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    IMAGE FORMING APPARATUS
    33.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20070110457A1

    公开(公告)日：2007-05-17

    申请号：US11558731

    申请日：2006-11-10

    Applicant: Shinji KATO ,  Shin Hasegawa ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Kayoko Tanaka ,  Yuji Hirayama ,  Kazumi Kobayashi ,  Kiichirou Shimizu ,  Takashi Enami

    Inventor： Shinji KATO ,  Shin Hasegawa ,  Kohta Fujimori ,  Nobutaka Takeuchi ,  Kayoko Tanaka ,  Yuji Hirayama ,  Kazumi Kobayashi ,  Kiichirou Shimizu ,  Takashi Enami

    IPC: G03G15/08

    CPC classification number: G03G15/5041 ,  G03G15/0849 ,  G03G15/0853 ,  G03G15/0889

    Abstract: An image forming apparatus in which a predetermined image density can be obtained by correcting a toner density control target value without consuming toner. The toner density of the developer is controlled so that an output value Vt of a magnetic permeability sensor approaches a target output value Vtref. In addition, the target output value Vtref is corrected in accordance with image coverage history information of output images transferred to a transfer paper and image coverage ratio history information of output images determined from the image coverage thereof and the size of the transfer paper. This history information comprises, for example, a cumulative average value of the image coverage or the image coverage ratio per transfer paper. It may also comprise a moving average value of the image coverage or the image coverage ratio per transfer material.

    Abstract translation: 通过在不消耗调色剂的情况下校正调色剂浓度控制目标值，可以获得预定图像浓度的图像形成装置。 控制显影剂的调色剂浓度，使得磁导率传感器的输出值Vt接近目标输出值Vt 。 此外，根据传送到转印纸的输出图像的图像覆盖历史信息和从其图像覆盖确定的输出图像的图像覆盖率历史信息来校正目标输出值Vt 转印纸尺寸。 该历史信息例如包括图像覆盖的累积平均值或每个转印纸的图像覆盖率。 它还可以包括图像覆盖的移动平均值或每个转印材料的图像覆盖率。

    Inkjet Recording Apparatus
    35.
    发明申请
    Inkjet Recording Apparatus 有权
    喷墨记录装置

    公开(公告)号：US20060279594A1

    公开(公告)日：2006-12-14

    申请号：US11423845

    申请日：2006-06-13

    Applicant: Shin Hasegawa

    Inventor： Shin Hasegawa

    IPC: B41J29/38

    CPC classification number: B41J2/17509 ,  B41J2/04551 ,  B41J2/04553 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2202/06

    Abstract: An inkjet recording apparatus for recording an image on a recording medium, including a recording head, a drive circuit and a control device. The head includes an ink passage, a nozzle communicated with the passage, an actuator applying energy to ink in the passage to eject a droplet of the ink from the nozzle onto the medium. The drive circuit outputs a signal for driving the actuator to eject the ink droplet such that at least three ink droplets are ejected for printing one dot. The control device controls operation of the circuit and includes a high-temperature control portion and a low-temperature control portion. The former portion operates, in a first case where an environmental temperature is higher than a threshold, to control the circuit to output a first kind of the signal according to which a dot is formed by a number of ink droplets ejected in series and landing on the medium sequentially in the order of ejection. The latter portion operates, in a second case where the environmental temperature is not higher than the threshold, to control the circuit to output a second kind of the signal according to which a dot is formed by the same number of ink droplets as in the first case. A total ink volume of the droplets ejected according to the second kind signal is smaller than that according to the first kind signal.

    Abstract translation: 一种用于在包括记录头，驱动电路和控制装置的记录介质上记录图像的喷墨记录装置。 头部包括墨水通道，与通道连通的喷嘴，致动器向通道中的墨水施加能量以将墨滴从喷嘴喷射到介质上。 驱动电路输出用于驱动致动器的信号以喷射墨滴，使得喷射至少三个墨滴以打印一个点。 控制装置控制电路的操作，并且包括高温控制部分和低温控制部分。 前一部分在环境温度高于阈值的第一种情况下操作，以控制电路输出第一种信号，根据该信号，通过串联喷射的多个墨滴形成点，并着陆 介质依次排列。 后一部分在环境温度不高于阈值的第二种情况下操作，以控制电路输出第二类信号，根据该信号，通过与第一种相同数量的墨滴形成点 案件。 根据第二种信号喷射的液滴的总墨水体积小于根据第一种信号的液滴的总墨水体积。

    Printing device with print density changing function
    38.
    发明授权
    Printing device with print density changing function 失效
    具有打印浓度变化功能的打印设备

    公开(公告)号：US06325478B1

    公开(公告)日：2001-12-04

    申请号：US09058824

    申请日：1998-04-13

    Applicant: Koji Imai ,  Shin Hasegawa

    Inventor： Koji Imai ,  Shin Hasegawa

    IPC: B41J2205

    CPC classification number: B41J2/04551 ,  B41J2/0457 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/2132 ,  B41J2202/10

    Abstract: When the printing instruction is issued in S100, it is judged in S110 whether the present mode is the printer mode. When the present mode is not set to the printer mode, it is judged in S120 whether the present mode is set to the facsimile mode. When the present mode is set to the facsimile mode, the driving waveform of the driving signal is set in S130 into a multi-pulse, comprised of two pulses, for every single set of print data. In S140, printing operation is performed with the multi-pulse driving signal. Accordingly, ink droplets are ejected twice from a single nozzle for a single set of data. Thus, the print density of the obtained image is increased.

    Abstract translation: 当在S100中发出打印指令时，在S110中判断当前模式是否是打印机模式。 当当前模式未设置为打印机模式时，在S120中判断是否将当前模式设置为传真模式。 当当前模式被设置为传真模式时，对于每一组打印数据，驱动信号的驱动波形在S130中被设置为由两个脉冲组成的多脉冲。 在S140中，利用多脉冲驱动信号执行打印操作。 因此，对于一组数据，墨滴从单个喷嘴喷射两次。 因此，所获得的图像的打印浓度增加。

    Image density control method for an image forming apparatus for reducing background contamination of a photoconductive drum
    39.
    发明授权
    Image density control method for an image forming apparatus for reducing background contamination of a photoconductive drum 失效
    用于减少感光鼓的背景污染的图像形成装置的图像浓度控制方法

    公开(公告)号：US5198861A

    公开(公告)日：1993-03-30

    申请号：US826619

    申请日：1992-01-28

    Applicant: Shin Hasegawa ,  Hajime Oyama ,  Eiichi Katoh ,  Masao Moriya

    Inventor： Shin Hasegawa ,  Hajime Oyama ,  Eiichi Katoh ,  Masao Moriya

    IPC: G03G15/00 ,  G03G15/06 ,  G03G15/08 ,  G03G21/00

    CPC classification number: G03G15/0855 ,  G03G15/5041 ,  G03G2215/00042

    Abstract: An image density control method for an image forming apparatus determines the density of a toner image formed on a photoconductive element by a reflection type photosensor and, if the density is low, supplies a toner to a developing unit. A latent image representative of a reference pattern is electrostatically formed on the photoconductive element and then developed by a toner supplied from the developing unit. The supply of a toner to the developing unit is controlled on the basis of the outputs of the sensor associated with the area of the photoconductive element where the pattern image exists and a non-image area. A particular bias voltage is applied to the developing unit for each of the image area and non-image area.

    Abstract translation: 用于图像形成装置的图像浓度控制方法通过反射型光电传感器确定在感光体上形成的调色剂图像的浓度，并且如果浓度低，则向显影单元供应调色剂。 代表参考图案的潜像被静电地形成在光电导元件上，然后由从显影单元供应的调色剂显影。 基于与存在图案图像的光电导元件的区域和非图像区域相关联的传感器的输出来控制向显影单元供应调色剂。 对于图像区域和非图像区域中的每一个，特定的偏置电压被施加到显影单元。

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