JPS61295545A - Confirming device for original position of copying machine - Google Patents

Abstract

PURPOSE:To position an original accurately and easily when part of the original is copied by providing a switch means for original position confirmation and a control means which operates an original illuminating means for a specific time before copying operation. CONSTITUTION:When the original is mounted on a platen 1 at a specific position and an original position confirmation switch 30 is operated, a control part 50 decides the on operation signal of the switch 30 and then puts a light source 11 for exposure and a driving motor 71 to scan a lamp carriage 10. Then, the scanning operation of the lamp carriage 10 is performed twice and then a signal for stopping the operation of the light source 11 and driving motor 71 is outputted to stop the scanning operation of the lamp carriage 10. At this time, the original 2 on the platen 1 is irradiated with light from the light source 11 at any time and the light is transmitted through the original form, so a specific area of the original 2 to be copied is seen through from the opposite side of the original 2.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] The present invention relates to a document position confirmation device for a copying machine, and in particular,
The present invention relates to a document position confirmation device that can reliably set a portion of the document at a document set position on a platen when copying a portion of the document.

[Prior Art] In general, a copying machine is structured to copy a document in a range of document sets 1 to 1 which are appropriately defined on a platen. Therefore, the operator needs to position the original with respect to the original setting position on the platen.

[Problems to be Solved by the Invention] By the way, [When copying the entire i onto copy paper of a predetermined size, it is sufficient to align the edges of the original with the above-mentioned original setting position. Although the operation can be easily performed, for example, as shown in FIG. It becomes necessary to position a specific area of the document 2 to be copied with respect to S. In this case, it is difficult to correctly determine the position of a specific area of the document 2 to be copied from the back side, which not only makes the positioning operation of the document 2 troublesome, but also makes it difficult to accurately determine the position of the specific area of the document 2 to be copied from the back side.
There is a possibility that the specific area portion of the image will be set in a deviated manner, resulting in a problem that copy errors will occur more frequently.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned problems, and it is possible to extremely accurately confirm the position of the document area to be copied. To provide a document position confirmation device for a copying machine, which enables accurate and easy positioning of a document and reduces copy errors caused by misalignment of the document when copying. That is, the present invention is an apparatus for confirming the position of a specific area of a document placed on a platen, which includes a switch means for confirming the document position, and a document illumination means linked to the switch means before a copying operation. It is equipped with a control means that is not activated for a certain period of time.

In this invention, the switch means may be a manual switch provided on the console panel together with a copy switch, or the switch means may be a manual switch provided on the console panel together with a copy switch,
It may also be a switch that automatically outputs an operation signal upon detecting that it has been placed. The document illumination means described above differs depending on the exposure method, but in the slit exposure method, it is a lamp carriage equipped with an exposure light source, and in the full exposure method, it is installed in a so-called reflective cavity. This applies to exposure light sources such as flash light sources. Further, as the opening control means, a microcomputer may be provided with this function, or a single control device may be constituted by control parts such as a timer.

It is desirable that the operating time of the document illumination means based on the control means be selected to be sufficient for confirming the position of the document.

According to the above-mentioned technical means, the original illumination means is activated in conjunction with the switch means before the copying operation, so that the light from the original illumination means illuminates the original from the back side. It becomes possible to see through the image, and thereby the position of the specific area of the document to be copied can be visually checked.

[Embodiments] Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

FIG. 1 shows an example of a copying machine to which the present invention is applied. This copying machine is of a so-called slit exposure type, and is capable of moving forward and backward along the length of the platen 1 below the platen 1. It has a lamp carriage 10 disposed in the lamp carriage. The lamp carriage 10 is composed of an exposure light source 11 and a reflector 12 that irradiates light from the exposure light source 11 onto two sides of the document in a slit shape. During the copying operation, the platen 1 is designed to reciprocate once along the length direction of the platen 1, and to perform a scanning operation by emitting light from the exposure light source 12 on the outward path. The light irradiated on the two surfaces is transmitted through an appropriate number of mirrors 13.
and a photoreceptor 15 via an optical system member consisting of a lens 14.
During the copying operation, the light reaching the photoconductor 15 forms a latent image on the photoconductor 15 corresponding to the document 2, and this latent image is transferred to toner by a developing machine (not shown). After being developed, it is transferred to a predetermined copy paper in a transfer section, and then the copying operation is completed by a fixing process.In addition, in FIG. Paper tray for storing size copy paper, 18.1
Reference numeral 9 represents a feed roll that sequentially sends out the copy sheets in the paper tray, and 20 represents a paper discharge tray that stores the sheets that have been copied.

Further, this copying machine is provided with a document position confirmation device, and this document position confirmation device includes a document position confirmation switch 30 shown in FIG. and control means for operating the system. The document position confirmation switch 30 is composed of, for example, manual switching means, and as shown in FIG.
2 and the number of copies selection key 33 on the console panel 3.
It is set at 4. Further, as the above control means,
The microcomputer shown in Figure 3 is used,
In the figure, each output of the document position confirmation switch 30, copy switch 31, paper tray selection switch 32, and copy number selection key 33 is input as data to the control unit 50 via the input interface 40. ing. The control unit 50 includes a central processing unit (hereinafter referred to as CP tJ) 51, a random access memory (hereinafter referred to as RAM) 52, and a read only memory (hereinafter referred to as R
(referred to as OM) 53, and the ROM 53 has a fourth
As shown in the flowchart 1 in the figure, after determining the on-operation signal of the document position confirmation switch 30, the above-mentioned empty button is pressed! A program for scanning the t ridge 10 twice and a program for discriminating the on-operation signal of the copy switch 31 and performing a predetermined copy operation are stored in advance, and the above-mentioned CP (J50;t, input interface 40, and selects the exposure light source 11 of the lamp 4 printer 10, the drive motor 71 of the printer 1 printer 10, and a predetermined copy paper through the output interface 60. 1, a lay selection section 72 and various devices 7 necessary for the copying operation.
A control signal is sent to 3 to control these.

Next, the operation of the document position confirmation device according to this embodiment will be explained based on the flowchart shown in FIG.

Now, let us consider the case where a part of a large-sized original (for example, an A3-sized original of the Japanese Industrial Standards) 2 is to be copied onto copy paper of the JIS A4-sized version, for example.

In this case, place the original at a predetermined position on platen 1 by %X.
When the document position confirmation switch 30 is turned on, the control section 50 determines the ON operation signal of the document position confirmation switch 30, and then turns on the exposure light source 11 and the drive motor, as shown in steps A and B. 71 is activated to perform a scanning operation of the lamp carriage 10. Then, the $11111 section 50, as shown in steps C and D,
After performing the scanning operation of the lamp carriage 10 twice, a signal is output to stop the operation of the exposure light source 11 and the drive motor 71, thereby stopping the scanning operation of the lamp carriage 10. At this time, the original 12 on platen 1
Since the light from the exposure light source 11 is constantly irradiated and passes through the original paper, a specific area of the original 2 to be copied can be seen through from the back side of the original 2. In this state, the operator can accurately grasp the position of the specific area of the original 8I2 from the back side of the original 2, and can also grasp the position of the specific area of the original 2 with a sufficient time width. Therefore, the positioning operation of the original 2 in which the specific area of the original 2 is aligned with the original set position S on the platen 1 (see FIG. 5) can be easily and accurately performed. Due to the scanning operation of the lamp carriage 10, light from the second side of the document reaches the photoconductor 15 via the optical system member, but since the photoconductor 15 itself is not in the copying operation state, the photoconductor 15 A latent image corresponding to the original 81i2 is not formed.

After this, when the copy switch 31 is turned on after the paper 1 to ray selection switch 32 and copy number selection key 33 are operated in advance, the ill 1111 section 50 turns on the copy switch 31 as shown in steps E and F. After determining the ON operation signal, a series of copying operations is performed. At this time, the control section 50 activates the tray selection section 72 to select a desired paper tray, and also stores the set IC copy number value, and as shown in step G, the number of copies is set. Repeat the copying operation until the number of copies is reached,
Finish the series of copying operations. In this case, since the specific area of the original 2 to be copied is accurately positioned at the original setting position S of the platen 1, the original i image in the specific area of the original 2 is accurately placed on the copy paper without shifting. is copied to.

When copying the entire document 2, as in the conventional case, align the edge position of the document 2 with the document set position on the platen 1, without operating the document position confirmation switch 30.
The user may immediately turn on the copy switch 31 to perform a predetermined copy operation.

[Effects of the Invention] As explained above, according to the document position confirmation device for a copying machine according to the present invention, the position of the document area to be copied can be visually checked from the back side of the document before the copying operation. When copying a part of a document, it is possible to accurately and easily position the document, and it is possible to reduce copy errors caused by misalignment of the document.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram schematically showing the outline of a copying machine to which the present invention is applied, FIG. 2 is an explanatory diagram showing details of the Nakamura section in FIG. 1, and FIG. 3 is a document position confirmation device according to the present invention. FIG. 4 is a flowchart showing the operation of the document position confirmation device according to this embodiment, and FIG. 5 shows a problem when copying a part of a document in a conventional copying machine. It is an explanatory diagram. [Description of symbols 1 (1)...Platen (2)...Manuscript (10)
...Lamp carriage (original illumination means) (30)...
・Document position confirmation switch (switch means) (50)...
・i++ control unit (control means) Patent applicant: Fuji Xerox Co., Ltd. Agent: Tomohiro Nakamura, patent attorney (two others) Figure 4

Claims (1)

[Claims] A device for confirming the position of a specific area of a document placed on a platen, comprising a switch means for confirming the document position, and a control means for operating the document illumination means for a certain period of time before copying operation in conjunction with the switch means. 1. A document position confirmation device for a copying machine, characterized in that the document position confirmation device for a copying machine is characterized in that the document surface is illuminated before a copying operation so that the position of a specific area of the document can be visually checked.