JPH0362776A - Reader for facsimile equipment - Google Patents

Abstract

PURPOSE:To simply form a proper optical path by providing an optical path through which a reflected light from a transmission original is made incident in a read means reading picture information and a shading plate provided in the optical path and forming them integrally with a synthetic resin. CONSTITUTION:A reflecting boy 26 is fitted to an upper face of a lower chassis 1 of a facsimile equipment to form an optical path 22 through which a reflected light from a transmission original A is made incident in a read means 24 and a mount 23a to mount the reflecting body 26 is provided to the depth of an incident window 21 and a mount cylinder 23b to mount a lens 27 and the read means 24 is provided to the end of the optical path 22 and the entire optical box 23 including the mount 23a and the mount cylinder 23b is formed integrally with a synthetic resin. Moreover, a shading plate 25 applying shading correction is arranged at a proper position in the optical path 22 and the shading plate 25 is formed integrally with the optical box 23 by the synthetic resin.

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 a structure in which a light source emits light onto a transmitted document, and the reflected light from the transmitted document enters a reading device such as a solid-state image sensor (CCD) to read the document image. is used. In such a reading device, a reflector such as a reflector is provided to ensure a predetermined optical path length, and a condensing lens and reading means are provided on the optical path of the reflected light from this reflector. . A shading plate is also provided in the optical path to perform shading correction. Conventional reading devices are made by molding a synthetic resin molded body designed to provide a reflector, lens, or reading means, and then attaching the above-mentioned parts to this molded body (
= 1, and a metallic shading plate was attached to the optical path of the molded body using screws or the like.

[Invention or problem to be solved]

However, when attaching the shading plate to the synthetic resin molded body later, the installation error of the shading plate was large, requiring fine adjustment after removal. Attachment is troublesome and has poor workability.

The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a reading device that does not require attachment of a shading plate.

[Means to solve the problem]

The present invention provides a facsimile apparatus that reads and transmits image information using reflected light from a transmitted document fed to a reading position, in which an optical path is provided for the reflected light from the transmitted document to enter a reading means for reading the image information. and a shudding plate provided in the optical path, which are integrally molded from synthetic resin.

[Effect]

By integrally molding the optical path and the shading plate from synthetic resin, there is no need to attach a shading plate.

〔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 machine has a lower printer 1 and an upper printer 2 provided on 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/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/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 a 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 inserted into the paper feed port 9 in a stacked state of one or more sheets.

The separation supply device 10 includes a separation roller 11 and a separation roller 1]
a pad holder 12 biased by a spring force in the direction;
A separation pad 13 that contacts the roller surface of the separation roller 11 is attached to the upper surface of the pad holder 12. The separation pad 13 is made of a rough material such as rubber or leather.

This separating/feeding device 10 separates documents to be sent, which are stacked and pushed into a paper feed port 9, using a separating roller 11- and a separating pad 13, and supplies them one by one to a platen roller 8. The platen roller 8 supplies the original to be transmitted from the separation/supply device 10 to the reading position S, and a light source (not shown) is placed at the reading position S to irradiate the original to be transmitted. 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. The document holding device 30 includes a holding plate 31 and a leaf spring 32 that presses the holding plate 3 in the direction of the platen roller 8. The holding plate 31 extends so that its tip end is parallel to the axial direction of the platen roller 8, and by connecting this tip portion to the roller surface of the platen roller 8, it presses the transmitted original against the roller surface of the platen roller 8. ing.

The optical unit 20 receives reflected light from a transmission original at a reading position S, and reads image information of the transmission original using the incident reflected light. The first unit 20 includes an entrance window 21 into 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. Further, on the back side of the entrance window 21, there is disposed an anti-U body such as a mirror that reflects the reflected light from the transmitted document in the direction of the optical path 22. 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 4. It is equipped with As the print head 43, a thermal head for thermally transferring the received information onto recording paper, or some other type of head is used. Further, on the exit side of the roll paper stocker 41, there is a roll flaw removal lever 44 that externally slides into contact with the recording paper pulled out from the roll state.
is located. 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, whether the recording paper is pulled out from the roll paper stocker 4 by the rotation of the platen roller 42 or
After passing through the scratch removal lever, the received information is recorded by being printed by the rad 43, and then,
The paper is cut by the auto cutter 45 and discharged from the paper discharge port 46.

Furthermore, at the lower part 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 a power supply device 48 for supplying power to each part of the device including this circuit board 47 are installed.

FIG. 2 shows a cross-sectional view of the optical unit 20 for reading the transmission document A in the above facsimile machine. The optical unit 20 includes an optical box 23 in which an entrance window 21 is formed on the right side, and a reflector 26 disposed inside the optical box 23.
, a condensing lens 27, and a reading means 24. As shown in FIG. 1, this optical box is installed on the upper surface of the lower chassis 1 of the facsimile machine to form an optical path 22 for making the reflected light from the transmitted document A enter the reading means 24. and the entrance window 21
It has a mounting part 23a for mounting the reflector 26 on the back side, and a mounting tube 23b for mounting the lens 27 and the reading means 24 at the end of the optical path 22. The entire optical box 23 including the portion 23a1 and the mounting tube 23b is integrally molded from synthetic resin.

In addition, in the optical path 22 there is also an area for performing shading extraction.
A shading plate 25 is disposed at an appropriate position, and this shading plate 25 is integrally molded with the optical box 23 from synthetic resin.

With such a configuration, the reflector 26, the lens 27, and the reading means 24 can be accurately attached to the optical box 23, and the accuracy of the attachment is improved.

Furthermore, since the shading plate 25 is integrally molded with the optical box 23, it is not only possible to accurately place the shape ink plate 25 at a predetermined position, but also the work required to remove the shading plate 25 is reduced. No longer needed. Therefore, since an appropriate optical path can be obtained by using such light and the unit 1-20, it is possible to read the document information of the transmitted document A.

〔Effect of the invention〕

As explained above, in the present invention, since the optical path for making the reflected light of the transmitted document enter the reading means and the shading plate are integrally molded from synthetic resin, it is possible to easily form an appropriate optical path, and the shading plate is integrally molded with synthetic resin. The ding plate can be placed accurately at a predetermined position, and there is no need to attach it.

[Brief explanation of drawings]

FIG. 1 shows the entire facsimile machine to which the present invention is applied.
The i'+f diagram and FIG. 2 are cross-sectional views showing essential parts of an embodiment of the present invention. 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, 10 ... Separation supply device, ]1 ... Separation roller, 12 ... Pad holder 13 ... Separation pad, 20 ... Optical unit, 21 ... Person U, J window ,
22... optical path, 23... optical box, 24... reading means, 25... shading board, 26... fouling body,
27... Lens, 0 0... Original holding device, ]... Holding plate, 2... Leaf spring.

Claims (1)

[Scope of Claims] In a facsimile device that reads and transmits image information using reflected light from a transmission document fed to a reading position, the reflected light from the transmission document enters a reading means for reading the image information. 1. A reading device for a facsimile machine, comprising: an optical path; and a chucking plate provided in the optical path, which are integrally molded from synthetic resin.