JPS63232568A - Original reader - Google Patents

Abstract

PURPOSE:To make an original visible so that a composite picture of different paper can be obtained easily, by making a sensor means movable against an original placing table. CONSTITUTION:A line sensor 4 electrically scans picture signals in the transverse direction (auxiliary scanning direction) of an original and mechanically scans in the longitudinal direction (main scanning direction) in accordance with the movement of a sensor moving section 7. Electric signals from the line sensor 4 are sent to a print head 9 after passing through a signal processing circuit. When a composite picture is to be produced by copying from the upper half of an original A and upper half of another original B, the original A is first placed on the normal position and its upper half is copied. When this copy is taken, the sensor moving section 7 is stopped at the midway. Then the original B is placed on the original placing table by shifting the original B by a half and the copying operation is restarted. Thus the desired composite picture of the originals A and B can be obtained.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a copying device, and in particular to an electronic office device that converts image information on a document surface into an electrical signal and records the signal again as it is or after processing. Regarding.

[Technical background of the invention and its problems] A so-called scanning copying machine that converts the image signal of an original into an electrical signal and then records it again can perform various signal processing on the converted electrical signal. This is an advantage.

However, in the past, it was inferior to normal image-forming type copying machines in terms of image quality, so there were few examples of it being put into practical use, and to some extent it was used as a copying machine by directly connecting a facsimile transmitter and receiver. .

The types of scanning copying machines that will appear in the future are ones that are similar to current facsimile machines, in which a sheet-like original is inserted into the image signal reading section, or those that are similar to normal image-forming copying machines. One idea is to place the original face down on the original table.

However, with either method, it is difficult to specify the required area on the document when simply copying the entire document or combining several documents to create a single page.

All of these problems are caused by the fact that the surface of the document cannot be visually observed.

Therefore, an optical system that uses a semi-transparent mirror or the like to observe the part of the document where the signal is being read can be considered, but even when specifying a part of the document, it is necessary to grasp the relationship with the whole document, and It is desirable to be able to see.

[Object of the Invention] An object of the present invention is to provide a document reading device that allows a document to be copied to be visually observed and a composite image of different paper surfaces to be obtained by a simple means.

[Summary of the Invention] This invention provides a sensor means opposite to the stand, and the sensor means is mounted on the stand so as to read part of the first and second image information placed on the stand. A document reading method is disclosed, which is characterized in that both signals obtained by the sensor means are made movable relative to the sensor means and are combined.

[Effects of the Invention] According to the present invention, since the sensor means is movable with respect to the table, it is possible to synthesize and copy information on the positions of arbitrary different documents on the table.

Further, since the sensor means does not contact the table, even if thick originals or originals with different thicknesses are placed on the table, reading is possible. Further, even if information is written directly on the table, there is no problem with the writing operation, and furthermore, it is possible to copy the information as it is [Embodiments of the Invention] Examples of the present invention are shown in FIGS. 1 to 3. Explain using diagrams.

As shown in FIG. 1, place the paper surface 2 facing upward on the document table 1,
A sensor section 3 is provided above it, facing the plane of the paper. As shown in FIG. 2, the sensor section 3 includes a line sensor 4, an imaging lens 5 that images the paper surface 2 on the line sensor 4, a sensor moving section 7 including an optical path changing mirror 6, and a sensor moving section. It consists of a drive meter 8 that moves the drive unit 7.

The line sensor 4 electrically scans the image signal in the transverse direction (that is, the sub-scanning direction) of the paper surface, and mechanically scans the image signal in the longitudinal direction (that is, the main scanning direction) by the movement of the sensor moving unit 7. The sensor section 3 including the sensor moving section 7 is supported by the document table 1 and the support member 1G. This support member 16 is provided so that there is a gap between the scanning position of the sensor moving unit and the entire paper surface 2 on the document table 1 at all times.

Thereby, as is clear from the figure, a space is formed between the sensor section 3 and the document table 1. For the line sensor 4, a semiconductor photodetection element such as a CCD is used.

What should be noted here is that the imaging lens 5 of the sensor moving unit 7
The line sensor 4 is driven and scanned together, and the light (information) incident on the line sensor 4 is always captured on the optical axis of the imaging lens 5. Since the optical path lengths are equal, problems such as shading cannot occur. In addition, the scanning position of the sensor moving unit 7 on the paper surface 2 is the reading position of the line sensor 4 (one-to-one correspondence).
Therefore, a desired partial image can be obtained on the product.

The electrical signal from the line sensor 4 is sent to the print head 9 after passing through a signal processing circuit 20 as shown in FIG. In the printer, recording paper 12 is sent out from a recording paper cassette 10 by a feed roller 11, and then sent to a print head 9.
recorded. For example, a thermal head is used as the print head 9.

Furthermore, if a light source 14 such as a lamp or a light emitting diode and a condensing lens 13 are attached to the sensor moving unit 7 as shown in FIGS. can be shown. It can be shown by a light spot as shown in FIG. 4, or it can be shown by a light line using a cylindrical lens 13 as shown in FIG. According to the embodiment, the entire surface of the paper to be copied can be visually observed at all times. Therefore, alignment is easy, and when copying a portion of a paper surface, it is easy to specify the position. Therefore, the characteristic parts of the present invention will be explained. First, if you want to make a composite copy of the upper half of the A page and the upper half of the 8 page, first place the input side in the correct position and copy the upper half. Naturally, the sensor moving part stopped halfway. For example, this stop position may be such that the copying operation is temporarily stopped when the moving light spot indicating the image signal detection position reaches halfway. Next, the sheet 8 is shifted by half the sheet surface and placed on the document table and the copying operation is restarted. As a result, a desired composite image of paper A and paper 8 can be obtained.

Since the sensor section can be made small, a stable device can be realized.

Further, according to this configuration, information can be written on the paper after the paper is placed on the document table 1, and furthermore, the written original can be immediately copied without having to be replaced.

In the above example, a one-line line sensor is assumed, but a sensor in which a plurality of photoelectric elements are lined up in the moving direction may be used.

Further, the electrical signal from the sensor may be stored once in a memory, and in this case, it becomes easy to use the image signal detection section and the recording section separately.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing an embodiment of the present invention.
Its cross-sectional view, Figure 3, is an explanatory diagram showing the flow of signals, Figure 4.
This figure and FIG. 5 are perspective views for explaining position display by light irradiation. 1... Original table, 2... Paper surface, 3... Sensor section, 4
... line sensor, 8 ... drive system, 9 ... print head, 12 ... recording paper, 16 ... support member

Claims (1)

[Claims] A first document having image information to be read is placed on a table, only a desired portion of the image information of the first document on the table is scanned and read by a sensor means, and then stopped. Then, a second original having image information to be read is placed on the table, and only a desired part of the image information of the second original on the table is scanned by the sensor means from the stop position. An original reading method characterized in that a composite image of desired image information of the first and second originals is obtained by reading the first and second originals.