JPS582896B2 - Renzokushisetsutokikou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous paper setting mechanism for a continuous strip-shaped printed matter drying device.

Recently, electrophotographic devices based on photocharging electrophotography have been developed.

This device is capable of high-speed continuous printing of information with complex shapes, and can also be used as a kanji line printer.

An object of the present invention is to provide a mechanism for simply and reliably setting printed matter to be dried in a drying chamber of a drying device in such a printing apparatus.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 schematically shows a printing device based on photocharging electrophotography to which the present invention is applied, in which 10 is a photosensitive drum whose surface is coated with a photoconductive film, and 11 is a photosensitive drum whose surface is coated with a photoconductive film. or a negatively charged charger; 12 is a light source that outputs recorded information as a light image; for example, a cathode ray tube; 13, an electrostatic image formed on the photosensitive drum 10 in response to the light image from the light source is charged with colored particles; Developing devices 14a and 14b for forming a visible powder image by developing the powder mainly with a magnetic brush 13';
15 is a tractor for feeding continuous recording paper, 15 is a corona discharger for promoting transfer, which transfers the visible powder image formed on the photosensitive drum onto the continuous recording paper 32 that comes into contact with the photosensitive drum; 16
Reference numeral 17 denotes a static eliminator that removes the electrostatically formed charge remaining on the photosensitive drum, and 17 a cleaner that cleans the powder image remaining on the photosensitive drum using a rotating brush having soft bristles planted around its circumference.

After the visible powder image is transferred through the above-described charging-exposure-development-transfer process, the continuous recording paper is sent to a heat fixing section by tractors 14a and 14b.

That is, the moist continuous paper 32 on which information has been recorded is inserted into the drying chamber 36 of the drying device 34 through its entrance slit 37.
It is sent as shown by arrow C from .

Then, the drying material is dried while being moved in contact with the periphery of a substantially drum-shaped heater 40, which is composed of a heater unit 38 having an arcuate cross section, and which is disposed within the drying chamber 36.
The drying process is finally completed by being heated and compressed between a pair of rollers 44, 44' arranged at the outlet 42, and the material is drawn out of the chamber as shown by arrow E.

When drying the continuous paper 32 using the drying device 34 described above, as a preparatory step for its operation, the continuous paper 32 is introduced into the chamber 36, wound around the drum-shaped heater 40, and the rollers 44, Although it is necessary to pull the drum 40 out of the chamber 36 from between 44' and 44', since the drying device is sealed and the size of the drum 40 is large, a mechanism is required to efficiently carry out the above-mentioned printing process.

The present invention provides a mechanism that meets this need, and will be described below.

As shown in FIG. 2, in the drum-shaped heater 40, both ends of the heater unit 38 are fixed by end plates 46, and a drum support shaft 46 is attached to the central boss portion 46' of the end plate 46.
8 is inserted through the shaft 48, and both ends of the shaft 48 are fixed to a shaft support frame 50.

On the outside of both end plates 46 of the drum-shaped heater 40 constructed in this way, chain guide foils 5 are arranged in parallel with the end plates 46.
2 is arranged, and its central boss portion 52' is fixed to the shaft 48.

A chain 5 is placed around this foil 52 as shown in FIG.
4 is wound.

An annular guide rail 56 is fixed around the foil 52,
This rail 56 connects each link 57 of the chain 54 to the pin 5.
protruding into the recess formed by 8 (see Figure 4);
In this way, the chain 54 is slidably guided without coming off the rail 56.

As shown in FIGS. 2 and 3, chain guide rails 62 are formed on both end surfaces of the upper heating roller 44, and the chain 5
4 is guided by this rail 62 as in the case shown in FIG.

The chain 54 meshes with a sprocket 64 located at the bottom of the drying chamber 36.

A shaft 66 supporting this sprocket 64 is connected to a motor (not shown), and by rotating the motor, the chain 54 is driven in the direction F in FIG. 3.

The lower heating roller 44' that contacts the heating roller 44 is
It has a structure that can swing in the direction G shown in FIG.

In the preparation process of the drying device, this roller 44' is used as the third roller.
The position shown by the solid line in the figure is taken, and during the drying process, the position shown by the two-dot chain line is taken, and the printed matter 32' is heated and compressed between it and the upper roller 44.

As shown in FIG. 2, between the pair of chains 54 is a continuous paper 32 to be introduced into the drying chamber 36 at the start of operation.
A rod 68 for gripping the starting end of the rod is stretched.

As shown in detail in FIGS. 5 and 6, both ends of the rond 68 are secured to the connecting link 57 of the chain 54 by bolts 70 and L-shaped members 72.

At both ends of this rod 68 are clamp pieces 7 for holding the starting end of the continuous paper 32 to be introduced into the drying chamber 36.
4 is provided.

The operation of the continuous paper setting mechanism according to the present invention explained above will be explained below.

In order to introduce the continuous paper 32 into the chamber 36 and set it around the drum-shaped heater 40, first, the starting end of the continuous paper 32 to be dried is placed at the entrance 3 of the chamber as shown in FIG.
8 into the chamber and held by the clamp piece 74 of the iron 68.

Next, when a driving force is applied to the shaft 66 from a driving source (not shown), the chain 54 is moved by the sprocket 64 in the direction of arrow F.

At this time, each link 57 of the chain 54 is guided without shifting by the rail 56 on the foil 52 and the rail 62 on the roller 44.

As the sprocket 64 continues to be driven in this manner, the rod 6 that holds the starting end of the continuous paper 32
8 moves sequentially as shown in Q1, Q2, Q3, and Q4 in FIG. 7, and returns to the initial position P.

At this time, the continuous paper 32 is
When the leading end of the roller 44' is removed and the roller 44' is returned to the operating position as shown in FIG. 8, the setting of the continuous paper 32 is completed and operation of the printing apparatus as described with reference to FIG. 1 can begin.

As described above, according to the present invention, continuous paper can be easily and reliably set on the drum-shaped heater in the drying chamber.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a printing device in which the continuous paper setting mechanism of the present invention can be used, FIG. 2 is a sectional view of the printed matter setting mechanism of the present invention schematically shown along the line The figure is a view taken along the line I-1 in Figure 2, Figure 4 is a detailed view of the P part in Figure 2, Figure 5 is a detailed view of the printed matter gripping rod in Figure 2, and Figure 6 is a detailed view of the printed matter gripping rod in Figure 2.
The figure is a view taken in the Q direction of FIG. 5, and FIGS. 7 and 8 are schematic perspective views illustrating the operation of the printed matter setting mechanism of the present invention. 32... Continuous paper, 36... Drying chamber, 37... Chamber inlet, 40... Drum-shaped heater, 52... Chain guide foil, 54... Chain, 68... Printed matter gripping rod.

Claims (1)

[Claims] 1 A substantially drum-shaped heater is arranged in a drying chamber having an inlet and an outlet for the continuous paper to be dried, and the continuous paper continuously introduced into said chamber is brought into contact with the peripheral wall of said heater. In a drying device for continuous paper that dries continuous paper while moving the heater, a chain guide foil is disposed on the outside of both end surfaces of the drum-shaped heater in parallel therewith, and the chain guide foil has an annular rail on its outer periphery. On the other hand, a sprocket shaft parallel to the axis of the drum is provided outside the chamber, and a chain is wound in a loop between the sprocket on the sprocket shaft and a chain guide foil, and the chain meshes with the sprocket and the chain A continuous paper setting mechanism in which the rail is fitted into a recess formed by each link and pin, and a rond for holding an edge of the continuous paper is stretched between the chains.