JPH0258251U

JPH0258251U -

Info

Publication number: JPH0258251U
Application number: JP13563688U
Authority: JP
Priority date: 1988-10-18
Filing date: 1988-10-18
Publication date: 1990-04-26

Description

[Brief explanation of the drawing]

第１図は本考案の複写機の一実施例を示す側面
概略構成図、第２図は本考案の複写機の制御部の
ブロツク図、第３図ａ乃至ｃはいずれも本考案の
動作を説明する図であり、第３図ａはＣＰＵ周辺
の具体的回路図、ｂは波形タイムチヤート、ｃは
濃度センサ出力とコピー濃度との関係を示す図、
第４図は濃度調整の手順を示すフローチヤート図
、第５図及び第８図ａ，ｂは濃度調整用又は倍率
調整用基準原稿の一例を示す図、第６図は倍率調
整のためのスキヤナ速度調整回路図、第７図ａ，
ｂ，ｃは倍率調整手順を示すフローチヤート図、
第９図はライン検出センサ出力信号を示す図、第
１０図は光学系スキヤナの斜視構成図である。１……圧板、２……原稿（ランプ電圧設定用）
、３……コンタクトガラス、４……露光用ランプ
、５……原稿濃度検出センサ、６……第１ミラー
、７……第２ミラー、８……第３ミラー、９……
レンズ、１０……第４ミラー、１１……第５ミラ
ー、１２……第６ミラー、１３……除電光源、１
４……帯電器、１５……トナー濃度検出センサ、
１６……感光体ドラム、１７……現像器、１８…
…トナーホツパー、１９……トナー補給ローラ、
２０……給紙ローラ、２１……レジストローラ、
２２……転写用チヤージヤ、２３……分離用チヤ
ージヤ、２４……搬送ガイド、２５……定着ユニ
ツト、２６……排紙受け、２７……カセツト、２
８……原稿突き当て部、２９……コピー濃度検出
センサ、３０……レジストセンサ、３１……セン
サ部ユニツト、３２……ゲートアレイ、３３……
操作部、３４……ＣＰＵ、３５……ＲＡＭ（記憶
装置）、３６……タイミングパルス発生回路、３
７……ＤＣドライブ回路、３８……ＡＣドライブ
回路。 Fig. 1 is a schematic side view showing an embodiment of the copying machine of the invention, Fig. 2 is a block diagram of the control section of the copying machine of the invention, and Figs. 3a to 3c all show the operation of the invention. FIG. 3A is a specific circuit diagram around the CPU, FIG. 3B is a waveform time chart, and FIG. 3C is a diagram showing the relationship between the density sensor output and the copy density.
Figure 4 is a flowchart showing the procedure for density adjustment, Figures 5 and 8 a and b are diagrams showing an example of a reference document for density adjustment or magnification adjustment, and Figure 6 is a scanner for magnification adjustment. Speed adjustment circuit diagram, Figure 7a,
b, c are flowcharts showing the magnification adjustment procedure;
FIG. 9 is a diagram showing the line detection sensor output signal, and FIG. 10 is a perspective configuration diagram of the optical system scanner. 1...pressure plate, 2...original (for lamp voltage setting)
, 3... Contact glass, 4... Exposure lamp, 5... Original density detection sensor, 6... First mirror, 7... Second mirror, 8... Third mirror, 9...
Lens, 10... Fourth mirror, 11... Fifth mirror, 12... Sixth mirror, 13... Static elimination light source, 1
4... Charger, 15... Toner concentration detection sensor,
16...Photosensitive drum, 17...Developer, 18...
...Toner hopper, 19...Toner supply roller,
20... Paper feed roller, 21... Registration roller,
22... Transfer charger, 23... Separation charger, 24... Conveyance guide, 25... Fixing unit, 26... Paper ejection receiver, 27... Cassette, 2
8... Document abutting section, 29... Copy density detection sensor, 30... Registration sensor, 31... Sensor section unit, 32... Gate array, 33...
Operation unit, 34... CPU, 35... RAM (storage device), 36... Timing pulse generation circuit, 3
7...DC drive circuit, 38...AC drive circuit.

Claims

[Claims for Utility Model Registration] (1) An optical reading device that projects a copy image onto a photoconductor while relatively moving the image information of a document, and an optical reader that projects the image information formed as a latent image on the photoconductor. In a copying machine equipped with a developing device that makes a visible image, a transfer device that transfers this visible image onto transfer paper, and a fixing device that fixes and solidifies the transferred image, reflected light for reading the original image is incident. a density detection sensor that detects the intensity of the light or a density detection sensor that detects the density of the image transferred to the transfer paper; and comparison means that compares the output of the density sensor with a predetermined maximum and minimum threshold value. , a means for automatically increasing or decreasing the exposure lamp voltage based on the output of the comparison means, a switch means for switching between the density adjustment mode and the normal copying mode, and a switch means for switching between the density adjustment mode and the normal copying mode; 1. A copying density and magnification control device for a copying machine, etc., comprising: storage means for storing an exposure lamp voltage. (2) an optical reading device that projects a copy image onto a photoreceptor while relatively moving the image information of the original, and a developing device that creates a visible image of the image information formed as a latent image on the photoreceptor; In a copying machine equipped with a transfer device that transfers this visible image onto transfer paper and a fixing device that fixes and solidifies the transferred image, a portion of the reflected light for reading the document image is inputted to create copy lines on the document. a copy line detection sensor for detecting a copy line or a copy line detection sensor for detecting a copy line from an image transferred to transfer paper; and means for measuring a time difference between two or more copy line outputs output from the copy line detection sensor; means for adjusting the moving speed of the optical scanner so that the measurement result becomes a specified value; a switch for switching between a magnification adjustment mode and a normal copying mode; and an optical scanner for adjusting the time difference detected in the magnification adjustment mode. 1. A copy density and magnification control device for a copying machine, etc., comprising a storage means for storing speed data.