saleem Printer Notes New 11

7/28/2019 saleem Printer Notes New 11

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PRINTER

Printer is output device which gives us hard copy.Printers are divided into two categories1:- IMPACT PRINTERS

2:- NON IMPACT PRINTERS

IMPACT PRINTERSIn impact printers print head touch the media to perform printing.Ex:- Type writer

Dot matrix printerLine matrix printer

NON IMPACT PRINTERSIn non impact printers print head doesnt touch any media to perform printingEx: - DeskJet

LaserJetDOT MATRIX PRINTERDOT MATRIXIn DMP printing characters are formed by dots.MATRIXWhen group of dots are arranged in sequence order of rows and columns then its calledas Matrix

[::]2x2 [:::]2x3

CPI (characters per inch)10cpi, 12cpi, 15cpi.10cpi is default.

LPI (lines per inch)6lpi, 8lpi, 10lpi. 6lpi is default.

CPS (characters per inch)0 to 500 CPS low speed printers>500 CPS high speed printers

BIT MAP IMAGE
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Space provided for a character to printLeft margin Top margin right margin(2 coloms) (2rows) (2coloms)

Bottom margin

PRINT HEADS9 & 24 pin print heads are used mostly.There are some other models with 7 & 18 pin PHs.

MEDIARibbon is media in impact printersTwo types low density used in 9 pin printers.

High density used in 24 pin printers.

DMP leading manufactures are WEP TVSE EPSONClassifications of printers

9 pin PH 80 column 9 pin PH 136 column24 pin PH 80 column 24 pin PH 136 column

Models of printers according to mfgWEP9 pin PH 80 column printersWEP CSX 450 WEP LX 540WEP DX 800 BOUNTI BLACK WEP 800 DX

9 PIN PH 136 COLUMN PRINTERSWEP EX 2050+DX WEP EX 330+DX

WEP EX DTX 3370

24 PIN 80 COLUMN PRINTERSWEP LQ 540 DX WEP DSI 810

24 PIN 136 COLUMN PRINTERSWEP LQ 1050+DX SUPER WEP LQ DSI 5235WEP LQ DTI 3330 WEP HQ 1070+DX


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TVSE PRINTERS9 PIN PH 80 COLUMN PRINTERSPRO X 900 MSP 140 STARSMSP 240 STAR HD 250 GOLD

MSP 240 CLASSIC STAR MSP 250 STAR

9 PIN PH 136 COLUMNSMSP 245 MSP 255MSP 245 STAR MSP 255 MARTHONHD 245 GOLD HD 755HD 955

24 PIN PH 80 COLUMNSMSP 430 MSP 450 CHAMPION

24 PIN PH 136 COLUMNSMSP 355 MSP 355 MARTHONMSP 455 XLC MSP 345 STARHD 745 HD 945

PARTS OF PRINTERMECHANISUM LOGIC CARD POWER SUPPLY

MECHANISUMCarriage sectionPaper feed sectionMotorsSensorsPrint heads

PRINT HEADS


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Types of print heads 9 pin PHs 24 pin PHs

9 pin PH 9 pins9 coilsSingle PCB (printed circuit board)

Single head cable connectorSingle head cable 12 or 14 conductorHeat sinkNoseGuide

9pin 12 conductor print head

1 6

7 12

9 phases 3 commons (9+3=12)

9 pin 14 conductor print head

1 7

8 14

9 phases 3 commons 2 thermister points

commons phases1 2, 3, 94 5, 6, 87 12, 13, 14

24 pin printheads

saleem Printer Notes New 11

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