射组合式光电传感器，这种传感器在方形外壳的一端开有窗口，发射管和接收管在同一端面，接收管接收被测反射
she zu he shi guang dian chuan gan qi zhe zhong chuan gan qi zai fang xing wai ke de yi duan kai you chuang kou fa she guan he jie shou guan zai tong yi duan mian jie shou guan jie shou bei ce fan she
收三极管。这种形式的传感器多用来分辨镜头、底片夹、机器器件的复位、计数等地方的信号传感。第二种：是反
shou san ji guan zhe zhong xing shi de chuan gan qi duo yong lai fen bian jing tou di pian jia ji qi qi jian de fu wei ji shu deng di fang de xin hao chuan gan di er zhong shi fan
： 第一种：是透射组合式光电传感器，这种结构是一个u型塑料外壳，一端是红外发射二极管，另一端是光电接
di yi zhong shi tou she zu he shi guang dian chuan gan qi zhe zhong jie gou shi yi ge u xing su liao wai ke yi duan shi hong wai fa she er ji guan ling yi duan shi guang dian jie
它没有机械动作，没有触点，具有体积小、隔离好、寿命长、测量无接触、可靠性高等特点。它的结构有三大类型
ta mei you ji xie dong zuo mei you chu dian ju you ti ji xiao ge li hao shou ming chang ce liang wu jie chu ke kao xing gao deng te dian ta de jie gou you san da lei xing
这是彩扩机中用得最多的传感器之一，这是一种新型器件，采用红外线作信息传递介质，不会使用感光材料感光。
zhe shi cai kuo ji zhong yong de zui duo de chuan gan qi zhi yi zhe shi yi zhong xin xing qi jian cai yong hong wai xian zuo xin xi chuan di jie zhi bu hui shi yong gan guang cai liao gan guang
高温高湿)也没影响。缺点是怕外界磁场的干扰，引出线不能有较大的应力，触点电流不能太大。3.光电传感器
gao wen gao shi ) ye mei ying xiang que dian shi pa wai jie ci chang de gan rao yin chu xian bu neng you jiao da de ying li chu dian dian liu bu neng tai da 3. guang dian chuan gan qi
这就形成一个电磁继电器。干簧管触点镀有导电性能好的贵金属，又密封在玻璃管内，可靠性高，外界环境恶劣(
zhe jiu xing cheng yi ge dian ci ji dian qi gan huang guan chu dian du you dao dian xing neng hao de gui jin shu you mi feng zai bo li guan nei ke kao xing gao wai jie huan jing e lie (
导向翻板等传感器就是干簧管和永久磁铁。另一种是干枣强吧簧管外加一个线圈，当线圈通电形成磁场而使干簧管导通，
dao xiang fan ban deng chuan gan qi jiu shi gan huang guan he yong jiu ci tie ling yi zhong shi gan zao qiang ba huang guan wai jia yi ge xian quan dang xian quan tong dian xing cheng ci chang er shi gan huang guan dao tong
有两种外界磁场，一种是用永久磁铁，如冲卷机暗箱门开关、浮子式液面计、机器的防光档板等，有些机器的相纸
you liang zhong wai jie ci chang yi zhong shi yong yong jiu ci tie ru chong juan ji an xiang men kai guan fu zi shi ye mian ji ji qi de fang guang dang ban deng you xie ji qi de xiang zhi
磁性材料所做的枣强吧触点，当外界磁场增强，顺磁物质互相吸引接通，当失去磁场后靠弹性恢复原状断开。一般情况下
ci xing cai liao suo zuo de zao qiang ba chu dian dang wai jie ci chang zeng qiang shun ci wu zhi hu xiang xi yin jie tong dang shi qu ci chang hou kao dan xing hui fu yuan zhuang duan kai yi ban qing kuang xia
触点接触电阻过大造成的，需要清洗或更换。2.干簧管传感器干簧管是一个密封玻璃管，内有两条距离很小的顺
chu dian jie chu dian zu guo da zao cheng de xu yao qing xi huo geng huan 2. gan huang guan chuan gan qi gan huang guan shi yi ge mi feng bo li guan nei you liang tiao ju li hen xiao de shun
出现的问题一是固定不准确，这是固定罗丝松动后传感器位置发生了改变，需调整好再紧固。二是使用时间长，接
chu xian de wen ti yi shi gu ding bu zhun que zhe shi gu ding luo si song dong hou chuan gan qi wei zhi fa sheng le gai bian xu diao zheng hao zai jin gu er shi shi yong shi jian chang jie
般用它来识别镜头、枣强吧底片夹、纸箱；也可以用来测量有无相纸、相纸到达位置、机械的初始位置等。开关传感器易
ban yong ta lai shi bie jing tou zao qiang ba di pian jia zhi xiang ye ke yi yong lai ce liang you wu xiang zhi xiang zhi dao da wei zhi ji xie de chu shi wei zhi deng kai guan chuan gan qi yi
关传感器为最多，也有行程开关或其它开关。这些开关类传感器可靠性高、寿命长、成本低，是很好的传感器，一
guan chuan gan qi wei zui duo ye you hang cheng kai guan huo qi ta kai guan zhe xie kai guan lei chuan gan qi ke kao xing gao shou ming chang cheng ben di shi hen hao de chuan gan qi yi
将一枣强吧些常见的电器元件的性能和特点介绍一下：1.开关传感器胶片冲洗机使用了较多的开关类传感器，以微动开
jiang yi zao qiang ba xie chang jian de dian qi yuan jian de xing neng he te dian jie shao yi xia 1. kai guan chuan gan qi jiao pian chong xi ji shi yong le jiao duo de kai guan lei chuan gan qi yi wei dong kai
电子器件；二是指电子线路板。电子线路板的专业性很强，一般应由专业人员修理，在此只谈第一部分的修理。现
dian zi qi jian er shi zhi dian zi xian lu ban dian zi xian lu ban de zhuan ye xing hen qiang yi ban ying you zhuan ye ren yuan xiu li zai ci zhi tan di yi bu fen de xiu li xian
污染。b.电器部分的修理所说的电器部分包括两部分，一是指各种传感器枣强吧、电机、电磁铁、电加热器、继电器等
wu ran b. dian qi bu fen de xiu li suo shuo de dian qi bu fen bao kuo liang bu fen yi shi zhi ge zhong chuan gan qi zao qiang ba dian ji dian ci tie dian jia re qi ji dian qi deng
是安装调试不当，还是负荷过大造成，并及时排除。在显影等药槽中，更换代用零件时要注意防腐问题，避免药液
shi an zhuang diao shi bu dang hai shi fu he guo da zao cheng bing ji shi pai chu zai xian ying deng yao cao zhong geng huan dai yong ling jian shi yao zhu yi fang fu wen ti bi mian yao ye
后，用更换零件的办法解决比较容易。进一枣强吧步的检修应该找出造成零件损坏的原因，比如齿轮损坏，是自然磨损还
hou yong geng huan ling jian de ban fa jie jue bi jiao rong yi jin yi zao qiang ba bu de jian xiu ying gai zhao chu zao cheng ling jian sun huai de yuan yin bi ru chi lun sun huai shi zi ran mo sun hai
三、设备修理a.机械故障的修理在彩扩设备故障中机械问题较多见，故障较直观，一般比较容易查找。故障找出
san she bei xiu li a. ji xie gu zhang de xiu li zai cai kuo she bei gu zhang zhong ji xie wen ti jiao duo jian gu zhang jiao zhi guan yi ban bi jiao rong yi cha zhao gu zhang zhao chu