JPH03256951A - Electrostatic recording type vertical printer - Google Patents

Abstract

PURPOSE:To perform a job for unjamming so easily without any hindrance by dividing a printer body into two parts with a paper feed passage as the border, installing a cover body being free of opening or closing, and interlocking it with a lever, then exposing a developing unit, whose top face is set down to a paper guideway, after being slid outward. CONSTITUTION:A developing unit 6, whose circular top face 6a is set down to a paper guideway, is attached to a printer body 1 equipped with both paper cassettes 3A, 3B at the upper part pushably to the front of the body 1 along a circular guide groove 2 of a body frame via each sliding plate 8 installed at both sides. On the other hand, a resist roller 12, a transfer charger 13, a fixing unit 14 or the like are installed in the body 1 after covering the front with a paper feed passage 5 as the border, and such a cover body as being free of opening or closing with a fulcrum shaft 11 at the supporting point is installed there, while the whole developing unit 6 is made so as to be exposable to the front of the body 1 via the pivoted lever 16. With this constitution, unjamming and inspection plus replacement of the developing unit are facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an electrostatic recording type vertical printer, and more particularly relates to an electrostatic recording type vertical printer that facilitates jam removal. .

(Prior art) Electrostatic recording printers using dry toner have electrostatic N! Similar to a copying machine (this is because there are parts on the paper feed path that are open for electrostatic recording writing, such as registration rollers, transfer units, fixing units, etc.), so paper jams, or vapor jams, can occur in these parts. is easy to produce.

In copiers, in order to deal with such paper jams, for example, as seen in Japanese Utility Model Application Publication No. 61-116363, the N is divided vertically into two parts with the almost horizontal paper feed path as the boundary. A so-called crocodile-type device has also been proposed, but in order to keep the installation space as small as possible, for example, as seen in Japanese Patent Application Laid-Open No. 62-234170, the paper feeding path is oriented vertically. In printers that require a large space, the paper feed cassette and development unit @1 are installed on the main body side, and the recording paper is conveyed along the paper conveyance surface on the lid side. If it is opened, the paper feeding path will be cut off near the paper feeding section, resulting in the inconvenience that the recording paper will be torn to pieces at this portion, making it even more troublesome to clear the jam.

(Problem to be solved by the invention) The present invention was made in view of such inconveniences in paper jam handling, and its purpose is to open the lid while keeping the paper feed path as continuous as possible. An object of the present invention is to provide a new electrostatic recording type vertical printer capable of appropriately handling paper jams.

(Means for Solving the Problems) That is, the present invention provides an electrostatic recording type vertical printer for achieving the above problems, in which a recording paper supply means is disposed in the upper part, and an electrostatic recording method is provided on the paper conveyance path. A developing unit with the top as a paper guide surface is slidably disposed on the main body of a vertical printer equipped with a writing means so that it can be exposed to the outside beyond the paper transport path. At the lower end, a lid that divides the main body into two with the paper transport path as a boundary is pivoted to open and close freely, and a part of the lid has a lever for pulling out the developing unit that is connected to a part of the developing unit. It is.

(Function) With this configuration, when the lid is opened to clear a jam, the top guide surface of the developing unit pulled out by the lever for taking out the developing unit 9 or the part of the paper transport path that is Since it is positioned so as to fill the area, it is possible to smoothly move the rear end of the recording paper to the lid side.
Jam disposal can be easily and without any trouble.

(Example) Therefore, the illustrated embodiment will be described below.

FIG. 1 shows an electrostatic recording type vertical printer which is an embodiment of the present invention.

In the figure, numeral 1 is the printer main body, and on the top there are 2
Two paper feed cassettes 3A and 3B are removably attached,
In addition, each cassette 3A, 3 is attached to these cassette mounting parts.
Paper feed roller 4A that feeds the recording paper in B to the paper conveyance path 5
, 4B is arranged.

Reference numeral 6 denotes a developing unit incorporating an electrostatic tram 7. This developing unit 6 is removably attached to arc-shaped sliding plates 8 provided on both sides of the developing unit 6, and the sliding plates 8 are provided on the main body frame. The unit 6 is attached so that it slides into the horizontal arcuate guide groove 2 (FIG. 2(d)) and protrudes from the front of the printer body 1, and the top surface of the case of this unit 6 is attached to the paper feed rollers 4A and 4B. It forms an arc-shaped guide surface 6a facing directly below the paper feed roller 4B, and protrudes again to guide the recording paper fed from the second paper feed roller 4B at the normal depth (Fig. 2(a)). In this state, it is configured to support the trailing edge of the recording paper from both paper feed rollers 4A and 4B (FIG. 2(d)).

On the other hand, 10 is a lid that covers the front surface of the printer main body 1 with the paper transport path 5 as a boundary; It is attached so that it can be opened and closed using a supporting shaft 1] as a fulcrum. A pair of registration rollers] 2 are supported on the lid body 10 above the paper conveyance path, and a main body 1 is supported below the lid body 10.
A transfer charger 13 is provided so as to face the electrostatic drum 7 on the side, and further below this, a fixing unit 14 and a curved guide plate 5 for reversing the recording paper to the front side are provided.

16 is a lever for pulling out the developing unit, and this lever 1
6 is pivotally supported on a part of the lid [○] with the bottle 17 as a fulcrum, and its tip is connected to the arcuate sliding plate 8 via the bottle 18.
When the cover body 10 is closed, the groove 8a is slidably attached to the groove 8a as shown in FIG. 2(a).
When the bottle 18 hits the inner depth of the bottle 18, the developing unit 6 is moved to its normal position via the sliding plate 8, and when the lid 10 is opened, as shown in FIG. 2(d). The sliding plate 8 is pulled out from the arcuate guide groove 2 by the bottle 18 that abuts the tip of the groove 8a, and the entire developing unit 6 integrated therewith is exposed to the front part of the main body 1. ing.

Note that the reference numeral 20 in the figure is a shaft provided at the lower end of the front surface of the printer main body 1 so that the recording paper can be delivered to either the paper ejection tray 22 or the paper conveyance path 23 for backside recording inside the lid 10. 2] a guide member swingably attached to 24;
2 shows a paper feed roller that feeds the recording paper discharged from the paper transport path 23 for backside recording to the paper transport path 5, and 25 is a cooling fan provided in the printer main body 1;
Reference numeral 6 indicates a fan for suctioning recording paper provided inside the lid body]0.

In the printer configured in this way, the image shown in Fig. 2 (
When the lid 10 is closed as shown in a), the tip of the lever 16 for drawing out the developing unit, which is pivotally supported at the base end or a part of the lid 10, is not connected to the sliding plate 8. Positioned at the inner end of the provided groove 8a, the sliding plate 8 attached to the bottle 18 is pushed deep into the arcuate guide groove 2, and the developing unit 6, which is integrated with the sliding plate 8, is positioned at its normal position. ing. At the same time, a registration roller 12, a transfer charger 13, and a fixing unit]4 provided on the lid 1o are also located on a predetermined paper conveyance path 5 of the printer main body 1, respectively.

Therefore, during normal record writing, the recording paper in the first paper feed cassette 3A is directly fed into the paper conveyance path 5 by the first paper feed roller 4A, and the required electrostatic record writing is performed. The recording paper sent out from the paper feed cassette 3B enters the paper conveyance path 5 via an arcuate guide surface 6a provided at the top of the case of the developing unit 60, where the required recording is also performed.

On the other hand, if a jam occurs in a part of the paper conveyance path 5, the lid body] is opened to handle the jam. As a result, the registration rollers 12, transfer charger 13, and fixing unit 14 disposed on the paper conveyance path 5 of the lid body 10,
The developing unit drawer lever 16 is separated from the paper conveyance path 5 of the printer main body together with the lid O.
As shown in Figure (b), it moves along the groove 8a of the sliding plate 8 toward its tip.

When the lid 10 is roughly opened, the paper conveyance path 5 from the registration rollers 12 to the fixing unit 4 rises significantly upwards because it is located inward from the support shaft 11, and the developing unit drawer The lever 16 is brought into contact with the tip of the bottle 18'@groove 8a to pull out the sliding plate 8 from the arcuate guide groove 2, and to project the developing unit 6 integrated with the sliding plate 8 to the front. Figure 2 (C)).

In this way, when the lid 10 is finally opened completely, the paper conveyance path 5 on the lid 0 is completely exposed with this side facing up, as shown in FIG. 2(d). Further, the sliding plate 8 pulled out from the arcuate guide groove 2 by the developing unit lever 16 completely removes the integrated developing unit 6 from inside the printer body 1 and comes between the printer body 1 and the lid 1o. The space is filled with the guide surface 6a at the top of the case.

Therefore, even if the trailing edge of the recording paper is located in one of the paper feed cassettes 3A, 3B when a jam occurs, the trailing edge of the recording paper will be removed from the developing unit during the process of opening the lid 10. Paper feed cassette 3 along the guide surface 6a at the top of the case.
The jammed recording paper can be easily removed from the paper conveyance path 5 on the 0 side.

Note that when the lid 10 is fully opened in this manner, the developing unit 6 completely escapes from inside the Bwanta body as described above, so when replacing or inspecting the developing unit 6, do not slide it in this state. It can be easily removed by releasing the engagement with the moving plate 8 and pulling it upward.

(Effects) As described above, according to the present invention, the developing unit, whose upper surface serves as a paper guide surface, is exposed to the outside beyond the paper conveyance path in the printer main body equipped with a recording paper supply means on the upper part. The printer body is equipped with a lid that divides the paper transport path into two parts, and the developer unit can be pulled out using the developing unit pull-out lever provided on the lid. Even when a plurality of recording paper supply means are installed at the top of the main body, not only can these recording papers be fed to the recording writing section using the guide surface at the top of the developing unit, but also the cover can be removed when handling a jam. When the body is opened, it is placed so as to fill the top guide surface of the pulled out developing unit or the divided part of the paper transport path, making it possible to smoothly move the rear edge of the recording paper to the lid side. As a result, jam removal can be carried out easily and without any trouble.

Moreover, when replacing or inspecting the developing unit, since the developing unit is pulled out from the printer main body when the lid is opened, it can be attached and detached very easily.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the internal structure of a printer which is an embodiment of the present invention, and FIGS. 2(a) to 2(d) are diagrams showing the lid in a closed state and in an opening process. 1... Printer main body 2... Arc-shaped guide grooves 3A, 3B... Paper feed cassettes 4A, 4B... Paper feed roller 5... Paper transport path 6... Development unit 6a...Paper guide surface 8...Sliding plate 1
0... Lid body 12... Registration roller] 4... Fixing unit

Claims (1)

[Claims] The main body of a vertical printer is equipped with a recording paper supply means on the top and an electrostatic recording writing means on the paper transport path. a lid body is pivotally supported at the lower end of the paper conveyance path of the main body so as to be able to freely open and close, dividing the main body into two with the paper conveyance path as a boundary;
An electrostatic recording type vertical printer in which a lever for pulling out a developing unit, which is connected to a part of the developing unit, is attached to a part of the lid.