一、針式打印機打印原理是什么
針式(shi)打(da)(da)印機主要(yao)用于完成各項單據(ju)的(de)復寫，為用戶提供高效的(de)服務，它的(de)作用是(shi)噴(pen)墨打(da)(da)印技(ji)術和激光(guang)打(da)(da)印技(ji)術無法(fa)實(shi)現的(de)，那么針式(shi)打(da)(da)印機的(de)原理(li)是(shi)什么呢？
針式(shi)打(da)(da)(da)(da)印(yin)(yin)(yin)機是壓感式(shi)打(da)(da)(da)(da)針，通過打(da)(da)(da)(da)印(yin)(yin)(yin)頭中的(de)針擊(ji)打(da)(da)(da)(da)復寫紙，打(da)(da)(da)(da)印(yin)(yin)(yin)時打(da)(da)(da)(da)印(yin)(yin)(yin)針頭彈出，將色帶顏(yan)色打(da)(da)(da)(da)印(yin)(yin)(yin)到紙張上(shang)，打(da)(da)(da)(da)印(yin)(yin)(yin)過程(cheng)中針頭會一(yi)直對(dui)紙張施加壓力，可(ke)以使(shi)多層的(de)復寫紙打(da)(da)(da)(da)印(yin)(yin)(yin)出同(tong)樣的(de)效(xiao)果，所(suo)以除了第一(yi)張紙上(shang)的(de)字跡來自于色帶的(de)油墨外(wai)，下層紙張也會同(tong)時顯(xian)示出字跡，從而實現了多聯打(da)(da)(da)(da)印(yin)(yin)(yin)。
二、針式打印機無法打印如何解決
針式打(da)印機用來打(da)印各種票據、多(duo)(duo)份聯打(da)是很方(fang)便(bian)的，在使用針式打(da)印機的時(shi)候，有(you)時(shi)會遇到無法(fa)打(da)印的問(wen)題，可能的故障原因(yin)有(you)很多(duo)(duo)，一般(ban)是電路問(wen)題，可以(yi)(yi)采取以(yi)(yi)下方(fang)法(fa)排查故障并解(jie)決：
1、首先檢查電(dian)(dian)源電(dian)(dian)路(lu)(lu)板(ban)與主(zhu)板(ban)連線是否正確連接(jie)（連線是否插反(fan)或斜(xie)接(jie)或虛接(jie)），如(ru)果(guo)電(dian)(dian)源電(dian)(dian)路(lu)(lu)板(ban)與主(zhu)板(ban)連線接(jie)觸不良(liang)，重新(xin)插好連線。
2、如(ru)果(guo)電(dian)源電(dian)路板(ban)(ban)與主(zhu)板(ban)(ban)連(lian)線正常，接著檢查主(zhu)板(ban)(ban)與控制面板(ban)(ban)的連(lian)線是否正常，如(ru)果(guo)不正常，將連(lian)線重新(xin)連(lian)接好。
3、如果主板與(yu)控制面板的連線正(zheng)常，接著檢查電源開(kai)關是否正(zheng)常，發(fa)現電源開(kai)關損壞，則更換電源開(kai)關。
4、如(ru)果(guo)電(dian)(dian)(dian)源開關(guan)正(zheng)常(chang)，接著斷開電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)(ban)與主板(ban)(ban)(ban)的連接，然后(hou)接入(ru)220V，用(yong)萬用(yong)表檢(jian)(jian)測電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)(ban)的直流輸(shu)(shu)出電(dian)(dian)(dian)壓是(shi)(shi)否正(zheng)常(chang)；如(ru)果(guo)電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)(ban)輸(shu)(shu)出電(dian)(dian)(dian)壓不正(zheng)常(chang)，則電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)(ban)損(sun)壞，檢(jian)(jian)查電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)(ban)開關(guan)是(shi)(shi)否損(sun)壞，如(ru)果(guo)損(sun)壞，更換電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)(ban)開關(guan)。
5、如果(guo)電源(yuan)電路板(ban)開關正常，接著檢測(ce)電源(yuan)電路板(ban)中的初級電路的保險管(guan)F1是(shi)否熔斷(duan)。如果(guo)保險管(guan)F1熔斷(duan)，檢查電源(yuan)電路板(ban)其余(yu)電路是(shi)否存(cun)在短路問(wen)題，如果(guo)沒(mei)有(you)可以更換F1。
6、如果保險管正常(chang)，接著檢查電(dian)源電(dian)路(lu)板(ban)中的開關管、二極(ji)管、整流(liu)橋(qiao)電(dian)路(lu)等是否(fou)正常(chang)，如果不正常(chang)，更換損壞的元器(qi)件或電(dian)源電(dian)路(lu)板(ban)。
7、如果(guo)第4步(bu)中測量的(de)電(dian)(dian)(dian)源輸出(chu)(chu)電(dian)(dian)(dian)壓(ya)正常(chang)，接著將電(dian)(dian)(dian)機連線(xian)(xian)、頭纜線(xian)(xian)、傳感器線(xian)(xian)從(cong)主(zhu)板上(shang)撥下(xia)，只連電(dian)(dian)(dian)源電(dian)(dian)(dian)路板線(xian)(xian)及控制面(mian)板電(dian)(dian)(dian)纜線(xian)(xian)，然(ran)后接通電(dian)(dian)(dian)源，看控制面(mian)板的(de)電(dian)(dian)(dian)源指(zhi)示燈(deng)是(shi)否(fou)亮，如果(guo)控制面(mian)板電(dian)(dian)(dian)源指(zhi)示燈(deng)顯示有電(dian)(dian)(dian)，說明主(zhu)板正常(chang)，問題出(chu)(chu)在外圍電(dian)(dian)(dian)氣部(bu)件。
8、外圍電氣部件的檢查首先檢測字車電機和走紙電機是否燒毀，如果燒毀，更換損壞的電機；如果字車電機和走紙電機正常，接著檢查打印頭纜線是否正常（有無磨損、斷線等造成短路），如果不正常，更換打印頭線纜；如果打印頭線纜正常，接著將打印頭取下，然后加電，看打印機是否有顯示。如果針式打印機有電，說明打(da)(da)印(yin)頭內部(bu)有短路(lu)（打(da)(da)印(yin)頭線圈、針驅動(dong)管(guan)或芯片(pian)2B短路(lu)），更(geng)換短路(lu)的(de)部(bu)件(jian)或更(geng)換打(da)(da)印(yin)頭；如果取下打(da)(da)印(yin)頭后，故障依舊，接著檢查傳(chuan)感器，并更(geng)換短路(lu)的(de)傳(chuan)感器。
9、如(ru)果(guo)(guo)(guo)控制面板(ban)(ban)電(dian)源指示(shi)燈無(wu)顯示(shi)，則檢(jian)查主(zhu)(zhu)板(ban)(ban)中(zhong)的(de)芯(xin)片是(shi)否(fou)(fou)有被燒壞的(de)痕(hen)跡（如(ru)開裂、發燙等），如(ru)果(guo)(guo)(guo)有，檢(jian)查異常的(de)芯(xin)片，如(ru)果(guo)(guo)(guo)芯(xin)片損壞，更(geng)換(huan)芯(xin)片；如(ru)果(guo)(guo)(guo)沒(mei)有被燒壞的(de)芯(xin)片，接(jie)著測量主(zhu)(zhu)板(ban)(ban)上5V電(dian)源對地阻值(zhi)，判斷主(zhu)(zhu)板(ban)(ban)是(shi)否(fou)(fou)短(duan)路(lu)(lu)，如(ru)果(guo)(guo)(guo)主(zhu)(zhu)板(ban)(ban)短(duan)路(lu)(lu)，維修(xiu)或更(geng)換(huan)主(zhu)(zhu)板(ban)(ban)；如(ru)果(guo)(guo)(guo)主(zhu)(zhu)板(ban)(ban)沒(mei)有短(duan)路(lu)(lu)，接(jie)著檢(jian)查主(zhu)(zhu)板(ban)(ban)中(zhong)的(de)門(men)陣列電(dian)路(lu)(lu)、CPU等其(qi)他元器(qi)件是(shi)否(fou)(fou)損壞，如(ru)果(guo)(guo)(guo)損壞，更(geng)換(huan)損壞的(de)元器(qi)件；如(ru)果(guo)(guo)(guo)主(zhu)(zhu)板(ban)(ban)中(zhong)沒(mei)有損壞的(de)元器(qi)件，最后更(geng)換(huan)主(zhu)(zhu)板(ban)(ban)。
