公开(公告)号：US20170153564A1

公开(公告)日：2017-06-01

申请号：US15354401

申请日：2016-11-17

申请人： Hideaki KANAYA ,  Taichi URAYAMA ,  Ryusuke MASE ,  Hiroki ISHll ,  Hiroyuki SUGIYAMA ,  Saki IZUMI ,  Yuushi HIRAYAMA

发明人： Hideaki KANAYA ,  Taichi URAYAMA ,  Ryusuke MASE ,  Hiroki ISHll ,  Hiroyuki SUGIYAMA ,  Saki IZUMI ,  Yuushi HIRAYAMA

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G15/5058 ,  G03G21/20

摘要： An image forming apparatus includes an image bearer, a charging, a charge power supply to supply a charging bias to the charging device, a developing device, a toner adhesion amount detector, an environment detector, and a controller to determine whether to execute a charging bias adjustment process in which the charging device charges the image bearer to have different potentials, the developing device supplies the toner to the image bearer according to the different potentials, the toner adhesion amount detector detects the amount of toner adhering to the image bearer, and the controller adjusts the charging. The controller includes a memory device to store the environment data, and is configured to compare the environment data with previous environment data stored in the memory device, and determine not to execute the charging bias adjustment process when an environment change amount is not greater than a threshold.

公开(公告)号：US20160349658A1

公开(公告)日：2016-12-01

申请号：US15155317

申请日：2016-05-16

申请人： Saki IZUMI ,  Hiroyuki SUGIYAMA ,  Shunichi HASHIMOTO ,  Naoyuki OZAKI ,  Mikio ISHIBASHI ,  Kayoko TANAKA ,  Kohta FUJIMORI

发明人： Saki IZUMI ,  Hiroyuki SUGIYAMA ,  Shunichi HASHIMOTO ,  Naoyuki OZAKI ,  Mikio ISHIBASHI ,  Kayoko TANAKA ,  Kohta FUJIMORI

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G15/5058

摘要： An image forming apparatus includes a latent image bearer to rotate, an image forming unit including a charger and a developing device, a charge power supply to output a charging bias applied to a charger, a transfer device, a toner adhesion amount, and a controller. The controller causes the image forming unit to form a background fog pattern in a background area of the latent image bearer while changing a background potential, acquires toner adhesion amount values detected at different positions of the background fog pattern, having different potentials, sorts the toner adhesion amount values in an order of the background potential, determines a relation between the background potential and background fog amount based the toner adhesion amount values except any toner adhesion amount value out of monotonicity, and adjust the charging bias to an optimum value computed based on the determined relation.

摘要翻译： 图像形成装置包括要转动的潜像载体，包括充电器和显影装置的图像形成单元，用于输出施加到充电器的充电偏压的充电电源，转印装置，调色剂附着量和控制器 。 控制器使图像形成单元在改变背景电位的同时在潜像承载体的背景区域中形成背景模糊图案，获取在具有不同电位的背景模式的不同位置处检测到的调色剂附着量值，对调色剂 基于背景电位的顺序的粘附量值基于除了单调性之外的任何调色剂附着量值之外的调色剂附着量值，确定背景电位和背景灰度量之间的关系，并将充电偏压调整到基于 确定的关系。