JPH03113957A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To constitute the facsimile equipment comparatively in compact and to adopt layout at which heat countermeasures for a control printed circuit board are easily taken by providing a read section and a control section to an upper part of a printer and supplying cooling air to the printer and the control section respectively in the horizontal direction. CONSTITUTION:A printer 2 is arranged on a lower chassis 1 and a read section 3 and a control section 4 are arranged on the printer 2. A power supply unit 26 and a diskette or the like as an external memory are accommodated in a rear space of a partition plate 9 at the rear side of the printer 2 and an exhaust 9a is opened to a wall face at the left side of the space and an exhaust fan 27 is provided to the exhaust 9a. The exhaust fan 27 exhausts heat dissipated from a fixing unit 16 of the printer 2 or ozone generated around a photosensing drum 23 to the outside of the equipment through the exhaust 9a. The exhaust path A of heat and ozone is directed nearly in the horizontal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a facsimile machine, and particularly to a facsimile machine using an electrostatic recording printer as a receiving recording device.

Electrostatic recording type printers are heavy, so if such a printer is used as a recording device on the receiving side, the layout of the facsimile machine requires that the printer be placed at the bottom and the reading optical system on the sending side placed above it. This is the configuration in which the system is placed.

However, in such a case, it is necessary to assemble many other parts such as many control boards and cooling fans into the facsimile machine, and if these are placed at the front and rear of the machine, the length in the front and back direction will be too long, and the control board and cooling fan will need to be installed. If all the boards are arranged at the bottom of the printer, the overall height of the facsimile machine increases, and it is difficult to take measures against the heat generated by the control board.

In view of these points, it is an object of the present invention to provide a facsimile machine that can be constructed relatively compactly as a whole and has a layout that facilitates heat countermeasures for the control board.

In the present invention, an electrostatic recording printer is disposed at the bottom as a recording device on the receiving side, a reading section that reads the transmitted document while conveying it, and a plurality of printers that control the transmission and reception functions of the facsimile machine are arranged at the top. The printer is characterized in that a control section on which a board is mounted is disposed, and a passage for cooling air directed horizontally is formed in both the printer and the control section.

■ According to the above configuration, the reading section and the control section are provided at the top of the printer, so the control section is placed at the bottom, the printer is assembled on top of it, and the reading section is placed on top of it. The height is lower than that of a configuration in which the control section is provided, and on the other hand, the front-to-back length is shorter than that of a configuration in which the control section is provided at the rear of the aircraft body.

Furthermore, since the cooling air is arranged to flow horizontally between the printer and the control section, it is possible to cool both the printer and the control section while being thermally insulated.

Figure 1 shows an external perspective view of the facsimile machine of the present invention,
FIG. 2 shows a front sectional view thereof.

A printer 2 is arranged on a lower chassis l, and a reading section 3 and a control section 4 are arranged above it. The outer surfaces of the lower chassis 1, printer 2, and reading section 3 are covered with a synthetic resin outer cover 10a, and the outer surface of the control section 4 is covered with another outer cover 10b.

The lower chassis 1 includes a dish-shaped chassis stand 5 and a chassis top plate 6 attached to cover the upper part of the chassis stand 5.
It consists of. A control board 7 for controlling the mechanical parts of the printer is provided in an internal space surrounded by the chassis base 5 and the chassis top plate 6. As shown in FIG. 3, support brackets 8 for supporting various mechanical parts of the printer 2 are provided on the front side of the chassis top plate 6, and a partition plate 9 is provided on the rear side.

The printer 2 includes a cassette mounting unit 11. Drum unit 12. Exposure unit I3. Developer unit 14
．． Transfer unit 15. It is an electrostatic recording type recording device consisting of a fixing unit 16, a support bracket 8 and a partition plate 9.
It is placed in the space between. The cassette loading unit 11 has a cassette 18 insertion/extraction opening provided in the side wall of a cylindrical casing 17, and inside the casing 17 there is a roller 19 that feeds out the transfer paper from the cassette 18 set through the insertion/extraction opening. Separation rollers 20 are provided to prevent double feeding. The transfer paper separated by the separation roller 20 is conveyed by the registration roller 21 in synchronization with the rotation of the photoconductor drum 22, the toner image is transferred from the photoconductor drum 22 by the transfer section 15, and then sent to the fixing section I6 where it is thermally fixed. After being processed, the paper is discharged onto a paper discharge tray 23 provided on the left side of the machine.

The drum unit 12 includes a photosensitive drum 22 and a cleaner 24.
and a charger (not shown) are integrally assembled. Therefore, a charger, an exposure section, a developer, and a cleaner are arranged in this order around the photosensitive drum 22, and printing is performed by electrostatic recording.

The exposure unit 13 is, for example, an LED in which LEDs are arranged in a row.
Consists of arrays. This unit is the control part 4
is provided on the lower surface of the housing case 25. still,
The developer unit 14 and the drum unit 12 are removable upward for replacement.

A power supply unit 26, a diskette (not shown) as an external memory, etc. are housed in the space behind the printer 2 and on the back side of the partition plate 9.
An exhaust port 9a is opened in the bent portion of the partition plate 9, and an exhaust fan 27 is provided at the exhaust port 9a. This exhaust fan 27 is for exhausting heat generated by the fixing unit 16 of the printer 2 and ozone generated around the photoreceptor drum 23 to the outside of the printer through the exhaust port 9a.

In order to enable the exhaust fan 27 on the back side of the partition plate 9 to exhaust the heat and ozone inside the printer 2, a part of the partition plate 9 is cut out as shown at 28 in FIG.
Heat and ozone inside the printer are led out to the exhaust fan 27 through this notch 28. Figure 3 shows the heat and ozone flow paths indicated by arrows. As can be seen from the figure, the flow path A is approximately horizontal.

The reading unit 3 separates the transmission originals placed on the original tray 30 installed on the right side of the machine one by one, and moves them to the reading position P.
It consists of a document conveying system 32 that feeds out the document after reading and discharges the document onto a paper discharge table 31 after being read, and an optical system 33 that reads the document located at the reading position P. As shown in detail in FIG. 7, the conveyance system 32 is assembled into a reading frame 53 which is assembled with front and rear side plates 51, 51 and a paper guide plate 52, and the optical system 33 is integrated into one unit and attached to the reading frame. It is stored in the internal space of 53. The front and rear side plates 5
1.51 is mounted on the casing 17 of the cassette mounting unit 11 of the printer. Further, on the front side plate 51, a drive pulley 54 is attached to the shaft of a drive motor (not shown).
, a driven pulley 55 connected to each roller shaft of the conveyance system 32.
, 55, etc. are provided. A belt 56 is wound between each pulley.

As shown in FIG. 4, the control section 4 is made up of a plurality of control boards 35 incorporating circuits for controlling transmission and reception of the facsimile machine, and a housing case 25 that houses them.

As shown in FIG. 5, the housing 25 is assembled from a bottom plate 36°, front and rear sides Fj, 37, 37, and a top plate 38, and has openings 25a and 25b on both left and right sides. Since the left opening 25a is located at the left end of the body, the control boards 35 can be inserted into and removed from the housing case 25 through the left opening with the exterior cover 10b removed. A motherboard support plate 3 is installed in the right side opening 25b of the housing case 25.
9 is provided upright from the bottom plate 36. A motherboard (not shown) is attached to the left main surface of the support 39. The motherboard is provided with a number of connectors for electrical connection with the control board 35, and when the control board 35... is inserted into the housing case 25, the connector pins provided at the tips of the control board vi, 35 are connected to the motherboard. (not shown) is connected to a connector on the motherboard side. In addition, in order to facilitate the work of inserting the control board 35 into the housing case 25 and connecting it to the motherboard side connector, a control board is installed on the inner surface of the left and right sides vi, 37° 37 of the housing as shown in FIG. A guide plate 37a that guides 35... is provided.

Two cooling fans 40 and 40 are provided on the bottom plate 36 on the right side of the motherboard support plate 39. The cooling air from the fans 40, 40 is introduced into the housing case 25 through the gap between the motherboard support plate 39 and the right opening 25b of the housing case 25, and cools each controller/L/7J=Fi35... and is discharged from the rear left opening 25b.

In order to efficiently guide the draft from the cooling fan 40.40 into the housing 25, the left and right side plates 37.37 of the housing are used.
The right side portions 37b, 37b of the cooling fan 40, 37b gradually widen in width and extend further to the right beyond the cooling fan 40.40. The cooling air flow path of the control unit 4 is indicated by arrow B in FIG. As can be seen from the figure, this cooling air flow path B is also substantially horizontal, similar to the flow path A within the printer 2. Since the printer 2 and the control section 4 are separated by the bottom plate 36, there is no fear that air flowing through the printer 2 will flow into the control section 4, and the control section 4 can be cooled that much more efficiently.

The bottom 'Fi 36 of the housing case 25 is mounted and fixed on two inverted-shaped arms 41, 41 which are rotatably provided on the left side of the lower chassis l by means of a hinge connection. Therefore, the control part 4 is connected to the inverted arm 41.41.
By swinging, it is possible to switch between a position in which the upper part of the printer 2 is covered (the state shown in FIG. 2) and a position in which the upper part of the printer 2 is opened.

When the control unit 4 covers the top of the printer 2, the housing bottom plate 36 also serves as the top cover of the printer 2. In addition, a lock lever 42 is provided at the right end of the housing front plate 37 as shown in FIG. 6 in order to lock the control unit 4 in the position covering the upper part of the printer 2. A locking member 43 that engages is provided on the front surface of the reading section 3.

The right half 10c of the outer cover 10b covering the control section 4 is inclined as shown in FIG. Therefore, the inclined portion bone is used as a tray for placing the transmitted original.

Since the right half 10c of the exterior cover 10b is inclined in this way, the intake of cooling air for cooling the control section 4 becomes the gap S between the lower end of the inclined section 10c and the reading section 30 (see Fig. 2). . However, at the paper output port C of the reading unit 3, air flows from the top to the bottom through the gap S, which causes the transmitted originals loaded on the paper output tray 10c to be sucked with a moderate suction force. The originals discharged from the reading section 3 are piled up in order from bottom to top, and pages of the originals are prevented from being replaced.

In FIG. 1, 61 is a discharge window provided in the exterior cover 10a to discharge heat and ozone generated within the printer 2;
Reference numeral 62 denotes an exhaust window provided in the exterior cover 10b to exhaust the cooling air inside the control section 4.

As explained above, the facsimile machine of the present invention has an electrostatic recording printer arranged at the bottom as a receiving side recording device, and a reading section above which reads the transmitted document while conveying it.
The printer is equipped with a control unit equipped with a plurality of boards that control the sending and receiving functions of the facsimile machine, and both the printer and the control unit are configured to have cooling air passages directed in the horizontal direction. Because of this, it is possible to have a compact structure without increasing the front and rear lengths, and it is possible to efficiently cool both the printer and the control section without thermally interfering with each other.

In addition, since the reading section and control section are placed on top of the printer, the printer can be assembled in order from the bottom to the top, which has the effect of simplifying the assembly process.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the overall appearance of the facsimile apparatus of the present invention, FIG. 2 is a front sectional view thereof, FIG. 3 is a perspective view of the printer section, and FIG. 4 is a perspective view of the control section. Figure 5 is a perspective view showing the control section; Figure 6 is a perspective view showing the control section;
The figure shows the supported state of the control section, and FIG. 7 is a perspective view showing the reading section. l...lower chassis, 2...printer, 3...reading section, 4...control section, 27...exhaust fan, 40...cooling fan, A, B...air flow path

Claims (1)

[Claims] (1) An electrostatic recording printer is placed at the bottom as a recording device on the receiving side, and at the top there is a reading unit that reads the sent document while conveying it, and a control unit that is equipped with multiple boards that control the sending and receiving functions of the facsimile machine. A facsimile machine, characterized in that a cooling air passage is formed in a horizontal direction in both the printer and the control unit.