公开(公告)号：US10754278B2

公开(公告)日：2020-08-25

申请号：US16276321

申请日：2019-02-14

Applicant: Konica Minolta, Inc.

Inventor： Masayuki Fukunaga ,  Toshiaki Tanaka ,  Masayuki Watanabe ,  Mineo Yamamoto

IPC: G03G15/20 ,  G03G15/00

Abstract: An image forming apparatus including: a fixer that fixes a toner image formed on a recording medium by pressing and heating the recording medium nipped in a nip portion formed by causing two rotating bodies to pressedly abut on each other, and conveying the recording medium by rotating the rotating bodies; a motor that drives the rotating bodies by transmitting a torque to at least one of the rotating bodies; a torque detector that detects the torque transmitted to the rotating body by the motor; a temperature detector that detects temperature of the rotating body; a speed detector that detects a conveyance speed for conveying the recording medium by the fixer; and a controller that corrects the detected torque based on at least any one of the detected temperature and the detected conveyance speed and predicts a life of the fixer based on the corrected torque.

公开(公告)号：US09423731B2

公开(公告)日：2016-08-23

申请号：US14340803

申请日：2014-07-25

Applicant: KONICA MINOLTA, INC.

Inventor： Toshiaki Tanaka ,  Yasuhiro Ishihara ,  Toshinori Inomoto

IPC: G03G15/20 ,  G06K15/12 ,  G06K15/02

CPC classification number: G03G15/2039 ,  G03G15/205 ,  G03G2215/0132 ,  G06K15/12 ,  G06K15/1822

Abstract: An image forming apparatus forms a toner image of text on a recording sheet based on PDL data prescribing text data and one or more print conditions of thereof, and thermally fixes the toner image, and includes: condition acquisition unit analyzing the PDL data to acquire, as the conditions, one or more of character number, character spacing, and line spacing from the PDL data; judgment unit judging for each condition, by comparing the condition with reference value, the judgment indicating whether the condition is suitable for ensuring fixability of the toner image if thermally fixed at a temperature that is lower than predetermined temperature; and temperature control unit, when the judgment unit judges negatively for at least one condition, setting a fixing temperature for thermally fixing the toner image to the predetermined temperature, when the judgment unit judges affirmatively for all conditions, setting the fixing temperature to the lower temperature.

Abstract translation: 图像形成装置基于规定文本数据的PDL数据及其一个或多个打印条件在记录纸上形成文本的调色剂图像，并且对色调剂图像进行热定影，并且包括：条件获取单元，分析PDL数据， 作为条件，与PDL数据中的一个或多个字符数，字符间隔和行间距; 判断单元，通过将条件与参考值进行比较，判断条件是否适合于确保在低于预定温度的温度下热定影的调色剂图像的定影性; 和温度控制单元，当判断单元对至少一个条件判断为否定时，将用于将调色剂图像热定影的定影温度设置为预定温度，当判断单元判断所有条件时，将定影温度设定为较低温度 。

公开(公告)号：US09310727B2

公开(公告)日：2016-04-12

申请号：US14559015

申请日：2014-12-03

Applicant: Konica Minolta, Inc.

Inventor： Kosuke Masumoto ,  Toshiaki Tanaka ,  Yasuhiro Ishihara ,  Satoshi Chikazawa

IPC: G03G15/20

CPC classification number: G03G15/2039

Abstract: An image forming apparatus forming toner images sequentially on recording sheets transported at intervals, and thermally fixing the toner images by passing the recording sheets through a fixing position on a heating roller. The target fixing temperature is determined according to information of an image on each page. When a first fixing temperature for a given page is higher than a second fixing temperature for the succeeding page and the difference therebetween is greater than a predefined value, part or all of a first period, during which the thermal fixing operation for the given page is performed, and a second period, which corresponds to an interval between the two pages, are reserved for raising the surface temperature by the difference, and temperature control is performed during the reserved periods such that the surface temperature reaches the second temperature before the thermal fixing operation for the succeeding page starts.

Abstract translation: 一种图象形成装置，在间隔传送的记录片材上顺序地形成调色剂图像，并且通过使记录片材通过加热辊上的固定位置来热定影调色剂图像。 目标定影温度根据每页上的图像的信息来确定。 当给定页面的第一定影温度高于后续页面的第二定影温度并且它们之间的差异大于预定值时，第一周期的部分或全部是给定页面的热定影操作 并且对应于两页之间的间隔的第二周期被保留用于通过差异来提高表面温度，并且在预留时段期间执行温度控制，使得表面温度在热定影之前达到第二温度 启动后续页面的操作。