JPS63127663A - Small-sized copying device - Google Patents

Abstract

PURPOSE:To attain an accurate print by driving a motor for a prescribed time when an original sensing switch senses an original so as to make the original read speed equal to the paper carrying speed. CONSTITUTION:An optical sensor 4 being an original sensing switch is provided to opposed upper/lower faces to the left side (paper supply part 31) of an opening part 2a. In feeding the original P to the paper feeding part 31, the optical sensor 4 of the original sensing switch is turned on and a motor 25 is driven for a prescribed time. Thus, the original carrier roller 21 and the platen roller are driven in the same direction at the same peripheral velocity. The original carrier roller 21 is driven to allow the original to pass through the picture read means of a CCD sensor 14 being the picture read means from the paper feeding part 31 and to be discharged to the paper discharge part 32. Thus, the original carrier roller and the paper carrier roller are driven at the same peripheral speed by having only to feed the original to the paper feed part at picture read.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention comprises an image reading means for scanning an original surface to read an image, and a printing means for printing the read image on paper. The present invention relates to a small-sized copying apparatus in which paper printed by means is taken out to the outside by a paper conveyance roller.

(BL Conventional Technology) Due to the structure of electrophotographic copying machines, there is a limit to miniaturization and cost reduction, and the originals that can be copied must be the size of a postcard. Therefore, small originals can be printed on large sheets of paper. The disadvantage is that it requires pasting and copying, which is a cumbersome process.

Therefore, a portable manual copying apparatus has been proposed which is equipped with a compact image reading means such as a CCD sensor and a small printing means such as a thermal printer in the main body.

This manual copying device reads an image on the document surface by manually scanning the document surface, and prints the read image on a built-in paper such as thermal paper.

During printing, paper is conveyed by a paper sheet feeding roller such as a platen roller in contact with the head surface of the thermal printer.

During this paper conveyance, image information on the document surface is printed on the paper.

(C1 Problem to be Solved by the Invention) However, the above-mentioned conventional manual copying apparatus has the disadvantage that it is necessary to manually scan the document surface when reading an image, and this work is troublesome.Also, the scanning speed of the document surface is Since the transport speed of the paper to be copied and the paper to be copied are not the same, there is a drawback that the read image cannot be accurately printed on the paper.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the conventional art, an object of the present invention is to automatically pass the image reading position and read the image on the surface of the original by simply feeding the original into the paper feed section during image reading. To provide a compact copying device that eliminates the work of manually scanning the surface of a document, equalizes the document conveyance speed during document reading and the paper conveyance speed during printing, and can accurately copy the document surface with a simple operation. It's about doing.

(d) Means for Solving the Problems This invention comprises an image reading means for scanning the surface of a document to read an image, and a printing means for printing the read image on a sheet of paper. In a small-sized copying device in which a document is taken out to the outside by a paper conveyance roller, a document conveyance roller that is driven when conveying the document is provided at a position facing the image reading means, and a paper feed section and a paper discharge section are further provided before and after the conveyance roller. At the same time, a document detection switch that detects a document and turns on the document is provided in the paper feed section. Further, a motor is provided that is driven for a certain period of time from when the document detection switch is turned on, and the rotation of the motor is transmitted to the document Ill feed roller and the paper recess feed roller to equalize the circumferential speeds of the document feed roller and the paper feed roller. The present invention is characterized in that it is provided with a means for transmitting the information.

(81 Effect) In the compact copying apparatus according to the present invention, when an original is fed into the paper feed section during image reading, the original detection switch detects the original and turns on.At this time, the original detection switch detects the original and turns on. A motor is driven. This motor is driven by a transmission means to rotate the document for a fixed period of time. When the document transport roller rotates, the document passes from the paper feed section to the image reading position of the image reading section and is ejected to the paper ejection section. .The image on the surface of the document is read during this document conveyance.Meanwhile, the paper is conveyed to the outside by the rotation of the paper conveyance roller.This paper & finally, the image read by the image reading means is printed on the paper by the printing means. At this time, since the peripheral speed of the paper transport roller is the same as the peripheral speed of the document transport roller, the image read by the image reading means is accurately printed on the paper as is.

Furthermore, if the motor stops rotating after a certain period of time,
The document transport roller and paper urethral roller stop at the same time.
Reading of the image of the original and printing of the image onto paper is completed.

Due to the above-described effects, the image reading speed and the paper conveyance speed become equal, and accurate printing is performed.

(flEmbodiment) FIG. 1 is a side sectional view of a manual copying apparatus according to an embodiment of the present invention, and FIG. 2 is a front view of the same manual copying apparatus.

In this manual copying apparatus, an image reading section unit 1 and a printing section unit 2 are mounted so as to be vertically separable by a locking device 3. FIG. 2 shows a state in which both units are fitted. As shown in the figure, a gap corresponding to the height of the locking device 3 is formed between the upper and lower units. The front side of this gap constitutes a paper feeding section 31, and the document is fed from the front position. Further, the conveying roller 21 is exposed at the center of this gap. Furthermore, a paper discharge section 32 is configured in a gap on the rear side of the conveyance roller 21.

As shown in FIG. 1, inside the image reading unit 1, an LED array 11 serving as a light source, a transparent glass 12, a convergent light transmitting body 13, a CCD sensor 14, and the like are provided. The transparent glass 12 has the same length as the conveyance roller 21, and is disposed so as to be exposed downward from the bottom surface of the image reading section unit 1.

When reading an original, the original P is irradiated with light from the LED array 11, and the reflected light from the original surface is transmitted to the CCD sensor 14 via the convergent light transmitter 13, as shown by the dashed line in the figure. be illuminated. This allows the image on the document surface to be read. The image information on the document surface is image-processed by an image processing circuit (not shown) and then sent to a thermal head 23 (described later). A slit 2b is formed in the front-rear direction in FIG. 1 on the lower surface of the printing unit 2. A paper cutter (not shown) is provided on the right side wall of the slit 2b. Further, in the center of the inside of the printing unit 2, a motor 25 is provided which has a pulley 25b at the front end of a rotating shaft 25a, and below the motor 25 there is a thermal paper 22 wound in a roll and a thermal head. 23 and a platen roller 24 which is a paper conveyance roller. The platen roller 24 has a roller surface close to the head surface of the thermal head 23. Further, the thermal paper 22 is sandwiched between a thermal head 23 (=nib platen roller) and pulled out from a position above the platen roller. A pulley 24b is provided at the front end of the roller shaft 24a of the platen roller 24, and a drive belt 26 is passed between the pulley 24b and a pulley 25b of the motor 25. As shown in the figure, the motor 25's boot U
25b forms a pulley groove having the same diameter. A drive belt 26 and a drive belt 27 are placed on the outside and inside of the pulley groove relative to the motor 25, respectively.

When the motor 24 rotates clockwise, the platen roller 2
4 rotates clockwise at the same time. At this time, the thermal paper 22 is sandwiched between the platen roller 24 and the thermal head 23, and the rotation of the platen roller 24 causes the slit 2
transported to b. During this conveyance, image information is printed on the thermal paper 22 from the thermal head 24.

Further, an opening 2a is provided in the upper surface of the printing section unit in the left-right direction (front-back direction in FIG. 2), and the original document roller 21 is exposed upward from the opening 2a. The document conveying roller 21 has a roller shaft 21a that is connected to the printing section unit 2.
The roller surface is in contact with the transparent glass 12 of the image reading unit. Further, the document conveyance roller 21 faces the CCD sensor 14 above at this position. Further, on the near side of the roller shaft 21a of the conveyance roller 21, a pulley 21b having the same diameter as the above-mentioned pulley 24b is provided. Pulley 21b and pulley 2 of motor 25
A drive belt 27 is passed between the frame and the drive belt 5b. The rotation of the motor 25 is controlled by the drive belt 27.
lb, and the document conveying roller 21 is transferred to the motor 25.
Rotate in the same direction (clockwise).

Further, on the left side of the opening 2a (sheet feeding section 31), an optical sensor 4 serving as a document detection switch is provided on opposing upper and lower surfaces. The optical sensor 4 is configured such that a light source for projecting light is provided on one of the upper and lower surfaces, and a light receiving sensor is provided on the other surface.

The optical sensor turns on when it detects a document. Further, the ON signal is input to a motor driver (not shown), and the motor 25 is driven by the motor driver. This motor driver is equipped with a timer (not shown), and the optical sensor 4
The timer is turned on for a certain period of time from when the timer is turned on, and the motor driver drives the motor 25 during that time.

With this configuration, the document P is transferred to the paper feed section 31.
When the paper is fed, the motor 25 rotates for a certain period of time from when the optical sensor 4, which is a document detection switch, is turned on. Further, the rotation of the motor 25 is transmitted to both the document transport roller 21 and the platen roller 24, which is a paper transport roller, by a pulley 25b, a drive heald 26, 27, and pulleys 24b, 21b, which are transmission means, and the document transport roller 21 and the platen roller 24, which are paper transport rollers, are The platen roller 24 is rotated in the same direction (clockwise) and at the same peripheral speed. By the rotation of the document transport roller 21,
The document passes from the paper feed section 31 to the image reading position of the CCD sensor 14, which is an image reading means, and is discharged to the shrine section 32. The image of the document can be read during this document conveyance. On the other hand, the sheet is conveyed to the outside through the slit 2b by the rotation of the platen roller 24, which is a sheet conveyance port.

When the paper is delivered, the image read by the CCD sensor 14 can be printed on the paper by the thermal head 23, which is a printing means. Moreover, since the original conveyance roller and the paper conveyance roller have the same circumferential speed, the original one-goose feeding speed and the paper conveyance speed become equal, making it possible to accurately copy the original.

+g) Effects of the Invention According to the present invention, the document conveyance roller and the paper conveyance roller can be rotated at the same circumferential speed by simply feeding the document to the paper feeding section during image reading. At this time, the document is conveyed from the paper feed section through the image reading position and to the paper discharge section by the rotation of the document conveyance roller. Since the image of the original is read by the image reading means when the original is transported, there is no need to manually scan the original surface as in the past, and the image of the original can be read easily. Since the sheets are transported at the same transport speed, the original image information read during the original transport can be accurately copied.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a small-sized copying machine which is an embodiment of the present invention. FIG. 2 is a front view of the small-sized copying apparatus. FIG. 3 is a diagram showing the motor and feed heald of the same compact copying machine. 4-optical sensor (original detection switch), 14-CCD sensor (image reading means), 21-original transport roller, 23-thermal head (printing means), 24-platen roller (paper transport roller), 25-motor, 26 - drive belt, 27 - drive belt.

Claims (1)

[Claims] (1) A small copying device that is equipped with an image reading device that scans the surface of a document to read an image, and a printing device that prints the read image on paper, and that takes out the paper printed by the printing device to the outside using a paper conveyance roller. A document transport roller that is driven when the document is transported is provided at a position facing the image reading means, and a paper feed section and a paper discharge section are provided before and after the document transport roller, and a document is detected in the paper feed section. A motor is driven for a certain period of time from when the document detection switch is turned on, and the rotation of the motor is transmitted to the document transport roller and the paper transport roller so that their circumferential speeds are equal. A small-sized copying device characterized by being provided with a transmission means.