Epson WF-3820 Series User Manual

❏ 256bit: AES256
CA-signed Certicate is expired.
If there is a problem with the expiration date of the
certicate, "e certicate
has expired" is
displayed when connecting to Web
Cong
with SSL/TLS communication (https). If the message
appears before its expiration date, make sure that the printer's date is congured correctly.
The common name of the certicate and the printer do not match.
If the common name of the certicate and the printer do not match, the message "e name of the
security certicate does not match···" is displayed when accessing Web Cong using SSL/TLS
communication (https). is happens because the following IP addresses do not match.
❏ e printer's IP address entered to common name for creating a Self-signed Certicate or CSR
❏ IP address entered to web browser when running Web Cong
For Self-signed Certicate, update the certicate.
For CA-signed
Certicate
, take the
certicate
again for the printer.
The proxy server setting of local address is not set to web browser.
When the printer is set to use a proxy server, congure the web browser not to connect to the local
address via the proxy server.
❏ Windows:
Select Control Panel > Network and Internet > Internet Options > Connections > LAN settings
> Proxy server, and then
congure
not to use the proxy server for LAN (local addresses).
❏ Mac OS:
Select System Preferences > Network > Advanced > Proxies, and then register the local address
for Bypass proxy settings for these Hosts & Domains.
Example:
192.168.1.*: Local address 192.168.1.XXX, subnet mask 255.255.255.0
192.168.*.*: Local address 192.168.XXX.XXX, subnet mask 255.255.0.0
Managing the Printer
Disabling the External Interface
You can disable the interface that is used to connect the device to the printer. Make the restriction settings to
restrict printing and scanning other than via network.
Note:
You can also make the restriction settings on the printer's control panel.
❏ Memory Device : Settings > General Settings > Printer Settings > Memory Device Interface > Memory Device
❏ PC Connection via USB : Settings > General Settings > Printer Settings > PC Connection via USB
1.
Access Web Cong and select the Product Security tab > External Interface.
Administrator Information > Managing the Printer > Disabling the External Interface
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Epson WF-3820 Series Specifications

General

Print Technology	Inkjet
Max Print Resolution	4800 x 2400 dpi
Connectivity	USB, Ethernet, Wi-Fi, Wi-Fi Direct
Paper Capacity	250 sheets
Duplex Printing	Yes
Scanner Type	Flatbed color image scanner
Display	2.7" color touchscreen
Functions	Print, Copy, Scan, Fax
ADF Capacity	35 sheets
Scan Resolution	1200 x 2400 dpi
Fax Speed	33.6 Kbps
Ink Type	DURABrite Ultra pigment ink
Ink Cartridges	4 individual ink cartridges (Black, Cyan, Magenta, Yellow)
Paper Sizes Supported	A4, A6
Mobile Printing	Epson Connect, Apple AirPrint, Mopria
Dimensions (W x D x H)	16.7" x 19.8" x 10.8"