JPS60192632A - Autographic stencil paper processing device - Google Patents

Abstract

PURPOSE:To permit a high density and high speed processing by optionally selecting an electrode feed pitch for one rotation of a drum of a discharge electrode portion. CONSTITUTION:A copy 2 which is placed on a cylindrical drum 1 is read by an optical circuit portion which consists of a light collecting lens 3, light receiving elements 4 and etc. and the light signals therefrom are converted, amplified and discharged from discharge electrode portions 7, 7 onto the original form 6 which is placed on a cylindrical drum 5. Between the optical circuit portions and the discharge electrodes the reading pitches (p) and the discharge electrode numbers (n) are equally arranged. In other words, the number 71-78 of discharge electrodes of the discharge electrode body 10 and the pitch (p) between the discharge electrode are selected as desired correspondingly to the density of the processing original form as required and, thus, the feeding pitch per one rotation of the drum of the electrode portion is established. A larger pitch is obtainable for the above feeding pitch in comparison with a system of a single electrode, permitting a high speed processing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic plate making device δ for base paper used in mimeograph printing.
More specifically, by setting the number of electrodes in the discharge electrode section and the pitch between the electrodes to arbitrary values corresponding to the image of the document, the electrode feeding pitch per drum rotation of the discharge electrode section can be adjusted according to the document image. This invention relates to a plate-making device for making mimeograph paper at an appropriate pitch.

Conventionally, a mimeograph machine, as shown in FIG. Condensing lens 22. The optical system circuit section consisting of the light receiving element 23 etc. reads the optical signal, and the read optical signal is passed through the conversion amplifier circuit 31 etc., and the original plate 51 placed on the cylindrical drum 41 of the electrode section is melted by the discharge of the discharge electrode 61. This is the process by which the mimeograph paper is made into plates.

However, in this plate-making apparatus, since the discharge electrode portion had a single electrode corresponding to the optical system circuit, a long plate-making time was required.

In order to simplify such a plate-making process, the most basic device may include an increased number of optical circuits, corresponding discharge electrodes, and arrays at the linear density required for the plate-making base paper. However, with this device, the discharge electrodes are arranged in two rows of high-density lines, so there are many problems in manufacturing, and the insulating material conventionally used between the discharge electrodes The insulating coating is destroyed by the initial heat generation, and high voltage cannot be stopped being applied to the discharge electrode. Furthermore, if the number of optical system circuits and discharge system circuits is increased, the cost of the entire device will inevitably increase.
However, since a large space is required for installing the circuit, an increase in the size of the device itself is unavoidable.

The present invention has been made in view of the problems mentioned in section 2, and it is possible to set the number of discharge electrodes in the discharge part and the distance between the discharge electrodes to arbitrary values, without having to use a large number of optical system circuits and discharge system circuits. By setting the electrode feeding pitch per drum rotation of the electrode portion to an appropriate value, it is possible to provide a high-speed plate-making device that is capable of high-density plate-making. Furthermore, if the present invention is used, it is possible to widen the pinch between the electrodes compared to the plate-making density, which makes it easier to manufacture the electrodes themselves, and also prevents short-circuit accidents between the discharge electrodes. can.

Hereinafter, the plate making apparatus of the present invention will be explained in detail based on the drawings.

FIG. 2 is a schematic diagram of the plate making apparatus of the present invention.

This plate-making device includes a document 2 placed on a cylindrical drum 11.
Condensing lens 3. The electrodes 7, 7 of the discharge electrode section convert and amplify the optical signal read by the optical system circuit section consisting of the light receiving element 4 etc. and from the optical system circuit section and discharge it to the original 6 placed on the cylindrical drum 5. It consists of... Between the optical system circuit section and the discharge electrode section, the reading pitch p and the number of readings n are arranged to be equal to the pitch between the discharge electrodes and the number n of discharge electrodes.

That is, the optical system circuit section and the discharge electrode section have a 1:1 correspondence relationship.

Therefore, it is possible to simultaneously read a plurality of images from a document, and the discharge electrode is operated by the driver in accordance with the optical signal of the reading.

FIG. 3 is a block circuit diagram for explaining these correspondence relationships in more detail.

The original 2 placed on the cylindrical drum 1 is irradiated with light L... from the light emitting element 8, and this light L...
・An optical system circuit section consisting of a combination of lenses, optical fibers, light receiving elements, etc. χ1, χ2... can be provided in any number of circuits, or a plurality of pixels can be read using lenses, COD elements, etc., and this can be converted into a conversion amplifier circuit section. y and the discharge electrode drive device Z.

Then, the original plate 6 is placed δ between the discharge electrode portion and the earth electrode. As a result, light from the light emitting element 8 passes through the original 2,
L... is received by the optical system circuit parts χ1, χ2..., converted and amplified by the conversion and amplification circuit part y, and drives the electrode part drive device 2, and the discharge electrode 7 is driven by the drive device 2 of the electrode part.
, 7... are moved and discharged according to the set electrode feeding pitch per drum rotation. Note that the optical system circuit section χ section...χn and the discharge electrodes 7, 7... are on the same table or connected by some method, and move over the document 2 in synchronization with the electrode feeding pitch per rotation of the drum. You can read the image by

That is, as shown in FIG. 4, if the number of discharge electrodes 71 to 78 of the discharge electrode body 1o and the pitch (p) between the discharge electrodes are arbitrarily selected according to the density of the plate-making base paper to be used as a ghost,
The pinch to be fed per drum rotation of the electrode section is set. Since this feeding pitch is wider than that of the conventional single electrode, high-speed plate making is possible. This is expressed as the number of discharge electrodes n, the pitch between discharge electrodes p
and the order of each electrode is N (however, N is selected from a natural number of 1 or more in consideration of the manufacturing tolerance of the discharge electrode and the mechanical tolerance of the feed pitch of the discharge electrode per rotation of the drum). For example, the pitch on the original plate as shown in the table below is selected, and the feeding pitch between the drum and the discharge electrode per rotation is thereby set.

Number of discharge electrodes: n Pitch between discharge electrodes: p Order 2 N For example, if the number of discharge electrodes (n) is 8. Pitch between discharge electrodes (p
) is 3.7 mm and the order (N) is 1, the pitch on the original plate is p/ (n' -1) = 0.7/(81)
= 0.1 mm, the feed pitch of the discharge electrode per drum rotation is nXp/n-1 = 8X O, 7/ (8-1)
= 0.8 (mm), respectively.

Judging from these numbers, the pitch between the discharge electrodes is better than the original version.
−, a fine discharge electrode pitch can be obtained.

Therefore, the plate making time itself can be reduced by 1/n, or 1/8 on the upper side, compared to the previous case with the same pitch.

Regarding the above i', the mimeograph plate making apparatus of the present invention can set the optimum electrode feeding pitch per drum rotation by selecting the number of discharge electrodes and the pitch between the discharge electrodes to arbitrary values. In addition to being able to make mimeograph paper at an extremely high speed compared to other machines, this device also reduces the increase in manufacturing costs.
Moreover, the device itself has many advantages such as being lightweight and compact.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram illustrating a conventional mimeograph paper making device, FIG. 2 is a schematic diagram explaining a mimeograph paper making device according to the present invention, and FIG. 3 is a diagram showing the space between the optical system circuit section and the electrode section. FIG. 4 is a schematic diagram illustrating the arrangement of discharge electrodes. l...Cylindrical drum, 2...Manuscript. 3... Condenser lens, 4... Light receiving element. 5... Cylindrical drum, 6... Original plate. 7...Discharge electrode. χ1, χ2...Optical system circuit section. y...Conversion amplifier circuit, Z...Discharge electrode drive device. Applicant Nippon Aleph Co., Ltd. Agent Patent attorney Funabashi Solid agent Figure 1 Figure 2 Figure 3 Figure 4 Procedural amendment April 72, 1985 ■, Case indication 1988 Patent Application No. 048547 2 , Relationship with the Title of Invention Case Name of Patent Applicant: Nippon Aleph Co., Ltd. 4, Agent In the specification, column for detailed explanation of the invention and column for brief explanation of drawings (2) Page 6 of the specification, No. 6 In the first line, "between discharge electrodes" should be corrected to "discharge electrodes." (3) "Table 1" on page 6 of the specification is corrected as follows. (4) On page 8, line 18 of the specification, "For example, the number of discharge electrodes (n) is 8," should be replaced with "For example, the pitch on the original plate = /
- Correct the number of discharge electrodes (n) to 8, using the door formula % formula %. (5) “Set order (N) to 1” on page 6, line 19 of the specification
Correct the statement to "order (N) to O". (8) On page 7, line 8 of the specification, the phrase ``The plate-making time itself is the same pitch as in the past'' is replaced by ``The plate-making time itself corresponds to the plate-making density that corresponds to the feed pitch of the discharge electrode per rotation of the drum.'' I am corrected. (7) In the 8th line of page 8 of the specification, "8...original plate" is corrected to "6...mimeograph paper."that's all

Claims (1)

[Claims] ■ In a device that converts and amplifies signals from the optical circuit section that reads the original image on the drum and discharges the electrodes on the drum of the discharge electrode section to make a mimeograph paper, the number of discharge electrodes and the pitch between the discharge electrodes are determined. A mimeograph paper plate-making device characterized in that an arbitrary plate-making image density can be obtained by setting the electrode feeding pitch per drum rotation of the discharge electrode portion to an appropriate value.