JPH01231724A - Splittable image forming device - Google Patents

Abstract

PURPOSE:To improve the operability by fixing the carrying section so as to rotate following to the motion of an upper unit, thereby managing jam only through opening/closing of the upper unit of jam release recording section. CONSTITUTION:The body 2 is splitted into upper and lower sections 21, 20, where the upper unit 21 is fixed openably/closably to the lower unit 20 through a hinge 22. Carrying section 3 has one end fixed to the paper refeed section through a shaft 100 and the other end engaged with the rail member 19 and the slide member 23 of the body 2. When a trouble such as jamming occurs in an image forming section 10, the upper unit 21 is rotated around the hinge 22, then the slide member 23 slides on the rail guide 19.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a divisible image forming apparatus, specifically, for example,
This invention relates to a method for opening an information recording device such as a laser printer when recording paper is jammed.

[Conventional technology]

In a small recording device, in order to make it easier to remove the jammed paper when the recording paper jams, the device is divided into two units, an upper and lower unit, and the upper unit is lifted upward via a hinge (shell type or alligator). method) is adopted.

When attempting to add a double-sided print function or multiple print function to this type of recording device capable of single-sided printing, the ejected recording paper after single-sided printing is sent (recirculated) to the image forming unit again. It is necessary to add a new conveyance path for this purpose. In that case, in most cases, a paper refeed unit is installed at the bottom of the original recording device (hereinafter referred to as the recording unit) to refeed the recording paper to the image forming unit, and then the paper is received from the recording unit and re-feeded. A conveyance unit for delivering the paper to the recording paper receiving side of the paper refeeding unit is attached to the recording paper discharging side of the recording unit.

In a recording device configured as shown above, when handling a jam, 1. When lifting the upper unit of the recording section, the transport section gets in the way and cannot be lifted, so the transport section must be released first before lifting the upper unit.

As a result, there are various problems such as the user's operation being required in two steps, which is cumbersome, and the need for a mechanism to prevent the upper unit from being lifted without releasing the transport section in order to prevent damage to the device.

(Object of the Invention) The present invention is intended to solve such problems, and its feature lies in that the conveying section is attached so as to follow the movement of the upper unit and rotate.

〔Example〕

The image forming apparatus shown in FIG. 1, for example, a laser printer 1, includes a main body 2, a conveying section 3, and a paper refeeding section 4, and is capable of single-sided printing, double-sided printing, reversed discharge, and straight discharge. The main body 2 has a mounting opening 6 for a paper feed cassette 5,
A paper feed roller 7 that sends out the paper from the paper cassette 5 set in the mounting port 6, a paper feed path 16.17, and a registration roller 8.9 that adjusts the leading edge of the paper fed from the paper feed path 16 or 17. , image forming section 10, sensor 56, fixing roller 11, 12, switching guide 13, front/back reversing path 14, reversing paper ejection tray 15, connection port 18, and conveying section A support guide 19 is provided.

As shown in FIG. 1, the conveying section 3 includes a switching guide 25 provided facing the a word opening 18, a straight paper discharge tray 27 whose rear section 26 is rotatable, a paper feed path 28, and a switchback path. 29, sensor 57, and forward/reverse rollers 30, 31
, an auxiliary tray 32 , and a paper feed path 33 .

The paper refeeding unit 4 includes a paper feed path 34 that transports the paper fed from the paper feed path 33, and an aligning roller 3 that aligns the paper fed to the paper feed path 34 to a preparation position.
5, 36, transport rollers 37, 38 that transport the paper in the paper feed path 34, a paper feed path 39 that guides the paper sent by these transport rollers 37, 38 to the paper feed path 17, and the paper feed cassette 5. It includes a mounting opening 40 , a paper feed roller 41 that feeds the paper from the paper feed cassette 5 , and a paper feed path 42 that guides the paper fed by the paper feed roller 41 to the paper feed path 17 . Incidentally, the driving device for the switching guide 13.25 is constructed as shown in FIGS. 3 to 6. A lever 44 is attached to the rotation shaft 43 of the switching guide 13. Further, an arm 46 is attached to one end of the rotation shaft 45 of the switching guide 25, and a manual switching grip 47 is attached to the other end as shown in FIG. It is designed to rotate up and down. Incidentally, the rotational position of the switching grip 47 can be detected by a sensor (not shown). A rotation shaft is provided between the switching guide 13 and the switching guide 25, and arms 49 and 50 are provided at a predetermined angle to the rotation shaft 48. In addition, arm 49 is arm 4.
6, and the arm 50 is engageable with the tip of the lever 44. Rotation! A lever 52 biased by a spring 51 is attached to the base end of th48, and a lever 52 is attached to the base end of the solenoid 5.
When the plunger 54 is attracted by the excitation of 3, the bottle 55
pulls the lever 52 to drive the rotating shaft 48, and when the solenoid 53 is de-energized, the spring 51 returns to its original position.

Next, the operation will be explained.

(i) When reversing and discharging, rotate the switching grip 47 counterclockwise to lock the switching guide 25 in the position shown in FIG. 3. In this state, arms 46 and 49 are not engaged. In addition, solenoid 5 is also energized 6.
11 is not done. Therefore, the arm 50 does not rotate, and the switching guide 13 also does not rotate.

Therefore, the paper fed from the paper cassette 5 and printed on by the image forming section 10 is guided by the switching guide 13 to the front/back reversal path 14 and stored in the reversal paper ejection tray 15.

(100) When printing on both sides, it looks like Figure 3! In each case, when the sensor 56 detects the leading edge of the sheet printed on one side by the image forming section 10, the solenoid 53 is energized. As a result, the plunger 54 is attracted, the pin 55 is lowered, the lever 52 is rotated counterclockwise, and the rotation @48 is rotated. Therefore, the arm 50 rotates upward as shown in FIG. 4, pushes up the lever 44, and rotates the switching guide 13 counterclockwise. As a result, the front/back reversal path 14 is blocked. The sheet of paper printed on one side is then guided to the lower surface of the switching guide 13.25 and fed to the second side of the sheet feeding path. When the leading edge of the paper is detected by the sensor 57, the forward/reverse roller 31 is driven counterclockwise to convey the paper to the auxiliary tray 32 side. By the way, when the trailing edge of the paper passes the sensor 56, the solenoid 53 is deenergized after a predetermined period of time, and the switching guide 1-13 is switched to the third I.
The state will be restored. When the trailing edge of the sheet passes through the sensor 57, the forward/reverse roller 31 is driven clockwise. For this reason,
The conveyance direction of the paper is reversed and the paper is supplied to the paper feed path 33.

This paper is sent to the aligning reference by aligning rollers 35, 36 and transported. When the trailing edge of the switched back paper passes the sensor 57, the forward/reverse roller 31
stops.

The paper aligned in the paper feed path 34 is transferred to the transport roller 3
7.38, it is sent to the paper feed path 39.17 and printed on the blank paper side by the image forming section 10.

Therefore, both sides of the paper are printed, and the paper is supplied to the front/back reversal path 14 by the switching guide 3 shown in FIG.

(iii) When printing on paper that is difficult to bend such as thick paper during straight discharge, rotate the switching grip 47 clockwise. As a result, the switching guide 25 descends from the state shown in FIG. 3 to the state shown in FIG. 5.

Further, the arm 46 pushes the arm 49, and the arm 50 rotates upward. Therefore, the lever 44 is pushed by the arm 50, and the switching guide 13 rotates counterclockwise, resulting in the state shown in FIG. 5. When printing is performed in such a state, the paper printed by the image forming section 10 is guided by the lower surface of the switching guide 13 and the upper surface of the switching guide 25 and is discharged to the straight paper discharge tray 27. The rear end of the ejected paper is supported by the communication port 18.

In the present invention, the main body 2 is a lower unit 2 as shown in FIG.
0 and an upper unit 21, and the upper unit 21 is attached via a hinge 22 to the lower unit 20 so as to be openable and closable. Further, as shown in FIG. 2, one end of the conveyance section 3 is rotatably attached to the paper refeeding section 4 via a shaft 100, and the other end is engaged with the rail-like member 19 of the main body 2 and the slide member 23. It is supported by Therefore, when a problem such as a jam occurs in the image forming section 10, when the upper unit 21 is rotated around the hinge 22 as shown in FIG. At this time, the slide member 23 slides on one rail-like guide.

[Other Examples]

In the above embodiments, the case where electrophotographic recording was used as the image forming section was mainly explained, but the recording section of the present invention is not limited to electrophotographic recording, but may also be used for other recording such as electrostatic recording, thermal recording, thermal transfer recording, etc. Of course, the present invention can also be applied to an i1 type recording device.

In the above embodiment, a paper refeeding section for double-sided printing is added to a recording device capable of single-sided printing, but even when a paper refeeding section for multiplex printing is added, it is possible to perform two-sided printing and multiplex printing. The present invention can also be applied to a recording apparatus that is equipped with a paper refeeding section that has two functions.

Further, the slide member and the rail-like member may be oppositely attached, that is, the slide member may be attached to the main body and the rail-like member may be attached to the i12 sending section.

As explained above, for example, in an image forming (recording) device that has a recording unit that has a shell-type jam clearing method, when paper is ejected from the recording unit to the refeeding unit for double-sided printing 1 or multiple printing. The conveyance unit that receives and sends out sheet material (recording paper) is attached to the recording unit by a hinge and an engaging part consisting of a slide member and a rail-like member, so that when a jam is cleared, the operator can open and close the upper unit of the recording unit. This eliminates the need to open the transport section before opening the upper unit, further improving operability and eliminating the risk of damage to the device if the upper unit is accidentally opened without opening the transport section. be able to.

〔Effect of the invention〕

Since the image forming apparatus according to the present invention is as described above, it has the advantage of excellent operability.

[Brief explanation of the drawing]

1 and 2 are embodiments of the present invention, and FIGS. 3 to 6 are detailed views of the switching guide. 2 is a main body, 3 is a conveyance section, 4 is a paper refeeding section, 10 is an image forming section, 22 and 100 are hinges, 19 is a conveyance section rail-like member, and 23 is a conveyance section slide member. Area 3, Tusho-eup, 4 animals]

Claims (1)

[Claims] (1) a recording section including an image forming section; a recording section for feeding the recording paper discharged from the recording section, on which the first image has been recorded, to the recording section again to record a second image; a recording paper refeeding section provided at the bottom of the unit; a recording paper transport section for receiving the recording paper on which the first image has been recorded discharged from the recording section and sending it to the paper refeeding section; and a recording device having two parts: an upper unit that is opened upward around a rotating shaft disposed at the recording section or the paper ejection side of the recording section, and a lower unit that is fixed. A recording paper transport section is rotatably attached to the recording paper refeeding section about a rotation axis provided in the recording paper refeeding section, and the recording paper transporting section is movable with respect to the upper unit. A divisible image forming apparatus, wherein the recording paper transport section rotates about the rotation axis while relatively moving when the upper unit is opened.