JP2828365B2 - Copier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine in which copy lamp leads and optical fiber lines are arranged in parallel.

[0002]

2. Description of the Related Art A reading unit, a copy lamp (Copy Lamp) lead line (CL lead line) and an optical fiber line of a conventional copying machine will be described with reference to FIGS. 6 (A) and 6 (B). I do.

The reading unit 40 includes a copy lamp 6,
Lamp unit 41, mirror 43, lens 44 and CC
The photoelectric conversion element 42 is supported by the D substrate 3, and an image of the document is read by scanning in the scanning direction shown in FIG. That is, the reflected light from the document exposed by the copy lamp 6 and the lamp unit 41 is projected onto the photoelectric conversion element 42 via the optical axis 5, the mirror 43, and the lens 44, and the image is read. The image read here is sent to the image processing unit and subjected to various processes, and then temporarily stored in the memory of the image processing unit. The image data in the memory is supplied to the printer unit in response to the output instruction. An image is formed on paper. In this copier,
The CL lead wire 1 and the optical fiber wire 4, which are routed from the reading unit 40 to the outside of the reading unit 40, have a width W of a certain degree or more below each line as a measure to prevent the lines from falling or falling.
(About 40 mm or more), that is, mylar (PET) 8 was held by the fixing member 7.

[0004]

SUMMARY OF THE INVENTION
Since the lead wire 1 and the optical fiber wire 4 are held on the mylar 8 by the fixing member 7, they have a disadvantage that they have poor appearance and cause an increase in cost.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a copying machine capable of reducing the production cost and preventing dripping or falling of a copy lamp lead wire and an optical fiber wire without using a holding material such as mylar. is there.

[0006]

According to the present invention, there is provided a reading unit, and a connecting member for arranging and holding in parallel a copy lamp lead wire and an optical fiber wire wired from the reading unit to the outside of the reading unit. It is characterized by having.

[0007]

A copy lamp lead wire and an optical fiber wire to be wired from the reading unit to the outside of the reading unit are arranged in parallel and held by a connecting member, so that each line can be connected when the reading unit scans and returns. It is possible to prevent falling and to prevent the copy lamp lead wire from dropping due to the elasticity of the optical fiber, and it is possible to reduce the cost because no mylar is used. This utilizes the property that the optical fiber is hardly deformed because the optical fiber is made of a plastic material.

[0008]

Embodiments of the present invention will be described with reference to the drawings. Here, a digital copying machine will be described as an example of the copying machine of the present invention.

FIG. 4 is a sectional view showing the entire structure of the digital copying machine.

As shown in FIG. 4, a copying machine 30 includes a scanner section 31, a laser printer section 32,
3 and a sorter 34 are provided.

The scanner section 31 includes a document table 35 made of transparent glass and an automatic document feeder (RDF) 36 for both sides.
And a reading unit, that is, a scanner unit 40
It is composed of

The multi-stage paper supply unit 40 includes a first cassette 5
1, a second cassette 52, a third cassette 53, and a fourth cassette 55 that can be added by selection.

In the multi-stage paper feed unit 33, the paper is fed one by one from the top of the paper stored in the cassette of each stage, and is conveyed to the laser printer unit 32.

The RDF 36 sets a plurality of originals at once, automatically feeds the originals one by one to the scanner unit 40, and scans one or both sides of the original according to the selection of the operator. The unit 40 is configured to be read.

The scanner unit 40 includes a lamp reflector assembly 41 for exposing the original, a plurality of reflection mirrors 43 for guiding a reflected light image from the original to a photoelectric conversion element (CCD) 42, and a reflected light image from the original. A lens 44 for forming an image on the CCD 42 is included.

The scanner unit 31 is configured to read a document image while the scanner unit 40 moves along the lower surface of the document table 35 when scanning a document placed on the document table 35. When the RDF 36 is used, the document image is read while the document is being conveyed while the scanner unit 40 is stopped at a predetermined position below the RDF 36.

Image data obtained by reading the original image by the scanner unit 40 is sent to an image processing unit (not shown), which will be described later, and after being subjected to various processes,
The image data is temporarily stored in the memory of the image processing unit, and the image data in the memory is supplied to the laser printer unit 32 in response to the output instruction to form an image on a sheet.

The laser printer unit 32 includes a manual document tray 45, a laser writing unit 46, and an electrophotographic processing unit 47 for forming an image.

The laser writing unit 46 includes a semiconductor laser for emitting laser light corresponding to image data from the memory, a polygon mirror for deflecting the laser light at an equal angular velocity,
It has an f-θ lens and the like that corrects the laser light deflected at a constant angular velocity so as to be deflected at a constant speed on the photosensitive drum 48 of the electrophotographic process unit 47.

The electrophotographic process section 47 has a charging unit, a developing unit, a transfer unit, a peeling unit, a cleaning unit, a static eliminator, and a fixing unit 49 arranged around a photosensitive drum 48 in a known manner. ing.

A transport path 50 is provided downstream of the fixing unit 49 in the transport direction of the paper on which an image is to be formed. The transport path 50 is connected to a transport path 57 leading to the sorter 34 and a multi-stage paper feed unit. It branches to a transport path 58 leading to 33.

The transport path 58 is branched in the multi-stage paper feed unit 33, and the reverse transport path 50 is used as a transport path after branching.
a and a double-sided / combined conveyance path 50b.

The reversing transport path 50a is a transport path for reversing the front and back of a sheet in a duplex copying mode for copying both sides of a document. The double-sided / combined transport path 50b transports a sheet from the reverse transport path 50a to the image forming position of the photosensitive drum 48 in the double-sided copy mode, or transfers an image of a different document or an image of a different color on one side of the sheet. This is a transport path for transporting the sheet to the image forming position of the photosensitive drum 48 without reversing the sheet in the single-sided composite copy mode for performing the composite copy to be formed.

The multi-stage paper feed unit 33 includes a common conveyance path 56, and the common conveyance path 56 includes the first cassette 51, the second
The paper from the cassette 52 and the third cassette 53 is carried out toward the electrophotographic processing section 47.

The common transport path 56 is connected to the electrophotographic processing section 47.
On the way to, it merges with the transport path 59 from the fourth cassette 55 and leads to the transport path 60.

The conveyance path 60 is a junction 62 with the double-sided / combined conveyance path 50b and the conveyance path 61 from the manual document tray 45.
And the photosensitive drum 48 of the electrophotographic process section 47
The image forming apparatus is configured so as to communicate with an image forming position between the image forming apparatus and the transfer device, and a junction 62 of these three transport paths is provided at a position close to the image forming position.

Therefore, in the laser writing unit 46 and the electrophotographic processing unit 47, the image data read from the above-mentioned memory is transferred to the laser writing unit 46.
The toner image is formed as an electrostatic latent image on the surface of the photosensitive drum 48 by scanning the laser beam by the laser beam, and the toner image visualized by the toner is formed on the sheet conveyed from the multi-stage paper feeding unit 33. It is electrostatically transferred and fixed on the surface. The sheet on which the image has been formed in this manner is sent from the fixing device 49 to the sorter 34 via the conveyance paths 50 and 57, or is conveyed to the reverse conveyance path 50a via the conveyance paths 50 and 58.

Next, the configuration and functions of the image processing section included in the copying machine 30 will be described.

FIG. 5 is a block diagram of the image processing section included in the copying machine 30 of FIG.

The image processing unit included in the copying machine 30
An image data input unit 70, an image processing unit 71, an image data output unit 72, a memory 73 including a RAM (random access memory), and a central processing unit (CPU) 74 are provided.

The image data input section 70 includes a CCD section 70a,
It includes a histogram processing unit 70b and an error diffusion processing unit 70c.

The image data input unit 70 is a CCD 42 shown in FIG.
Image data of the original read from
The image data is processed by the error diffusion method while taking a histogram as a binary digital amount, and is temporarily stored in the memory 73.

That is, in the CCD section 70a, after an analog electric signal corresponding to each pixel density of the image data is A / D-converted, MTF correction, black-and-white correction or gamma correction is performed and 256 gradations (8 ) Is output to the histogram processing unit 70b as a digital signal of (bit).

In the histogram processing section 70b, the digital signal output from the CCD section 70a is added for each of the 256 grayscale pixel densities to obtain density information (histogram data) and, if necessary, the obtained histogram. The data is sent to the CPU 74 and sent to the error diffusion processing section 70c as pixel data.

In the error diffusion processing section 70c, an error diffusion method which is a kind of pseudo halftone processing, that is, a method in which a binarization error is reflected in a binarization determination of an adjacent pixel, is performed by a CCD.
The digital signal of 8 bits / pixel output from the unit 70a is converted into 1 bit (binary), and a redistribution operation for faithfully reproducing the local area density in the document is performed.

The image processing section 71 includes multi-value processing sections 71a and 71
1b, a synthesis processing unit 71c, a density conversion processing unit 71d, a scaling processing unit 71e, an image processing unit 71f, an error diffusion processing unit 71g, and a compression processing unit 71h.

The image processing section 71 is a processing section for finally converting the input image data into the image data desired by the operator, and outputs the finally converted output image data to the memory 73. The processing is performed by this processing unit until the data is stored as data. However, the above-described processing units included in the image processing unit 71 function as needed, and may not function in some cases.

That is, in the multi-value processing sections 71a and 71b, the data binarized by the error diffusion processing section 70c is converted again into 256 gradations.

The synthesis processing section 71c selectively performs a logical operation for each pixel, that is, an operation of a logical sum, a logical product, or an exclusive logical sum. The data to be subjected to this operation are pixel data stored in the memory 73 and bit data from a pattern generator (PG).

The density conversion processing section 71d arbitrarily sets the relationship between the input density and the output density with respect to the 256-level data signal based on a predetermined tone conversion table.

The scaling unit 71e interpolates the input known data in accordance with the designated scaling factor, thereby obtaining pixel data (density value) for the target pixel after scaling. Then, after the sub-scan is scaled, the main scan is scaled.

In the image processing section 71f, various image processings are performed on the input pixel data, and information collection such as feature extraction can be performed.

The error diffusion processing section 71g performs the same processing as the error diffusion processing section 70c of the image data input section 70.

The compression processing section 71h compresses the binary data by encoding called run length. Also, image data
With regard to data compression, compression functions in the final processing loop when the final output image data is completed.

The image data output section 72 includes a restoration section 72a, a multi-value processing section 72b, an error diffusion processing section 72c, and a laser output section 72d.

The image data output section 72 restores the image data stored in the memory 73 in a compressed state, and
It is configured to convert again to 56 gradations, perform error diffusion of quaternary data that provides a smoother halftone representation than binary data, and transfer the data to the laser output unit 72d. I have.

Immediately, in the decompression unit 72a, the compression processing unit 71h
Thus, the compressed image data is restored. In the multi-value processing section 72b, the multi-value processing section 71a of the image processing section 71
And 71b. Error diffusion processing unit 7
2c, the error diffusion processing unit 70 of the image data processing unit 70
Processing similar to c is performed.

In the laser output section 72d, the digital pixel data is converted into a laser on / off signal based on a control signal from a sequence controller (not shown), and the laser is output. Are turned on / off.

The image data input unit 70 and the image data
Data handled by the data output unit 72 is basically stored in the form of binary data in the memory 73 in order to reduce the capacity of the memory 73, but the deterioration of image data is taken into consideration. Then, it can be processed in the form of four-valued data.

FIGS. 1, 2, 3 (A) and 3 (B) show an embodiment of a CL lead wire and an optical fiber wire of a copying machine according to the present invention.
This will be described with reference to FIG.

FIG. 1 is a diagram for explaining a reading unit of a copying machine and a CL lead line / optical fiber line coupled to the reading unit. FIG. 2 is a diagram showing a CL lead line / optical fiber line.
It is sectional drawing of a line.

In FIG. 3A, the reading unit 4
0 is a lamp unit 41, a mirror 43, a lens 44,
The CCD substrate 3 includes a photoelectric conversion element 42 (CCD). C for supplying power to the lamp unit 41 and power to the CCD 42
Each of the optical fiber lines 4 is used to transmit image information read by the L-lead line 1 and the CCD 42 to the image processing apparatus and to prevent noise during transmission. C
The L lead wire 1 and the optical fiber wire 4 are arranged in parallel so that the CL lead wire 1 is at the center and two bundles of optical fiber wires 4 are on both sides thereof. And CL lead
The wire 1 is connected and held by a connecting member 2 (FIG. 1).

FIG. 2 shows each optical fiber-4 (five each).
And a state in which the respective portions of the CL lead wires 1 (five) are inserted into recesses provided in the connecting member 2 and are fixed to and held on the connecting member 2 with screws 9.

When the reading unit 40 scans in the scanning direction shown in FIG. 3A to read the original, and after the scanning shown in FIG.
When returning to the scanning direction, each of the CL lead line 1 and the optical fiber line 4 goes out of the reading unit 40, so that the lines are processed so that they do not get entangled or bite into the reading unit 40. It is necessary to.

In this wire processing, since the CL lead wire 1 and the optical fiber wire 4 are not self-supporting, there is a problem that the wire is bent or the bent portion falls. Therefore, as described above, the fact that the core of the optical fiber wire 4 is made of resin and the elasticity at the time of bending is higher than that of the CL lead wire 1 is used. For example, the optical fiber line 4 is divided into at least two parts (10
(If necessary, it is divided into five and five.) The CL lead wire 1 is arranged in parallel in the middle of the two divided optical fiber wire bundles.
And the respective portions of the CL lead wire 1 and the optical fiber wires 4 on both sides thereof are fixed to and connected to a connecting member 2 (using resin or the like).

[0056]

In the copying machine according to the present invention, the copy lamp lead wire and the optical fiber line to be wired from the reading unit to the outside of the reading unit are arranged in parallel and held by the connecting member. The wire and the optical fiber can be prevented from drooping and falling down.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment of a reading unit according to the present invention.

FIG. 2 is a sectional view of an embodiment of a CL lead wire and an optical fiber wire.

FIG. 3A is a view showing a bent state of a copy lamp lead wire and an optical fiber wire at the time of scanning in the embodiment of the reading unit of the present invention.

FIG. 3B is a diagram showing a bent state of a copy lamp lead wire and an optical fiber wire when the reading unit according to the embodiment of the present invention is inverted.

FIG. 4 is a cross-sectional view showing the entire configuration of the copying machine. .

FIG. 5 is a block diagram of an image processing unit.

FIG. 6A is a view showing a bent state of a copy lamp lead wire and an optical fiber wire during scanning of a conventional reading unit.

FIG. 6B is a diagram illustrating a conventional reading unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Copy lamp lead wire 2 Connecting member 4 Optical fiber wire 30 Copy machine 40 Reading unit

Claims (1)

(57) [Claims] 1. A reading unit comprising: a reading unit; and a connecting member for arranging and holding a copy lamp lead wire and an optical fiber wire arranged in parallel from the reading unit to the outside of the reading unit. Copier.