Ping wifi printer from mikrotik router

Hi for all my frineds here..!, it is my first time in this forum so if my question seems silly forgive me..
My problem like that:
I have a RB951UI mikrotik router with default settings connected to dlink router using eth1from mikrotik side, my dlink ip range is 192.168.1.0-254 and my mikrotik range 192.168.88. 0-254 i connect my pc to mikrotik using wifi, and i can ping every single device connected to switch that connected to dlink router like my - (ip phone /pbx, camera) this all devices connected wirely, but i can not ping my printer that connected to dlink using wireless connection, so i can not print anything when i’m connected to mikrotik and i have to switch the connection to dlink router wifi in order to print any file, so what i have to do to solve this problem and thanks in advance.