公开(公告)号：US20210200138A1

公开(公告)日：2021-07-01

申请号：US17057090

申请日：2019-09-10

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Hyun Taek OH ,  Dongwoo LEE

IPC: G03G21/10 ,  G03G15/08

Abstract: A waste toner collecting device includes a waste toner container, a detector, and an auger. The waster toner container is to collect waste toner. The detector is to detect an amount of waste toner collected and accumulated in the waste toner container. The auger is to disperse the waste toner in the waste toner container. The auger includes a first blade to transport the waste toner in a first direction toward the detector in the waste toner container, and a second blade to transport the waste toner in a second direction opposite to the first direction in the waste toner container. The second blade includes a first blade section having a waste toner transport rate greater than a waste toner transport rate of the first blade.

公开(公告)号：US20210245529A1

公开(公告)日：2021-08-12

申请号：US16973017

申请日：2018-10-12

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Heungsup PARK ,  Juntae KIM ,  Brett BUCHHOLTZ ,  Lonny MORGAN ,  Dongwoo LEE ,  Richard Lee BRINKLY ,  Kevin LO ,  Youngsu LEE ,  Kihyuk LEE

IPC: B41J11/00 ,  B41F23/04 ,  B41M7/00 ,  B41J13/076

Abstract: A heating roller for a wet ink-based image forming apparatus includes a roller having a contact surface to contact a print medium having wet ink deposited thereon by wet ink-based image forming apparatus. The heating roller conductively heats the print medium and dries and flattens the print medium. The heating roller includes a heating element embedded along the roller. The heating element rotates with the roller as the roller rotates. The heating element generates and conducts heat to the contact surface so as to conductively heat the print medium through the contact surface when the contact surface contacts the print medium.