Microfilm projection printer

Claim 2

A microfilm projection printer for reduction printing which includes: a projector having means for storing a first film; means for projecting light through said first film along an optical axis; a first driving means in said projector for moving said first film continuously at a substantially constant predetermined rate uniform throughout the path of movement of said first film, said first driving means including a driving roller immediately adjacent said optical axis and around which said first film travels after said first film's passage across said optical axis and a hold back roller immediately adjacent optical axis and around which said first film travels before said films passage across said optical axis whereby said first film is subjected to a substantially constant tension and moves at a substantially constant speed in its passage across said optical axis; a camera having means for storing a second film; lens means for forming an image of said first film on said second film; a second driving means in said camera for moving said second film continuously at a substantially constant predetermined rate uniform throughout the path of movement of said second film; and motor means including an electric motor connected by a first belt to said first driving means and by a second belt to said second driving means.

Claim 3

A microfilm projection printer for reduction printing which includes: a projector having means for storing a first film; means for projecting light through said first film along an optical axis; a first driving means in said projector for moving said film continuously at a substantially constant predetermined rate uniform throughout the path of movement of said first film; a camera having means for storing a second film; lens means for forming an image of said first film on said second film; a second driving means in said camera for moving said second film continuously at a substantially constant predetermined rate uniform throughout the path of movement of said second film, said second driving means including a driving roller whose axis of rotation is perpendicular to and intersects with said optical axis, said second film passing around said driving roller and being driven thereby and a holdback roller adjacent said driving roller and around which said second film travels prior to its travel across said driving roller whereby the second film is subjected to a substantially constant tension and moves at a substantially constant speed in its passage around said optical axis; and motor means including an electric motor connected by a first belt to said first driving means and by a second belt to said second driving means.

Claim 4

A microfilm projection printer for reduction printing which includes: a projector having means for storing a first film; means for projecting light through said first film along an optical axis; a first driving means in said projector for moving said film continuously at a substantially constant predetermined rate uniform throughout the path of movement of said first film; a camera having means for storing a second film; lens means for forming an image of said first film on said second film; a second driving means in said camera for moving said second film continuously at a substantially constant predetermined rate uniform throughout the path of movement of said second film, said second driving means including a driving roller whose axis of rotation is perpendicular to and intersects with said optical axis, said second film passing around said driving roller and being driven thereby and a holdback roller adjacent said driving roller and around which said second film travels prior to its travel across said driving roller whereby the second film is subjected to a substantially constant tension and moves at a substantially constant speed in its passage around said optical axis; and motor means including an electric motor connected by a first belt to said first driving means and by a second belt to said second driving means.

Claim 5

A microfilm projection printer for reduction printing which includes: a projector having means for storing a first film; means for projecting light through said first film along an optical axis; a first driving means in said projector for moving said film at a substantially constant predetermined rate uniform throughout the path of movement of said first film, said first driving means including a projector driving roller immediately adjacent said optical axis and around which said first film travels after said film's passage across said optical axis, and a projector holdback roller immediately adjacent said optical axis and around which said first film travels before said film's passage across said optical axis whereby said first film is subjected to a substantially constant tension and moves at a substantially constant speed in its passage across said optical axis; a camera having means for storing a second film; lens means for forming an image of said first film on said second film; a second driving means in said camera for moving said second film continuously at a substantially constant predetermined rate uniform throughout the path of movement of said second film, said second driving means including a camera driving roller whose axis of rotation is perpendicular to and intersects with said optical axis, said second film passing around said driving roller and being driven thereby, and a camera holdback roller adjacent said camera driving roller and around which said second film travels prior to its travel around said driving roller whereby said second film is subjected to a substantially constant tension and is moved at a substantially constant speed in its passage across said optical axis; and motor means including an electric motor connected by a first belt to said first driving means and by a second belt to said second driving means.

Claim 6

A microfilm projection printer for reduction printing which includes: a projector having means for storing a first film; means for projecting light through said first film along an optical axis; a first driving means in said projector for moving said film at a substantially constant predetermined rate uniform throughout the path of movement of said first film, said first driving means including a projector driving roller immediately adjacent said optical axis and around which said first film travels after said film's passage across said optical axis, and a projector holdback roller immediately adjacent said optical axis and around which said first film travels before said film's passage across said optical axis whereby said first film is subjected to a substantially constant tension and moves at a substantially constant speed in its passage across said optical axis; a camera having means for storing a second film; lens means for forming an image of said first film on said second film; a second driving means in said camera for moving said second film continuously at a substantially constant predetermined rate uniform throughout the path of movement of said second film, said second driving means including a camera driving roller whose axis of rotation is perpendicular to and intersects with said optical axis, said second film passing around said driving roller and being driven thereby, and a camera holdback roller adjacent said camera driving roller and around which said second film travels prior to its travel around said driving roller whereby said second film is subjected to a substantially constant tension and is moved at a substantially constant speed in its passage across said optical axis; and motor means including an electric motor connected by a first belt to said first driving means and by a second belt to said second driving means.