JPH0434571A - Image forming device with automatic document feeder - Google Patents

Abstract

PURPOSE:To miniaturize a device by arranging an information addition device at a hollow part formed on a carrying belt and composing and copying the image of a document and optional information. CONSTITUTION:A bracket 30 is provided on the inside of a cover 23 under a state that it is positioned at the hollow part of the carrying belt 26. Simultaneously, guide rail members 31 and 31 in a direction perpendicular to the feeding direction of the document are provided successively to the braket 30. Besides, the information addition device 32 made to be a cartridge for forming the information other than the image of the document on the recording paper is held by the rail members 31 and 31 under a state that it is freely attachable and detachable. On the other hand, a control means which forms a transparent part 42 for exposure by an exposure device 11, correspondingly positions it at the aperture 33 of the addition device 32 at an information adding mode time and positions it at a place separated form the upper surface of a document platen 2 at a document image forming mode time is provided at one part of the belt 26 where the addition device 32 is housed in the hollow part. Thus, by effectively utilizing the hollow part formed on the carrying belt, the cost of the device is drastically reduced and the device is miniaturized.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention records information other than images of a document! The present invention relates to an image forming apparatus with an automatic document feeder equipped with an information adding device for forming information on three sheets of paper.

[Conventional technology]

As an image forming apparatus with an automatic document feeder equipped with the above-mentioned information addition device, for example,
As seen in the publication, an endless conveyor belt is disposed above the document table to convey the document from the document feeder to a predetermined position on the document table and discharge it to the document tray. An information adding device for forming information other than the original image on recording paper is arranged between the document tray and the document tray so as to be able to move toward and away from the document table.

According to the above image forming apparatus, it is possible to form an image of a document and information other than the image of the document on a single sheet of recording paper,
Further, by separating the information adding device from the document table, the document can be ejected to the document tray without being interfered with by the information adding device.

[Problem to be solved by the invention]

However, in order to enable the document to be ejected to the document tray, the information adding device is configured to be movable toward and away from the document table, which increases the cost of the device.

Further, in the above-mentioned apparatus, the image and information of the original are simultaneously formed on the recording paper by reading the image (hereinafter referred to as exposure) twice, which has the disadvantage that part of the image of the original is missing.

Alternatively, the information adding device is placed outside the exposure scanning range for the largest size document to be copied, and the exposure scanning range of the exposure device is expanded to a position corresponding to the information adding device, and , is provided with a refeeding unit for image composition that refeeds the recording paper after image formation to the image forming unit, and forms an image of the original on the recording paper by, for example, the -th exposure, and at the same time, the recording paper is By refeeding the paper to the image forming unit and combining the additional information with the image forming surface of the forward-bending recording paper through the second exposure, the entire image of the original and the additional information are formed on the recording paper. However, as the exposure scanning range of the exposure device is expanded, the size of the device becomes larger.

An object of the present invention is to solve the above-mentioned disadvantages through a rationally improved technique that effectively utilizes the hollow portion formed in the endless conveyor belt of an automatic document conveyor.

[Means to solve the problem]

An image forming apparatus with an automatic document feeder according to the present invention that achieves the above object includes a refeeding unit for image composition that refeeds recording paper after image formation to an image forming unit, At the top of the document table, there is an endless conveyor belt that conveys the document from the document feeder to a predetermined position on the document table and discharges it to the document tray. An image forming apparatus with an automatic document feeder equipped with an information adding device for forming information, wherein the information adding device is disposed in a hollow part of the endless conveyor belt, and a part of the conveyor belt is provided with additional information@ A control means is provided which forms a transparent part for reading, and positions the transparent part corresponding to the information adding device in an information addition mode, and positions the transparent part at a location away from the upper surface of the document table in a document image forming mode. It is characterized by the fact that

[Effect]

According to the characteristic configuration described above, in the information addition mode, the transparent portion of the conveyor belt is positioned corresponding to the information addition device, and the additional information added to the information addition device is formed on the recording paper.

In the original image forming mode, the transparent portion is located away from the original platen, so for example, if the original is a transparent sheet, or if an image of a small-sized original is formed on a large-sized recording paper. In such a case, additional information is not formed on the recording sheet through the transparent portion.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 schematically shows an electrophotographic copying machine (an example of an image forming apparatus) that is capable of composite copying and is equipped with an automatic document feeder 1.
A photoreceptor 4 is horizontally mounted on a copying machine main body 3 having a transparent document platen 2 on the top, and around the photoreceptor 4 are a charging device W5, a blank lamp 6 for setting an exposure area, a developing device 7, A transfer device (image forming section) 8, a recording paper separation device 9, and a cleaning device 10 are arranged, and the copying machine main body 3
An exposure device 1) with a movable optical system is disposed in the upper space of the cassette case 12, and a paper feeding and conveying device 13 that conveys the recording paper e in the cassette case 12 to the transfer device 8 at a predetermined timing, and a recording medium after transfer and separation. A paper ejection transport device 15 that transports the paper e to the fixing device 14 and a pair of paper ejection rollers 17 that eject the fixed recording paper e to a paper ejection tray 16 are provided.

A paper refeeding device 18 having a double feeding prevention function is provided in the lower space of the copying machine main body 3, and the intermediate tray 1 of the paper refeeding device 18 reverses the recording paper e after fixing.
a reversing paper feeding device 20 that feeds the recording paper e to the reversing paper feeding device 20 or the paper ejection tray 16; A conveyance device 22 is provided to feed the paper e to the paper feed conveyance device 13 in a combined manner.

The automatic document feeder 1 is configured as follows.

That is, as shown in FIG. 2, a pair of driving and driven rollers 24 are installed inside a hard cover 23 that can be opened and closed around the axis of the exposure device 1) in the exposure scanning direction (document feeding direction).
．． 25, and an endless conveyor belt 26 is wound around the pair of rollers 24 and 25, and the original platen 2
While configuring a document transporting means 27 for transporting the document a to a predetermined position above, a document feeding section 28 is provided upstream of the document transporting means 27 in the paper feeding direction, and is connected to the document transporting means 27 to feed the document. A document tray 29 is arranged on the downstream side in the paper direction.

In the automatic document feeder l having the above configuration, as shown in FIGS. 3 and 4, the bracket 3 is installed inside the cover 23 while being positioned in the hollow portion of the transfer belt 26.
0, a guide rail member 31, 31 in a direction perpendicular to the paper feeding direction of the original is provided in series with the bracket 30, and information other than the image of the original is formed on the recording paper e. The information addition device 32 is detachably held on the guide rail member 31, 31.

This information adding device 32 is provided with drive and tension rollers 35, 36 on both sides of a cartridge case 34 in which an opening 33 for reading additional information is formed on the lower side, and rollers 35, 36 for driving and tension are provided in the vicinity of the rollers 35, 36. A presser roller 37 is provided, and a milky-white endless belt recording medium 38 is wound around the rollers 35, 36, 37, and the recording medium 38 is marked by physical means such as writing or pasting. Arbitrary information such as "Top Secret", "Circulation", date, etc. is provided at predetermined intervals, and furthermore, an input side gear 39 is provided on the drive roller 35.

Then, the information adding device 32 is attached to the guide rail member 3.
1. The output side gear 40 meshes with the input side gear 39 of the information adding device 32 in a state where it is loaded at the predetermined position of 31.
is provided on the cover 23, and a stopper 4 that can be freely fixed and released for fixing the information adding device 32 at the loading position.
1, and a sensor S for detecting the home position of the recording medium 38 based on a reference line C formed on the recording medium 38, are provided on the bracket 30.

On the other hand, a transparent portion 42 for exposure by the exposure device 1) is formed in a part of the conveyor belt 26 in which the forward bending information adding device 32 is housed in the hollow portion, and a transparent portion 42 is formed on the conveyor belt 26. Forming a reference 'Iad nearby, and
A sensor S is provided to detect that the transparent portion 42 is positioned facing the opening 33 of the cartridge case 34 based on the reference line d.

A motor M is connected to the output gear 40 via a gear reduction mechanism G to constitute a recording medium moving means 43 for moving the recording medium 38 in a direction perpendicular to the document feeding direction. .

Further, information selection means 44 for selecting an arbitrary information sheet formed on the recording medium 38, and the recording medium moving means 43
an information position setting means 45 for moving the recording medium 38 to change the position of an arbitrarily selected information sheet; an information transfer means for transferring the position-set information sheet onto a recording paper e; The conveyor belt 26 is driven so that the transparent portion 42 is located at a position corresponding to the opening 33 of the information addition device 32 in the addition mode, and the transparent portion 42 is located away from the upper surface of the document table 2 in the document image forming mode. A control means 46 is provided for control.

The information selection means 44 includes an information selection mode switch 47
When a predetermined numeric keypad 48 provided on the top surface of the copying machine main body 3 is operated after operating , the information corresponding to the corresponding I is stored, and the information position setting means 45 stores the information corresponding to the information position. When a predetermined balance sheet 48 is operated after operating the setting mode switch 49, the recording medium moving means 43 is controlled so that the selected information is located at the position corresponding to that key.

The information transfer means compositely copies the image of the document a and the selected information onto the recording paper e, and when the print button is operated after selecting the composite copy mode, the exposure device full is activated twice. Exposure scanning is performed, and during this time, the control means 46 drives and controls the conveyor belt 26 to feed and discharge the document a. For example, -
Prior to the second exposure scan, the document a is fed to a predetermined position on the document table 2 with the transparent portion 42 of the conveyor belt 26 being positioned away from the top surface of the document table 2 (see FIG. 4). Then, the image of the document a is formed as a latent image on the surface of the photoreceptor and transferred onto the recording paper e, and the recording paper e is shifted onto the intermediate tray 19.

Then, before the second exposure scan is performed, the document a is ejected to the document tray 29, and the transparent portion 42 of the conveyor belt 26 is positioned at a location facing the opening 33 of the information adding device 32, and By refeeding the recording paper e from the intermediate tray 19 in time with the second exposure, the selected information is compositely copied at a predetermined position on the recording paper e.

Thus, the selected information sheet can be arbitrarily set in the direction orthogonal to the paper feeding direction of the document a, and the information transfer position can be set in the document feeding direction by setting the paper feeding timing at the time of information transfer. Since the recording paper feed direction can be changed, the arbitrarily selected information sheet can be formed at any position on the entire surface of the recording paper.

When forming the latent image of the information @b, the blank lamp 6 is controlled so that unnecessary information a and the image of the document a are not formed as a latent image, that is, so that only the selected information is formed as a latent image on the surface of the photoreceptor. be done.

In the embodiment, the information addition device f32 is configured so that any information can be transferred to any position on the recording paper, but the configuration described in Japanese Utility Model Publication No. 176542/1982 is not applicable. It can be changed to a liquid crystal display type.

〔Effect of the invention〕

As explained above, the present invention effectively utilizes the hollow part formed in the endless conveyor belt of the automatic document feeder, and arranges the information adding device in this hollow part, and
By making a composite copy of the original image and arbitrary information, it is possible to form the entire image of the original on recording paper without expanding the image reading range and without increasing the size of the device. Moreover, when forming an image on a document, the transparent part for forming information is separated from the top surface of the document table, so for example, if the document is a transparent sheet or an image of a small document is transferred to a large document. When forming the additional information on the recording paper, there is no inconvenience that the additional information is formed on the recording paper through the transparent portion, and further,
Since the information adding device does not get in the way of ejecting the original, the device can be significantly reduced in cost and size compared to conventional image forming devices in which the information adding device is sealed in the document table and can be moved toward and away from the document table. Overall, the object of the present invention has been achieved through rationally improved technology that effectively utilizes the dead space formed in the automatic document feeder.

[Brief explanation of drawings]

FIG. 1 is a schematic longitudinal sectional side view of an electrophotographic copying machine as an example of an image forming apparatus, FIG. 2 is a longitudinal sectional front view of an automatic document feeder, and FIG. 3 is a longitudinal sectional side view of an automatic document feeder and an information addition device. ,
FIG. 4 is an explanatory diagram of document image and information formation. 2... Document table, 8... Image forming section, 18... Paper refeeding means, 26... Conveyance belt, 32... Information addition device, 38... Recording medium, 42... Transparent part, 43・
...recording medium moving means, 44...information selection means, 45
... Information position setting means, 46 ... Control means, a...
・Manuscript, b...information, e...recording paper. Applicant: Mita Kogyo Co., Ltd. Agent: Hideo Fujimoto, patent attorney

Claims (2)

[Claims] (1) It is equipped with a refeeding means for image composition that refeeds the recording paper after image formation to the image forming section, and the upper part of the document table is equipped with a
An endless conveyor belt is provided that conveys the original from the original document feeder to a predetermined position on the original table and discharges it to the original tray, and an information adding device is further provided to form information other than the original image on the recording paper. An image forming apparatus equipped with an automatic document feeder, wherein the information adding device is arranged in a hollow part of the endless conveyor belt, and a transparent part for reading additional information is formed in a part of the conveyor belt. and a control means for positioning the transparent portion corresponding to the information adding device in the information addition mode and positioning the transparent portion at a location away from the upper surface of the document table in the document image forming mode. Image forming device with document transport device. (2) The information adding device includes an endless recording medium to which arbitrary information can be physically attached, and a recording medium moving means for moving the recording medium in a direction perpendicular to the document feeding direction. , an information selection means for selecting arbitrary information, an information position setting means for controlling the recording medium moving means to position the arbitrarily selected information at an arbitrary position in the orthogonal direction, and the position-set information. Claim (1) comprising an information transfer means for transferring information onto recording paper.
) is an image forming apparatus equipped with an automatic document feeder.