Blanket servicing

Patent metadata

Field	Value
Publication number	US-2022004124-A1
Application number	US-202117477089-A
Country	US
Kind code	A1
Filing date	Sep 16, 2021
Priority date	Jul 31, 2018
Publication date	Jan 6, 2022
Grant date	—

Abstract

In an example of the disclosure, a blanket servicing system includes a rotatably mounted endless cleaning surface and a scraper. The endless cleaning surface is to have a first engagement with a blanket to obtain a layer of thermoplastic print agent from the blanket. The endless cleaning surface is to have a second engagement with the blanket to receive residue from the blanket onto the layer of thermoplastic print agent. The scraper is to scrape the endless cleaning surface to transfer the residue from the endless cleaning surface to a collection element.

First claim

1 . A servicing system comprising:
an intermediate transfer member for a printing system to transfer a developed image of print agent from a photoconductor element to a print medium; and an endless cleaning surface to receive a layer of print agent and to receive residue from a surface of the intermediate transfer member to clean the intermediate transfer member.

2 . The servicing system of claim 1 , wherein the intermediate transfer member comprises a blanket wrapped on a drum.

3 . The servicing system of claim 1 , wherein the endless cleaning surface comprises a surface of a roller.

4 . The servicing system of claim 1 , wherein the endless cleaning surface comprises a surface of a belt.

5 . The servicing system of claim 1 , further comprising a scraper to engage with the endless cleaning surface and remove the layer of print agent and residue from the endless cleaning surface to a collector.

6 . The servicing system of claim 5 , further comprising a heater to heat the endless cleaning surface, wherein the scraper is positioned to engage with the endless cleaning surface while the endless cleaning surface is being heated by the heater.

7 . The servicing system of claim 5 , wherein the collector comprises a cutting member to divide the residue into pieces and collect the pieces in a collection tray.

8 . The servicing system of claim 5 , further comprising a linear track along which the scraper is moveable to traverse a width of the endless cleaning surface.

9 . The servicing system of claim 1 , further comprising a sensor to detect variance in thickness of the endless cleaning surface to determine smoothness of the endless cleaning surface.

10 . The servicing system of claim 9 , further comprising:
a scraper to engage with the endless cleaning surface and remove the print agent and residue from the endless cleaning surface to a collector; a biasing device to bias the scraper against the endless cleaning surface; and a force control to control the bias of the biasing device based on output from the sensor as to the smoothness of the endless cleaning surface.

11 . A method, comprising:
receiving a layer of print agent on an endless cleaning surface in a printing system; and with the endless cleaning surface removing residue from a surface of an intermediate transfer member to clean the surface of the intermediate transfer member at a nip between the intermediate transfer member and the endless cleaning surface.

12 . The method of claim 11 , receiving print agent and residue together from the intermediate transfer member to the endless cleaning surface.

13 . The method of claim 11 , further comprising scraping the print agent and residue from the surface of the endless cleaning surface to clean the endless cleaning surface.

14 . The method of claim 13 , further comprising heating the endless cleaning surface while performing the scraping.

15 . The method of claim 13 , further comprising biasing a scraper against the endless cleaning surface with a variable force control that is operated based on a sensed smoothness of the endless cleaning surface.

16 . The method of claim 13 , further comprising:
melting the print agent and residue; molding the melted print agent and residue; and cooling the melted print agent and residue into a hardened state.

17 . The method of claim 16 , further comprising cutting the hardened print agent and residue into pieces for collection in a collection tray.

18 . The method of claim 11 , further comprising performing cleaning of the surface of the intermediate transfer member concurrently with scraping of the endless cleaning surface to clean the endless cleaning surface.

19 . The method of claim 11 , further comprising performing cleaning of the surface of the intermediate transfer member concurrently with a printing operation in which the intermediate transfer member transfers images developed with print agent from a photoconductor element to a print medium.

20 . A servicing system comprising:
an intermediate transfer member for a printing system to transfer a developed image of print agent from a photoconductor element to a print medium; an endless cleaning surface to receive a layer of print agent and to receive residue from a surface of the intermediate transfer member to clean the intermediate transfer member; a scraper to engage with the endless cleaning surface and remove the print agent and residue from the endless cleaning surface; and a biasing device to bias the scraper against the endless cleaning surface with a variable force based on output from a sensor detecting smoothness of the endless cleaning surface.

Assignees

• Hewlett Packard Development Co

Inventors

• Kedem Amir
• Kokotov Michael
• Feygelman Alex
• Nesher Guy
• Shalem Nadav
• Vinokur Michael

Classifications

• B08B1/34

  rotating about an axis parallel to the surface · CPC title

• G03G15/161 Primary

  with means for handling the intermediate support, e.g. heating, cleaning, coating with a transfer agent · CPC title

• G03G15/11 Primary

  Removing excess liquid developer, e.g. by heat · CPC title

• G03G21/0088

  removing liquid developer · CPC title

• G03G2215/1647

  Cleaning of transfer member · CPC title