JP2716964B2 - Stencil printing press with security function - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing machine having a security function. 2. Description of the Related Art A printing section having a conventional plate making apparatus, a plate feeding apparatus and a printing apparatus, an operation section operated by a printer operator, and a control section for inputting information from the operation section and controlling the operation of each section. In a printing press equipped with the above, if the used base paper is left in the open air for a long time after being peeled off from the plate cylinder, the ink attached to the surface of the plate cylinder is hardened and solidified, which is prevented. As a measure, the used base paper is kept attached to the plate cylinder, and is peeled off before the next printing is started. [0003] By the way, if the printed content of the base paper attached in this way does not require confidentiality, there is no problem with this, but if confidentiality is required, this should be prevented. There is a problem that can not be. Therefore, as a stencil printing machine having a confidentiality maintaining function capable of solving such a problem, Japanese Patent Application Laid-Open No. 59-198185
A stencil printing machine such as that disclosed in Japanese Patent Laid-Open Publication No. H10-264, has been proposed. In this stencil printing machine, when the confidential mode is selected after printing is completed, the used stencil is peeled off from the plate cylinder, and a new stencil-free stencil is mounted on the plate cylinder instead. . [0004] However, in such a stencil printing machine having such a confidentiality preserving function, not only is the new stencil which is not stencil-made wastefully consumed, but also the peeling of the used stencil from the plate cylinder. There is a problem that it takes a long time to mount a new stencil sheet on a plate cylinder without making a plate, and a wasteful waiting time of a worker is required during that time. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the problems of the conventional stencil printing machine having a confidentiality maintaining function as described above. An object of the present invention is to provide a stencil printing machine having a confidentiality maintaining function without having to exchange used base paper and new stencil-free base paper without wasting a worker's useless waiting time. [0006] In order to achieve the above object, the present invention provides a printing unit having a plate making device, a plate feeding device, and a printing device, and an operating unit operated by a printer. And a control unit for inputting information from the operation unit and controlling the operation of each unit.When a document is set and the start key of the operation unit is operated, the plate is automatically made on the base paper under the control of the control unit. With the base paper, plate feeding and printing, if the start key is operated without setting another original as it is,
In a stencil printing machine that performs only printing using the stencil sheet, a security key is provided in the operation unit, and the security mode is stored in the control unit by operating the security key.
If another document is not set, printing is not performed, and the stored security mode remains stored even when the power is turned off. In the embodiment of the present invention shown in the drawings, reference numeral 1 denotes a printing unit, 2 denotes an operation unit, 3 denotes a control unit, and 4 denotes a display unit. Device 6,
The operation unit 2 includes a group of operation keys such as a numeric keypad 9, a start key 10 and a security key 11, and the control unit 3 includes a microcomputer. It has a circuit 13, a RAM 14, and a ROM 15. In the above-described apparatus, when printing is performed, a manuscript is set on a manuscript setting unit (not shown), and the necessary number of prints is controlled by the ten keys 9 of the operation unit 2.
Is set, and the start key 10 is operated. According to the instruction of the instruction circuit 13 of the control unit 3, the plate making is performed by the plate making device 6, and the plate made by the plate making device 7 is sent to the printing device 8 by the plate feeding device 7. The plate is supplied, the set number of sheets are printed by the printing device 8, and the plate is discharged by the plate discharging device 5. In this state, if it is desired to obtain the same printed matter from the base paper, the same printed matter can be obtained simply by operating the start key 10 without setting the original. In this way, necessary printing is automatically performed. FIG. 2 shows a flowchart of a program incorporated in the control unit 3 for performing security work. If the contents of the printed matter are to be kept confidential when printing is completed, the confidentiality key 11 of the operation unit 2 is operated. The command is input and processed, and then the security mode command is stored in the memory of the RAM 14. This memory is stored, for example, by a non-volatile memory or a backup battery for holding information in the memory so that the stored information is not lost even when the power is turned off. If such a security mode is stored in the memory of the RAM 14, the printing program will not be executed unless another original is set as shown in FIG. After that, to release the stored security mode, another document is set, and the above-mentioned operation necessary for normal printing operation is performed, thereby discharging the used security plate and renewing the new one. Plate making, plate feeding, and printing of the document are resumed. As described above, the present invention is directed to a printing section having a plate making device, a plate feeding device, and a printing device, an operating portion operated by a printer operator, and inputting information from the operating portion. And a control section for controlling the operation of each section.When a document is set and the start key of the operation section is operated, the control section automatically controls the plate to make a stencil sheet, obtain a stencil sheet, and perform plate feeding and printing. When the start key is operated without setting another original as it is, only printing is performed on the stencil sheet, a security key is provided in the operation unit, and the security key is operated to control the security mode in the control unit. When remembered,
If another document is not set, printing will not be performed, additional printing will not be possible and confidentiality will be possible, and the stored confidentiality mode will remain stored, so the power will be turned off. Also, there is an effect that confidentiality is maintained without releasing the confidentiality mode.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an embodiment of the present invention. FIG. 2 is a flowchart of a program of a control unit according to the first embodiment. [Description of Signs] 1 Printing unit 2 Operation unit 3 Control unit 4 Display unit 5 Plate discharging device 6 Plate making device 7 Plate feeding device 8 Printing device 9 Numeric keypad 10 Start key 11 Security key 12 Operation circuit 13 Command circuit 14 RAM 15 ROM

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Hirosawa Takazawa               Shimada, Shibata-cho, Miyagi Prefecture               3 in 1 Tohoku Ricoh Co., Ltd. (72) Inventor Hiroshi Kanno               Shimada, Shibata-cho, Miyagi Prefecture               3 in 1 Tohoku Ricoh Co., Ltd.                (56) References JP-B-62-30117 (JP, B2)

Claims (1)

(57) [Claims] A printing unit having a plate making device, a plate feeding device and a printing device, an operation unit operated by a printer, and a control unit for inputting information from the operation unit and controlling the operation of each unit, and setting an original. When the start key of the operation unit is operated , the plate is automatically made on the base paper under the control of the control unit , the plate is made, the plate is fed, and printing is performed.
When operating the start key, the in plate-making stencil printing machine sheet by performing <br/> printing only, the confidentiality key provided in the operation unit, confidentiality mode stored in the control unit by operating the confidentiality key Stencil printing machine having a security function, wherein printing is not performed unless another document is set, and the stored security mode is stored even when the power is turned off. .