Subscribe to Our Youtube Channel
Related Manuals for Rongta Technology RT638
Summary of Contents for Rongta Technology RT638
- Page 1 Mini thermal printer mechanism RT638 Ro n g t a Te c h n o l o g y (X i a m e n ) Gr o u p Co . , Lt d . V1.0 www.rongtatech.com...
-
Page 2: Table Of Contents
RT638 Contents 1. Introduction..........................2 1.1 RT638 thermal printer mechanism..................2 1.2 Characteristics of RT638....................2 1.3 Description..........................2 2. Specifications..........................3 3.Parameters of heating head...................... 4 3.1 Rated parameters........................ 4 3.2 Maximum allowable parameters..................4 3.3 Calculation formula......................5 3.4 Recommended parameters....................5 3.5 Electrical parameters......................6... -
Page 3: Introduction
◆ Low noise ◆ 1.3 Description This Manual describes the electrical and mechanical characteristics of RT638, and may serve as reference for designers. The Company reserves the right to change this Manual. Please contact us directly for the latest version. -
Page 4: Specifications
RT638 Specifications Project Specifications Printing method thermal Printing dot 576 dot/line Dot density (dot/mm) Print width (mm) Paper width (mm) Paper feed accuracy (mm) 0.0625 Width x depth x height (mm) 92.3x33x15.2 Weight (g) Temperature detection Thermistor of heating head... -
Page 5: Parameters Of Heating Head
RT638 3.Parameters of heating head 3.1 Rated parameters Project Specifications 576 dot heating dots 0.125 mm Dot pitch 0.0625 mm Feed accuracy 72 mm Printable width 176Ω±4% Average resistance 4.2V~8.5V Working power pulses Pulse service life 50 km Mechanical service life Service life test condition: temperature 25°C, heating time ratio ≤... -
Page 6: Calculation Formula
RT638 3.3 Calculation formula The heating energy can be calculated via the following formula: 3.4 Recommended parameters Recommended working parameters Code Description parameters Heating power 0. 25W/dot =176Ω Voltage at both ends of Heating voltage 7.2V connection line Recommended 1.25msec speed 5°C... -
Page 7: Electrical Parameters
RT638 3.5 Electrical parameters... - Page 8 RT638...
-
Page 9: Sequence Characteristics
RT638 3.6 Sequence characteristics... -
Page 10: Structure Diagram
RT638 3.7 Structure diagram... -
Page 11: Thermistor
RT638 3.8 Thermistor... -
Page 12: Matters Needing Attention
RT638 3.9 Matters needing attention 3.9.1 The TPH and photoelectric sensors on the printer mechanism are electrostatic sensitive components.When using the printer mechanism, please take protective measures (for example, wearing an electrostatic ring, ensuring appropriate humidity in the workshop, etc.) to prevent static damage of the internal components and parts of the printer mechanism. - Page 13 RT638 C: In the environment with water condensation due to humidity, please do not switch on the power. If the power is on, please cut off the power immediately. At the same time,allow the thermal head to dry before use. The use of the printer mechanism is related to the environment (low temperature or high humidity).
-
Page 14: Stepping Motor
RT638 4. Stepping motor For each step the stepping motor advances, the paper advances by 0.0625 mm. 4.1 Stepping motor phase The stepping motor of RT638 adopts 2-2 phase driving mode with has 4 positions: positions STEP1 STEP2 STEP3 STEP4 4.2 Stepping motor parameters... -
Page 15: Stepping Motor Driv
ROHM of 6848, SANYO of 1836,1838. 5. Paper shortage detection and platen shaft ready detection RT638 printer has a reflective photoelectric detection switch. As shown in the figure below, when it is out of paper or the platen is not pressed properly, the light emitted by the photoelectric detection cannot be reflected, with “high”... - Page 16 RT638 Photoelectric parameters Project Code Condition Value unit Forward =20mA voltage Input end Reverse µA current Collector to emitter =0.5mA breakdown voltage Emitter to Output end collector =0.1mA breakdown voltage Dark current =10V of collector Collector to =2mA emitter =1mW/c...
-
Page 17: Pin Definition
RT638 6. Pin definition signal Description C pole of the transmitting tube Collector of the photoelectric triode and A pole of the emitter Emitter of the phototransistor Platen roller ready detection switch the printer power Print data input Print clock input... -
Page 18: Mechanical Design Reference
RT638 7. Mechanical design reference 7.1 Design reference for easy paper loading structure Note: 1) The sizes marked with "*" are recommended. 2) ○ in the figure below is the center of the printer. 3) A paper guide is required to ensure the stability of the photoelectric detection signal output when feeding paper. - Page 19 RT638 Design reference for the position of the rotating shaft of the easy paper loading device:...
-
Page 20: Paper Roll Placement Location
RT638 7.2 Paper roll placement location Wrong installation method:... -
Page 21: Printer Mechanism Installation Size
RT638 7.3 Printer mechanism installation size hook center of paper positioning 2-M2 (mounting screw hole) -
Page 22: Mechanical Dimensions Diagram
RT638 7.4 Mechanical dimensions diagram...
Need help?
Do you have a question about the RT638 and is the answer not in the manual?
Questions and answers