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    • 2. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2013250363A
    • 2013-12-12
    • JP2012123922
    • 2012-05-31
    • Sharp Corpシャープ株式会社
    • TSURUTA KENTARO
    • G03G15/00B41J2/44G03G15/04G03G15/043G03G21/00G03G21/14
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of extending a period when an LD is usable after detection of deterioration in laser light quantity of the LD due to secular change.SOLUTION: An image forming apparatus 100 includes: a light emission section 93 for emitting light beams for forming an image of a prescribed printing density on a photoreceptor; a light quantity detection section 94 for detecting the light quantity of the light beams emitted by a light emission section 93; a light quantity adjusting section 190 for adjusting the light quantity of the light emission section 93 to a second value which is lower than a first value when the light quantity of the light beam has lowered to be less than the first value due to deterioration of a light emission section; and an image forming section 110 for forming an image on a photoreceptor drum 3A by varying an image forming condition so that the light quantity of the light emission section 93 has the same printing density as when the light quantity is the first value or more after the light quantity adjustment is carried out by a light quantity adjustment section 190 and scanning the light beam emitted from the light emission section 93.
    • 要解决的问题:提供一种图像形成装置100,其能够在检测到由于长期变化引起的LD的激光的劣化后能够延长LD的周期。解决方案:图像形成装置100包括:发光部 93,用于发射用于在感光体上形成规定的印刷浓度的图像的光束; 用于检测由发光部93发射的光束的光量的光量检测部94; 光量调节部分190,用于当光束的光量由于a的劣化而使光束的光量降低到小于第一值时,将发光部分93的光量调节到低于第一值的第二值 发光部分; 以及图像形成部分110,用于通过改变图像形成条件在感光鼓3A上形成图像,使得发光部分93的光量具有与光量在第一或更多个之后的光量相同的打印密度 光量调节由光量调节部190进行,并对从发光部93发射的光进行扫描。
    • 3. 发明专利
    • Electromagnetic locking device and image forming apparatus
    • 电磁锁定装置和图像形成装置
    • JP2008261939A
    • 2008-10-30
    • JP2007103082
    • 2007-04-10
    • Sharp Corpシャープ株式会社
    • KISHIMOTO TAKESHITSURUTA KENTAROTOYODA MASASHI
    • G03G21/00E05B47/00G03G21/14
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus that reduces power consumed to drive an electromagnetic lock. SOLUTION: The image forming apparatus 100 includes a storing section 1, an opening/closing sensor 11, an electromagnetic lock 30, and a switch control section 10. The storing section 1 has opening/closing doors 2 and 3, and accommodates therein a battery 22 that stores electric charges. The opening/closing sensor 11 detects an opening state of the opening/closing door 2. The electromagnetic lock 30 keeps the opening/closing door 3 locked while a drive current is supplied. When the opening/closing sensor 11 detects the opening state of the opening/closing door 2, the switch control section 10 supplies the electronic lock 30 with electric charges stored in the battery 22. The electronic lock 30 receives driving power from the battery 22 and locks the opening/closing door 3. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种降低驱动电磁锁的消耗功率的图像形成装置。 解决方案:图像形成装置100包括存储部分1,打开/关闭传感器11,电磁锁30和开关控制部分10.存储部分1具有打开/关闭门2和3,并且容纳 其中存储电荷的电池22。 打开/关闭传感器11检测打开/关闭门2的打开状态。电磁锁30在提供驱动电流的同时使打开/关闭门3保持锁定。 当开/关传感器11检测到打开/关闭门2的打开状态时,开关控制部分10向电子锁30提供存储在电池22中的电荷。电子锁30从电池22接收驱动电力, 锁定开/关门3.版权所有(C)2009,JPO&INPIT
    • 4. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2008225347A
    • 2008-09-25
    • JP2007067018
    • 2007-03-15
    • Sharp Corpシャープ株式会社
    • NAKAZAWA MASANORITSURUTA KENTAROKAJIWARA JUNICHI
    • G03G21/00H02M3/155
    • G03G15/5004G03G15/2039G03G2215/00983
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus by which shortage of a power supply amount to a fixing means during continuous printing is attained with simple structure. SOLUTION: A switching control part 50 controls a fixing driving circuit 18, a second connection part 12, a third connection part 14 and a fourth connection part 16. The switching control part 50 switches connection states of the second connection part 12, the third connection part 14 and the fourth connection part 16 on the basis of a connection state of the fixing driving part 18. For example, the switching control part 50 switches the second connection part 12 and the third connection part 14 to the non-connected state and switches the fourth connection part 16 to the connection state when the fixing driving part is in the connection state. The second connection part 12 and the third connection part 14 are switched to the connection state when the fixing driving part 18 is in the non-connected state and the fourth connection part 16 is switched to the non-connection state. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种图像形成装置,其中以简单的结构获得连续打印期间对定影装置的供电量的不足。 解决方案:切换控制部分50控制定影驱动电路18,第二连接部分12,第三连接部分14和第四连接部分16.切换控制部分50切换第二连接部分12的连接状态, 第三连接部14和第四连接部16,基于固定驱动部18的连接状态。例如,切换控制部50将第二连接部12和第三连接部14切换为不连接 并且当固定驱动部处于连接状态时将第四连接部16切换到连接状态。 当固定驱动部18处于非连接状态并且第四连接部16切换到非连接状态时,第二连接部12和第三连接部14切换到连接状态。 版权所有(C)2008,JPO&INPIT
    • 5. 发明专利
    • Optical scanner and image forming apparatus using the same
    • 光学扫描仪和使用其的图像形成装置
    • JP2008164669A
    • 2008-07-17
    • JP2006350951
    • 2006-12-27
    • Sharp Corpシャープ株式会社
    • MOTOYAMA TAKAHARUYAMADA YORIHISAODA AYUMISHIRAI NOBUHIROTSURUTA KENTARO
    • G03G21/20
    • PROBLEM TO BE SOLVED: To provide an optical scanner which is saved in occupancy space and power consumption, and can prevent dew condensation in an image forming section so as to form proper image. SOLUTION: In an exposure unit 1, in which a laser scanning unit 101 emitting laser beam, a polygon mirror 102 for reflecting and deflecting the laser beam, reflecting mirrors 103a, 103b, 103c, 103d, 104a, 104b and 104c for irradiating a photoreceptor drum 3 with the laser beams, and the like are arranged in a housing 1a, a sheet-like heater 130 is provided between a dustproof glass for scattered dust 120, which is disposed on the boundary between the inside and outside of the housing 1a and through which the leaser light can pass and the housing 1a. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种保存在占用空间和功耗中的光学扫描仪,并且可以防止图像形成部分中的结露,从而形成适当的图像。 解决方案:在其中发射激光束的激光扫描单元101,用于反射和偏转激光束的多面反射镜102的反射镜103a,103b,103c,103d,104a,104b和104c的曝光单元1中,用于 用激光束照射感光鼓3等设置在壳体1a中,片状加热器130设置在散布灰尘的防尘玻璃120之间,该防尘玻璃设置在内部和外部的边界上 外壳1a,并且通过它可以通过激光灯和外壳1a。 版权所有(C)2008,JPO&INPIT
    • 6. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2009220537A
    • 2009-10-01
    • JP2008070518
    • 2008-03-19
    • Sharp Corpシャープ株式会社
    • TSURUTA KENTAROINOUE KIYOSHIMOTOHASHI MUNEYUKI
    • B41J2/44G03G21/14H01S5/062
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus which can form an image of a high grade by keeping an image density while extending the service life of light emitting elements. SOLUTION: This image forming apparatus 100 scans the surfaces of photo-conductor drums 131A to 131D by laser diodes 1A to 1D. The laser diodes 1A to 1D are driven conforming to the image data of each color. Current controlling circuits 32A to 32D make the laser diodes 1A to 1D emit light by each set light amount by adjusting the driving current values of the laser diodes 1A and 1D. A subsidiary CPU 29 resets the set light amount to a reduced one when the driving current value exceeds a threshold value, and increases an exposure time per pixel in response to the reduction of the set light amount. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够通过保持图像浓度同时延长发光元件的使用寿命来形成高等级的图像的图像形成装置。 解决方案:该成像设备100通过激光二极管1A至1D扫描光导体鼓131A至131D的表面。 激光二极管1A至1D被驱动为符合每种颜色的图像数据。 电流控制电路32A至32D通过调节激光二极管1A和1D的驱动电流值,使激光二极管1A至1D通过每设定光量发光。 辅助CPU29当驱动电流值超过阈值时将设定光量重置为减小量,并且响应于设定光量的减少而增加每像素的曝光时间。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • Led head controller
    • LED头控制器
    • JP2003032441A
    • 2003-01-31
    • JP2001217208
    • 2001-07-17
    • Sharp Corpシャープ株式会社
    • YOSHIDA SEIICHIONISHI KAZUYUKITSURUTA KENTARO
    • B41J2/44B41J2/45B41J2/455H04N1/036
    • PROBLEM TO BE SOLVED: To transfer pixel data in order suited to a matrix after a change without redesigning a circuit configuration for determining the transfer order of the pixel data even when the configuration of the matrix of LED heads is changed. SOLUTION: This device is provided with 1/4 line memories 12a-12d for storing pixel data for one line held in a line buffer 11 while dividing the data for each 1/4 line, a RAM 13 storing image number information for specifying four pieces of pixel data to be simultaneously transferred to an LED head 2 in the storage area of each of addresses in the order of location matched to the transfer order, and an address controller 14 for supplying address data AD, which are incremented synchronously to a system clock SC, to the RAM 13. The image number information of the storage area specified by the address data AD is outputted to the 1/4 line memories 12a-12d by the RAM 13, and pixel data DDa-DDd corresponding to the image number information are transferred from the 1/4 line memories 12a-12d.
    • 要解决的问题:即使在LED头的矩阵的配置改变时,也可以在更改之后不改变用于确定像素数据的传送顺序的电路配置来转移适合矩阵的像素数据。 解决方案:本装置具有1/4行存储器12a-12d,用于存储保持在行缓冲器11中的一行的像素数据,同时分割每1/4行的数据;存储图像号信息的RAM13,用于指定四个 的像素数据被同时传送到与传送顺序相匹配的位置的每个地址的存储区域中的LED头2;以及地址控制器14,用于提供与系统时钟同步递增的地址数据AD 由RAM13输出由地址数据AD指定的存储区域的图像号码信息,并将与图像号码信息对应的像素数据DDa-DDd输出到RAM13。 从1/4行存储器12a-12d传送。
    • 8. 发明专利
    • Optical scanner and image forming device with the same
    • 光学扫描仪和图像形成装置
    • JP2010137481A
    • 2010-06-24
    • JP2008317792
    • 2008-12-15
    • Sharp Corpシャープ株式会社
    • TSURUTA KENTAROINOUE KIYOSHIMOTOHASHI MUNEYUKI
    • B41J2/44G02B26/10H01S5/0683H04N1/113
    • PROBLEM TO BE SOLVED: To provide an optical scanner and an image forming device capable of stabilizing the light quantity of a semiconductor laser even in the case where fluctuational voltage is generated in a voltage source connected to the semiconductor laser or a semiconductor laser driving circuit.
      SOLUTION: The optical scanner 10 has a comparing section 72, a set value adjusting section 77, a current value adjusting section 95, and a driving current adjusting section 70. The comparing section 72 compares a voltage value of the voltage source connected to a laser diode 74 and the set voltage value of the voltage source. The set value adjusting section 77 adjusts the set value of the driving current to be supplied to the laser diode 74 according to the light quantity detected by a photodiode 76 for detecting the light quantity of the laser diode 74. The current value adjusting section 95 adjusts the current value supplied to the laser diode 74. The driving current adjusting section 70 controls the current value adjusting section 95 from the comparing result of the comparing section 72 and the set value adjusted by the set value adjusting section 77.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:即使在连接到半导体激光器或半导体激光器的电压源中产生波动电压的情况下,也可以提供能够稳定半导体激光器的光量的光学扫描器和图像形成装置 驱动电路。 解决方案:光学扫描器10具有比较部分72,设定值调节部分77,电流值调节部分95和驱动电流调节部分70.比较部分72比较连接的电压源的电压值 激光二极管74和电压源的设定电压值。 设定值调整部77根据用于检测激光二极管74的光量的光电二极管76检测出的光量,调整向激光二极管74供给的驱动电流的设定值。电流值调整部95调整 提供给激光二极管74的电流值。驱动电流调节部分70根据比较部分72的比较结果和由设定值调节部分77调整的设定值来控制电流值调节部分95.版权所有: (C)2010,JPO&INPIT
    • 9. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2006011148A
    • 2006-01-12
    • JP2004189776
    • 2004-06-28
    • Sharp Corpシャープ株式会社
    • TOYODA MASASHINAKANISHI YASUSHIMASHIBA TAMAKIHOSHIAI NORIYUKIOHASHI JUNJITSURUTA KENTAROKISHIMOTO TAKESHINAKAGAWA RYOICHI
    • G03G21/20
    • PROBLEM TO BE SOLVED: To provide a copier capable of effectively preventing the increase in in-machine temperature due to the heat capacity of a scanner part and a printing part and in-machine contamination due to contaminating substance, even when an optionally installed paper feed unit is operated. SOLUTION: When the paper feed unit 51 is made in an active state in reply to the demand to form an image on an image forming paper of B4, the power consumption required to operate the scanner part 2, an image forming system 31, a paper transporting system 32 and the paper feed unit is fetched out of a memory 9, and power supply to respective fans 71 to 73 is controlled by a controller 8 so as to be set about 70%. Further, when the temperature of a power source substrate 69 is equal to or exceeding a prescribed temperature and also the paper feed unit is in an active state, the power supply is controlled as follows: the power supply to a 1st and 2nd fans for cooling the heat roller 39a and the power source substrate is set to be about 60% among 70% of the power supply to be supplied to respective fans, and the power supply to a 3rd fan for cooling the exposure light source 21 of the scanner part is set to be about remaining 40%. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种能够有效地防止由于扫描仪部件和打印部件的热容量引起的机内温度升高和由于污染物质引起的机内污染的复印机,即使当可选地 安装了进纸单元。 解决方案:当供纸单元51响应于在B4的图像形成纸上形成图像的需求而使得进纸单元51处于活动状态时,操作扫描仪部件2所需的功率消耗,图像形成系统31 将纸张传送系统32和供纸单元从存储器9中取出,并且通过控制器8控制对各个风扇71至73的电力供给,使其设定为约70%。 此外,当电源基板69的温度等于或超过规定温度并且供纸单元处于活动状态时,电源被控制如下:向第一和第二风扇供电以供冷却 在供给到各个风扇的电源的70%中,热辊39a和电源基板被设定为约60%,并且用于冷却扫描仪部件的曝光光源21的第三风扇的电力供应是 设定约为40%。 版权所有(C)2006,JPO&NCIPI
    • 10. 发明专利
    • Sheet feeding device, and image forming device
    • 片材进给装置和图像形成装置
    • JP2005138914A
    • 2005-06-02
    • JP2003374384
    • 2003-11-04
    • Sharp Corpシャープ株式会社
    • TSURUTA KENTAROMASHIBA TAMAKI
    • B65H1/14
    • PROBLEM TO BE SOLVED: To provide a sheet feeding device, and an image forming device provided with the same, capable of determining if a load to be lifted by a lift-up means is large or not by detecting the weight of the sheet stored in the sheet placing part without setting the size of the sheet, and securely conducting control in accordance with the load.
      SOLUTION: In a case where stacked quantity is small, the load of paper positioned at the lowest part when a jam is generated is detected by a stacked quantity detector 55 provided at a center lower part of a paper stacking plate 51 in accordance with the contracting degree of a spring 53. Rising speed from the position of the lowest part to the position of paper feeding action is controlled by a control part 50 based on the detected load. In this case, the load is small, and the paper stacking plate 51 containing a plurality of sheets rises at first speed that is fast by a lift motor 39. In a case where the stacked quantity is large, the load is large, and the paper stacking plate 51 containing a plurality of sheets rises at second speed that is low by the lift motor 39.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供一种片材馈送装置和具有该片材馈送装置的图像形成装置,能够通过检测提升装置的重量来确定提升装置要提升的载荷是否大 而不设置纸张的尺寸而存储在纸张放置部分中的纸张,并且根据负载可靠地进行控制。 解决方案:在堆积量小的情况下,通过设置在纸堆叠板51的中央下部的堆叠量检测器55来检测位于产生卡住的最下部的纸张的负载 具有弹簧53的收缩程度。从控制部件50基于检测到的负载来控制从最低部分位置到送纸动作位置的上升速度。 在这种情况下,负载很小,并且包含多个纸张的纸张堆叠板51以提升电动机39的快速的第一速度上升。在堆积量大的情况下,负载大,并且 包含多个纸张的纸张堆叠板51以提升电动机39的低速度升高。(C)版权所有(C)2005,JPO&NCIPI