JPS59133567A - Original center position indicator - Google Patents

Abstract

PURPOSE:To indicate the center of an original and obtain a good recording having no deviation of center position by providing an illuminating lamp in an original exposing device and lighting up the lamp at a position half the length of scanning of standard paper size. CONSTITUTION:A lamp 8 that irradiates center position of an original and a magnet 7 are attached to the original image exposing device 1, and a lead switches 10-10'' are attached to a guide plate 9. When a paper size selector button and a center indicating button are depressed before copying, the exposing device 1 shifts to a position half of the paper size and stopped by action of one of lead switches 10-10''. The illuminating lamp 8 is lit up and the center of the original is set to this position. When a copy button is depressed next, the exposing device 1 returns to original point, and copying is performed. Thus, a good recording having no deviation of center position of original can be made when copying a clipped original etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a document center position display device in an electrostatic recording device such as a copying machine.

Conventional configuration and its problems Conventionally, in electrostatic recording devices such as copiers, the original image is exposed after the original is placed on the original platen glass, assuming a standard size original. If there is an arrow or triangle mark near the edge of the crow indicating the position of the standard size, or if a document with a non-standard size is used.

For example, if you want a cup of coffee that focuses on a part of the article in a newspaper, fold the newspaper to the standard size so that the desired part is in the center.2. Position it on the standard size mark next to the platen glass. I made a copy of it, etc.
"O": The practice was to place the original on the platen glass with the three pages of the required part in the center and make a copy.

Particularly when enlarging and copying a manuscript, the corners of the manuscript may fall out of the drawing, so it is important to closely align the parts of the manuscript that require F/T. However, this method has the drawbacks of poor work efficiency and difficulty in obtaining the required images.

In addition, as another conventional example, below the platen glass and
Spotlight H-1 is placed under the moving space of the original image exposure device.
There was a fixed installation that determined the angle and position to illuminate the document table glass at the center of the document from below, but since the distance from the spotlight to the document table glass was about 100W, the installation angle of the spotlight was fixed. There was a drawback that even if the position was slightly shifted, the irradiation position on the platen glass would be significantly shifted.

Also, since it can be confirmed that the center of the document is illuminated by the spotlight by an image that appears behind the document, a sword with a large amount of spotlight is preferable, but if the distance to the document platen glass is about 100rrrIn. It was necessary to use a lamp whose power consumption was relatively high. Historically, there has been a drawback in that in order to fix the spotlight in a predetermined position, a plurality of spotlights are required to correspond to a plurality of standard sizes.

Purpose of the Invention The present invention is intended to eliminate the drawbacks of the above-mentioned conventional examples, and is to place an original in an electrostatic recording device such as a copying machine so that the original surface is in contact with the original glass, and to In an original image exposure device configured to illuminate an original image, the center position of the original size to be exposed is displayed on the original platen glass.

An object of the present invention is to provide a document center position display device which realizes high-quality image recording without the center position being distorted by aligning the center part of the document with the center position display part.

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a document image exposure device with a document center position irradiation lamp, and places the document image exposure device at a position approximately half the scanning length of a standard paper size in an exposure scanning path. along with stopping it.

The 5th page document center position irradiation lamp is turned on to illuminate the document surface on the document table glass.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a copying machine incorporating a document center position display device according to an embodiment of the present invention, in which 1 is a document image exposure device;
It is guided by the guide rail 2 and scans back and forth in the directions of arrows A and A'. Reference numeral 3 denotes an exposure lamp provided in the document image exposure device 2, which illuminates the document surface of the document 5 placed on the document platen glass 4 and forms the document image on the photosensitive drum 6 through the optical path shown by arrow B. It is configured as follows. 7 is a magnet and the document image exposure device 2
It is fixed at the end of the scanning direction. Reference numeral 8 denotes a document center position irradiation lamp in the scanning direction A of the document image exposure device 2.

It is provided approximately at the center in the direction perpendicular to the A' direction, and at a position corresponding to the center position of the standard paper size on the document table glass 4.

Reference numeral 9 denotes a guide plate, which is provided in parallel to the guide rail 2 on the main body of the copying machine. Reference numeral 10 denotes a lead switch 6 page switch, which is located at a position where conduction occurs when the document center position irradiation lamp 8 of the document image exposure device 2'' reaches the negative position of half the standard paper size L in the middle of the scanning direction A, A'. It is provided on the guide plate 9. Similar to 1o, 10' and 10'' are reed switches, and are provided on the guide plate 9 so as to be electrically connected when another standard paper seipe 8 arrives.

FIG. 2 is a perspective view showing the main parts of a copying machine incorporating a document center position display device according to an embodiment of the present invention.
The same parts as in FIG. 1 are given the same numbers. A shaded area C in FIG. 2 indicates an irradiation area of the original 6 irradiated by the original center position irradiation lamp 8. As shown in FIG. Since the distance between the original 5 and the original center position irradiation lamp 8 is short, the lamp passes through the original and makes images such as characters on the original surface stand out so that they can be read from the back side.

FIG. 3 is a perspective view showing the appearance of the copying machine shown in FIGS. 1 and 2. FIG. 11 is the main body of the copying machine with A4. B4
．． Marks and letters indicating a predetermined position at the edge of page 7 of a standard paper size such as A3, and a triangular mark 12.12"i as a positioning reference are painted and displayed in advance. 13 is a document holding member; 3 shows the open state, and when copying, it is used closed as shown by the arrow. 14 is a copy completed paper accumulation tray.

15. 15', 15" is the paper size selection button, 16
1 is a center display button, and 17 is a coffee button.

FIG. 4 is a diagram showing the sequence of a copying machine incorporating the document center position display device configured as described above. Here, the B4 size sequence will be described.

When the paper size select button 16 is pressed and then the center display button 16 is pressed, the exposure device A-direction scanning motor is activated and reed switches 1o and 1df are turned on. When the reed switch 10 is turned on, the paper size select button 16' of person 4 is in the OFF state, so there is no change in the next sequence, and when the reed switch 10' is turned on, the paper size select button 16' of person 4 is in the OFF state.
Since the paper size select button 4 is in the ON state, the exposure device A direction scanning motor is stopped and at the same time, the document center position irradiation lamp 8 is turned on. Since the original image can be seen from the back side of the original, such as the hatched area C in FIGS. 2 and 3, it is possible to match the entire image to the hatched area C as required. After adjusting the center position of the document, when the copy button is pressed, the exposure device A' direction scanning motor moves, and the document image exposure device 1 is returned to its origin. The document center position irradiation lamp 8 is turned off. When the origin detection switch is turned on, the original image exposure device is moved from the direction A' to the direction A, and at the same time the exposure lamp 5 is turned on. When a B4 size original is exposed and the B4 scanning completion detection switch is turned on, the exposure lamp 5 is turned off and at the same time, the original image exposure device is returned to the origin (moved in the A' direction.The origin detection switch is turned on). Once entered, the exposure device A' direction scanning motor is stopped, and at the same time the B4 paper size select button 16 is pressed.
fOF Return to F-shape d.

Effects of the Invention As described above, according to the present invention, the center position of the original paper size of 9 pages of original image exposure is irradiated from below the document glass, so if the original is placed on the document glass, the paper will not be exposed. Since the center position of the size appears bright, it has the advantage that alignment can be easily performed when copying a desired part at the center.

Unfortunately, in the present invention, a document center position irradiation lamp is provided above the document image exposure device, and the document center position irradiation lamp is stopped corresponding to the center positions of a plurality of paper sizes. This has the advantage of not requiring the use of other lamps.

Furthermore, since the document table glass and document center position illumination lamp can be placed close to each other, even if the installation angle of the lamp is slightly incorrect, the correct position can be illuminated, and at the same time, a sufficient amount of light can be obtained with a small lamp with low power consumption. It has the advantage of being

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of an embodiment of the present invention, FIG. 2 is a partially sectional perspective view, FIG. 3 is a perspective view of the external appearance of a copying machine according to an embodiment of the present invention, and FIG. The figure is a sequence diagram of a copying machine according to the present invention. 10 Page...Original image exposure device, 3...Exposure lamp, 4...Original table glass, 6...Original, 7...Magnet , 8... Original center position irradiation lamp, 10... Reed switch. Name of agent: Patent attorney Toshio Nakao EL or one person Figure 1 Figure 2

Claims (4)

[Claims] (1) A document center position irradiation lamp is provided in the document image exposure device, and the document image exposure device is stopped at a position approximately half the standard paper size scanning length in the exposure scanning path, and the document center position irradiation lamp is turned on. A document center position display device characterized in that it is configured to illuminate the document surface on a document platen glass. (2) The document image exposure device is characterized by being provided with a detection means corresponding to one or more standard paper sizes to detect when the document image exposure device reaches a position half of the standard paper size scanning length in the scanning path. A document center position display device according to claim 1. (3) The document center position display device according to claim 2, further comprising selection means for selecting one of a plurality of standard paper sizes. (4) Claim 1, characterized in that the document center position display sequence 2 base and the original center position display sequence of the document image exposure device are configured to operate in a mode independent from the normal document image non-lighting sequence. Document center position display device as described.