JPH0680455B2 - Electronic copier - Google Patents

Description

The present invention relates to an electronic copying machine provided with a handle for carrying a copying machine body.

(B) Prior Art An electronic copying machine which is compact and lightweight so as to be portable is introduced in Japanese Patent Laid-Open Nos. 57-6858 and 58-130345. However, none of the documents described in these publications are of a type in which the platen moves with respect to the main body of the copying machine during the copying operation, so it is necessary to prevent runaway of the platen during transportation of the main body of the copying machine. There is no nature.

(C) Object of the Invention The present invention is intended to provide a portable electronic copying machine. Another object of the present invention is to provide an electronic copying machine of the type in which the platen moves with respect to the main body of the copying machine so that the platen does not run away even if it is carried around so that the surface of the platen hangs down. It is a thing. Furthermore,
It is an object of the present invention to provide an electronic copying machine which is devised so that even if this runaway preventing means is provided, it does not impair the original operability of copying operation.

(D) Structure of the Invention The present invention provides a copying machine main body, a handle provided on one side of the copying machine main body and capable of holding the copying machine main body in a suspended state, and a handle provided on a horizontal portion of the copying machine main body. Side transfer position, which is the end position on the side of the handle, and a second transfer position, which is the end position on the opposite side of the handle, and moves horizontally between the first transfer position and the second transfer position during non-copying operation. A portable electronic copying machine comprising: a document table that stops at a predetermined position between the transfer positions; and locking means that prohibits the document table from running downward from the predetermined position when the copying machine body hangs down. In order to achieve the above-mentioned object, the lock means is a lock piece provided on the main body of the copying machine in the moving path of the document table and a lock claw provided on the document table that engages with the lock piece at the predetermined position. At the start of the copy operation , A movement that abuts the lock piece during movement of the document table from the predetermined position to the first transfer position and allows the lock piece to move from the prohibited state prohibiting the runaway toward the second transfer position. The manuscript table is provided with a first engaging portion that is in an allowable state, and in the direction in which the lock piece is abutted against the lock piece during movement of the manuscript table from the predetermined position to the second transfer position, the runaway is prohibited. A second engaging portion to be moved is provided on the document table, and when the document table returns to a predetermined position, the lock means is in a runaway prohibition state.

(E) Embodiment FIG. 1 is a schematic sectional view of an electronic copying machine according to the present invention.
2 to 6 are operation explanatory views in different modes.

The copying machine shown in FIG. 1 includes a copying machine main body (1), a document table (2) and a protective cover (3) provided on the copying machine main body so as to be movable in the horizontal direction of the copying machine main body. The copying machine main body (1) is provided with a paper feed cassette (4) that is set up so that it can appear and disappear.

Since the internal structure of the copying machine main body (1) is known except for the constituent elements of the locking means described later, its structure will be briefly described below. The copy paper (P) in the paper feed roller (4) is urged upward during operation and is pushed up by the push-up roller (5) and the paper feed cassette (6).
Only the top one is pushed through the guide (7) and the registration rollers (8) and (9) to the position where it is stopped by the limiter (10), and waits for the transfer timing to arrive at that position. . When a copy start switch (not shown) is operated, the document table (2) is immediately sent to the right end point position (first transfer position) (I) together with the protective cover (3), and then the left end point position (second transfer position). ) (II), the copying operation is executed in the process of being transferred to (II), and then the original home position is restored. By the way, during the copying operation, the original image is transferred and fixed on the copy paper (P) in the main body (1) of the copying machine according to the following sequence. That is, by operating the copy start switch described above, the photosensitive drum (1
1) starts rotating in the direction of the arrow (counterclockwise) in the figure, the charger (12) applies a uniform charge to the surface of the photoconductor drum (11), and the exposure unit (13) follows the light and shade of the original. An electrostatic latent image is formed on the photosensitive drum (11), and the developing means (14)
Toner develops the electrostatic latent image, and then the transfer means (15) transfers the image on the photosensitive drum (11) onto the copy paper (P) which has passed through the limiter (10). The copied copy paper (P) is separated from the photoconductor drum (11) by the separation claw (16) and is conveyed to the fixing means (18) by the conveying means (17) and fixed by the fixing means. (P) is the discharge tray (19)
Is discharged toward. This copying machine main body (1) has a handle (21) fixedly mounted on one side surface (1a) having an opening (20) through which the paper feeding cassette (4) appears and retracts, and the other side surface (1).
b) Hold the handle (21) on top of the main body of the copier (1)
It is equipped with a cushion (22) for protection when it is suspended and temporarily placed on the ground. The bottom surface (1d) facing the flat surface (1c) has legs (23) at four corners.

The manuscript table (2) is supported by a sliding body (not shown) such as an archide for the main body (1) of the copying machine, and is attached so as to be movable in the left and right directions in the figure. Copier body (1) on either or both of the front and back sides
The lock means (described later) that operates together with the lock piece of FIG. The protective cover (3) protects the original on the original table (2) from above, and is attached to the original table (2) rotatably, though not shown so that the original can be easily attached and detached.

Next, the structure and operation of the locking means 30 will be described with reference to FIGS.
It will be described with reference to the drawings. FIG. 2 is a cross-sectional view of the home position where the document table (2) is located in the center of the copying machine main body (1). Below, FIG. 3 shows the first transfer position (copy start point), and FIG. FIG. 5 is a cross-sectional view at the mid-copy position, FIG. 5 is the second transfer position (copy end point), and FIG.

The locking means (30A) on the copying machine body (1) side is a bracket (31) fixed to the inner surface of the cabinet (24) of the copying machine body (1) and an opening (25) in the casing (24).
A lock piece (32) having a protrusion (32a) facing the lock piece (32) and a flat surface of the bracket (31) that is fixed to the lock piece (32) and is biased to push the lock piece (32) upward. (31a) A leaf spring (33) that can be slidably contacted with the first and second guides (34) (35) fixed to the cabinet (24).
It has and. The lock piece (32) collides with the first guide (34) in addition to the protrusion (32a), and the first guide (34).
The first slope (32b) and the first flat surface (32
c) and are provided on the right side of the protrusion (32a), and the second
A second inclined surface portion (32d) and a second flat surface portion (32e) that abut against the guide (35) and slide into the lower surface of the second guide (35) are provided on the left side of the protrusion (32a).

On the other hand, the locking means (30B) on the side of the document table (2) is supported by the shaft (36) on the document table (2) and its tip portion (37a) has a stepped portion (2a) under its own weight as shown in FIG. Is formed on the left side of the inner surface of the document table (2) so as to engage with the left side surface of the projection (32a) of the lock piece (32) and the lock claw (37) configured to be engaged with the lock claw (37). A second engaging portion (2c) formed on the right side of the inner surface of the document table (2) so as to engage with the first engaging portion (2b) and the right side surface of the protrusion (32a) of the lock piece (32). ) And.

As shown in FIG. 2, when the document table (2) is at the home position located in the center of the copying machine body (1), the lock claw (37) is arranged on the right side of the lock piece (32).
Even if the copy machine body (1) is hung down by holding the handle (21) and the document table (2) is going to hang down by its own weight, the side wall (37b) of the lock claw (37) is the protrusion of the lock piece (32). It collides with (32a), and this protrusion (32a) makes contact with the second guide (3
Since it collides with 5), the hanging of the platen (2) (movement to the left in FIG. 2) is prevented. On the other hand, when the platen (2) starts moving toward the first transfer position in response to the start command of the copying operation, the lock claw (37) moves to the right side together with the platen (2) regardless of the lock piece (32). Moving.

The movement of the document table (2) to the right advances and the first transfer position (third position)
When it reaches just before (the position in the figure), the first engaging portion (2b) of the document table (2) engages with the protrusion (32a) of the lock piece (32) and moves the lock piece to the right as well. Like At this time, the first and second inclined surface portions (32b) (32d) of the lock piece (32) come into contact with the first and second guides (34) (35), respectively, so that the lock piece (32a) is a leaf spring ( The leaf spring (33) is urged against the elastic force of 33), that is, the leaf spring (33) is sunk downward while being spread. Then, at the first transfer position, as shown in the drawing, the first and second flat surface portions (32c) (32e) of the lock piece (32) slide into the inner surfaces of the first and second guides (34) (35), respectively, and are projected. (32a) will fall downward from the state shown in FIG. 1 by an amount corresponding to the step (Q).

Next, the copy operation starts and the platen (2) moves toward the second transfer position. At this time, since the protrusion (32a) of the lock piece (32) is in the lower position, the state shown in FIG. As shown in, the lock claw (37) is passed unconditionally without engaging it. Then, when the position immediately before the second transfer position (the position shown in FIG. 4) is reached, the second engagement portion (2c) of the document table (2) engages with the protrusion (32a) of the lock piece (32). The lock piece (32) is also moved to the left. At this time, lock pieces (3
2) floats upward due to the restoring force of the leaf spring (33), and when the document table (2) reaches the second transfer position (the position shown in FIG. 5), the lock piece (32) returns to its original position. To do. After that, when the platen (2) moves from the second transfer position toward the home position, the locking claw (37) tilts the locking piece (32) immediately before the home position as shown in FIG. Surface (37b)
Clash with. Then, the lock claw (37) rotates clockwise around the shaft (36) against the weight of the lock claw (37) to get over the protrusion (32a), and then at the home position, as shown in FIG. (37) returns to the original position (position in FIG. 2).

7 and 8 show an embodiment for further ensuring the engagement between the lock piece and the lock claw, and FIG. 7 shows the lock piece (40).
By engaging the key (42) provided on the right side of the protrusion (41) with the corresponding key hole (44) of the lock claw (43), FIG. 8 corresponds to this key (45). By engaging each with the corresponding stepped portion (47) of the locking claw (46), it is difficult for the locking claw to come off from the protrusion of the locking piece due to vibration during transportation. Further, a spring (not shown) for urging the locking claw in a counterclockwise direction may be additionally provided for further securing.

(F) Effects of the Invention Since the electronic copying machine of the present invention is configured as described above, it has the following various effects. That is, (a) the electronic copying machine can be carried with one hand, (b) since it is an automatic lock, it is possible to prevent an accident in which the platen is damaged due to forgetting the lock, and (c) the platen moves first. By not locking the direction, abnormal locking due to a locking failure does not occur, and (d) even if a runaway prevention means is provided, it does not hinder the original operability.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an embodiment of the present invention, FIG.
FIG. 3, FIG. 4, FIG. 5, and FIG. 6 are operation explanatory views in different operation modes, and FIG. 7 and FIG. 8 are main-part sectional views showing other embodiments. Explanation of main symbols (1) …… Copier body, (2) …… Manuscript platen, (21) ……
Handle, ( 30 ) …… Lock means, (32) …… Lock piece, (33) …… Elastic body, (31) …… Bracket, (34)
(35) …… First and second guides, (2b) (2c) …… First,
2nd engaging part, (37) ...... Lock piece.

Claims (1)

[Claims] 1. A copying machine main body, a handle provided on one side of the copying machine main body and capable of holding the copying machine main body in a suspended state, provided at a horizontal portion of the copying machine main body, at an end point position on the handle side. It moves horizontally between a certain first transfer position and a second transfer position which is an end position of the opposite position on the handle side, and between the first transfer position and the second transfer position during a non-copying operation. A portable electronic copying machine, comprising: a document table that stops at a predetermined position; and locking means that prohibits the document table from running downward from the predetermined position when the copying machine body hangs down. Includes a lock piece provided on the main body of the copying machine in the middle of the movement path of the document table and a lock claw provided on the document table that engages with the lock piece at the predetermined position. First from the predetermined position
The first engaging portion is brought into contact with the lock piece during movement to the transfer position to bring the lock piece into a movement-permitted state that allows movement in the second transfer-position direction from the prohibition state that prohibits the runaway. The document table has a second engaging portion that is provided on the table and abuts on the lock piece to move the lock piece in the direction in which the runaway is prohibited during movement of the document table from the predetermined position to the second transfer position. An electronic copying machine provided, wherein the lock means is in a runaway prohibited state when the document table returns to a predetermined position.