Patents by Inventor Cheng-Wen Tsai

Cheng-Wen Tsai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8257829
    Abstract: The present invention fluorescence material has a particle diameter of the crystal area defined as dc, and the scope of dc is: 150 nm?dc?10 nm. The coat of the outside of the fluorescence material has one sheet of coating medium at least. Of course, there is at least a geometrical etching layer on the particle of the fluorescence material. The above-described structures will promote the extraction efficiency of light.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: September 4, 2012
    Assignees: Silitek Electronic (Guangzhou) Co., Ltd., Lite-On Technology Corporation
    Inventors: Yu-Sheng Tang, Shu-Fen Hu, Ru-Shi Liu, Hung-Yuan Su, Cheng-Wen Tsai
  • Patent number: 7991339
    Abstract: A fuser device used with an imaging system for setting toner on a recording media is disclosed. The fuser device includes a heating element; a rolling piece for exerting pressure on the toner adhered on the recording media; a film for clamping the recording media with the rolling piece, the film being in the heat of the heating element to set the toner on the recording media; and a control structure. The control structure has a base piece on which a first engaging portion and a second engaging portion are disposed. The heating element, the first engaging portion and the second engaging portion form a loop and the film surrounds the loop.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: August 2, 2011
    Assignees: Silitek Electronic (Guangzhou) Co., Ltd., Lite-On Technology Corporation
    Inventors: Cheng-Wen Tsai, Ming-Chun Hsu
  • Patent number: 7769331
    Abstract: A fuser assembly for an electrophotographic device includes a tubular roller, a pressing member, a pressing roller, and a heater. The pressing member is disposed in the tubular roller, and includes a tubular part that has a flat surface. The pressing roller presses the tubular roller against the flat surface of the tubular part of the pressing member. The heater is disposed in the tubular part of the pressing member.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: August 3, 2010
    Assignee: Lite-On Technology Corp.
    Inventors: Cheng-Wen Tsai, Chung-Yi Cheng, Ming-Chun Hsu, I-Chung Hou, Yu-Jen Su
  • Publication number: 20100035042
    Abstract: The present invention fluorescence material has a particle diameter of the crystal area defined as dc, and the scope of dc is: 150 nm?dc?10 nm. The coat of the outside of the fluorescence material has one sheet of coating medium at least. Of course, there is at least a geometrical etching layer on the particle of the fluorescence material. The above-described structures will promote the extraction efficiency of light.
    Type: Application
    Filed: February 9, 2009
    Publication date: February 11, 2010
    Inventors: Yu-Sheng Tang, Shu-Fen Hu, Ru-Shi Liu, Hung-Yuan Su, Cheng-Wen Tsai
  • Publication number: 20090180820
    Abstract: A fuser device used with an imaging system for setting toner on a recording media is disclosed. The fuser device includes a heating element; a rolling piece for exerting pressure on the toner adhered on the recording media; a film for clamping the recording media with the rolling piece, the film being in the heat of the heating element to set the toner on the recording media; and a control structure. The control structure has a base piece on which a first engaging portion and a second engaging portion are disposed. The heating element, the first engaging portion and the second engaging portion form a loop and the film surrounds the loop.
    Type: Application
    Filed: May 8, 2008
    Publication date: July 16, 2009
    Inventors: Cheng-Wen Tsai, Ming-Chun Hsu
  • Publication number: 20090132242
    Abstract: A portable audio recording and playback system is provided. The portable audio recording and playback system can synchronously display the corresponding lyrics or character contents, and it also can selectively record user's voice or the mixed signal of the user's voice and a background music including music and a human voice of singer during playback. Or the volume of the human voice in the background music can be increased or decreased corresponding to that of the music and be outputted or repeatedly played with changing speech speed without the tone changed for achieving the effects of on-the-go vocal and/or music accompaniment, voice recording, and language learning with changing speech speed without the tone changed.
    Type: Application
    Filed: November 19, 2007
    Publication date: May 21, 2009
    Applicant: COOL-IDEA TECHNOLOGY CORP.
    Inventors: Wei-Sheng WANG, Cheng-Wen TSAI, Szu-Hsuan WANG, Chun-Chang CHANG
  • Publication number: 20080292375
    Abstract: A pigment-adhering apparatus for the printer device is provided. The pigment-adhering apparatus includes a pressing roller having two contacting components and a feeding component between the two contacting components. The feeding component transports an printed object to be printed and the pressing roller provides a pressure to a heat conducting film. The contacting components make the heat conducting film move with the pressing roller at the same speed.
    Type: Application
    Filed: November 1, 2007
    Publication date: November 27, 2008
    Applicant: Lite-On Technology Corp.
    Inventors: Cheng-Wen Tsai, Ming-Chun Hsu, Chung-Yi Cheng
  • Publication number: 20080187371
    Abstract: A fuser assembly for an electrophotographic device includes a tubular roller, a pressing member that is disposed in the tubular roller and that has a flat surface, a pressing roller that presses the tubular roller against the flat surface of the pressing member, and a heater that is disposed in the tubular roller and that is separated from the pressing member.
    Type: Application
    Filed: July 18, 2007
    Publication date: August 7, 2008
    Inventors: Cheng-Wen Tsai, Chung-Yi Cheng, Ming-Chun Hsu, I-Chung Hou
  • Publication number: 20080187370
    Abstract: A fuser assembly for an electrophotographic device includes a tubular roller, a pressing member, a pressing roller, and a heater. The pressing member is disposed in the tubular roller, and includes a tubular part that has a flat surface. The pressing roller presses the tubular roller against the flat surface of the tubular part of the pressing member. The heater is disposed in the tubular part of the pressing member.
    Type: Application
    Filed: May 30, 2007
    Publication date: August 7, 2008
    Inventors: Cheng-Wen Tsai, Chung-Yi Cheng, Ming-Chun Hsu, I-Chung Hou, Yu-Jen Su