JPH0362777A - Reader for facsimile equipment - Google Patents

Abstract

PURPOSE:To absorb even distortion or deformation in a support member by providing a support member with an optical unit mounted thereto and a mount member mounting the optical unit to the support member at least at 3 positions near the center of the optical path of the optical unit. CONSTITUTION:A mount member 52 is provided to an outer side face of an optical box 23. The mount member 52 consists of a boss 52a formed with a thread hole and a screw 52b penetrating through the boss 52a and screwed to the support member 51, and the boss 52a is somewhat prolonged upward from the upper face of the optical box 23. The mount parts 52 are provided to be mounted near the center of the optical path of the optical box 23, two at a head 23a of the optical box 23 and one at the side face of a skirt 23b, and each mount member 52 acts like mounting the optical unit 20 to the support member 51 while keeping the interval with the support member 51 by the screwing of the thread 52b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a reading device for a facsimile machine that reads image information using reflected light from a transmission document in order to transmit image information of the transmission document.

[Conventional technology]

Conventionally, facsimile reading devices have been configured to emit light from a light source onto a transmitted document, and to make the reflected light from the transmitted document enter a reading means such as a solid-state image sensor (CCD) to read the document image. Already used. In such a reading device, in order to break a predetermined optical path length,
When a molded body such as a mirror is provided, a shading plate, a lens, or a reading means is provided on the optical path of this reflector. In order to appropriately arrange these various optical components, conventionally, a synthetic resin molded body designed for arranging these components is shaped into a bottom shape, and the optical components described in "2" are attached to this molded body. Then, this molded body is fixed to a predetermined position such as a housing of a facsimile machine by adhesive or screwing.

[Invention or problem to be solved]

However, in conventional devices, the molded body is attached so as to be integrated with the supporting part such as the facsimile machine housing, so if the supporting part H becomes distorted or deforms over time, directly affects the molded body. Then, various optical components arranged inside the molded body are affected,
For example, inconveniences such as the optical axis being misaligned or the lens becoming out of focus necessitate readjustment.

The present invention has been made in consideration of the above circumstances, and it is an object of the present invention to provide a reading device for a facsimile machine in which optical components can be properly attached even if the support is distorted or deformed.

[Means to solve the problem]

The present invention provides an optical unit that forms an optical path for reflected light from a transmission document and is provided with a reading means for reading image information of the document using the reflected light; a support member to which this optical unit is attached; and the optical unit. It is characterized in that it is provided with attachment portions 41 for attaching the optical unit to the support member at at least three locations near the center of the optical path.

[Effect]

By providing the attachment part shrine near the center of the optical path of the optical unit with respect to the support part shrine, distortions, deformations, etc. of the support member are absorbed, and the optical unit is supported at an appropriate position with respect to the support member.

〔Example〕

Hereinafter, the present invention will be specifically explained with reference to the drawings.

FIG. 1 shows a facsimile machine to which the present invention is applied,
Prior to a detailed explanation of the present invention, the overall configuration of a facsimile machine will be explained with reference to FIG.

The facsimile apparatus has a lower chassis 1 and an upper chassis 2 provided on the lower chassis 1, and the lower chassis 1 and the upper chassis 2 constitute a housing. The upper frame 2 of the upper chassis is configured to rotate around a pivot 3, and the interior is opened by rotating in the upright direction as shown by the two-dot chain line.

Further, the upper frame 2 is locked so as not to rotate by engaging the hook pin 4 and the hook lever 5. In such a facsimile machine, a transmitting section for transmitting image information of a transmission document is provided in the lower chassis 1, and a receiving section for recording received information on recording paper is provided in the upper chassis 2.

The transmitter has a pair of upper and lower guide plates 6 that serve as a transmission path for the transmitted original.
, 7, a separating and feeding device 10 provided at an intermediate portion of this transmission path, a reading platen roller 8 provided at an end portion of the transmission path, and a reading platen roller 8 provided at an end portion of the transmission path, and a separation and feeding device 10 provided at an intermediate portion of this transmission path, and a reading platen roller 8 provided at an end portion of the transmission path, and The apparatus includes an optical unit i.20 that reads image information of a transmitted document using reflected light. Further, a document holding device 30 is arranged close to the platen roller 8 . The pair of upper and lower guide plates 6 and 7 have an opening at the left end serving as a paper feed port 9 for a transmission document, and the transmission document is pushed into the paper feed port 9 in a stacked state of one or more sheets.

Separation supply device] 0 is equipped with a separation roller 11 and a pad holder 12 biased by a spring force in the direction of the separation straw 11, and a separation pad 13 in contact with the roller surface of the separation roller 1 is provided on the upper surface of the pad holder 12. installed. The separation pad 13 is made of a rough material such as rubber or leather. This separation/supply device 10 separates transmission documents inserted into a paper feed port 9 in a stacked state by a separation roller 1 and a separation pad 13 and supplies them one by one to a platen roller 8. The platen roller 8 supplies the original to be sent from the separating and feeding device ] 0 to the reading position S, and a light source (not shown) is placed at the reading position S to direct light to the original to be sent.
It's shooting. The document holding device 30 presses the transmitted document against the platen roller 8 so that the transmitted document moves along the roller surface of the platen roller 8. This document holding device 30 holds a holding plate 31 and a leaf spring 32 that presses the holding plate 3 in the direction of the platen roller 8.The tip of the holding plate 31 is parallel to the axial direction of the platen roller 8. By connecting the tip end portion to the roller surface of the platen roller 8, the document to be sent is pressed against the roller surface of the platen roller 8.

The optical unit 20 receives the anti-JJ light irradiated onto the original to be transmitted at the reading position S, and reads the image information of the original by human input. This optical unit 20 includes an entrance window 21 through which reflected light from a transmission document enters, an optical box 23 formed so that an optical path 22 of the incident light communicates with each other, and a solid-state image sensor attached to the end of the optical path 22 of the optical box 23. (CCD) or other reading means 24. Also, on the back side of the entrance window 21, there is a mirror 1 of the transmitted original.
-An anti-shaving body such as a mirror that reflects one light beam in 22 directions of the optical path is arranged. Reference numeral 25 denotes a shave plate for shading correction provided at a predetermined portion of the optical path 22.

The receiving section provided inside the cover 2 includes a roll paper stocker 41 in which a recording roll paper for recording received information is installed, a printing platen roller 42 and a print head 43 provided on the exit side of the roll paper stocker 41. We are prepared. The print head 43 may be a thermal head for thermally transferring the received information onto recording paper, or some other type. Further, at the outlet extension j of the roll paper stocker 41, there is a curl removal lever 44 that elastically slides into contact with the recording paper pulled out from the roll state.
or are placed. Furthermore, an automatic cutter 45 for cutting the recording paper into a predetermined length is provided on the exit side of the print head platen roller 42 and is guided to a paper discharge port 46 . In such a receiving section, the recording paper pulled out from the roll paper stocker 41 by the rotation of the platen roller 42 is
After passing through the habit removal lever, the received information is recorded by being printed by the print head 43, and then,
The paper is cut by the auto cutter 45 and discharged from the paper slot 46.

Furthermore, at the bottom of the lower shear 1, there is a circuit board 4 on which an electronic circuit for controlling the entire facsimile machine is mounted.
7, and each part of the device including this circuit board 47 is coated with rTi.
, and a power supply device 48 for supplying power.

Next, an embodiment of the reading device of the present invention will be described with reference to FIGS. 2 to 4. The optical box 23 of the optical unit 20 is provided with the reading means 24 (see FIG. 3), a condensing lens, a reflector, etc., and forms an optical path to the reading means 24.
is mounted above the reading platen roller 8 and the light source 50 that irradiates light to the transmission document A. In these figures, the optical box 23 is attached to the head section 23a and a section that spreads out from the head section 23a. A reading means 24 and a condensing lens are arranged in the head part 23a, and a reflecting plate is arranged in the skirt part 23b.
The entrance window 21 (see FIG. 1) is formed.

This optical box 23 is attached to the lower surface of the upper surface plate of the lower chassis 1 of the facsimile machine, and the upper surface plate of the lower chassis 1 serves as a support member 51 that supports the optical unit 20. In order to remove the optical unit 20, a mounting portion 52 is provided on the outer surface of the optical box 23.

The mounting part 52 has a boss part 52a formed with a screw hole, and a screw 52 that passes through the boss part 52a and is screwed into the support member 51.
The boss portion 52a extends somewhat upwards from the top surface of the optical box 23. In this embodiment, two take-out members 52 are provided on the head portion 23a of the optical box 23 and one on the side surface of the skirt portion 23b so as to be provided closer to the center of the optical path of the optical box 23. By screwing the screw 52b, the first part 52 functions to take the optical unit 20 to the support part 51 while maintaining the distance from the support member 5. Although the optical box 23 is fixed to the support member 5, it is not susceptible to distortion or deformation of the support member 5. In other words,
The optical hook 23 and the support part 4A51 are separated, and the distortion z5 of the support part 51 affects only the fixed part of the optical box 23, the part 4A52, and this part is the center of the optical path. Because they are close together, they are less susceptible to distortion as a whole. As a result, anti-UJ from the sending MA
The optical unit 20 can be removed without shifting the optical axis of the optical path of the light or shifting the sunspot of the lens, improving the accuracy of τj and reading image information with good viscosity. I can do it.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible; for example, four or more mounting members 52 may be provided.

〔Effect of the invention〕

As explained above, the present invention has a structure in which an optical component for reading a document image using reflected light from a transmitted document is disposed in an optical unit, and this optical unit is attached to a support member at three locations near the center of its optical path. Even if there is distortion or deformation, the support system has the effect of absorbing these and allowing installation to be carried out without interfering with reading.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram of a facsimile machine to which the present invention is applied, and FIG. 2 is a plan view showing essential parts of an embodiment of the present invention.
FIG. 3 is a side view thereof, and FIG. 4 is a front view thereof. 1...Lower chassis, 2...Upper chassis, 3...Pivot, 4...Hook pin, 5...Hook lever 6...
・Guide plate, 7... Guide plate, 8... Platen roller, 9... Paper feeding port, ]0... Separation supply device, 11. Separation roller, 12... Hut holder 13... Separation pad , 20... light? )'' unit, 2]... entrance window,
22... Optical path,] 23... Optical box, 24... Reading means, 25... Shading board, 30... Original fA t'lle device,
3]...Easy plate, 32...Leaf spring, 5]...Support part, 52...Take; 1 part profit.

Claims (1)

[Scope of Claims] An optical unit that forms an optical path for reflected light from a transmission document and is provided with a reading means for reading image information of the document using the reflected light; a support member to which this optical unit is attached; A reading device for a facsimile machine, comprising: a mounting member for mounting the optical unit to a support member at at least three locations near the center of an optical path of the optical unit.