Appendix E Print Head Cleaning | Epson T81 instruction

Confidential

APPENDIX E: PRINT HEAD CLEANING

Paper dust on the heating elements may lower the print quality. In this case, clean the print head as follows:

1)Open the printer cover.

2)Clean the thermal elements of the print head using a cotton swab moistened with alcohol solvent (ethanol, methanol, IPA).

NOTES: 1. Do not touch the print head thermal elements.

2.Do not scratch the print head.

3)Insert a roll paper and close the print head.

NOTE: The print head becomes very hot just after printing and is very dangerous. Be sure to allow the print head to cool down (after printing) before cleaning it. Also, be sure to turn off the printer power before cleaning the print head.

Radiation plate

Print head

Thermal element

Figure E.1 Print Head Thermal Elements

(*)Depending on the roll paper used, paper dust may stick to the platen roller and roll paper end sensor. To remove the paper dust, clean the platen roller and roll paper end sensor with a cotton swab moistened with water.

TITLE

EPSON

TM-T81	SHEET	NO
TM-T81	REVISION
Specification
Specification	A	NEXT	SHEET
(STANDARD)	A	App.8	App.7

Image 131

Epson T81 specifications Appendix E Print Head Cleaning, Figure E.1 Print Head Thermal Elements

Contents

TM-T81 Revisions Design Section Sheet Rev. No Document SpecificationRevision Sheet TM-T81 Cover Rev Confidentiality General Contents REV. Sheet Changed Contents Confidentiality Agreement Epson Specification Standard General Features Confidential Print Buffer-full Printing GS 8 L p1 p2 p3 p4 m fn parameters FS g 1 m a1 a2 a3 a4 nL nH d1...dkFunction 5 GS E pL pH fn a1 n1L n1H Function 48 GS H pL pH fn m d1 d2 d3 d4 GS v 0 m xL xH yL yH d1...dk GS∗x y d1...dkFS q n xL xH yL yH d1...dk1 ... xL xH yL yH d1...dkn Printing Specifications General Specifications 1 Character Size Character SpecificationsAutocutter Paper Roll Supply Device Paper Specification AF50KS-E 1 Specified Original Paper Type No. Single-color paper Internal Buffer Printable AreaPrinting and Cutting Positions 1 Current Consumption Operating Electrical Characteristics 2 Limitation of the Printing Length on Print Ratio EMI EMI and Safety Standards AppliedReliability Environmental Conditions 12.1 Operating Temperature and Humidity Range Installation Interface 1 RS-232 serial interface ConfigurationSpecifications Switching between online and offline GS a 1 TM-T81 Printer Status and Signals 2 XON/XOFF Transmit Timing TM-T81 Printer Status and SignalsDLE ENQ 1 or DLE ENQ 2 commands 1.4 XON/XOFF transmit timing TXD RXD DSR DTR Serial interface connection example 4 Reset DC Characteristics Reset Switching USB Universal Serial Bus Interface Outline USB transmission specifications 1 USB function GND Shell F.G ConnectorsPower Supply Connector 1 Power Supply Connector Pin Assignments 2 Drawer Kick-out Connector Pin Assignments Drawer Kick-out Connector Modular Connector 4 Drawer Circuitry Functions List of Commands FS g GS $ GS a GS D GS E GS H GS K GS L / GS 8 L ESC a ESC c ESC d ESC p ESC t GS \ GS a GS b GS f GS g GS h GS k GS r GS w GS k GS ∗ Epson Common to all pages International Character Set USA Character Code Tables HEX 0 PC437 USA, Standard Europe 1 Katakana 2 PC850 Multilingual 3 PC860 Portuguese 4 PC863 Canadian-French 5 PC865 Nordic 16 WPC1252 17 PC866 Cyrillic #2 18 PC852 Latin2 19 PC858 Euro 255 User-defined USA International Character Sets Panel Buttons Switches and Buttons Power Button 2 Transmission Speed DIP SwitchesXON/XOFF DTR/DSR 4 DIP Switch 2-3 DIP Switch 7 DIP Switch 2-3 USB interface specification DIP Switch 8 Types of the Customized Value Customized value 1 Panel Switches and Indicators Panel LED Indicators Self-test C D E F G H I J Hexadecimal Dumping NV Graphics Print Mode 2 Errors That Can Possibly Recover Error Processing Error Types1 Errors That Automatically Recover CPU Printer Operation When an Error OccursUnrecoverable Errors Print Buffer-full Printing Cover Open Sensor External Appearance Case SpecificationsExternal Dimensions and Mass Color Consumables Standard AccessoriesOptions and Consumables Options Explanation of Terms CommandsCommand Notation MSB LSB Ascii Control Commands Ascii DLE EOT DLE EOT nAscii Can Epson Epson Ascii DLE ENQ DLE ENQ n Fn = DLE DC4 fn m t fn =Ascii DLE DC4 DLE DC4 fn a b fn = D1…d7 DLE DC4 fn d1…d7Fn = ESC SP n ESC ! n Dy ⋅x1 Dy ⋅xk ESC $ nL nHESC % n ESC & y c1 c2 x1 d1 Dy ⋅x1 Xk d1 Dy ⋅xk D1...dk ESC ∗ m nL nH d1...dkESC − n ESC ? n ESC 3 nESC = n N1...nk ESC D n1...nk NULESC E n ESC J n ESC G n ESC R n ESC M n ESC V n ESC T n Dx L Dx H Dy L Dy H ESC \ nL nH ESC c 5 n ESC a nESC c 4 n ESC p m t1 t2 ESC d n ESC n FS g 2 m a1 a2 a3 a4 n L n H FS g 1 m a1 a2 a3 a4 n L n H d1...dk GS $ nL nH GS ! n Printer status print GS a pL pH n mTest pattern Hexadecimal dump print GS D pL pH m a1 b1...ak bk GS E pL pH fn GS E pL pH fn parametersFunction 1 GS E p L p H fn d1 d2 Fn = Format Type of customized value Function 2 GS E p L p H fn d1 d2 d3 Fn =Function 5 GS E p L p H fn a1 n1 L n1 H...ak nk L nk H N1 L N1 H ... ak nk L nk H Epson D1 ... dk Function 6 GS E p L p H fn a Fn =Function 11 GS E pL pH fn a d1...dk fn = Function 48 GS H p L p H fn m d1 d2 d3 d4 Function 12 GS E p L p H fn a Fn =GS H pL pH fn parameters Select the print speed GS K pL pH fn parametersFunction 50 GS K p L p H fn m Fn = Format Function No Function name GS L pL pH m fn GS LGS 8 L Function 50 GS L p L p H m fn Fn = 2 Function 48 GS L p L p H m fn Fn = 0 Function 65 GS L p L p H m fn d1 d2 d3 Function 51 GS L p L p H m fn Fn = 3Function 64 GS L p L p H m fn d1 d2 Fn = Kc1 Kc2 Function 66 GS L p L p H m fn kc1 kc2 Fn =Function Vertical direction Horizontal direction 180 dpi 90 dpi Function 69 GS L p L p H m fn kc1 kc2 x y Bx , by P H m fn a bx by c x L x H y L y H d1...dk GS k pL pH cn fn parameters Function 066 GS k p L p H cn fn n Cn = 48 , fn = Function 065 GS k p L p H cn fn n Cn = 48 , fn = Function 068 GS k p L p H cn fn n Cn = 48 , fn = Function 067 GS k p L p H cn fn n Cn = 48 , fn = Function 069 GS k p L p H cn fn m n Cn = 48 , fn = D1…dk Function 070 GS k p L p H cn fn m Cn = 48 , fn =Function 080 GS k p L p H cn fn m d1 … dk Cn = 48 , fn = P H cn fn m Function 081 GS k p L p H cn fn m Cn = 48 , fn =Function 082 GS k p L p H cn fn m Cn = 48 , fn = N2 = Function 165 GS k p L p H cn fn n1 n2 Cn = 49 , fn =Function 167 GS k p L p H cn fn n Cn = 49 , fn = Function 180 GS k p L p H cn fn m d1 … dk Cn = 49 , fn = Function 169 GS k p L p H cn fn n Cn = 49 , fn = Function 182 GS k p L p H cn fn m Cn = 49 , fn = Function 181 GS k p L p H cn fn m Cn = 49 , fn = = x ⋅ y ⋅ GS ∗ x y d1...dkGS / m GS H n GS B n Epson GS I n GS V m B GS V m n GS L nL nHGS P x y GS r t m GS W nL nHGS \ nL nH GS a n Name Turn smoothing mode on/off Format L n H GS f nGS g 0 m nL nH GS g 2 m nL nH D1...dn GS k m d1...dk NUL GS k m n d1...dn = 7 = 11 ≤ d ≤ 57 where d1 = JAN13 / EAN13 = 12Bar code system Range of n Range of d = 11 GS r n GS w n 6DF Obsolete CommandsESC ESC m ESC u n X H y L y H d1...dk1...x L x H y L y H d1...dkn FS p n m GS v 0 m x L x H y L y H d1...dk Table A.1 Paper Feeding Amount Appendix a Miscellaneous Notes App.3 App.2 Other Notes Replacing the Paper Roll Appendix B Paper Roll Setup Appendix C Recovery from the Auto Cutter Error Figure D.1 Near-end Adjusting Position Table D.1 Adjustment Positions Figure E.1 Print Head Thermal Elements Appendix E Print Head Cleaning Appendix F Notes on Using the Drawer KICK-OUT Connector Ii. For DLE DC4 T1 ⋅ 2ms Return ∗WAIT300MS Power off procedure by the host About updating the maintenance counter Figure I-1 Slant of the Print Appendix H Notes on Printing 2-DIMENSIONAL Code END Appendix J Notes on Using the ASB Status