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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 3958880 B1

PDFFull Text
Date of Patent:
May. 25, 1976

Filed:

Dec. 05, 1973

Copying machine of the diazo type

Applicant:
Inventors:

Takaji Washio, Kashiwara, JA;

Tadanobu Nakajima, Kashiwara, JA;

Hideo Miyoshi, Habikino, JA;

Masahiro Yoshioka, Osaka, JA;

Tatsuo Aizawa, Osaka, JA;

Assignee:

Mita Industrial Company, Ltd., Osaka, JA;

Attorney:

Wenderoth, Lind & Ponack

Primary Examiner:

Fred L Braun

Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355106 ; 219505 ; 354299 ;
Abstract

A copying machine of the diazo type comprises a light exposure zone for exposing to light a diazo type photosensitive sheet superposed with an original, a development zone for developing the light exposed photosensitive sheet and a delivery mechanism for feeding the original and diazo type photosensitive sheet to the light exposure zone and forwarding the light exposed photosensitive sheet to the development zone. The light exposure zone includes a transparent cylinder capable of rotating while having a superposed assembly of the original and photosensitive sheet closely contacting the outer surface thereof and a heat-generating light source mounted in the interior of the transparent cylinder. The transparent cylinder has a fan for feeding cold air into the transparent cylinder from one end thereof and cooling the outer surface of the transparent cylinder substantially uniformly along the entire length thereof and a temperature-detecting mechanism thermoconductively contacting the outer surface of the transparent cylinder to detect the temperature of the outer surface. A temperature-controlling mechanism is provided to control the air feed rate of the fan in response to signals from the temperature detecting mechanism, to control the temperature of the outer surface of the transparent cylinder within a predetermined temperature range.

Find Patent Forward Citations

Washio, Takaji. (1976). Copying machine of the diazo type (U.S. Patent No. 3958880). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3958880

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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