# US 5,710,955 A · Electrostatic latent image developing device and toner cartridge used therefor

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,710,955 A
- Document ID: US5710955A
- Status: Granted
- Kind: A
- Application number: 08/646,135
- Filed: 1996-05-07
- Granted: 1998-01-20
- Earliest claimed: 1993-11-30
- Assignees: Mita Industrial Co., Ltd.
- Inventors: Toshinori Nishimura; Yukio Hashimoto
- Web page: https://patentgrep.com/patent/US5710955A

## CPC

- G03G 15/0882: {by a peelable sealing film (resealing used developer units before refilling: G03G15/0894)}
- G03G 15/0849: {Detection or control means for the developer concentration}
- G03G 15/0853: {the concentration being measured by magnetic means}
- G03G 15/0855: {the concentration being measured by optical means}
- G03G 15/0865: {Arrangements for supplying new developer}
- G03G 15/0891: {for conveying or circulating developer, e.g. augers}
- Y10S 222/01: Xerography
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An electrostatic latent image-developing device includes a toner cartridge provided with a container having a toner discharge opening, a toner contained in the container and a sealing tape for sealing the toner discharge opening, and a toner cartridge-holding device having a toner-receiving opening and allowing detachable mounting of the toner cartridge. The toner cartridge holding device has a toner cartridge mount detection switch that is opened and closed by the attachment or detachment of the toner cartridge. The toner cartridge mount detection switch is inserted in an electric circuit that feeds electric power to an electric motor that drives a conveying device for conveying the discharged toner from the cartridge to the developing unit or drives a take-up shaft for taking up the sealing tape.

## Claims

### Claim 1

An electrostatic latent image-developing device comprising:
a toner cartridge equipped with a container having a toner discharge opening, a toner contained in said container, and a sealing tape for sealing said toner discharge opening;
a toner cartridge-holding means having a toner-receiving opening and allowing detachably to mount said toner cartridge; and
a conveying means for conveying the toner discharged from said toner cartridge to a developing unit;
wherein said toner cartridge-holding means is provided with a toner cartridge mount detection switch that is opened and closed by the attachment or detachment of said toner cartridge, and said toner cartridge mount detection switch is inserted in an electric circuit that feeds electric power to an electric motor that drives said conveying means.

### Claim 2

An electrostatic latent image-developing device comprising:
a toner cartridge equipped with a container having a toner discharge opening, a toner contained in said container, a sealing tape for sealing said toner discharge opening, and take-up shaft for taking up said sealing tape; and
a toner cartridge-holding means having a toner-receiving opening and allowing detachably to mount said toner cartridge;
wherein said toner cartridge-holding means is equipped with a toner cartridge mount detection switch that is disposed at a predetermined position that has been set depending upon a region where the device is to be used and is inserted in an electric circuit for feeding electric power to an electric motor that drives said take-up shaft; and
said toner cartridge is equipped with an operation piece that is disposed at a predetermined position that has been set depending upon a region where the device is to be used and closes said toner cartridge mount detection switch in a state where said toner cartridge is mounted on a predetermined mounting position of said toner cartridge-holding means.