14a and integrated with the recording head 16.
Be transported to. In this integrated head 16, as shown in FIG. 1, the light emitting diode 10 irradiates the document 1 with a predetermined amount of light, and the reflected image is reflected by the SELFOC lens 1
1 forms an image on the light receiving element 9 arranged on the opposite side of the transparent glass substrate 4 and reads the image. On the other hand, the recording paper holder 15 in the apparatus accommodates the roll-shaped thermal recording paper 3, and the recording paper 3 is conveyed to the heating element 7 of the integrated head 16 by the conveyance roller 14b, and the heating element 7 A predetermined amount of heat is supplied to develop color, and an image is recorded.

As described above, since the arrangement interval between the heating element 7 and the light receiving element 9 arranged on the common transparent glass substrate 4 is limited only by the size of the driver IC, the heating element 7 and the light receiving element 9 are arranged. By arranging the elements as close to each other as possible, the miniaturization of the device can be achieved. Further, since the recording platen roller 8 and the reading platen roller 12 are arranged on both sides of the transparent glass substrate 4, the conveyance paths of the original 1 and the recording paper 3 are formed in a substantially linear shape as shown by arrows A and B. It is possible to achieve a very advantageous transport path for paper jams that can be formed and are problematic in this type of device. Further, since the heating element 7 and the light receiving element 9 are arranged on the same side of the common transparent glass substrate 4, the driver IC can be shared by using the same driver IC.
The manufacturing cost can be reduced by manufacturing the bonding and the printed wiring in a series of manufacturing processes.

Next, a driver IC for the heating element 7 and the light receiving element 9 will be described. As shown in FIG. 6A, the driver IC of the conventional read head includes a read head substrate 2
The read head 21, the gate 22 and the shift register 23 are arranged on the display unit 0, and a predetermined signal is sequentially output to the shift register 23.
, And the gate 22 was sequentially opened in the scanning direction of the original for reading. Also, the driver IC of the recording head is
As shown in FIG. 6B, the read head 25, the gate 26, and the shift register 23 are arranged on the recording head substrate 24, and after a predetermined signal is sequentially sent to the shift register 23, the gate 26 is opened at a time. It was open to record one line. Although these two control methods are slightly different,
Two shift registers 23 of exactly the same kind were used.

On the other hand, in the present invention, it is possible to print wiring from both one of the read head and the print head from one shift register. FIG. 3 shows a driver IC for the heating element 7 and the light receiving element 9 in this embodiment. A read head 18, a gate 22, a shift register 23, a gate 26, and a recording head 17 are arranged on the transparent glass substrate 4, and printed wiring is provided from one shift register 23 to both the reading head 18 and the recording head 17. There is. Then, in normal communication, as in the conventional case, either the read or print head uses the shift register 23 independently, and in the copy mode, one line is read and then one line is printed. By adopting such a control method, the shift register 23 is commonly used.

The present invention is not limited to the above embodiment, but various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the glass substrate 4 which is entirely transparent is used as the common supporting member, but as shown in FIG. 4, the reflected light from the original 1 is coupled to the light receiving element 9 by the SELFOC lens 11. The transparent glass 27 may be used only in the imaged portion, and the normal ceramic substrate 28 may be used in the other portions. The method of fixing the small glass 27 to the ceramic substrate 28 in this case includes press fitting and adhesion, but is not specified here. By limiting the use of the transparent glass substrate 4, which is considered to be disadvantageous in terms of cost, the cost can be reduced.

[0014]

As described above, according to the present invention, the arrangement interval between the recording head and the light receiving element arranged on the common substrate is limited only by the size of the respective driver ICs. By arranging the light receiving element and the light receiving element as close to each other as possible, the size of the device can be reduced. Further, since the recording head and the reading head are arranged on both sides of the substrate, the respective conveying paths can be formed in a substantially linear shape, and a very advantageous conveying path with respect to the paper jam is achieved. be able to. Further, since the recording head and the light receiving element are arranged on the same side of the common substrate, the cost of the driver IC can be reduced by commonly using the driver IC.
Manufacturing costs can also be reduced by manufacturing the bonding, printed wiring, etc. in a series of manufacturing steps.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a read / record integrated head according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a facsimile apparatus using the read / record integrated head according to the present embodiment.

FIG. 3 is a schematic diagram of a read / write head driver IC according to the present embodiment.

FIG. 4 is a schematic cross-sectional view of a read / record integrated head according to another embodiment.

FIG. 5 is a schematic cross-sectional view of a conventional read / record integrated head.

FIG. 6 is a schematic view of a conventional read / write head driver IC, in which (a) is a read head driver IC;
(B) shows a driver IC of the recording head.

[Explanation of reference numerals] 1 original 2 original table 3 recording paper 4 transparent glass substrate 7 heating element 9 light receiving element 10 light emitting diode 11 selfoc lens 17 recording head 18 reading head

Claims (1)

[Claims] 1. A reading unit that presses a reading head against an original document and causes a light receiving element to receive reflected light from the original document to read image information of the original document, and an image is recorded by pressing the recording head against the recording sheet. In an image reading / recording apparatus including a recording unit, the reading head and the recording head are fixed to a common substrate having a light transmissive portion, and the reading head is sandwiched between the substrates. The light receiving element is arranged on the same side as the recording head, and the light receiving element receives the reflected image transmitted through the light transmissive portion of the substrate. Characteristic image reading / recording device.