JPH01191866A - Digital copying machine - Google Patents

Abstract

PURPOSE:To easily execute a jam processing of a recording form by attaching a scanner part and a light source lamp, etc., to the upper housing, supporting the upper housing with a hinge so as to be freely turnable by the lower housing and also, allowing one side face of the lower housing to be freely openable and closeable. CONSTITUTION:A scanner part 6 and a light source lamp 8, mirrors 9-11, a lens 12, a prism 13, a dichroic mirror 14, CCDs 15, 16, etc., are provided on the upper housing 30, and a feed paper device consisting of a feed paper cassette 22, a feed paper roller, etc., a photosensitive body 1, etc., are provided on the lower housing 31. In this case, the photosensitive body 1, a cleaning device 2, an electrifier 3 and a developing device 5 are contained in the cartridge, and drawn up to the upper part together with the upper housing, and thereafter, can be further drawn out forward from the upper housing. The housing 30 can turn upward by using a hinge supported by the housing 31 as the center of turning. Also, the housing 31 can also be opened by turning it downward. In such a way, a recording form which has been jammed in the inside can be taken out.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention photoelectrically converts image information obtained by scanning and exposing a document into an electrical signal, and then converts it back into optical information and transfers it onto a photoreceptor. This invention relates to a digital copying machine that uses scanning exposure.

[Conventional technology] Light is irradiated onto the document while scanning the light source, and the reflected light is captured by a CCD.
A digital copying machine is known that forms an image on a photoreceptor, converts image information obtained by COD into digital image information, modulates a laser beam based on the digital image information, and scans and exposes a photoreceptor.

Conventionally, in such digital copying machines, the upper housing is rotatably supported by the lower housing, and one side of the lower housing is also supported by the lower housing. WU was not known to be closed.

[Problems to be Solved by the Invention] In the above-mentioned prior art, in the case where only one side of the lower housing can be opened and closed, it is difficult to take out the recording paper from the side of the machine when the recording paper becomes jammed. Therefore, it was troublesome to dispose of jams.

If the lower casing is rotatable and the sides of the lower casing are not openable, the upper casing must be rotated to a large angle in order to clear the jam.

Then, the stroke of the spring for balancing the Pffi of the equipment attached to the upper PIl housing becomes large, resulting in high cost. The present invention was made to solve the above-mentioned problems, and it is possible to easily take out the recording paper stuck inside the machine.
The purpose is to provide a low-cost digital copying machine.

[Means for solving the problem] In a digital copying machine, a scanner unit and a photoreceptor are attached to an upper housing, a paper feed device is supported on a lower housing,
The upper casing is rotatably supported by the lower casing with a hinge, and one side of the lower casing can be opened and closed.

[Action 1: When the upper case is opened, most of the distribution paper path is released,
At this time, by opening the side surface of the lower case, the recording paper jammed inside the machine can be easily removed in the direction of the side surface of the lower case. The opening angle of the upper housing at that time may be relatively small.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing the main parts of a digital copying machine to which the present invention is applied. A toner image is formed while rotating in the direction of the arrow. That is, the surface of the photoreceptor 1 cleaned by the cleaning device 2 is uniformly charged by the charger 3, and is irradiated with the laser exposure 4 described above so that an electrostatic latent image corresponding to the toner image is formed. Toner is deposited by the developer IA 5 in accordance with the electrostatic latent image formed. The laser exposure point is main-scanned in the direction perpendicular to the plane of the paper and is combined with @1 scanning by drum rotation to form an electrostatic latent image corresponding to the image on the surface of the photoreceptor. Image information for changing the laser exposure is is obtained by the scanner section 6. That is, light is irradiated from a light source lamp 8 onto an original placed on an original platen 7 made of a glass plate, and the light reflected by the original is reflected by mirrors 9, 10, and 11, passes through a lens 12, and enters a prism 13. . The red light passing through the dichroic mirror 14 provided at the center of the prism 13 forms a linear image on the CCD 15, and the cyan light reflected by the dichroic mirror 14 forms a linear image on the CCD 16.
A linear image is formed on the image, and electric signals obtained from C0D15.16 make it possible to identify the red, blue, and black colors of the document, and masking with markers and the like is performed. Details regarding this are disclosed in Japanese Patent Application No. 62-16554. The light source 8 and the mirror 9 are integrally sent to the right from the illustrated home position, and the mirrors 10 and 11 are also integrally sent to the right at half the speed of the light source. In this way, all image information of the original is sequentially input to the C0D 15°16. C0D
15 and 16 output linear image information as a serial electrical signal, and this electrical signal is converted into digital image information by an image processing device. A laser beam modulated with the obtained digital image information is reflected by a rotating polygon mirror (not shown), then reflected by a mirror 17, and passed through a cylindrical force lens 18 for laser exposure 4.

The toner image thus formed on the surface of the photoreceptor is transferred by electrostatic force by a transfer device 19 onto a recording paper fed by a paper feeder. The transferred recording paper is separated by electrostatic force by a separator 20, and then sent to a heat fixing device rA21, where the image is fixed on the recording paper. The paper feed device includes a paper feed cassette 22 that can be pulled out from the main body, a paper feed roller 23, feed rollers 24, 24..., and a guide 2.
The recording paper in the paper feed cassette is pressed against the paper feed roller 523 by the spring 26, and is sent out from the paper feed cassette by the paper feed roller 523, and is then moved to the feed rollers 24, 24, etc. ...and guide 25°25...
. . , passes through the photoreceptor 1 and the heat fixing device 21, and is discharged onto the paper discharge table 27. The light source lamp 8 and the heat fixing device 111i21 are cooled by a sirocco fan 28, which sucks hot air near the light source lamp 8 and the heat fixing device 21 as shown in the figure and discharges it out of the main body. ii! The il image processing board and the exposure control board are housed in a board case 29 and placed below the scanner section 6. The above-mentioned equipment is housed in the upper case 30J3 and the lower case 31, and the upper i! 1
The lsfZ suspension 30 is connected to the lower Plsli body via a hinge 32 so as to be freely openable. That is, the upper housing 30 and the lower housing 31 constitute a so-called clamshell.

Note that the photoreceptor 1, cleaning device 2, charger 3, and developing device kt5 are housed in a cartridge, and the cartridge is pulled upward together with the upper housing 30, but after that, it can be further pulled out forward from the upper housing. ing. Next, the features of the present invention will be explained with reference to FIG. In this embodiment, the upper FA housing 30 can be rotated upwardly as shown in the figure around the hinge supported by the lower housing, and the side surface 33 of the lower housing can also be rotated downward to open. be able to. In this state, the recording paper jammed inside can be easily removed.

[Effect of the Invention J As explained above, in the digital copying machine of the present invention, by rotating the upper housing, most of the upper part of the recording paper path can be released and the side of the lower stopper can be opened. Recording paper jams can be easily cleared. Furthermore, since the rotation angle of the upper housing required for this purpose is small, the manufacturing cost of the machine is reduced. With the type that pulls out the photoreceptor cartridge, there is no risk of scratching the photoreceptor when it is pulled out.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the main parts of a digital copying machine to which the present invention is applied, and FIG. 2 is a perspective view showing the digital copying machine with its upper and lower casing sides opened. be. 1... Photoreceptor, 2... Cleaning device δ, 3...
・Charger, 4...Laser exposure, 5...Developing device, 6
. . . Scanner section, 7 . . . Original table, 8 . . . Light source lamp, 9.10.11 . .16...CCD, 17...Mirror, 18
...Cylindrical lens, 19...Transfer device, 20
Separator, 21 Heat fixing device, 22 Paper feed cassette, 23 Paper feed roller, 24 Feed roller, 25 Guide, 26 Spring, 27 ... Paper discharge table, 28 ... Sirocco fan, 29 ... Board case, 30 ... Upper case, 31 ... Lower case, 3
2... Hinge, 33... Side.

Claims (1)

[Claims] The scanner unit and photoconductor are attached to the upper housing, the paper feeder is supported on the lower housing, the upper housing is rotatably supported on the lower housing with a hinge, and one side of the lower housing can be opened and closed. A digital copying machine characterized by the following.