JPS6094369A - Optically writing head - Google Patents

Abstract

PURPOSE:To obtain exact connection without fear of disconnection by a method in which connectors to be connected by insertion to the connectors on the body of an optical printer are provided on the end face of an optical writing head, and positioning pins are also provided there. CONSTITUTION:An optical writing head is inserted along a guide rail 33, and positioning pins 32 are inserted into the positioning holes on the head body side. A connector 31 is thus allowed to insert into the connector on the head body side, and a drive circuit is connected to interface, etc., on the head body side. Since the connector 31 is integrated with the head by a circuit-pattern connection without creeping of lead wire on the head 1, connection can be simply made on one- touch basis without fear of disconnection when the head 1 is taken in or out. Since the connector 31, etc., are set on the end face 30, the whole size of the optical writing head can be miniaturized.

Description

Description: TECHNICAL FIELD This invention relates to self-scanning optical writing heads used in optical printers.

Prior Art FIG. 1 schematically shows an optical printer using a self-scanning optical writing head 1, in which a belt-shaped photoreceptor 4 stretched between rollers 2 and 3 has a surface charged with a charger during its movement. 5, it is uniformly charged.

Then, the head 1 operates under the control of the drive circuit to expose the surface of the photoreceptor 4 to form a latent image pattern. This latent image is developed into a visible image by a developing device 6, and is transferred to a transfer paper 10 fed at a fixed timing via a paper feed roller 7, a separation roller 8, and a registration roller 9.
It is transferred by the action of This transfer paper 10 is attached to the fixing device 1
After being fixed by 2, the paper is ejected by a paper ejection roller 13.

On the other hand, the surface of the photoreceptor 4 is neutralized by a charge removal lamp 14 and cleaned by a cleaning device 15 in preparation for the next image formation.

Here, the optical writing means is not limited to a self-scanning type, and a laser method or the like can be adopted. Since it is relatively large, complex, and expensive, a self-scanning type that does not have these disadvantages is used. This self-scanning optical writing head 1 is an LE.
There are two types: a light-emitting type, such as a D array or a fluorescent tube array, in which writing is performed by an optical signal, and a non-light-emitting type, in which writing is performed by an optical shutter, such as an LCD array.

FIG. 2 shows an example of a light-emitting self-scanning optical writing head IA, in which a heat sink 6 made of aluminum or the like is connected to a substrate 17 made of ceramic or the like, and this substrate 17 has an LED array and a fluorescent tube array. An array light source 18 such as the above is attached. Driver ICs 19 are mounted on the substrate 17 in the longitudinal direction on both sides of the array light source 18, and lead wires 2o and connectors 2] connecting the driver ICs with the outside are attached to the back of the heat sink 16. It is located. and,
A holding member 23 is attached to the lower surface of the substrate 17 via a sealing member 22.
is attached, and by this holding member 23, the imaging element 2 located between the array light source 18 and the Pel 1 to photoreceptor 4 is attached.
4 (for example, using SELFOC Lens Array (trade name) manufactured by Nippon Sheet Glass Co., Ltd.) is supported. The imaging element 24 is set so that the focal point can be finely adjusted in the vertical direction.

On the other hand, FIG. 3 shows the structure of a self-scanning optical writing head IB using an LCD panel as an example of a non-emissive type. The image is formed by the vi image element 24. Here, a driver rc] 9 is placed on the same panel as the LCD panel 27.

In either method, the drive circuit for the arrayed light source 1.8 (or optical shutter array) is generally constructed as shown in FIG. First, the driver ICI 9 is cascade-connected and mounted on the head 1, and has 8-bit signal lines on both sides, two control lines, a power supply line, and a GND line. Conventionally, lead wires 20 and connectors 21 are used as shown in FIG. 2 to connect these 12 lines to external interfaces and power sources.

However, with such a system, the lead wire 2o may break when the optical writing head 1 is inserted or removed, and the connector 2I must be attached and detached each time, which is inconvenient and undesirable. In addition, the connector 21 and the like are arranged on the back side of the heat sink 16, which occupies a considerable amount of space and becomes an obstacle to downsizing the head.

the purpose The present invention was made in view of these points.

It is an object of the present invention to provide a highly reliable optical writing head in which signal lines and the like can be easily connected when the head is taken in and out, and there is no fear of disconnection or the like.

Structure An embodiment of the present invention will be described based on FIGS. 5 and 6. Components that are the same as those shown in FIGS. 1 to 4 are designated by the same reference numerals. In this embodiment, a connector 31 and positioning pins 32 are provided on the end surface 30 of the heat sink 16 of the optical writing head 1. That is, the optical head 1 is inserted into and removed from the printer using the guide rail 33 as a guide, and the main body side has a main body side connector into which the connector 31 is inserted, and a positioning hole into which the positioning pin 32 is inserted. has. Here, the connector 31 has pins 34 corresponding to each line shown in FIG.
etc., by pattern wiring on the board.

In such a configuration, by inserting the optical writing head 1 along the guide rail 33 and aligning the positioning pin 32 with the positioning hole and inserting it, the connector 31 is also inserted into the main body side connector, and the drive The circuit will be connected to the interface etc. on the main body side. In this way, according to this embodiment, the lead wire does not run around on the optical writing head 1, and the connector 3 is integrated with the writing head 1 through circuit pattern connection, which prevents disconnection when the head is inserted or removed. You don't have to worry about it, and you can easily connect it with just one touch. Furthermore, since the connector 31 and the like are arranged on the end face 30, the overall size of the optical writing head 1 can be reduced.

Effects Since the present invention is configured as described above, there is no need to run the lead wire around, so there is no worry about wire breakage, and the connection to the main body can be made reliably with a single touch.Furthermore, the head can be made smaller. It is.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of an optical printer, Fig. 2 is a longitudinal cross-sectional side view of a light-emitting type spatula, Fig. 3 is a side view of a non-emissive head, Fig. 4 is a circuit diagram of a drive circuit, and Fig. 4 is a schematic side view of an optical printer. 5. FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 6 is a side view. 1... Self-scanning optical writing head, 19... Dry/
< I C130... End face, 31... Connector, 32
...Positioning pin, 34...Pin applicant Rico Co., Ltd. -

Claims (1)

[Claims] In a self-scanning optical writing head used in an optical printer, a connector is provided on the end face that has pins that are pattern-connected to the mounted driver IC, etc., and is plugged into the main body side connector. An optical writing head characterized by having a positioning pin inserted into a positioning hole.