You can check the patent inquiry website, such as SooPAT, and I found it. Go to SooPAT's website, click World Patent Inquiry and enter the application number JP 49089675 A.
[JP] - JP5 1024 128A
ApplicationNo.: JP 19740089675 Application Date: 1974-08-05.
Applicant:? Ricoh KK company
Inventor (designer):? Tada Tadashi? Yamada Yukio? OOHORI TAMIO? Abe OONORIHAMAGUCHI IWAO? Misawa Daoxiong