JPH0360877U

JPH0360877U -

Info

Publication number: JPH0360877U
Application number: JP11924089U
Authority: JP
Priority date: 1989-10-13
Filing date: 1989-10-13
Publication date: 1991-06-14

Description

[Brief explanation of the drawing]

第１図はこの発明を実施した電子写真方式の複
写機のバイアス電源及びその制御系の一例を示す
回路図、第２図は同じくその複写機の全電源制御
系の一例を示すブロツク図、第３図は同じくその
全電源系を制御するシーケンスコントローラのＣ
ＰＵによるメインルーチンの処理を示すフロー図
、第４図は同じくそのバイアス電源を制御するバ
イアス制御ルーチンの処理を示すフロー図、第５
図及び第６図は同じくそのサブルーチンＢＴＬと
ＣＯＭＰＷの処理を示すフロー図、第７図は変数
を分類した領域の一例を示す説明図である。６…バイアス電源、３０…マイクロコンピユー
タ（ＣＰＵ）、３１…タイマ、３２…ノア回路、
３３…インタフエース（Ｉ／Ｆ）（ドライバ）、
３５…ＲＯＭ（テーブル格納手段）、３６…ＲＡ
Ｍ（異常カウンタ）、６１…トランジスタ。 FIG. 1 is a circuit diagram showing an example of a bias power supply and its control system for an electrophotographic copying machine embodying the present invention; FIG. 2 is a block diagram showing an example of a total power supply control system for the copying machine; Figure 3 shows the sequence controller C that also controls the entire power supply system.
FIG. 4 is a flowchart showing the processing of the main routine by the PU. FIG. 4 is a flowchart showing the processing of the bias control routine that also controls the bias power supply.
6 and 6 are flowcharts showing the processing of subroutines BTL and COMPW, and FIG. 7 is an explanatory diagram showing an example of areas in which variables are classified. 6...Bias power supply, 30...Microcomputer (CPU), 31...Timer, 32...NOR circuit,
33...Interface (I/F) (driver),
35...ROM (table storage means), 36...RA
M (abnormality counter), 61...transistor.

Claims

[Claims for Utility Model Registration] 1. In a power supply control device that controls the power supply output by changing a switching operation amount according to an output deviation of a detected value of the power supply output with respect to a target value, table storage means storing a table of set correction values; correction value selection means for selecting and outputting a correction value according to the output deviation from the table stored in the table storage means; and correction thereof. A power supply control device comprising: a driver that changes the operation amount in accordance with the correction value output by the value selection means. 2. In a power supply control device that controls the power output by changing a switching operation amount according to an output deviation of a detected value of the power output with respect to a target value, a change amount for calculating the amount of change in the detected value or the output deviation. a calculation means; a table storage means storing a table of correction values set in advance according to the amount of change calculated by the amount of change calculation means and the output deviation; a correction value selection means for selecting and outputting a correction value according to the output deviation and the amount of change; and a driver for changing the operation amount according to the correction value outputted by the correction value selection means. A power supply control device characterized by being provided with. 3. The power supply control device according to claims 1 and 2, further comprising a verification means for detecting whether the output deviation or the amount of change is within a predetermined range, and a number of times the verification means has verified that the output deviation or the amount of change is not within the range. A power supply control device comprising: an abnormality counter for counting; and an output abnormality determining means for determining a power output abnormality when the count value of the abnormality counter exceeds a predetermined tolerance value.