JPS63198264U

JPS63198264U -

Info

Publication number: JPS63198264U
Application number: JP8925987U
Authority: JP
Priority date: 1987-06-10
Filing date: 1987-06-10
Publication date: 1988-12-20
Also published as: JPH0448049Y2

Description

[Brief explanation of the drawing]

第１図は携帯型コピー機の制御回路の構成を概
略的に表す概略構成図、第２図は携帯型コピー機
の形状を表す斜視図、第３図は反射型インタラプ
タの周囲の構成を説明する説明図、第４図は反射
率検出回路の各部の電圧を表すタイミングチヤー
ト、第５図はさまざまな印字対象におけるレベル
シフト回路７５の出力電圧を示すグラフ、第６図
は蛍光燈からの所定距離に対するレベルシフト回
路７５の出力電圧を示すグラフ、第７図は他の実
施例における反射率検出回路の要部の構成を表す
回路図、第８図他の実施例におけるスキヤナ部の
構成を表す構成図、第９図はスキヤナ部の各点に
おける電圧を説明する説明図、である。１……携帯型コピー機、３……制御回路、４…
…電荷結合型イメージセンサ、５……サーマルヘ
ツド、８……ローラ、１１……反射型フオトイン
タラプタ、３２……安全回路、６１……反射率検
出回路、ＳＷ１……モード切替スイツチ。 Fig. 1 is a schematic configuration diagram schematically showing the configuration of the control circuit of the portable copy machine, Fig. 2 is a perspective view showing the shape of the portable copy machine, and Fig. 3 explains the configuration around the reflective interrupter. 4 is a timing chart showing the voltage of each part of the reflectance detection circuit, FIG. 5 is a graph showing the output voltage of the level shift circuit 75 for various printing targets, and FIG. 6 is a timing chart showing the voltage of each part of the reflectance detection circuit. A graph showing the output voltage of the level shift circuit 75 with respect to distance, FIG. 7 is a circuit diagram showing the configuration of the main part of the reflectance detection circuit in another embodiment, and FIG. 8 shows the configuration of the scanner section in another embodiment. The configuration diagram and FIG. 9 are explanatory diagrams illustrating voltages at each point of the scanner section. 1... Portable copy machine, 3... Control circuit, 4...
...Charge coupled image sensor, 5...Thermal head, 8...Roller, 11...Reflection photo interrupter, 32...Safety circuit, 61...Reflectance detection circuit, SW1...Mode changeover switch.

Claims

[Scope of claim for utility model registration] 1. Reading means for reading the image written on the manuscript;
a data storage means for storing the data of the read image; a printing head formed to be exposed to the outside and energized to manifest an image on the recording medium; A portable copying machine comprising an energizing means for energizing, a projection means for projecting light onto a printing object of the printing head, and a reflectance detection means for detecting the reflectance of the light reflected by the printing object. A portable copying machine characterized by comprising: a current supply stop means for stopping the power supply to the printing head by the current supply means when the detected reflectance is within a predetermined range. 2. The energization stopping means stops energizing the printing head when the detected reflectance of the printing object is within a range of 0.64 to 0.22 relative to the reflectance when white paper is used as the printing object. A portable copying machine as set forth in claim 1 of the claims for discontinued utility model registration. 3. The projection means projects discontinuous light onto the printing object, and the reflectance detection means detects the reflectance based on the discontinuous light reflected by the printing object.Claim 1 of the Utility Model Registration Claims or a portable copying machine according to any of paragraph 2. 4. The portable copying machine according to any one of claims 1 to 3, wherein the energization stopping means is activated when a switch provided on the exposed surface of the printing head comes into contact with the recording medium.