JPS60247235A - Copying machine - Google Patents

Abstract

PURPOSE:To facilitate an operation in the state of copying and the adjustment of each device and to reduce the size of a copying machine by constituting the frame of said machine of a lower box body and an openable and closable upper box body, providing a photosensitive belt in the upper for body and disposing an electrifier and exposing device on the lower side thereof. CONSTITUTION:The frame A of the copying machine is constituted of the lower box body 2 and the upper box body 1 openable and closable relative to said body. The photosensitive belt 3 is provided in the body 1 and the electrifier 8, a selfoc lens 9 and an exposing lamp 10 are provided integrally to the lower side thereof so as to scan in an arrow B direction with respect to the belt 3. Platen glass 11 is provided in the lowermost part of the body 1. On the other hand, an original imposing plate 13 is energized upward by a coil spring 14 and is provided into the recess 12 of the body 2. The toner image formed on the belt 3 is transferred onto paper (b) when the paper in the paper feed tray 18 in the lowermost part of the body 2 is conveyed and passes between a transfer corotron 16 and a roller 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying machine in which a document is placed face up and copies are made.

[Prior art]

Conventionally, in a copying machine that places a document face up and copies it, an optical device such as a reflective mirror is installed between the photosensitive belt or photosensitive drum on which an electrostatic latent image of the document is formed. The reflected light from the document exposes the photosensitive belt or photosensitive drum through a reflective mirror or the like, and an electrostatic latent image of the document is formed on the exposed surface. A developing device and a transfer device are arranged around the sensitive material belt or the photosensitive drum,
Further, a fixing device, a paper feeding device, etc. are arranged around the image forming apparatus, and each of these devices operates continuously to perform copying. In addition, the document placement device, which places documents face up, has a sliding structure that is integrated with the platen section. When setting documents, the document placement device and the platen section must be pulled out of the copying machine. The structure was such that the platen section was opened, the document was placed on the document placement device, and then the document was slid into the copying machine, and the platen section was closed and set.

However, in the conventional structure described above, the original and the exposure surface of the photosensitive material heald or photosensitive drum are separated from each other due to the arrangement of each device. Space was needed. For example, a scanning type optical device has a structure with two movable mirrors, and a fixed full exposure type optical device has a structure with two large mirrors. The printers have become larger and more complex, making it difficult to operate or inspect them during copying.

[Purpose of the invention]

The present invention was made in order to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide a copying machine having a small and compact structure, which allows easy operation during copying, and allows easy inspection and adjustment of each device. This is what I did.

[Structure of the invention]

In order to achieve the above object, the present invention comprises a copying machine frame consisting of a lower case and an openable/closeable upper case, and furthermore, a photosensitive material heald is disposed inside the upper case, and the underside of the photosensitive material heald is charged. By integrating the device and the exposure device, and further arranging a platen glass at the bottom of the upper case so as to be in contact with the document on the document table placed inside the upper case, the above-mentioned charging device, etc. The copying machine is configured to scan in parallel to the photosensitive material heald, thereby making the structure of the copying machine compact and easy to operate, inspect, and adjust.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In the figure, (A) is a copying machine frame, which is composed of an upper case ill and a lower case (2). Upper box (
1) is pivotally supported by a fulcrum (not shown) on the lower case (2), so that the upper case +11 can be opened and closed. '' Inside the two-part box (1), sensitive material belts 1 to (3) are arranged at the top, and the sensitive material belt (3) has rollers (4), rollers (5), and rollers. (4)
and rollers (6) in the horizontal direction, and the rollers (6)
5) and rollers (7) along the boundary between the upper box (11) and the lower box (2).

A charging device (8), a SELFOC lens (9) and an exposure lamp 00) are integrated under the sensitive material belt (3) which is stretched horizontally between rollers (4) and rollers (6). It is set up. The charging device (8) and the like are configured to scan in parallel to the sensitive material heald (3) in the direction of arrow (B) by a device not shown. Furthermore, a platen glass (11) is disposed at the bottom of the upper case (1).

On the other hand, the platen glass (
A recess (12) is formed below the gate (11).
2) has a document placement table (on which the document + al is placed facing upwards).
13) and a compression coil spring (14) that urges the document mounting table (13) upward. Also, the upper box (1
) and the lower box (2) are equipped with the roller (5) on the pivot side.
), a developing device (15) is disposed opposite to the roller (7).
A transfer corotron (16) is disposed opposite to the transfer corotron (16). The developing device (15) is provided with a developing roll (17) which is located close to the photosensitive material heald (3) and performs development by bringing the developer into contact with the photosensitive material belt (3).

In addition, a paper feed tray (18) is located at the bottom of the lower case (2).
The same paper feed tray (18) and the above recess (12) are arranged.
The paper discharge section (19) is located in the gap between the frame (12a) and
). Therefore, the paper feed tray (18
) is sent out to the right in the drawing by the paper feed roller (20), and is fed to the paper feed shoe 1- (21), the curved paper feed shoe 1- (22), and the paper feed chute (23).
) and transfer corotron (16) and roller (7).
), the toner image formed on the sensitive material heald (3) is transferred. After that, the paper fbl is guided by the paper feed shoe) (24) and transferred to the fixing device (25).
After the fixing is performed, the discharge roller (26)
The paper is discharged to a paper discharge section (19) by the following steps. In addition, the size of the copying machine frame (A) has been reduced to improve operability.
In order to improve functionality, the paper ejection section (19
) is opened on the opening side of the lower case (2), so that the paper (bl) is transported over the transfer corotron (16) from the right side to the left side in the drawing. (3) is configured to move in the direction of arrow (C) to perform development, etc.

Incidentally, the developing device (15) is also provided with a cleaning device for cleaning the photosensitive material edges 3).

〔Effect of the invention〕

As explained above, according to the present invention, the photosensitive material belt, the charging device, and the exposure device are arranged above the original, so optical devices such as reflective mirrors are not required, and the copying machine can be made smaller, and in particular, the height can be reduced. It is easy to install. In addition, since the copying machine frame is made up of an upper case and a lower case, and the upper case can be opened and closed, the copying machine is easy to operate, and each device can be inspected and adjusted easily. effective.

[Brief explanation of the drawing]

The figure is a side view of one embodiment of the present invention. (1) Second upper box (2): Lower box (3): Sensitive material heald +41. [5), +6), +71: Roller (8
1: Obi'l outfit! +91: Selfo Cleanse GO
) : i-light lamp (11) Nibraten glass (1
2) : Concave part (13) : Original table (14) : Compression coil spring (15) : Developing device (16) : Transfer corotron (
17): Developing roll (1B): Paper feed tray (19)
): Paper ejection section (20): Paper feed roller (21), (
22), (23): Paper feed chute (24): Paper feed chute (25): Fixing device (26): Ejection roller (A): Copy machine frame (a): Original (b): Paper patent applicant Fuji Xerox Corporation Agent Masu Kodo (and 1 other person)

Claims (1)

[Claims] 1. In a copying machine that performs copying by placing a document facing upward on a document table disposed inside the copying machine, the copying machine frame is attached to a lower case and an upper case that can be opened and closed to the lower case. A light-sensitive material belt is disposed inside the upper case, a charging device and an exposure device for scanning parallel to the light-sensitive material belt are integrally provided below the light-sensitive material belt, and a A copying machine characterized in that a platen glass is disposed at a lower part of the case so as to be in contact with a document placed on the document table provided in the lower case.