JPS6116673A - Image reader - Google Patents

Abstract

PURPOSE:To increase the processing ability and realize versatile use by arranging an image forming means and an image receiving means which rotate relatively to a drum which has plural sheet original mounting parts in the drum, and reading sheet originals continuously. CONSTITUTION:Four light sources 7a, 7b, 7c, and 7d which are fixed on a rotating shaft and rotate as shown by an arrow and original reading elements 8a, 8b, 8c, and 8d which face the original mounting parts A, B, C, and D are arranged in the original mounting drum 2. When originals are mounted on the loading parts A and B, a original sensor 4 detects the originals, the number of sheets for recording is set on a console panel 5, and recording operation is started. Then, the rotating shaft 6 rotates to turn on 7a and 7b at the same time; 7a irradiates the original on the loading part A and 7b irradiates the original on the loading part B. Then, 7b turns off and 7a is still on to irradiate the original on the loading part B next. Simultaneously, 7d turns on to irradiate the original on the loading part A. Thus, some of the light sources 7a-7d turn off to irradiate the originals on the loading parts A and B by as many times as the set number of sheets.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an image reading device that has improved processing ability for document recording and can be used for multiple purposes.

(Prior Art) Recording devices such as electrophotographic copying machines have been widely used, and various electronic printers have been developed recently.
In most of these devices, the user stands in front of the device and processes each document one sheet at a time in order to read and record the image information to be recorded.

However, as the amount of information increases these days.

Not only the operating time of recording devices and printers tends to become longer, but also the waiting time tends to become longer. This problem would go away if we increased the number of available devices.

Purchase and maintenance costs increase, and installation space becomes a problem.

(c) Object and structure of the invention In view of the above points, the object of the present invention is to provide an image reading device that has a large processing capacity, is loud, and can be used for multiple purposes. An imaging hand R and an image receiving means which are rotatable relative to the drum are disposed in a drum having a sheet document mounting portion, and the sheet document mounted on the drum is continuously read.

) Example The present invention will be explained below based on the drawings.

FIG. 1 shows an embodiment of an image reading device according to the present invention.

A document mounting drum 2 made of transparent glass or acrylic is provided on a circular reading table l, and four document mounting portions A, B, C, and D are provided on this drum 2. Each document loading section is provided with document holding covers 3a, 3b, 3c, and 3d, and is also provided with a document sensor 4 that senses the presence of a document when the document is loaded. At each reading position on the periphery of the reading platform 1, there are operation buttons 5a for starting recording, setting 1 interrupt for recording number of sheets, specifying document size, etc.
, 5b are provided.

On the other hand, inside the document mounting drum 2, there are four light sources 7a that are fixed to a rotation shaft and rotate in the direction of the arrow.

7b, 7c, and 7d are provided, and furthermore, an original reading element 8a such as a COD is provided near the rotating shaft 6 and facing the original mounting portions A, B, C, and D.

8b, 8c, and 8d are arranged, and condenser lenses 9a, 9b, 9c, and 9d are arranged in front of the document reading element.

The area between the document loading portions and the upper portion of the document loading drum 2 may be treated to prevent external light from entering.

FIG. 2 shows a processing device for image signals obtained from the document reading device shown in FIG. 1, and has the same reference as FIG. 1.

Reference numerals indicate the same component. In the figure, 10 is a document reading 9 control circuit, lla, llb, 11c, and lld are amplifiers, and 12a, 12b, 12c.

12d is a 722 circuit, and 13 is a control circuit that controls opening and closing of the AND circuit based on a command signal from the operation panel 6.

Terminals a, b, c, and d are terminals (not shown), respectively.
Terminals e, f, and g are horizontal effective image area signals, respectively.

This is a terminal that outputs the vertical effective image area signal and other signals. Note that the number of printers or document recording units may be equal to or less than the number of document placement positions provided in the document reading device.

Next, the document reading operation will be explained using FIG.

Figure 3 shows the relationship between the on/off state of the light source for document irradiation and the position of the document irradiated when the light source is turned on.(A) shows the case when there is no interruption, and FIG. Aya,
In each case, the case where a document is loaded in the document loading section AhB will be explained.

When a manuscript is loaded into the manuscript mounting sections A and B, the manuscript sensor 4 detects the manuscript. When you set the number of recording sheets on the operation panel 5 and start recording, □! The rotation shaft 6 rotates and the light sources 7a to 7d rotate.

From Figure 3 (a), first light [7a and 7b]
light up at the same time, the light source 7a illuminates the document loaded in the document loading section A, and the light source 7b illuminates the document loaded in the document loading section B. The light sources 7a and 7b finish irradiating the original □
Then, the light source 7b is turned off, but the light source 7a remains lit and illuminates the document loaded in the document loading section B.

On the other hand, during this period, the light source 7d is turned on and illuminates the document mounted on the mounting section A. When entering the next cycle, the light source 7a is turned off, the light source 7C is turned on, and the light source 8C illuminates the document in the loading section A.

The light source 8d continues to be lit and now irradiates the document mounted on the mounting section B. In this way, one of the light sources 7a to 7d is turned on and then turned off, and the mounting portion A is opened for the set number of sheets.
Irradiate the original B.

9. The on/off state of each light source and the position of the document illuminated when the light source is on are as shown in No. 3'1lJ (a). The thick line indicates the lighting status.゛Turn on/off of the light sources 78 to 7d is controlled by the output of the document sensor 4 and the operation panel 5g, 5b, . . .
This is done based on the number of recording sheets inputted from.

-Image information of the irradiated original is stored in each mounting section A, B, C, and D.
A document reading element 8a is arranged opposite to the document reading element 8a.

8b, 8c, and 8d and sent as one image signal to the processing circuit shown in FIG.

In the processing circuit shown in FIG. 2, the image signal output from any of the original/document reading elements 8a to 8d based on the signal from the original reading 9 control circuit 9 is amplified by amplifiers 10a to 10d, and the image signal is amplified by the AND circuits 11a to 11d. Pass through lld to terminal a~
It is output to d. At this time, the opening and closing of the AND circuit 11a-1id is controlled by a control signal output from the control circuit 13 based on the number of recording sheets set on the operation panel 5.

Next, the document reading operation in the case of interrupt recording will be explained.

If you start recording with a document loaded only in the document loading section A, the light sources 7a to 7a will turn on in a cycle as shown in FIG. 3(B).
7d turns on and off, and the original is illuminated. If a document is placed in the document loading section B at a time tl when the recording of the set number of documents is not completed, and an interrupt is generated, the light source 7b will turn on when the light source 7C finishes irradiating the document in the loading section A. Then, the document in the mounting section A starts to be irradiated, but the light source 7c remains lit and the document in the mounting section B is now irradiated. Thereafter, the light is turned on and off repeatedly as shown in the figure, and irradiation is performed for the set number of sheets.

The processing of the image signals output from the original reading elements 8a to 8d is the same as in the case without interruption described above.

Therefore, the explanation will be omitted.

In the embodiment described above, four document loading sections and four light sources are provided, but the number can be any number. Further, the number of document reading elements can be one. Furthermore, if two or more document mounting drums like the above embodiment are provided on the horizontal panel.

The amount of documents that can be processed simultaneously is further increased.

FIG. 4 shows another embodiment of the image reading device based on the FIJ4 of the present invention.

In this embodiment, a document loading drum 15 made of transparent glass or acrylic is rotatably provided with its axis horizontally.
For example, three document mounting sections A, B, and C are provided on the document mounting section 5. Document holding covers 16a and 16b are attached to each mounting section.
, 16c and the document sensor 17 are the same as in the embodiment shown in FIG.

Inside the drum 15, there are light sources 18a, 18b and a CC.
Document loading portions A, B, and C of the document loading drum 15, in which a reading unit consisting of a document reading element 19 and a condensing lens 20 as shown in D are rotatably arranged; The drum 15 is rotated to a position where the original can be easily loaded. After loading the original, the reading unit is rotated to the nearest position A, B, or C based on the position of the original sensed by the original sensor I7, and then the light source 18a18b is turned on to start reading the original.

After reading one document, the reading unit 9 rotates in the direction of the arrow and is directed to the position where the next document is loaded. Rotation of this reading unit and light source 18a
, 18b is controlled from any position according to a predetermined sequence. Image signals output from the document reading element 19 of the reading unit are sequentially sent to a plurality of printers (not shown) to perform a recording operation.

If two or more such document reading devices are arranged side by side on the same panel, the amount of documents that can be processed simultaneously will be greatly increased.

(e) Detailed Description of the Invention As described above, the present invention provides an image forming means and an image receiving means which are arranged in a drum having a plurality of document loading sections, and which are rotatable relative to the drum. Since the loaded sheet originals are read continuously, the processing capacity is increased and single-interrupt processing becomes easier.Also, arbitrary editing such as enlargement, reduction, and masking can be performed for each original, making it possible to turn the recording device into an intelligent one. become. moreover.

It is possible to improve the functionality of the recording device, which also enables combinations of scanned documents.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of an image reading device according to the present invention, FIG. 2 is a processing device for image signals output from the image reading device, and FIG. 3 is a document illumination of the image reading device shown in FIG. In the on/off cycle of the light source, (a) is when there is no interrupt.
FIG. 4 is a perspective view of another embodiment of the image reading apparatus according to the present invention.

Claims (2)

[Claims] (1) An image reading device comprising: a drum having a plurality of sheet document mounting portions; and an image forming means and an image receiving means arranged within the drum so as to be rotatable relative to the drum. (2) The image reading device according to claim 1, wherein a plurality of the image forming means and the image receiving means are provided corresponding to the document loading section.